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| author | Jakub Jelinek <jakub@redhat.com> | 2011-12-09 21:50:40 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-12-09 21:50:40 +0100 |
| commit | 6d1c2bd3ae36584af0b6d288569c845e86600bda (patch) | |
| tree | 22a69ae33ba4ffc6a1ac60035349486476a0bdd2 /gcc/tree-eh.c | |
| parent | d179d1790729f3be184bab0cf5c4d9e5380f0814 (diff) | |
| download | gcc-6d1c2bd3ae36584af0b6d288569c845e86600bda.zip gcc-6d1c2bd3ae36584af0b6d288569c845e86600bda.tar.gz gcc-6d1c2bd3ae36584af0b6d288569c845e86600bda.tar.bz2 | |
re PR tree-optimization/51117 (rev.181172 causes glibc build failure)
PR tree-optimization/51117
* tree-eh.c (optimize_clobbers): Don't remove just one
clobber, but all consecutive clobbers before RESX.
Use gimple_clobber_p predicate.
From-SVN: r182177
Diffstat (limited to 'gcc/tree-eh.c')
| -rw-r--r-- | gcc/tree-eh.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c index 7fc850a..7ab8a90 100644 --- a/gcc/tree-eh.c +++ b/gcc/tree-eh.c @@ -3180,17 +3180,13 @@ static void optimize_clobbers (basic_block bb) { gimple_stmt_iterator gsi = gsi_last_bb (bb); - for (gsi_prev (&gsi); !gsi_end_p (gsi);) + for (gsi_prev (&gsi); !gsi_end_p (gsi); gsi_prev (&gsi)) { gimple stmt = gsi_stmt (gsi); if (is_gimple_debug (stmt)) - { - gsi_prev (&gsi); - continue; - } - if (!gimple_assign_single_p (stmt) - || TREE_CODE (gimple_assign_lhs (stmt)) == SSA_NAME - || !TREE_CLOBBER_P (gimple_assign_rhs1 (stmt))) + continue; + if (!gimple_clobber_p (stmt) + || TREE_CODE (gimple_assign_lhs (stmt)) == SSA_NAME) return; unlink_stmt_vdef (stmt); gsi_remove (&gsi, true); |