https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115921
Xi Ruoyao <xry111 at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |xry111 at gcc dot gnu.org
--- Comment #5 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #3)
> IIRC, the reason for that condition to to avoid spoiling certain cases where
> we want to ultimately generate shNadd instructions. It's a tradeoff.
Is there a test case where performing the reassocation will prevent using
shNadd? I'm fixing this for LoongArch where alsl does the same thing as shNadd
but I cannot figure out why the reassociation is bad considering it.
