StringCharLoadGenerator::Generate(masm,
object_,
- index_,
+ index_.W(),
result_,
&call_runtime_);
__ SmiTag(result_);
Register index,
Register result,
Label* call_runtime) {
+ ASSERT(string.Is64Bits() && index.Is32Bits() && result.Is64Bits());
// Fetch the instance type of the receiver into result register.
__ Ldr(result, FieldMemOperand(string, HeapObject::kMapOffset));
__ Ldrb(result, FieldMemOperand(result, Map::kInstanceTypeOffset));
// Handle slices.
Label indirect_string_loaded;
- __ Ldrsw(result,
- UntagSmiFieldMemOperand(string, SlicedString::kOffsetOffset));
+ __ Ldr(result.W(),
+ UntagSmiFieldMemOperand(string, SlicedString::kOffsetOffset));
__ Ldr(string, FieldMemOperand(string, SlicedString::kParentOffset));
- __ Add(index, index, result);
+ __ Add(index, index, result.W());
__ B(&indirect_string_loaded);
// Handle cons strings.
STATIC_ASSERT(kTwoByteStringTag == 0);
__ TestAndBranchIfAnySet(result, kStringEncodingMask, &ascii);
// Two-byte string.
- __ Ldrh(result, MemOperand(string, index, LSL, 1));
+ __ Ldrh(result, MemOperand(string, index, SXTW, 1));
__ B(&done);
__ Bind(&ascii);
// Ascii string.
- __ Ldrb(result, MemOperand(string, index));
+ __ Ldrb(result, MemOperand(string, index, SXTW));
__ Bind(&done);
}
public:
// Generates the code for handling different string types and loading the
// indexed character into |result|. We expect |index| as untagged input and
- // |result| as untagged output.
+ // |result| as untagged output. Register index is asserted to be a 32-bit W
+ // register.
static void Generate(MacroAssembler* masm,
Register string,
Register index,
StringCharLoadGenerator::Generate(masm(),
ToRegister(instr->string()),
- ToRegister(instr->index()),
+ ToRegister32(instr->index()),
ToRegister(instr->result()),
deferred->entry());
__ Bind(deferred->exit());
new(zone()) DeferredStringCharFromCode(this, instr);
ASSERT(instr->hydrogen()->value()->representation().IsInteger32());
- Register char_code = ToRegister(instr->char_code());
+ Register char_code = ToRegister32(instr->char_code());
Register result = ToRegister(instr->result());
- __ Cmp(char_code, Operand(String::kMaxOneByteCharCode));
+ __ Cmp(char_code, String::kMaxOneByteCharCode);
__ B(hi, deferred->entry());
__ LoadRoot(result, Heap::kSingleCharacterStringCacheRootIndex);
- __ Add(result, result, Operand(char_code, LSL, kPointerSizeLog2));
+ __ Add(result, result, Operand(char_code, SXTW, kPointerSizeLog2));
__ Ldr(result, FieldMemOperand(result, FixedArray::kHeaderSize));
__ CompareRoot(result, Heap::kUndefinedValueRootIndex);
__ B(eq, deferred->entry());