A64: Synchronize with r15204.

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 99c4db55b749c89dbd1cb657c35bc90ebb97773c..11cd307451cc0017429d0ea84be0bbdc410982a5 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -144,7 +144,7 @@ bool CodeStubGraphBuilderBase::BuildGraph() {
   set_current_block(next_block);
 
   HConstant* undefined_constant = new(zone) HConstant(
-      isolate()->factory()->undefined_value(), Representation::Tagged());
+      isolate()->factory()->undefined_value());
   AddInstruction(undefined_constant);
   graph()->set_undefined_constant(undefined_constant);
 
@@ -196,8 +196,7 @@ bool CodeStubGraphBuilderBase::BuildGraph() {
       stack_pop_count->ClearFlag(HValue::kCanOverflow);
     } else {
       int count = descriptor_->hint_stack_parameter_count_;
-      stack_pop_count = AddInstruction(new(zone)
-          HConstant(count, Representation::Integer32()));
+      stack_pop_count = AddInstruction(new(zone) HConstant(count));
     }
   }
 
@@ -391,13 +390,11 @@ HValue* CodeStubGraphBuilder<FastCloneShallowObjectStub>::BuildCodeStub() {
   HValue* boilerplate_size =
       AddInstruction(new(zone) HInstanceSize(boilerplate));
   HValue* size_in_words =
-      AddInstruction(new(zone) HConstant(size >> kPointerSizeLog2,
-                                         Representation::Integer32()));
+      AddInstruction(new(zone) HConstant(size >> kPointerSizeLog2));
   checker.IfCompare(boilerplate_size, size_in_words, Token::EQ);
   checker.Then();
 
-  HValue* size_in_bytes =
-      AddInstruction(new(zone) HConstant(size, Representation::Integer32()));
+  HValue* size_in_bytes = AddInstruction(new(zone) HConstant(size));
   HAllocate::Flags flags = HAllocate::CAN_ALLOCATE_IN_NEW_SPACE;
   if (isolate()->heap()->ShouldGloballyPretenure()) {
     flags = static_cast<HAllocate::Flags>(
@@ -733,12 +730,13 @@ Handle<Code> InternalArrayNArgumentsConstructorStub::GenerateCode() {
 
 template <>
 HValue* CodeStubGraphBuilder<CompareNilICStub>::BuildCodeInitializedStub() {
+  Isolate* isolate = graph()->isolate();
   CompareNilICStub* stub = casted_stub();
   HIfContinuation continuation;
-  Handle<Map> sentinel_map(graph()->isolate()->heap()->meta_map());
-  BuildCompareNil(GetParameter(0),
-                  stub->GetTypes(), sentinel_map,
-                  RelocInfo::kNoPosition, &continuation);
+  Handle<Map> sentinel_map(isolate->heap()->meta_map());
+  Handle<Type> type =
+      CompareNilICStub::StateToType(isolate, stub->GetState(), sentinel_map);
+  BuildCompareNil(GetParameter(0), type, RelocInfo::kNoPosition, &continuation);
   IfBuilder if_nil(this, &continuation);
   if_nil.Then();
   if (continuation.IsFalseReachable()) {