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| author | Jeff Law <law@redhat.com> | 2015-12-03 08:40:08 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2015-12-03 08:40:08 -0700 |
| commit | 46bd784bfb29e94841b7d2702277d77445a7a47f (patch) | |
| tree | 9f82d6adb1a1a1767cf5c5002c5f241448ca67b7 /gcc/loop-iv.c | |
| parent | a54a5997d9d4a981893984a6cc406f4865be7313 (diff) | |
| download | gcc-46bd784bfb29e94841b7d2702277d77445a7a47f.zip gcc-46bd784bfb29e94841b7d2702277d77445a7a47f.tar.gz gcc-46bd784bfb29e94841b7d2702277d77445a7a47f.tar.bz2 | |
[PR tree-optimization/68599] Avoid over-zealous optimization with -funsafe-loop-optimizations
PR tree-optimization/68599
* loop-init.c (rtl_loop_init): Set LOOPS_HAVE_RECORDED_EXITS
in call to loop_optimizer_init.
* loop-iv.c (get_simple_loop_desc): Only allow unsafe loop
optimization to drop the assumptions/infinite notations if
the loop has a single exit.
From-SVN: r231231
Diffstat (limited to 'gcc/loop-iv.c')
| -rw-r--r-- | gcc/loop-iv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index c7d5164..dfa3ca3 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -3054,7 +3054,7 @@ get_simple_loop_desc (struct loop *loop) } } - if (flag_unsafe_loop_optimizations) + if (flag_unsafe_loop_optimizations && single_exit (loop)) { desc->assumptions = NULL_RTX; desc->infinite = NULL_RTX; |