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[Bug middle-end/65796] unnecessary stack spills during complex numbers function calls
- 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, 20 Apr 2015 08:35:06 +0000
- Subject: [Bug middle-end/65796] unnecessary stack spills during complex numbers function calls
- Auto-submitted: auto-generated
- References: <bug-65796-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65796
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-04-20
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There is some older bug where I noticed the same issue. It's basically an
artifact of the x86 calling conventions and GCC going through generic
argument setup code (and RTL optimizers not being able to optimize
spill + load into unpcklps).
That said, somebody needs to find the duplicate bugreport.
PR48607 is also related.