[runtime] First step to sanitize regexp literal creation.

src/crankshaft/x64/lithium-codegen-x64.cc

Index: src/crankshaft/x64/lithium-codegen-x64.cc
diff --git a/src/crankshaft/x64/lithium-codegen-x64.cc b/src/crankshaft/x64/lithium-codegen-x64.cc
index 62648f25101ceb7d1d0ad3d8a0b7029e819a5470..4e77aa1e14783099c241ac01130c4288d7392924 100644
--- a/src/crankshaft/x64/lithium-codegen-x64.cc
+++ b/src/crankshaft/x64/lithium-codegen-x64.cc
@@ -5377,57 +5377,6 @@ void LCodeGen::DoToFastProperties(LToFastProperties* instr) {
 }
 
 
-void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) {
-  DCHECK(ToRegister(instr->context()).is(rsi));
-  Label materialized;
-  // Registers will be used as follows:
-  // rcx = literals array.
-  // rbx = regexp literal.
-  // rax = regexp literal clone.
-  int literal_offset =
-      LiteralsArray::OffsetOfLiteralAt(instr->hydrogen()->literal_index());
-  __ Move(rcx, instr->hydrogen()->literals());
-  __ movp(rbx, FieldOperand(rcx, literal_offset));
-  __ CompareRoot(rbx, Heap::kUndefinedValueRootIndex);
-  __ j(not_equal, &materialized, Label::kNear);
-
-  // Create regexp literal using runtime function
-  // Result will be in rax.
-  __ Push(rcx);
-  __ Push(Smi::FromInt(instr->hydrogen()->literal_index()));
-  __ Push(instr->hydrogen()->pattern());
-  __ Push(instr->hydrogen()->flags());
-  CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr);
-  __ movp(rbx, rax);
-
-  __ bind(&materialized);
-  int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize;
-  Label allocated, runtime_allocate;
-  __ Allocate(size, rax, rcx, rdx, &runtime_allocate, TAG_OBJECT);
-  __ jmp(&allocated, Label::kNear);
-
-  __ bind(&runtime_allocate);
-  __ Push(rbx);
-  __ Push(Smi::FromInt(size));
-  CallRuntime(Runtime::kAllocateInNewSpace, 1, instr);
-  __ Pop(rbx);
-
-  __ 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) {
-    __ movp(rdx, FieldOperand(rbx, i));
-    __ movp(rcx, FieldOperand(rbx, i + kPointerSize));
-    __ movp(FieldOperand(rax, i), rdx);
-    __ movp(FieldOperand(rax, i + kPointerSize), rcx);
-  }
-  if ((size % (2 * kPointerSize)) != 0) {
-    __ movp(rdx, FieldOperand(rbx, size - kPointerSize));
-    __ movp(FieldOperand(rax, size - kPointerSize), rdx);
-  }
-}
-
-
 void LCodeGen::DoTypeof(LTypeof* instr) {
   DCHECK(ToRegister(instr->context()).is(rsi));
   DCHECK(ToRegister(instr->value()).is(rbx));