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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/82139] unnecessary movapd with _mm_castsi128_pd to use BLENDPD on __m128i results Date: Sat, 04 Sep 2021 03:01:49 +0000 [thread overview] Message-ID: <bug-82139-4-jsLKZa4fCg@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-82139-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82139 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed| |2021-09-04 Keywords| |ra Status|UNCONFIRMED |NEW Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- It is worse on the trunk: .L2: movdqu (%rdi), %xmm1 movdqu (%rdi), %xmm0 addq $16, %rdi paddd %xmm3, %xmm1 paddd %xmm2, %xmm0 blendpd $2, %xmm0, %xmm1 movups %xmm1, -16(%rdi) cmpq %rdi, %rax jne .L2 Why two loads from %rdi here? This is done during RA as far as I can tell.
next parent reply other threads:[~2021-09-04 3:01 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-82139-4@http.gcc.gnu.org/bugzilla/> 2021-09-04 3:01 ` pinskia at gcc dot gnu.org [this message] 2021-09-06 6:09 ` crazylht at gmail dot com
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