[llvm] [AMDGPU] Model GFX1250 VALU blocking cycles (PR #222483)

[Matt Arsenault via llvm-commits]

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@@ -11169,6 +11177,17 @@ unsigned SIInstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
   return SchedModel.computeInstrLatency(&MI);
 }
 
+unsigned SIInstrInfo::getBlockingCycles(const MachineInstr &MI) const {
+  if (!ST.hasGFX1250Insts())
+    return 0;
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arsenm wrote:

This isn't really an instruction property?

https://github.com/llvm/llvm-project/pull/222483