[llvm] [AMDGPU] Optimize out s_barrier_signal/_wait (PR #116993)

[Piotr Sobczak via llvm-commits]

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@@ -0,0 +1,55 @@
+; RUN: llc -global-isel=0 -mtriple=amdgcn -mcpu=gfx1200 < %s | FileCheck %s
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piotrAMD wrote:

Done.

https://github.com/llvm/llvm-project/pull/116993