*Renames few variables and updates few comments

mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp

@@ -3436,8 +3436,12 @@ static bool areResultExprsSubsetOf(AffineMap subMap, AffineMap fullMap) {
   return explicitSet == defaultSet;
 }
 
-/// Returns true if the \p explictMap is broadcasted with respect to the
-/// \p defaultMap.
+/// Check if the user defined map is valid broadcast map. Here broadcast
+/// indexing maps are defined in context of corresponding default indexing maps
+/// for the given Op. This way the check becomes very simple i.e just check the
+/// number of result dims.
+/// Returns true if the explictMap is broadcasted with respect to the
+/// defaultMap.
 static bool isBroadcasted(AffineMap explictMap, AffineMap defaultMap) {
   return explictMap.getNumResults() < defaultMap.getNumResults();
 }
@@ -3458,10 +3462,6 @@ static LogicalResult verifyExtendedMatmulSemantic(MatmulOp matmulOp,
     return matmulOp->emitOpError()
            << "Unexpected dim expression in map result.";
 
-  // Check if the user defined map is valid broadcast map. Here broadcast
-  // indexing maps are defined in context of corresponding default indexing maps
-  // for the given Op. This way the check becomes very simple i.e just check the
-  // number of result dims.
   if (isBroadcasted(opIndexingMap, defaultIndexingMap)) {
     if (!matmulOp.isValidLhsRhsBroadcastMap(opIndexingMap)) {
       return matmulOp->emitOpError()
@@ -3527,8 +3527,7 @@ static LogicalResult verifyOutputMap(BatchMatmulOp batchMatmulOp,
 }
 
 /// Verifies the broadcast and transpose semantic specified by the explicit
-/// indexing map for the BatchMatmulOp \p op for each operand specified by \p
-/// opIndex.
+/// indexing map for the BatchMatmulOp op for each operand specified by opIndex.
 static LogicalResult
 verifyExtendedBatchMatmulSemantic(BatchMatmulOp batchMatmulOp,
                                   unsigned opIndex) {
@@ -3934,7 +3933,7 @@ bool BatchMatmulOp::hasUserDefinedMaps() {
   return defaultMaps != explicitMaps;
 }
 
-/// Returns true if the given broadcast map \p bcastMap is valid for this op.
+/// Returns true if the given broadcast map bcastMap is valid for this op.
 bool BatchMatmulOp::isValidLhsRhsBroadcastMap(AffineMap bcastMap, bool isLHS) {
   assert(bcastMap.getNumResults() < 3 &&
          "Expected less than 3 result dim expr.");
@@ -3960,16 +3959,15 @@ void BatchMatmulOp::regionBuilder(ImplicitLocOpBuilder &b, Block &block,
   RegionBuilderHelper helper(b, block);
   SmallVector<Value> yields;
 
-  Value value1 =
-      helper.buildTypeFn(TypeFn::cast_signed, block.getArgument(2).getType(),
-                         block.getArgument(0));
-  Value value2 =
-      helper.buildTypeFn(TypeFn::cast_signed, block.getArgument(2).getType(),
-                         block.getArgument(1));
-  Value value3 = helper.buildBinaryFn(BinaryFn::mul, value1, value2);
-  Value value4 =
-      helper.buildBinaryFn(BinaryFn::add, block.getArgument(2), value3);
-  yields.push_back(value4);
+  auto toType = block.getArgument(2).getType();
+  Value castValA =
+      helper.buildTypeFn(TypeFn::cast_signed, toType, block.getArgument(0));
+  Value castValB =
+      helper.buildTypeFn(TypeFn::cast_signed, toType, block.getArgument(1));
+  Value mulVal = helper.buildBinaryFn(BinaryFn::mul, castValA, castValB);
+  Value addVal =
+      helper.buildBinaryFn(BinaryFn::add, block.getArgument(2), mulVal);
+  yields.push_back(addVal);
   helper.yieldOutputs(yields);
 }