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| author | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2016-04-12 14:40:11 -0400 |
|---|---|---|
| committer | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2016-04-12 14:51:50 -0400 |
| commit | 1f4ff634187a9127ab160b2651c9decd80e82435 (patch) | |
| tree | e77976129d8ed6ad355f1bf4c2aae98fc635993e | |
| parent | 4cee19ea9f989dc4b54bea3e657ec239929bf4d8 (diff) | |
| download | roux-1f4ff634187a9127ab160b2651c9decd80e82435.tar.gz | |
subtle bug in liveness!
If on of the phis in a block A uses the result of another one when coming from B, we have to be careful!
| -rw-r--r-- | live.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/live.c b/live.c index 3265b3e..66c84e8 100644 --- a/live.c +++ b/live.c @@ -7,13 +7,13 @@ liveon(BSet *v, Blk *b, Blk *s) uint a; bscopy(v, s->in); - for (p=s->phi; p; p=p->link) { + for (p=s->phi; p; p=p->link) bsclr(v, p->to.val); + for (p=s->phi; p; p=p->link) for (a=0; a<p->narg; a++) if (p->blk[a] == b) if (rtype(p->arg[a]) == RTmp) bsset(v, p->arg[a].val); - } } static int |