helps us decide if we have two ascii strings. We don't care if they
are internalized or not. A few days ago we flipped the meaning of the
internalized bit in INSTANCE_TYPE, and that broke this custom mask.
This CL effects a repair.
BUG=
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/
19514004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15797
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00
Register scratch1,
Register scratch2,
Label* failure) {
- int kFlatAsciiStringMask =
+ const int kFlatAsciiStringMask =
kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask;
- int kFlatAsciiStringTag = ASCII_STRING_TYPE;
+ const int kFlatAsciiStringTag =
+ kStringTag | kOneByteStringTag | kSeqStringTag;
and_(scratch1, first, Operand(kFlatAsciiStringMask));
and_(scratch2, second, Operand(kFlatAsciiStringMask));
cmp(scratch1, Operand(kFlatAsciiStringTag));
void MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii(Register type,
Register scratch,
Label* failure) {
- int kFlatAsciiStringMask =
+ const int kFlatAsciiStringMask =
kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask;
- int kFlatAsciiStringTag = ASCII_STRING_TYPE;
+ const int kFlatAsciiStringTag =
+ kStringTag | kOneByteStringTag | kSeqStringTag;
and_(scratch, type, Operand(kFlatAsciiStringMask));
cmp(scratch, Operand(kFlatAsciiStringTag));
b(ne, failure);
__ movzx_b(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset));
__ and_(scratch, Immediate(
kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask));
- __ cmp(scratch, ASCII_STRING_TYPE);
+ __ cmp(scratch, kStringTag | kOneByteStringTag | kSeqStringTag);
__ j(not_equal, &bailout);
// Add (separator length times array_length) - separator length
// Check that both are flat ASCII strings.
const int kFlatAsciiStringMask =
kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask;
- const int kFlatAsciiStringTag = ASCII_STRING_TYPE;
+ const int kFlatAsciiStringTag =
+ kStringTag | kOneByteStringTag | kSeqStringTag;
// Interleave bits from both instance types and compare them in one check.
ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3));
and_(scratch1, kFlatAsciiStringMask);
Register scratch1,
Register scratch2,
Label* failure) {
- int kFlatAsciiStringMask =
+ const int kFlatAsciiStringMask =
kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask;
- int kFlatAsciiStringTag = ASCII_STRING_TYPE;
+ const int kFlatAsciiStringTag =
+ kStringTag | kOneByteStringTag | kSeqStringTag;
ASSERT(kFlatAsciiStringTag <= 0xffff); // Ensure this fits 16-bit immed.
andi(scratch1, first, kFlatAsciiStringMask);
Branch(failure, ne, scratch1, Operand(kFlatAsciiStringTag));
void MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii(Register type,
Register scratch,
Label* failure) {
- int kFlatAsciiStringMask =
+ const int kFlatAsciiStringMask =
kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask;
- int kFlatAsciiStringTag = ASCII_STRING_TYPE;
+ const int kFlatAsciiStringTag =
+ kStringTag | kOneByteStringTag | kSeqStringTag;
And(scratch, type, Operand(kFlatAsciiStringMask));
Branch(failure, ne, scratch, Operand(kFlatAsciiStringTag));
}
ASSERT(kNotStringTag != 0);
const int kFlatAsciiStringMask =
kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask;
- const int kFlatAsciiStringTag = ASCII_STRING_TYPE;
+ const int kFlatAsciiStringTag =
+ kStringTag | kOneByteStringTag | kSeqStringTag;
andl(scratch1, Immediate(kFlatAsciiStringMask));
andl(scratch2, Immediate(kFlatAsciiStringMask));
ASSERT(kNotStringTag != 0);
const int kFlatAsciiStringMask =
kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask;
- const int kFlatAsciiStringTag = ASCII_STRING_TYPE;
+ const int kFlatAsciiStringTag =
+ kStringTag | kOneByteStringTag | kSeqStringTag;
andl(scratch1, Immediate(kFlatAsciiStringMask));
andl(scratch2, Immediate(kFlatAsciiStringMask));