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[Bug rtl-optimization/21182] [4.9/5/6 Regression] gcc can use registers but uses stack instead
- From: "law at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 17 Dec 2015 20:30:09 +0000
- Subject: [Bug rtl-optimization/21182] [4.9/5/6 Regression] gcc can use registers but uses stack instead
- Auto-submitted: auto-generated
- References: <bug-21182-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21182
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
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CC| |law at redhat dot com
--- Comment #18 from Jeffrey A. Law <law at redhat dot com> ---
I just checked this with the trunk. While we're generating better code for
-UNAIL_REGS vs -NAIL_REGS, we still regressed. For reference:
-O2 -DNAIL_REGS 91 references to %esp
-O2 -UNAIL_REGS 27 references to %esp
Similarly for -O3.