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Side by Side Diff: src/crankshaft/mips64/lithium-codegen-mips64.cc

Issue 1744163002: [stubs] Introduce a proper ToBooleanStub. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix mips Created 4 years, 9 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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/crankshaft/mips64/lithium-codegen-mips64.h" 5 #include "src/crankshaft/mips64/lithium-codegen-mips64.h"
6 6
7 #include "src/code-factory.h" 7 #include "src/code-factory.h"
8 #include "src/code-stubs.h" 8 #include "src/code-stubs.h"
9 #include "src/crankshaft/hydrogen-osr.h" 9 #include "src/crankshaft/hydrogen-osr.h"
10 #include "src/crankshaft/mips64/lithium-gap-resolver-mips64.h" 10 #include "src/crankshaft/mips64/lithium-gap-resolver-mips64.h"
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2076 DCHECK(!info()->IsStub()); 2076 DCHECK(!info()->IsStub());
2077 DoubleRegister dbl_scratch = double_scratch0(); 2077 DoubleRegister dbl_scratch = double_scratch0();
2078 __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset)); 2078 __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset));
2079 // Test the double value. Zero and NaN are false. 2079 // Test the double value. Zero and NaN are false.
2080 EmitBranchF(instr, ogl, dbl_scratch, kDoubleRegZero); 2080 EmitBranchF(instr, ogl, dbl_scratch, kDoubleRegZero);
2081 } else if (type.IsString()) { 2081 } else if (type.IsString()) {
2082 DCHECK(!info()->IsStub()); 2082 DCHECK(!info()->IsStub());
2083 __ ld(at, FieldMemOperand(reg, String::kLengthOffset)); 2083 __ ld(at, FieldMemOperand(reg, String::kLengthOffset));
2084 EmitBranch(instr, ne, at, Operand(zero_reg)); 2084 EmitBranch(instr, ne, at, Operand(zero_reg));
2085 } else { 2085 } else {
2086 ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); 2086 ToBooleanICStub::Types expected =
2087 instr->hydrogen()->expected_input_types();
2087 // Avoid deopts in the case where we've never executed this path before. 2088 // Avoid deopts in the case where we've never executed this path before.
2088 if (expected.IsEmpty()) expected = ToBooleanStub::Types::Generic(); 2089 if (expected.IsEmpty()) expected = ToBooleanICStub::Types::Generic();
2089 2090
2090 if (expected.Contains(ToBooleanStub::UNDEFINED)) { 2091 if (expected.Contains(ToBooleanICStub::UNDEFINED)) {
2091 // undefined -> false. 2092 // undefined -> false.
2092 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); 2093 __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
2093 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at)); 2094 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at));
2094 } 2095 }
2095 if (expected.Contains(ToBooleanStub::BOOLEAN)) { 2096 if (expected.Contains(ToBooleanICStub::BOOLEAN)) {
2096 // Boolean -> its value. 2097 // Boolean -> its value.
2097 __ LoadRoot(at, Heap::kTrueValueRootIndex); 2098 __ LoadRoot(at, Heap::kTrueValueRootIndex);
2098 __ Branch(instr->TrueLabel(chunk_), eq, reg, Operand(at)); 2099 __ Branch(instr->TrueLabel(chunk_), eq, reg, Operand(at));
2099 __ LoadRoot(at, Heap::kFalseValueRootIndex); 2100 __ LoadRoot(at, Heap::kFalseValueRootIndex);
2100 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at)); 2101 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at));
2101 } 2102 }
2102 if (expected.Contains(ToBooleanStub::NULL_TYPE)) { 2103 if (expected.Contains(ToBooleanICStub::NULL_TYPE)) {
2103 // 'null' -> false. 2104 // 'null' -> false.
2104 __ LoadRoot(at, Heap::kNullValueRootIndex); 2105 __ LoadRoot(at, Heap::kNullValueRootIndex);
2105 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at)); 2106 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at));
2106 } 2107 }
2107 2108
2108 if (expected.Contains(ToBooleanStub::SMI)) { 2109 if (expected.Contains(ToBooleanICStub::SMI)) {
2109 // Smis: 0 -> false, all other -> true. 2110 // Smis: 0 -> false, all other -> true.
2110 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(zero_reg)); 2111 __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(zero_reg));
2111 __ JumpIfSmi(reg, instr->TrueLabel(chunk_)); 2112 __ JumpIfSmi(reg, instr->TrueLabel(chunk_));
2112 } else if (expected.NeedsMap()) { 2113 } else if (expected.NeedsMap()) {
2113 // If we need a map later and have a Smi -> deopt. 2114 // If we need a map later and have a Smi -> deopt.
2114 __ SmiTst(reg, at); 2115 __ SmiTst(reg, at);
2115 DeoptimizeIf(eq, instr, Deoptimizer::kSmi, at, Operand(zero_reg)); 2116 DeoptimizeIf(eq, instr, Deoptimizer::kSmi, at, Operand(zero_reg));
2116 } 2117 }
2117 2118
2118 const Register map = scratch0(); 2119 const Register map = scratch0();
2119 if (expected.NeedsMap()) { 2120 if (expected.NeedsMap()) {
2120 __ ld(map, FieldMemOperand(reg, HeapObject::kMapOffset)); 2121 __ ld(map, FieldMemOperand(reg, HeapObject::kMapOffset));
2121 if (expected.CanBeUndetectable()) { 2122 if (expected.CanBeUndetectable()) {
2122 // Undetectable -> false. 2123 // Undetectable -> false.
2123 __ lbu(at, FieldMemOperand(map, Map::kBitFieldOffset)); 2124 __ lbu(at, FieldMemOperand(map, Map::kBitFieldOffset));
2124 __ And(at, at, Operand(1 << Map::kIsUndetectable)); 2125 __ And(at, at, Operand(1 << Map::kIsUndetectable));
2125 __ Branch(instr->FalseLabel(chunk_), ne, at, Operand(zero_reg)); 2126 __ Branch(instr->FalseLabel(chunk_), ne, at, Operand(zero_reg));
2126 } 2127 }
2127 } 2128 }
2128 2129
2129 if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { 2130 if (expected.Contains(ToBooleanICStub::SPEC_OBJECT)) {
2130 // spec object -> true. 2131 // spec object -> true.
2131 __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset)); 2132 __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset));
2132 __ Branch(instr->TrueLabel(chunk_), 2133 __ Branch(instr->TrueLabel(chunk_),
2133 ge, at, Operand(FIRST_JS_RECEIVER_TYPE)); 2134 ge, at, Operand(FIRST_JS_RECEIVER_TYPE));
2134 } 2135 }
2135 2136
2136 if (expected.Contains(ToBooleanStub::STRING)) { 2137 if (expected.Contains(ToBooleanICStub::STRING)) {
2137 // String value -> false iff empty. 2138 // String value -> false iff empty.
2138 Label not_string; 2139 Label not_string;
2139 __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset)); 2140 __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset));
2140 __ Branch(&not_string, ge , at, Operand(FIRST_NONSTRING_TYPE)); 2141 __ Branch(&not_string, ge , at, Operand(FIRST_NONSTRING_TYPE));
2141 __ ld(at, FieldMemOperand(reg, String::kLengthOffset)); 2142 __ ld(at, FieldMemOperand(reg, String::kLengthOffset));
2142 __ Branch(instr->TrueLabel(chunk_), ne, at, Operand(zero_reg)); 2143 __ Branch(instr->TrueLabel(chunk_), ne, at, Operand(zero_reg));
2143 __ Branch(instr->FalseLabel(chunk_)); 2144 __ Branch(instr->FalseLabel(chunk_));
2144 __ bind(&not_string); 2145 __ bind(&not_string);
2145 } 2146 }
2146 2147
2147 if (expected.Contains(ToBooleanStub::SYMBOL)) { 2148 if (expected.Contains(ToBooleanICStub::SYMBOL)) {
2148 // Symbol value -> true. 2149 // Symbol value -> true.
2149 const Register scratch = scratch1(); 2150 const Register scratch = scratch1();
2150 __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset)); 2151 __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
2151 __ Branch(instr->TrueLabel(chunk_), eq, scratch, Operand(SYMBOL_TYPE)); 2152 __ Branch(instr->TrueLabel(chunk_), eq, scratch, Operand(SYMBOL_TYPE));
2152 } 2153 }
2153 2154
2154 if (expected.Contains(ToBooleanStub::SIMD_VALUE)) { 2155 if (expected.Contains(ToBooleanICStub::SIMD_VALUE)) {
2155 // SIMD value -> true. 2156 // SIMD value -> true.
2156 const Register scratch = scratch1(); 2157 const Register scratch = scratch1();
2157 __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset)); 2158 __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
2158 __ Branch(instr->TrueLabel(chunk_), eq, scratch, 2159 __ Branch(instr->TrueLabel(chunk_), eq, scratch,
2159 Operand(SIMD128_VALUE_TYPE)); 2160 Operand(SIMD128_VALUE_TYPE));
2160 } 2161 }
2161 2162
2162 if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { 2163 if (expected.Contains(ToBooleanICStub::HEAP_NUMBER)) {
2163 // heap number -> false iff +0, -0, or NaN. 2164 // heap number -> false iff +0, -0, or NaN.
2164 DoubleRegister dbl_scratch = double_scratch0(); 2165 DoubleRegister dbl_scratch = double_scratch0();
2165 Label not_heap_number; 2166 Label not_heap_number;
2166 __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); 2167 __ LoadRoot(at, Heap::kHeapNumberMapRootIndex);
2167 __ Branch(&not_heap_number, ne, map, Operand(at)); 2168 __ Branch(&not_heap_number, ne, map, Operand(at));
2168 __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset)); 2169 __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset));
2169 __ BranchF(instr->TrueLabel(chunk_), instr->FalseLabel(chunk_), 2170 __ BranchF(instr->TrueLabel(chunk_), instr->FalseLabel(chunk_),
2170 ne, dbl_scratch, kDoubleRegZero); 2171 ne, dbl_scratch, kDoubleRegZero);
2171 // Falls through if dbl_scratch == 0. 2172 // Falls through if dbl_scratch == 0.
2172 __ Branch(instr->FalseLabel(chunk_)); 2173 __ Branch(instr->FalseLabel(chunk_));
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5692 void LCodeGen::DoStoreFrameContext(LStoreFrameContext* instr) { 5693 void LCodeGen::DoStoreFrameContext(LStoreFrameContext* instr) {
5693 Register context = ToRegister(instr->context()); 5694 Register context = ToRegister(instr->context());
5694 __ sd(context, MemOperand(fp, StandardFrameConstants::kContextOffset)); 5695 __ sd(context, MemOperand(fp, StandardFrameConstants::kContextOffset));
5695 } 5696 }
5696 5697
5697 5698
5698 #undef __ 5699 #undef __
5699 5700
5700 } // namespace internal 5701 } // namespace internal
5701 } // namespace v8 5702 } // namespace v8
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