[HLSL][clang] Move hlsl_wave_get_lane_index to EmitHLSLBuiltinExpr (#87131)

Resolves #87109

Author: marcauberer

clang/lib/CodeGen/CGBuiltin.cpp

@@ -5892,16 +5892,6 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
             Name),
         {NDRange, Kernel, Block}));
   }
-
-  case Builtin::BI__builtin_hlsl_wave_get_lane_index: {
-    auto *CI = EmitRuntimeCall(CGM.CreateRuntimeFunction(
-        llvm::FunctionType::get(IntTy, {}, false), "__hlsl_wave_get_lane_index",
-        {}, false, true));
-    if (getTarget().getTriple().isSPIRVLogical())
-      CI = dyn_cast<CallInst>(addControlledConvergenceToken(CI));
-    return RValue::get(CI);
-  }
-
   case Builtin::BI__builtin_store_half:
   case Builtin::BI__builtin_store_halff: {
     Value *Val = EmitScalarExpr(E->getArg(0));
@@ -18317,6 +18307,14 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
         /*ReturnType=*/Op0->getType(), Intrinsic::dx_rsqrt,
         ArrayRef<Value *>{Op0}, nullptr, "dx.rsqrt");
   }
+  case Builtin::BI__builtin_hlsl_wave_get_lane_index: {
+    auto *CI = EmitRuntimeCall(CGM.CreateRuntimeFunction(
+        llvm::FunctionType::get(IntTy, {}, false), "__hlsl_wave_get_lane_index",
+        {}, false, true));
+    if (getTarget().getTriple().isSPIRVLogical())
+      CI = dyn_cast<CallInst>(addControlledConvergenceToken(CI));
+    return CI;
+  }
   }
   return nullptr;
 }