[Bug tree-optimization/102608] [12 regression] Recent change to VN causes bogus Wuninitialized warnings & kernel build failures

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102608

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
   old32_34 = .DEFERRED_INIT (4, 2, 0);

...

-  _24 = .DEFERRED_INIT (4, 2, 0);
-  __res ={v} _24;
+  __res ={v} old32_34;


# 68 "../arch/mips/include/asm/cmpxchg.h"
This is due to __typeof(*((volatile u32 *)ptr)) __ret



The warning is kinda of correct but wrong as it uses the wrong decl :).

Fre maybe should be disabled for DEFERRED_INIT ....