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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/52889] incorrect sign of _mm_nmsub_XX intrinsics in fma4intrin.h
Date: Sun, 17 Dec 2023 02:16:59 +0000 [thread overview]
Message-ID: <bug-52889-4-VlhN7fTru9@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-52889-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52889
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|UNCONFIRMED |RESOLVED
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I tested:
```
#include <x86intrin.h>
extern __m128 a,b,c;
void foo(){
a = _mm_nmsub_ps(a,b,c);
}
```
GCC produces correctly:
foo:
vmovaps a(%rip), %xmm1
vmovaps b(%rip), %xmm2
vfnmsubps c(%rip), %xmm2, %xmm1, %xmm0
vmovaps %xmm0, a(%rip)
ret
> However the fma4intrin.h mapping has changed from 4.5 -> 4.6,
> which might likely have introduced the error.
No r0-103863-g89509419968e2b (which was included in GCC 4.6.0) fixed the
defintion.
next prev parent reply other threads:[~2023-12-17 2:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-06 16:31 [Bug c/52889] New: " MathiasPuetz at gmx dot de
2023-12-17 2:08 ` [Bug target/52889] " pinskia at gcc dot gnu.org
2023-12-17 2:16 ` pinskia at gcc dot gnu.org [this message]
2023-12-17 11:00 ` MathiasPuetz at gmx dot de
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