[Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops

ebotcazou at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Fri Feb 1 19:43:00 GMT 2019


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88856

--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Segher on IRC says that removing REG_DEAD notes that aren't valid is the
> right thing, so paging others what they think.

Definitely not, passes are not required to maintain REG_DEAD/REG_UNUSED notes,
it's the exclusive job of DF and we're better not open this can of worms.


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