https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124760
Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |bergner at gcc dot gnu.org
--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Robin Dapp from comment #0)
> int foo (int t)
> {
> return 3 * t - 1;
> }
>
> With -march=rv64gcbv -O3, we emit:
> slliw a5,a0,1
> addw a0,a5,a0
> addiw a0,a0,-1
> ret
>
> and it could be:
> sh1add a0, a0, a0
> addiw a0, a0, -1
> ret
Confirmed fixed on trunk, but if we simplify the test case to just:
int foo (int t)
{
return 3 * t;
}
I'd expect just the sh1add, ala:
sh1add a0, a0, a0
ret
...but instead, we get:
slliw a5,a0,1
addw a0,a5,a0
ret
Do we want a new bugzilla entry for this?
