Remove unnecessary MarkAsDeferredCalling when changing a tagged value to double

R=danno@chromium.org

Review URL: https://codereview.chromium.org/25373003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17174 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/lithium-arm.cc

@@ -1946,7 +1946,6 @@ LInstruction* LChunkBuilder::DoChange(HChange* instr) {
   }
   if (from.IsTagged()) {
     if (to.IsDouble()) {
-      info()->MarkAsDeferredCalling();
       LOperand* value = UseRegister(instr->value());
       LNumberUntagD* res = new(zone()) LNumberUntagD(value);
       return AssignEnvironment(DefineAsRegister(res));

src/ia32/lithium-ia32.cc

@@ -1926,7 +1926,6 @@ LInstruction* LChunkBuilder::DoChange(HChange* instr) {
   // building a stack frame.
   if (from.IsTagged()) {
     if (to.IsDouble()) {
-      info()->MarkAsDeferredCalling();
       LOperand* value = UseRegister(instr->value());
       // Temp register only necessary for minus zero check.
       LOperand* temp = TempRegister();

src/mips/lithium-mips.cc

@@ -1866,7 +1866,6 @@ LInstruction* LChunkBuilder::DoChange(HChange* instr) {
   }
   if (from.IsTagged()) {
     if (to.IsDouble()) {
-      info()->MarkAsDeferredCalling();
       LOperand* value = UseRegister(instr->value());
       LNumberUntagD* res = new(zone()) LNumberUntagD(value);
       return AssignEnvironment(DefineAsRegister(res));

src/x64/lithium-x64.cc

@@ -1822,7 +1822,6 @@ LInstruction* LChunkBuilder::DoChange(HChange* instr) {
   // building a stack frame.
   if (from.IsTagged()) {
     if (to.IsDouble()) {
-      info()->MarkAsDeferredCalling();
       LOperand* value = UseRegister(instr->value());
       LNumberUntagD* res = new(zone()) LNumberUntagD(value);
       return AssignEnvironment(DefineAsRegister(res));