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| author | Richard Biener <rguenther@suse.de> | 2012-10-25 11:16:12 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-10-25 11:16:12 +0000 |
| commit | 9c370032cf787513298297be04ddf8b02ac2f336 (patch) | |
| tree | 8de88ebb51b852c880286c7f797faeedc6b31474 /gcc/tree-ssa-pre.c | |
| parent | 3a969a32ff392ed49a60050a8b94d1dfdc05a5f3 (diff) | |
| download | gcc-9c370032cf787513298297be04ddf8b02ac2f336.zip gcc-9c370032cf787513298297be04ddf8b02ac2f336.tar.gz gcc-9c370032cf787513298297be04ddf8b02ac2f336.tar.bz2 | |
re PR target/54902 (, ICE (segfault) building on arm-linux-gnueabi)
2012-10-25 Richard Biener <rguenther@suse.de>
PR tree-optimization/54902
* tree-ssa-pre.c (fini_eliminate): Return TODO.
(do_pre): Adjust.
(execute_fre): Likewise.
* tree-ssa-tailmerge.c (tail_merge_optimize): Delete unreachable
blocks before computing dominators.
* g++.dg/torture/pr54902.C: New testcase.
From-SVN: r192804
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 548c110..bc3381bd 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -4448,7 +4448,7 @@ eliminate (void) /* Perform CFG cleanups made necessary by elimination. */ -static void +static unsigned fini_eliminate (void) { bool do_eh_cleanup = !bitmap_empty_p (need_eh_cleanup); @@ -4464,7 +4464,8 @@ fini_eliminate (void) BITMAP_FREE (need_ab_cleanup); if (do_eh_cleanup || do_ab_cleanup) - cleanup_tree_cfg (); + return TODO_cleanup_cfg; + return 0; } /* Borrow a bit of tree-ssa-dce.c for the moment. @@ -4728,7 +4729,7 @@ do_pre (void) scev_finalize (); fini_pre (); - fini_eliminate (); + todo |= fini_eliminate (); loop_optimizer_finalize (); /* TODO: tail_merge_optimize may merge all predecessors of a block, in which @@ -4794,7 +4795,7 @@ execute_fre (void) /* Remove all the redundant expressions. */ todo |= eliminate (); - fini_eliminate (); + todo |= fini_eliminate (); free_scc_vn (); |