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[Bug target/70465] [4.9/5/6/7 Regression] Poor code for x87 asm
- 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: Thu, 31 Mar 2016 08:18:12 +0000
- Subject: [Bug target/70465] [4.9/5/6/7 Regression] Poor code for x87 asm
- Auto-submitted: auto-generated
- References: <bug-70465-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70465
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |i?86-*-*
Target Milestone|6.0 |7.0
Summary|[4.9/5/6 Regression] Poor |[4.9/5/6/7 Regression]
|code for x87 asm |Poor code for x87 asm
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Whatever we do, please defer to GCC 7. (who cares about x87 math these days?)
I wonder why __builtin_atan2 doesn't expand to fpatan with fancy-math-387 and
-ffast-math.