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[Bug rtl-optimization/42889] [4.5 Regression] "-fcompare-debug failure (length)" with "-O1 -fgcse"
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Jan 2010 22:09:28 -0000
- Subject: [Bug rtl-optimization/42889] [4.5 Regression] "-fcompare-debug failure (length)" with "-O1 -fgcse"
- References: <bug-42889-14164@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from jakub at gcc dot gnu dot org 2010-01-28 22:09 -------
Those need to be analyzed, perhaps some will need a similar change, many others
don't need any change, as they can't be called for DEBUG_INSNs. E.g.
DEBUG_INSN isn't changing control flow, so any changes to it won't add/remove
basic blocks, etc.
But I fail to see why we'd need to solve all at once.
This patch has been successfully bootstrapped/regtested on x86_64-linux and
i686-linux BTW.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42889