This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/68695] [6 Regression] Performance regression related to ssa patch / ifcvt
- 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: Mon, 07 Dec 2015 09:40:37 +0000
- Subject: [Bug tree-optimization/68695] [6 Regression] Performance regression related to ssa patch / ifcvt
- Auto-submitted: auto-generated
- References: <bug-68695-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68695
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
So for some reason no SSA coalescing is done for s390x here (compared to
x86_64).
That's the thing to look at, possibly related to some of the required parameter
coalescing / default def coalescing hackery.