[llvm] [GISel] Fold shifts to constant result. (PR #123510)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,115 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=amdgcn -run-pass=amdgpu-prelegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s
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arsenm wrote:

Don't need -verify-machineinstrs

https://github.com/llvm/llvm-project/pull/123510