[llvm] [AMDGPU] Avoid unneeded waitcounts before spill stores (PR #108303)

[Stanislav Mekhanoshin via llvm-commits]

================
@@ -901,7 +901,7 @@ void WaitcntBrackets::updateByEvent(const SIInstrInfo *TII,
     }
   } else /* LGKM_CNT || EXP_CNT || VS_CNT || NUM_INST_CNTS */ {
     // Match the score to the destination registers.
-    for (unsigned I = 0, E = Inst.getNumOperands(); I != E; ++I) {
+    for (unsigned I = 0, E = Inst.getNumExplicitOperands(); I != E; ++I) {
----------------
rampitec wrote:

If you want I can add to getNumExplicitArguments() also getDesc().NumImplicitDefs and getDesc().NumImplicitUses, but I do not see a case for it. I am also not sure the order of implicit operands will be maintained.

https://github.com/llvm/llvm-project/pull/108303