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| author | Richard Biener <rguenther@suse.de> | 2017-09-12 14:15:37 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-09-12 14:15:37 +0000 |
| commit | 29545149bf8ca8c89a9a7d32fe7fdb8e9294759c (patch) | |
| tree | de78c3ff6d003d92a966ab0d77d691cb438bed65 /gcc/tree-ssa-pre.c | |
| parent | d681026df10348e1fbede89055cbd395dc66cdd8 (diff) | |
| download | gcc-29545149bf8ca8c89a9a7d32fe7fdb8e9294759c.zip gcc-29545149bf8ca8c89a9a7d32fe7fdb8e9294759c.tar.gz gcc-29545149bf8ca8c89a9a7d32fe7fdb8e9294759c.tar.bz2 | |
re PR tree-optimization/82157 (ICE on valid code at -O2 and -O3: cannot update SSA form)
2017-09-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/82157
* tree-ssa-pre.c (remove_dead_inserted_code): Do not remove
stmts with side-effects.
* gcc.dg/torture/pr82157.c: New testcase.
From-SVN: r252020
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 6f9fac5..364272d 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -4913,6 +4913,8 @@ remove_dead_inserted_code (void) continue; gimple *t = SSA_NAME_DEF_STMT (def); + if (gimple_has_side_effects (t)) + continue; /* Add uses to the worklist. */ ssa_op_iter iter; |