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From: "vineetg at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/109279] RISC-V: complex constants synthesized should be
 improved
Date: Fri, 19 May 2023 17:31:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109279

Vineet Gupta <vineetg at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vineetg at gcc dot gnu.org
             Status|NEW                         |ASSIGNED

--- Comment #15 from Vineet Gupta <vineetg at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #6)
> Take:
> long long f(void)
> {
>   return 0x0101010101010101ull;
> }
>=20
> ---- CUT ----
> This should be done as:
>         li      a0,16842752
>         addi    a0,a0,257
>         slli    a1,a0,32
>         or      a0,a0,a1

I committed a fix today which gets us to exactly that [1]

[1] https://gcc.gnu.org/pipermail/gcc-patches/2023-May/618948.html=