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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/53071] Wrong instruction replacement when compiling for xop
Date: Fri, 23 Nov 2012 07:51:00 -0000	[thread overview]
Message-ID: <bug-53071-4-RLQFEgEAal@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-53071-4@http.gcc.gnu.org/bugzilla/>


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53071

--- Comment #1 from Uros Bizjak <ubizjak at gmail dot com> 2012-11-23 07:49:41 UTC ---
Resulting asm is quite different w/ current mainline:

_Z4testU8__vectorxS_S_:
    vmovdqa    %xmm2, -24(%rsp)
    vpsrlq    $32, %xmm0, %xmm3
    vpmuldq    %xmm1, %xmm0, %xmm2
    vpmuldq    %xmm1, %xmm3, %xmm1
    vpand    .LC0(%rip), %xmm1, %xmm1
    vpsrlq    $32, %xmm2, %xmm2
    vmovd    -24(%rsp), %xmm4
    vpor    %xmm1, %xmm2, %xmm1
    vpaddd    %xmm0, %xmm1, %xmm1
    vpsrad    $31, %xmm0, %xmm0
    vpsrad    %xmm4, %xmm1, %xmm1
    vpsubd    %xmm0, %xmm1, %xmm0
    ret

_Z5test2U8__vectorxS_S_:
    vpxor    %xmm3, %xmm3, %xmm3
    vmovdqa    %xmm2, -24(%rsp)
    vpmuldq    %xmm1, %xmm0, %xmm2
    vpsrlq    $32, %xmm2, %xmm2
    vpmacsdqh    %xmm3, %xmm1, %xmm0, %xmm1
    vpand    .LC0(%rip), %xmm1, %xmm1
    vmovd    -24(%rsp), %xmm4
    vpor    %xmm1, %xmm2, %xmm1
    vpaddd    %xmm0, %xmm1, %xmm1
    vpsrad    $31, %xmm0, %xmm0
    vpsrad    %xmm4, %xmm1, %xmm1
    vpsubd    %xmm0, %xmm1, %xmm0
    ret


  parent reply	other threads:[~2012-11-23  7:51 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-22 10:07 [Bug c/53071] New: " agner at agner dot org
2012-04-22 10:09 ` [Bug target/53071] " pinskia at gcc dot gnu.org
2012-04-23 10:33 ` rguenth at gcc dot gnu.org
2012-11-23  7:51 ` ubizjak at gmail dot com [this message]
2024-03-17  2:33 ` sjames at gcc dot gnu.org

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