[llvm-branch-commits] [clang] [CIR] Move the CIR enums off the legacy EnumAttrInfo hierarchy (PR #220889)

Henrich Lauko via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Sun Sep 6 12:21:12 PDT 2026


https://github.com/xlauko updated https://github.com/llvm/llvm-project/pull/220889

>From 6883a31d9e8ae9949b3608de8d47eb156c729f9c Mon Sep 17 00:00:00 2001
From: Henrich Lauko <hlauko at nvidia.com>
Date: Thu, 3 Sep 2026 12:44:31 +0000
Subject: [PATCH] [CIR] Move the CIR enums off the legacy EnumAttrInfo
 hierarchy

MLIR has two enum hierarchies. `EnumAttrInfo` doubles as an `IntegerAttr`
constraint, so every CIR enum had to clear `genSpecializedAttr` to say it did
not want one. `EnumInfo` describes a C++ enum and nothing more.

Derive the CIR bases from `I32Enum`, `I64Enum` and `I32BitEnum`, and widen
`CIR_EnumAttr` to the `EnumInfo` that upstream `EnumAttr` already takes. The
flag no longer exists to clear. `FPClassTestEnum` gets unquoted printing from
`BitEnumBase` rather than overriding `printBitEnumQuoted`, and
`CIR_KnownFuncKind` drops a `parameterPrinter` the generated `operator<<`
now covers, still spelling `#cir.func_identity<"std::find">`.

AMDGPU wraps an `I32Enum` in an `EnumAttr` with this same bracketed format.
Parsing moves to the generated `FieldParser`, whose diagnostic names the
accepted spellings, so two `expected-error` lines change. Generated attribute
code drops 16 KB as 28 inlined parsers collapse into it.
---
 .../include/clang/CIR/Dialect/IR/CIRAttrs.td  |  76 ++++---------
 .../clang/CIR/Dialect/IR/CIRCUDAAttrs.td      |   6 +-
 .../clang/CIR/Dialect/IR/CIREnumAttr.td       |  22 ++--
 clang/include/clang/CIR/Dialect/IR/CIROps.td  | 106 ++++++------------
 .../include/clang/CIR/Dialect/IR/CIRTypes.td  |   4 +-
 clang/test/CIR/IR/invalid-call.cir            |   2 +-
 clang/test/CIR/IR/invalid-lang-attr.cir       |   2 +-
 7 files changed, 74 insertions(+), 144 deletions(-)

diff --git a/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td b/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
index f08a127dcd192..838d8975177fd 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
@@ -78,16 +78,12 @@ class CIR_UnitAttr<string name, string attrMnemonic, list<Trait> traits = []>
 
 // TODO: Add cases for other languages that Clang supports.
 
-def CIR_SourceLanguage : CIR_I32EnumAttr<"SourceLanguage", "source language", [
+def CIR_SourceLanguage : CIR_I32Enum<"SourceLanguage", "source language", [
   I32EnumAttrCase<"C", 1, "c">,
   I32EnumAttrCase<"CXX", 2, "cxx">,
   I32EnumAttrCase<"OpenCLC", 3, "opencl_c">,
   I32EnumAttrCase<"OpenCLCXX", 4, "opencl_cxx">
-]> {
-  // The enum attr class is defined in `CIR_SourceLanguageAttr` below,
-  // so that it can define extra class methods.
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_SourceLanguageAttr : CIR_EnumAttr<CIR_SourceLanguage, "lang"> {
 
@@ -123,14 +119,12 @@ def CIR_SourceLanguageAttr : CIR_EnumAttr<CIR_SourceLanguage, "lang"> {
 // ArgPassingKind + RecordLayoutAttr
 //===----------------------------------------------------------------------===//
 
-def CIR_ArgPassingKind : CIR_I32EnumAttr<
+def CIR_ArgPassingKind : CIR_I32Enum<
     "ArgPassingKind", "record argument passing eligibility", [
   I32EnumAttrCase<"CanPassInRegs", 0, "can_pass_in_regs">,
   I32EnumAttrCase<"CannotPassInRegs", 1, "cannot_pass_in_regs">,
   I32EnumAttrCase<"CanNeverPassInRegs", 2, "can_never_pass_in_regs">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_RecordLayoutAttr : CIR_Attr<"RecordLayout", "record_layout", [
     // record_align is consumed as an llvm::Align, whose constructor asserts a
@@ -732,14 +726,12 @@ def CIR_MethodAttr : CIR_ValueLikeAttr<"Method", "method"> {
 // CmpThreeWayInfoAttr
 //===----------------------------------------------------------------------===//
 
-def CIR_CmpOrdering : CIR_I32EnumAttr<
+def CIR_CmpOrdering : CIR_I32Enum<
   "CmpOrdering", "three-way comparison ordering kind", [
     I32EnumAttrCase<"Strong", 0, "strong">,
     I32EnumAttrCase<"Weak", 1, "weak">,
     I32EnumAttrCase<"Partial", 2, "partial">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CmpThreeWayInfoAttr : CIR_Attr<"CmpThreeWayInfo", "cmp3way_info"> {
   let summary = "Holds information about a three-way comparison operation";
@@ -816,7 +808,7 @@ def CIR_CmpThreeWayInfoAttr : CIR_Attr<"CmpThreeWayInfo", "cmp3way_info"> {
 // FenvAttr
 //===----------------------------------------------------------------------===//
 
-def CIR_FPDynamicRoundingMode : CIR_I32EnumAttr<
+def CIR_FPDynamicRoundingMode : CIR_I32Enum<
     "FPDynamicRoundingMode", "floating-point dynamic rounding mode", [
   I32EnumAttrCase<"ToNearest", 0, "tonearest">,
   I32EnumAttrCase<"Downward", 1, "downward">,
@@ -830,10 +822,9 @@ def CIR_FPDynamicRoundingMode : CIR_I32EnumAttr<
     If the actual dynamic rounding mode differs from this value, the behavior
     is undefined.
   }];
-  let genSpecializedAttr = 0;
 }
 
-def CIR_FPExceptionMode : CIR_I32EnumAttr<
+def CIR_FPExceptionMode : CIR_I32Enum<
     "FPExceptionMode", "floating-point exception mode", [
   I32EnumAttrCase<"Unknown", 0, "unknown">,
   I32EnumAttrCase<"Masked", 1, "masked">,
@@ -844,7 +835,6 @@ def CIR_FPExceptionMode : CIR_I32EnumAttr<
     executed. If the actual exception mode differs from this value, the
     behavior is undefined.
   }];
-  let genSpecializedAttr = 0;
 }
 
 def CIR_FenvAttr : CIR_Attr<"Fenv", "fenv"> {
@@ -1351,13 +1341,11 @@ def CIR_ConstComplexAttr : CIR_ValueLikeAttr<"ConstComplex", "const_complex"> {
 // VisibilityKind
 //===----------------------------------------------------------------------===//
 
-def CIR_VisibilityKind : CIR_I32EnumAttr<"VisibilityKind", "C/C++ visibility", [
+def CIR_VisibilityKind : CIR_I32Enum<"VisibilityKind", "C/C++ visibility", [
   I32EnumAttrCase<"Default", 0, "default">,
   I32EnumAttrCase<"Hidden", 1, "hidden">,
   I32EnumAttrCase<"Protected", 2, "protected">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 //===----------------------------------------------------------------------===//
 // GloblCtorAttr
@@ -1417,14 +1405,12 @@ def CIR_GlobalDtorAttr : CIR_GlobalCtorDtor<"Dtor", "dtor"> {
 // CXX SpecialMemberAttr
 //===----------------------------------------------------------------------===//
 
-def CIR_CtorKind : CIR_I32EnumAttr<"CtorKind", "CXX Constructor Kind", [
+def CIR_CtorKind : CIR_I32Enum<"CtorKind", "CXX Constructor Kind", [
   I32EnumAttrCase<"Custom", 0, "custom">,
   I32EnumAttrCase<"Default", 1, "default">,
   I32EnumAttrCase<"Copy", 2, "copy">,
   I32EnumAttrCase<"Move", 3, "move">,
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CXXCtorAttr : CIR_Attr<"CXXCtor", "cxx_ctor"> {
   let summary = "Marks a function as a C++ constructor";
@@ -1485,12 +1471,10 @@ def CIR_CXXDtorAttr : CIR_Attr<"CXXDtor", "cxx_dtor"> {
   }];
 }
 
-def CIR_AssignKind : CIR_I32EnumAttr<"AssignKind", "CXX Assignment Operator Kind", [
+def CIR_AssignKind : CIR_I32Enum<"AssignKind", "CXX Assignment Operator Kind", [
   I32EnumAttrCase<"Copy", 0, "copy">,
   I32EnumAttrCase<"Move", 1, "move">,
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CXXAssignAttr : CIR_Attr<"CXXAssign", "cxx_assign"> {
   let summary = "Marks a function as a CXX assignment operator";
@@ -1526,16 +1510,10 @@ def CIR_CXXAssignAttr : CIR_Attr<"CXXAssign", "cxx_assign"> {
 
 // The standard library entities the identity tag can name. Each entry
 // pairs with one raised operation in CIRStdOps.td.
-def CIR_KnownFuncKind : CIR_I32EnumAttr<"KnownFuncKind",
+def CIR_KnownFuncKind : CIR_I32Enum<"KnownFuncKind",
     "known standard library entity", [
   I32EnumAttrCase<"StdFind", 1, "std::find">,
-]> {
-  let genSpecializedAttr = 0;
-  // A name like std::find is not a bare identifier, so print it as a quoted
-  // string. The enum parser already reads a quoted string back.
-  let parameterPrinter =
-      "$_printer.printKeywordOrString(" # symbolToStringFnName # "($_self))";
-}
+]>;
 
 def CIR_FuncIdentityAttr : CIR_Attr<"FuncIdentity", "func_identity"> {
   let summary = "Identifies a function as a known standard library entity";
@@ -1821,13 +1799,11 @@ def CIR_TypeInfoAttr : CIR_ValueLikeAttr<"TypeInfo", "typeinfo"> {
 // InlineKindAttr
 //===----------------------------------------------------------------------===//
 
-def CIR_InlineKind : CIR_I32EnumAttr<"InlineKind", "inlineKind", [
+def CIR_InlineKind : CIR_I32Enum<"InlineKind", "inlineKind", [
   I32EnumAttrCase<"NoInline", 1, "no_inline">,
   I32EnumAttrCase<"AlwaysInline", 2, "always_inline">,
   I32EnumAttrCase<"InlineHint", 3, "inline_hint">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_InlineKindAttr: CIR_EnumAttr<CIR_InlineKind, "inline_kind"> {
   let summary = "Inline kind attribute";
@@ -1937,7 +1913,7 @@ def CIR_BlockAddrDiffAttr
 // Side Effect
 //===----------------------------------------------------------------------===//
 
-def CIR_SideEffect : CIR_I32EnumAttr<
+def CIR_SideEffect : CIR_I32Enum<
     "SideEffect", "allowed side effects of a function", [
       I32EnumAttrCase<"All", 0, "all">,
       I32EnumAttrCase<"Pure", 1, "pure">,
@@ -1964,8 +1940,6 @@ def CIR_SideEffect : CIR_I32EnumAttr<
     %2 = cir.call @add(%0, %1) : (!s32i, !s32i) -> !s32i side_effect(const)
     ```
   }];
-
-  let genSpecializedAttr = 0;
 }
 
 def CIR_SideEffectAttr : CIR_EnumAttr<CIR_SideEffect, "side_effect">;
@@ -2123,18 +2097,16 @@ def CIR_ASTVarDeclAttr : CIR_AST<"VarDecl", "var.decl", [
 // CIR-native thread-local storage kind. Cases mirror clang::VarDecl::TLSKind
 // so CIRGen can map between them, but CIR does not depend on the underlying
 // clang enumerator values.
-def CIR_TLSKind : CIR_I32EnumAttr<"TLSKind", "thread-local storage kind", [
+def CIR_TLSKind : CIR_I32Enum<"TLSKind", "thread-local storage kind", [
   I32EnumAttrCase<"None", 0, "none">,          // clang::VarDecl::TLS_None
   I32EnumAttrCase<"Static", 1, "static">,      // clang::VarDecl::TLS_Static
   I32EnumAttrCase<"Dynamic", 2, "dynamic">     // clang::VarDecl::TLS_Dynamic
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 // CIR-native template-specialization kind. Cases mirror
 // clang::TemplateSpecializationKind.
 def CIR_TemplateSpecializationKind
-    : CIR_I32EnumAttr<"TemplateSpecializationKind",
+    : CIR_I32Enum<"TemplateSpecializationKind",
                       "template specialization kind", [
   // clang::TSK_Undeclared
   I32EnumAttrCase<"Undeclared", 0, "undeclared">,
@@ -2148,9 +2120,7 @@ def CIR_TemplateSpecializationKind
   // clang::TSK_ExplicitInstantiationDefinition
   I32EnumAttrCase<"ExplicitInstantiationDefinition", 4,
                   "explicit_instantiation_definition">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_StaticLocalInfoAttr
     : CIR_Attr<"StaticLocalInfo", "static_local_info"> {
diff --git a/clang/include/clang/CIR/Dialect/IR/CIRCUDAAttrs.td b/clang/include/clang/CIR/Dialect/IR/CIRCUDAAttrs.td
index 2d5f70ec9c3ad..1684615c862b2 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRCUDAAttrs.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRCUDAAttrs.td
@@ -70,14 +70,12 @@ def CIR_CUDABinaryHandleAttr : CIR_Attr<
 
 // No wrapper attribute: the kind is only ever printed by
 // CIR_CUDAVarRegistrationInfoAttr's own assembly format.
-def CIR_CUDADeviceVarKind : CIR_I32EnumAttr<"CUDADeviceVarKind",
+def CIR_CUDADeviceVarKind : CIR_I32Enum<"CUDADeviceVarKind",
     "CUDA device variable kind", [
   I32EnumAttrCase<"Variable", 0>,
   I32EnumAttrCase<"Surface", 1>,   // Future
   I32EnumAttrCase<"Texture", 2>,   // Future
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 // Attribute carrying device variable registration flags
 def CIR_CUDAVarRegistrationInfoAttr : CIR_Attr<"CUDAVarRegistrationInfo", "cu.var_registration"> {
diff --git a/clang/include/clang/CIR/Dialect/IR/CIREnumAttr.td b/clang/include/clang/CIR/Dialect/IR/CIREnumAttr.td
index 966ab85698325..dd3761c8250e8 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIREnumAttr.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIREnumAttr.td
@@ -16,19 +16,24 @@
 include "mlir/IR/EnumAttr.td"
 include "clang/CIR/Dialect/IR/CIRDialect.td"
 
-class CIR_I32EnumAttr<string name, string summary, list<I32EnumAttrCase> cases>
-    : I32EnumAttr<name, summary, cases> {
+// A CIR enum describes a C++ enum and nothing else. It either gets a
+// `CIR_EnumAttr` wrapper below, or it is used as a raw parameter of some other
+// attribute, so it derives from `EnumInfo` rather than the older
+// `EnumAttrInfo`, which doubles as an `IntegerAttr` constraint and would need
+// its `genSpecializedAttr` cleared on every enum.
+class CIR_I32Enum<string name, string summary, list<EnumCase> cases>
+    : I32Enum<name, summary, cases> {
   let cppNamespace = "::cir";
 }
 
-class CIR_I64EnumAttr<string name, string summary, list<I64EnumAttrCase> cases>
-    : I64EnumAttr<name, summary, cases> {
+class CIR_I64Enum<string name, string summary, list<EnumCase> cases>
+    : I64Enum<name, summary, cases> {
   let cppNamespace = "::cir";
 }
 
-class CIR_I32BitEnumAttr<string name, string summary,
+class CIR_I32BitEnum<string name, string summary,
                          list<BitEnumCaseBase> cases>
-    : I32BitEnumAttr<name, summary, cases> {
+    : I32BitEnum<name, summary, cases> {
   let cppNamespace = "::cir";
 }
 
@@ -37,7 +42,7 @@ class CIR_I32BitEnumAttr<string name, string summary,
 // delimiters gets the dialect's own `#cir.cleanup<all>` instead. Operations
 // that want the bare keyword wrap the argument in the `enum` directive, as in
 // `enum($cleanupKind)`. Naming the argument directly prints `<all>`.
-class CIR_EnumAttr<EnumAttrInfo info, string name = "", list<Trait> traits = []>
+class CIR_EnumAttr<EnumInfo info, string name = "", list<Trait> traits = []>
     : EnumAttr<CIR_Dialect, info, name, traits> {
   let assemblyFormat = "`<` $value `>`";
 }
@@ -47,7 +52,7 @@ class CIR_DefaultValuedEnumParameter<EnumAttrInfo info, string value = "">
   let defaultValue = value;
 }
 
-def CIR_LangAddressSpace : CIR_I32EnumAttr<
+def CIR_LangAddressSpace : CIR_I32Enum<
   "LangAddressSpace", "language address space kind", [
   I32EnumAttrCase<"Default", 0, "default">,
   I32EnumAttrCase<"OffloadPrivate", 1, "offload_private">,
@@ -64,7 +69,6 @@ def CIR_LangAddressSpace : CIR_I32EnumAttr<
     OpenCL `__local`) before target lowering.
   }];
 
-  let genSpecializedAttr = 0;
 }
 
 #endif // CLANG_CIR_DIALECT_IR_CIRENUMATTR_TD
diff --git a/clang/include/clang/CIR/Dialect/IR/CIROps.td b/clang/include/clang/CIR/Dialect/IR/CIROps.td
index cd0a401d9b77f..7a9ecbe435b3f 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIROps.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIROps.td
@@ -187,7 +187,7 @@ defvar CIR_DynamicMemoryEffects = 0;
 // CastOp
 //===----------------------------------------------------------------------===//
 
-def CIR_CastKind : CIR_I32EnumAttr<"CastKind", "cast kind", [
+def CIR_CastKind : CIR_I32Enum<"CastKind", "cast kind", [
   I32EnumAttrCase<"bitcast", 1>,
   // CK_LValueBitCast
   // CK_LValueToRValueBitCast
@@ -260,9 +260,7 @@ def CIR_CastKind : CIR_I32EnumAttr<"CastKind", "cast kind", [
   // Enums below are specific to CIR and don't have a correspondence to classic
   // codegen:
   I32EnumAttrCase<"bool_to_float", 1000>,
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CastKindAttr : CIR_EnumAttr<CIR_CastKind, "cast">;
 
@@ -413,13 +411,11 @@ def CIR_BuiltinIntCastOp : CIR_Op<"builtin_int_cast", [Pure]> {
 // DynamicCastOp
 //===----------------------------------------------------------------------===//
 
-def CIR_DynamicCastKind : CIR_I32EnumAttr<
+def CIR_DynamicCastKind : CIR_I32Enum<
   "DynamicCastKind", "dynamic cast kind", [
     I32EnumAttrCase<"Ptr", 0, "ptr">,
     I32EnumAttrCase<"Ref", 1, "ref">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_DynamicCastKindAttr
     : CIR_EnumAttr<CIR_DynamicCastKind, "dynamic_cast">;
@@ -652,7 +648,7 @@ def CIR_SignBitOp : CIR_Op<"signbit", [Pure]> {
 // C/C++ memory order definitions
 //===----------------------------------------------------------------------===//
 
-def CIR_MemOrder : CIR_I32EnumAttr<
+def CIR_MemOrder : CIR_I32Enum<
   "MemOrder", "Memory order according to C++11 memory model", [
     I32EnumAttrCase<"Relaxed", 0, "relaxed">,
     I32EnumAttrCase<"Consume", 1, "consume">,
@@ -660,9 +656,7 @@ def CIR_MemOrder : CIR_I32EnumAttr<
     I32EnumAttrCase<"Release", 3, "release">,
     I32EnumAttrCase<"AcquireRelease", 4, "acq_rel">,
     I32EnumAttrCase<"SequentiallyConsistent", 5, "seq_cst">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_MemOrderAttr : CIR_EnumAttr<CIR_MemOrder, "mem_order">;
 
@@ -670,7 +664,7 @@ def CIR_MemOrderAttr : CIR_EnumAttr<CIR_MemOrder, "mem_order">;
 // C/C++ sync scope definitions
 //===----------------------------------------------------------------------===//
 
-def CIR_SyncScopeKind : CIR_I32EnumAttr<"SyncScopeKind", "sync scope kind", [
+def CIR_SyncScopeKind : CIR_I32Enum<"SyncScopeKind", "sync scope kind", [
   I32EnumAttrCase<"SingleThread", 0, "single_thread">,
   I32EnumAttrCase<"System", 1, "system">,
   I32EnumAttrCase<"Device", 2, "device">,
@@ -691,9 +685,7 @@ def CIR_SyncScopeKind : CIR_I32EnumAttr<"SyncScopeKind", "sync scope kind", [
   I32EnumAttrCase<"OpenCLDevice", 13, "opencl_device">,
   I32EnumAttrCase<"OpenCLAllSVMDevices", 14, "opencl_all_svm_devices">,
   I32EnumAttrCase<"OpenCLSubGroup", 15, "opencl_sub_group">,
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_SyncScopeKindAttr : CIR_EnumAttr<CIR_SyncScopeKind, "sync_scope">;
 
@@ -1370,13 +1362,11 @@ def CIR_ScopeOp : CIR_RegionBranchOpBase<"scope", [
 // CleanupScopeOp
 //===----------------------------------------------------------------------===//
 
-def CIR_CleanupKind : CIR_I32EnumAttr<"CleanupKind", "cleanup kind", [
+def CIR_CleanupKind : CIR_I32Enum<"CleanupKind", "cleanup kind", [
   I32EnumAttrCase<"Normal", 1, "normal">,
   I32EnumAttrCase<"EH", 2, "eh">,
   I32EnumAttrCase<"All", 3, "all">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CleanupKindAttr : CIR_EnumAttr<CIR_CleanupKind, "cleanup"> {
   let summary = "Cleanup kind attribute";
@@ -1540,14 +1530,12 @@ def CIR_CmpThreeWayOp : CIR_Op<"cmp3way", [Pure, SameTypeOperands]> {
 // SwitchOp
 //===----------------------------------------------------------------------===//
 
-def CIR_CaseOpKind : CIR_I32EnumAttr<"CaseOpKind", "case kind", [
+def CIR_CaseOpKind : CIR_I32Enum<"CaseOpKind", "case kind", [
   I32EnumAttrCase<"Default", 0, "default">,
   I32EnumAttrCase<"Equal", 1, "equal">,
   I32EnumAttrCase<"Anyof", 2, "anyof">,
   I32EnumAttrCase<"Range", 3, "range">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CaseOpKindAttr : CIR_EnumAttr<CIR_CaseOpKind, "case">;
 
@@ -2548,7 +2536,7 @@ def CIR_ForOp : CIR_LoopOpBase<"for"> {
 // CmpOp
 //===----------------------------------------------------------------------===//
 
-def CIR_CmpOpKind : CIR_I32EnumAttr<"CmpOpKind", "compare operation kind", [
+def CIR_CmpOpKind : CIR_I32Enum<"CmpOpKind", "compare operation kind", [
   I32EnumAttrCase<"lt", 0>,
   I32EnumAttrCase<"le", 1>,
   I32EnumAttrCase<"gt", 2>,
@@ -2557,9 +2545,7 @@ def CIR_CmpOpKind : CIR_I32EnumAttr<"CmpOpKind", "compare operation kind", [
   I32EnumAttrCase<"ne", 5>,
   I32EnumAttrCase<"one", 6>,
   I32EnumAttrCase<"uno", 7>
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CmpOpKindAttr : CIR_EnumAttr<CIR_CmpOpKind, "cmp">;
 
@@ -3320,7 +3306,7 @@ def CIR_TernaryOp : CIR_RegionBranchOpBase<"ternary", [
 // lowering, specially useful for C++ support.
 
 /// An enumeration for the kinds of linkage for global values.
-def CIR_GlobalLinkageKind : CIR_I32EnumAttr<
+def CIR_GlobalLinkageKind : CIR_I32Enum<
   "GlobalLinkageKind", "linkage kind", [
     // Externally visible function
     I32EnumAttrCase<"ExternalLinkage", 0, "external">,
@@ -3345,9 +3331,7 @@ def CIR_GlobalLinkageKind : CIR_I32EnumAttr<
     I32EnumAttrCase<"ExternalWeakLinkage", 9, "extern_weak">,
     // Tentative definitions.
     I32EnumAttrCase<"CommonLinkage", 10, "common">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_GlobalLinkageKindAttr
     : CIR_EnumAttr<CIR_GlobalLinkageKind, "linkage">;
@@ -3356,14 +3340,12 @@ def CIR_GlobalLinkageKindAttr
 // properties of a global variable will be added over time as more of ClangIR
 // is upstreamed.
 
-def CIR_TLSModel : CIR_I32EnumAttr<"TLSModel", "TLS model", [
+def CIR_TLSModel : CIR_I32Enum<"TLSModel", "TLS model", [
   I32EnumAttrCase<"GeneralDynamic", 1, "tls_dyn">,
   I32EnumAttrCase<"LocalDynamic", 2, "tls_local_dyn">,
   I32EnumAttrCase<"InitialExec", 3, "tls_init_exec">,
   I32EnumAttrCase<"LocalExec", 4, "tls_local_exec">
-  ]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_TLSModelAttr: CIR_EnumAttr<CIR_TLSModel, "tls_model"> {
   let summary = "TLS Model attribute";
@@ -4201,15 +4183,13 @@ def CIR_OptionalPriorityAttr : OptionalAttr<
 // The enumeration cases are ordered to match `llvm::CallingConv`. The values
 // are CIR-specific and are not in sync with `llvm::CallingConv` or
 // `clang::CallingConv`.
-def CIR_CallingConv : CIR_I32EnumAttr<"CallingConv", "calling convention", [
+def CIR_CallingConv : CIR_I32Enum<"CallingConv", "calling convention", [
   I32EnumAttrCase<"C", 0, "c">,
   I32EnumAttrCase<"PTXKernel", 1, "ptx_kernel">,
   I32EnumAttrCase<"SpirFunction", 2, "spir_function">,
   I32EnumAttrCase<"SpirKernel", 3, "spir_kernel">,
   I32EnumAttrCase<"AMDGPUKernel", 4, "amdgpu_kernel">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_CallingConvAttr : CIR_EnumAttr<CIR_CallingConv, "calling_conv">;
 
@@ -4759,14 +4739,12 @@ def CIR_TryCallOp : CIR_CallOpBase<"try_call",[
 // AwaitOp
 //===----------------------------------------------------------------------===//
 
-def CIR_AwaitKind : CIR_I32EnumAttr<"AwaitKind", "await kind", [
+def CIR_AwaitKind : CIR_I32Enum<"AwaitKind", "await kind", [
   I32EnumAttrCase<"Init", 0, "init">,
   I32EnumAttrCase<"User", 1, "user">,
   I32EnumAttrCase<"Yield", 2, "yield">,
   I32EnumAttrCase<"Final", 3, "final">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_AwaitKindAttr : CIR_EnumAttr<CIR_AwaitKind, "await">;
 
@@ -5459,11 +5437,9 @@ def CIR_LifetimeEndOp : CIR_Op<"lifetime.end"> {
 // InlineAsmOp
 //===----------------------------------------------------------------------===//
 
-def CIR_AsmFlavor : CIR_I32EnumAttr<"AsmFlavor", "ATT or Intel",
+def CIR_AsmFlavor : CIR_I32Enum<"AsmFlavor", "ATT or Intel",
                                     [I32EnumAttrCase<"x86_att", 0>,
-                                     I32EnumAttrCase<"x86_intel", 1>]> {
-  let genSpecializedAttr = 0;
-}
+                                     I32EnumAttrCase<"x86_intel", 1>]>;
 
 def CIR_AsmFlavorAttr : CIR_EnumAttr<CIR_AsmFlavor, "asm_flavor">;
 
@@ -6577,15 +6553,13 @@ def CIR_ComplexSubOp : CIR_ComplexBinOp<"complex.sub"> {
 // ComplexMulOp and ComplexDivOp
 //===----------------------------------------------------------------------===//
 
-def CIR_ComplexRangeKind : CIR_I32EnumAttr<
+def CIR_ComplexRangeKind : CIR_I32Enum<
   "ComplexRangeKind", "complex multiplication and division implementation", [
     I32EnumAttrCase<"Full", 0, "full">,
     I32EnumAttrCase<"Improved", 1, "improved">,
     I32EnumAttrCase<"Promoted", 2, "promoted">,
     I32EnumAttrCase<"Basic", 3, "basic">,
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_ComplexRangeKindAttr
     : CIR_EnumAttr<CIR_ComplexRangeKind, "complex_range">;
@@ -6986,21 +6960,13 @@ def FPClass_All      : I32BitEnumAttrCaseGroup<"All",
     [FPClass_Nan, FPClass_Inf, FPClass_Fin], "fcAllFlags">;
 
 def FPClassTestEnum
-    : CIR_I32BitEnumAttr<"FPClassTest", "floating-point class test flags", [
+    : CIR_I32BitEnum<"FPClassTest", "floating-point class test flags", [
   FPClass_None, FPClass_SNan, FPClass_QNan, FPClass_NegInf, FPClass_NegNorm,
   FPClass_NegSub, FPClass_NegZero, FPClass_PosZero, FPClass_PosSub,
   FPClass_PosNorm, FPClass_PosInf, FPClass_Nan, FPClass_Inf, FPClass_Norm,
   FPClass_Sub, FPClass_Zero, FPClass_PosFin, FPClass_NegFin, FPClass_Fin,
   FPClass_Pos, FPClass_Neg, FPClass_All]> {
   let printBitEnumPrimaryGroups = 1;
-
-  // I32BitEnumAttr turns this on for backwards compatibility, which makes the
-  // operation printer quote every value that is not a single bit. Turning it
-  // off, together with the `enum` directive on cir.is_fp_class, gets a
-  // separator-aware parser and printer that spell every value unquoted.
-  let printBitEnumQuoted = 0;
-
-  let genSpecializedAttr = 0;
 }
 
 def CIR_FPClassTestAttr : CIR_EnumAttr<FPClassTestEnum, "fp_class">;
@@ -7042,15 +7008,13 @@ def CIR_IsFPClassOp : CIR_Op<"is_fp_class", [Pure]> {
 // Assume Operations
 //===----------------------------------------------------------------------===//
 
-def CIR_AssumeBundleKind : CIR_I32EnumAttr<
+def CIR_AssumeBundleKind : CIR_I32Enum<
   "AssumeBundleKind", "kind of cir.assume operand bundle", [
   I32EnumAttrCase<"None", 0>,
   I32EnumAttrCase<"Align", 1, "align">,
   I32EnumAttrCase<"SeparateStorage", 2, "separate_storage">,
   I32EnumAttrCase<"Dereferenceable", 3, "dereferenceable">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_AssumeBundleKindAttr
     : CIR_EnumAttr<CIR_AssumeBundleKind, "assume_bundle">;
@@ -8795,7 +8759,7 @@ def CIR_EndCatchOp : CIR_Op<"end_catch"> {
 // EH Operations: InitCatchParamOp
 //===----------------------------------------------------------------------===//
 
-def CIR_InitCatchKind : CIR_I32EnumAttr<
+def CIR_InitCatchKind : CIR_I32Enum<
   "InitCatchKind", "", [
     I32EnumAttrCase<"Reference", 0, "reference">,
     I32EnumAttrCase<"Pointer", 1, "pointer">,
@@ -8803,9 +8767,7 @@ def CIR_InitCatchKind : CIR_I32EnumAttr<
     I32EnumAttrCase<"Objc", 3, "objc">,
     I32EnumAttrCase<"TrivialCopy", 4, "trivial_copy">,
     I32EnumAttrCase<"NonTrivialCopy", 5, "non_trivial_copy">,
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_InitCatchKindAttr : CIR_EnumAttr<CIR_InitCatchKind, "init_catch">;
 
@@ -8920,7 +8882,7 @@ def CIR_TokenNoneOp : CIR_Op<"token.none", [
 // Atomic operations
 //===----------------------------------------------------------------------===//
 
-def CIR_AtomicFetchKind : CIR_I32EnumAttr<
+def CIR_AtomicFetchKind : CIR_I32Enum<
   "AtomicFetchKind", "Binary opcode for atomic fetch-and-update operations", [
     I32EnumAttrCase<"Add", 0, "add">,
     I32EnumAttrCase<"Sub", 1, "sub">,
@@ -8939,9 +8901,7 @@ def CIR_AtomicFetchKind : CIR_I32EnumAttr<
     I32EnumAttrCase<"Minimum", 11, "minimum">,
     I32EnumAttrCase<"MaximumNum", 12, "maximum_num">,
     I32EnumAttrCase<"MinimumNum", 13, "minimum_num">
-]> {
-  let genSpecializedAttr = 0;
-}
+]>;
 
 def CIR_AtomicFetchKindAttr
     : CIR_EnumAttr<CIR_AtomicFetchKind, "atomic_fetch">;
diff --git a/clang/include/clang/CIR/Dialect/IR/CIRTypes.td b/clang/include/clang/CIR/Dialect/IR/CIRTypes.td
index c969bdbe32239..d0bcb885bc634 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRTypes.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRTypes.td
@@ -745,7 +745,7 @@ def CIR_BitFieldType : CIR_Type<"BitField", "bitfield", [
 // What a record member holds, and whether its extent is a declared one.
 //===----------------------------------------------------------------------===//
 
-def CIR_RecordMemberKind : CIR_I32EnumAttr<
+def CIR_RecordMemberKind : CIR_I32Enum<
     "RecordMemberKind", "what a record member holds", [
   I32EnumAttrCase<"Data", 0, "data">,
   I32EnumAttrCase<"Pad", 1, "pad">,
@@ -783,8 +783,6 @@ def CIR_RecordMemberKind : CIR_I32EnumAttr<
     whose trailing member is a unit of unnamed bit-fields keeps that unit in
     its data size.
   }];
-
-  let genSpecializedAttr = 0;
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/clang/test/CIR/IR/invalid-call.cir b/clang/test/CIR/IR/invalid-call.cir
index e7ac24ea0bae0..c21c32563c70f 100644
--- a/clang/test/CIR/IR/invalid-call.cir
+++ b/clang/test/CIR/IR/invalid-call.cir
@@ -100,7 +100,7 @@ cir.func @f15() {
 cir.func private @f16()
 cir.func @f17() {
   // expected-error at +2{{failed to parse CIR_InlineKindAttr parameter 'value' which is to be a `::cir::InlineKind`}}
-  // expected-error at below{{expected ::cir::InlineKind to be one of: no_inline, always_inline, inline_hint}}
+  // expected-error at below{{expected one of [no_inline, always_inline, inline_hint] for inlineKind}}
   cir.call @f16() { inline_kind = #cir.inline_kind<nonsense> } : () -> () 
   cir.return
 }
diff --git a/clang/test/CIR/IR/invalid-lang-attr.cir b/clang/test/CIR/IR/invalid-lang-attr.cir
index ffe523b1ad401..793f38a2fe743 100644
--- a/clang/test/CIR/IR/invalid-lang-attr.cir
+++ b/clang/test/CIR/IR/invalid-lang-attr.cir
@@ -1,5 +1,5 @@
 // RUN: cir-opt %s -verify-diagnostics
 
-// expected-error at below {{expected ::cir::SourceLanguage to be one of}}
+// expected-error at below {{expected one of [c, cxx, opencl_c, opencl_cxx] for source language}}
 // expected-error at below {{failed to parse CIR_SourceLanguageAttr parameter 'value'}}
 module attributes {cir.lang = #cir.lang<dummy>} { }



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