[MLIR][LLVM] Add DebugNameTableKind to DICompileUnit (#87974)

Add the DebugNameTableKind field to DICompileUnit, along with its
importer & exporter.

flang/lib/Optimizer/Transforms/AddDebugFoundation.cpp

@@ -65,7 +65,7 @@ void AddDebugFoundationPass::runOnOperation() {
   mlir::LLVM::DIFileAttr fileAttr = getFileAttr(inputFilePath);
   mlir::StringAttr producer = mlir::StringAttr::get(context, "Flang");
   mlir::LLVM::DICompileUnitAttr cuAttr = mlir::LLVM::DICompileUnitAttr::get(
-      context, mlir::DistinctAttr::create(mlir::UnitAttr::get(context)),
+      mlir::DistinctAttr::create(mlir::UnitAttr::get(context)),
       llvm::dwarf::getLanguage("DW_LANG_Fortran95"), fileAttr, producer,
       /*isOptimized=*/false, mlir::LLVM::DIEmissionKind::LineTablesOnly);
 

mlir/include/mlir-c/Dialect/LLVM.h

@@ -257,11 +257,19 @@ enum MlirLLVMDIEmissionKind {
 };
 typedef enum MlirLLVMDIEmissionKind MlirLLVMDIEmissionKind;
 
+enum MlirLLVMDINameTableKind {
+  MlirLLVMDINameTableKindDefault = 0,
+  MlirLLVMDINameTableKindGNU = 1,
+  MlirLLVMDINameTableKindNone = 2,
+  MlirLLVMDINameTableKindApple = 3,
+};
+typedef enum MlirLLVMDINameTableKind MlirLLVMDINameTableKind;
+
 /// Creates a LLVM DICompileUnit attribute.
 MLIR_CAPI_EXPORTED MlirAttribute mlirLLVMDICompileUnitAttrGet(
     MlirContext ctx, MlirAttribute id, unsigned int sourceLanguage,
     MlirAttribute file, MlirAttribute producer, bool isOptimized,
-    MlirLLVMDIEmissionKind emissionKind);
+    MlirLLVMDIEmissionKind emissionKind, MlirLLVMDINameTableKind nameTableKind);
 
 /// Creates a LLVM DIFlags attribute.
 MLIR_CAPI_EXPORTED MlirAttribute mlirLLVMDIFlagsAttrGet(MlirContext ctx,

mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td

@@ -350,8 +350,20 @@ def LLVM_DICompileUnitAttr : LLVM_Attr<"DICompileUnit", "di_compile_unit",
     "DIFileAttr":$file,
     OptionalParameter<"StringAttr">:$producer,
     "bool":$isOptimized,
-    "DIEmissionKind":$emissionKind
+    "DIEmissionKind":$emissionKind,
+    OptionalParameter<"DINameTableKind">:$nameTableKind
   );
+  let builders = [
+    AttrBuilderWithInferredContext<(ins
+      "DistinctAttr":$id, "unsigned":$sourceLanguage, "DIFileAttr":$file,
+      "StringAttr":$producer, "bool":$isOptimized,
+      "DIEmissionKind":$emissionKind,
+      CArg<"DINameTableKind", "DINameTableKind::Default">:$nameTableKind
+    ), [{
+      return $_get(id.getContext(), id, sourceLanguage, file, producer,
+                   isOptimized, emissionKind, nameTableKind);
+    }]>
+  ];
   let assemblyFormat = "`<` struct(params) `>`";
 }
 

mlir/include/mlir/Dialect/LLVMIR/LLVMEnums.td

@@ -393,6 +393,26 @@ def DIFlags : I32BitEnumAttr<
   let printBitEnumPrimaryGroups = 1;
 }
 
+//===----------------------------------------------------------------------===//
+// DINameTableKind
+//===----------------------------------------------------------------------===//
+
+def LLVM_DINameTableDefault : I64EnumAttrCase<"Default", 0>;
+def LLVM_DINameTableGNU     : I64EnumAttrCase<"GNU", 1>;
+def LLVM_DINameTableNone    : I64EnumAttrCase<"None", 2>;
+def LLVM_DINameTableApple   : I64EnumAttrCase<"Apple", 3>;
+
+def LLVM_DINameTableKind : I64EnumAttr<
+    "DINameTableKind",
+    "LLVM debug name table kind", [
+      LLVM_DINameTableDefault,
+      LLVM_DINameTableGNU,
+      LLVM_DINameTableNone,
+      LLVM_DINameTableApple,
+    ]> {
+  let cppNamespace = "::mlir::LLVM";
+}
+
 //===----------------------------------------------------------------------===//
 // DISubprogramFlags
 //===----------------------------------------------------------------------===//

mlir/lib/CAPI/Dialect/LLVM.cpp

@@ -206,11 +206,13 @@ MlirAttribute
 mlirLLVMDICompileUnitAttrGet(MlirContext ctx, MlirAttribute id,
                              unsigned int sourceLanguage, MlirAttribute file,
                              MlirAttribute producer, bool isOptimized,
-                             MlirLLVMDIEmissionKind emissionKind) {
+                             MlirLLVMDIEmissionKind emissionKind,
+                             MlirLLVMDINameTableKind nameTableKind) {
   return wrap(DICompileUnitAttr::get(
       unwrap(ctx), cast<DistinctAttr>(unwrap(id)), sourceLanguage,
       cast<DIFileAttr>(unwrap(file)), cast<StringAttr>(unwrap(producer)),
-      isOptimized, DIEmissionKind(emissionKind)));
+      isOptimized, DIEmissionKind(emissionKind),
+      DINameTableKind(nameTableKind)));
 }
 
 MlirAttribute mlirLLVMDIFlagsAttrGet(MlirContext ctx, uint64_t value) {

mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp

@@ -115,8 +115,8 @@ struct DIScopeForLLVMFuncOp
       }
 
       compileUnitAttr = LLVM::DICompileUnitAttr::get(
-          context, DistinctAttr::create(UnitAttr::get(context)),
-          llvm::dwarf::DW_LANG_C, fileAttr, StringAttr::get(context, "MLIR"),
+          DistinctAttr::create(UnitAttr::get(context)), llvm::dwarf::DW_LANG_C,
+          fileAttr, StringAttr::get(context, "MLIR"),
           /*isOptimized=*/true, LLVM::DIEmissionKind::LineTablesOnly);
     }
 

mlir/lib/Target/LLVMIR/DebugImporter.cpp

@@ -56,10 +56,14 @@ DIBasicTypeAttr DebugImporter::translateImpl(llvm::DIBasicType *node) {
 DICompileUnitAttr DebugImporter::translateImpl(llvm::DICompileUnit *node) {
   std::optional<DIEmissionKind> emissionKind =
       symbolizeDIEmissionKind(node->getEmissionKind());
+  std::optional<DINameTableKind> nameTableKind = symbolizeDINameTableKind(
+      static_cast<
+          std::underlying_type_t<llvm::DICompileUnit::DebugNameTableKind>>(
+          node->getNameTableKind()));
   return DICompileUnitAttr::get(
       context, getOrCreateDistinctID(node), node->getSourceLanguage(),
       translate(node->getFile()), getStringAttrOrNull(node->getRawProducer()),
-      node->isOptimized(), emissionKind.value());
+      node->isOptimized(), emissionKind.value(), nameTableKind.value());
 }
 
 DICompositeTypeAttr DebugImporter::translateImpl(llvm::DICompositeType *node) {

mlir/lib/Target/LLVMIR/DebugTranslation.cpp

@@ -104,7 +104,10 @@ llvm::DICompileUnit *DebugTranslation::translateImpl(DICompileUnitAttr attr) {
       attr.getIsOptimized(),
       /*Flags=*/"", /*RV=*/0, /*SplitName=*/{},
       static_cast<llvm::DICompileUnit::DebugEmissionKind>(
-          attr.getEmissionKind()));
+          attr.getEmissionKind()),
+      0, true, false,
+      static_cast<llvm::DICompileUnit::DebugNameTableKind>(
+          attr.getNameTableKind()));
 }
 
 /// Returns a new `DINodeT` that is either distinct or not, depending on

mlir/test/CAPI/llvm.c

@@ -264,9 +264,9 @@ static void testDebugInfoAttributes(MlirContext ctx) {
   // CHECK: #llvm.di_file<"foo" in "bar">
   mlirAttributeDump(file);
 
-  MlirAttribute compile_unit =
-      mlirLLVMDICompileUnitAttrGet(ctx, id, LLVMDWARFSourceLanguageC99, file,
-                                   foo, false, MlirLLVMDIEmissionKindFull);
+  MlirAttribute compile_unit = mlirLLVMDICompileUnitAttrGet(
+      ctx, id, LLVMDWARFSourceLanguageC99, file, foo, false,
+      MlirLLVMDIEmissionKindFull, MlirLLVMDINameTableKindDefault);
 
   // CHECK: #llvm.di_compile_unit<{{.*}}>
   mlirAttributeDump(compile_unit);

mlir/test/Target/LLVMIR/Import/debug-info.ll

@@ -197,7 +197,7 @@ define void @composite_type() !dbg !3 {
 ; // -----
 
 ; CHECK-DAG: #[[FILE:.+]] = #llvm.di_file<"debug-info.ll" in "/">
-; CHECK-DAG: #[[CU:.+]] = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #[[FILE]], isOptimized = false, emissionKind = None>
+; CHECK-DAG: #[[CU:.+]] = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #[[FILE]], isOptimized = false, emissionKind = None, nameTableKind = None>
 ; Verify an empty subroutine types list is supported.
 ; CHECK-DAG: #[[SP_TYPE:.+]] = #llvm.di_subroutine_type<callingConvention = DW_CC_normal>
 ; CHECK-DAG: #[[SP:.+]] = #llvm.di_subprogram<id = distinct[{{.*}}]<>, compileUnit = #[[CU]], scope = #[[FILE]], name = "subprogram", linkageName = "subprogram", file = #[[FILE]], line = 42, scopeLine = 42, subprogramFlags = Definition, type = #[[SP_TYPE]]>
@@ -209,7 +209,7 @@ define void @subprogram() !dbg !3 {
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!0}
 !0 = !{i32 2, !"Debug Info Version", i32 3}
-!1 = distinct !DICompileUnit(language: DW_LANG_C, file: !2)
+!1 = distinct !DICompileUnit(language: DW_LANG_C, file: !2, nameTableKind: None)
 !2 = !DIFile(filename: "debug-info.ll", directory: "/")
 !3 = distinct !DISubprogram(name: "subprogram", linkageName: "subprogram", scope: !2, file: !2, line: 42, scopeLine: 42, spFlags: DISPFlagDefinition, unit: !1, type: !4)
 !4 = !DISubroutineType(cc: DW_CC_normal, types: !5)

mlir/test/Target/LLVMIR/llvmir-debug.mlir

@@ -37,7 +37,8 @@ llvm.func @func_no_debug() {
 >
 #cu = #llvm.di_compile_unit<
   id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #file,
-  producer = "MLIR", isOptimized = true, emissionKind = Full
+  producer = "MLIR", isOptimized = true, emissionKind = Full,
+  nameTableKind = None
 >
 #composite = #llvm.di_composite_type<
   tag = DW_TAG_structure_type, name = "composite", file = #file,
@@ -127,7 +128,7 @@ llvm.func @empty_types() {
   llvm.return
 } loc(fused<#sp1>["foo.mlir":2:1])
 
-// CHECK: ![[CU_LOC:.*]] = distinct !DICompileUnit(language: DW_LANG_C, file: ![[CU_FILE_LOC:.*]], producer: "MLIR", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
+// CHECK: ![[CU_LOC:.*]] = distinct !DICompileUnit(language: DW_LANG_C, file: ![[CU_FILE_LOC:.*]], producer: "MLIR", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, nameTableKind: None)
 // CHECK: ![[CU_FILE_LOC]] = !DIFile(filename: "foo.mlir", directory: "/test/")
 
 // CHECK: ![[FUNC_LOC]] = distinct !DISubprogram(name: "func_with_debug", linkageName: "func_with_debug", scope: ![[NESTED_NAMESPACE:.*]], file: ![[CU_FILE_LOC]], line: 3, type: ![[FUNC_TYPE:.*]], scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: ![[CU_LOC]])