[cleanup] Delete unused code in codegen*.cc

Bug: v8:6409
Change-Id: I2902d9ad87bab3559c776593ca99d275eeaca8c0
Reviewed-on: https://chromium-review.googlesource.com/622411Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47484}

src/arm/codegen-arm.cc

@@ -298,24 +298,6 @@ UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) {
 
 #undef __
 
-
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
-
 // -------------------------------------------------------------------------
 // Code generators
 

src/arm64/codegen-arm64.cc

@@ -21,24 +21,6 @@ UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) {
   return nullptr;
 }
 
-
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
-
 // -------------------------------------------------------------------------
 // Code generators
 

src/code-stubs.h

@@ -465,24 +465,6 @@ class TurboFanCodeStub : public CodeStub {
   DEFINE_CODE_STUB_BASE(TurboFanCodeStub, CodeStub);
 };
 
-
-// Helper interface to prepare to/restore after making runtime calls.
-class RuntimeCallHelper {
- public:
-  virtual ~RuntimeCallHelper() {}
-
-  virtual void BeforeCall(MacroAssembler* masm) const = 0;
-
-  virtual void AfterCall(MacroAssembler* masm) const = 0;
-
- protected:
-  RuntimeCallHelper() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(RuntimeCallHelper);
-};
-
-
 }  // namespace internal
 }  // namespace v8
 
@@ -509,30 +491,6 @@ class RuntimeCallHelper {
 namespace v8 {
 namespace internal {
 
-
-// RuntimeCallHelper implementation used in stubs: enters/leaves a
-// newly created internal frame before/after the runtime call.
-class StubRuntimeCallHelper : public RuntimeCallHelper {
- public:
-  StubRuntimeCallHelper() {}
-
-  void BeforeCall(MacroAssembler* masm) const override;
-
-  void AfterCall(MacroAssembler* masm) const override;
-};
-
-
-// Trivial RuntimeCallHelper implementation.
-class NopRuntimeCallHelper : public RuntimeCallHelper {
- public:
-  NopRuntimeCallHelper() {}
-
-  void BeforeCall(MacroAssembler* masm) const override {}
-
-  void AfterCall(MacroAssembler* masm) const override {}
-};
-
-
 class StringLengthStub : public TurboFanCodeStub {
  public:
   explicit StringLengthStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}

src/codegen.cc

@@ -69,21 +69,6 @@ UNARY_MATH_FUNCTION(sqrt, CreateSqrtFunction)
 
 #undef UNARY_MATH_FUNCTION
 
-
-#ifdef DEBUG
-
-Comment::Comment(Assembler* assembler, const char* msg)
-    : assembler_(assembler), msg_(msg) {
-  assembler_->RecordComment(msg);
-}
-
-
-Comment::~Comment() {
-  if (msg_[0] == '[') assembler_->RecordComment("]");
-}
-
-#endif  // DEBUG
-
 void CodeGenerator::MakeCodePrologue(ParseInfo* parse_info,
                                      CompilationInfo* info, const char* kind) {
   bool print_ast = false;

src/ia32/codegen-ia32.cc

@@ -13,24 +13,6 @@
 namespace v8 {
 namespace internal {
 
-
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
-
 #define __ masm.
 
 

src/macro-assembler.h

@@ -187,30 +187,6 @@ class NoCurrentFrameScope {
   bool saved_;
 };
 
-
-// Support for "structured" code comments.
-#ifdef DEBUG
-
-class Comment {
- public:
-  Comment(Assembler* assembler, const char* msg);
-  ~Comment();
-
- private:
-  Assembler* assembler_;
-  const char* msg_;
-};
-
-#else
-
-class Comment {
- public:
-  Comment(Assembler*, const char*) {}
-};
-
-#endif  // DEBUG
-
-
 // Wrapper class for passing expected and actual parameter counts as
 // either registers or immediate values. Used to make sure that the
 // caller provides exactly the expected number of parameters to the

src/mips/codegen-mips.cc

@@ -582,24 +582,6 @@ UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) {
 
 #undef __
 
-
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
-
 // -------------------------------------------------------------------------
 // Code generators
 

src/mips64/codegen-mips64.cc

@@ -584,24 +584,6 @@ UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) {
 
 #undef __
 
-
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
-
 // -------------------------------------------------------------------------
 // Code generators
 

src/ppc/codegen-ppc.cc

@@ -51,24 +51,6 @@ UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) {
 
 #undef __
 
-
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
-
 // -------------------------------------------------------------------------
 // Code generators
 

src/s390/codegen-s390.cc

@@ -47,21 +47,6 @@ UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) {
 
 #undef __
 
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
 // -------------------------------------------------------------------------
 // Code generators
 

src/x64/codegen-x64.cc

@@ -13,23 +13,6 @@
 namespace v8 {
 namespace internal {
 
-// -------------------------------------------------------------------------
-// Platform-specific RuntimeCallHelper functions.
-
-void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
-  masm->EnterFrame(StackFrame::INTERNAL);
-  DCHECK(!masm->has_frame());
-  masm->set_has_frame(true);
-}
-
-
-void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
-  masm->LeaveFrame(StackFrame::INTERNAL);
-  DCHECK(masm->has_frame());
-  masm->set_has_frame(false);
-}
-
-
 #define __ masm.