[Bug rtl-optimization/69535] [6 Regression] wrong code with -O -fno-tree-bit-ccp -fno-tree-reassoc due to use of uninitialised value

[rth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69535

--- Comment #5 from Richard Henderson <rth at gcc dot gnu.org> ---
Created attachment 37525
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37525&action=edit
proposed patch