[date] Use explicit control flow to replace %_ThrowIfNotADate.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index 9931e0a8066711a42b70493bb6a8cb5753f2215e..b816f1eeb5a6c21cd3d92009c4e58db1a15aec10 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -3906,25 +3906,25 @@ void FullCodeGenerator::EmitValueOf(CallRuntime* expr) {
 }
 
 
-void FullCodeGenerator::EmitThrowIfNotADate(CallRuntime* expr) {
+void FullCodeGenerator::EmitIsDate(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK_EQ(1, args->length());
 
-  VisitForAccumulatorValue(args->at(0));  // Load the object.
+  VisitForAccumulatorValue(args->at(0));
 
-  Label done, not_date_object;
-  Register object = r0;
-  Register result = r0;
-  Register scratch0 = r9;
+  Label materialize_true, materialize_false;
+  Label* if_true = nullptr;
+  Label* if_false = nullptr;
+  Label* fall_through = nullptr;
+  context()->PrepareTest(&materialize_true, &materialize_false, &if_true,
+                         &if_false, &fall_through);
 
-  __ JumpIfSmi(object, &not_date_object);
-  __ CompareObjectType(object, scratch0, scratch0, JS_DATE_TYPE);
-  __ b(eq, &done);
-  __ bind(&not_date_object);
-  __ CallRuntime(Runtime::kThrowNotDateError, 0);
+  __ JumpIfSmi(r0, if_false);
+  __ CompareObjectType(r0, r1, r1, JS_DATE_TYPE);
+  PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
+  Split(eq, if_true, if_false, fall_through);
 
-  __ bind(&done);
-  context()->Plug(result);
+  context()->Plug(if_true, if_false);
 }