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Add IR_XSTORE.

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This commit is contained in:
Mike Pall
2010-12-06 01:48:19 +01:00
parent 281f426d60
commit db3d16bfd7
5 changed files with 57 additions and 16 deletions
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13
src/lj_asm.c
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@@ -1357,7 +1357,8 @@ static Reg asm_fuseload(ASMState *as, IRRef ref, RegSet allow)
/* Generic fusion is only ok for 32 bit operand (but see asm_comp).
** Fusing unaligned memory operands is ok on x86 (except for SIMD types).
*/
if (irt_isint(ir->t) || irt_isaddr(ir->t)) {
if ((irt_isint(ir->t) || irt_isaddr(ir->t)) &&
noconflict(as, ref, IR_XSTORE)) {
asm_fusexref(as, IR(ir->op1), xallow);
return RID_MRM;
}
@@ -1978,7 +1979,7 @@ static void asm_fxload(ASMState *as, IRIns *ir)
emit_mrm(as, xo, dest, RID_MRM);
}
static void asm_fstore(ASMState *as, IRIns *ir)
static void asm_fxstore(ASMState *as, IRIns *ir)
{
RegSet allow = RSET_GPR;
Reg src = RID_NONE;
@@ -1991,7 +1992,11 @@ static void asm_fstore(ASMState *as, IRIns *ir)
src = ra_alloc1(as, ir->op2, allow8);
rset_clear(allow, src);
}
asm_fusefref(as, IR(ir->op1), allow);
if (ir->o == IR_FSTORE)
asm_fusefref(as, IR(ir->op1), allow);
else
asm_fusexref(as, IR(ir->op1), allow);
/* ir->op2 is ignored -- unaligned stores are ok on x86. */
if (ra_hasreg(src)) {
x86Op xo;
switch (irt_type(ir->t)) {
@@ -3467,7 +3472,7 @@ static void asm_ir(ASMState *as, IRIns *ir)
case IR_SLOAD: asm_sload(as, ir); break;
case IR_ASTORE: case IR_HSTORE: case IR_USTORE: asm_ahustore(as, ir); break;
case IR_FSTORE: asm_fstore(as, ir); break;
case IR_FSTORE: case IR_XSTORE: asm_fxstore(as, ir); break;
/* Allocations. */
case IR_SNEW: asm_snew(as, ir); break;