X64: Fix bug in DoBranch that miss detecting NaN as falsy.

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index f80e53c13a2dcbda51bcd84afe0c5d60129f5959..787a4263ee60ef94028c22ad6ee953d957d8d11f 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -1326,10 +1326,10 @@ class LCallConstantFunction: public LTemplateInstruction<1, 0, 0> {
 };
 
 
-class LCallKeyed: public LTemplateInstruction<1, 0, 1> {
+class LCallKeyed: public LTemplateInstruction<1, 1, 0> {
  public:
-  explicit LCallKeyed(LOperand* temp) {
-    temps_[0] = temp;
+  explicit LCallKeyed(LOperand* key) {
+    inputs_[0] = key;
   }
 
   DECLARE_CONCRETE_INSTRUCTION(CallKeyed, "call-keyed")
@@ -1898,30 +1898,30 @@ class LChunkBuilder BASE_EMBEDDED {
   MUST_USE_RESULT LOperand* UseRegister(HValue* value);
   MUST_USE_RESULT LOperand* UseRegisterAtStart(HValue* value);
 
-  // A value in a register that may be trashed.
+  // An input operand in a register that may be trashed.
   MUST_USE_RESULT LOperand* UseTempRegister(HValue* value);
 
-  // An operand value in a register or stack slot.
+  // An input operand in a register or stack slot.
   MUST_USE_RESULT LOperand* Use(HValue* value);
   MUST_USE_RESULT LOperand* UseAtStart(HValue* value);
 
-  // An operand value in a register, stack slot or a constant operand.
+  // An input operand in a register, stack slot or a constant operand.
   MUST_USE_RESULT LOperand* UseOrConstant(HValue* value);
   MUST_USE_RESULT LOperand* UseOrConstantAtStart(HValue* value);
 
-  // An operand value in a register or a constant operand.
+  // An input operand in a register or a constant operand.
   MUST_USE_RESULT LOperand* UseRegisterOrConstant(HValue* value);
   MUST_USE_RESULT LOperand* UseRegisterOrConstantAtStart(HValue* value);
 
+  // An input operand in register, stack slot or a constant operand.
+  // Will not be moved to a register even if one is freely available.
+  MUST_USE_RESULT LOperand* UseAny(HValue* value);
+
   // Temporary operand that must be in a register.
   MUST_USE_RESULT LUnallocated* TempRegister();
   MUST_USE_RESULT LOperand* FixedTemp(Register reg);
   MUST_USE_RESULT LOperand* FixedTemp(XMMRegister reg);
 
-  // An operand value in register, stack slot or a constant operand.
-  // Will not be moved to a register even if one is freely available.
-  LOperand* UseAny(HValue* value);
-
   // Methods for setting up define-use relationships.
   // Return the same instruction that they are passed.
   template<int I, int T>