Replace DeoptimizeOnUndefined with whitelisting AllowUndefinedAsNan

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 35da23d76b0fbd989a0be08a276cfd67dd79879b..86c6d5cf8b0b39e0aa53da1727e5d09e3db02888 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -4683,7 +4683,7 @@ void LCodeGen::DoSmiUntag(LSmiUntag* instr) {
 
 void LCodeGen::EmitNumberUntagD(Register input_reg,
                                 XMMRegister result_reg,
-                                bool deoptimize_on_undefined,
+                                bool allow_undefined_as_nan,
                                 bool deoptimize_on_minus_zero,
                                 LEnvironment* env,
                                 NumberUntagDMode mode) {
@@ -4698,7 +4698,7 @@ void LCodeGen::EmitNumberUntagD(Register input_reg,
     // Heap number map check.
     __ CompareRoot(FieldOperand(input_reg, HeapObject::kMapOffset),
                    Heap::kHeapNumberMapRootIndex);
-    if (deoptimize_on_undefined) {
+    if (!allow_undefined_as_nan) {
       DeoptimizeIf(not_equal, env);
     } else {
       Label heap_number, convert;
@@ -4834,7 +4834,7 @@ void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) {
   }
 
   EmitNumberUntagD(input_reg, result_reg,
-                   instr->hydrogen()->deoptimize_on_undefined(),
+                   instr->hydrogen()->allow_undefined_as_nan(),
                    instr->hydrogen()->deoptimize_on_minus_zero(),
                    instr->environment(),
                    mode);