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Fix FOLD rule for strength reduction of widening.

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Reported by Matthew Burk.
This commit is contained in:
Mike Pall 2017-11-08 12:53:05 +01:00
parent 0c0e7b168e
commit 9f0caad0e4
1 changed files with 1 additions and 1 deletions
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2
src/lj_opt_fold.c
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@ -1052,7 +1052,7 @@ LJFOLDF(simplify_conv_sext)
if (ref == J->scev.idx) { if (ref == J->scev.idx) {
IRRef lo = J->scev.dir ? J->scev.start : J->scev.stop; IRRef lo = J->scev.dir ? J->scev.start : J->scev.stop;
lua_assert(irt_isint(J->scev.t)); lua_assert(irt_isint(J->scev.t));
if (lo && IR(lo)->i + ofs >= 0) { if (lo && IR(lo)->o == IR_KINT && IR(lo)->i + ofs >= 0) {
ok_reduce: ok_reduce:
#if LJ_TARGET_X64 #if LJ_TARGET_X64
/* Eliminate widening. All 32 bit ops do an implicit zero-extension. */ /* Eliminate widening. All 32 bit ops do an implicit zero-extension. */