[Bug target/98348] [10 Regression] GCC 10.2 AVX512 Mask regression from GCC 9

[david.bolvansky at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98348

Dávid Bolvanský <david.bolvansky at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |david.bolvansky at gmail dot 
com

--- Comment #20 from Dávid Bolvanský <david.bolvansky at gmail dot com> ---
Some small regression (missed opportunity to use vptestnmd):

Current trunk

compare(unsigned int __vector(16)):
  vpxor xmm1, xmm1, xmm1
  vpcmpd k0, zmm0, zmm1, 0
  vpmovm2d zmm0, k0
  ret

GCC 9.2

compare(unsigned int __vector(16)):
  vptestnmd k0, zmm0, zmm0
  vpmovm2d zmm0, k0
  ret


https://gcc.godbolt.org/z/5vK68jM3r