[llvm] [AMDGPU] Correctly insert s_nops for implicit read of SDWA (PR #100276)

[Matt Arsenault via llvm-commits]

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@@ -935,6 +935,30 @@ int GCNHazardRecognizer::checkVALUHazards(MachineInstr *VALU) {
           if (Use.isReg() && TRI->regsOverlap(Def, Use.getReg()))
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arsenm wrote:

Most notably this will break on inline asm uses 

https://github.com/llvm/llvm-project/pull/100276