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FFI: Limit snapshot optimization for cdata comparisons.

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This commit is contained in:
Mike Pall 2011-08-07 21:53:43 +02:00
parent 4008b351f4
commit d9b518874d
1 changed files with 2 additions and 1 deletions
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src/lj_crecord.c
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@ -1003,7 +1003,8 @@ void LJ_FASTCALL recff_cdata_arith(jit_State *J, RecordFFData *rd)
(tr = crec_arith_ptr(J, sp, s, (MMS)rd->data))) { (tr = crec_arith_ptr(J, sp, s, (MMS)rd->data))) {
J->base[0] = tr; J->base[0] = tr;
/* Fixup cdata comparisons, too. Avoids some cdata escapes. */ /* Fixup cdata comparisons, too. Avoids some cdata escapes. */
if (J->postproc == LJ_POST_FIXGUARD && frame_iscont(J->L->base-1)) { if (J->postproc == LJ_POST_FIXGUARD && frame_iscont(J->L->base-1) &&
!irt_isguard(J->guardemit)) {
const BCIns *pc = frame_contpc(J->L->base-1) - 1; const BCIns *pc = frame_contpc(J->L->base-1) - 1;
if (bc_op(*pc) <= BC_ISNEP) { if (bc_op(*pc) <= BC_ISNEP) {
setframe_pc(&J2G(J)->tmptv, pc); setframe_pc(&J2G(J)->tmptv, pc);