Remove IsRegExpEquivalent.

It's not used anywhere.

BUG=none
R=ulan@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/141563013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18995 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/full-codegen-arm.cc

@@ -3814,47 +3814,6 @@ void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) {
 }
 
 
-void FullCodeGenerator::EmitIsRegExpEquivalent(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  ASSERT_EQ(2, args->length());
-
-  Register right = r0;
-  Register left = r1;
-  Register tmp = r2;
-  Register tmp2 = r3;
-
-  VisitForStackValue(args->at(0));
-  VisitForAccumulatorValue(args->at(1));
-  __ pop(left);
-
-  Label done, fail, ok;
-  __ cmp(left, Operand(right));
-  __ b(eq, &ok);
-  // Fail if either is a non-HeapObject.
-  __ and_(tmp, left, Operand(right));
-  __ JumpIfSmi(tmp, &fail);
-  __ ldr(tmp, FieldMemOperand(left, HeapObject::kMapOffset));
-  __ ldrb(tmp2, FieldMemOperand(tmp, Map::kInstanceTypeOffset));
-  __ cmp(tmp2, Operand(JS_REGEXP_TYPE));
-  __ b(ne, &fail);
-  __ ldr(tmp2, FieldMemOperand(right, HeapObject::kMapOffset));
-  __ cmp(tmp, Operand(tmp2));
-  __ b(ne, &fail);
-  __ ldr(tmp, FieldMemOperand(left, JSRegExp::kDataOffset));
-  __ ldr(tmp2, FieldMemOperand(right, JSRegExp::kDataOffset));
-  __ cmp(tmp, tmp2);
-  __ b(eq, &ok);
-  __ bind(&fail);
-  __ LoadRoot(r0, Heap::kFalseValueRootIndex);
-  __ jmp(&done);
-  __ bind(&ok);
-  __ LoadRoot(r0, Heap::kTrueValueRootIndex);
-  __ bind(&done);
-
-  context()->Plug(r0);
-}
-
-
 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   VisitForAccumulatorValue(args->at(0));

src/hydrogen.cc

@@ -10813,12 +10813,6 @@ void HOptimizedGraphBuilder::GenerateMathSqrt(CallRuntime* call) {
 }
 
 
-// Check whether two RegExps are equivalent
-void HOptimizedGraphBuilder::GenerateIsRegExpEquivalent(CallRuntime* call) {
-  return Bailout(kInlinedRuntimeFunctionIsRegExpEquivalent);
-}
-
-
 void HOptimizedGraphBuilder::GenerateGetCachedArrayIndex(CallRuntime* call) {
   ASSERT(call->arguments()->length() == 1);
   CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));

src/ia32/full-codegen-ia32.cc

@@ -3777,44 +3777,6 @@ void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) {
 }
 
 
-void FullCodeGenerator::EmitIsRegExpEquivalent(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  ASSERT_EQ(2, args->length());
-
-  Register right = eax;
-  Register left = ebx;
-  Register tmp = ecx;
-
-  VisitForStackValue(args->at(0));
-  VisitForAccumulatorValue(args->at(1));
-  __ pop(left);
-
-  Label done, fail, ok;
-  __ cmp(left, right);
-  __ j(equal, &ok);
-  // Fail if either is a non-HeapObject.
-  __ mov(tmp, left);
-  __ and_(tmp, right);
-  __ JumpIfSmi(tmp, &fail);
-  __ mov(tmp, FieldOperand(left, HeapObject::kMapOffset));
-  __ CmpInstanceType(tmp, JS_REGEXP_TYPE);
-  __ j(not_equal, &fail);
-  __ cmp(tmp, FieldOperand(right, HeapObject::kMapOffset));
-  __ j(not_equal, &fail);
-  __ mov(tmp, FieldOperand(left, JSRegExp::kDataOffset));
-  __ cmp(tmp, FieldOperand(right, JSRegExp::kDataOffset));
-  __ j(equal, &ok);
-  __ bind(&fail);
-  __ mov(eax, Immediate(isolate()->factory()->false_value()));
-  __ jmp(&done);
-  __ bind(&ok);
-  __ mov(eax, Immediate(isolate()->factory()->true_value()));
-  __ bind(&done);
-
-  context()->Plug(eax);
-}
-
-
 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT(args->length() == 1);

src/mips/full-codegen-mips.cc

@@ -3877,43 +3877,6 @@ void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) {
 }
 
 
-void FullCodeGenerator::EmitIsRegExpEquivalent(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  ASSERT_EQ(2, args->length());
-
-  Register right = v0;
-  Register left = a1;
-  Register tmp = a2;
-  Register tmp2 = a3;
-
-  VisitForStackValue(args->at(0));
-  VisitForAccumulatorValue(args->at(1));  // Result (right) in v0.
-  __ pop(left);
-
-  Label done, fail, ok;
-  __ Branch(&ok, eq, left, Operand(right));
-  // Fail if either is a non-HeapObject.
-  __ And(tmp, left, Operand(right));
-  __ JumpIfSmi(tmp, &fail);
-  __ lw(tmp, FieldMemOperand(left, HeapObject::kMapOffset));
-  __ lbu(tmp2, FieldMemOperand(tmp, Map::kInstanceTypeOffset));
-  __ Branch(&fail, ne, tmp2, Operand(JS_REGEXP_TYPE));
-  __ lw(tmp2, FieldMemOperand(right, HeapObject::kMapOffset));
-  __ Branch(&fail, ne, tmp, Operand(tmp2));
-  __ lw(tmp, FieldMemOperand(left, JSRegExp::kDataOffset));
-  __ lw(tmp2, FieldMemOperand(right, JSRegExp::kDataOffset));
-  __ Branch(&ok, eq, tmp, Operand(tmp2));
-  __ bind(&fail);
-  __ LoadRoot(v0, Heap::kFalseValueRootIndex);
-  __ jmp(&done);
-  __ bind(&ok);
-  __ LoadRoot(v0, Heap::kTrueValueRootIndex);
-  __ bind(&done);
-
-  context()->Plug(v0);
-}
-
-
 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   VisitForAccumulatorValue(args->at(0));

src/objects.h

@@ -1192,8 +1192,6 @@ class MaybeObject BASE_EMBEDDED {
     "Inlined runtime function: GetFromCache")                                 \
   V(kInlinedRuntimeFunctionIsNonNegativeSmi,                                  \
     "Inlined runtime function: IsNonNegativeSmi")                             \
-  V(kInlinedRuntimeFunctionIsRegExpEquivalent,                                \
-    "Inlined runtime function: IsRegExpEquivalent")                           \
   V(kInlinedRuntimeFunctionIsStringWrapperSafeForDefaultValueOf,              \
     "Inlined runtime function: IsStringWrapperSafeForDefaultValueOf")         \
   V(kInliningBailedOut, "Inlining bailed out")                                \

src/runtime.h

@@ -634,7 +634,6 @@ namespace internal {
   F(MathSqrt, 1, 1)                                                          \
   F(MathLog, 1, 1)                                                           \
   F(IsMinusZero, 1, 1)                                                       \
-  F(IsRegExpEquivalent, 2, 1)                                                \
   F(HasCachedArrayIndex, 1, 1)                                               \
   F(GetCachedArrayIndex, 1, 1)                                               \
   F(FastAsciiArrayJoin, 2, 1)                                                \

src/x64/full-codegen-x64.cc

@@ -3758,45 +3758,6 @@ void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) {
 }
 
 
-void FullCodeGenerator::EmitIsRegExpEquivalent(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  ASSERT_EQ(2, args->length());
-
-  Register right = rax;
-  Register left = rbx;
-  Register tmp = rcx;
-
-  VisitForStackValue(args->at(0));
-  VisitForAccumulatorValue(args->at(1));
-  __ pop(left);
-
-  Label done, fail, ok;
-  __ cmpq(left, right);
-  __ j(equal, &ok, Label::kNear);
-  // Fail if either is a non-HeapObject.
-  Condition either_smi = masm()->CheckEitherSmi(left, right, tmp);
-  __ j(either_smi, &fail, Label::kNear);
-  __ j(zero, &fail, Label::kNear);
-  __ movp(tmp, FieldOperand(left, HeapObject::kMapOffset));
-  __ cmpb(FieldOperand(tmp, Map::kInstanceTypeOffset),
-          Immediate(JS_REGEXP_TYPE));
-  __ j(not_equal, &fail, Label::kNear);
-  __ cmpq(tmp, FieldOperand(right, HeapObject::kMapOffset));
-  __ j(not_equal, &fail, Label::kNear);
-  __ movp(tmp, FieldOperand(left, JSRegExp::kDataOffset));
-  __ cmpq(tmp, FieldOperand(right, JSRegExp::kDataOffset));
-  __ j(equal, &ok, Label::kNear);
-  __ bind(&fail);
-  __ Move(rax, isolate()->factory()->false_value());
-  __ jmp(&done, Label::kNear);
-  __ bind(&ok);
-  __ Move(rax, isolate()->factory()->true_value());
-  __ bind(&done);
-
-  context()->Plug(rax);
-}
-
-
 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT(args->length() == 1);