[llvm] [AMDGPU] Exclude certain opcodes from being marked as single use (PR #91802)

[Jay Foad via llvm-commits]

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@@ -819,9 +825,7 @@ class VOP3P_DPPe_Common<bits<7> op, VOPProfile P> : VOP3P_DPPe_Common_Base<op, P
 
 class VOP_DPP_Pseudo <string OpName, VOPProfile P, list<dag> pattern=[],
   dag Ins = P.InsDPP, string asmOps = P.AsmDPP> :
-  InstSI <P.OutsDPP, Ins, OpName#asmOps, pattern>,
-  VOP <OpName>,
-  SIMCInstr <OpName#"_dpp", SIEncodingFamily.NONE> {
+  VOP_Pseudo<OpName, "_dpp", P, P.OutsDPP, Ins, asmOps, pattern> {
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jayfoad wrote:

I see. I think this just allows you to use VOP_Pseudo as a common superclass for all VOP instructions, DPP or not, when you define the searchable table. Perhaps you could use an even more common class like InstSI - I'm not sure if that would make the generated table bigger.

@Sisyph @kosarev any thoughts on this part of the patch?

https://github.com/llvm/llvm-project/pull/91802