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

[zsojka at seznam dot cz]

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

--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 37507
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37507&action=edit
reduced testcase