[MLIR] correct return type of parse() functions (#120180)

The `parseX()` functions that are defined to support `custom<X>` in
`assemblyFormat` should return `ParseResult` rather than
`LogicalResult`. The `ParseResult` type is necessary due to tablegen
generating code that expects this type within an Op `parseX()` function.

Author: tim-hoffman

mlir/lib/Dialect/GPU/IR/GPUDialect.cpp

@@ -2114,8 +2114,8 @@ LogicalResult ObjectAttr::verify(function_ref<InFlightDiagnostic()> emitError,
 }
 
 namespace {
-LogicalResult parseObject(AsmParser &odsParser, CompilationTarget &format,
-                          StringAttr &object) {
+ParseResult parseObject(AsmParser &odsParser, CompilationTarget &format,
+                        StringAttr &object) {
   std::optional<CompilationTarget> formatResult;
   StringRef enumKeyword;
   auto loc = odsParser.getCurrentLocation();

mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp

@@ -27,8 +27,8 @@ using namespace mlir::LLVM;
 /// Parses DWARF expression arguments with respect to the DWARF operation
 /// opcode. Some DWARF expression operations have a specific number of operands
 /// and may appear in a textual form.
-static LogicalResult parseExpressionArg(AsmParser &parser, uint64_t opcode,
-                                        SmallVector<uint64_t> &args);
+static ParseResult parseExpressionArg(AsmParser &parser, uint64_t opcode,
+                                      SmallVector<uint64_t> &args);
 
 /// Prints DWARF expression arguments with respect to the specific DWARF
 /// operation. Some operands are printed in their textual form.
@@ -144,8 +144,8 @@ DIExpressionAttr DIExpressionAttr::get(MLIRContext *context) {
   return get(context, ArrayRef<DIExpressionElemAttr>({}));
 }
 
-LogicalResult parseExpressionArg(AsmParser &parser, uint64_t opcode,
-                                 SmallVector<uint64_t> &args) {
+ParseResult parseExpressionArg(AsmParser &parser, uint64_t opcode,
+                               SmallVector<uint64_t> &args) {
   auto operandParser = [&]() -> LogicalResult {
     uint64_t operand = 0;
     if (!args.empty() && opcode == llvm::dwarf::DW_OP_LLVM_convert) {

mlir/test/lib/Dialect/Test/TestTypes.cpp

@@ -90,14 +90,14 @@ static llvm::hash_code test::hash_value(const FieldInfo &fi) { // NOLINT
 // TestCustomType
 //===----------------------------------------------------------------------===//
 
-static LogicalResult parseCustomTypeA(AsmParser &parser, int &aResult) {
+static ParseResult parseCustomTypeA(AsmParser &parser, int &aResult) {
   return parser.parseInteger(aResult);
 }
 
 static void printCustomTypeA(AsmPrinter &printer, int a) { printer << a; }
 
-static LogicalResult parseCustomTypeB(AsmParser &parser, int a,
-                                      std::optional<int> &bResult) {
+static ParseResult parseCustomTypeB(AsmParser &parser, int a,
+                                    std::optional<int> &bResult) {
   if (a < 0)
     return success();
   for (int i : llvm::seq(0, a))
@@ -116,7 +116,7 @@ static void printCustomTypeB(AsmPrinter &printer, int a, std::optional<int> b) {
   printer << *b;
 }
 
-static LogicalResult parseFooString(AsmParser &parser, std::string &foo) {
+static ParseResult parseFooString(AsmParser &parser, std::string &foo) {
   std::string result;
   if (parser.parseString(&result))
     return failure();
@@ -128,7 +128,7 @@ static void printFooString(AsmPrinter &printer, StringRef foo) {
   printer << '"' << foo << '"';
 }
 
-static LogicalResult parseBarString(AsmParser &parser, StringRef foo) {
+static ParseResult parseBarString(AsmParser &parser, StringRef foo) {
   return parser.parseKeyword(foo);
 }