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| author | Victor Kaplansky <victork@il.ibm.com> | 2006-08-07 11:28:31 +0000 |
|---|---|---|
| committer | Victor Kaplansky <victork@gcc.gnu.org> | 2006-08-07 11:28:31 +0000 |
| commit | 4192d75b251845c010da43f83c5ff6c815159dd4 (patch) | |
| tree | 2a815da8cd510d65ff313810b7ecb7deddfa81f0 /gcc/tree-vect-analyze.c | |
| parent | 105d82a07bbdfcaaf4440dcaa33724d7dfefb97c (diff) | |
| download | gcc-4192d75b251845c010da43f83c5ff6c815159dd4.zip gcc-4192d75b251845c010da43f83c5ff6c815159dd4.tar.gz gcc-4192d75b251845c010da43f83c5ff6c815159dd4.tar.bz2 | |
re PR tree-optimization/26969 (ICE with -O1 -funswitch-loops -ftree-vectorize)
ChangeLog
PR tree-optimization/26969
* tree-vect-analyze.c (vect_analyze_loop_form): Add check of latch
witch an empty list of PHIs.
testsuite/Changelog:
PR tree-optimizations/26969
* gcc.dg/vect/vect.exp: Compile tests prefixed with
"unswitch-loops" with -funswitch-loops.
* gcc.dg/vect/unswitch-loops-pr26969.c: New test.
From-SVN: r115995
Diffstat (limited to 'gcc/tree-vect-analyze.c')
| -rw-r--r-- | gcc/tree-vect-analyze.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree-vect-analyze.c b/gcc/tree-vect-analyze.c index 9df8ba2..f247cd9 100644 --- a/gcc/tree-vect-analyze.c +++ b/gcc/tree-vect-analyze.c @@ -1889,7 +1889,8 @@ vect_analyze_loop_form (struct loop *loop) that the loop is represented as a do-while (with a proper if-guard before the loop if needed), where the loop header contains all the executable statements, and the latch is empty. */ - if (!empty_block_p (loop->latch)) + if (!empty_block_p (loop->latch) + || phi_nodes (loop->latch)) { if (vect_print_dump_info (REPORT_BAD_FORM_LOOPS)) fprintf (vect_dump, "not vectorized: unexpected loop form."); |