[llvm] AMDGPU: Add codegen for atomicrmw operations usub_cond and usub_sat (PR #141068)

[via llvm-commits]

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@@ -0,0 +1,1558 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -global-isel=0 -mtriple=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX9-SDAG %s
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anjenner wrote:

Removed them in https://github.com/llvm/llvm-project/pull/141068/commits/c2e8ead5ff9586c24830449cd59998882cc3e35e .

https://github.com/llvm/llvm-project/pull/141068