[llvm] [AMDGPU] Remove scope check in SIInsertWaitcnts::generateWaitcntInstBefore (PR #157821)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,65 @@
+; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=gfx950 < %s | FileCheck -check-prefix=CHECK %s
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arsenm wrote:

CHECK is the default, don't explicitly use -check-prefix. Also better to use update_llc_test_checks 

https://github.com/llvm/llvm-project/pull/157821