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| author | Tom de Vries <tom@codesourcery.com> | 2016-01-11 09:38:28 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2016-01-11 09:38:28 +0000 |
| commit | d95167eef4d15a5099874990fcca5e5a19fb8b38 (patch) | |
| tree | b22a7438f476e5f3f48613ffa0779ecb9f46444b /gcc/tree-parloops.c | |
| parent | 4f6403a8ce2648cb785789f444b5bbaccd415976 (diff) | |
| download | gcc-d95167eef4d15a5099874990fcca5e5a19fb8b38.zip gcc-d95167eef4d15a5099874990fcca5e5a19fb8b38.tar.gz gcc-d95167eef4d15a5099874990fcca5e5a19fb8b38.tar.bz2 | |
Don't allow latch with phi in try_transform_to_exit_first_loop_alt
2016-01-11 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/69109
* tree-parloops.c (try_transform_to_exit_first_loop_alt): Don't allow
latch with phi.
* gcc.dg/autopar/pr69109-2.c: New test.
* gcc.dg/autopar/pr69109.c: New test.
From-SVN: r232212
Diffstat (limited to 'gcc/tree-parloops.c')
| -rw-r--r-- | gcc/tree-parloops.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-parloops.c b/gcc/tree-parloops.c index d683704..5afaaf8 100644 --- a/gcc/tree-parloops.c +++ b/gcc/tree-parloops.c @@ -1769,6 +1769,10 @@ try_transform_to_exit_first_loop_alt (struct loop *loop, if (!gimple_seq_nondebug_singleton_p (bb_seq (loop->latch))) return false; + /* Check whether the latch contains no phis. */ + if (phi_nodes (loop->latch) != NULL) + return false; + /* Check whether the latch contains the loop iv increment. */ edge back = single_succ_edge (loop->latch); edge exit = single_dom_exit (loop); |