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| author | Marek Polacek <polacek@redhat.com> | 2015-09-30 09:24:02 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2015-09-30 09:24:02 +0000 |
| commit | 6ea2f74cf9dbee7a3e41d4c2bd3757a2ea303b8e (patch) | |
| tree | d3500a983497c0bd0167a8f97529626c0c3a2ed2 /gcc/tree-ssa-tail-merge.c | |
| parent | ae15100c9197195f26541c199aa4f6c75d36eb13 (diff) | |
| download | gcc-6ea2f74cf9dbee7a3e41d4c2bd3757a2ea303b8e.zip gcc-6ea2f74cf9dbee7a3e41d4c2bd3757a2ea303b8e.tar.gz gcc-6ea2f74cf9dbee7a3e41d4c2bd3757a2ea303b8e.tar.bz2 | |
re PR tree-optimization/67690 (wrong code with -O2 on x86_64/Linux)
PR tree-optimization/67690
* tree-ssa-ifcombine.c (pass_tree_ifcombine::execute): Call
reset_flow_sensitive_info_in_bb.
* tree-ssa-tail-merge.c (replace_block_by): Likewise.
* tree-ssanames.c: Include "gimple-iterator.h".
(reset_flow_sensitive_info_in_bb): New function.
* tree-ssanames.h (reset_flow_sensitive_info_in_bb): Declare.
* gcc.dg/torture/pr67690.c: New test.
From-SVN: r228284
Diffstat (limited to 'gcc/tree-ssa-tail-merge.c')
| -rw-r--r-- | gcc/tree-ssa-tail-merge.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-ssa-tail-merge.c b/gcc/tree-ssa-tail-merge.c index 0ce59e8..487961e 100644 --- a/gcc/tree-ssa-tail-merge.c +++ b/gcc/tree-ssa-tail-merge.c @@ -1534,6 +1534,10 @@ replace_block_by (basic_block bb1, basic_block bb2) e2->probability = GCOV_COMPUTE_SCALE (e2->count, out_sum); } + /* Clear range info from all stmts in BB2 -- this transformation + could make them out of date. */ + reset_flow_sensitive_info_in_bb (bb2); + /* Do updates that use bb1, before deleting bb1. */ release_last_vdef (bb1); same_succ_flush_bb (bb1); |