add relu lowering

add relu validation
add spatial compute helper
minor refactors

src/PIM/Conversion/ONNXToSpatial/Patterns/Tensor/Concat.cpp

@@ -9,8 +9,7 @@ using namespace mlir;
 namespace onnx_mlir {
 
 struct Concat : public OpConversionPattern<ONNXConcatOp> {
-  Concat(MLIRContext* ctx)
-  : OpConversionPattern(ctx) {}
+  using OpConversionPattern::OpConversionPattern;
 
   LogicalResult matchAndRewrite(ONNXConcatOp maxpoolOp,
                                 ONNXConcatOpAdaptor adaptor,
@@ -24,7 +23,7 @@ struct Concat : public OpConversionPattern<ONNXConcatOp> {
   }
 };
 
-void populateONNXConcatToTensorConcatPattern(RewritePatternSet& patterns, MLIRContext* ctx) {
+void populateConcatPatterns(RewritePatternSet& patterns, MLIRContext* ctx) {
   patterns.insert<Concat>(ctx);
 }
 

src/PIM/Conversion/ONNXToSpatial/Patterns/Tensor/Reshape.cpp

@@ -114,6 +114,6 @@ struct Reshape : OpConversionPattern<ONNXReshapeOp> {
 
 } // namespace
 
-void populateReshapeConversionPattern(RewritePatternSet& patterns, MLIRContext* ctx) { patterns.insert<Reshape>(ctx); }
+void populateReshapePatterns(RewritePatternSet& patterns, MLIRContext* ctx) { patterns.insert<Reshape>(ctx); }
 
 } // namespace onnx_mlir