add relu lowering

add relu validation
add spatial compute helper
minor refactors

src/PIM/Dialect/Pim/Pim.td

@@ -363,29 +363,6 @@ def PimVVDMulOp : PimOp<"vvdmul", [DestinationStyleOpInterface]> {
   }];
 }
 
-def PimSumOp : PimOp<"sum", [DestinationStyleOpInterface]> {
-  let summary = "Reduce all elements to a single value";
-
-  let arguments = (ins
-    PimTensor:$input,
-    PimTensor:$outputBuffer
-  );
-
-  let results = (outs
-    PimTensor:$output
-  );
-
-  let extraClassDeclaration = [{
-    mlir::MutableOperandRange getDpsInitsMutable() {
-      return getOutputBufferMutable();
-    }
-  }];
-
-  let assemblyFormat = [{
-    `(` $input `,` $outputBuffer `)` attr-dict `:` `(` type($input) `,` type($outputBuffer) `)` `->` type($output)
-  }];
-}
-
 def PimVAvgOp : PimOp<"vavg", [DestinationStyleOpInterface]> {
   let summary = "Average all elements into a single value";