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Issue 2079393003: [builtins] NonNumberToNumber and StringToNumber now use CallRuntime instead of TailCallRuntime (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Address comments Created 4 years, 6 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 #if V8_TARGET_ARCH_X64 5 #if V8_TARGET_ARCH_X64
6 6
7 #include "src/code-factory.h" 7 #include "src/code-factory.h"
8 #include "src/codegen.h" 8 #include "src/codegen.h"
9 #include "src/deoptimizer.h" 9 #include "src/deoptimizer.h"
10 #include "src/full-codegen/full-codegen.h" 10 #include "src/full-codegen/full-codegen.h"
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2087 // Check if string has a cached array index. 2087 // Check if string has a cached array index.
2088 Label runtime; 2088 Label runtime;
2089 __ testl(FieldOperand(rax, String::kHashFieldOffset), 2089 __ testl(FieldOperand(rax, String::kHashFieldOffset),
2090 Immediate(String::kContainsCachedArrayIndexMask)); 2090 Immediate(String::kContainsCachedArrayIndexMask));
2091 __ j(not_zero, &runtime, Label::kNear); 2091 __ j(not_zero, &runtime, Label::kNear);
2092 __ movl(rax, FieldOperand(rax, String::kHashFieldOffset)); 2092 __ movl(rax, FieldOperand(rax, String::kHashFieldOffset));
2093 __ IndexFromHash(rax, rax); 2093 __ IndexFromHash(rax, rax);
2094 __ Ret(); 2094 __ Ret();
2095 2095
2096 __ bind(&runtime); 2096 __ bind(&runtime);
2097 __ PopReturnAddressTo(rcx); // Pop return address. 2097 {
2098 __ Push(rax); // Push argument. 2098 FrameScope frame(masm, StackFrame::INTERNAL);
2099 __ PushReturnAddressFrom(rcx); // Push return address. 2099 // Push argument.
2100 __ TailCallRuntime(Runtime::kStringToNumber); 2100 __ Push(rax);
2101 // We cannot use a tail call here because this builtin can also be called
2102 // from wasm.
2103 __ CallRuntime(Runtime::kStringToNumber);
2104 }
2105 __ Ret();
2101 } 2106 }
2102 2107
2103 // static 2108 // static
2104 void Builtins::Generate_ToNumber(MacroAssembler* masm) { 2109 void Builtins::Generate_ToNumber(MacroAssembler* masm) {
2105 // The ToNumber stub takes one argument in rax. 2110 // The ToNumber stub takes one argument in rax.
2106 Label not_smi; 2111 Label not_smi;
2107 __ JumpIfNotSmi(rax, &not_smi, Label::kNear); 2112 __ JumpIfNotSmi(rax, &not_smi, Label::kNear);
2108 __ Ret(); 2113 __ Ret();
2109 __ bind(&not_smi); 2114 __ bind(&not_smi);
2110 2115
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2132 __ Jump(masm->isolate()->builtins()->StringToNumber(), 2137 __ Jump(masm->isolate()->builtins()->StringToNumber(),
2133 RelocInfo::CODE_TARGET); 2138 RelocInfo::CODE_TARGET);
2134 __ bind(&not_string); 2139 __ bind(&not_string);
2135 2140
2136 Label not_oddball; 2141 Label not_oddball;
2137 __ CmpInstanceType(rdi, ODDBALL_TYPE); 2142 __ CmpInstanceType(rdi, ODDBALL_TYPE);
2138 __ j(not_equal, &not_oddball, Label::kNear); 2143 __ j(not_equal, &not_oddball, Label::kNear);
2139 __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset)); 2144 __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset));
2140 __ Ret(); 2145 __ Ret();
2141 __ bind(&not_oddball); 2146 __ bind(&not_oddball);
2142 2147 {
2143 __ PopReturnAddressTo(rcx); // Pop return address. 2148 FrameScope frame(masm, StackFrame::INTERNAL);
2144 __ Push(rax); // Push argument. 2149 // Push argument.
2145 __ PushReturnAddressFrom(rcx); // Push return address. 2150 __ Push(rax);
2146 __ TailCallRuntime(Runtime::kToNumber); 2151 // We cannot use a tail call here because this builtin can also be called
2152 // from wasm.
2153 __ CallRuntime(Runtime::kToNumber);
2154 }
2155 __ Ret();
2147 } 2156 }
2148 2157
2149 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { 2158 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
2150 // ----------- S t a t e ------------- 2159 // ----------- S t a t e -------------
2151 // -- rax : actual number of arguments 2160 // -- rax : actual number of arguments
2152 // -- rbx : expected number of arguments 2161 // -- rbx : expected number of arguments
2153 // -- rdx : new target (passed through to callee) 2162 // -- rdx : new target (passed through to callee)
2154 // -- rdi : function (passed through to callee) 2163 // -- rdi : function (passed through to callee)
2155 // ----------------------------------- 2164 // -----------------------------------
2156 2165
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3031 __ ret(0); 3040 __ ret(0);
3032 } 3041 }
3033 3042
3034 3043
3035 #undef __ 3044 #undef __
3036 3045
3037 } // namespace internal 3046 } // namespace internal
3038 } // namespace v8 3047 } // namespace v8
3039 3048
3040 #endif // V8_TARGET_ARCH_X64 3049 #endif // V8_TARGET_ARCH_X64
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