/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jit_arm64_MacroAssembler_arm64_inl_h
#define jit_arm64_MacroAssembler_arm64_inl_h
#include "jit/arm64/MacroAssembler-arm64.h"
namespace js {
namespace jit {
//{{{ check_macroassembler_style
void MacroAssembler::move64(Register64 src, Register64 dest) {
Mov(ARMRegister(dest.reg, 64), ARMRegister(src.reg, 64));
}
void MacroAssembler::move64(Imm64 imm, Register64 dest) {
Mov(ARMRegister(dest.reg, 64), imm.value);
}
void MacroAssembler::moveFloat16ToGPR(FloatRegister src,
Register dest) {
// Direct "half-precision to 32-bit" move requires (FEAT_FP16), so we
// instead use a "single-precision to 32-bit" move.
Fmov(ARMRegister(dest, 32), ARMFPRegister(src, 32));
// Ensure the hi-word is zeroed.
Uxth(ARMRegister(dest, 32), ARMRegister(dest, 32));
}
void MacroAssembler::moveGPRToFloat16(
Register src, FloatRegister dest) {
// Ensure the hi-word is zeroed.
Uxth(ARMRegister(src, 32), ARMRegister(src, 32));
// Direct "32-bit to half-precision" move requires (FEAT_FP16), so we
// instead use a "32-bit to single-precision" move.
Fmov(ARMFPRegister(dest, 32), ARMRegister(src, 32));
}
void MacroAssembler::moveFloat32ToGPR(FloatRegister src,
Register dest) {
Fmov(ARMRegister(dest, 32), ARMFPRegister(src, 32));
}
void MacroAssembler::moveGPRToFloat32(
Register src, FloatRegister dest) {
Fmov(ARMFPRegister(dest, 32), ARMRegister(src, 32));
}
void MacroAssembler::move8ZeroExtend(
Register src,
Register dest) {
Uxtb(ARMRegister(dest, 32), ARMRegister(src, 32));
}
void MacroAssembler::move8SignExtend(
Register src,
Register dest) {
Sxtb(ARMRegister(dest, 32), ARMRegister(src, 32));
}
void MacroAssembler::move16SignExtend(
Register src,
Register dest) {
Sxth(ARMRegister(dest, 32), ARMRegister(src, 32));
}
void MacroAssembler::moveDoubleToGPR64(FloatRegister src, Register64 dest) {
Fmov(ARMRegister(dest.reg, 64), ARMFPRegister(src, 64));
}
void MacroAssembler::moveGPR64ToDouble(Register64 src, FloatRegister dest) {
Fmov(ARMFPRegister(dest, 64), ARMRegister(src.reg, 64));
}
void MacroAssembler::moveLowDoubleToGPR(FloatRegister src,
Register dest) {
Fmov(ARMRegister(dest, 32), ARMFPRegister(src, 32));
}
void MacroAssembler::move64To32(Register64 src,
Register dest) {
Mov(ARMRegister(dest, 32), ARMRegister(src.reg, 32));
}
void MacroAssembler::move32To64ZeroExtend(
Register src, Register64 dest) {
Uxtw(ARMRegister(dest.reg, 64), ARMRegister(src, 64));
}
void MacroAssembler::move8To64SignExtend(
Register src, Register64 dest) {
Sxtb(ARMRegister(dest.reg, 64), ARMRegister(src, 32));
}
void MacroAssembler::move16To64SignExtend(
Register src, Register64 dest) {
Sxth(ARMRegister(dest.reg, 64), ARMRegister(src, 32));
}
void MacroAssembler::move32To64SignExtend(
Register src, Register64 dest) {
Sxtw(ARMRegister(dest.reg, 64), ARMRegister(src, 32));
}
void MacroAssembler::move8SignExtendToPtr(
Register src,
Register dest) {
Sxtb(ARMRegister(dest, 64), ARMRegister(src, 32));
}
void MacroAssembler::move16SignExtendToPtr(
Register src,
Register dest) {
Sxth(ARMRegister(dest, 64), ARMRegister(src, 32));
}
void MacroAssembler::move32SignExtendToPtr(
Register src,
Register dest) {
Sxtw(ARMRegister(dest, 64), ARMRegister(src, 32));
}
void MacroAssembler::move32ZeroExtendToPtr(
Register src,
Register dest) {
Uxtw(ARMRegister(dest, 64), ARMRegister(src, 64));
}
// ===============================================================
// Load instructions
void MacroAssembler::load32SignExtendToPtr(
const Address& src,
Register dest) {
load32(src, dest);
move32To64SignExtend(dest, Register64(dest));
}
void MacroAssembler::loadAbiReturnAddress(
Register dest) { movePtr(lr, dest); }
// ===============================================================
// Logical instructions
void MacroAssembler::not32(
Register reg) {
Orn(ARMRegister(reg, 32), vixl::wzr, ARMRegister(reg, 32));
}
void MacroAssembler::notPtr(
Register reg) {
Orn(ARMRegister(reg, 64), vixl::xzr, ARMRegister(reg, 64));
}
void MacroAssembler::and32(
Register src,
Register dest) {
And(ARMRegister(dest, 32), ARMRegister(dest, 32),
Operand(ARMRegister(src, 32)));
}
void MacroAssembler::and32(Imm32 imm,
Register dest) {
And(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(imm.value));
}
void MacroAssembler::and32(Imm32 imm,
Register src,
Register dest) {
And(ARMRegister(dest, 32), ARMRegister(src, 32), Operand(imm.value));
}
void MacroAssembler::and32(Imm32 imm,
const Address& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != dest.base);
load32(dest, scratch32.asUnsized());
And(scratch32, scratch32, Operand(imm.value));
store32(scratch32.asUnsized(), dest);
}
void MacroAssembler::and32(
const Address& src,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != src.base);
load32(src, scratch32.asUnsized());
And(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(scratch32));
}
void MacroAssembler::andPtr(
Register src,
Register dest) {
And(ARMRegister(dest, 64), ARMRegister(dest, 64),
Operand(ARMRegister(src, 64)));
}
void MacroAssembler::andPtr(Imm32 imm,
Register dest) {
And(ARMRegister(dest, 64), ARMRegister(dest, 64), Operand(imm.value));
}
void MacroAssembler::and64(Imm64 imm, Register64 dest) {
And(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), Operand(imm.value));
}
void MacroAssembler::and64(Register64 src, Register64 dest) {
And(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64),
ARMRegister(src.reg, 64));
}
void MacroAssembler::or64(Imm64 imm, Register64 dest) {
Orr(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), Operand(imm.value));
}
void MacroAssembler::or32(Imm32 imm,
Register dest) {
Orr(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(imm.value));
}
void MacroAssembler::or32(
Register src,
Register dest) {
Orr(ARMRegister(dest, 32), ARMRegister(dest, 32),
Operand(ARMRegister(src, 32)));
}
void MacroAssembler::or32(Imm32 imm,
const Address& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != dest.base);
load32(dest, scratch32.asUnsized());
Orr(scratch32, scratch32, Operand(imm.value));
store32(scratch32.asUnsized(), dest);
}
void MacroAssembler::orPtr(
Register src,
Register dest) {
Orr(ARMRegister(dest, 64), ARMRegister(dest, 64),
Operand(ARMRegister(src, 64)));
}
void MacroAssembler::orPtr(Imm32 imm,
Register dest) {
Orr(ARMRegister(dest, 64), ARMRegister(dest, 64), Operand(imm.value));
}
void MacroAssembler::or64(Register64 src, Register64 dest) {
orPtr(src.reg, dest.reg);
}
void MacroAssembler::xor64(Register64 src, Register64 dest) {
xorPtr(src.reg, dest.reg);
}
void MacroAssembler::xor32(
Register src,
Register dest) {
Eor(ARMRegister(dest, 32), ARMRegister(dest, 32),
Operand(ARMRegister(src, 32)));
}
void MacroAssembler::xor32(Imm32 imm,
Register dest) {
Eor(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(imm.value));
}
void MacroAssembler::xor32(Imm32 imm,
const Address& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != dest.base);
load32(dest, scratch32.asUnsized());
Eor(scratch32, scratch32, Operand(imm.value));
store32(scratch32.asUnsized(), dest);
}
void MacroAssembler::xor32(
const Address& src,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != src.base);
load32(src, scratch32.asUnsized());
Eor(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(scratch32));
}
void MacroAssembler::xorPtr(
Register src,
Register dest) {
Eor(ARMRegister(dest, 64), ARMRegister(dest, 64),
Operand(ARMRegister(src, 64)));
}
void MacroAssembler::xorPtr(Imm32 imm,
Register dest) {
Eor(ARMRegister(dest, 64), ARMRegister(dest, 64), Operand(imm.value));
}
void MacroAssembler::xor64(Imm64 imm, Register64 dest) {
Eor(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), Operand(imm.value));
}
// ===============================================================
// Swap instructions
void MacroAssembler::byteSwap16SignExtend(
Register reg) {
rev16(ARMRegister(reg, 32), ARMRegister(reg, 32));
sxth(ARMRegister(reg, 32), ARMRegister(reg, 32));
}
void MacroAssembler::byteSwap16ZeroExtend(
Register reg) {
rev16(ARMRegister(reg, 32), ARMRegister(reg, 32));
uxth(ARMRegister(reg, 32), ARMRegister(reg, 32));
}
void MacroAssembler::byteSwap32(
Register reg) {
rev(ARMRegister(reg, 32), ARMRegister(reg, 32));
}
void MacroAssembler::byteSwap64(Register64 reg) {
rev(ARMRegister(reg.reg, 64), ARMRegister(reg.reg, 64));
}
// ===============================================================
// Arithmetic functions
void MacroAssembler::add32(
Register src,
Register dest) {
Add(ARMRegister(dest, 32), ARMRegister(dest, 32),
Operand(ARMRegister(src, 32)));
}
void MacroAssembler::add32(Imm32 imm,
Register dest) {
Add(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(imm.value));
}
void MacroAssembler::add32(Imm32 imm,
Register src,
Register dest) {
Add(ARMRegister(dest, 32), ARMRegister(src, 32), Operand(imm.value));
}
void MacroAssembler::add32(Imm32 imm,
const Address& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != dest.base);
Ldr(scratch32, toMemOperand(dest));
Add(scratch32, scratch32, Operand(imm.value));
Str(scratch32, toMemOperand(dest));
}
void MacroAssembler::addPtr(
Register src,
Register dest) {
addPtr(src, dest, dest);
}
void MacroAssembler::addPtr(
Register src1,
Register src2,
Register dest) {
Add(ARMRegister(dest, 64), ARMRegister(src1, 64),
Operand(ARMRegister(src2, 64)));
}
void MacroAssembler::addPtr(Imm32 imm,
Register dest) {
addPtr(imm, dest, dest);
}
void MacroAssembler::addPtr(Imm32 imm,
Register src,
Register dest) {
Add(ARMRegister(dest, 64), ARMRegister(src, 64), Operand(imm.value));
}
void MacroAssembler::addPtr(ImmWord imm,
Register dest) {
Add(ARMRegister(dest, 64), ARMRegister(dest, 64), Operand(imm.value));
}
void MacroAssembler::addPtr(Imm32 imm,
const Address& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
MOZ_ASSERT(scratch64.asUnsized() != dest.base);
Ldr(scratch64, toMemOperand(dest));
Add(scratch64, scratch64, Operand(imm.value));
Str(scratch64, toMemOperand(dest));
}
void MacroAssembler::addPtr(
const Address& src,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
MOZ_ASSERT(scratch64.asUnsized() != src.base);
Ldr(scratch64, toMemOperand(src));
Add(ARMRegister(dest, 64), ARMRegister(dest, 64), Operand(scratch64));
}
void MacroAssembler::add64(Register64 src, Register64 dest) {
addPtr(src.reg, dest.reg);
}
void MacroAssembler::add64(Imm32 imm, Register64 dest) {
Add(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), Operand(imm.value));
}
void MacroAssembler::add64(Imm64 imm, Register64 dest) {
Add(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), Operand(imm.value));
}
CodeOffset MacroAssembler::sub32FromStackPtrWithPatch(
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
AutoForbidPoolsAndNops afp(
this,
/* max number of instructions in scope = */ 3);
CodeOffset offs = CodeOffset(currentOffset());
movz(scratch, 0, 0);
movk(scratch, 0, 16);
Sub(ARMRegister(dest, 64), sp, scratch);
return offs;
}
void MacroAssembler::patchSub32FromStackPtr(CodeOffset offset, Imm32 imm) {
Instruction* i1 = getInstructionAt(BufferOffset(offset.offset()));
MOZ_ASSERT(i1->IsMovz());
i1->SetInstructionBits(i1->InstructionBits() |
ImmMoveWide(uint16_t(imm.value)));
Instruction* i2 = getInstructionAt(BufferOffset(offset.offset() + 4));
MOZ_ASSERT(i2->IsMovk());
i2->SetInstructionBits(i2->InstructionBits() |
ImmMoveWide(uint16_t(imm.value >> 16)));
}
void MacroAssembler::addDouble(FloatRegister src, FloatRegister dest) {
fadd(ARMFPRegister(dest, 64), ARMFPRegister(dest, 64),
ARMFPRegister(src, 64));
}
void MacroAssembler::addFloat32(FloatRegister src, FloatRegister dest) {
fadd(ARMFPRegister(dest, 32), ARMFPRegister(dest, 32),
ARMFPRegister(src, 32));
}
void MacroAssembler::sub32(Imm32 imm,
Register dest) {
Sub(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(imm.value));
}
void MacroAssembler::sub32(
Register src,
Register dest) {
Sub(ARMRegister(dest, 32), ARMRegister(dest, 32),
Operand(ARMRegister(src, 32)));
}
void MacroAssembler::sub32(
const Address& src,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != src.base);
load32(src, scratch32.asUnsized());
Sub(ARMRegister(dest, 32), ARMRegister(dest, 32), Operand(scratch32));
}
void MacroAssembler::subPtr(
Register src,
Register dest) {
Sub(ARMRegister(dest, 64), ARMRegister(dest, 64),
Operand(ARMRegister(src, 64)));
}
void MacroAssembler::subPtr(
Register src,
const Address& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
MOZ_ASSERT(scratch64.asUnsized() != dest.base);
Ldr(scratch64, toMemOperand(dest));
Sub(scratch64, scratch64, Operand(ARMRegister(src, 64)));
Str(scratch64, toMemOperand(dest));
}
void MacroAssembler::subPtr(Imm32 imm,
Register dest) {
Sub(ARMRegister(dest, 64), ARMRegister(dest, 64), Operand(imm.value));
}
void MacroAssembler::subPtr(
const Address& addr,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
MOZ_ASSERT(scratch64.asUnsized() != addr.base);
Ldr(scratch64, toMemOperand(addr));
Sub(ARMRegister(dest, 64), ARMRegister(dest, 64), Operand(scratch64));
}
void MacroAssembler::sub64(Register64 src, Register64 dest) {
Sub(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64),
ARMRegister(src.reg, 64));
}
void MacroAssembler::sub64(Imm64 imm, Register64 dest) {
Sub(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), Operand(imm.value));
}
void MacroAssembler::subDouble(FloatRegister src, FloatRegister dest) {
fsub(ARMFPRegister(dest, 64), ARMFPRegister(dest, 64),
ARMFPRegister(src, 64));
}
void MacroAssembler::subFloat32(FloatRegister src, FloatRegister dest) {
fsub(ARMFPRegister(dest, 32), ARMFPRegister(dest, 32),
ARMFPRegister(src, 32));
}
void MacroAssembler::mul32(
Register rhs,
Register srcDest) {
mul32(srcDest, rhs, srcDest, nullptr);
}
void MacroAssembler::mul32(Imm32 imm,
Register srcDest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
move32(imm, scratch32.asUnsized());
mul32(scratch32.asUnsized(), srcDest);
}
void MacroAssembler::mul32(
Register src1,
Register src2,
Register dest,
Label* onOver) {
if (onOver) {
Smull(ARMRegister(dest, 64), ARMRegister(src1, 32), ARMRegister(src2, 32));
Cmp(ARMRegister(dest, 64), Operand(ARMRegister(dest, 32), vixl::SXTW));
B(onOver, NotEqual);
// Clear upper 32 bits.
Uxtw(ARMRegister(dest, 64), ARMRegister(dest, 64));
}
else {
Mul(ARMRegister(dest, 32), ARMRegister(src1, 32), ARMRegister(src2, 32));
}
}
void MacroAssembler::mulHighUnsigned32(Imm32 imm,
Register src,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
Mov(scratch32, int32_t(imm.value));
Umull(ARMRegister(dest, 64), scratch32, ARMRegister(src, 32));
Lsr(ARMRegister(dest, 64), ARMRegister(dest, 64), 32);
}
void MacroAssembler::mulPtr(
Register rhs,
Register srcDest) {
Mul(ARMRegister(srcDest, 64), ARMRegister(srcDest, 64), ARMRegister(rhs, 64));
}
void MacroAssembler::mul64(Imm64 imm,
const Register64& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
MOZ_ASSERT(dest.reg != scratch64.asUnsized());
mov(ImmWord(imm.value), scratch64.asUnsized());
Mul(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), scratch64);
}
void MacroAssembler::mul64(
const Register64& src,
const Register64& dest,
const Register temp) {
MOZ_ASSERT(temp ==
Register::Invalid());
Mul(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64),
ARMRegister(src.reg, 64));
}
void MacroAssembler::mul64(
const Register64& src1,
const Register64& src2,
const Register64& dest) {
Mul(ARMRegister(dest.reg, 64), ARMRegister(src1.reg, 64),
ARMRegister(src2.reg, 64));
}
void MacroAssembler::mul64(Imm64 src1,
const Register64& src2,
const Register64& dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
MOZ_ASSERT(dest.reg != scratch64.asUnsized());
mov(ImmWord(src1.value), scratch64.asUnsized());
Mul(ARMRegister(dest.reg, 64), ARMRegister(src2.reg, 64), scratch64);
}
void MacroAssembler::mulBy3(
Register src,
Register dest) {
ARMRegister xdest(dest, 64);
ARMRegister xsrc(src, 64);
Add(xdest, xsrc, Operand(xsrc, vixl::LSL, 1));
}
void MacroAssembler::mulFloat32(FloatRegister src, FloatRegister dest) {
fmul(ARMFPRegister(dest, 32), ARMFPRegister(dest, 32),
ARMFPRegister(src, 32));
}
void MacroAssembler::mulDouble(FloatRegister src, FloatRegister dest) {
fmul(ARMFPRegister(dest, 64), ARMFPRegister(dest, 64),
ARMFPRegister(src, 64));
}
void MacroAssembler::mulDoublePtr(ImmPtr imm,
Register temp,
FloatRegister dest) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(temp != scratch);
movePtr(imm, scratch);
const ARMFPRegister scratchDouble = temps.AcquireD();
Ldr(scratchDouble, MemOperand(Address(scratch, 0)));
fmul(ARMFPRegister(dest, 64), ARMFPRegister(dest, 64), scratchDouble);
}
void MacroAssembler::quotient32(
Register rhs,
Register srcDest,
bool isUnsigned) {
if (isUnsigned) {
Udiv(ARMRegister(srcDest, 32), ARMRegister(srcDest, 32),
ARMRegister(rhs, 32));
}
else {
Sdiv(ARMRegister(srcDest, 32), ARMRegister(srcDest, 32),
ARMRegister(rhs, 32));
}
}
void MacroAssembler::quotient64(
Register rhs,
Register srcDest,
bool isUnsigned) {
if (isUnsigned) {
Udiv(ARMRegister(srcDest, 64), ARMRegister(srcDest, 64),
ARMRegister(rhs, 64));
}
else {
Sdiv(ARMRegister(srcDest, 64), ARMRegister(srcDest, 64),
ARMRegister(rhs, 64));
}
}
// This does not deal with x % 0 or INT_MIN % -1, the caller needs to filter
// those cases when they may occur.
void MacroAssembler::remainder32(
Register rhs,
Register srcDest,
bool isUnsigned) {
vixl::UseScratchRegisterScope temps(
this);
ARMRegister scratch = temps.AcquireW();
if (isUnsigned) {
Udiv(scratch, ARMRegister(srcDest, 32), ARMRegister(rhs, 32));
}
else {
Sdiv(scratch, ARMRegister(srcDest, 32), ARMRegister(rhs, 32));
}
// Compute the remainder: srcDest = srcDest - (scratch * rhs).
Msub(
/* result= */ ARMRegister(srcDest, 32), scratch, ARMRegister(rhs, 32),
ARMRegister(srcDest, 32));
}
void MacroAssembler::remainder64(
Register rhs,
Register srcDest,
bool isUnsigned) {
const ARMRegister dividend64(srcDest, 64);
const ARMRegister divisor64(rhs, 64);
vixl::UseScratchRegisterScope temps(
this);
ARMRegister scratch64 = temps.AcquireX();
if (isUnsigned) {
Udiv(scratch64, ARMRegister(srcDest, 64), ARMRegister(rhs, 64));
}
else {
Sdiv(scratch64, ARMRegister(srcDest, 64), ARMRegister(rhs, 64));
}
// Compute the remainder: srcDest = srcDest - (scratch * rhs).
Msub(
/* result= */ ARMRegister(srcDest, 64), scratch64, ARMRegister(rhs, 64),
ARMRegister(srcDest, 64));
}
void MacroAssembler::divFloat32(FloatRegister src, FloatRegister dest) {
fdiv(ARMFPRegister(dest, 32), ARMFPRegister(dest, 32),
ARMFPRegister(src, 32));
}
void MacroAssembler::divDouble(FloatRegister src, FloatRegister dest) {
fdiv(ARMFPRegister(dest, 64), ARMFPRegister(dest, 64),
ARMFPRegister(src, 64));
}
void MacroAssembler::inc64(AbsoluteAddress dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratchAddr64 = temps.AcquireX();
const ARMRegister scratch64 = temps.AcquireX();
Mov(scratchAddr64, uint64_t(dest.addr));
Ldr(scratch64, MemOperand(scratchAddr64, 0));
Add(scratch64, scratch64, Operand(1));
Str(scratch64, MemOperand(scratchAddr64, 0));
}
void MacroAssembler::neg32(
Register reg) {
Neg(ARMRegister(reg, 32), Operand(ARMRegister(reg, 32)));
}
void MacroAssembler::neg64(Register64 reg) { negPtr(reg.reg); }
void MacroAssembler::negPtr(
Register reg) {
Neg(ARMRegister(reg, 64), Operand(ARMRegister(reg, 64)));
}
void MacroAssembler::negateFloat(FloatRegister reg) {
fneg(ARMFPRegister(reg, 32), ARMFPRegister(reg, 32));
}
void MacroAssembler::negateDouble(FloatRegister reg) {
fneg(ARMFPRegister(reg, 64), ARMFPRegister(reg, 64));
}
void MacroAssembler::abs32(
Register src,
Register dest) {
Cmp(ARMRegister(src, 32), wzr);
Cneg(ARMRegister(dest, 32), ARMRegister(src, 32), Assembler::LessThan);
}
void MacroAssembler::absFloat32(FloatRegister src, FloatRegister dest) {
fabs(ARMFPRegister(dest, 32), ARMFPRegister(src, 32));
}
void MacroAssembler::absDouble(FloatRegister src, FloatRegister dest) {
fabs(ARMFPRegister(dest, 64), ARMFPRegister(src, 64));
}
void MacroAssembler::sqrtFloat32(FloatRegister src, FloatRegister dest) {
fsqrt(ARMFPRegister(dest, 32), ARMFPRegister(src, 32));
}
void MacroAssembler::sqrtDouble(FloatRegister src, FloatRegister dest) {
fsqrt(ARMFPRegister(dest, 64), ARMFPRegister(src, 64));
}
void MacroAssembler::minFloat32(FloatRegister other, FloatRegister srcDest,
bool handleNaN) {
MOZ_ASSERT(handleNaN);
// Always true for wasm
fmin(ARMFPRegister(srcDest, 32), ARMFPRegister(srcDest, 32),
ARMFPRegister(other, 32));
}
void MacroAssembler::minDouble(FloatRegister other, FloatRegister srcDest,
bool handleNaN) {
MOZ_ASSERT(handleNaN);
// Always true for wasm
fmin(ARMFPRegister(srcDest, 64), ARMFPRegister(srcDest, 64),
ARMFPRegister(other, 64));
}
void MacroAssembler::maxFloat32(FloatRegister other, FloatRegister srcDest,
bool handleNaN) {
MOZ_ASSERT(handleNaN);
// Always true for wasm
fmax(ARMFPRegister(srcDest, 32), ARMFPRegister(srcDest, 32),
ARMFPRegister(other, 32));
}
void MacroAssembler::maxDouble(FloatRegister other, FloatRegister srcDest,
bool handleNaN) {
MOZ_ASSERT(handleNaN);
// Always true for wasm
fmax(ARMFPRegister(srcDest, 64), ARMFPRegister(srcDest, 64),
ARMFPRegister(other, 64));
}
// ===============================================================
// Shift functions
void MacroAssembler::lshiftPtr(Imm32 imm,
Register dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 64);
Lsl(ARMRegister(dest, 64), ARMRegister(dest, 64), imm.value);
}
void MacroAssembler::lshiftPtr(
Register shift,
Register dest) {
Lsl(ARMRegister(dest, 64), ARMRegister(dest, 64), ARMRegister(shift, 64));
}
void MacroAssembler::flexibleLshiftPtr(
Register shift,
Register srcDest) {
lshiftPtr(shift, srcDest);
}
void MacroAssembler::lshift64(Imm32 imm, Register64 dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 64);
lshiftPtr(imm, dest.reg);
}
void MacroAssembler::lshift64(
Register shift, Register64 srcDest) {
Lsl(ARMRegister(srcDest.reg, 64), ARMRegister(srcDest.reg, 64),
ARMRegister(shift, 64));
}
void MacroAssembler::lshift32(
Register shift,
Register dest) {
Lsl(ARMRegister(dest, 32), ARMRegister(dest, 32), ARMRegister(shift, 32));
}
void MacroAssembler::flexibleLshift32(
Register src,
Register dest) {
lshift32(src, dest);
}
void MacroAssembler::lshift32(Imm32 imm,
Register dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 32);
Lsl(ARMRegister(dest, 32), ARMRegister(dest, 32), imm.value);
}
void MacroAssembler::rshiftPtr(Imm32 imm,
Register dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 64);
Lsr(ARMRegister(dest, 64), ARMRegister(dest, 64), imm.value);
}
void MacroAssembler::rshiftPtr(Imm32 imm,
Register src,
Register dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 64);
Lsr(ARMRegister(dest, 64), ARMRegister(src, 64), imm.value);
}
void MacroAssembler::rshiftPtr(
Register shift,
Register dest) {
Lsr(ARMRegister(dest, 64), ARMRegister(dest, 64), ARMRegister(shift, 64));
}
void MacroAssembler::flexibleRshiftPtr(
Register shift,
Register srcDest) {
rshiftPtr(shift, srcDest);
}
void MacroAssembler::rshift32(
Register shift,
Register dest) {
Lsr(ARMRegister(dest, 32), ARMRegister(dest, 32), ARMRegister(shift, 32));
}
void MacroAssembler::flexibleRshift32(
Register src,
Register dest) {
rshift32(src, dest);
}
void MacroAssembler::rshift32(Imm32 imm,
Register dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 32);
Lsr(ARMRegister(dest, 32), ARMRegister(dest, 32), imm.value);
}
void MacroAssembler::rshiftPtrArithmetic(Imm32 imm,
Register dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 64);
Asr(ARMRegister(dest, 64), ARMRegister(dest, 64), imm.value);
}
void MacroAssembler::rshiftPtrArithmetic(
Register shift,
Register dest) {
Asr(ARMRegister(dest, 64), ARMRegister(dest, 64), ARMRegister(shift, 64));
}
void MacroAssembler::flexibleRshiftPtrArithmetic(
Register shift,
Register srcDest) {
rshiftPtrArithmetic(shift, srcDest);
}
void MacroAssembler::rshift32Arithmetic(
Register shift,
Register dest) {
Asr(ARMRegister(dest, 32), ARMRegister(dest, 32), ARMRegister(shift, 32));
}
void MacroAssembler::rshift32Arithmetic(Imm32 imm,
Register dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 32);
Asr(ARMRegister(dest, 32), ARMRegister(dest, 32), imm.value);
}
void MacroAssembler::flexibleRshift32Arithmetic(
Register src,
Register dest) {
rshift32Arithmetic(src, dest);
}
void MacroAssembler::rshift64(Imm32 imm, Register64 dest) {
MOZ_ASSERT(0 <= imm.value && imm.value < 64);
rshiftPtr(imm, dest.reg);
}
void MacroAssembler::rshift64(
Register shift, Register64 srcDest) {
Lsr(ARMRegister(srcDest.reg, 64), ARMRegister(srcDest.reg, 64),
ARMRegister(shift, 64));
}
void MacroAssembler::rshift64Arithmetic(Imm32 imm, Register64 dest) {
Asr(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64), imm.value);
}
void MacroAssembler::rshift64Arithmetic(
Register shift, Register64 srcDest) {
Asr(ARMRegister(srcDest.reg, 64), ARMRegister(srcDest.reg, 64),
ARMRegister(shift, 64));
}
// ===============================================================
// Condition functions
void MacroAssembler::cmp8Set(Condition cond, Address lhs, Imm32 rhs,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
switch (cond) {
case Assembler::Equal:
case Assembler::NotEqual:
case Assembler::Above:
case Assembler::AboveOrEqual:
case Assembler::Below:
case Assembler::BelowOrEqual:
load8ZeroExtend(lhs, scratch);
cmp32Set(cond, scratch, Imm32(uint8_t(rhs.value)), dest);
break;
case Assembler::GreaterThan:
case Assembler::GreaterThanOrEqual:
case Assembler::LessThan:
case Assembler::LessThanOrEqual:
load8SignExtend(lhs, scratch);
cmp32Set(cond, scratch, Imm32(int8_t(rhs.value)), dest);
break;
default:
MOZ_CRASH(
"unexpected condition");
}
}
void MacroAssembler::cmp16Set(Condition cond, Address lhs, Imm32 rhs,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
switch (cond) {
case Assembler::Equal:
case Assembler::NotEqual:
case Assembler::Above:
case Assembler::AboveOrEqual:
case Assembler::Below:
case Assembler::BelowOrEqual:
load16ZeroExtend(lhs, scratch);
cmp32Set(cond, scratch, Imm32(uint16_t(rhs.value)), dest);
break;
case Assembler::GreaterThan:
case Assembler::GreaterThanOrEqual:
case Assembler::LessThan:
case Assembler::LessThanOrEqual:
load16SignExtend(lhs, scratch);
cmp32Set(cond, scratch, Imm32(int16_t(rhs.value)), dest);
break;
default:
MOZ_CRASH(
"unexpected condition");
}
}
template <
typename T1,
typename T2>
void MacroAssembler::cmp32Set(Condition cond, T1 lhs, T2 rhs,
Register dest) {
cmp32(lhs, rhs);
emitSet(cond, dest);
}
void MacroAssembler::cmp64Set(Condition cond, Register64 lhs, Register64 rhs,
Register dest) {
cmpPtrSet(cond, lhs.reg, rhs.reg, dest);
}
void MacroAssembler::cmp64Set(Condition cond, Register64 lhs, Imm64 rhs,
Register dest) {
cmpPtrSet(cond, lhs.reg, ImmWord(
static_cast<uintptr_t>(rhs.value)), dest);
}
void MacroAssembler::cmp64Set(Condition cond, Address lhs, Register64 rhs,
Register dest) {
cmpPtrSet(cond, lhs, rhs.reg, dest);
}
void MacroAssembler::cmp64Set(Condition cond, Address lhs, Imm64 rhs,
Register dest) {
cmpPtrSet(cond, lhs, ImmWord(
static_cast<uintptr_t>(rhs.value)), dest);
}
template <
typename T1,
typename T2>
void MacroAssembler::cmpPtrSet(Condition cond, T1 lhs, T2 rhs,
Register dest) {
cmpPtr(lhs, rhs);
emitSet(cond, dest);
}
// ===============================================================
// Rotation functions
void MacroAssembler::rotateLeft(Imm32 count,
Register input,
Register dest) {
Ror(ARMRegister(dest, 32), ARMRegister(input, 32), (32 - count.value) & 31);
}
void MacroAssembler::rotateLeft(
Register count,
Register input,
Register dest) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireW();
// Really 32 - count, but the upper bits of the result are ignored.
Neg(scratch, ARMRegister(count, 32));
Ror(ARMRegister(dest, 32), ARMRegister(input, 32), scratch);
}
void MacroAssembler::rotateRight(Imm32 count,
Register input,
Register dest) {
Ror(ARMRegister(dest, 32), ARMRegister(input, 32), count.value & 31);
}
void MacroAssembler::rotateRight(
Register count,
Register input,
Register dest) {
Ror(ARMRegister(dest, 32), ARMRegister(input, 32), ARMRegister(count, 32));
}
void MacroAssembler::rotateLeft64(
Register count, Register64 input,
Register64 dest,
Register temp) {
MOZ_ASSERT(temp ==
Register::Invalid());
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
// Really 64 - count, but the upper bits of the result are ignored.
Neg(scratch, ARMRegister(count, 64));
Ror(ARMRegister(dest.reg, 64), ARMRegister(input.reg, 64), scratch);
}
void MacroAssembler::rotateLeft64(Imm32 count, Register64 input,
Register64 dest,
Register temp) {
MOZ_ASSERT(temp ==
Register::Invalid());
Ror(ARMRegister(dest.reg, 64), ARMRegister(input.reg, 64),
(64 - count.value) & 63);
}
void MacroAssembler::rotateRight64(
Register count, Register64 input,
Register64 dest,
Register temp) {
MOZ_ASSERT(temp ==
Register::Invalid());
Ror(ARMRegister(dest.reg, 64), ARMRegister(input.reg, 64),
ARMRegister(count, 64));
}
void MacroAssembler::rotateRight64(Imm32 count, Register64 input,
Register64 dest,
Register temp) {
MOZ_ASSERT(temp ==
Register::Invalid());
Ror(ARMRegister(dest.reg, 64), ARMRegister(input.reg, 64), count.value & 63);
}
// ===============================================================
// Bit counting functions
void MacroAssembler::clz32(
Register src,
Register dest,
bool knownNotZero) {
Clz(ARMRegister(dest, 32), ARMRegister(src, 32));
}
void MacroAssembler::ctz32(
Register src,
Register dest,
bool knownNotZero) {
Rbit(ARMRegister(dest, 32), ARMRegister(src, 32));
Clz(ARMRegister(dest, 32), ARMRegister(dest, 32));
}
void MacroAssembler::clz64(Register64 src, Register64 dest) {
Clz(ARMRegister(dest.reg, 64), ARMRegister(src.reg, 64));
}
void MacroAssembler::ctz64(Register64 src, Register64 dest) {
Rbit(ARMRegister(dest.reg, 64), ARMRegister(src.reg, 64));
Clz(ARMRegister(dest.reg, 64), ARMRegister(dest.reg, 64));
}
void MacroAssembler::popcnt32(
Register src_,
Register dest_,
Register tmp_) {
MOZ_ASSERT(tmp_ !=
Register::Invalid());
// Equivalent to mozilla::CountPopulation32().
ARMRegister src(src_, 32);
ARMRegister dest(dest_, 32);
ARMRegister tmp(tmp_, 32);
Mov(tmp, src);
if (src_ != dest_) {
Mov(dest, src);
}
Lsr(dest, dest, 1);
And(dest, dest, 0x55555555);
Sub(dest, tmp, dest);
Lsr(tmp, dest, 2);
And(tmp, tmp, 0x33333333);
And(dest, dest, 0x33333333);
Add(dest, tmp, dest);
Add(dest, dest, Operand(dest, vixl::LSR, 4));
And(dest, dest, 0x0F0F0F0F);
Add(dest, dest, Operand(dest, vixl::LSL, 8));
Add(dest, dest, Operand(dest, vixl::LSL, 16));
Lsr(dest, dest, 24);
}
void MacroAssembler::popcnt64(Register64 src_, Register64 dest_,
Register tmp_) {
MOZ_ASSERT(tmp_ !=
Register::Invalid());
// Equivalent to mozilla::CountPopulation64(), though likely more efficient.
ARMRegister src(src_.reg, 64);
ARMRegister dest(dest_.reg, 64);
ARMRegister tmp(tmp_, 64);
Mov(tmp, src);
if (src_ != dest_) {
Mov(dest, src);
}
Lsr(dest, dest, 1);
And(dest, dest, 0x5555555555555555);
Sub(dest, tmp, dest);
Lsr(tmp, dest, 2);
And(tmp, tmp, 0x3333333333333333);
And(dest, dest, 0x3333333333333333);
Add(dest, tmp, dest);
Add(dest, dest, Operand(dest, vixl::LSR, 4));
And(dest, dest, 0x0F0F0F0F0F0F0F0F);
Add(dest, dest, Operand(dest, vixl::LSL, 8));
Add(dest, dest, Operand(dest, vixl::LSL, 16));
Add(dest, dest, Operand(dest, vixl::LSL, 32));
Lsr(dest, dest, 56);
}
// ===============================================================
// Branch functions
void MacroAssembler::branch8(Condition cond,
const Address& lhs, Imm32 rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
switch (cond) {
case Assembler::Equal:
case Assembler::NotEqual:
case Assembler::Above:
case Assembler::AboveOrEqual:
case Assembler::Below:
case Assembler::BelowOrEqual:
load8ZeroExtend(lhs, scratch);
branch32(cond, scratch, Imm32(uint8_t(rhs.value)), label);
break;
case Assembler::GreaterThan:
case Assembler::GreaterThanOrEqual:
case Assembler::LessThan:
case Assembler::LessThanOrEqual:
load8SignExtend(lhs, scratch);
branch32(cond, scratch, Imm32(int8_t(rhs.value)), label);
break;
default:
MOZ_CRASH(
"unexpected condition");
}
}
void MacroAssembler::branch8(Condition cond,
const BaseIndex& lhs,
Register rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
switch (cond) {
case Assembler::Equal:
case Assembler::NotEqual:
case Assembler::Above:
case Assembler::AboveOrEqual:
case Assembler::Below:
case Assembler::BelowOrEqual:
load8ZeroExtend(lhs, scratch);
branch32(cond, scratch, rhs, label);
break;
case Assembler::GreaterThan:
case Assembler::GreaterThanOrEqual:
case Assembler::LessThan:
case Assembler::LessThanOrEqual:
load8SignExtend(lhs, scratch);
branch32(cond, scratch, rhs, label);
break;
default:
MOZ_CRASH(
"unexpected condition");
}
}
void MacroAssembler::branch16(Condition cond,
const Address& lhs, Imm32 rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
switch (cond) {
case Assembler::Equal:
case Assembler::NotEqual:
case Assembler::Above:
case Assembler::AboveOrEqual:
case Assembler::Below:
case Assembler::BelowOrEqual:
load16ZeroExtend(lhs, scratch);
branch32(cond, scratch, Imm32(uint16_t(rhs.value)), label);
break;
case Assembler::GreaterThan:
case Assembler::GreaterThanOrEqual:
case Assembler::LessThan:
case Assembler::LessThanOrEqual:
load16SignExtend(lhs, scratch);
branch32(cond, scratch, Imm32(int16_t(rhs.value)), label);
break;
default:
MOZ_CRASH(
"unexpected condition");
}
}
void MacroAssembler::branch32(Condition cond,
Register lhs,
Register rhs,
Label* label) {
cmp32(lhs, rhs);
B(label, cond);
}
void MacroAssembler::branch32(Condition cond,
Register lhs, Imm32 imm,
Label* label) {
if (imm.value == 0 && cond == Assembler::Equal) {
Cbz(ARMRegister(lhs, 32), label);
}
else if (imm.value == 0 && cond == Assembler::NotEqual) {
Cbnz(ARMRegister(lhs, 32), label);
}
else {
cmp32(lhs, imm);
B(label, cond);
}
}
void MacroAssembler::branch32(Condition cond,
Register lhs,
const Address& rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs);
MOZ_ASSERT(scratch != rhs.base);
load32(rhs, scratch);
branch32(cond, lhs, scratch, label);
}
void MacroAssembler::branch32(Condition cond,
const Address& lhs,
Register rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
MOZ_ASSERT(scratch != rhs);
load32(lhs, scratch);
branch32(cond, scratch, rhs, label);
}
void MacroAssembler::branch32(Condition cond,
const Address& lhs, Imm32 imm,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
load32(lhs, scratch);
branch32(cond, scratch, imm, label);
}
void MacroAssembler::branch32(Condition cond,
const AbsoluteAddress& lhs,
Register rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
movePtr(ImmPtr(lhs.addr), scratch);
branch32(cond, Address(scratch, 0), rhs, label);
}
void MacroAssembler::branch32(Condition cond,
const AbsoluteAddress& lhs,
Imm32 rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
load32(lhs, scratch);
branch32(cond, scratch, rhs, label);
}
void MacroAssembler::branch32(Condition cond,
const BaseIndex& lhs, Imm32 rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
MOZ_ASSERT(scratch32.asUnsized() != lhs.base);
MOZ_ASSERT(scratch32.asUnsized() != lhs.index);
doBaseIndex(scratch32, lhs, vixl::LDR_w);
branch32(cond, scratch32.asUnsized(), rhs, label);
}
void MacroAssembler::branch32(Condition cond, wasm::SymbolicAddress lhs,
Imm32 rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
movePtr(lhs, scratch);
branch32(cond, Address(scratch, 0), rhs, label);
}
void MacroAssembler::branch64(Condition cond, Register64 lhs, Imm64 val,
Label* success, Label* fail) {
branchPtr(cond, lhs.reg, ImmWord(val.value), success);
if (fail) {
B(fail);
}
}
void MacroAssembler::branch64(Condition cond, Register64 lhs, Register64 rhs,
Label* success, Label* fail) {
branchPtr(cond, lhs.reg, rhs.reg, success);
if (fail) {
B(fail);
}
}
void MacroAssembler::branch64(Condition cond,
const Address& lhs, Imm64 val,
Label* success, Label* fail) {
branchPtr(cond, lhs, ImmWord(val.value), success);
if (fail) {
B(fail);
}
}
void MacroAssembler::branch64(Condition cond,
const Address& lhs,
Register64 rhs, Label* success, Label* fail) {
branchPtr(cond, lhs, rhs.reg, success);
if (fail) {
B(fail);
}
}
void MacroAssembler::branch64(Condition cond,
const Address& lhs,
const Address& rhs,
Register scratch,
Label* label) {
MOZ_ASSERT(cond == Assembler::NotEqual || cond == Assembler::Equal,
"other condition codes not supported");
MOZ_ASSERT(lhs.base != scratch);
MOZ_ASSERT(rhs.base != scratch);
loadPtr(rhs, scratch);
branchPtr(cond, lhs, scratch, label);
}
void MacroAssembler::branchPtr(Condition cond,
Register lhs,
Register rhs,
Label* label) {
Cmp(ARMRegister(lhs, 64), ARMRegister(rhs, 64));
B(label, cond);
}
void MacroAssembler::branchPtr(Condition cond,
Register lhs, Imm32 rhs,
Label* label) {
if (rhs.value == 0 && cond == Assembler::Equal) {
Cbz(ARMRegister(lhs, 64), label);
}
else if (rhs.value == 0 && cond == Assembler::NotEqual) {
Cbnz(ARMRegister(lhs, 64), label);
}
else {
cmpPtr(lhs, rhs);
B(label, cond);
}
}
void MacroAssembler::branchPtr(Condition cond,
Register lhs, ImmPtr rhs,
Label* label) {
if (rhs.value == 0 && cond == Assembler::Equal) {
Cbz(ARMRegister(lhs, 64), label);
}
else if (rhs.value == 0 && cond == Assembler::NotEqual) {
Cbnz(ARMRegister(lhs, 64), label);
}
else {
cmpPtr(lhs, rhs);
B(label, cond);
}
}
void MacroAssembler::branchPtr(Condition cond,
Register lhs, ImmGCPtr rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs);
movePtr(rhs, scratch);
branchPtr(cond, lhs, scratch, label);
}
void MacroAssembler::branchPtr(Condition cond,
Register lhs, ImmWord rhs,
Label* label) {
if (rhs.value == 0 && cond == Assembler::Equal) {
Cbz(ARMRegister(lhs, 64), label);
}
else if (rhs.value == 0 && cond == Assembler::NotEqual) {
Cbnz(ARMRegister(lhs, 64), label);
}
else {
cmpPtr(lhs, rhs);
B(label, cond);
}
}
void MacroAssembler::branchPtr(Condition cond,
const Address& lhs,
Register rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
MOZ_ASSERT(scratch != rhs);
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPtr(Condition cond,
const Address& lhs, ImmPtr rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPtr(Condition cond,
const Address& lhs, ImmGCPtr rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch1_64 = temps.AcquireX();
const ARMRegister scratch2_64 = temps.AcquireX();
MOZ_ASSERT(scratch1_64.asUnsized() != lhs.base);
MOZ_ASSERT(scratch2_64.asUnsized() != lhs.base);
movePtr(rhs, scratch1_64.asUnsized());
loadPtr(lhs, scratch2_64.asUnsized());
branchPtr(cond, scratch2_64.asUnsized(), scratch1_64.asUnsized(), label);
}
void MacroAssembler::branchPtr(Condition cond,
const Address& lhs, ImmWord rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPtr(Condition cond,
const AbsoluteAddress& lhs,
Register rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != rhs);
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPtr(Condition cond,
const AbsoluteAddress& lhs,
ImmWord rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPtr(Condition cond, wasm::SymbolicAddress lhs,
Register rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != rhs);
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPtr(Condition cond,
const BaseIndex& lhs,
ImmWord rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
MOZ_ASSERT(scratch != lhs.index);
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPtr(Condition cond,
const BaseIndex& lhs,
Register rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
MOZ_ASSERT(scratch != lhs.index);
loadPtr(lhs, scratch);
branchPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchPrivatePtr(Condition cond,
const Address& lhs,
Register rhs, Label* label) {
branchPtr(cond, lhs, rhs, label);
}
void MacroAssembler::branchFloat(DoubleCondition cond, FloatRegister lhs,
FloatRegister rhs, Label* label) {
compareFloat(lhs, rhs);
switch (cond) {
case DoubleNotEqual: {
Label unordered;
// not equal *and* ordered
branch(Overflow, &unordered);
branch(NotEqual, label);
bind(&unordered);
break;
}
case DoubleEqualOrUnordered:
branch(Overflow, label);
branch(Equal, label);
break;
default:
branch(Condition(cond), label);
}
}
void MacroAssembler::branchTruncateFloat32MaybeModUint32(FloatRegister src,
Register dest,
Label* fail) {
// Infallible operation on ARM64.
truncateFloat32ModUint32(src, dest);
}
void MacroAssembler::branchTruncateFloat32ToInt32(FloatRegister src,
Register dest, Label* fail) {
convertFloat32ToInt32(src, dest, fail,
false);
}
void MacroAssembler::branchDouble(DoubleCondition cond, FloatRegister lhs,
FloatRegister rhs, Label* label) {
compareDouble(lhs, rhs);
switch (cond) {
case DoubleNotEqual: {
Label unordered;
// not equal *and* ordered
branch(Overflow, &unordered);
branch(NotEqual, label);
bind(&unordered);
break;
}
case DoubleEqualOrUnordered:
branch(Overflow, label);
branch(Equal, label);
break;
default:
branch(Condition(cond), label);
}
}
void MacroAssembler::branchTruncateDoubleMaybeModUint32(FloatRegister src,
Register dest,
Label* fail) {
// ARMv8.3 chips support the FJCVTZS instruction, which handles exactly this
// logic.
if (hasFjcvtzs()) {
Fjcvtzs(ARMRegister(dest, 32), ARMFPRegister(src, 64));
return;
}
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
// An out of range integer will be saturated to the destination size.
ARMFPRegister src64(src, 64);
ARMRegister dest64(dest, 64);
MOZ_ASSERT(!scratch64.Is(dest64));
// Convert scalar to signed 64-bit fixed-point, rounding toward zero.
// In the case of overflow, the output is saturated.
// In the case of NaN and -0, the output is zero.
Fcvtzs(dest64, src64);
// Fail if the result is saturated, i.e. it's either INT64_MIN or INT64_MAX.
Add(scratch64, dest64, Operand(0x7fff
'ffff'ffff
'ffff));
Cmn(scratch64, 3);
B(fail, Assembler::Above);
// Clear upper 32 bits.
Uxtw(dest64, dest64);
}
void MacroAssembler::branchTruncateDoubleToInt32(FloatRegister src,
Register dest, Label* fail) {
ARMFPRegister src64(src, 64);
ARMRegister dest64(dest, 64);
ARMRegister dest32(dest, 32);
// Convert scalar to signed 64-bit fixed-point, rounding toward zero.
// In the case of overflow, the output is saturated.
// In the case of NaN and -0, the output is zero.
Fcvtzs(dest64, src64);
// Fail on overflow cases.
Cmp(dest64, Operand(dest32, vixl::SXTW));
B(fail, Assembler::NotEqual);
// Clear upper 32 bits.
Uxtw(dest64, dest64);
}
void MacroAssembler::branchInt64NotInPtrRange(Register64 src, Label* label) {
// No-op on 64-bit platforms.
}
void MacroAssembler::branchUInt64NotInPtrRange(Register64 src, Label* label) {
branchTest64(Assembler::
Signed, src, src, label);
}
template <
typename T>
void MacroAssembler::branchAdd32(Condition cond, T src,
Register dest,
Label* label) {
adds32(src, dest);
B(label, cond);
}
template <
typename T>
void MacroAssembler::branchSub32(Condition cond, T src,
Register dest,
Label* label) {
subs32(src, dest);
branch(cond, label);
}
template <
typename T>
void MacroAssembler::branchMul32(Condition cond, T src,
Register dest,
Label* label) {
MOZ_ASSERT(cond == Assembler::Overflow);
mul32(src, dest, dest, label);
}
template <
typename T>
void MacroAssembler::branchRshift32(Condition cond, T src,
Register dest,
Label* label) {
MOZ_ASSERT(cond == Zero || cond == NonZero);
rshift32(src, dest);
branch32(cond == Zero ? Equal : NotEqual, dest, Imm32(0), label);
}
void MacroAssembler::branchNeg32(Condition cond,
Register reg, Label* label) {
MOZ_ASSERT(cond == Overflow);
negs32(reg);
B(label, cond);
}
template <
typename T>
void MacroAssembler::branchAddPtr(Condition cond, T src,
Register dest,
Label* label) {
adds64(src, dest);
B(label, cond);
}
template <
typename T>
void MacroAssembler::branchSubPtr(Condition cond, T src,
Register dest,
Label* label) {
subs64(src, dest);
B(label, cond);
}
void MacroAssembler::branchMulPtr(Condition cond,
Register src,
Register dest,
Label* label) {
MOZ_ASSERT(cond == Assembler::Overflow);
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
const ARMRegister src64(src, 64);
const ARMRegister dest64(dest, 64);
Smulh(scratch64, dest64, src64);
Mul(dest64, dest64, src64);
Cmp(scratch64, Operand(dest64, vixl::ASR, 63));
B(label, NotEqual);
}
void MacroAssembler::branchNegPtr(Condition cond,
Register reg, Label* label) {
MOZ_ASSERT(cond == Overflow);
negs64(reg);
B(label, cond);
}
void MacroAssembler::decBranchPtr(Condition cond,
Register lhs, Imm32 rhs,
Label* label) {
Subs(ARMRegister(lhs, 64), ARMRegister(lhs, 64), Operand(rhs.value));
B(cond, label);
}
void MacroAssembler::branchTest32(Condition cond,
Register lhs,
Register rhs,
Label* label) {
MOZ_ASSERT(cond == Zero || cond == NonZero || cond ==
Signed ||
cond == NotSigned);
// The x86-biased front end prefers |test foo, foo| to |cmp foo, #0|. We look
// for the former pattern and expand as Cbz/Cbnz when possible.
if (lhs == rhs && cond == Zero) {
Cbz(ARMRegister(lhs, 32), label);
}
else if (lhs == rhs && cond == NonZero) {
Cbnz(ARMRegister(lhs, 32), label);
}
else {
test32(lhs, rhs);
B(label, cond);
}
}
void MacroAssembler::branchTest32(Condition cond,
Register lhs, Imm32 rhs,
Label* label) {
MOZ_ASSERT(cond == Zero || cond == NonZero || cond ==
Signed ||
cond == NotSigned);
test32(lhs, rhs);
B(label, cond);
}
void MacroAssembler::branchTest32(Condition cond,
const Address& lhs, Imm32 rhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
load32(lhs, scratch);
branchTest32(cond, scratch, rhs, label);
}
void MacroAssembler::branchTest32(Condition cond,
const AbsoluteAddress& lhs,
Imm32 rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
load32(lhs, scratch);
branchTest32(cond, scratch, rhs, label);
}
void MacroAssembler::branchTestPtr(Condition cond,
Register lhs,
Register rhs,
Label* label) {
// See branchTest32.
MOZ_ASSERT(cond == Zero || cond == NonZero || cond ==
Signed ||
cond == NotSigned);
if (lhs == rhs && cond == Zero) {
Cbz(ARMRegister(lhs, 64), label);
}
else if (lhs == rhs && cond == NonZero) {
Cbnz(ARMRegister(lhs, 64), label);
}
else {
Tst(ARMRegister(lhs, 64), Operand(ARMRegister(rhs, 64)));
B(label, cond);
}
}
void MacroAssembler::branchTestPtr(Condition cond,
Register lhs, Imm32 rhs,
Label* label) {
Tst(ARMRegister(lhs, 64), Operand(rhs.value));
B(label, cond);
}
void MacroAssembler::branchTestPtr(Condition cond,
Register lhs, ImmWord rhs,
Label* label) {
Tst(ARMRegister(lhs, 64), Operand(rhs.value));
B(label, cond);
}
void MacroAssembler::branchTestPtr(Condition cond,
const Address& lhs,
Imm32 rhs, Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const Register scratch = temps.AcquireX().asUnsized();
MOZ_ASSERT(scratch != lhs.base);
loadPtr(lhs, scratch);
branchTestPtr(cond, scratch, rhs, label);
}
void MacroAssembler::branchTest64(Condition cond, Register64 lhs,
Register64 rhs,
Register temp, Label* success,
Label* fail) {
branchTestPtr(cond, lhs.reg, rhs.reg, success);
if (fail) {
B(fail);
}
}
void MacroAssembler::branchTest64(Condition cond, Register64 lhs, Imm64 rhs,
Label* success, Label* fail) {
branchTestPtr(cond, lhs.reg, ImmWord(rhs.value), success);
if (fail) {
B(fail);
}
}
void MacroAssembler::branchTestUndefined(Condition cond,
Register tag,
Label* label) {
branchTestUndefinedImpl(cond, tag, label);
}
void MacroAssembler::branchTestUndefined(Condition cond,
const Address& address,
Label* label) {
branchTestUndefinedImpl(cond, address, label);
}
void MacroAssembler::branchTestUndefined(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestUndefinedImpl(cond, address, label);
}
void MacroAssembler::branchTestUndefined(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestUndefinedImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestUndefinedImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testUndefined(cond, t);
B(label, c);
}
void MacroAssembler::branchTestInt32(Condition cond,
Register tag,
Label* label) {
branchTestInt32Impl(cond, tag, label);
}
void MacroAssembler::branchTestInt32(Condition cond,
const Address& address,
Label* label) {
branchTestInt32Impl(cond, address, label);
}
void MacroAssembler::branchTestInt32(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestInt32Impl(cond, address, label);
}
void MacroAssembler::branchTestInt32(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestInt32Impl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestInt32Impl(Condition cond,
const T& t,
Label* label) {
Condition c = testInt32(cond, t);
B(label, c);
}
void MacroAssembler::branchTestInt32Truthy(
bool truthy,
const ValueOperand& value,
Label* label) {
Condition c = testInt32Truthy(truthy, value);
B(label, c);
}
void MacroAssembler::branchTestDouble(Condition cond,
Register tag,
Label* label) {
branchTestDoubleImpl(cond, tag, label);
}
void MacroAssembler::branchTestDouble(Condition cond,
const Address& address,
Label* label) {
branchTestDoubleImpl(cond, address, label);
}
void MacroAssembler::branchTestDouble(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestDoubleImpl(cond, address, label);
}
void MacroAssembler::branchTestDouble(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestDoubleImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestDoubleImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testDouble(cond, t);
B(label, c);
}
void MacroAssembler::branchTestDoubleTruthy(
bool truthy, FloatRegister reg,
Label* label) {
Fcmp(ARMFPRegister(reg, 64), 0.0);
if (!truthy) {
// falsy values are zero, and NaN.
branch(Zero, label);
branch(Overflow, label);
}
else {
// truthy values are non-zero and not nan.
// If it is overflow
Label onFalse;
branch(Zero, &onFalse);
branch(Overflow, &onFalse);
B(label);
bind(&onFalse);
}
}
void MacroAssembler::branchTestNumber(Condition cond,
Register tag,
Label* label) {
branchTestNumberImpl(cond, tag, label);
}
void MacroAssembler::branchTestNumber(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestNumberImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestNumberImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testNumber(cond, t);
B(label, c);
}
void MacroAssembler::branchTestBoolean(Condition cond,
Register tag,
Label* label) {
branchTestBooleanImpl(cond, tag, label);
}
void MacroAssembler::branchTestBoolean(Condition cond,
const Address& address,
Label* label) {
branchTestBooleanImpl(cond, address, label);
}
void MacroAssembler::branchTestBoolean(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestBooleanImpl(cond, address, label);
}
void MacroAssembler::branchTestBoolean(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestBooleanImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestBooleanImpl(Condition cond,
const T& tag,
Label* label) {
Condition c = testBoolean(cond, tag);
B(label, c);
}
void MacroAssembler::branchTestBooleanTruthy(
bool truthy,
const ValueOperand& value,
Label* label) {
Condition c = testBooleanTruthy(truthy, value);
B(label, c);
}
void MacroAssembler::branchTestString(Condition cond,
Register tag,
Label* label) {
branchTestStringImpl(cond, tag, label);
}
void MacroAssembler::branchTestString(Condition cond,
const Address& address,
Label* label) {
branchTestStringImpl(cond, address, label);
}
void MacroAssembler::branchTestString(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestStringImpl(cond, address, label);
}
void MacroAssembler::branchTestString(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestStringImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestStringImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testString(cond, t);
B(label, c);
}
void MacroAssembler::branchTestStringTruthy(
bool truthy,
const ValueOperand& value,
Label* label) {
Condition c = testStringTruthy(truthy, value);
B(label, c);
}
void MacroAssembler::branchTestSymbol(Condition cond,
Register tag,
Label* label) {
branchTestSymbolImpl(cond, tag, label);
}
void MacroAssembler::branchTestSymbol(Condition cond,
const Address& address,
Label* label) {
branchTestSymbolImpl(cond, address, label);
}
void MacroAssembler::branchTestSymbol(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestSymbolImpl(cond, address, label);
}
void MacroAssembler::branchTestSymbol(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestSymbolImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestSymbolImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testSymbol(cond, t);
B(label, c);
}
void MacroAssembler::branchTestBigInt(Condition cond,
Register tag,
Label* label) {
branchTestBigIntImpl(cond, tag, label);
}
void MacroAssembler::branchTestBigInt(Condition cond,
const Address& address,
Label* label) {
branchTestBigIntImpl(cond, address, label);
}
void MacroAssembler::branchTestBigInt(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestBigIntImpl(cond, address, label);
}
void MacroAssembler::branchTestBigInt(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestBigIntImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestBigIntImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testBigInt(cond, t);
B(label, c);
}
void MacroAssembler::branchTestBigIntTruthy(
bool truthy,
const ValueOperand& value,
Label* label) {
Condition c = testBigIntTruthy(truthy, value);
B(label, c);
}
void MacroAssembler::branchTestNull(Condition cond,
Register tag,
Label* label) {
branchTestNullImpl(cond, tag, label);
}
void MacroAssembler::branchTestNull(Condition cond,
const Address& address,
Label* label) {
branchTestNullImpl(cond, address, label);
}
void MacroAssembler::branchTestNull(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestNullImpl(cond, address, label);
}
void MacroAssembler::branchTestNull(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestNullImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestNullImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testNull(cond, t);
B(label, c);
}
void MacroAssembler::branchTestObject(Condition cond,
Register tag,
Label* label) {
branchTestObjectImpl(cond, tag, label);
}
void MacroAssembler::branchTestObject(Condition cond,
const Address& address,
Label* label) {
branchTestObjectImpl(cond, address, label);
}
void MacroAssembler::branchTestObject(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestObjectImpl(cond, address, label);
}
void MacroAssembler::branchTestObject(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestObjectImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestObjectImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testObject(cond, t);
B(label, c);
}
void MacroAssembler::branchTestGCThing(Condition cond,
const Address& address,
Label* label) {
branchTestGCThingImpl(cond, address, label);
}
void MacroAssembler::branchTestGCThing(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestGCThingImpl(cond, address, label);
}
void MacroAssembler::branchTestGCThing(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestGCThingImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestGCThingImpl(Condition cond,
const T& src,
Label* label) {
Condition c = testGCThing(cond, src);
B(label, c);
}
void MacroAssembler::branchTestPrimitive(Condition cond,
Register tag,
Label* label) {
branchTestPrimitiveImpl(cond, tag, label);
}
void MacroAssembler::branchTestPrimitive(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestPrimitiveImpl(cond, value, label);
}
template <
typename T>
void MacroAssembler::branchTestPrimitiveImpl(Condition cond,
const T& t,
Label* label) {
Condition c = testPrimitive(cond, t);
B(label, c);
}
void MacroAssembler::branchTestMagic(Condition cond,
Register tag,
Label* label) {
branchTestMagicImpl(cond, tag, label);
}
void MacroAssembler::branchTestMagic(Condition cond,
const Address& address,
Label* label) {
branchTestMagicImpl(cond, address, label);
}
void MacroAssembler::branchTestMagic(Condition cond,
const BaseIndex& address,
Label* label) {
branchTestMagicImpl(cond, address, label);
}
void MacroAssembler::branchTestMagic(Condition cond,
const ValueOperand& value,
Label* label) {
branchTestMagicImpl(cond, value, label);
}
template <
typename T,
class L>
void MacroAssembler::branchTestMagicImpl(Condition cond,
const T& t, L label) {
Condition c = testMagic(cond, t);
B(label, c);
}
void MacroAssembler::branchTestMagic(Condition cond,
const Address& valaddr,
JSWhyMagic why, Label* label) {
uint64_t magic = MagicValue(why).asRawBits();
cmpPtr(valaddr, ImmWord(magic));
B(label, cond);
}
template <
typename T>
void MacroAssembler::branchTestValue(Condition cond,
const T& lhs,
const ValueOperand& rhs, Label* label) {
MOZ_ASSERT(cond == Assembler::Equal || cond == Assembler::NotEqual);
branchPtr(cond, lhs, rhs.valueReg(), label);
}
template <
typename T>
void MacroAssembler::testNumberSet(Condition cond,
const T& src,
Register dest) {
cond = testNumber(cond, src);
emitSet(cond, dest);
}
template <
typename T>
void MacroAssembler::testBooleanSet(Condition cond,
const T& src,
Register dest) {
cond = testBoolean(cond, src);
emitSet(cond, dest);
}
template <
typename T>
void MacroAssembler::testStringSet(Condition cond,
const T& src,
Register dest) {
cond = testString(cond, src);
emitSet(cond, dest);
}
template <
typename T>
void MacroAssembler::testSymbolSet(Condition cond,
const T& src,
Register dest) {
cond = testSymbol(cond, src);
emitSet(cond, dest);
}
template <
typename T>
void MacroAssembler::testBigIntSet(Condition cond,
const T& src,
Register dest) {
cond = testBigInt(cond, src);
emitSet(cond, dest);
}
void MacroAssembler::branchToComputedAddress(
const BaseIndex& addr) {
vixl::UseScratchRegisterScope temps(&this->asVIXL());
const ARMRegister scratch64 = temps.AcquireX();
loadPtr(addr, scratch64.asUnsized());
Br(scratch64);
}
void MacroAssembler::cmp32Move32(Condition cond,
Register lhs, Imm32 rhs,
Register src,
Register dest) {
cmp32(lhs, rhs);
Csel(ARMRegister(dest, 32), ARMRegister(src, 32), ARMRegister(dest, 32),
cond);
}
void MacroAssembler::cmp32Move32(Condition cond,
Register lhs,
Register rhs,
Register src,
Register dest) {
cmp32(lhs, rhs);
Csel(ARMRegister(dest, 32), ARMRegister(src, 32), ARMRegister(dest, 32),
cond);
}
void MacroAssembler::cmp32Move32(Condition cond,
Register lhs,
const Address& rhs,
Register src,
Register dest) {
MOZ_CRASH(
"NYI");
}
void MacroAssembler::cmpPtrMovePtr(Condition cond,
Register lhs, Imm32 rhs,
Register src,
Register dest) {
cmpPtr(lhs, rhs);
Csel(ARMRegister(dest, 64), ARMRegister(src, 64), ARMRegister(dest, 64),
cond);
}
void MacroAssembler::cmpPtrMovePtr(Condition cond,
Register lhs,
Register rhs,
Register src,
Register dest) {
cmpPtr(lhs, rhs);
Csel(ARMRegister(dest, 64), ARMRegister(src, 64), ARMRegister(dest, 64),
cond);
}
void MacroAssembler::cmpPtrMovePtr(Condition cond,
Register lhs,
const Address& rhs,
Register src,
Register dest) {
MOZ_CRASH(
"NYI");
}
void MacroAssembler::cmp32Load32(Condition cond,
Register lhs,
const Address& rhs,
const Address& src,
Register dest) {
MOZ_CRASH(
"NYI");
}
void MacroAssembler::cmp32Load32(Condition cond,
Register lhs,
Register rhs,
const Address& src,
Register dest) {
MOZ_CRASH(
"NYI");
}
void MacroAssembler::cmp32Load32(Condition cond,
Register lhs, Imm32 rhs,
const Address& src,
Register dest) {
// Can't use branch32() here, because it may select Cbz/Cbnz which don't
// affect condition flags.
Label done;
cmp32(lhs, rhs);
B(&done, Assembler::InvertCondition(cond));
// ARM64 does not support conditional loads, so we use a branch with a CSel
// (to prevent Spectre attacks).
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
load32(src, scratch32.asUnsized());
Csel(ARMRegister(dest, 32), scratch32, ARMRegister(dest, 32), cond);
bind(&done);
}
void MacroAssembler::cmp32MovePtr(Condition cond,
Register lhs, Imm32 rhs,
Register src,
Register dest) {
cmp32(lhs, rhs);
Csel(ARMRegister(dest, 64), ARMRegister(src, 64), ARMRegister(dest, 64),
cond);
}
void MacroAssembler::cmp32LoadPtr(Condition cond,
const Address& lhs, Imm32 rhs,
const Address& src,
Register dest) {
// Can't use branch32() here, because it may select Cbz/Cbnz which don't
// affect condition flags.
Label done;
cmp32(lhs, rhs);
B(&done, Assembler::InvertCondition(cond));
// ARM64 does not support conditional loads, so we use a branch with a CSel
// (to prevent Spectre attacks).
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
loadPtr(src, scratch64.asUnsized());
Csel(ARMRegister(dest, 64), scratch64, ARMRegister(dest, 64), cond);
bind(&done);
}
void MacroAssembler::test32LoadPtr(Condition cond,
const Address& addr,
Imm32 mask,
const Address& src,
Register dest) {
MOZ_ASSERT(cond == Assembler::Zero || cond == Assembler::NonZero);
Label done;
branchTest32(Assembler::InvertCondition(cond), addr, mask, &done);
// ARM64 does not support conditional loads, so we use a branch with a CSel
// (to prevent Spectre attacks).
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch64 = temps.AcquireX();
loadPtr(src, scratch64.asUnsized());
Csel(ARMRegister(dest, 64), scratch64, ARMRegister(dest, 64), cond);
bind(&done);
}
void MacroAssembler::test32MovePtr(Condition cond,
Register operand, Imm32 mask,
Register src,
Register dest) {
MOZ_ASSERT(cond == Assembler::Zero || cond == Assembler::NonZero);
test32(operand, mask);
Csel(ARMRegister(dest, 64), ARMRegister(src, 64), ARMRegister(dest, 64),
cond);
}
void MacroAssembler::test32MovePtr(Condition cond,
const Address& addr,
Imm32 mask,
Register src,
Register dest) {
MOZ_ASSERT(cond == Assembler::Zero || cond == Assembler::NonZero);
test32(addr, mask);
Csel(ARMRegister(dest, 64), ARMRegister(src, 64), ARMRegister(dest, 64),
cond);
}
void MacroAssembler::spectreMovePtr(Condition cond,
Register src,
Register dest) {
Csel(ARMRegister(dest, 64), ARMRegister(src, 64), ARMRegister(dest, 64),
cond);
}
void MacroAssembler::spectreZeroRegister(Condition cond,
Register,
Register dest) {
Csel(ARMRegister(dest, 64), ARMRegister(dest, 64), vixl::xzr,
Assembler::InvertCondition(cond));
}
void MacroAssembler::spectreBoundsCheck32(
Register index,
Register length,
Register maybeScratch,
Label* failure) {
MOZ_ASSERT(length != maybeScratch);
MOZ_ASSERT(index != maybeScratch);
branch32(Assembler::BelowOrEqual, length, index, failure);
if (JitOptions.spectreIndexMasking) {
Csel(ARMRegister(index, 32), ARMRegister(index, 32), vixl::wzr,
Assembler::Above);
}
}
void MacroAssembler::spectreBoundsCheck32(
Register index,
const Address& length,
Register maybeScratch,
Label* failure) {
MOZ_ASSERT(index != length.base);
MOZ_ASSERT(length.base != maybeScratch);
MOZ_ASSERT(index != maybeScratch);
branch32(Assembler::BelowOrEqual, length, index, failure);
if (JitOptions.spectreIndexMasking) {
Csel(ARMRegister(index, 32), ARMRegister(index, 32), vixl::wzr,
Assembler::Above);
}
}
void MacroAssembler::spectreBoundsCheckPtr(
Register index,
Register length,
Register maybeScratch,
Label* failure) {
MOZ_ASSERT(length != maybeScratch);
MOZ_ASSERT(index != maybeScratch);
branchPtr(Assembler::BelowOrEqual, length, index, failure);
if (JitOptions.spectreIndexMasking) {
Csel(ARMRegister(index, 64), ARMRegister(index, 64), vixl::xzr,
Assembler::Above);
}
}
void MacroAssembler::spectreBoundsCheckPtr(
Register index,
const Address& length,
Register maybeScratch,
Label* failure) {
MOZ_ASSERT(index != length.base);
MOZ_ASSERT(length.base != maybeScratch);
MOZ_ASSERT(index != maybeScratch);
branchPtr(Assembler::BelowOrEqual, length, index, failure);
if (JitOptions.spectreIndexMasking) {
Csel(ARMRegister(index, 64), ARMRegister(index, 64), vixl::xzr,
Assembler::Above);
}
}
// ========================================================================
// Memory access primitives.
FaultingCodeOffset MacroAssembler::storeUncanonicalizedDouble(
FloatRegister src,
const Address& dest) {
return Str(ARMFPRegister(src, 64), toMemOperand(dest));
}
FaultingCodeOffset MacroAssembler::storeUncanonicalizedDouble(
FloatRegister src,
const BaseIndex& dest) {
return doBaseIndex(ARMFPRegister(src, 64), dest, vixl::STR_d);
}
FaultingCodeOffset MacroAssembler::storeUncanonicalizedFloat32(
FloatRegister src,
const Address& addr) {
return Str(ARMFPRegister(src, 32), toMemOperand(addr));
}
FaultingCodeOffset MacroAssembler::storeUncanonicalizedFloat32(
FloatRegister src,
const BaseIndex& addr) {
return doBaseIndex(ARMFPRegister(src, 32), addr, vixl::STR_s);
}
FaultingCodeOffset MacroAssembler::storeUncanonicalizedFloat16(
FloatRegister src,
const Address& dest,
Register) {
return Str(ARMFPRegister(src, 16), toMemOperand(dest));
}
FaultingCodeOffset MacroAssembler::storeUncanonicalizedFloat16(
FloatRegister src,
const BaseIndex& dest,
Register) {
return doBaseIndex(ARMFPRegister(src, 16), dest, vixl::STR_h);
}
void MacroAssembler::memoryBarrier(MemoryBarrier barrier) {
// Bug 1715494: Discriminating barriers such as StoreStore are hard to reason
// about. Execute the full barrier for everything that requires a barrier.
if (!barrier.isNone()) {
Dmb(vixl::InnerShareable, vixl::BarrierAll);
}
}
// ===============================================================
// Clamping functions.
void MacroAssembler::clampIntToUint8(
Register reg) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch32 = temps.AcquireW();
const ARMRegister reg32(reg, 32);
MOZ_ASSERT(!scratch32.Is(reg32));
Cmp(reg32, Operand(reg32, vixl::UXTB));
Csel(reg32, reg32, vixl::wzr, Assembler::GreaterThanOrEqual);
Mov(scratch32, Operand(0xff));
Csel(reg32, reg32, scratch32, Assembler::LessThanOrEqual);
}
void MacroAssembler::fallibleUnboxPtr(
const ValueOperand& src,
Register dest,
JSValueType type, Label* fail) {
MOZ_ASSERT(type == JSVAL_TYPE_OBJECT || type == JSVAL_TYPE_STRING ||
type == JSVAL_TYPE_SYMBOL || type == JSVAL_TYPE_BIGINT);
// dest := src XOR mask
// fail if dest >> JSVAL_TAG_SHIFT != 0
const ARMRegister src64(src.valueReg(), 64);
const ARMRegister dest64(dest, 64);
Eor(dest64, src64, Operand(JSVAL_TYPE_TO_SHIFTED_TAG(type)));
Cmp(vixl::xzr, Operand(dest64, vixl::LSR, JSVAL_TAG_SHIFT));
j(Assembler::NotEqual, fail);
}
void MacroAssembler::fallibleUnboxPtr(
const Address& src,
Register dest,
JSValueType type, Label* fail) {
loadValue(src, ValueOperand(dest));
fallibleUnboxPtr(ValueOperand(dest), dest, type, fail);
}
void MacroAssembler::fallibleUnboxPtr(
const BaseIndex& src,
Register dest,
JSValueType type, Label* fail) {
loadValue(src, ValueOperand(dest));
fallibleUnboxPtr(ValueOperand(dest), dest, type, fail);
}
//}}} check_macroassembler_style
// Wasm SIMD
static inline ARMFPRegister SimdReg(FloatRegister r) {
MOZ_ASSERT(r.isSimd128());
return ARMFPRegister(r, 128);
}
static inline ARMFPRegister Simd16B(FloatRegister r) {
return SimdReg(r).V16B();
}
static inline ARMFPRegister Simd8B(FloatRegister r) {
return SimdReg(r).V8B(); }
static inline ARMFPRegister Simd8H(FloatRegister r) {
return SimdReg(r).V8H(); }
static inline ARMFPRegister Simd4H(FloatRegister r) {
return SimdReg(r).V4H(); }
static inline ARMFPRegister Simd4S(FloatRegister r) {
return SimdReg(r).V4S(); }
static inline ARMFPRegister Simd2S(FloatRegister r) {
return SimdReg(r).V2S(); }
static inline ARMFPRegister Simd2D(FloatRegister r) {
return SimdReg(r).V2D(); }
static inline ARMFPRegister Simd1D(FloatRegister r) {
return SimdReg(r).V1D(); }
static inline ARMFPRegister SimdQ(FloatRegister r) {
return SimdReg(r).Q(); }
//{{{ check_macroassembler_style
// Moves
void MacroAssembler::moveSimd128(FloatRegister src, FloatRegister dest) {
if (src != dest) {
Mov(SimdReg(dest), SimdReg(src));
}
}
void MacroAssembler::loadConstantSimd128(
const SimdConstant& v,
FloatRegister dest) {
// Movi does not yet generate good code for many cases, bug 1664397.
SimdConstant c = SimdConstant::CreateX2((
const int64_t*)v.bytes());
Movi(SimdReg(dest), c.asInt64x2()[1], c.asInt64x2()[0]);
}
// Splat
void MacroAssembler::splatX16(
Register src, FloatRegister dest) {
Dup(Simd16B(dest), ARMRegister(src, 32));
}
void MacroAssembler::splatX16(uint32_t srcLane, FloatRegister src,
FloatRegister dest) {
Dup(Simd16B(dest), Simd16B(src), srcLane);
}
void MacroAssembler::splatX8(
Register src, FloatRegister dest) {
Dup(Simd8H(dest), ARMRegister(src, 32));
}
void MacroAssembler::splatX8(uint32_t srcLane, FloatRegister src,
FloatRegister dest) {
Dup(Simd8H(dest), Simd8H(src), srcLane);
}
void MacroAssembler::splatX4(
Register src, FloatRegister dest) {
Dup(Simd4S(dest), ARMRegister(src, 32));
}
void MacroAssembler::splatX4(FloatRegister src, FloatRegister dest) {
Dup(Simd4S(dest), ARMFPRegister(src), 0);
}
void MacroAssembler::splatX2(Register64 src, FloatRegister dest) {
Dup(Simd2D(dest), ARMRegister(src.reg, 64));
}
void MacroAssembler::splatX2(FloatRegister src, FloatRegister dest) {
Dup(Simd2D(dest), ARMFPRegister(src), 0);
}
// Extract lane as scalar. Float extraction does not canonicalize the value.
void MacroAssembler::extractLaneInt8x16(uint32_t lane, FloatRegister src,
Register dest_) {
MOZ_ASSERT(lane < 16);
ARMRegister dest(dest_, 32);
Umov(dest, Simd4S(src), lane / 4);
Sbfx(dest, dest, (lane % 4) * 8, 8);
}
void MacroAssembler::unsignedExtractLaneInt8x16(uint32_t lane,
FloatRegister src,
Register dest_) {
MOZ_ASSERT(lane < 16);
ARMRegister dest(dest_, 32);
Umov(dest, Simd4S(src), lane / 4);
Ubfx(dest, dest, (lane % 4) * 8, 8);
}
void MacroAssembler::extractLaneInt16x8(uint32_t lane, FloatRegister src,
Register dest_) {
MOZ_ASSERT(lane < 8);
ARMRegister dest(dest_, 32);
Umov(dest, Simd4S(src), lane / 2);
Sbfx(dest, dest, (lane % 2) * 16, 16);
}
void MacroAssembler::unsignedExtractLaneInt16x8(uint32_t lane,
FloatRegister src,
Register dest_) {
MOZ_ASSERT(lane < 8);
ARMRegister dest(dest_, 32);
Umov(dest, Simd4S(src), lane / 2);
Ubfx(dest, dest, (lane % 2) * 16, 16);
}
void MacroAssembler::extractLaneInt32x4(uint32_t lane, FloatRegister src,
Register dest_) {
MOZ_ASSERT(lane < 4);
ARMRegister dest(dest_, 32);
Umov(dest, Simd4S(src), lane);
}
void MacroAssembler::extractLaneInt64x2(uint32_t lane, FloatRegister src,
Register64 dest_) {
MOZ_ASSERT(lane < 2);
ARMRegister dest(dest_.reg, 64);
Umov(dest, Simd2D(src), lane);
}
void MacroAssembler::extractLaneFloat32x4(uint32_t lane, FloatRegister src,
FloatRegister dest) {
MOZ_ASSERT(lane < 4);
Mov(ARMFPRegister(dest).V4S(), 0, Simd4S(src), lane);
}
void MacroAssembler::extractLaneFloat64x2(uint32_t lane, FloatRegister src,
FloatRegister dest) {
MOZ_ASSERT(lane < 2);
Mov(ARMFPRegister(dest).V2D(), 0, Simd2D(src), lane);
}
// Replace lane value
void MacroAssembler::replaceLaneInt8x16(
unsigned lane,
Register rhs,
FloatRegister lhsDest) {
MOZ_ASSERT(lane < 16);
Mov(Simd16B(lhsDest), lane, ARMRegister(rhs, 32));
}
void MacroAssembler::replaceLaneInt16x8(
unsigned lane,
Register rhs,
FloatRegister lhsDest) {
MOZ_ASSERT(lane < 8);
Mov(Simd8H(lhsDest), lane, ARMRegister(rhs, 32));
}
void MacroAssembler::replaceLaneInt32x4(
unsigned lane,
Register rhs,
FloatRegister lhsDest) {
MOZ_ASSERT(lane < 4);
Mov(Simd4S(lhsDest), lane, ARMRegister(rhs, 32));
}
void MacroAssembler::replaceLaneInt64x2(
unsigned lane, Register64 rhs,
FloatRegister lhsDest) {
MOZ_ASSERT(lane < 2);
Mov(Simd2D(lhsDest), lane, ARMRegister(rhs.reg, 64));
}
void MacroAssembler::replaceLaneFloat32x4(
unsigned lane, FloatRegister rhs,
FloatRegister lhsDest) {
MOZ_ASSERT(lane < 4);
Mov(Simd4S(lhsDest), lane, ARMFPRegister(rhs).V4S(), 0);
}
void MacroAssembler::replaceLaneFloat64x2(
unsigned lane, FloatRegister rhs,
FloatRegister lhsDest) {
MOZ_ASSERT(lane < 2);
Mov(Simd2D(lhsDest), lane, ARMFPRegister(rhs).V2D(), 0);
}
// Shuffle - blend and permute with immediate indices, and its many
// specializations. Lane values other than those mentioned are illegal.
// lane values 0..31
void MacroAssembler::shuffleInt8x16(
const uint8_t lanes[16], FloatRegister lhs,
FloatRegister rhs, FloatRegister dest) {
// The general solution generates ho-hum code. Realistic programs will use
// patterns that can be specialized, and this will be much better. That will
// be handled by bug 1656834, so don't worry about it here.
// Set scratch to the lanevalue when it selects from lhs or ~lanevalue when it
// selects from rhs.
ScratchSimd128Scope scratch(*
this);
int8_t idx[16];
if (lhs == rhs) {
for (
unsigned i = 0; i < 16; i++) {
idx[i] = lanes[i] < 16 ? lanes[i] : (lanes[i] - 16);
}
loadConstantSimd128(SimdConstant::CreateX16(idx), scratch);
Tbl(Simd16B(dest), Simd16B(lhs), Simd16B(scratch));
return;
}
if (rhs != dest) {
for (
unsigned i = 0; i < 16; i++) {
idx[i] = lanes[i] < 16 ? lanes[i] : ~(lanes[i] - 16);
}
}
else {
MOZ_ASSERT(lhs != dest);
for (
unsigned i = 0; i < 16; i++) {
idx[i] = lanes[i] < 16 ? ~lanes[i] : (lanes[i] - 16);
}
std::swap(lhs, rhs);
}
loadConstantSimd128(SimdConstant::CreateX16(idx), scratch);
Tbl(Simd16B(dest), Simd16B(lhs), Simd16B(scratch));
Not(Simd16B(scratch), Simd16B(scratch));
Tbx(Simd16B(dest), Simd16B(rhs), Simd16B(scratch));
}
void MacroAssembler::shuffleInt8x16(
const uint8_t lanes[16], FloatRegister rhs,
FloatRegister lhsDest) {
shuffleInt8x16(lanes, lhsDest, rhs, lhsDest);
}
void MacroAssembler::blendInt8x16(
const uint8_t lanes[16], FloatRegister lhs,
FloatRegister rhs, FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
int8_t lanes_[16];
if (rhs == dest) {
for (
unsigned i = 0; i < 16; i++) {
lanes_[i] = lanes[i] == 0 ? i : 16 + i;
}
loadConstantSimd128(SimdConstant::CreateX16(lanes_), scratch);
Tbx(Simd16B(dest), Simd16B(lhs), Simd16B(scratch));
return;
}
moveSimd128(lhs, dest);
for (
unsigned i = 0; i < 16; i++) {
lanes_[i] = lanes[i] != 0 ? i : 16 + i;
}
loadConstantSimd128(SimdConstant::CreateX16(lanes_), scratch);
Tbx(Simd16B(dest), Simd16B(rhs), Simd16B(scratch));
}
void MacroAssembler::blendInt16x8(
const uint16_t lanes[8], FloatRegister lhs,
FloatRegister rhs, FloatRegister dest) {
static_assert(
sizeof(
const uint16_t
/*lanes*/[8]) == sizeof(uint8_t[16]));
blendInt8x16(
reinterpret_cast<
const uint8_t*>(lanes), lhs, rhs, dest);
}
void MacroAssembler::laneSelectSimd128(FloatRegister mask, FloatRegister lhs,
FloatRegister rhs, FloatRegister dest) {
MOZ_ASSERT(mask == dest);
Bsl(Simd16B(mask), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::interleaveHighInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip2(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::interleaveHighInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip2(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::interleaveHighInt64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip2(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
void MacroAssembler::interleaveHighInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip2(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::interleaveLowInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip1(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::interleaveLowInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip1(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::interleaveLowInt64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip1(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
void MacroAssembler::interleaveLowInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Zip1(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::permuteInt8x16(
const uint8_t lanes[16], FloatRegister src,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
loadConstantSimd128(SimdConstant::CreateX16((
const int8_t*)lanes), scratch);
Tbl(Simd16B(dest), Simd16B(src), Simd16B(scratch));
}
void MacroAssembler::permuteInt16x8(
const uint16_t lanes[8], FloatRegister src,
FloatRegister dest) {
MOZ_ASSERT(lanes[0] < 8 && lanes[1] < 8 && lanes[2] < 8 && lanes[3] < 8 &&
lanes[4] < 8 && lanes[5] < 8 && lanes[6] < 8 && lanes[7] < 8);
const int8_t lanes_[16] = {
(int8_t)(lanes[0] << 1), (int8_t)((lanes[0] << 1) + 1),
(int8_t)(lanes[1] << 1), (int8_t)((lanes[1] << 1) + 1),
(int8_t)(lanes[2] << 1), (int8_t)((lanes[2] << 1) + 1),
(int8_t)(lanes[3] << 1), (int8_t)((lanes[3] << 1) + 1),
(int8_t)(lanes[4] << 1), (int8_t)((lanes[4] << 1) + 1),
(int8_t)(lanes[5] << 1), (int8_t)((lanes[5] << 1) + 1),
(int8_t)(lanes[6] << 1), (int8_t)((lanes[6] << 1) + 1),
(int8_t)(lanes[7] << 1), (int8_t)((lanes[7] << 1) + 1),
};
ScratchSimd128Scope scratch(*
this);
loadConstantSimd128(SimdConstant::CreateX16(lanes_), scratch);
Tbl(Simd16B(dest), Simd16B(src), Simd16B(scratch));
}
void MacroAssembler::permuteInt32x4(
const uint32_t lanes[4], FloatRegister src,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
const int8_t lanes_[16] = {
(int8_t)(lanes[0] << 2), (int8_t)((lanes[0] << 2) + 1),
(int8_t)((lanes[0] << 2) + 2), (int8_t)((lanes[0] << 2) + 3),
(int8_t)(lanes[1] << 2), (int8_t)((lanes[1] << 2) + 1),
(int8_t)((lanes[1] << 2) + 2), (int8_t)((lanes[1] << 2) + 3),
(int8_t)(lanes[2] << 2), (int8_t)((lanes[2] << 2) + 1),
(int8_t)((lanes[2] << 2) + 2), (int8_t)((lanes[2] << 2) + 3),
(int8_t)(lanes[3] << 2), (int8_t)((lanes[3] << 2) + 1),
(int8_t)((lanes[3] << 2) + 2), (int8_t)((lanes[3] << 2) + 3),
};
loadConstantSimd128(SimdConstant::CreateX16(lanes_), scratch);
Tbl(Simd16B(dest), Simd16B(src), Simd16B(scratch));
}
void MacroAssembler::rotateRightSimd128(FloatRegister src, FloatRegister dest,
uint32_t shift) {
Ext(Simd16B(dest), Simd16B(src), Simd16B(src), shift);
}
void MacroAssembler::leftShiftSimd128(Imm32 count, FloatRegister src,
FloatRegister dest) {
MOZ_ASSERT(count.value < 16);
ScratchSimd128Scope scratch(*
this);
Movi(Simd16B(scratch), 0);
Ext(Simd16B(dest), Simd16B(scratch), Simd16B(src), 16 - count.value);
}
void MacroAssembler::rightShiftSimd128(Imm32 count, FloatRegister src,
FloatRegister dest) {
MOZ_ASSERT(count.value < 16);
ScratchSimd128Scope scratch(*
this);
Movi(Simd16B(scratch), 0);
Ext(Simd16B(dest), Simd16B(src), Simd16B(scratch), count.value);
}
void MacroAssembler::concatAndRightShiftSimd128(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest,
uint32_t shift) {
MOZ_ASSERT(shift < 16);
Ext(Simd16B(dest), Simd16B(rhs), Simd16B(lhs), shift);
}
// Zero extend int values.
void MacroAssembler::zeroExtend8x16To16x8(FloatRegister src,
FloatRegister dest) {
Ushll(Simd8H(dest), Simd8B(src), 0);
}
void MacroAssembler::zeroExtend8x16To32x4(FloatRegister src,
FloatRegister dest) {
Ushll(Simd8H(dest), Simd8B(src), 0);
Ushll(Simd4S(dest), Simd4H(dest), 0);
}
void MacroAssembler::zeroExtend8x16To64x2(FloatRegister src,
FloatRegister dest) {
Ushll(Simd8H(dest), Simd8B(src), 0);
Ushll(Simd4S(dest), Simd4H(dest), 0);
Ushll(Simd2D(dest), Simd2S(dest), 0);
}
void MacroAssembler::zeroExtend16x8To32x4(FloatRegister src,
FloatRegister dest) {
Ushll(Simd4S(dest), Simd4H(src), 0);
}
void MacroAssembler::zeroExtend16x8To64x2(FloatRegister src,
FloatRegister dest) {
Ushll(Simd4S(dest), Simd4H(src), 0);
Ushll(Simd2D(dest), Simd2S(dest), 0);
}
void MacroAssembler::zeroExtend32x4To64x2(FloatRegister src,
FloatRegister dest) {
Ushll(Simd2D(dest), Simd2S(src), 0);
}
// Reverse bytes in lanes.
void MacroAssembler::reverseInt16x8(FloatRegister src, FloatRegister dest) {
Rev16(Simd16B(dest), Simd16B(src));
}
void MacroAssembler::reverseInt32x4(FloatRegister src, FloatRegister dest) {
Rev32(Simd16B(dest), Simd16B(src));
}
void MacroAssembler::reverseInt64x2(FloatRegister src, FloatRegister dest) {
Rev64(Simd16B(dest), Simd16B(src));
}
// Swizzle - permute with variable indices. `rhs` holds the lanes parameter.
void MacroAssembler::swizzleInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Tbl(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::swizzleInt8x16Relaxed(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Tbl(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
// Integer Add
void MacroAssembler::addInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Add(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::addInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Add(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::addInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Add(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::addInt64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Add(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// Integer Subtract
void MacroAssembler::subInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sub(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::subInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sub(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::subInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sub(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::subInt64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sub(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// Integer Multiply
void MacroAssembler::mulInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Mul(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::mulInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Mul(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::mulInt64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest, FloatRegister temp1,
FloatRegister temp2) {
// As documented at https://chromium-review.googlesource.com/c/v8/v8/+/1781696
// lhs = <D C> <B A>
// rhs = <H G> <F E>
// result = <(DG+CH)_low+CG_high CG_low> <(BE+AF)_low+AE_high AE_low>
ScratchSimd128Scope scratch(*
this);
Rev64(Simd4S(temp2), Simd4S(lhs));
// temp2 = <C D> <A B>
Mul(Simd4S(temp2), Simd4S(temp2), Simd4S(rhs));
// temp2 = <CH DG> <AF BE>
Xtn(Simd2S(temp1), Simd2D(rhs));
// temp1 = <0 0> <G E>
Addp(Simd4S(temp2), Simd4S(temp2), Simd4S(temp2));
// temp2 = <CH+DG AF+BE>..
Xtn(Simd2S(scratch), Simd2D(lhs));
// scratch = <0 0> <C A>
Shll(Simd2D(dest), Simd2S(temp2), 32);
// dest = <(DG+CH)_low 0>
// <(BE+AF)_low 0>
Umlal(Simd2D(dest), Simd2S(scratch), Simd2S(temp1));
}
void MacroAssembler::extMulLowInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smull(Simd8H(dest), Simd8B(lhs), Simd8B(rhs));
}
void MacroAssembler::extMulHighInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smull2(Simd8H(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::unsignedExtMulLowInt8x16(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Umull(Simd8H(dest), Simd8B(lhs), Simd8B(rhs));
}
void MacroAssembler::unsignedExtMulHighInt8x16(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Umull2(Simd8H(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::extMulLowInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smull(Simd4S(dest), Simd4H(lhs), Simd4H(rhs));
}
void MacroAssembler::extMulHighInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smull2(Simd4S(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::unsignedExtMulLowInt16x8(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Umull(Simd4S(dest), Simd4H(lhs), Simd4H(rhs));
}
void MacroAssembler::unsignedExtMulHighInt16x8(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Umull2(Simd4S(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::extMulLowInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smull(Simd2D(dest), Simd2S(lhs), Simd2S(rhs));
}
void MacroAssembler::extMulHighInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smull2(Simd2D(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::unsignedExtMulLowInt32x4(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Umull(Simd2D(dest), Simd2S(lhs), Simd2S(rhs));
}
void MacroAssembler::unsignedExtMulHighInt32x4(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Umull2(Simd2D(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::q15MulrSatInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sqrdmulh(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::q15MulrInt16x8Relaxed(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sqrdmulh(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
// Integer Negate
void MacroAssembler::negInt8x16(FloatRegister src, FloatRegister dest) {
Neg(Simd16B(dest), Simd16B(src));
}
void MacroAssembler::negInt16x8(FloatRegister src, FloatRegister dest) {
Neg(Simd8H(dest), Simd8H(src));
}
void MacroAssembler::negInt32x4(FloatRegister src, FloatRegister dest) {
Neg(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::negInt64x2(FloatRegister src, FloatRegister dest) {
Neg(Simd2D(dest), Simd2D(src));
}
// Saturating integer add
void MacroAssembler::addSatInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sqadd(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::unsignedAddSatInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Uqadd(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::addSatInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sqadd(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::unsignedAddSatInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Uqadd(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
// Saturating integer subtract
void MacroAssembler::subSatInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sqsub(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::unsignedSubSatInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Uqsub(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::subSatInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Sqsub(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::unsignedSubSatInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Uqsub(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
// Lane-wise integer minimum
void MacroAssembler::minInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smin(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::unsignedMinInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Umin(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::minInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smin(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::unsignedMinInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Umin(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::minInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smin(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::unsignedMinInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Umin(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
// Lane-wise integer maximum
void MacroAssembler::maxInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smax(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::unsignedMaxInt8x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Umax(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::maxInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smax(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::unsignedMaxInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Umax(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::maxInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Smax(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::unsignedMaxInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Umax(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
// Lane-wise integer rounding average
void MacroAssembler::unsignedAverageInt8x16(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Urhadd(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::unsignedAverageInt16x8(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest) {
Urhadd(Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
// Lane-wise integer absolute value
void MacroAssembler::absInt8x16(FloatRegister src, FloatRegister dest) {
Abs(Simd16B(dest), Simd16B(src));
}
void MacroAssembler::absInt16x8(FloatRegister src, FloatRegister dest) {
Abs(Simd8H(dest), Simd8H(src));
}
void MacroAssembler::absInt32x4(FloatRegister src, FloatRegister dest) {
Abs(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::absInt64x2(FloatRegister src, FloatRegister dest) {
Abs(Simd2D(dest), Simd2D(src));
}
// Left shift by variable scalar
void MacroAssembler::leftShiftInt8x16(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
ScratchSimd128Scope vscratch(*
this);
Dup(Simd16B(vscratch), ARMRegister(rhs, 32));
Sshl(Simd16B(dest), Simd16B(lhs), Simd16B(vscratch));
}
void MacroAssembler::leftShiftInt8x16(Imm32 count, FloatRegister src,
FloatRegister dest) {
Shl(Simd16B(dest), Simd16B(src), count.value);
}
void MacroAssembler::leftShiftInt16x8(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
ScratchSimd128Scope vscratch(*
this);
Dup(Simd8H(vscratch), ARMRegister(rhs, 32));
Sshl(Simd8H(dest), Simd8H(lhs), Simd8H(vscratch));
}
void MacroAssembler::leftShiftInt16x8(Imm32 count, FloatRegister src,
FloatRegister dest) {
Shl(Simd8H(dest), Simd8H(src), count.value);
}
void MacroAssembler::leftShiftInt32x4(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
ScratchSimd128Scope vscratch(*
this);
Dup(Simd4S(vscratch), ARMRegister(rhs, 32));
Sshl(Simd4S(dest), Simd4S(lhs), Simd4S(vscratch));
}
void MacroAssembler::leftShiftInt32x4(Imm32 count, FloatRegister src,
FloatRegister dest) {
Shl(Simd4S(dest), Simd4S(src), count.value);
}
void MacroAssembler::leftShiftInt64x2(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
ScratchSimd128Scope vscratch(*
this);
Dup(Simd2D(vscratch), ARMRegister(rhs, 64));
Sshl(Simd2D(dest), Simd2D(lhs), Simd2D(vscratch));
}
void MacroAssembler::leftShiftInt64x2(Imm32 count, FloatRegister src,
FloatRegister dest) {
Shl(Simd2D(dest), Simd2D(src), count.value);
}
// Right shift by variable scalar
void MacroAssembler::rightShiftInt8x16(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt8x16(lhs, rhs, dest,
/* isUnsigned */ false);
}
void MacroAssembler::rightShiftInt8x16(Imm32 count, FloatRegister src,
FloatRegister dest) {
Sshr(Simd16B(dest), Simd16B(src), count.value);
}
void MacroAssembler::unsignedRightShiftInt8x16(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt8x16(lhs, rhs, dest,
/* isUnsigned */ true);
}
void MacroAssembler::unsignedRightShiftInt8x16(Imm32 count, FloatRegister src,
FloatRegister dest) {
Ushr(Simd16B(dest), Simd16B(src), count.value);
}
void MacroAssembler::rightShiftInt16x8(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt16x8(lhs, rhs, dest,
/* isUnsigned */ false);
}
void MacroAssembler::rightShiftInt16x8(Imm32 count, FloatRegister src,
FloatRegister dest) {
Sshr(Simd8H(dest), Simd8H(src), count.value);
}
void MacroAssembler::unsignedRightShiftInt16x8(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt16x8(lhs, rhs, dest,
/* isUnsigned */ true);
}
void MacroAssembler::unsignedRightShiftInt16x8(Imm32 count, FloatRegister src,
FloatRegister dest) {
Ushr(Simd8H(dest), Simd8H(src), count.value);
}
void MacroAssembler::rightShiftInt32x4(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt32x4(lhs, rhs, dest,
/* isUnsigned */ false);
}
void MacroAssembler::rightShiftInt32x4(Imm32 count, FloatRegister src,
FloatRegister dest) {
Sshr(Simd4S(dest), Simd4S(src), count.value);
}
void MacroAssembler::unsignedRightShiftInt32x4(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt32x4(lhs, rhs, dest,
/* isUnsigned */ true);
}
void MacroAssembler::unsignedRightShiftInt32x4(Imm32 count, FloatRegister src,
FloatRegister dest) {
Ushr(Simd4S(dest), Simd4S(src), count.value);
}
void MacroAssembler::rightShiftInt64x2(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt64x2(lhs, rhs, dest,
/* isUnsigned */ false);
}
void MacroAssembler::rightShiftInt64x2(Imm32 count, FloatRegister src,
FloatRegister dest) {
Sshr(Simd2D(dest), Simd2D(src), count.value);
}
void MacroAssembler::unsignedRightShiftInt64x2(FloatRegister lhs,
Register rhs,
FloatRegister dest) {
MacroAssemblerCompat::rightShiftInt64x2(lhs, rhs, dest,
/* isUnsigned */ true);
}
void MacroAssembler::unsignedRightShiftInt64x2(Imm32 count, FloatRegister src,
FloatRegister dest) {
Ushr(Simd2D(dest), Simd2D(src), count.value);
}
// Bitwise and, or, xor, not
void MacroAssembler::bitwiseAndSimd128(FloatRegister rhs,
FloatRegister lhsDest) {
And(Simd16B(lhsDest), Simd16B(lhsDest), Simd16B(rhs));
}
void MacroAssembler::bitwiseAndSimd128(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
And(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::bitwiseOrSimd128(FloatRegister rhs,
FloatRegister lhsDest) {
Orr(Simd16B(lhsDest), Simd16B(lhsDest), Simd16B(rhs));
}
void MacroAssembler::bitwiseOrSimd128(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Orr(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::bitwiseXorSimd128(FloatRegister rhs,
FloatRegister lhsDest) {
Eor(Simd16B(lhsDest), Simd16B(lhsDest), Simd16B(rhs));
}
void MacroAssembler::bitwiseXorSimd128(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Eor(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::bitwiseNotSimd128(FloatRegister src, FloatRegister dest) {
Not(Simd16B(dest), Simd16B(src));
}
void MacroAssembler::bitwiseAndNotSimd128(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Bic(Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
// Bitwise AND with complement: dest = ~lhs & rhs, note this is not what Wasm
// wants but what the x86 hardware offers. Hence the name. Since arm64 has
// dest = lhs & ~rhs we just swap operands.
void MacroAssembler::bitwiseNotAndSimd128(FloatRegister rhs,
FloatRegister lhsDest) {
Bic(Simd16B(lhsDest), Simd16B(rhs), Simd16B(lhsDest));
}
// Bitwise select
void MacroAssembler::bitwiseSelectSimd128(FloatRegister onTrue,
FloatRegister onFalse,
FloatRegister maskDest) {
Bsl(Simd16B(maskDest), Simd16B(onTrue), Simd16B(onFalse));
}
// Population count
void MacroAssembler::popcntInt8x16(FloatRegister src, FloatRegister dest) {
Cnt(Simd16B(dest), Simd16B(src));
}
// Any lane true, ie, any bit set
void MacroAssembler::anyTrueSimd128(FloatRegister src,
Register dest_) {
ScratchSimd128Scope scratch_(*
this);
ARMFPRegister scratch(Simd1D(scratch_));
ARMRegister dest(dest_, 64);
Addp(scratch, Simd2D(src));
Umov(dest, scratch, 0);
Cmp(dest, Operand(0));
Cset(dest, Assembler::NonZero);
}
// All lanes true
void MacroAssembler::allTrueInt8x16(FloatRegister src,
Register dest_) {
ScratchSimd128Scope scratch(*
this);
ARMRegister dest(dest_, 64);
Cmeq(Simd16B(scratch), Simd16B(src), 0);
Addp(Simd1D(scratch), Simd2D(scratch));
Umov(dest, Simd1D(scratch), 0);
Cmp(dest, Operand(0));
Cset(dest, Assembler::Zero);
}
void MacroAssembler::allTrueInt16x8(FloatRegister src,
Register dest_) {
ScratchSimd128Scope scratch(*
this);
ARMRegister dest(dest_, 64);
Cmeq(Simd8H(scratch), Simd8H(src), 0);
Addp(Simd1D(scratch), Simd2D(scratch));
Umov(dest, Simd1D(scratch), 0);
Cmp(dest, Operand(0));
Cset(dest, Assembler::Zero);
}
void MacroAssembler::allTrueInt32x4(FloatRegister src,
Register dest_) {
ScratchSimd128Scope scratch(*
this);
ARMRegister dest(dest_, 64);
Cmeq(Simd4S(scratch), Simd4S(src), 0);
Addp(Simd1D(scratch), Simd2D(scratch));
Umov(dest, Simd1D(scratch), 0);
Cmp(dest, Operand(0));
Cset(dest, Assembler::Zero);
}
void MacroAssembler::allTrueInt64x2(FloatRegister src,
Register dest_) {
ScratchSimd128Scope scratch(*
this);
ARMRegister dest(dest_, 64);
Cmeq(Simd2D(scratch), Simd2D(src), 0);
Addp(Simd1D(scratch), Simd2D(scratch));
Umov(dest, Simd1D(scratch), 0);
Cmp(dest, Operand(0));
Cset(dest, Assembler::Zero);
}
// Bitmask, ie extract and compress high bits of all lanes
//
// There's no direct support for this on the chip. These implementations come
// from the writeup that added the instruction to the SIMD instruction set.
// Generally, shifting and masking is used to isolate the sign bit of each
// element in the right position, then a horizontal add creates the result. For
// 8-bit elements an intermediate step is needed to assemble the bits of the
// upper and lower 8 bytes into 8 halfwords.
void MacroAssembler::bitmaskInt8x16(FloatRegister src,
Register dest,
FloatRegister temp) {
ScratchSimd128Scope scratch(*
this);
int8_t values[] = {1, 2, 4, 8, 16, 32, 64, -128,
1, 2, 4, 8, 16, 32, 64, -128};
loadConstantSimd128(SimdConstant::CreateX16(values), temp);
Sshr(Simd16B(scratch), Simd16B(src), 7);
And(Simd16B(scratch), Simd16B(scratch), Simd16B(temp));
Ext(Simd16B(temp), Simd16B(scratch), Simd16B(scratch), 8);
Zip1(Simd16B(temp), Simd16B(scratch), Simd16B(temp));
Addv(ARMFPRegister(temp, 16), Simd8H(temp));
Mov(ARMRegister(dest, 32), Simd8H(temp), 0);
}
void MacroAssembler::bitmaskInt16x8(FloatRegister src,
Register dest,
FloatRegister temp) {
ScratchSimd128Scope scratch(*
this);
int16_t values[] = {1, 2, 4, 8, 16, 32, 64, 128};
loadConstantSimd128(SimdConstant::CreateX8(values), temp);
Sshr(Simd8H(scratch), Simd8H(src), 15);
And(Simd16B(scratch), Simd16B(scratch), Simd16B(temp));
Addv(ARMFPRegister(scratch, 16), Simd8H(scratch));
Mov(ARMRegister(dest, 32), Simd8H(scratch), 0);
}
void MacroAssembler::bitmaskInt32x4(FloatRegister src,
Register dest,
FloatRegister temp) {
ScratchSimd128Scope scratch(*
this);
int32_t values[] = {1, 2, 4, 8};
loadConstantSimd128(SimdConstant::CreateX4(values), temp);
Sshr(Simd4S(scratch), Simd4S(src), 31);
And(Simd16B(scratch), Simd16B(scratch), Simd16B(temp));
Addv(ARMFPRegister(scratch, 32), Simd4S(scratch));
Mov(ARMRegister(dest, 32), Simd4S(scratch), 0);
}
void MacroAssembler::bitmaskInt64x2(FloatRegister src,
Register dest,
FloatRegister temp) {
Sqxtn(Simd2S(temp), Simd2D(src));
Ushr(Simd2S(temp), Simd2S(temp), 31);
Usra(ARMFPRegister(temp, 64), ARMFPRegister(temp, 64), 31);
Fmov(ARMRegister(dest, 32), ARMFPRegister(temp, 32));
}
// Comparisons (integer and floating-point)
void MacroAssembler::compareInt8x16(Assembler::Condition cond,
FloatRegister rhs, FloatRegister lhsDest) {
compareSimd128Int(cond, Simd16B(lhsDest), Simd16B(lhsDest), Simd16B(rhs));
}
void MacroAssembler::compareInt8x16(Assembler::Condition cond,
FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
compareSimd128Int(cond, Simd16B(dest), Simd16B(lhs), Simd16B(rhs));
}
void MacroAssembler::compareInt16x8(Assembler::Condition cond,
FloatRegister rhs, FloatRegister lhsDest) {
compareSimd128Int(cond, Simd8H(lhsDest), Simd8H(lhsDest), Simd8H(rhs));
}
void MacroAssembler::compareInt16x8(Assembler::Condition cond,
FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
compareSimd128Int(cond, Simd8H(dest), Simd8H(lhs), Simd8H(rhs));
}
void MacroAssembler::compareInt32x4(Assembler::Condition cond,
FloatRegister rhs, FloatRegister lhsDest) {
compareSimd128Int(cond, Simd4S(lhsDest), Simd4S(lhsDest), Simd4S(rhs));
}
void MacroAssembler::compareInt32x4(Assembler::Condition cond,
FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
compareSimd128Int(cond, Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::compareInt64x2(Assembler::Condition cond,
FloatRegister rhs, FloatRegister lhsDest) {
compareSimd128Int(cond, Simd2D(lhsDest), Simd2D(lhsDest), Simd2D(rhs));
}
void MacroAssembler::compareInt64x2(Assembler::Condition cond,
FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
compareSimd128Int(cond, Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
void MacroAssembler::compareFloat32x4(Assembler::Condition cond,
FloatRegister rhs,
FloatRegister lhsDest) {
compareSimd128Float(cond, Simd4S(lhsDest), Simd4S(lhsDest), Simd4S(rhs));
}
void MacroAssembler::compareFloat32x4(Assembler::Condition cond,
FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
compareSimd128Float(cond, Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::compareFloat64x2(Assembler::Condition cond,
FloatRegister rhs,
FloatRegister lhsDest) {
compareSimd128Float(cond, Simd2D(lhsDest), Simd2D(lhsDest), Simd2D(rhs));
}
void MacroAssembler::compareFloat64x2(Assembler::Condition cond,
FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
compareSimd128Float(cond, Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// Load
FaultingCodeOffset MacroAssembler::loadUnalignedSimd128(
const Address& src,
FloatRegister dest) {
return Ldr(ARMFPRegister(dest, 128), toMemOperand(src));
}
FaultingCodeOffset MacroAssembler::loadUnalignedSimd128(
const BaseIndex& address, FloatRegister dest) {
return doBaseIndex(ARMFPRegister(dest, 128), address, vixl::LDR_q);
}
// Store
FaultingCodeOffset MacroAssembler::storeUnalignedSimd128(FloatRegister src,
const Address& dest) {
return Str(ARMFPRegister(src, 128), toMemOperand(dest));
}
FaultingCodeOffset MacroAssembler::storeUnalignedSimd128(
FloatRegister src,
const BaseIndex& dest) {
return doBaseIndex(ARMFPRegister(src, 128), dest, vixl::STR_q);
}
// Floating point negation
void MacroAssembler::negFloat32x4(FloatRegister src, FloatRegister dest) {
Fneg(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::negFloat64x2(FloatRegister src, FloatRegister dest) {
Fneg(Simd2D(dest), Simd2D(src));
}
// Floating point absolute value
void MacroAssembler::absFloat32x4(FloatRegister src, FloatRegister dest) {
Fabs(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::absFloat64x2(FloatRegister src, FloatRegister dest) {
Fabs(Simd2D(dest), Simd2D(src));
}
// NaN-propagating minimum
void MacroAssembler::minFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmin(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::minFloat32x4(FloatRegister rhs, FloatRegister lhsDest) {
Fmin(Simd4S(lhsDest), Simd4S(lhsDest), Simd4S(rhs));
}
void MacroAssembler::minFloat64x2(FloatRegister rhs, FloatRegister lhsDest) {
Fmin(Simd2D(lhsDest), Simd2D(lhsDest), Simd2D(rhs));
}
void MacroAssembler::minFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmin(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// NaN-propagating maximum
void MacroAssembler::maxFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmax(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::maxFloat32x4(FloatRegister rhs, FloatRegister lhsDest) {
Fmax(Simd4S(lhsDest), Simd4S(lhsDest), Simd4S(rhs));
}
void MacroAssembler::maxFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmax(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
void MacroAssembler::maxFloat64x2(FloatRegister rhs, FloatRegister lhsDest) {
Fmax(Simd2D(lhsDest), Simd2D(lhsDest), Simd2D(rhs));
}
// Floating add
void MacroAssembler::addFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fadd(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::addFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fadd(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// Floating subtract
void MacroAssembler::subFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fsub(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::subFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fsub(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// Floating division
void MacroAssembler::divFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fdiv(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::divFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fdiv(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// Floating Multiply
void MacroAssembler::mulFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmul(Simd4S(dest), Simd4S(lhs), Simd4S(rhs));
}
void MacroAssembler::mulFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmul(Simd2D(dest), Simd2D(lhs), Simd2D(rhs));
}
// Pairwise add
void MacroAssembler::extAddPairwiseInt8x16(FloatRegister src,
FloatRegister dest) {
Saddlp(Simd8H(dest), Simd16B(src));
}
void MacroAssembler::unsignedExtAddPairwiseInt8x16(FloatRegister src,
FloatRegister dest) {
Uaddlp(Simd8H(dest), Simd16B(src));
}
void MacroAssembler::extAddPairwiseInt16x8(FloatRegister src,
FloatRegister dest) {
Saddlp(Simd4S(dest), Simd8H(src));
}
void MacroAssembler::unsignedExtAddPairwiseInt16x8(FloatRegister src,
FloatRegister dest) {
Uaddlp(Simd4S(dest), Simd8H(src));
}
// Floating square root
void MacroAssembler::sqrtFloat32x4(FloatRegister src, FloatRegister dest) {
Fsqrt(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::sqrtFloat64x2(FloatRegister src, FloatRegister dest) {
Fsqrt(Simd2D(dest), Simd2D(src));
}
// Integer to floating point with rounding
void MacroAssembler::convertInt32x4ToFloat32x4(FloatRegister src,
FloatRegister dest) {
Scvtf(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::unsignedConvertInt32x4ToFloat32x4(FloatRegister src,
FloatRegister dest) {
Ucvtf(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::convertInt32x4ToFloat64x2(FloatRegister src,
FloatRegister dest) {
Sshll(Simd2D(dest), Simd2S(src), 0);
Scvtf(Simd2D(dest), Simd2D(dest));
}
void MacroAssembler::unsignedConvertInt32x4ToFloat64x2(FloatRegister src,
FloatRegister dest) {
Ushll(Simd2D(dest), Simd2S(src), 0);
Ucvtf(Simd2D(dest), Simd2D(dest));
}
// Floating point to integer with saturation
void MacroAssembler::truncSatFloat32x4ToInt32x4(FloatRegister src,
FloatRegister dest) {
Fcvtzs(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::unsignedTruncSatFloat32x4ToInt32x4(FloatRegister src,
FloatRegister dest) {
Fcvtzu(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::truncSatFloat64x2ToInt32x4(FloatRegister src,
FloatRegister dest,
FloatRegister temp) {
Fcvtzs(Simd2D(dest), Simd2D(src));
Sqxtn(Simd2S(dest), Simd2D(dest));
}
void MacroAssembler::unsignedTruncSatFloat64x2ToInt32x4(FloatRegister src,
FloatRegister dest,
FloatRegister temp) {
Fcvtzu(Simd2D(dest), Simd2D(src));
Uqxtn(Simd2S(dest), Simd2D(dest));
}
void MacroAssembler::truncFloat32x4ToInt32x4Relaxed(FloatRegister src,
FloatRegister dest) {
Fcvtzs(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::unsignedTruncFloat32x4ToInt32x4Relaxed(
FloatRegister src, FloatRegister dest) {
Fcvtzu(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::truncFloat64x2ToInt32x4Relaxed(FloatRegister src,
FloatRegister dest) {
Fcvtzs(Simd2D(dest), Simd2D(src));
Sqxtn(Simd2S(dest), Simd2D(dest));
}
void MacroAssembler::unsignedTruncFloat64x2ToInt32x4Relaxed(
FloatRegister src, FloatRegister dest) {
Fcvtzu(Simd2D(dest), Simd2D(src));
Uqxtn(Simd2S(dest), Simd2D(dest));
}
// Floating point narrowing
void MacroAssembler::convertFloat64x2ToFloat32x4(FloatRegister src,
FloatRegister dest) {
Fcvtn(Simd2S(dest), Simd2D(src));
}
// Floating point widening
void MacroAssembler::convertFloat32x4ToFloat64x2(FloatRegister src,
FloatRegister dest) {
Fcvtl(Simd2D(dest), Simd2S(src));
}
// Integer to integer narrowing
void MacroAssembler::narrowInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
if (rhs == dest) {
Mov(scratch, SimdReg(rhs));
rhs = scratch;
}
Sqxtn(Simd8B(dest), Simd8H(lhs));
Sqxtn2(Simd16B(dest), Simd8H(rhs));
}
void MacroAssembler::unsignedNarrowInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
if (rhs == dest) {
Mov(scratch, SimdReg(rhs));
rhs = scratch;
}
Sqxtun(Simd8B(dest), Simd8H(lhs));
Sqxtun2(Simd16B(dest), Simd8H(rhs));
}
void MacroAssembler::narrowInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
if (rhs == dest) {
Mov(scratch, SimdReg(rhs));
rhs = scratch;
}
Sqxtn(Simd4H(dest), Simd4S(lhs));
Sqxtn2(Simd8H(dest), Simd4S(rhs));
}
void MacroAssembler::unsignedNarrowInt32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
if (rhs == dest) {
Mov(scratch, SimdReg(rhs));
rhs = scratch;
}
Sqxtun(Simd4H(dest), Simd4S(lhs));
Sqxtun2(Simd8H(dest), Simd4S(rhs));
}
// Integer to integer widening
void MacroAssembler::widenLowInt8x16(FloatRegister src, FloatRegister dest) {
Sshll(Simd8H(dest), Simd8B(src), 0);
}
void MacroAssembler::widenHighInt8x16(FloatRegister src, FloatRegister dest) {
Sshll2(Simd8H(dest), Simd16B(src), 0);
}
void MacroAssembler::unsignedWidenLowInt8x16(FloatRegister src,
FloatRegister dest) {
Ushll(Simd8H(dest), Simd8B(src), 0);
}
void MacroAssembler::unsignedWidenHighInt8x16(FloatRegister src,
FloatRegister dest) {
Ushll2(Simd8H(dest), Simd16B(src), 0);
}
void MacroAssembler::widenLowInt16x8(FloatRegister src, FloatRegister dest) {
Sshll(Simd4S(dest), Simd4H(src), 0);
}
void MacroAssembler::widenHighInt16x8(FloatRegister src, FloatRegister dest) {
Sshll2(Simd4S(dest), Simd8H(src), 0);
}
void MacroAssembler::unsignedWidenLowInt16x8(FloatRegister src,
FloatRegister dest) {
Ushll(Simd4S(dest), Simd4H(src), 0);
}
void MacroAssembler::unsignedWidenHighInt16x8(FloatRegister src,
FloatRegister dest) {
Ushll2(Simd4S(dest), Simd8H(src), 0);
}
void MacroAssembler::widenLowInt32x4(FloatRegister src, FloatRegister dest) {
Sshll(Simd2D(dest), Simd2S(src), 0);
}
void MacroAssembler::unsignedWidenLowInt32x4(FloatRegister src,
FloatRegister dest) {
Ushll(Simd2D(dest), Simd2S(src), 0);
}
void MacroAssembler::widenHighInt32x4(FloatRegister src, FloatRegister dest) {
Sshll2(Simd2D(dest), Simd4S(src), 0);
}
void MacroAssembler::unsignedWidenHighInt32x4(FloatRegister src,
FloatRegister dest) {
Ushll2(Simd2D(dest), Simd4S(src), 0);
}
// Compare-based minimum/maximum (experimental as of August, 2020)
// https://github.com/WebAssembly/simd/pull/122
void MacroAssembler::pseudoMinFloat32x4(FloatRegister rhsOrRhsDest,
FloatRegister lhsOrLhsDest) {
// Shut up the linter by using the same names as in the declaration, then
// aliasing here.
FloatRegister rhs = rhsOrRhsDest;
FloatRegister lhsDest = lhsOrLhsDest;
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd4S(scratch), Simd4S(lhsDest), Simd4S(rhs));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhsDest));
Mov(SimdReg(lhsDest), scratch);
}
void MacroAssembler::pseudoMinFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd4S(scratch), Simd4S(lhs), Simd4S(rhs));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhs));
Mov(SimdReg(dest), scratch);
}
void MacroAssembler::pseudoMinFloat64x2(FloatRegister rhsOrRhsDest,
FloatRegister lhsOrLhsDest) {
FloatRegister rhs = rhsOrRhsDest;
FloatRegister lhsDest = lhsOrLhsDest;
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd2D(scratch), Simd2D(lhsDest), Simd2D(rhs));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhsDest));
Mov(SimdReg(lhsDest), scratch);
}
void MacroAssembler::pseudoMinFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd2D(scratch), Simd2D(lhs), Simd2D(rhs));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhs));
Mov(SimdReg(dest), scratch);
}
void MacroAssembler::pseudoMaxFloat32x4(FloatRegister rhsOrRhsDest,
FloatRegister lhsOrLhsDest) {
FloatRegister rhs = rhsOrRhsDest;
FloatRegister lhsDest = lhsOrLhsDest;
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd4S(scratch), Simd4S(rhs), Simd4S(lhsDest));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhsDest));
Mov(SimdReg(lhsDest), scratch);
}
void MacroAssembler::pseudoMaxFloat32x4(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd4S(scratch), Simd4S(rhs), Simd4S(lhs));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhs));
Mov(SimdReg(dest), scratch);
}
void MacroAssembler::pseudoMaxFloat64x2(FloatRegister rhsOrRhsDest,
FloatRegister lhsOrLhsDest) {
FloatRegister rhs = rhsOrRhsDest;
FloatRegister lhsDest = lhsOrLhsDest;
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd2D(scratch), Simd2D(rhs), Simd2D(lhsDest));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhsDest));
Mov(SimdReg(lhsDest), scratch);
}
void MacroAssembler::pseudoMaxFloat64x2(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
Fcmgt(Simd2D(scratch), Simd2D(rhs), Simd2D(lhs));
Bsl(Simd16B(scratch), Simd16B(rhs), Simd16B(lhs));
Mov(SimdReg(dest), scratch);
}
// Widening/pairwise integer dot product (experimental as of August, 2020)
// https://github.com/WebAssembly/simd/pull/127
void MacroAssembler::widenDotInt16x8(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
Smull(Simd4S(scratch), Simd4H(lhs), Simd4H(rhs));
Smull2(Simd4S(dest), Simd8H(lhs), Simd8H(rhs));
Addp(Simd4S(dest), Simd4S(scratch), Simd4S(dest));
}
void MacroAssembler::dotInt8x16Int7x16(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
ScratchSimd128Scope scratch(*
this);
Smull(Simd8H(scratch), Simd8B(lhs), Simd8B(rhs));
Smull2(Simd8H(dest), Simd16B(lhs), Simd16B(rhs));
Addp(Simd8H(dest), Simd8H(scratch), Simd8H(dest));
}
void MacroAssembler::dotInt8x16Int7x16ThenAdd(FloatRegister lhs,
FloatRegister rhs,
FloatRegister dest,
FloatRegister temp) {
ScratchSimd128Scope scratch(*
this);
Smull(Simd8H(scratch), Simd8B(lhs), Simd8B(rhs));
Smull2(Simd8H(temp), Simd16B(lhs), Simd16B(rhs));
Addp(Simd8H(temp), Simd8H(scratch), Simd8H(temp));
Sadalp(Simd4S(dest), Simd8H(temp));
}
// Floating point rounding (experimental as of August, 2020)
// https://github.com/WebAssembly/simd/pull/232
void MacroAssembler::ceilFloat32x4(FloatRegister src, FloatRegister dest) {
Frintp(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::ceilFloat64x2(FloatRegister src, FloatRegister dest) {
Frintp(Simd2D(dest), Simd2D(src));
}
void MacroAssembler::floorFloat32x4(FloatRegister src, FloatRegister dest) {
Frintm(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::floorFloat64x2(FloatRegister src, FloatRegister dest) {
Frintm(Simd2D(dest), Simd2D(src));
}
void MacroAssembler::truncFloat32x4(FloatRegister src, FloatRegister dest) {
Frintz(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::truncFloat64x2(FloatRegister src, FloatRegister dest) {
Frintz(Simd2D(dest), Simd2D(src));
}
void MacroAssembler::nearestFloat32x4(FloatRegister src, FloatRegister dest) {
Frintn(Simd4S(dest), Simd4S(src));
}
void MacroAssembler::nearestFloat64x2(FloatRegister src, FloatRegister dest) {
Frintn(Simd2D(dest), Simd2D(src));
}
// Floating multiply-accumulate: srcDest [+-]= src1 * src2
void MacroAssembler::fmaFloat32x4(FloatRegister src1, FloatRegister src2,
FloatRegister srcDest) {
Fmla(Simd4S(srcDest), Simd4S(src1), Simd4S(src2));
}
void MacroAssembler::fnmaFloat32x4(FloatRegister src1, FloatRegister src2,
FloatRegister srcDest) {
Fmls(Simd4S(srcDest), Simd4S(src1), Simd4S(src2));
}
void MacroAssembler::fmaFloat64x2(FloatRegister src1, FloatRegister src2,
FloatRegister srcDest) {
Fmla(Simd2D(srcDest), Simd2D(src1), Simd2D(src2));
}
void MacroAssembler::fnmaFloat64x2(FloatRegister src1, FloatRegister src2,
FloatRegister srcDest) {
Fmls(Simd2D(srcDest), Simd2D(src1), Simd2D(src2));
}
void MacroAssembler::minFloat32x4Relaxed(FloatRegister src,
FloatRegister srcDest) {
Fmin(Simd4S(srcDest), Simd4S(src), Simd4S(srcDest));
}
void MacroAssembler::minFloat32x4Relaxed(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmin(Simd4S(dest), Simd4S(rhs), Simd4S(lhs));
}
void MacroAssembler::maxFloat32x4Relaxed(FloatRegister src,
FloatRegister srcDest) {
Fmax(Simd4S(srcDest), Simd4S(src), Simd4S(srcDest));
}
void MacroAssembler::maxFloat32x4Relaxed(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmax(Simd4S(dest), Simd4S(rhs), Simd4S(lhs));
}
void MacroAssembler::minFloat64x2Relaxed(FloatRegister src,
FloatRegister srcDest) {
Fmin(Simd2D(srcDest), Simd2D(src), Simd2D(srcDest));
}
void MacroAssembler::minFloat64x2Relaxed(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmin(Simd2D(dest), Simd2D(rhs), Simd2D(lhs));
}
void MacroAssembler::maxFloat64x2Relaxed(FloatRegister src,
FloatRegister srcDest) {
Fmax(Simd2D(srcDest), Simd2D(src), Simd2D(srcDest));
}
void MacroAssembler::maxFloat64x2Relaxed(FloatRegister lhs, FloatRegister rhs,
FloatRegister dest) {
Fmax(Simd2D(dest), Simd2D(rhs), Simd2D(lhs));
}
//}}} check_macroassembler_style
// ===============================================================
void MacroAssemblerCompat::addToStackPtr(
Register src) {
Add(GetStackPointer64(), GetStackPointer64(), ARMRegister(src, 64));
// Given that required invariant SP <= PSP, this is probably pointless,
// since it gives PSP a larger value.
syncStackPtr();
}
void MacroAssemblerCompat::addToStackPtr(Imm32 imm) {
Add(GetStackPointer64(), GetStackPointer64(), Operand(imm.value));
// As above, probably pointless.
syncStackPtr();
}
void MacroAssemblerCompat::addToStackPtr(
const Address& src) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
Ldr(scratch, toMemOperand(src));
Add(GetStackPointer64(), GetStackPointer64(), scratch);
// As above, probably pointless.
syncStackPtr();
}
void MacroAssemblerCompat::addStackPtrTo(
Register dest) {
Add(ARMRegister(dest, 64), ARMRegister(dest, 64), GetStackPointer64());
}
void MacroAssemblerCompat::subFromStackPtr(
Register src) {
Sub(GetStackPointer64(), GetStackPointer64(), ARMRegister(src, 64));
syncStackPtr();
}
void MacroAssemblerCompat::subFromStackPtr(Imm32 imm) {
Sub(GetStackPointer64(), GetStackPointer64(), Operand(imm.value));
syncStackPtr();
}
void MacroAssemblerCompat::subStackPtrFrom(
Register dest) {
Sub(ARMRegister(dest, 64), ARMRegister(dest, 64), GetStackPointer64());
}
void MacroAssemblerCompat::andToStackPtr(Imm32 imm) {
if (sp.Is(GetStackPointer64())) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
Mov(scratch, sp);
And(sp, scratch, Operand(imm.value));
// syncStackPtr() not needed since our SP is the real SP.
}
else {
And(GetStackPointer64(), GetStackPointer64(), Operand(imm.value));
syncStackPtr();
}
}
void MacroAssemblerCompat::moveToStackPtr(
Register src) {
Mov(GetStackPointer64(), ARMRegister(src, 64));
syncStackPtr();
}
void MacroAssemblerCompat::moveStackPtrTo(
Register dest) {
Mov(ARMRegister(dest, 64), GetStackPointer64());
}
void MacroAssemblerCompat::loadStackPtr(
const Address& src) {
if (sp.Is(GetStackPointer64())) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
Ldr(scratch, toMemOperand(src));
Mov(sp, scratch);
// syncStackPtr() not needed since our SP is the real SP.
}
else {
Ldr(GetStackPointer64(), toMemOperand(src));
syncStackPtr();
}
}
void MacroAssemblerCompat::storeStackPtr(
const Address& dest) {
if (sp.Is(GetStackPointer64())) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
Mov(scratch, sp);
Str(scratch, toMemOperand(dest));
}
else {
Str(GetStackPointer64(), toMemOperand(dest));
}
}
void MacroAssemblerCompat::branchTestStackPtr(Condition cond, Imm32 rhs,
Label* label) {
if (sp.Is(GetStackPointer64())) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
Mov(scratch, sp);
Tst(scratch, Operand(rhs.value));
}
else {
Tst(GetStackPointer64(), Operand(rhs.value));
}
B(label, cond);
}
void MacroAssemblerCompat::branchStackPtr(Condition cond,
Register rhs_,
Label* label) {
ARMRegister rhs(rhs_, 64);
if (sp.Is(GetStackPointer64())) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
Mov(scratch, sp);
Cmp(scratch, rhs);
}
else {
Cmp(GetStackPointer64(), rhs);
}
B(label, cond);
}
void MacroAssemblerCompat::branchStackPtrRhs(Condition cond, Address lhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
Ldr(scratch, toMemOperand(lhs));
// Cmp disallows SP as the rhs, so flip the operands and invert the
// condition.
Cmp(GetStackPointer64(), scratch);
B(label, Assembler::InvertCondition(cond));
}
void MacroAssemblerCompat::branchStackPtrRhs(Condition cond,
AbsoluteAddress lhs,
Label* label) {
vixl::UseScratchRegisterScope temps(
this);
const ARMRegister scratch = temps.AcquireX();
loadPtr(lhs, scratch.asUnsized());
// Cmp disallows SP as the rhs, so flip the operands and invert the
// condition.
Cmp(GetStackPointer64(), scratch);
B(label, Assembler::InvertCondition(cond));
}
void MacroAssemblerCompat::unboxValue(
const ValueOperand& src, AnyRegister dest,
JSValueType type) {
if (dest.isFloat()) {
Label notInt32, end;
asMasm().branchTestInt32(Assembler::NotEqual, src, ¬Int32);
convertInt32ToDouble(src.valueReg(), dest.fpu());
jump(&end);
bind(¬Int32);
unboxDouble(src, dest.fpu());
bind(&end);
}
else {
unboxNonDouble(src, dest.gpr(), type);
}
}
}
// namespace jit
}
// namespace js
#endif /* jit_arm64_MacroAssembler_arm64_inl_h */
