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| author | Richard Biener <rguenther@suse.de> | 2013-01-29 10:40:24 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2013-01-29 10:40:24 +0000 |
| commit | 83ba4d6f2be5937e715f2638085906c06a9989ea (patch) | |
| tree | de87867db191833134dc4c1645b277f691390452 | |
| parent | 5893f1589ac718724167e06bce2759ea3339560f (diff) | |
| download | gcc-83ba4d6f2be5937e715f2638085906c06a9989ea.zip gcc-83ba4d6f2be5937e715f2638085906c06a9989ea.tar.gz gcc-83ba4d6f2be5937e715f2638085906c06a9989ea.tar.bz2 | |
re PR rtl-optimization/55270 (ICE in get_loop_body, at cfgloop.c:823)
2013-01-29 Richard Biener <rguenther@suse.de>
PR tree-optimization/55270
* tree-ssa-dom.c (eliminate_degenerate_phis): If we changed
the CFG, schedule loops for fixup.
* gcc.dg/torture/pr55270.c: New testcase.
From-SVN: r195533
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr55270.c | 22 | ||||
| -rw-r--r-- | gcc/tree-ssa-dom.c | 7 |
4 files changed, 39 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bf77fb0..4765ab7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2013-01-29 Richard Biener <rguenther@suse.de> + + PR tree-optimization/55270 + * tree-ssa-dom.c (eliminate_degenerate_phis): If we changed + the CFG, schedule loops for fixup. + 2013-01-29 Nick Clifton <nickc@redhat.com> * config/rl78/rl78.c (rl78_regno_mode_code_ok_for_base_p): Allow diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index ebc18d9..936053f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2013-01-29 Richard Biener <rguenther@suse.de> + + PR tree-optimization/55270 + * gcc.dg/torture/pr55270.c: New testcase. + 2013-01-28 Jakub Jelinek <jakub@redhat.com> PR rtl-optimization/56117 diff --git a/gcc/testsuite/gcc.dg/torture/pr55270.c b/gcc/testsuite/gcc.dg/torture/pr55270.c new file mode 100644 index 0000000..0b7f906 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr55270.c @@ -0,0 +1,22 @@ +/* { dg-do compile } */ + +unsigned a, b, c; + +void f(void) +{ + for(; a; a++) + { + long *p1 = (long *)&b; + + if(*p1) + return; + + if(b && (*p1 = b) || c && ++*p1) + { + unsigned *p2 = &b; + + for(*p2 = 0; *p2 < 1;) + for(; b; b++); + } + } +} diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index dfb908d..e8b1551 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -3006,7 +3006,12 @@ eliminate_degenerate_phis (void) } if (cfg_altered) - free_dominance_info (CDI_DOMINATORS); + { + free_dominance_info (CDI_DOMINATORS); + /* If we changed the CFG schedule loops for fixup by cfgcleanup. */ + if (current_loops) + loops_state_set (LOOPS_NEED_FIXUP); + } /* Propagation of const and copies may make some EH edges dead. Purge such edges from the CFG as needed. */ |