Revert "[mlir][nfc] GpuToROCDL: Remove some dead code" (#121402)

Reverts #121395

Author: Hardcode84

mlir/lib/Conversion/GPUToROCDL/LowerGpuOpsToROCDLOps.cpp

@@ -47,6 +47,7 @@
 
 #include "../GPUCommon/GPUOpsLowering.h"
 #include "../GPUCommon/IndexIntrinsicsOpLowering.h"
+#include "../GPUCommon/OpToFuncCallLowering.h"
 
 namespace mlir {
 #define GEN_PASS_DEF_CONVERTGPUOPSTOROCDLOPS
@@ -345,6 +346,16 @@ void mlir::configureGpuToROCDLConversionLegality(ConversionTarget &target) {
   target.addLegalOp<gpu::YieldOp, gpu::GPUModuleOp>();
 }
 
+template <typename OpTy>
+static void populateOpPatterns(const LLVMTypeConverter &converter,
+                               RewritePatternSet &patterns, StringRef f32Func,
+                               StringRef f64Func, StringRef f32ApproxFunc,
+                               StringRef f16Func) {
+  patterns.add<ScalarizeVectorOpLowering<OpTy>>(converter);
+  patterns.add<OpToFuncCallLowering<OpTy>>(converter, f32Func, f32ApproxFunc,
+                                           f16Func);
+}
+
 void mlir::populateGpuToROCDLConversionPatterns(
     const LLVMTypeConverter &converter, RewritePatternSet &patterns,
     mlir::gpu::amd::Runtime runtime) {