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| author | Richard Guenther <rguenther@suse.de> | 2012-04-24 14:41:49 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-04-24 14:41:49 +0000 |
| commit | 46b380a23b6504fe3c5747673e8897debc42a633 (patch) | |
| tree | 4b9ea22a269724c869170efef0a0f07ed2c07444 /gcc/tree-ssa-pre.c | |
| parent | 05232ff6d394e04a2d78c718363d5f910d796f04 (diff) | |
| download | gcc-46b380a23b6504fe3c5747673e8897debc42a633.zip gcc-46b380a23b6504fe3c5747673e8897debc42a633.tar.gz gcc-46b380a23b6504fe3c5747673e8897debc42a633.tar.bz2 | |
re PR tree-optimization/53085 (writes to volatile struct members is missing)
2012-04-24 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53085
* tree-ssa-pre.c (eliminate): Do not eliminate volatile redundant
stores.
* g++.dg/torture/pr53085.C: New testcase.
From-SVN: r186764
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 5e6f570..e3e55ef 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -4409,6 +4409,7 @@ eliminate (void) has the same value number as its rhs. If so, the store is dead. */ else if (gimple_assign_single_p (stmt) + && !gimple_has_volatile_ops (stmt) && !is_gimple_reg (gimple_assign_lhs (stmt)) && (TREE_CODE (rhs) == SSA_NAME || is_gimple_min_invariant (rhs))) |