diff --git a/flang/test/Fir/fir-types.fir b/flang/test/Fir/fir-types.fir
--- a/flang/test/Fir/fir-types.fir
+++ b/flang/test/Fir/fir-types.fir
@@ -25,12 +25,14 @@
 // CHECK-LABEL: func private @dvd4() -> !fir.type<derived4(p:i8){f:f32}>
 // CHECK-LABEL: func private @dvd5() -> !fir.type<derived5(p1:i8,p2:i8,p3:i8,p4:i8,p5:i8){f1:f32,f2:f32,f3:f32,f4:f32,f5:f32,f6:f32,f7:f32,f8:f32}>
 // CHECK-LABEL: func private @dvd6() -> !fir.type<derived6{f:!fir.ptr<!fir.type<derived6>>}>
+// CHECK-LABEL: func private @dvd7() -> !fir.type<derived_with_field_name_same_as_integer_type{i32:f32}>
 func private @dvd1() -> !fir.type<derived1>
 func private @dvd2() -> !fir.type<derived2(p:i32)>
 func private @dvd3() -> !fir.type<derived3{f:f32}>
 func private @dvd4() -> !fir.type<derived4(p:i8){f:f32}>
 func private @dvd5() -> !fir.type<derived5(p1:i8,p2:i8,p3:i8,p4:i8,p5:i8){f1:f32,f2:f32,f3:f32,f4:f32,f5:f32,f6:f32,f7:f32,f8:f32}>
 func private @dvd6() -> !fir.type<derived6{f:!fir.ptr<!fir.type<derived6>>}>
+func private @dvd7() -> !fir.type<derived_with_field_name_same_as_integer_type{i32:f32}>
 
 // FIR array types
 // CHECK-LABEL: func private @arr1() -> !fir.array<10xf32>
diff --git a/mlir/lib/Dialect/Quant/IR/TypeParser.cpp b/mlir/lib/Dialect/Quant/IR/TypeParser.cpp
--- a/mlir/lib/Dialect/Quant/IR/TypeParser.cpp
+++ b/mlir/lib/Dialect/Quant/IR/TypeParser.cpp
@@ -29,15 +29,16 @@
   // Parse storage type (alpha_ident, integer_literal).
   StringRef identifier;
   unsigned storageTypeWidth = 0;
-  if (failed(parser.parseOptionalKeyword(&identifier))) {
-    // If we didn't parse a keyword, this must be a signed type.
-    if (parser.parseType(type))
+  OptionalParseResult result = parser.parseOptionalType(type);
+  if (result.hasValue()) {
+    if (!succeeded(*result)) {
+      parser.parseType(type);
       return nullptr;
-    isSigned = true;
+    }
+    isSigned = !type.isUnsigned();
     storageTypeWidth = type.getWidth();
-
+  } else if (succeeded(parser.parseKeyword(&identifier))) {
     // Otherwise, this must be an unsigned integer (`u` integer-literal).
-  } else {
     if (!identifier.consume_front("u")) {
       parser.emitError(typeLoc, "illegal storage type prefix");
       return nullptr;
@@ -48,6 +49,8 @@
     }
     isSigned = false;
     type = parser.getBuilder().getIntegerType(storageTypeWidth);
+  } else {
+    return nullptr;
   }
 
   if (storageTypeWidth == 0 ||
diff --git a/mlir/lib/Parser/DialectSymbolParser.cpp b/mlir/lib/Parser/DialectSymbolParser.cpp
--- a/mlir/lib/Parser/DialectSymbolParser.cpp
+++ b/mlir/lib/Parser/DialectSymbolParser.cpp
@@ -250,7 +250,7 @@
 
   /// Returns true if the current token corresponds to a keyword.
   bool isCurrentTokenAKeyword() const {
-    return parser.getToken().is(Token::bare_identifier) ||
+    return parser.getToken().isAny(Token::bare_identifier, Token::inttype) ||
            parser.getToken().isKeyword();
   }
 
diff --git a/mlir/test/mlir-tblgen/types.mlir b/mlir/test/mlir-tblgen/types.mlir
--- a/mlir/test/mlir-tblgen/types.mlir
+++ b/mlir/test/mlir-tblgen/types.mlir
@@ -504,3 +504,27 @@
   "test.indexElementsAttr"() {attr = dense<[1, 2]>:tensor<2xi32>} : () -> ()
   return
 }
+
+// -----
+
+// CHECK-LABEL: @struct_success
+func @struct_success() {
+  "test.simple_struct"() : () -> (!test.struct<{a, i32}, {b, f64}>)
+  return
+}
+
+// -----
+
+// CHECK-LABEL: @struct_with_field_names_like_types
+func @struct_with_field_names_like_types() {
+  "test.struct_with_field_names_like_types"() : () -> (!test.struct<{i32, i32}, {f64, f64}>)
+  return
+}
+
+// -----
+
+func @struct_bad_keywords() {
+  // expected-error@+1 {{expected valid keyword}}
+  "test.struct_bad_keywords"() : () -> (!test.struct<{42, i32}>)
+  return
+}