Migrate to {} instead of T().

Author: kazutakahirata

mlir/unittests/Debug/FileLineColLocBreakpointManagerTest.cpp

@@ -23,9 +23,9 @@ static Operation *createOp(MLIRContext *context, Location loc,
                            StringRef operationName,
                            unsigned int numRegions = 0) {
   context->allowUnregisteredDialects();
-  return Operation::create(loc, OperationName(operationName, context),
-                           TypeRange(), ValueRange(), std::nullopt,
-                           OpaqueProperties(nullptr), BlockRange(), numRegions);
+  return Operation::create(loc, OperationName(operationName, context), {}, {},
+                           std::nullopt, OpaqueProperties(nullptr), {},
+                           numRegions);
 }
 
 namespace {

mlir/unittests/IR/OperationSupportTest.cpp

@@ -22,9 +22,9 @@ static Operation *createOp(MLIRContext *context, ArrayRef<Value> operands = {},
                            ArrayRef<Type> resultTypes = {},
                            unsigned int numRegions = 0) {
   context->allowUnregisteredDialects();
-  return Operation::create(
-      UnknownLoc::get(context), OperationName("foo.bar", context), resultTypes,
-      operands, std::nullopt, nullptr, BlockRange(), numRegions);
+  return Operation::create(UnknownLoc::get(context),
+                           OperationName("foo.bar", context), resultTypes,
+                           operands, std::nullopt, nullptr, {}, numRegions);
 }
 
 namespace {