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[Bug rtl-optimization/57344] [4.7/4.8/4.9 Regression] wrong code with pragma pack(1) and -O1 on x86
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 21 May 2013 09:07:38 +0000
- Subject: [Bug rtl-optimization/57344] [4.7/4.8/4.9 Regression] wrong code with pragma pack(1) and -O1 on x86
- Auto-submitted: auto-generated
- References: <bug-57344-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57344
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |rtl-optimization
Known to work| |4.7.0
Target Milestone|4.8.1 |4.7.4
Summary|[4.8/4.9 Regression] wrong |[4.7/4.8/4.9 Regression]
|code with pragma pack(1) |wrong code with pragma
|and -O1 on x86 |pack(1) and -O1 on x86
Known to fail| |4.7.1, 4.7.3, 4.8.0, 4.9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Bi-secting on the 4.7 branch should reveal the offending patch. Tree
optimizers
look good, so the issue is on the RTL or target side.