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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) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, 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_MIPS. 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_MIPS.
6 #if defined(TARGET_ARCH_MIPS) 6 #if defined(TARGET_ARCH_MIPS)
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 // S5: IC Data 23 // S5: IC Data
22 // S4: Arguments descriptor 24 // S4: Arguments descriptor
23 // RA: Return address 25 // RA: Return address
24 // The S5, S4 registers can be destroyed only if there is no slow-path, i.e. 26 // The S5, S4 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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2068 StringEquality(assembler, kOneByteStringCid); 2070 StringEquality(assembler, kOneByteStringCid);
2069 } 2071 }
2070 2072
2071 2073
2072 void Intrinsifier::TwoByteString_equality(Assembler* assembler) { 2074 void Intrinsifier::TwoByteString_equality(Assembler* assembler) {
2073 StringEquality(assembler, kTwoByteStringCid); 2075 StringEquality(assembler, kTwoByteStringCid);
2074 } 2076 }
2075 2077
2076 2078
2077 void Intrinsifier::JSRegExp_ExecuteMatch(Assembler* assembler) { 2079 void Intrinsifier::JSRegExp_ExecuteMatch(Assembler* assembler) {
2080 if (FLAG_interpret_irregexp) return;
2081
2078 static const intptr_t kRegExpParamOffset = 2 * kWordSize; 2082 static const intptr_t kRegExpParamOffset = 2 * kWordSize;
2079 static const intptr_t kStringParamOffset = 1 * kWordSize; 2083 static const intptr_t kStringParamOffset = 1 * kWordSize;
2080 // start_index smi is located at 0. 2084 // start_index smi is located at 0.
2081 2085
2082 // Incoming registers: 2086 // Incoming registers:
2083 // T0: Function. (Will be reloaded with the specialized matcher function.) 2087 // T0: Function. (Will be reloaded with the specialized matcher function.)
2084 // S4: Arguments descriptor. (Will be preserved.) 2088 // S4: Arguments descriptor. (Will be preserved.)
2085 // S5: Unknown. (Must be GC safe on tail call.) 2089 // S5: Unknown. (Must be GC safe on tail call.)
2086 2090
2087 // Load the specialized function pointer into T0. Leverage the fact the 2091 // Load the specialized function pointer into T0. Leverage the fact the
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2142 Isolate* isolate = Isolate::Current(); 2146 Isolate* isolate = Isolate::Current();
2143 __ LoadImmediate(V0, reinterpret_cast<uword>(isolate)); 2147 __ LoadImmediate(V0, reinterpret_cast<uword>(isolate));
2144 // Set return value. 2148 // Set return value.
2145 __ Ret(); 2149 __ Ret();
2146 __ delay_slot()->lw(V0, Address(V0, Isolate::current_tag_offset())); 2150 __ delay_slot()->lw(V0, Address(V0, Isolate::current_tag_offset()));
2147 } 2151 }
2148 2152
2149 } // namespace dart 2153 } // namespace dart
2150 2154
2151 #endif // defined TARGET_ARCH_MIPS 2155 #endif // defined TARGET_ARCH_MIPS
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