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Preserve snapshot #0 PC for all traces (potential gcstep exit).

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Mike Pall 2012-09-01 00:58:00 +02:00
parent d3699997fa
commit a6d636c508
1 changed files with 1 additions and 2 deletions
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3
src/lj_snap.c
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@ -147,8 +147,7 @@ void lj_snap_add(jit_State *J)
/* 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 (J->mergesnap ? !irt_isguard(J->guardemit) :
(nsnap > 0 && J->cur.snap[nsnap-1].ref == J->cur.nins)) { (nsnap > 0 && J->cur.snap[nsnap-1].ref == J->cur.nins)) {
if (nsnap == 1 && J->parent == 0) { if (nsnap == 1) { /* But preserve snap #0 PC. */
/* But preserve snap #0 PC for root traces. */
emitir_raw(IRT(IR_NOP, IRT_NIL), 0, 0); emitir_raw(IRT(IR_NOP, IRT_NIL), 0, 0);
goto nomerge; goto nomerge;
} }