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[Bug tree-optimization/47447] [4.3/4.4 Regression] "Unable to coalesce ssa_names <x> and <y>" ICE in tree-ssa-coalesce.c when -O3 is used
- From: "asharif at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 26 Jan 2011 21:50:33 +0000
- Subject: [Bug tree-optimization/47447] [4.3/4.4 Regression] "Unable to coalesce ssa_names <x> and <y>" ICE in tree-ssa-coalesce.c when -O3 is used
- Auto-submitted: auto-generated
- References: <bug-47447-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47447
--- Comment #2 from asharif at gcc dot gnu.org 2011-01-26 21:50:26 UTC ---
It seems like this bug is reproducible on older versions of the trunk.
This change:
http://gcc.gnu.org/viewcvs?view=revision&revision=146776
seems to suppress it (or fix it?). Jan Hubicka is the original author of this
patch (from pretty-ipa I believe) and Richard brought it into mainline.
Jan, can you comment on this bug and confirm that your change does indeed fix
it?