[Bug target/125950] New: x86: avxvnniint8 instructions with higher registers ( evex prefix) getting generated for -march=znver6

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125950

            Bug ID: 125950
           Summary: x86: avxvnniint8 instructions with higher registers (
                    evex prefix) getting generated for -march=znver6
           Product: gcc
           Version: 16.1.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vekumar at gcc dot gnu.org
  Target Milestone: ---

When the test case is compiled with -march=znver6, avxvnniint8 instruction with
higher registers xmm/ymm >15 is getting generated. 

ref: https://godbolt.org/z/3hq3e8EGP