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| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-03-16 15:45:09 +0000 |
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| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-03-16 15:45:09 +0000 |
| commit | 250807797b9faaf6acfb083e2ef17d7fca879447 (patch) | |
| tree | 31a2feec16994e9a97405adbceee111bf59d80b5 /gcc/tree-ssa-loop-niter.c | |
| parent | 7290f0904907f37ad323a13d9426e07b449513dc (diff) | |
| download | gcc-250807797b9faaf6acfb083e2ef17d7fca879447.tar.gz | |
2008-03-16 Richard Guenther <rguenther@suse.de>
PR middle-end/35607
* tree-ssa-loop-niter.c (expand_simple_operations): Do not
expand TREE_INVARIANT operations that are not gimple invariant.
* gcc.c-torture/compile/pr35607.c: New testcase.
* gcc.dg/tree-ssa/loop-19.c: Use -O2 to avoid vectorization.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@133273 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 40e7051c265..0696342bd1b 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -1436,6 +1436,10 @@ expand_simple_operations (tree expr) return expr; e = GIMPLE_STMT_OPERAND (stmt, 1); + /* Do not expand random invariants. */ + if (TREE_INVARIANT (e) + && !is_gimple_min_invariant (e)) + return expr; if (/* Casts are simple. */ TREE_CODE (e) != NOP_EXPR && TREE_CODE (e) != CONVERT_EXPR |