[llvm] [AMDGPU][GlobalISel] Enable kernel argument preloading (PR #134655)

[Shilei Tian via llvm-commits]

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@@ -559,13 +617,29 @@ bool AMDGPUCallLowering::lowerFormalArgumentsKernel(
 
         B.buildAddrSpaceCast(VRegs[i][0], PtrReg);
       }
-    } else {
-      ArgInfo OrigArg(VRegs[i], Arg, i);
-      const unsigned OrigArgIdx = i + AttributeList::FirstArgIndex;
-      setArgFlags(OrigArg, OrigArgIdx, DL, F);
-      lowerParameter(B, OrigArg, ArgOffset, Alignment);
+      i++;
+      continue;
     }
 
+    auto &PreloadKernArgs = Info->getArgInfo().PreloadKernArgs;
+    auto PreloadKernArg =
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shiltian wrote:

that one can pass

https://github.com/llvm/llvm-project/pull/134655