https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36188
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2009-04-22 21:49:30 |2021-8-30
CC| |hubicka at gcc dot gnu.org
Summary|missed CCP on global vars |missed optimistic
| |value-numbering on global
| |vars
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
IIRC we had talked about IPA discovering variables used only in a single
function so we could treat them optimistically (with the complication of
recursion representing backedges). Eventually IPA REFs give us enough info
already
but then IPA REFs are not available to scalar (post-IPA) passes.
