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[Bug rtl-optimization/49936] [4.7 Regression] IRA handles CANNOT_CHANGE_MODE_CLASS poorly, + spills to memory on 4.7
- From: "sandra at codesourcery dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 10 Oct 2011 14:34:11 +0000
- Subject: [Bug rtl-optimization/49936] [4.7 Regression] IRA handles CANNOT_CHANGE_MODE_CLASS poorly, + spills to memory on 4.7
- Auto-submitted: auto-generated
- References: <bug-49936-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49936
Sandra Loosemore <sandra at codesourcery dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|FIXED |
--- Comment #7 from Sandra Loosemore <sandra at codesourcery dot com> 2011-10-10 14:34:11 UTC ---
The additional spills to memory on 4.7 compared to 4.6 were fixed (at least the
last time I checked), but there is still a real problem with poor RA decisions
resulting from CANNOT_CHANGE_MODE_CLASS. So, let's please not mark this issue
resolved.