blob: 84c4f25c182bef318376436e2b2f9fa07f2f1eb4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* 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 {
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 = 0u;
if ((access_flags & kAccNative) == 0u && 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_
|