https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114206

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 60885
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60885&action=edit
slightly more complex testcase

Still fails with `-Os -fno-tree-ccp -fno-tree-copy-prop -fno-tree-forwprop
-fno-tree-fre -fno-tree-vrp` . But it shows that simply looking at arguments to
see if what passes is &b will also fail.

I wonder if the life range analysis that is in cfgexpand should be shared here.

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