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| author | Richard Guenther <rguenther@suse.de> | 2011-07-29 09:54:23 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-07-29 09:54:23 +0000 |
| commit | 64fb0d3a7878671e4df0b58ab3aa00e4e860e62e (patch) | |
| tree | 41d80cf5eccf0548e09244ad15e7faa13f77bb92 /gcc | |
| parent | 6130646b8811ec5af4d58bd08fee7ebd8ffbc973 (diff) | |
| download | gcc-64fb0d3a7878671e4df0b58ab3aa00e4e860e62e.zip gcc-64fb0d3a7878671e4df0b58ab3aa00e4e860e62e.tar.gz gcc-64fb0d3a7878671e4df0b58ab3aa00e4e860e62e.tar.bz2 | |
re PR middle-end/49893 (-O3 generates wrong code for volatile)
2011-07-29 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49893
* tree-predcom.c (suitable_reference_p): Volatile references
are not suitable.
From-SVN: r176921
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-predcom.c | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2d12436..5653050 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-07-29 Richard Guenther <rguenther@suse.de> + + PR tree-optimization/49893 + * tree-predcom.c (suitable_reference_p): Volatile references + are not suitable. + 2011-07-29 Georg-Johann Lay <avr@gjlay.de> PR target/49313 diff --git a/gcc/tree-predcom.c b/gcc/tree-predcom.c index 94b0512..ac23147 100644 --- a/gcc/tree-predcom.c +++ b/gcc/tree-predcom.c @@ -598,6 +598,7 @@ suitable_reference_p (struct data_reference *a, enum ref_step_type *ref_step) tree ref = DR_REF (a), step = DR_STEP (a); if (!step + || TREE_THIS_VOLATILE (ref) || !is_gimple_reg_type (TREE_TYPE (ref)) || tree_could_throw_p (ref)) return false; |