diff options
| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-10-23 19:56:19 +0100 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@linaro.org> | 2017-10-23 19:56:19 +0100 |
| commit | 7bef5b82e4109778a0988d20e19e1ed29dadd835 (patch) | |
| tree | f5c594a5206e2b23c95741c1338fc1d11acffd25 /gcc/cfgloop.c | |
| parent | 246229fdf9230ca040aa990a3fbb42698f30ae5f (diff) | |
| parent | b11bf8d85f574c56cab353544b50396c18ab9b93 (diff) | |
| download | gcc-7bef5b82e4109778a0988d20e19e1ed29dadd835.tar.gz | |
Merge trunk into sve
Diffstat (limited to 'gcc/cfgloop.c')
| -rw-r--r-- | gcc/cfgloop.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/cfgloop.c b/gcc/cfgloop.c index 6911426787b..c3bd9c05013 100644 --- a/gcc/cfgloop.c +++ b/gcc/cfgloop.c @@ -1713,12 +1713,19 @@ loop_preheader_edge (const struct loop *loop) edge e; edge_iterator ei; - gcc_assert (loops_state_satisfies_p (LOOPS_HAVE_PREHEADERS)); + gcc_assert (loops_state_satisfies_p (LOOPS_HAVE_PREHEADERS) + && ! loops_state_satisfies_p (LOOPS_MAY_HAVE_MULTIPLE_LATCHES)); FOR_EACH_EDGE (e, ei, loop->header->preds) if (e->src != loop->latch) break; + if (! e) + { + gcc_assert (! loop_outer (loop)); + return single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun)); + } + return e; } |