[flang-commits] [flang] [mlir] [mlir][debuginfo] Add support for subprogram annotations (PR #110946)
Walter Erquinigo via flang-commits
flang-commits at lists.llvm.org
Mon Oct 7 09:39:54 PDT 2024
https://github.com/walter-erquinigo updated https://github.com/llvm/llvm-project/pull/110946
>From 52369672cbeea8fbc31daaa90bad17884465ba9d Mon Sep 17 00:00:00 2001
From: walter erquinigo <walter at modular.com>
Date: Wed, 2 Oct 2024 22:32:09 -0400
Subject: [PATCH] [mlir][debuginfo] Add support for subroutine annotations
LLVM already supports `DW_TAG_LLVM_annotation` entries for subroutines, but this hasn't been surfaced to the LLVM dialect.
I'm doing the minimal amount of work to support string-based annotations, which is useful for attaching metadata to
functions, which is useful for debuggers to offer features beyond basic DWARF.
As LLVM already supports this, this patch is not controversial.
---
.../lib/Optimizer/Transforms/AddDebugInfo.cpp | 7 ++---
mlir/include/mlir-c/Dialect/LLVM.h | 7 ++++-
.../mlir/Dialect/LLVMIR/LLVMAttrDefs.td | 22 ++++++++++++---
mlir/lib/CAPI/Dialect/LLVM.cpp | 16 ++++++++++-
mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp | 17 ++++++------
.../Transforms/DIScopeForLLVMFuncOp.cpp | 2 +-
mlir/lib/Target/LLVMIR/DebugImporter.cpp | 14 +++++++++-
mlir/lib/Target/LLVMIR/DebugTranslation.cpp | 9 ++++++-
mlir/test/CAPI/llvm.c | 9 ++++++-
mlir/test/Dialect/LLVMIR/debuginfo.mlir | 5 ++--
mlir/test/Target/LLVMIR/Import/debug-info.ll | 27 +++++++++++++++++++
mlir/test/Target/LLVMIR/llvmir-debug.mlir | 8 ++++--
12 files changed, 119 insertions(+), 24 deletions(-)
diff --git a/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp b/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp
index a921d91d16fe48..30a14f4bfcbfae 100644
--- a/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp
+++ b/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp
@@ -330,7 +330,8 @@ void AddDebugInfoPass::handleFuncOp(mlir::func::FuncOp funcOp,
if (debugLevel == mlir::LLVM::DIEmissionKind::LineTablesOnly) {
auto spAttr = mlir::LLVM::DISubprogramAttr::get(
context, id, compilationUnit, Scope, funcName, fullName, funcFileAttr,
- line, line, subprogramFlags, subTypeAttr, /*retainedNodes=*/{});
+ line, line, subprogramFlags, subTypeAttr, /*retainedNodes=*/{},
+ /*annotations=*/{});
funcOp->setLoc(builder.getFusedLoc({l}, spAttr));
return;
}
@@ -354,7 +355,7 @@ void AddDebugInfoPass::handleFuncOp(mlir::func::FuncOp funcOp,
auto spAttr = mlir::LLVM::DISubprogramAttr::get(
context, recId, /*isRecSelf=*/true, id, compilationUnit, Scope, funcName,
fullName, funcFileAttr, line, line, subprogramFlags, subTypeAttr,
- /*retainedNodes=*/{});
+ /*retainedNodes=*/{}, /*annotations=*/{});
// There is no direct information in the IR for any 'use' statement in the
// function. We have to extract that information from the DeclareOp. We do
@@ -387,7 +388,7 @@ void AddDebugInfoPass::handleFuncOp(mlir::func::FuncOp funcOp,
spAttr = mlir::LLVM::DISubprogramAttr::get(
context, recId, /*isRecSelf=*/false, id2, compilationUnit, Scope,
funcName, fullName, funcFileAttr, line, line, subprogramFlags,
- subTypeAttr, entities);
+ subTypeAttr, entities, /*annotations=*/{});
funcOp->setLoc(builder.getFusedLoc({l}, spAttr));
funcOp.walk([&](fir::cg::XDeclareOp declOp) {
diff --git a/mlir/include/mlir-c/Dialect/LLVM.h b/mlir/include/mlir-c/Dialect/LLVM.h
index d6062bed5c0c0f..0e6434073437a5 100644
--- a/mlir/include/mlir-c/Dialect/LLVM.h
+++ b/mlir/include/mlir-c/Dialect/LLVM.h
@@ -325,7 +325,12 @@ MLIR_CAPI_EXPORTED MlirAttribute mlirLLVMDISubprogramAttrGet(
MlirAttribute compileUnit, MlirAttribute scope, MlirAttribute name,
MlirAttribute linkageName, MlirAttribute file, unsigned int line,
unsigned int scopeLine, uint64_t subprogramFlags, MlirAttribute type,
- intptr_t nRetainedNodes, MlirAttribute const *retainedNodes);
+ intptr_t nRetainedNodes, MlirAttribute const *retainedNodes,
+ intptr_t nAnnotations, MlirAttribute const *annotations);
+
+/// Creates a LLVM DIAnnotation attribute.
+MLIR_CAPI_EXPORTED MlirAttribute mlirLLVMDIAnnotationAttrGet(
+ MlirContext ctx, MlirAttribute name, MlirAttribute value);
/// Gets the scope from this DISubprogramAttr.
MLIR_CAPI_EXPORTED MlirAttribute
diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
index 2da45eba77655b..80c22a357287ba 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
@@ -586,7 +586,8 @@ def LLVM_DISubprogramAttr : LLVM_Attr<"DISubprogram", "di_subprogram",
OptionalParameter<"unsigned">:$scopeLine,
OptionalParameter<"DISubprogramFlags">:$subprogramFlags,
OptionalParameter<"DISubroutineTypeAttr">:$type,
- OptionalArrayRefParameter<"DINodeAttr">:$retainedNodes
+ OptionalArrayRefParameter<"DINodeAttr">:$retainedNodes,
+ OptionalArrayRefParameter<"DINodeAttr">:$annotations
);
let builders = [
AttrBuilder<(ins
@@ -594,11 +595,11 @@ def LLVM_DISubprogramAttr : LLVM_Attr<"DISubprogram", "di_subprogram",
"DIScopeAttr":$scope, "StringAttr":$name, "StringAttr":$linkageName,
"DIFileAttr":$file, "unsigned":$line, "unsigned":$scopeLine,
"DISubprogramFlags":$subprogramFlags, "DISubroutineTypeAttr":$type,
- "ArrayRef<DINodeAttr>":$retainedNodes
+ "ArrayRef<DINodeAttr>":$retainedNodes, "ArrayRef<DINodeAttr>":$annotations
), [{
return $_get($_ctxt, /*recId=*/nullptr, /*isRecSelf=*/false, id, compileUnit,
scope, name, linkageName, file, line, scopeLine,
- subprogramFlags, type, retainedNodes);
+ subprogramFlags, type, retainedNodes, annotations);
}]>
];
let assemblyFormat = "`<` struct(params) `>`";
@@ -670,6 +671,21 @@ def LLVM_DIImportedEntityAttr : LLVM_Attr<"DIImportedEntity", "di_imported_entit
let assemblyFormat = "`<` struct(params) `>`";
}
+//===----------------------------------------------------------------------===//
+// DIAnnotationAttr
+//===----------------------------------------------------------------------===//
+
+def LLVM_DIAnnotationAttr : LLVM_Attr<"DIAnnotation",
+ "di_annotation",
+ /*traits=*/[], "DINodeAttr"> {
+ let parameters = (ins
+ "StringAttr":$name,
+ "StringAttr":$value
+ );
+
+ let assemblyFormat = "`<` struct(params) `>`";
+}
+
//===----------------------------------------------------------------------===//
// DISubrangeAttr
//===----------------------------------------------------------------------===//
diff --git a/mlir/lib/CAPI/Dialect/LLVM.cpp b/mlir/lib/CAPI/Dialect/LLVM.cpp
index 03b536d7aad98f..c7082445dd9c27 100644
--- a/mlir/lib/CAPI/Dialect/LLVM.cpp
+++ b/mlir/lib/CAPI/Dialect/LLVM.cpp
@@ -303,9 +303,14 @@ MlirAttribute mlirLLVMDISubprogramAttrGet(
MlirAttribute compileUnit, MlirAttribute scope, MlirAttribute name,
MlirAttribute linkageName, MlirAttribute file, unsigned int line,
unsigned int scopeLine, uint64_t subprogramFlags, MlirAttribute type,
- intptr_t nRetainedNodes, MlirAttribute const *retainedNodes) {
+ intptr_t nRetainedNodes, MlirAttribute const *retainedNodes,
+ intptr_t nAnnotations, MlirAttribute const *annotations) {
SmallVector<Attribute> nodesStorage;
nodesStorage.reserve(nRetainedNodes);
+
+ SmallVector<Attribute> annotationsStorage;
+ annotationsStorage.reserve(nAnnotations);
+
return wrap(DISubprogramAttr::get(
unwrap(ctx), cast<DistinctAttr>(unwrap(recId)), isRecSelf,
cast<DistinctAttr>(unwrap(id)),
@@ -316,6 +321,9 @@ MlirAttribute mlirLLVMDISubprogramAttrGet(
cast<DISubroutineTypeAttr>(unwrap(type)),
llvm::map_to_vector(
unwrapList(nRetainedNodes, retainedNodes, nodesStorage),
+ [](Attribute a) { return cast<DINodeAttr>(a); }),
+ llvm::map_to_vector(
+ unwrapList(nAnnotations, annotations, annotationsStorage),
[](Attribute a) { return cast<DINodeAttr>(a); })));
}
@@ -375,3 +383,9 @@ MlirAttribute mlirLLVMDIImportedEntityAttrGet(
llvm::map_to_vector(unwrapList(nElements, elements, elementsStorage),
[](Attribute a) { return cast<DINodeAttr>(a); })));
}
+
+MlirAttribute mlirLLVMDIAnnotationAttrGet(MlirContext ctx, MlirAttribute name,
+ MlirAttribute value) {
+ return wrap(DIAnnotationAttr::get(unwrap(ctx), cast<StringAttr>(unwrap(name)),
+ cast<StringAttr>(unwrap(value))));
+}
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp
index bd2164e640e7b8..99871dac81d326 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp
@@ -60,9 +60,9 @@ bool DINodeAttr::classof(Attribute attr) {
DIDerivedTypeAttr, DIFileAttr, DIGlobalVariableAttr,
DIImportedEntityAttr, DILabelAttr, DILexicalBlockAttr,
DILexicalBlockFileAttr, DILocalVariableAttr, DIModuleAttr,
- DINamespaceAttr, DINullTypeAttr, DIStringTypeAttr,
- DISubprogramAttr, DISubrangeAttr, DISubroutineTypeAttr>(
- attr);
+ DINamespaceAttr, DINullTypeAttr, DIAnnotationAttr,
+ DIStringTypeAttr, DISubprogramAttr, DISubrangeAttr,
+ DISubroutineTypeAttr>(attr);
}
//===----------------------------------------------------------------------===//
@@ -221,15 +221,16 @@ DICompositeTypeAttr::getRecSelf(DistinctAttr recId) {
//===----------------------------------------------------------------------===//
DIRecursiveTypeAttrInterface DISubprogramAttr::withRecId(DistinctAttr recId) {
- return DISubprogramAttr::get(
- getContext(), recId, getIsRecSelf(), getId(), getCompileUnit(),
- getScope(), getName(), getLinkageName(), getFile(), getLine(),
- getScopeLine(), getSubprogramFlags(), getType(), getRetainedNodes());
+ return DISubprogramAttr::get(getContext(), recId, getIsRecSelf(), getId(),
+ getCompileUnit(), getScope(), getName(),
+ getLinkageName(), getFile(), getLine(),
+ getScopeLine(), getSubprogramFlags(), getType(),
+ getRetainedNodes(), getAnnotations());
}
DIRecursiveTypeAttrInterface DISubprogramAttr::getRecSelf(DistinctAttr recId) {
return DISubprogramAttr::get(recId.getContext(), recId, /*isRecSelf=*/true,
- {}, {}, {}, {}, {}, 0, 0, {}, {}, {}, {});
+ {}, {}, {}, {}, {}, 0, 0, {}, {}, {}, {}, {});
}
//===----------------------------------------------------------------------===//
diff --git a/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp b/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp
index 2cfaffa7c8efce..59a4f8e9023582 100644
--- a/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp
+++ b/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp
@@ -78,7 +78,7 @@ static void addScopeToFunction(LLVM::LLVMFuncOp llvmFunc,
auto subprogramAttr = LLVM::DISubprogramAttr::get(
context, id, compileUnitAttr, fileAttr, funcName, funcName, fileAttr,
/*line=*/line, /*scopeline=*/col, subprogramFlags, subroutineTypeAttr,
- /*retainedNodes=*/{});
+ /*retainedNodes=*/{}, /*annotations=*/{});
llvmFunc->setLoc(FusedLoc::get(context, {loc}, subprogramAttr));
}
diff --git a/mlir/lib/Target/LLVMIR/DebugImporter.cpp b/mlir/lib/Target/LLVMIR/DebugImporter.cpp
index 8c6f32f6bb0cd0..0954568552badc 100644
--- a/mlir/lib/Target/LLVMIR/DebugImporter.cpp
+++ b/mlir/lib/Target/LLVMIR/DebugImporter.cpp
@@ -245,12 +245,24 @@ DISubprogramAttr DebugImporter::translateImpl(llvm::DISubprogram *node) {
if (llvm::is_contained(retainedNodes, nullptr))
retainedNodes.clear();
+ SmallVector<DINodeAttr> annotations;
+ if (llvm::DINodeArray rawAnns = node->getAnnotations(); rawAnns) {
+ for (size_t i = 0, e = rawAnns->getNumOperands(); i < e; ++i) {
+ const llvm::MDTuple *tuple = cast<llvm::MDTuple>(rawAnns->getOperand(i));
+ const auto name = StringAttr::get(
+ context, cast<llvm::MDString>(tuple->getOperand(0))->getString());
+ const auto value = StringAttr::get(
+ context, cast<llvm::MDString>(tuple->getOperand(1))->getString());
+ annotations.push_back(DIAnnotationAttr::get(context, name, value));
+ }
+ }
+
return DISubprogramAttr::get(context, id, translate(node->getUnit()), scope,
getStringAttrOrNull(node->getRawName()),
getStringAttrOrNull(node->getRawLinkageName()),
translate(node->getFile()), node->getLine(),
node->getScopeLine(), *subprogramFlags, type,
- retainedNodes);
+ retainedNodes, annotations);
}
DISubrangeAttr DebugImporter::translateImpl(llvm::DISubrange *node) {
diff --git a/mlir/lib/Target/LLVMIR/DebugTranslation.cpp b/mlir/lib/Target/LLVMIR/DebugTranslation.cpp
index 8ca3beca6b66f7..92ff079a10c8aa 100644
--- a/mlir/lib/Target/LLVMIR/DebugTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/DebugTranslation.cpp
@@ -102,6 +102,12 @@ DebugTranslation::getMDTupleOrNull(ArrayRef<DINodeAttr> elements) {
return nullptr;
SmallVector<llvm::Metadata *> llvmElements = llvm::to_vector(
llvm::map_range(elements, [&](DINodeAttr attr) -> llvm::Metadata * {
+ if (DIAnnotationAttr annAttr = dyn_cast<DIAnnotationAttr>(attr)) {
+ llvm::Metadata *ops[2] = {
+ llvm::MDString::get(llvmCtx, annAttr.getName()),
+ llvm::MDString::get(llvmCtx, annAttr.getValue())};
+ return llvm::MDNode::get(llvmCtx, ops);
+ }
return translate(attr);
}));
return llvm::MDNode::get(llvmCtx, llvmElements);
@@ -332,7 +338,8 @@ llvm::DISubprogram *DebugTranslation::translateImpl(DISubprogramAttr attr) {
/*ThisAdjustment=*/0, llvm::DINode::FlagZero,
static_cast<llvm::DISubprogram::DISPFlags>(attr.getSubprogramFlags()),
compileUnit, /*TemplateParams=*/nullptr, /*Declaration=*/nullptr,
- getMDTupleOrNull(attr.getRetainedNodes()));
+ getMDTupleOrNull(attr.getRetainedNodes()), nullptr,
+ getMDTupleOrNull(attr.getAnnotations()));
if (attr.getId())
distinctAttrToNode.try_emplace(attr.getId(), node);
return node;
diff --git a/mlir/test/CAPI/llvm.c b/mlir/test/CAPI/llvm.c
index 36277122801de4..12a436ad12fc4c 100644
--- a/mlir/test/CAPI/llvm.c
+++ b/mlir/test/CAPI/llvm.c
@@ -324,9 +324,16 @@ static void testDebugInfoAttributes(MlirContext ctx) {
mlirAttributeDump(di_imported_entity);
// CHECK: #llvm.di_imported_entity<{{.*}}>
+ MlirAttribute di_annotation = mlirLLVMDIAnnotationAttrGet(
+ ctx, mlirStringAttrGet(ctx, mlirStringRefCreateFromCString("foo")),
+ mlirStringAttrGet(ctx, mlirStringRefCreateFromCString("bar")));
+
+ mlirAttributeDump(di_annotation);
+ // CHECK: #llvm.di_annotation<{{.*}}>
+
MlirAttribute di_subprogram = mlirLLVMDISubprogramAttrGet(
ctx, recId0, false, id, compile_unit, compile_unit, foo, bar, file, 1, 2,
- 0, subroutine_type, 1, &di_imported_entity);
+ 0, subroutine_type, 1, &di_imported_entity, 1, &di_annotation);
// CHECK: #llvm.di_subprogram<{{.*}}>
mlirAttributeDump(di_subprogram);
diff --git a/mlir/test/Dialect/LLVMIR/debuginfo.mlir b/mlir/test/Dialect/LLVMIR/debuginfo.mlir
index 6d9b7799c3917f..af95ec97833a13 100644
--- a/mlir/test/Dialect/LLVMIR/debuginfo.mlir
+++ b/mlir/test/Dialect/LLVMIR/debuginfo.mlir
@@ -116,10 +116,11 @@
apinotes = "/", line = 42, isDecl = true
>
-// CHECK-DAG: #[[SP2:.*]] = #llvm.di_subprogram<compileUnit = #[[CU]], scope = #[[MODULE]], name = "value", file = #[[FILE]], subprogramFlags = Definition, type = #[[SPTYPE2]]>
+// CHECK-DAG: #[[SP2:.*]] = #llvm.di_subprogram<compileUnit = #[[CU]], scope = #[[MODULE]], name = "value", file = #[[FILE]], subprogramFlags = Definition, type = #[[SPTYPE2]], annotations = #llvm.di_annotation<name = "foo", value = "bar">
#sp2 = #llvm.di_subprogram<
compileUnit = #cu, scope = #module, name = "value",
- file = #file, subprogramFlags = "Definition", type = #spType2
+ file = #file, subprogramFlags = "Definition", type = #spType2,
+ annotations = #llvm.di_annotation<name = "foo", value = "bar">
>
// CHECK-DAG: #[[BLOCK0:.*]] = #llvm.di_lexical_block<scope = #[[SP0]], line = 1, column = 2>
diff --git a/mlir/test/Target/LLVMIR/Import/debug-info.ll b/mlir/test/Target/LLVMIR/Import/debug-info.ll
index 02e35ae7f0ee9d..6267990b0bf803 100644
--- a/mlir/test/Target/LLVMIR/Import/debug-info.ll
+++ b/mlir/test/Target/LLVMIR/Import/debug-info.ll
@@ -816,3 +816,30 @@ define void @imp_fn() !dbg !12 {
; CHECK-DAG: #[[SP_REC:.+]] = #llvm.di_subprogram<recId = distinct{{.*}}<>, isRecSelf = true>
; CHECK-DAG: #[[IE:.+]] = #llvm.di_imported_entity<tag = DW_TAG_imported_module, scope = #[[SP_REC]], entity = #[[M]]{{.*}}>
; CHECK-DAG: #[[SP:.+]] = #llvm.di_subprogram<{{.*}}name = "imp_fn"{{.*}}retainedNodes = #[[IE]]>
+
+; // -----
+
+; Test that annotations are handled correctly
+
+; CHECK-LABEL: @fn_with_annotations
+
+define void @fn_with_annotations() !dbg !12 {
+ ret void
+}
+
+!llvm.module.flags = !{!10}
+!llvm.dbg.cu = !{!4}
+
+!2 = !DIModule(scope: !4, name: "mod1", file: !3, line: 1)
+!3 = !DIFile(filename: "test.f90", directory: "")
+!4 = distinct !DICompileUnit(language: DW_LANG_Fortran95, file: !3)
+!8 = !DIModule(scope: !4, name: "mod1", file: !3, line: 5)
+!10 = !{i32 2, !"Debug Info Version", i32 3}
+!12 = distinct !DISubprogram(name: "fn_with_annotations", linkageName: "fn_with_annotations", scope: !3, file: !3, line: 10, type: !14, scopeLine: 10, spFlags: DISPFlagDefinition, unit: !4, annotations: !16)
+!14 = !DISubroutineType(cc: DW_CC_program, types: !15)
+!15 = !{}
+!16 = !{!17}
+!17 = !{!"foo", !"bar"}
+
+
+; CHECK-DAG: #llvm.di_subprogram<{{.*}}name = "fn_with_annotations"{{.*}}annotations = #llvm.di_annotation<name = "foo", value = "bar">>
diff --git a/mlir/test/Target/LLVMIR/llvmir-debug.mlir b/mlir/test/Target/LLVMIR/llvmir-debug.mlir
index 01194df5047742..b09a60b8dcac90 100644
--- a/mlir/test/Target/LLVMIR/llvmir-debug.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir-debug.mlir
@@ -89,7 +89,8 @@ llvm.func @func_no_debug() {
#spType1 = #llvm.di_subroutine_type<callingConvention = DW_CC_normal>
#sp1 = #llvm.di_subprogram<
compileUnit = #cu, scope = #module, name = "empty_types",
- file = #file, subprogramFlags = "Definition", type = #spType1
+ file = #file, subprogramFlags = "Definition", type = #spType1,
+ annotations = #llvm.di_annotation<name = "foo", value = "bar">
>
// CHECK-LABEL: define void @func_with_debug(
@@ -177,11 +178,14 @@ llvm.func @empty_types() {
// CHECK: ![[CALLEE_ARGS]] = !{![[ARG_TYPE:.*]], ![[ARG_TYPE:.*]]}
// CHECK: ![[INLINE_LOC]] = !DILocation(line: 28, column: 5,
-// CHECK: ![[EMPTY_TYPES_LOC]] = distinct !DISubprogram(name: "empty_types", scope: ![[MODULE:.*]], file: ![[CU_FILE_LOC]], type: ![[EMPTY_TYPES_TYPE:.*]], spFlags: DISPFlagDefinition
+// CHECK: ![[EMPTY_TYPES_LOC]] = distinct !DISubprogram(name: "empty_types", scope: ![[MODULE:.*]], file: ![[CU_FILE_LOC]], type: ![[EMPTY_TYPES_TYPE:.*]], spFlags: DISPFlagDefinition, unit: ![[CU_LOC]], annotations: ![[ANNOTATIONS:.*]])
// CHECK: ![[MODULE]] = !DIModule(scope: ![[CU_FILE_LOC]], name: "module", configMacros: "bar", includePath: "/", apinotes: "/", file: ![[CU_FILE_LOC]], line: 42, isDecl: true)
// CHECK: ![[EMPTY_TYPES_TYPE]] = !DISubroutineType(cc: DW_CC_normal, types: ![[EMPTY_TYPES_ARGS:.*]])
// CHECK: ![[EMPTY_TYPES_ARGS]] = !{}
+// CHECK: ![[ANNOTATIONS]] = !{![[ANNOTATION:.*]]}
+// CHECK: ![[ANNOTATION]] = !{!"foo", !"bar"}
+
// -----
#di_file = #llvm.di_file<"foo.mlir" in "/test/">
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