[llvm] [llvm-mca][x86] Ensure avxvnni tests actually test the avxvnni instructions (PR #157892)

[Simon Pilgrim via llvm-commits]

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@@ -1,29 +1,29 @@
 # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
 # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=icelake-server -instruction-tables < %s | FileCheck %s
 
-vpdpbusd    %xmm0, %xmm1, %xmm2
-vpdpbusd    (%rax), %xmm1, %xmm2
+{vex} vpdpbusd    %xmm0, %xmm1, %xmm2
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RKSimon wrote:

deleted

https://github.com/llvm/llvm-project/pull/157892