[llvm] [AMDGPU] Generate s_lshl?_add_u32 (PR #167032)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,90 @@
+; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
+; RUN: llc -mtriple=amdgcn -mcpu=gfx1200 -stop-after=si-fix-sgpr-copies < %s | FileCheck %s
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arsenm wrote:

Just let it run to the end? 

https://github.com/llvm/llvm-project/pull/167032