[builtins] Introduce proper base::ieee754::log.

src/crankshaft/x64/lithium-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.
 
 #include "src/crankshaft/x64/lithium-x64.h"
 
 #include <sstream>
 
 #if V8_TARGET_ARCH_X64
 
@@ skipping 1137 matching lines @@
   Representation r = instr->value()->representation();
   if (!r.IsDouble() && !r.IsSmiOrInteger32()) result = AssignPointerMap(result);
   if (!r.IsDouble()) result = AssignEnvironment(result);
   return result;
 }
 
 
 LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) {
   DCHECK(instr->representation().IsDouble());
   DCHECK(instr->value()->representation().IsDouble());
-  LOperand* input = UseRegisterAtStart(instr->value());
-  return MarkAsCall(DefineSameAsFirst(new(zone()) LMathLog(input)), instr);
+  LOperand* input = UseFixedDouble(instr->value(), xmm0);
+  return MarkAsCall(DefineFixedDouble(new (zone()) LMathLog(input), xmm0),
+                    instr);
 }
 
 
 LInstruction* LChunkBuilder::DoMathClz32(HUnaryMathOperation* instr) {
   LOperand* input = UseRegisterAtStart(instr->value());
   LMathClz32* result = new(zone()) LMathClz32(input);
   return DefineAsRegister(result);
 }
 
 
@@ skipping 1399 matching lines @@
   LOperand* index = UseTempRegister(instr->index());
   LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index);
   LInstruction* result = DefineSameAsFirst(load);
   return AssignPointerMap(result);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64