[compiler] Deprecate CompilationInfo::has_context predicate.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1863793004

Cr-Commit-Position: refs/heads/master@{#35348}

src/compiler.cc

@@ -60,7 +60,8 @@ PARSE_INFO_GETTER_WITH_DEFAULT(LanguageMode, language_mode, STRICT)
 PARSE_INFO_GETTER_WITH_DEFAULT(Handle<JSFunction>, closure,
                                Handle<JSFunction>::null())
 PARSE_INFO_GETTER_WITH_DEFAULT(Scope*, scope, nullptr)
-PARSE_INFO_GETTER(Handle<Context>, context)
+PARSE_INFO_GETTER_WITH_DEFAULT(Handle<Context>, context,
+                               Handle<Context>::null())
 PARSE_INFO_GETTER(Handle<SharedFunctionInfo>, shared_info)
 
 #undef PARSE_INFO_GETTER
@@ -110,11 +111,6 @@ bool CompilationInfo::has_shared_info() const {
 }
 
 
-bool CompilationInfo::has_context() const {
-  return parse_info_ && !parse_info_->context().is_null();
-}
-
-
 CompilationInfo::CompilationInfo(ParseInfo* parse_info)
     : CompilationInfo(parse_info, nullptr, Code::ComputeFlags(Code::FUNCTION),
                       BASE, parse_info->isolate(), parse_info->zone()) {

src/compiler.h

@@ -184,7 +184,6 @@ class CompilationInfo {
   Handle<Context> context() const;
   Handle<SharedFunctionInfo> shared_info() const;
   bool has_shared_info() const;
-  bool has_context() const;
   // -----------------------------------------------------------
 
   Isolate* isolate() const {

src/compiler/code-generator.cc

@@ -274,8 +274,7 @@ void CodeGenerator::RecordSafepoint(ReferenceMap* references,
 bool CodeGenerator::IsMaterializableFromFrame(Handle<HeapObject> object,
                                               int* slot_return) {
   if (linkage()->GetIncomingDescriptor()->IsJSFunctionCall()) {
-    if (info()->has_context() && object.is_identical_to(info()->context()) &&
-        !info()->is_osr()) {
+    if (object.is_identical_to(info()->context()) && !info()->is_osr()) {
       *slot_return = Frame::kContextSlot;
       return true;
     } else if (object.is_identical_to(info()->closure())) {