[Bug target/115406] [15 Regression] wrong code with vector compare at -O0 with -mavx512f since r15-920-gb6c6d5abf0d31c

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115406

--- Comment #4 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---

> 
> and for _2 = VIEW_CONVERT_EXPR<vector(1) signed char>(_1); we explicitly
> clear the upper bits due to PR113576, and then we get 1 hit the abort.
It's not VIEW_CONVERT_EXPR clear the uppper bits, but _1 = { -1 };