ARM: Fast path for integer inputs to EmitVFPTruncate

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
===================================================================
--- src/arm/lithium-arm.cc	(revision 12656)
+++ src/arm/lithium-arm.cc	(working copy)
@@ -1040,7 +1040,8 @@
     return DefineFixedDouble(result, d2);
   } else {
     LOperand* input = UseRegisterAtStart(instr->value());
-    LOperand* temp = (op == kMathFloor) ? TempRegister() : NULL;
+
+    LOperand* temp = (op == kMathRound) ? FixedTemp(d3) : NULL;
     LUnaryMathOperation* result = new(zone()) LUnaryMathOperation(input, temp);
     switch (op) {
       case kMathAbs:
@@ -1616,8 +1617,7 @@
         LOperand* temp1 = TempRegister();
         LOperand* temp2 = instr->CanTruncateToInt32() ? TempRegister()
                                                       : NULL;
-        LOperand* temp3 = instr->CanTruncateToInt32() ? FixedTemp(d11)
-                                                      : NULL;
+        LOperand* temp3 = FixedTemp(d11);
         res = DefineSameAsFirst(new(zone()) LTaggedToI(value,
                                                        temp1,
                                                        temp2,