[stubs] ToNumberStub --> ToNumber builtin.

src/x64/builtins-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1645 matching lines @@
   __ bind(&loop);
   {
     // Check if all parameters done.
     __ testp(rcx, rcx);
     __ j(zero, &done_loop);
 
     // Load the next parameter tagged value into rbx.
     __ movp(rbx, Operand(rsp, rcx, times_pointer_size, 0));
 
     // Load the double value of the parameter into xmm1, maybe converting the
-    // parameter to a number first using the ToNumberStub if necessary.
+    // parameter to a number first using the ToNumber builtin if necessary.
     Label convert, convert_smi, convert_number, done_convert;
     __ bind(&convert);
     __ JumpIfSmi(rbx, &convert_smi);
     __ JumpIfRoot(FieldOperand(rbx, HeapObject::kMapOffset),
                   Heap::kHeapNumberMapRootIndex, &convert_number);
     {
-      // Parameter is not a Number, use the ToNumberStub to convert it.
+      // Parameter is not a Number, use the ToNumber builtin to convert it.
       FrameScope scope(masm, StackFrame::INTERNAL);
       __ Integer32ToSmi(rax, rax);
       __ Integer32ToSmi(rcx, rcx);
       __ Push(rax);
       __ Push(rcx);
       __ Push(rdx);
       __ movp(rax, rbx);
-      ToNumberStub stub(masm->isolate());
-      __ CallStub(&stub);
+      __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
       __ movp(rbx, rax);
       __ Pop(rdx);
       __ Pop(rcx);
       __ Pop(rax);
       {
         // Restore the double accumulator value (xmm0).
         Label restore_smi, done_restore;
         __ JumpIfSmi(rdx, &restore_smi, Label::kNear);
         __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset));
         __ jmp(&done_restore, Label::kNear);
@@ skipping 69 matching lines @@
     __ testp(rax, rax);
     __ j(zero, &no_arguments, Label::kNear);
     __ movp(rbx, args.GetArgumentOperand(1));
     __ PopReturnAddressTo(rcx);
     __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
     __ PushReturnAddressFrom(rcx);
     __ movp(rax, rbx);
   }
 
   // 2a. Convert the first argument to a number.
-  ToNumberStub stub(masm->isolate());
-  __ TailCallStub(&stub);
+  __ Jump(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
 
   // 2b. No arguments, return +0 (already in rax).
   __ bind(&no_arguments);
   __ ret(1 * kPointerSize);
 }
 
 
 // static
 void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
   // ----------- S t a t e -------------
@@ skipping 30 matching lines @@
     Label done_convert;
     __ JumpIfSmi(rbx, &done_convert);
     __ CompareRoot(FieldOperand(rbx, HeapObject::kMapOffset),
                    Heap::kHeapNumberMapRootIndex);
     __ j(equal, &done_convert);
     {
       FrameScope scope(masm, StackFrame::INTERNAL);
       __ Push(rdx);
       __ Push(rdi);
       __ Move(rax, rbx);
-      ToNumberStub stub(masm->isolate());
-      __ CallStub(&stub);
+      __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
       __ Move(rbx, rax);
       __ Pop(rdi);
       __ Pop(rdx);
     }
     __ bind(&done_convert);
   }
 
   // 4. Check if new target and constructor differ.
   Label new_object;
   __ cmpp(rdx, rdi);
@@ skipping 253 matching lines @@
   __ IndexFromHash(rax, rax);
   __ Ret();
 
   __ bind(&runtime);
   __ PopReturnAddressTo(rcx);     // Pop return address.
   __ Push(rax);                   // Push argument.
   __ PushReturnAddressFrom(rcx);  // Push return address.
   __ TailCallRuntime(Runtime::kStringToNumber);
 }
 
+// static
+void Builtins::Generate_ToNumber(MacroAssembler* masm) {
+  // The ToNumber stub takes one argument in rax.
+  Label not_smi;
+  __ JumpIfNotSmi(rax, &not_smi, Label::kNear);
+  __ Ret();
+  __ bind(&not_smi);
+
+  Label not_heap_number;
+  __ CompareRoot(FieldOperand(rax, HeapObject::kMapOffset),
+                 Heap::kHeapNumberMapRootIndex);
+  __ j(not_equal, &not_heap_number, Label::kNear);
+  __ Ret();
+  __ bind(&not_heap_number);
+
+  __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
+          RelocInfo::CODE_TARGET);
+}
+
+// static
+void Builtins::Generate_NonNumberToNumber(MacroAssembler* masm) {
+  // The NonNumberToNumber stub takes one argument in rax.
+  __ AssertNotNumber(rax);
+
+  Label not_string;
+  __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdi);
+  // rax: object
+  // rdi: object map
+  __ j(above_equal, &not_string, Label::kNear);
+  __ Jump(masm->isolate()->builtins()->StringToNumber(),
+          RelocInfo::CODE_TARGET);
+  __ bind(&not_string);
+
+  Label not_oddball;
+  __ CmpInstanceType(rdi, ODDBALL_TYPE);
+  __ j(not_equal, &not_oddball, Label::kNear);
+  __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset));
+  __ Ret();
+  __ bind(&not_oddball);
+
+  __ PopReturnAddressTo(rcx);     // Pop return address.
+  __ Push(rax);                   // Push argument.
+  __ PushReturnAddressFrom(rcx);  // Push return address.
+  __ TailCallRuntime(Runtime::kToNumber);
+}
+
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax : actual number of arguments
   //  -- rbx : expected number of arguments
   //  -- rdx : new target (passed through to callee)
   //  -- rdi : function (passed through to callee)
   // -----------------------------------
 
   Label invoke, dont_adapt_arguments, stack_overflow;
   Counters* counters = masm->isolate()->counters();
@@ skipping 872 matching lines @@
   __ ret(0);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64