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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/106146] a redundant movprfx insn compare to llvm
Date: Mon, 11 Jul 2022 22:23:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106146

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-07-11
     Ever confirmed|0                           |1
           Severity|normal                      |enhancement

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Looks like:
(insn 26 25 31 (set (reg/v:VNx4SF 32 v0 [orig:100 res ] [100])
        (unspec:VNx4SF [
                (reg:VNx4BI 68 p0 [orig:95 pg ] [95])
                (unspec:VNx4SF [
                        (reg:VNx4BI 68 p0 [orig:95 pg ] [95])
                        (const_int 1 [0x1])
                        (reg/v:VNx4SF 32 v0 [orig:100 res ] [100])
                        (reg/v:VNx4SF 33 v1 [orig:97 a0v ] [97])
                    ] UNSPEC_COND_FADD)
                (const_vector:VNx4SF repeat [
                        (const_double:SF 0.0 [0x0.0p+0])
                    ])
            ] UNSPEC_SEL)) "/app/example.cpp":19:38 7127
{*cond_addvnx4sf_any_strict}
     (nil))

Prints out two asm instructions.=