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MIPS: RegExp: Add support for table-based character class code generation. This is a commit of http://codereview.chromium.org/9968032/ for Daniel Kalmar

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git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11206 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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erik.corry@gmail.com 2012-04-02 11:27:37 +00:00
parent 18068abd0e
commit b5bf01ec79
1 changed files with 36 additions and 0 deletions
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36
src/mips/regexp-macro-assembler-mips.cc
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@ -482,6 +482,42 @@ void RegExpMacroAssemblerMIPS::CheckNotCharacterAfterMinusAnd(
}
void RegExpMacroAssemblerMIPS::CheckCharacterInRange(
uc16 from,
uc16 to,
Label* on_in_range) {
__ Subu(a0, current_character(), Operand(from));
// Unsigned lower-or-same condition.
BranchOrBacktrack(on_in_range, ls, a0, Operand(to - from));
}
void RegExpMacroAssemblerMIPS::CheckCharacterNotInRange(
uc16 from,
uc16 to,
Label* on_not_in_range) {
__ Subu(a0, current_character(), Operand(from));
// Unsigned higher condition.
BranchOrBacktrack(on_not_in_range, hi, a0, Operand(to - from));
}
void RegExpMacroAssemblerMIPS::CheckBitInTable(
Handle<ByteArray> table,
Label* on_bit_set) {
__ li(a0, Operand(table));
if (mode_ != ASCII || kTableMask != String::kMaxAsciiCharCode) {
__ And(a1, current_character(), Operand(kTableSize - 1));
__ Addu(a0, a0, a1);
} else {
__ Addu(a0, a0, current_character());
}
__ lbu(a0, MemOperand(a0, ByteArray::kHeaderSize - kHeapObjectTag));
BranchOrBacktrack(on_bit_set, ne, a0, Operand(zero_reg));
}
bool RegExpMacroAssemblerMIPS::CheckSpecialCharacterClass(uc16 type,
Label* on_no_match) {
// Range checks (c in min..max) are generally implemented by an unsigned