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Always merge snapshots without instructions inbetween.

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Thanks to Vyacheslav Egorov.
This commit is contained in:
Mike Pall 2016-01-18 12:02:01 +01:00
parent 04d2806823
commit 39eddd3b96
1 changed files with 2 additions and 2 deletions
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4
src/lj_snap.c
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@ -145,8 +145,8 @@ void lj_snap_add(jit_State *J)
MSize nsnap = J->cur.nsnap; MSize nsnap = J->cur.nsnap;
MSize nsnapmap = J->cur.nsnapmap; MSize nsnapmap = J->cur.nsnapmap;
/* Merge if no ins. inbetween or if requested and no guard inbetween. */ /* Merge if no ins. inbetween or if requested and no guard inbetween. */
if (J->mergesnap ? !irt_isguard(J->guardemit) : if ((nsnap > 0 && J->cur.snap[nsnap-1].ref == J->cur.nins) ||
(nsnap > 0 && J->cur.snap[nsnap-1].ref == J->cur.nins)) { (J->mergesnap && !irt_isguard(J->guardemit))) {
if (nsnap == 1) { /* But preserve snap #0 PC. */ if (nsnap == 1) { /* But preserve snap #0 PC. */
emitir_raw(IRT(IR_NOP, IRT_NIL), 0, 0); emitir_raw(IRT(IR_NOP, IRT_NIL), 0, 0);
goto nomerge; goto nomerge;