[llvm] [AMDGPU] Add support for preloading implicit kernel arguments (PR #83817)

[Matt Arsenault via llvm-commits]

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@@ -8445,6 +8536,37 @@ SDValue SITargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
   }
   case Intrinsic::amdgcn_addrspacecast_nonnull:
     return lowerADDRSPACECAST(Op, DAG);
+  case Intrinsic::amdgcn_preload_implicitarg: {
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arsenm wrote:

Missing globalisel handling 

https://github.com/llvm/llvm-project/pull/83817