inline void _emitJne(uint8_t* dest_addr, bool unlikely) {
_emitJmpCond(dest_addr, X86::COND_NOT_EQUAL, unlikely);
int offset = dest_addr - addr - 2;
if (unlikely)
offset -= 1;
if (offset >= -0x80 && offset < 0x80) {
if (unlikely)
_emitByte(0x2e);
_emitByte(0x75);
_emitByte(offset);
} else {
offset -= 4;
if (unlikely)
_emitByte(0x2e);
_emitByte(0x0f);
_emitByte(0x85);
for (int i = 0; i < 4; i++) {
_emitByte(offset & 0xff);
offset >>= 8;
}
}
}
virtual void _emitAttrGuard(int argnum, int offset, int64_t value, int npops, X86::ConditionCode slowpath_condition) {
assert(slowpath_condition == X86::COND_EQUAL || slowpath_condition == X86::COND_NOT_EQUAL && "not sure if the cmp operands are in the right order");
assert(argnum <= X86::NUM_ARG_REGS);
int argreg = convertArgnum(argnum);
if (value < (-1l << 31) || value >= (1l << 31)) {
//assert(0 && "can use r10 or r11");
int cmpreg = 5;
assert(argreg != cmpreg);
_emitPush(cmpreg);
_emitMoveImm64(cmpreg, value);
_emitAttrCmp(argreg, offset, cmpreg);
_emitPop(cmpreg);
} else {
_emitAttrCmpImm(argreg, offset, value);
}
this->pops_required = std::max(this->pops_required, npops);
_emitJmpCond(end_addr - X86::BYTES_PER_POP * npops, slowpath_condition, true);
}