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

[Jay Foad 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) {
----------------
jayfoad wrote:

> Besides, there is no way to load vcc

Yes there is! You can load it with s_load or s_buffer_load.

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