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[Bug target/80833] 32-bit x86 causes store-forwarding stalls for int64_t -> xmm
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 24 May 2017 13:33:19 +0000
- Subject: [Bug target/80833] 32-bit x86 causes store-forwarding stalls for int64_t -> xmm
- Auto-submitted: auto-generated
- References: <bug-80833-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80833
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 41412
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41412&action=edit
Prototype patch
Patch that emits mov/pinsr or mov/pextr pairs for DImode (x86_32) and TImode
(x86_64) moves.