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

src/mips/full-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
 // Note on Mips implementation:
 //
@@ skipping 3870 matching lines @@
   __ GetObjectType(v0, a1, a1);
   __ Branch(&done, ne, a1, Operand(JS_VALUE_TYPE));
 
   __ lw(v0, FieldMemOperand(v0, JSValue::kValueOffset));
 
   __ bind(&done);
   context()->Plug(v0);
 }
 
 
-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 = v0;
-  Register result = v0;
-  Register scratch1 = a1;
+  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);
-  __ GetObjectType(object, scratch1, scratch1);
-  __ Branch(&done, eq, scratch1, Operand(JS_DATE_TYPE));
-  __ bind(&not_date_object);
-  __ CallRuntime(Runtime::kThrowNotDateError, 0);
+  __ JumpIfSmi(v0, if_false);
+  __ GetObjectType(v0, a1, a1);
+  PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
+  Split(eq, a1, Operand(JS_DATE_TYPE), if_true, if_false, fall_through);
 
-  __ bind(&done);
-  context()->Plug(result);
+  context()->Plug(if_true, if_false);
 }
 
 
 void FullCodeGenerator::EmitDateField(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
   DCHECK_NOT_NULL(args->at(1)->AsLiteral());
   Smi* index = Smi::cast(*(args->at(1)->AsLiteral()->value()));
 
   VisitForAccumulatorValue(args->at(0));  // Load the object.
@@ skipping 1633 matching lines @@
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS