[llvm] [X86][NewPM] Port X86LowerAMXType to NewPM (PR #165084)

[Aiden Grossman via llvm-commits]

================
@@ -1,5 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-  ; RUN: opt --codegen-opt-level=0 -mtriple=x86_64 -lower-amx-type %s -S | FileCheck %s
+  ; RUN: opt --codegen-opt-level=0 -mtriple=x86_64 -x86-lower-amx-type %s -S | FileCheck %s
+  ; TODO: Test this with the NewPM when we can force this pass to run despite optnone.
----------------
boomanaiden154 wrote:

It is. Was just making a note to myself because I only realized that was how `AlwaysInline` and friends handled this after putting my laptop away for the note.

https://github.com/llvm/llvm-project/pull/165084