[llvm] [AMDGPU] Make WaitcntBrackets::simplifyWaitcnt const again (PR #173390)

[Nicolai Hähnle via llvm-commits]

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@@ -1212,15 +1217,16 @@ void WaitcntBrackets::print(raw_ostream &OS) const {
 
 /// Simplify the waitcnt, in the sense of removing redundant counts, and return
 /// whether a waitcnt instruction is needed at all.
-void WaitcntBrackets::simplifyWaitcnt(AMDGPU::Waitcnt &Wait) {
-  simplifyWaitcnt(LOAD_CNT, Wait.LoadCnt);
-  simplifyWaitcnt(EXP_CNT, Wait.ExpCnt);
-  simplifyWaitcnt(DS_CNT, Wait.DsCnt);
-  simplifyWaitcnt(STORE_CNT, Wait.StoreCnt);
-  simplifyWaitcnt(SAMPLE_CNT, Wait.SampleCnt);
-  simplifyWaitcnt(BVH_CNT, Wait.BvhCnt);
-  simplifyWaitcnt(KM_CNT, Wait.KmCnt);
-  simplifyXcnt(Wait, Wait);
+void WaitcntBrackets::simplifyWaitcnt(const AMDGPU::Waitcnt &CheckWait,
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nhaehnle wrote:

Please update the comment.

https://github.com/llvm/llvm-project/pull/173390