/*
* Copyright ( C ) 2023 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
#ifndef ART_RUNTIME_NTERP_HELPERS_INL_H_
#define ART_RUNTIME_NTERP_HELPERS_INL_H_
#include "nterp_helpers.h"
namespace art HIDDEN {
ALWAYS_INLINE inline uint32_t GetNterpFastPathFlags(std::string_view shorty,
uint32_t access_flags,
InstructionSet isa) {
bool all_parameters_are_reference = true ;
bool all_parameters_are_reference_or_int = true ;
for (size_t i = 1 ; i < shorty.length(); ++i) {
if (shorty[i] != 'L' ) {
all_parameters_are_reference = false ;
if (shorty[i] == 'F' || shorty[i] == 'D' || shorty[i] == 'J' ) {
all_parameters_are_reference_or_int = false ;
break ;
}
}
}
// Check for nterp entry fast-path based on shorty.
uint32_t nterp_flags = 0 u;
if ((access_flags & kAccNative) == 0 u && all_parameters_are_reference) {
nterp_flags |= kAccNterpEntryPointFastPathFlag;
}
// Check for nterp invoke fast-path based on shorty.
const bool no_float_return = shorty[0 ] != 'F' && shorty[0 ] != 'D' ;
if (isa != InstructionSet::kRiscv64 && all_parameters_are_reference_or_int && no_float_return) {
nterp_flags |= kAccNterpInvokeFastPathFlag;
} else if (isa == InstructionSet::kRiscv64 && all_parameters_are_reference && no_float_return) {
nterp_flags |= kAccNterpInvokeFastPathFlag;
}
return nterp_flags;
}
} // namespace art
#endif // ART_RUNTIME_NTERP_HELPERS_INL_H_
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