[llvm] aa3e78a - Reapply "[DebugInfo] Correctly track SDNode dependencies for list debug values"
Stephen Tozer via llvm-commits
llvm-commits at lists.llvm.org
Mon Apr 12 04:52:36 PDT 2021
Author: Stephen Tozer
Date: 2021-04-12T12:51:29+01:00
New Revision: aa3e78a59fdf3b211be72f1b3221af831665e67d
URL: https://github.com/llvm/llvm-project/commit/aa3e78a59fdf3b211be72f1b3221af831665e67d
DIFF: https://github.com/llvm/llvm-project/commit/aa3e78a59fdf3b211be72f1b3221af831665e67d.diff
LOG: Reapply "[DebugInfo] Correctly track SDNode dependencies for list debug values"
Fixed memory leak error by using BumpAllocator for SDDbgValue arrays.
This reverts commit 1b589172bd19b83e8137185ed11f50bba06e8766.
Added:
llvm/test/CodeGen/X86/dbg-list-dependencies.ll
Modified:
llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
Removed:
################################################################################
diff --git a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
index dd92aca3b710c..8788dff6263d9 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
@@ -131,14 +131,17 @@ class SDDbgOperand {
/// We do not use SDValue here to avoid including its header.
class SDDbgValue {
public:
- // FIXME: These SmallVector sizes were chosen without any kind of performance
- // testing.
- using LocOpVector = SmallVector<SDDbgOperand, 2>;
- using SDNodeVector = SmallVector<SDNode *, 2>;
private:
- LocOpVector LocationOps;
- SDNodeVector SDNodes;
+ // SDDbgValues are allocated by a BumpPtrAllocator, which means the destructor
+ // may not be called; therefore all member arrays must also be allocated by
+ // that BumpPtrAllocator, to ensure that they are correctly freed.
+ size_t NumLocationOps;
+ SDDbgOperand *LocationOps;
+ // SDNode dependencies will be calculated as SDNodes that appear in
+ // LocationOps plus these AdditionalDependencies.
+ size_t NumAdditionalDependencies;
+ SDNode **AdditionalDependencies;
DIVariable *Var;
DIExpression *Expr;
DebugLoc DL;
@@ -149,30 +152,58 @@ class SDDbgValue {
bool Emitted = false;
public:
- SDDbgValue(DIVariable *Var, DIExpression *Expr, ArrayRef<SDDbgOperand> L,
- ArrayRef<SDNode *> Dependencies, bool IsIndirect, DebugLoc DL,
- unsigned O, bool IsVariadic)
- : LocationOps(L.begin(), L.end()),
- SDNodes(Dependencies.begin(), Dependencies.end()), Var(Var), Expr(Expr),
- DL(DL), Order(O), IsIndirect(IsIndirect), IsVariadic(IsVariadic) {
+ SDDbgValue(BumpPtrAllocator &Alloc, DIVariable *Var, DIExpression *Expr,
+ ArrayRef<SDDbgOperand> L, ArrayRef<SDNode *> Dependencies,
+ bool IsIndirect, DebugLoc DL, unsigned O, bool IsVariadic)
+ : NumLocationOps(L.size()),
+ LocationOps(Alloc.Allocate<SDDbgOperand>(L.size())),
+ NumAdditionalDependencies(Dependencies.size()),
+ AdditionalDependencies(Alloc.Allocate<SDNode *>(Dependencies.size())),
+ Var(Var), Expr(Expr), DL(DL), Order(O), IsIndirect(IsIndirect),
+ IsVariadic(IsVariadic) {
assert(IsVariadic || L.size() == 1);
assert(!(IsVariadic && IsIndirect));
+ std::copy(L.begin(), L.end(), LocationOps);
+ std::copy(Dependencies.begin(), Dependencies.end(), AdditionalDependencies);
}
+ // We allocate arrays with the BumpPtrAllocator and never free or copy them,
+ // for LocationOps and AdditionalDependencies, as we never expect to copy or
+ // destroy an SDDbgValue. If we ever start copying or destroying instances, we
+ // should manage the allocated memory appropriately.
+ SDDbgValue(const SDDbgValue &Other) = delete;
+ SDDbgValue &operator=(const SDDbgValue &Other) = delete;
+ ~SDDbgValue() = delete;
+
/// Returns the DIVariable pointer for the variable.
DIVariable *getVariable() const { return Var; }
/// Returns the DIExpression pointer for the expression.
DIExpression *getExpression() const { return Expr; }
- ArrayRef<SDDbgOperand> getLocationOps() const { return LocationOps; }
+ ArrayRef<SDDbgOperand> getLocationOps() const {
+ return ArrayRef<SDDbgOperand>(LocationOps, NumLocationOps);
+ }
- LocOpVector copyLocationOps() const { return LocationOps; }
+ SmallVector<SDDbgOperand> copyLocationOps() const {
+ return SmallVector<SDDbgOperand>(LocationOps, LocationOps + NumLocationOps);
+ }
// Returns the SDNodes which this SDDbgValue depends on.
- ArrayRef<SDNode *> getSDNodes() const { return SDNodes; }
+ SmallVector<SDNode *> getSDNodes() const {
+ SmallVector<SDNode *> Dependencies;
+ for (SDDbgOperand DbgOp : getLocationOps())
+ if (DbgOp.getKind() == SDDbgOperand::SDNODE)
+ Dependencies.push_back(DbgOp.getSDNode());
+ for (SDNode *Node : getAdditionalDependencies())
+ Dependencies.push_back(Node);
+ return Dependencies;
+ }
- SDNodeVector copySDNodes() const { return SDNodes; }
+ ArrayRef<SDNode *> getAdditionalDependencies() const {
+ return ArrayRef<SDNode *>(AdditionalDependencies,
+ NumAdditionalDependencies);
+ }
/// Returns whether this is an indirect value.
bool isIndirect() const { return IsIndirect; }
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 89371aa5cab9e..a7989ab734016 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -8583,7 +8583,8 @@ SDDbgValue *SelectionDAG::getDbgValue(DIVariable *Var, DIExpression *Expr,
assert(cast<DILocalVariable>(Var)->isValidLocationForIntrinsic(DL) &&
"Expected inlined-at fields to agree");
return new (DbgInfo->getAlloc())
- SDDbgValue(Var, Expr, SDDbgOperand::fromNode(N, R), N, IsIndirect, DL, O,
+ SDDbgValue(DbgInfo->getAlloc(), Var, Expr, SDDbgOperand::fromNode(N, R),
+ {}, IsIndirect, DL, O,
/*IsVariadic=*/false);
}
@@ -8594,9 +8595,10 @@ SDDbgValue *SelectionDAG::getConstantDbgValue(DIVariable *Var,
const DebugLoc &DL, unsigned O) {
assert(cast<DILocalVariable>(Var)->isValidLocationForIntrinsic(DL) &&
"Expected inlined-at fields to agree");
- return new (DbgInfo->getAlloc()) SDDbgValue(
- Var, Expr, SDDbgOperand::fromConst(C), {}, /*IsIndirect=*/false, DL, O,
- /*IsVariadic=*/false);
+ return new (DbgInfo->getAlloc())
+ SDDbgValue(DbgInfo->getAlloc(), Var, Expr, SDDbgOperand::fromConst(C), {},
+ /*IsIndirect=*/false, DL, O,
+ /*IsVariadic=*/false);
}
/// FrameIndex
@@ -8620,8 +8622,8 @@ SDDbgValue *SelectionDAG::getFrameIndexDbgValue(DIVariable *Var,
assert(cast<DILocalVariable>(Var)->isValidLocationForIntrinsic(DL) &&
"Expected inlined-at fields to agree");
return new (DbgInfo->getAlloc())
- SDDbgValue(Var, Expr, SDDbgOperand::fromFrameIdx(FI), Dependencies,
- IsIndirect, DL, O,
+ SDDbgValue(DbgInfo->getAlloc(), Var, Expr, SDDbgOperand::fromFrameIdx(FI),
+ Dependencies, IsIndirect, DL, O,
/*IsVariadic=*/false);
}
@@ -8632,7 +8634,8 @@ SDDbgValue *SelectionDAG::getVRegDbgValue(DIVariable *Var, DIExpression *Expr,
assert(cast<DILocalVariable>(Var)->isValidLocationForIntrinsic(DL) &&
"Expected inlined-at fields to agree");
return new (DbgInfo->getAlloc())
- SDDbgValue(Var, Expr, SDDbgOperand::fromVReg(VReg), {}, IsIndirect, DL, O,
+ SDDbgValue(DbgInfo->getAlloc(), Var, Expr, SDDbgOperand::fromVReg(VReg),
+ {}, IsIndirect, DL, O,
/*IsVariadic=*/false);
}
@@ -8644,7 +8647,8 @@ SDDbgValue *SelectionDAG::getDbgValueList(DIVariable *Var, DIExpression *Expr,
assert(cast<DILocalVariable>(Var)->isValidLocationForIntrinsic(DL) &&
"Expected inlined-at fields to agree");
return new (DbgInfo->getAlloc())
- SDDbgValue(Var, Expr, Locs, Dependencies, IsIndirect, DL, O, IsVariadic);
+ SDDbgValue(DbgInfo->getAlloc(), Var, Expr, Locs, Dependencies, IsIndirect,
+ DL, O, IsVariadic);
}
void SelectionDAG::transferDbgValues(SDValue From, SDValue To,
@@ -8707,12 +8711,10 @@ void SelectionDAG::transferDbgValues(SDValue From, SDValue To,
Expr = *Fragment;
}
- auto NewDependencies = Dbg->copySDNodes();
- std::replace(NewDependencies.begin(), NewDependencies.end(), FromNode,
- ToNode);
+ auto AdditionalDependencies = Dbg->getAdditionalDependencies();
// Clone the SDDbgValue and move it to To.
SDDbgValue *Clone = getDbgValueList(
- Var, Expr, NewLocOps, NewDependencies, Dbg->isIndirect(),
+ Var, Expr, NewLocOps, AdditionalDependencies, Dbg->isIndirect(),
Dbg->getDebugLoc(), std::max(ToNode->getIROrder(), Dbg->getOrder()),
Dbg->isVariadic());
ClonedDVs.push_back(Clone);
@@ -8772,11 +8774,9 @@ void SelectionDAG::salvageDebugInfo(SDNode &N) {
(void)Changed;
assert(Changed && "Salvage target doesn't use N");
- auto NewDependencies = DV->copySDNodes();
- std::replace(NewDependencies.begin(), NewDependencies.end(), &N,
- N0.getNode());
+ auto AdditionalDependencies = DV->getAdditionalDependencies();
SDDbgValue *Clone = getDbgValueList(DV->getVariable(), DIExpr,
- NewLocOps, NewDependencies,
+ NewLocOps, AdditionalDependencies,
DV->isIndirect(), DV->getDebugLoc(),
DV->getOrder(), DV->isVariadic());
ClonedDVs.push_back(Clone);
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index a9de6031a3b68..9e14e85bcefb1 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1302,8 +1302,8 @@ bool SelectionDAGBuilder::handleDebugValue(ArrayRef<const Value *> Values,
bool IsVariadic) {
if (Values.empty())
return true;
- SDDbgValue::LocOpVector LocationOps;
- SDDbgValue::SDNodeVector Dependencies;
+ SmallVector<SDDbgOperand> LocationOps;
+ SmallVector<SDNode *> Dependencies;
for (const Value *V : Values) {
// Constant value.
if (isa<ConstantInt>(V) || isa<ConstantFP>(V) || isa<UndefValue>(V) ||
@@ -1331,7 +1331,6 @@ bool SelectionDAGBuilder::handleDebugValue(ArrayRef<const Value *> Values,
// Only emit func arg dbg value for non-variadic dbg.values for now.
if (!IsVariadic && EmitFuncArgumentDbgValue(V, Var, Expr, dl, false, N))
return true;
- Dependencies.push_back(N.getNode());
if (auto *FISDN = dyn_cast<FrameIndexSDNode>(N.getNode())) {
// Construct a FrameIndexDbgValue for FrameIndexSDNodes so we can
// describe stack slot locations.
@@ -1343,6 +1342,7 @@ bool SelectionDAGBuilder::handleDebugValue(ArrayRef<const Value *> Values,
// dbg.value(i32* %px, !"int x", !DIExpression(DW_OP_deref))
//
// Both describe the direct values of their associated variables.
+ Dependencies.push_back(N.getNode());
LocationOps.emplace_back(SDDbgOperand::fromFrameIdx(FISDN->getIndex()));
continue;
}
diff --git a/llvm/test/CodeGen/X86/dbg-list-dependencies.ll b/llvm/test/CodeGen/X86/dbg-list-dependencies.ll
new file mode 100644
index 0000000000000..debf7579df80b
--- /dev/null
+++ b/llvm/test/CodeGen/X86/dbg-list-dependencies.ll
@@ -0,0 +1,187 @@
+; RUN: llc --stop-after=finalize-isel < %s
+
+; Tests that files with multiple SDNode dependencies are correctly handled by
+; SelectionDAG; dependencies that are incorrectly updated for an SDDbgValue
+; throughout SelectionDAG will result in errors.
+
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+%class.anon = type { i8 }
+%class.D = type { %class.f }
+%class.f = type { i32, i32 }
+%class.l = type { i8*, i64 }
+%class.d = type { i8 }
+
+ at q = internal global %class.anon zeroinitializer, align 1, !dbg !0
+
+define void @_Z1rv() local_unnamed_addr !dbg !30 {
+entry:
+ %t = alloca %class.D, align 4
+ %call = tail call { i8*, i64 } @"_ZN3$_05m_fn3Ev"(%class.anon* nonnull dereferenceable(1) @q), !dbg !60
+ %0 = extractvalue { i8*, i64 } %call, 0, !dbg !60
+ call void @llvm.dbg.value(metadata i8* %0, metadata !34, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !61
+ %1 = extractvalue { i8*, i64 } %call, 1, !dbg !60
+ call void @llvm.dbg.value(metadata i64 %1, metadata !34, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !61
+ %2 = bitcast %class.D* %t to i8*, !dbg !62
+ call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %2) #4, !dbg !62
+ call void @llvm.dbg.declare(metadata %class.D* %t, metadata !35, metadata !DIExpression()), !dbg !63
+ call void @llvm.dbg.value(metadata i8* %0, metadata !64, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !69
+ call void @llvm.dbg.value(metadata i64 %1, metadata !64, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !69
+ call void @llvm.dbg.value(metadata %class.D* %t, metadata !67, metadata !DIExpression()), !dbg !69
+ call void @llvm.dbg.value(metadata %class.l* undef, metadata !71, metadata !DIExpression()), !dbg !75
+ call void @llvm.dbg.value(metadata %class.D* %t, metadata !77, metadata !DIExpression()), !dbg !91
+ call void @llvm.dbg.value(metadata i8* %0, metadata !86, metadata !DIExpression()), !dbg !91
+ call void @llvm.dbg.value(metadata !DIArgList(i8* %0, i64 %1), metadata !87, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_constu, 1, DW_OP_mul, DW_OP_plus, DW_OP_stack_value)), !dbg !91
+ %3 = bitcast %class.D* %t to %class.d*, !dbg !93
+ call void @_ZN1dC2EPvl(%class.d* nonnull dereferenceable(1) %3, i8* nonnull %2, i64 8), !dbg !94
+ call void @llvm.dbg.value(metadata !DIArgList(i8* %0, i8* %0, i64 %1), metadata !88, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_constu, 1, DW_OP_mul, DW_OP_plus, DW_OP_LLVM_arg, 1, DW_OP_minus, DW_OP_stack_value)), !dbg !95
+ %tobool.not.i.i = icmp eq i64 %1, 0, !dbg !96
+ br i1 %tobool.not.i.i, label %_ZN1DILi8EEC2E1l.exit, label %if.then.i.i, !dbg !98
+
+if.then.i.i: ; preds = %entry
+ %add.ptr.i.i = getelementptr inbounds i8, i8* %0, i64 %1, !dbg !99
+ call void @llvm.dbg.value(metadata i8* %add.ptr.i.i, metadata !87, metadata !DIExpression()), !dbg !91
+ call void @llvm.dbg.value(metadata !DIArgList(i8* %add.ptr.i.i, i8* %0), metadata !88, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_minus, DW_OP_stack_value)), !dbg !95
+ call void @llvm.dbg.value(metadata %class.D* %t, metadata !77, metadata !DIExpression()), !dbg !91
+ %k.i.i = getelementptr inbounds %class.D, %class.D* %t, i64 0, i32 0, i32 1, !dbg !100
+ %4 = load i32, i32* %k.i.i, align 4, !dbg !100, !tbaa !101
+ call void @_Z1cIPKciEvT_S2_T0_(i8* %0, i8* nonnull %add.ptr.i.i, i32 %4), !dbg !106
+ br label %_ZN1DILi8EEC2E1l.exit, !dbg !106
+
+_ZN1DILi8EEC2E1l.exit: ; preds = %entry, %if.then.i.i
+ call void @llvm.lifetime.end.p0i8(i64 8, i8* nonnull %2) #4, !dbg !107
+ ret void, !dbg !107
+}
+
+declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
+
+declare void @llvm.dbg.declare(metadata, metadata, metadata)
+
+declare { i8*, i64 } @"_ZN3$_05m_fn3Ev"(%class.anon* nonnull dereferenceable(1)) local_unnamed_addr
+
+declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
+
+declare void @_ZN1dC2EPvl(%class.d* nonnull dereferenceable(1), i8*, i64) unnamed_addr
+
+declare !dbg !108 void @_Z1cIPKciEvT_S2_T0_(i8*, i8*, i32) local_unnamed_addr
+
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!26, !27, !28}
+!llvm.ident = !{!29}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "q", scope: !2, file: !3, line: 32, type: !6, isLocal: true, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
+!3 = !DIFile(filename: "dbg-list-dependencies.cpp", directory: "/")
+!4 = !{}
+!5 = !{!0}
+!6 = distinct !DICompositeType(tag: DW_TAG_class_type, file: !3, line: 29, size: 8, flags: DIFlagTypePassByValue, elements: !7)
+!7 = !{!8}
+!8 = !DISubprogram(name: "m_fn3", linkageName: "_ZN3$_05m_fn3Ev", scope: !6, file: !3, line: 31, type: !9, scopeLine: 31, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagOptimized)
+!9 = !DISubroutineType(types: !10)
+!10 = !{!11, !25}
+!11 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "l", file: !3, line: 17, size: 128, flags: DIFlagTypePassByValue, elements: !12, identifier: "_ZTS1l")
+!12 = !{!13, !16, !18, !24}
+!13 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !11, file: !3, line: 18, baseType: !14, size: 64)
+!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64)
+!15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
+!16 = !DIDerivedType(tag: DW_TAG_member, name: "n", scope: !11, file: !3, line: 19, baseType: !17, size: 64, offset: 64)
+!17 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
+!18 = !DISubprogram(name: "p", linkageName: "_ZN1l1pEv", scope: !11, file: !3, line: 22, type: !19, scopeLine: 22, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagOptimized)
+!19 = !DISubroutineType(types: !20)
+!20 = !{!21, !23}
+!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64)
+!22 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !15)
+!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!24 = !DISubprogram(name: "m_fn2", linkageName: "_ZN1l5m_fn2Ev", scope: !11, file: !3, line: 23, type: !19, scopeLine: 23, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagOptimized)
+!25 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!26 = !{i32 7, !"Dwarf Version", i32 4}
+!27 = !{i32 2, !"Debug Info Version", i32 3}
+!28 = !{i32 1, !"wchar_size", i32 4}
+!29 = !{!"clang version 13.0.0"}
+!30 = distinct !DISubprogram(name: "r", linkageName: "_Z1rv", scope: !3, file: !3, line: 33, type: !31, scopeLine: 33, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !33)
+!31 = !DISubroutineType(types: !32)
+!32 = !{null}
+!33 = !{!34, !35}
+!34 = !DILocalVariable(name: "s", scope: !30, file: !3, line: 34, type: !11)
+!35 = !DILocalVariable(name: "t", scope: !30, file: !3, line: 35, type: !36)
+!36 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "D<8>", file: !3, line: 25, size: 64, flags: DIFlagTypePassByValue | DIFlagNonTrivial, elements: !37, templateParams: !58, identifier: "_ZTS1DILi8EE")
+!37 = !{!38, !54}
+!38 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !36, baseType: !39, extraData: i32 0)
+!39 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "f<8>", file: !3, line: 6, size: 64, flags: DIFlagTypePassByValue | DIFlagNonTrivial, elements: !40, templateParams: !52, identifier: "_ZTS1fILi8EE")
+!40 = !{!41, !49, !51}
+!41 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !39, baseType: !42, extraData: i32 0)
+!42 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "d", file: !3, line: 2, size: 8, flags: DIFlagTypePassByValue | DIFlagNonTrivial, elements: !43, identifier: "_ZTS1d")
+!43 = !{!44}
+!44 = !DISubprogram(name: "d", scope: !42, file: !3, line: 4, type: !45, scopeLine: 4, flags: DIFlagProtected | DIFlagPrototyped, spFlags: DISPFlagOptimized)
+!45 = !DISubroutineType(types: !46)
+!46 = !{null, !47, !48, !17}
+!47 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !42, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!48 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
+!49 = !DIDerivedType(tag: DW_TAG_member, name: "g", scope: !39, file: !3, line: 7, baseType: !50, size: 32)
+!50 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!51 = !DIDerivedType(tag: DW_TAG_member, name: "k", scope: !39, file: !3, line: 15, baseType: !50, size: 32, offset: 32, flags: DIFlagPublic)
+!52 = !{!53}
+!53 = !DITemplateValueParameter(name: "e", type: !50, value: i32 8)
+!54 = !DISubprogram(name: "D", scope: !36, file: !3, line: 27, type: !55, scopeLine: 27, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagOptimized)
+!55 = !DISubroutineType(types: !56)
+!56 = !{null, !57, !11}
+!57 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !36, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!58 = !{!59}
+!59 = !DITemplateValueParameter(name: "o", type: !50, value: i32 8)
+!60 = !DILocation(line: 34, column: 9, scope: !30)
+!61 = !DILocation(line: 0, scope: !30)
+!62 = !DILocation(line: 35, column: 3, scope: !30)
+!63 = !DILocation(line: 35, column: 8, scope: !30)
+!64 = !DILocalVariable(name: "h", arg: 2, scope: !65, file: !3, line: 27, type: !11)
+!65 = distinct !DISubprogram(name: "D", linkageName: "_ZN1DILi8EEC2E1l", scope: !36, file: !3, line: 27, type: !55, scopeLine: 27, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, declaration: !54, retainedNodes: !66)
+!66 = !{!67, !64}
+!67 = !DILocalVariable(name: "this", arg: 1, scope: !65, type: !68, flags: DIFlagArtificial | DIFlagObjectPointer)
+!68 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !36, size: 64)
+!69 = !DILocation(line: 0, scope: !65, inlinedAt: !70)
+!70 = distinct !DILocation(line: 35, column: 8, scope: !30)
+!71 = !DILocalVariable(name: "this", arg: 1, scope: !72, type: !74, flags: DIFlagArtificial | DIFlagObjectPointer)
+!72 = distinct !DISubprogram(name: "m_fn2", linkageName: "_ZN1l5m_fn2Ev", scope: !11, file: !3, line: 23, type: !19, scopeLine: 23, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, declaration: !24, retainedNodes: !73)
+!73 = !{!71}
+!74 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
+!75 = !DILocation(line: 0, scope: !72, inlinedAt: !76)
+!76 = distinct !DILocation(line: 27, column: 26, scope: !65, inlinedAt: !70)
+!77 = !DILocalVariable(name: "this", arg: 1, scope: !78, type: !90, flags: DIFlagArtificial | DIFlagObjectPointer)
+!78 = distinct !DISubprogram(name: "f<const char *>", linkageName: "_ZN1fILi8EEC2IPKcEET_S4_", scope: !39, file: !3, line: 10, type: !79, scopeLine: 10, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, templateParams: !83, declaration: !82, retainedNodes: !85)
+!79 = !DISubroutineType(types: !80)
+!80 = !{null, !81, !21, !21}
+!81 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !39, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!82 = !DISubprogram(name: "f<const char *>", scope: !39, file: !3, line: 10, type: !79, scopeLine: 10, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagOptimized, templateParams: !83)
+!83 = !{!84}
+!84 = !DITemplateTypeParameter(name: "a", type: !21)
+!85 = !{!77, !86, !87, !88}
+!86 = !DILocalVariable(name: "h", arg: 2, scope: !78, file: !3, line: 10, type: !21)
+!87 = !DILocalVariable(name: "i", arg: 3, scope: !78, file: !3, line: 10, type: !21)
+!88 = !DILocalVariable(name: "j", scope: !89, file: !3, line: 11, type: !17)
+!89 = distinct !DILexicalBlock(scope: !78, file: !3, line: 10, column: 48)
+!90 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !39, size: 64)
+!91 = !DILocation(line: 0, scope: !78, inlinedAt: !92)
+!92 = distinct !DILocation(line: 27, column: 12, scope: !65, inlinedAt: !70)
+!93 = !DILocation(line: 10, column: 48, scope: !78, inlinedAt: !92)
+!94 = !DILocation(line: 10, column: 39, scope: !78, inlinedAt: !92)
+!95 = !DILocation(line: 0, scope: !89, inlinedAt: !92)
+!96 = !DILocation(line: 12, column: 9, scope: !97, inlinedAt: !92)
+!97 = distinct !DILexicalBlock(scope: !89, file: !3, line: 12, column: 9)
+!98 = !DILocation(line: 12, column: 9, scope: !89, inlinedAt: !92)
+!99 = !DILocation(line: 23, column: 34, scope: !72, inlinedAt: !76)
+!100 = !DILocation(line: 13, column: 15, scope: !97, inlinedAt: !92)
+!101 = !{!102, !103, i64 4}
+!102 = !{!"_ZTS1fILi8EE", !103, i64 0, !103, i64 4}
+!103 = !{!"int", !104, i64 0}
+!104 = !{!"omnipotent char", !105, i64 0}
+!105 = !{!"Simple C++ TBAA"}
+!106 = !DILocation(line: 13, column: 7, scope: !97, inlinedAt: !92)
+!107 = !DILocation(line: 36, column: 1, scope: !30)
+!108 = !DISubprogram(name: "c<const char *, int>", linkageName: "_Z1cIPKciEvT_S2_T0_", scope: !3, file: !3, line: 1, type: !109, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, templateParams: !111, retainedNodes: !4)
+!109 = !DISubroutineType(types: !110)
+!110 = !{null, !21, !21, !50}
+!111 = !{!84, !112}
+!112 = !DITemplateTypeParameter(name: "b", type: !50)
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