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FFI: Don't record test for bool result of call, if ignored.

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This commit is contained in:
Mike Pall 2012-05-08 18:57:20 +02:00
parent 886a450a3d
commit 7d3954036c
1 changed files with 3 additions and 1 deletions
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4
src/lj_crecord.c
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@ -902,7 +902,10 @@ static int crec_call(jit_State *J, RecordFFData *rd, GCcdata *cd)
func = emitir(IRT(IR_CARG, IRT_NIL), func,
lj_ir_kint(J, ctype_typeid(cts, ct)));
tr = emitir(IRT(IR_CALLXS, t), crec_call_args(J, rd, cts, ct), func);
J->needsnap = 1;
if (ctype_isbool(ctr->info)) {
if (frame_islua(J->L->base-1) && bc_b(frame_pc(J->L->base-1)[-1]) == 1)
return 1; /* Don't check result if ignored. */
crec_snap_caller(J);
lj_ir_set(J, IRTGI(IR_NE), tr, lj_ir_kint(J, 0));
J->postproc = LJ_POST_FIXGUARDSNAP;
@ -920,7 +923,6 @@ static int crec_call(jit_State *J, RecordFFData *rd, GCcdata *cd)
if (t == IRT_I64 || t == IRT_U64) lj_needsplit(J);
}
J->base[0] = tr;
J->needsnap = 1;
return 1;
}
return 0;