}
-void MacroAssembler::SmiTryAddConstant(Register dst,
- Register src,
- Smi* constant,
- Label* on_not_smi_result,
- Label::Distance near_jump) {
- // Does not assume that src is a smi.
- ASSERT_EQ(static_cast<int>(1), static_cast<int>(kSmiTagMask));
- STATIC_ASSERT(kSmiTag == 0);
- ASSERT(!dst.is(kScratchRegister));
- ASSERT(!src.is(kScratchRegister));
-
- JumpIfNotSmi(src, on_not_smi_result, near_jump);
- Register tmp = (dst.is(src) ? kScratchRegister : dst);
- LoadSmiConstant(tmp, constant);
- addq(tmp, src);
- j(overflow, on_not_smi_result, near_jump);
- if (dst.is(src)) {
- movq(dst, tmp);
- }
-}
-
-
void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) {
if (constant->value() == 0) {
if (!dst.is(src)) {
// Smis represent a subset of integers. The subset is always equivalent to
// a two's complement interpretation of a fixed number of bits.
- // Optimistically adds an integer constant to a supposed smi.
- // If the src is not a smi, or the result is not a smi, jump to
- // the label.
- void SmiTryAddConstant(Register dst,
- Register src,
- Smi* constant,
- Label* on_not_smi_result,
- Label::Distance near_jump = Label::kFar);
-
// Add an integer constant to a tagged smi, giving a tagged smi as result.
// No overflow testing on the result is done.
void SmiAddConstant(Register dst, Register src, Smi* constant);