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[Bug target/56253] fp-contract does not work with SSE and AVX FMAs (neither FMA4 nor FMA3)
- From: "agner at agner dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 25 Sep 2014 06:14:43 +0000
- Subject: [Bug target/56253] fp-contract does not work with SSE and AVX FMAs (neither FMA4 nor FMA3)
- Auto-submitted: auto-generated
- References: <bug-56253-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56253
--- Comment #13 from Agner Fog <agner at agner dot org> ---
Thank you. I agree that integer overflow should be well-defined when using
intrinsics.
Is it possible to do the same optimization with boolean vector intrinsics, such
as _mm_and_epi32 and _mm_or_ps to enable optimizations such as algebraic
reduction and constant propagation?