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| author | Jim Wilson <jim.wilson@linaro.org> | 2016-11-10 15:20:59 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 2016-11-10 07:20:59 -0800 |
| commit | dd18c8c32a865a5432338d1959afefa42bebb718 (patch) | |
| tree | 38eb3a996aa140e8305bd762262d03601489a352 /gcc | |
| parent | b4c3a85be96585374bf95c981ba2f602667cf5b7 (diff) | |
| download | gcc-dd18c8c32a865a5432338d1959afefa42bebb718.zip gcc-dd18c8c32a865a5432338d1959afefa42bebb718.tar.gz gcc-dd18c8c32a865a5432338d1959afefa42bebb718.tar.bz2 | |
Fix loop distribution bug with merging edges that creates too many edges.
gcc/
* tree-loop-distribution.c (pg_add_dependence_edges): Return 2 if
this_dir is 2. Check for this_dir non-zero before dir != this_dir
check.
From-SVN: r242038
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-loop-distribution.c | 6 |
2 files changed, 10 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9e93f79..1e13f59 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2016-11-10 Jim Wilson <jim.wilson@linaro.org> + + * tree-loop-distribution.c (pg_add_dependence_edges): Return 2 if + this_dir is 2. Check for this_dir non-zero before dir != this_dir + check. + 2016-11-10 Jakub Jelinek <jakub@redhat.com> * omp-low.c (lower_omp_target): Fix up argument to is_reference. diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c index 5580f28..902cf30 100644 --- a/gcc/tree-loop-distribution.c +++ b/gcc/tree-loop-distribution.c @@ -1408,9 +1408,11 @@ pg_add_dependence_edges (struct graph *rdg, vec<loop_p> loops, int dir, else this_dir = 0; free_dependence_relation (ddr); - if (dir == 0) + if (this_dir == 2) + return 2; + else if (dir == 0) dir = this_dir; - else if (dir != this_dir) + else if (this_dir != 0 && dir != this_dir) return 2; /* Shuffle "back" dr1. */ dr1 = saved_dr1; |