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FFI: Cleanup/fix 64 bit arithmetic in assembler backend.

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This commit is contained in:
Mike Pall
2011-10-22 02:02:51 +02:00
parent 2e5c0870bc
commit fee957b22d
2 changed files with 31 additions and 33 deletions
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18
src/lj_asm_x86.h
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@@ -2160,19 +2160,25 @@ static void asm_hiop(ASMState *as, IRIns *ir)
if (!usehi) return; /* Skip unused hiword op for all remaining ops. */
switch ((ir-1)->o) {
case IR_ADD:
asm_intarith(as, ir, uselo ? XOg_ADC : XOg_ADD);
as->flagmcp = NULL;
as->curins--;
asm_intarith(as, ir, XOg_ADC);
asm_intarith(as, ir-1, XOg_ADD);
break;
case IR_SUB:
asm_intarith(as, ir, uselo ? XOg_SBB : XOg_SUB);
as->flagmcp = NULL;
as->curins--;
asm_intarith(as, ir, XOg_SBB);
asm_intarith(as, ir-1, XOg_SUB);
break;
case IR_NEG: {
Reg dest = ra_dest(as, ir, RSET_GPR);
emit_rr(as, XO_GROUP3, XOg_NEG, dest);
if (uselo) {
emit_i8(as, 0);
emit_rr(as, XO_ARITHi8, XOg_ADC, dest);
}
emit_i8(as, 0);
emit_rr(as, XO_ARITHi8, XOg_ADC, dest);
ra_left(as, dest, ir->op1);
as->curins--;
asm_neg_not(as, ir-1, XOg_NEG);
break;
}
case IR_CALLN: