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Fix PHI elimination: mark right PHI as used, too.

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Mike Pall 2010-04-28 22:00:40 +02:00
parent 28cfccf748
commit f28a42c923
1 changed files with 5 additions and 1 deletions
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6
src/lj_opt_loop.c
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@ -133,7 +133,11 @@ static void loop_emit_phi(jit_State *J, IRRef1 *subst, IRRef1 *phi, IRRef nphi)
while (!irref_isk(ref) && ref != subst[ref]) { while (!irref_isk(ref) && ref != subst[ref]) {
IRIns *ir = IR(ref); IRIns *ir = IR(ref);
irt_clearmark(ir->t); /* Unmark potential uses, too. */ irt_clearmark(ir->t); /* Unmark potential uses, too. */
if (irt_isphi(ir->t) || irt_ispri(ir->t)) if (irt_isphi(ir->t)) {
irt_clearmark(IR(subst[ref])->t);
break;
}
if (irt_ispri(ir->t))
break; break;
irt_setphi(ir->t); irt_setphi(ir->t);
if (nphi >= LJ_MAX_PHI) if (nphi >= LJ_MAX_PHI)