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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/103797] Clang vectorized LightPixel while GCC
 does not
Date: Tue, 04 Jan 2022 13:16:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103797

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
            Version|unknown                     |12.0
         Resolution|---                         |FIXED

--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
The division is now vectorized, your short testcase produces

t:
.LFB0:
        .cfi_startproc
        movss   f(%rip), %xmm4
        movss   test+8(%rip), %xmm3
        movq    test(%rip), %xmm0
        mulss   %xmm4, %xmm3
        movaps  %xmm4, %xmm1
        shufps  $0xe0, %xmm1, %xmm1
        mulps   %xmm1, %xmm0
        movhps  .LC0(%rip), %xmm1
        rcpps   %xmm1, %xmm2
        sqrtss  %xmm3, %xmm3
        mulps   %xmm2, %xmm1
        sqrtps  %xmm0, %xmm0
        divss   %xmm4, %xmm3
        mulps   %xmm2, %xmm1
        addps   %xmm2, %xmm2
        subps   %xmm1, %xmm2
        mulps   %xmm2, %xmm0
        movlps  %xmm0, test(%rip)
        movss   %xmm3, test+8(%rip)
        ret=