[llvm] [AMDGPU] Skip non-first termintors when forcing emit zero flag (PR #112116)

[Shilei Tian via llvm-commits]

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@@ -0,0 +1,21 @@
+# RUN: llc -mtriple=amdgcn-amd-amdhsa -run-pass si-insert-waitcnts -amdgpu-waitcnt-forcezero=1 %s -o - | FileCheck %s
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shiltian wrote:

The whole point of this PR is to make sure there is no waitcnt between any terminator.

https://github.com/llvm/llvm-project/pull/112116