[llvm] [AMDGPU][GlobalISel] Align `selectVOP3PMadMixModsImpl` with the `SelectionDAG` counterpart (PR #110168)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,42 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
+# RUN: llc -mtriple=amdgcn -mcpu=gfx908 -run-pass=instruction-select,machineverifier -o - %s | FileCheck -check-prefixes=GFX9 %s
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arsenm wrote:

Should keep both probably

https://github.com/llvm/llvm-project/pull/110168