[llvm] [AMDGPU] Add regbankselect rules for G_ADD/SUB and variants (PR #159860)

[Petar Avramovic via llvm-commits]

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@@ -0,0 +1,74 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=amdgcn -mcpu=gfx1200 -run-pass=amdgpu-regbankselect %s -o - | FileCheck %s
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petar-avramovic wrote:

amdgpu-regbankselect on its own works correctly, what we want to test is -run-pass=amdgpu-regbankselect,amdgpu-regbanklegalize

https://github.com/llvm/llvm-project/pull/159860