[llvm] [NewPM][CodeGen][llc] Add NPM support (PR #70922)

[Arthur Eubanks via llvm-commits]

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@@ -0,0 +1,4 @@
+; RUN: llc -mtriple=x86_64-pc-linux-gnu -enable-new-pm -print-pipeline-passes -start-before=mergeicmps -stop-after=gc-lowering -filetype=null %s | FileCheck %s
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aeubanks wrote:

should `FileCheck --match-full-lines %s`

https://github.com/llvm/llvm-project/pull/70922