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Issue 1201383002: Port irregexp bytecode compiler and interpreter from V8 r24065. (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Created 5 years, 5 months ago
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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM64. 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM64.
6 #if defined(TARGET_ARCH_ARM64) 6 #if defined(TARGET_ARCH_ARM64)
7 7
8 #include "vm/intrinsifier.h" 8 #include "vm/intrinsifier.h"
9 9
10 #include "vm/assembler.h" 10 #include "vm/assembler.h"
11 #include "vm/dart_entry.h" 11 #include "vm/dart_entry.h"
12 #include "vm/flow_graph_compiler.h" 12 #include "vm/flow_graph_compiler.h"
13 #include "vm/object.h" 13 #include "vm/object.h"
14 #include "vm/object_store.h" 14 #include "vm/object_store.h"
15 #include "vm/regexp_assembler.h" 15 #include "vm/regexp_assembler.h"
16 #include "vm/symbols.h" 16 #include "vm/symbols.h"
17 17
18 namespace dart { 18 namespace dart {
19 19
20 DECLARE_FLAG(bool, interpret_irregexp);
21
20 // When entering intrinsics code: 22 // When entering intrinsics code:
21 // R5: IC Data 23 // R5: IC Data
22 // R4: Arguments descriptor 24 // R4: Arguments descriptor
23 // LR: Return address 25 // LR: Return address
24 // The R5, R4 registers can be destroyed only if there is no slow-path, i.e. 26 // The R5, R4 registers can be destroyed only if there is no slow-path, i.e.
25 // if the intrinsified method always executes a return. 27 // if the intrinsified method always executes a return.
26 // The FP register should not be modified, because it is used by the profiler. 28 // The FP register should not be modified, because it is used by the profiler.
27 29
28 #define __ assembler-> 30 #define __ assembler->
29 31
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2060 StringEquality(assembler, kOneByteStringCid); 2062 StringEquality(assembler, kOneByteStringCid);
2061 } 2063 }
2062 2064
2063 2065
2064 void Intrinsifier::TwoByteString_equality(Assembler* assembler) { 2066 void Intrinsifier::TwoByteString_equality(Assembler* assembler) {
2065 StringEquality(assembler, kTwoByteStringCid); 2067 StringEquality(assembler, kTwoByteStringCid);
2066 } 2068 }
2067 2069
2068 2070
2069 void Intrinsifier::JSRegExp_ExecuteMatch(Assembler* assembler) { 2071 void Intrinsifier::JSRegExp_ExecuteMatch(Assembler* assembler) {
2072 if (FLAG_interpret_irregexp) return;
2073
2070 static const intptr_t kRegExpParamOffset = 2 * kWordSize; 2074 static const intptr_t kRegExpParamOffset = 2 * kWordSize;
2071 static const intptr_t kStringParamOffset = 1 * kWordSize; 2075 static const intptr_t kStringParamOffset = 1 * kWordSize;
2072 // start_index smi is located at offset 0. 2076 // start_index smi is located at offset 0.
2073 2077
2074 // Incoming registers: 2078 // Incoming registers:
2075 // R0: Function. (Will be reloaded with the specialized matcher function.) 2079 // R0: Function. (Will be reloaded with the specialized matcher function.)
2076 // R4: Arguments descriptor. (Will be preserved.) 2080 // R4: Arguments descriptor. (Will be preserved.)
2077 // R5: Unknown. (Must be GC safe on tail call.) 2081 // R5: Unknown. (Must be GC safe on tail call.)
2078 2082
2079 // Load the specialized function pointer into R0. Leverage the fact the 2083 // Load the specialized function pointer into R0. Leverage the fact the
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2133 Isolate* isolate = Isolate::Current(); 2137 Isolate* isolate = Isolate::Current();
2134 __ LoadImmediate(R1, reinterpret_cast<uword>(isolate), kNoPP); 2138 __ LoadImmediate(R1, reinterpret_cast<uword>(isolate), kNoPP);
2135 // Set return value to Isolate::current_tag_. 2139 // Set return value to Isolate::current_tag_.
2136 __ ldr(R0, Address(R1, Isolate::current_tag_offset())); 2140 __ ldr(R0, Address(R1, Isolate::current_tag_offset()));
2137 __ ret(); 2141 __ ret();
2138 } 2142 }
2139 2143
2140 } // namespace dart 2144 } // namespace dart
2141 2145
2142 #endif // defined TARGET_ARCH_ARM64 2146 #endif // defined TARGET_ARCH_ARM64
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