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| author | Marc Glisse <marc.glisse@inria.fr> | 2019-05-03 15:41:36 +0200 |
|---|---|---|
| committer | Marc Glisse <glisse@gcc.gnu.org> | 2019-05-03 13:41:36 +0000 |
| commit | 051ef623d6e332a6199bbf4e6c66e53925cac825 (patch) | |
| tree | d941fdac3fa148b71b8548aeb58c541a46101acb /gcc/tree-loop-distribution.c | |
| parent | b119c05542a9574a1c27f9bba63efbafc12b248b (diff) | |
| download | gcc-051ef623d6e332a6199bbf4e6c66e53925cac825.zip gcc-051ef623d6e332a6199bbf4e6c66e53925cac825.tar.gz gcc-051ef623d6e332a6199bbf4e6c66e53925cac825.tar.bz2 | |
Let ldist ignore clobbers
2019-05-03 Marc Glisse <marc.glisse@inria.fr>
PR tree-optimization/90269
gcc/
* tree-loop-distribution.c (find_seed_stmts_for_distribution):
Ignore clobbers.
gcc/testsuite/
* g++.dg/tree-ssa/ldist-1.C: New file.
From-SVN: r270852
Diffstat (limited to 'gcc/tree-loop-distribution.c')
| -rw-r--r-- | gcc/tree-loop-distribution.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c index 8959f52..3d8f13c 100644 --- a/gcc/tree-loop-distribution.c +++ b/gcc/tree-loop-distribution.c @@ -3040,6 +3040,10 @@ find_seed_stmts_for_distribution (struct loop *loop, vec<gimple *> *work_list) { gimple *stmt = gsi_stmt (gsi); + /* Ignore clobbers, they do not have true side effects. */ + if (gimple_clobber_p (stmt)) + continue; + /* If there is a stmt with side-effects bail out - we cannot and should not distribute this loop. */ if (gimple_has_side_effects (stmt)) |