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Issue 11759008: Introduce ENABLE_LATIN_1 compile flag (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Fix FilterASCII Created 7 years, 11 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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128 128
129 129
130 bool LCodeGen::GeneratePrologue() { 130 bool LCodeGen::GeneratePrologue() {
131 ASSERT(is_generating()); 131 ASSERT(is_generating());
132 132
133 if (info()->IsOptimizing()) { 133 if (info()->IsOptimizing()) {
134 ProfileEntryHookStub::MaybeCallEntryHook(masm_); 134 ProfileEntryHookStub::MaybeCallEntryHook(masm_);
135 135
136 #ifdef DEBUG 136 #ifdef DEBUG
137 if (strlen(FLAG_stop_at) > 0 && 137 if (strlen(FLAG_stop_at) > 0 &&
138 info_->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { 138 info_->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) {
139 __ int3(); 139 __ int3();
140 } 140 }
141 #endif 141 #endif
142 142
143 // Strict mode functions and builtins need to replace the receiver 143 // Strict mode functions and builtins need to replace the receiver
144 // with undefined when called as functions (without an explicit 144 // with undefined when called as functions (without an explicit
145 // receiver object). ecx is zero for method calls and non-zero for 145 // receiver object). ecx is zero for method calls and non-zero for
146 // function calls. 146 // function calls.
147 if (!info_->is_classic_mode() || info_->is_native()) { 147 if (!info_->is_classic_mode() || info_->is_native()) {
148 Label ok; 148 Label ok;
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2404 Label* is_false, 2404 Label* is_false,
2405 Handle<String>class_name, 2405 Handle<String>class_name,
2406 Register input, 2406 Register input,
2407 Register temp, 2407 Register temp,
2408 Register temp2) { 2408 Register temp2) {
2409 ASSERT(!input.is(temp)); 2409 ASSERT(!input.is(temp));
2410 ASSERT(!input.is(temp2)); 2410 ASSERT(!input.is(temp2));
2411 ASSERT(!temp.is(temp2)); 2411 ASSERT(!temp.is(temp2));
2412 __ JumpIfSmi(input, is_false); 2412 __ JumpIfSmi(input, is_false);
2413 2413
2414 if (class_name->IsEqualTo(CStrVector("Function"))) { 2414 if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Function"))) {
2415 // Assuming the following assertions, we can use the same compares to test 2415 // Assuming the following assertions, we can use the same compares to test
2416 // for both being a function type and being in the object type range. 2416 // for both being a function type and being in the object type range.
2417 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); 2417 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2);
2418 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == 2418 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE ==
2419 FIRST_SPEC_OBJECT_TYPE + 1); 2419 FIRST_SPEC_OBJECT_TYPE + 1);
2420 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == 2420 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE ==
2421 LAST_SPEC_OBJECT_TYPE - 1); 2421 LAST_SPEC_OBJECT_TYPE - 1);
2422 STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); 2422 STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
2423 __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); 2423 __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp);
2424 __ j(below, is_false); 2424 __ j(below, is_false);
2425 __ j(equal, is_true); 2425 __ j(equal, is_true);
2426 __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); 2426 __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE);
2427 __ j(equal, is_true); 2427 __ j(equal, is_true);
2428 } else { 2428 } else {
2429 // Faster code path to avoid two compares: subtract lower bound from the 2429 // Faster code path to avoid two compares: subtract lower bound from the
2430 // actual type and do a signed compare with the width of the type range. 2430 // actual type and do a signed compare with the width of the type range.
2431 __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); 2431 __ mov(temp, FieldOperand(input, HeapObject::kMapOffset));
2432 __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); 2432 __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset));
2433 __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); 2433 __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
2434 __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - 2434 __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE -
2435 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); 2435 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
2436 __ j(above, is_false); 2436 __ j(above, is_false);
2437 } 2437 }
2438 2438
2439 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. 2439 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range.
2440 // Check if the constructor in the map is a function. 2440 // Check if the constructor in the map is a function.
2441 __ mov(temp, FieldOperand(temp, Map::kConstructorOffset)); 2441 __ mov(temp, FieldOperand(temp, Map::kConstructorOffset));
2442 // Objects with a non-function constructor have class 'Object'. 2442 // Objects with a non-function constructor have class 'Object'.
2443 __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2); 2443 __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2);
2444 if (class_name->IsEqualTo(CStrVector("Object"))) { 2444 if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Object"))) {
2445 __ j(not_equal, is_true); 2445 __ j(not_equal, is_true);
2446 } else { 2446 } else {
2447 __ j(not_equal, is_false); 2447 __ j(not_equal, is_false);
2448 } 2448 }
2449 2449
2450 // temp now contains the constructor function. Grab the 2450 // temp now contains the constructor function. Grab the
2451 // instance class name from there. 2451 // instance class name from there.
2452 __ mov(temp, FieldOperand(temp, JSFunction::kSharedFunctionInfoOffset)); 2452 __ mov(temp, FieldOperand(temp, JSFunction::kSharedFunctionInfoOffset));
2453 __ mov(temp, FieldOperand(temp, 2453 __ mov(temp, FieldOperand(temp,
2454 SharedFunctionInfo::kInstanceClassNameOffset)); 2454 SharedFunctionInfo::kInstanceClassNameOffset));
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4425 }; 4425 };
4426 4426
4427 DeferredStringCharFromCode* deferred = 4427 DeferredStringCharFromCode* deferred =
4428 new(zone()) DeferredStringCharFromCode(this, instr); 4428 new(zone()) DeferredStringCharFromCode(this, instr);
4429 4429
4430 ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); 4430 ASSERT(instr->hydrogen()->value()->representation().IsInteger32());
4431 Register char_code = ToRegister(instr->char_code()); 4431 Register char_code = ToRegister(instr->char_code());
4432 Register result = ToRegister(instr->result()); 4432 Register result = ToRegister(instr->result());
4433 ASSERT(!char_code.is(result)); 4433 ASSERT(!char_code.is(result));
4434 4434
4435 __ cmp(char_code, String::kMaxAsciiCharCode); 4435 __ cmp(char_code, String::kMaxOneByteCharCode);
4436 __ j(above, deferred->entry()); 4436 __ j(above, deferred->entry());
4437 __ Set(result, Immediate(factory()->single_character_string_cache())); 4437 __ Set(result, Immediate(factory()->single_character_string_cache()));
4438 __ mov(result, FieldOperand(result, 4438 __ mov(result, FieldOperand(result,
4439 char_code, times_pointer_size, 4439 char_code, times_pointer_size,
4440 FixedArray::kHeaderSize)); 4440 FixedArray::kHeaderSize));
4441 __ cmp(result, factory()->undefined_value()); 4441 __ cmp(result, factory()->undefined_value());
4442 __ j(equal, deferred->entry()); 4442 __ j(equal, deferred->entry());
4443 __ bind(deferred->exit()); 4443 __ bind(deferred->exit());
4444 } 4444 }
4445 4445
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5955 FixedArray::kHeaderSize - kPointerSize)); 5955 FixedArray::kHeaderSize - kPointerSize));
5956 __ bind(&done); 5956 __ bind(&done);
5957 } 5957 }
5958 5958
5959 5959
5960 #undef __ 5960 #undef __
5961 5961
5962 } } // namespace v8::internal 5962 } } // namespace v8::internal
5963 5963
5964 #endif // V8_TARGET_ARCH_IA32 5964 #endif // V8_TARGET_ARCH_IA32
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