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| author | Richard Biener <rguenther@suse.de> | 2016-02-02 12:39:36 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-02-02 12:39:36 +0000 |
| commit | 9dc03c974ffc1fa29217cf0fb83b4d662a6e7a93 (patch) | |
| tree | 6f92c403a04e103eba6de4e45be4c89bd271849d /gcc/tree-ssa-math-opts.c | |
| parent | 2d4dc2233b4a3aef3edeb23d6acaaa8a5327c137 (diff) | |
| download | gcc-9dc03c974ffc1fa29217cf0fb83b4d662a6e7a93.zip gcc-9dc03c974ffc1fa29217cf0fb83b4d662a6e7a93.tar.gz gcc-9dc03c974ffc1fa29217cf0fb83b4d662a6e7a93.tar.bz2 | |
re PR tree-optimization/69606 (wrong code at -Os and above on x86_64-linux-gnu)
2016-02-02 Richard Biener <rguenther@suse.de>
PR tree-optimization/69606
* tree-ssa-math-opts.c (bswap_replace): Clear flow sensitive
info on the result before moving a stmt.
* gcc.dg/torture/pr69606.c: New testcase.
From-SVN: r233069
Diffstat (limited to 'gcc/tree-ssa-math-opts.c')
| -rw-r--r-- | gcc/tree-ssa-math-opts.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c index abd77e7..3aa4a07 100644 --- a/gcc/tree-ssa-math-opts.c +++ b/gcc/tree-ssa-math-opts.c @@ -2622,6 +2622,8 @@ bswap_replace (gimple *cur_stmt, gimple *src_stmt, tree fndecl, /* Move cur_stmt just before one of the load of the original to ensure it has the same VUSE. See PR61517 for what could go wrong. */ + if (gimple_bb (cur_stmt) != gimple_bb (src_stmt)) + reset_flow_sensitive_info (gimple_assign_lhs (cur_stmt)); gsi_move_before (&gsi, &gsi_ins); gsi = gsi_for_stmt (cur_stmt); |