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| author | Richard Guenther <rguenther@suse.de> | 2012-10-29 14:25:22 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-10-29 14:25:22 +0000 |
| commit | 9dcbb3806d28c26b27137f6d3b8538a011b8960e (patch) | |
| tree | cbaaa6dbd01c991e9f8bb98fafc21b063fcdcc02 /gcc/tracer.c | |
| parent | 5f41168186604d1c47d14a601a2c0f0f8f025082 (diff) | |
| download | gcc-9dcbb3806d28c26b27137f6d3b8538a011b8960e.zip gcc-9dcbb3806d28c26b27137f6d3b8538a011b8960e.tar.gz gcc-9dcbb3806d28c26b27137f6d3b8538a011b8960e.tar.bz2 | |
re PR middle-end/53695 (ICE: in dfs_enumerate_from, at cfganal.c:1221 with -O2 -ftracer and labels/gotos)
2012-10-29 Richard Guenther <rguenther@suse.de>
PR middle-end/53695
* tracer.c (tracer): Fixup loop structure.
* cfgloopmanip.c (force_single_succ_latches): Add assert.
(fix_loop_structure): Re-compute loop latches and disambiguate
loops with multiple latches if required.
* gcc.dg/torture/pr53695.c: New testcase.
From-SVN: r192943
Diffstat (limited to 'gcc/tracer.c')
| -rw-r--r-- | gcc/tracer.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/tracer.c b/gcc/tracer.c index 9b1d724..7264ad2 100644 --- a/gcc/tracer.c +++ b/gcc/tracer.c @@ -379,7 +379,12 @@ tracer (void) /* Trace formation is done on the fly inside tail_duplicate */ changed = tail_duplicate (); if (changed) - free_dominance_info (CDI_DOMINATORS); + { + free_dominance_info (CDI_DOMINATORS); + calculate_dominance_info (CDI_DOMINATORS); + if (current_loops) + fix_loop_structure (NULL); + } if (dump_file) brief_dump_cfg (dump_file, dump_flags); |