diff options
| author | Eric Botcazou <ebotcazou@adacore.com> | 2017-11-27 11:56:36 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2017-11-27 11:56:36 +0000 |
| commit | ff27462edc398ca82e86c8c7f13d9fab498ba5c1 (patch) | |
| tree | 08222828f4dd3f24e1e5561f204474cdf8789d12 /gcc/loop-unroll.c | |
| parent | 39335d1486c5f39182bd0cca6af52a49386319cb (diff) | |
cfgloop.h (struct loop): Document usage of USHRT_MAX for unroll.
* cfgloop.h (struct loop): Document usage of USHRT_MAX for unroll.
* loop-unroll.c (decide_unroll_constant_iterations): Implement it.
(decide_unroll_runtime_iterations): Likewise.
(decide_unroll_stupid): Likewise.
From-SVN: r255165
Diffstat (limited to 'gcc/loop-unroll.c')
| -rw-r--r-- | gcc/loop-unroll.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/loop-unroll.c b/gcc/loop-unroll.c index bbba35fbff1..0fdecd7fde2 100644 --- a/gcc/loop-unroll.c +++ b/gcc/loop-unroll.c @@ -395,7 +395,7 @@ decide_unroll_constant_iterations (struct loop *loop, int flags) } /* Check for an explicit unrolling factor. */ - if (loop->unroll) + if (loop->unroll > 0 && loop->unroll < USHRT_MAX) { /* However we cannot unroll completely at the RTL level a loop with constant number of iterations; it should have been peeled instead. */ @@ -693,7 +693,7 @@ decide_unroll_runtime_iterations (struct loop *loop, int flags) if (targetm.loop_unroll_adjust) nunroll = targetm.loop_unroll_adjust (nunroll, loop); - if (loop->unroll) + if (loop->unroll > 0 && loop->unroll < USHRT_MAX) nunroll = loop->unroll; /* Skip big loops. */ @@ -1177,7 +1177,7 @@ decide_unroll_stupid (struct loop *loop, int flags) if (targetm.loop_unroll_adjust) nunroll = targetm.loop_unroll_adjust (nunroll, loop); - if (loop->unroll) + if (loop->unroll > 0 && loop->unroll < USHRT_MAX) nunroll = loop->unroll; /* Skip big loops. */ |