https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67288
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
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CC| |law at redhat dot com
--- Comment #15 from Jeffrey A. Law <law at redhat dot com> ---
I agree that the data combine would need comes from a different block. But
ISTM that there's a dominance relationship we could exploit here.
Specifically blocks 2 & 3 are a class extended basic block. Information
generated in bb2 (or on the edge bb2->bb3) may still be available in bb3.
I don't think we're set up to exploit extended blocks in combine, but that may
be something worth exploring.
