[runtime] First step to sanitize regexp literal creation.

src/crankshaft/ia32/lithium-codegen-ia32.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.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/crankshaft/ia32/lithium-codegen-ia32.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 5173 matching lines @@
 }
 
 
 void LCodeGen::DoToFastProperties(LToFastProperties* instr) {
   DCHECK(ToRegister(instr->value()).is(eax));
   __ push(eax);
   CallRuntime(Runtime::kToFastProperties, 1, instr);
 }
 
 
-void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) {
-  DCHECK(ToRegister(instr->context()).is(esi));
-  Label materialized;
-  // Registers will be used as follows:
-  // ecx = literals array.
-  // ebx = regexp literal.
-  // eax = regexp literal clone.
-  // esi = context.
-  int literal_offset =
-      LiteralsArray::OffsetOfLiteralAt(instr->hydrogen()->literal_index());
-  __ LoadHeapObject(ecx, instr->hydrogen()->literals());
-  __ mov(ebx, FieldOperand(ecx, literal_offset));
-  __ cmp(ebx, factory()->undefined_value());
-  __ j(not_equal, &materialized, Label::kNear);
-
-  // Create regexp literal using runtime function
-  // Result will be in eax.
-  __ push(ecx);
-  __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index())));
-  __ push(Immediate(instr->hydrogen()->pattern()));
-  __ push(Immediate(instr->hydrogen()->flags()));
-  CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr);
-  __ mov(ebx, eax);
-
-  __ bind(&materialized);
-  int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize;
-  Label allocated, runtime_allocate;
-  __ Allocate(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT);
-  __ jmp(&allocated, Label::kNear);
-
-  __ bind(&runtime_allocate);
-  __ push(ebx);
-  __ push(Immediate(Smi::FromInt(size)));
-  CallRuntime(Runtime::kAllocateInNewSpace, 1, instr);
-  __ pop(ebx);
-
-  __ bind(&allocated);
-  // Copy the content into the newly allocated memory.
-  // (Unroll copy loop once for better throughput).
-  for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) {
-    __ mov(edx, FieldOperand(ebx, i));
-    __ mov(ecx, FieldOperand(ebx, i + kPointerSize));
-    __ mov(FieldOperand(eax, i), edx);
-    __ mov(FieldOperand(eax, i + kPointerSize), ecx);
-  }
-  if ((size % (2 * kPointerSize)) != 0) {
-    __ mov(edx, FieldOperand(ebx, size - kPointerSize));
-    __ mov(FieldOperand(eax, size - kPointerSize), edx);
-  }
-}
-
-
 void LCodeGen::DoTypeof(LTypeof* instr) {
   DCHECK(ToRegister(instr->context()).is(esi));
   DCHECK(ToRegister(instr->value()).is(ebx));
   Label end, do_call;
   Register value_register = ToRegister(instr->value());
   __ JumpIfNotSmi(value_register, &do_call);
   __ mov(eax, Immediate(isolate()->factory()->number_string()));
   __ jmp(&end);
   __ bind(&do_call);
   TypeofStub stub(isolate());
@@ skipping 386 matching lines @@
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32