TheCPU =
mapArchToCVCPUType(Triple(MMI->getModule()->getTargetTriple()).getArch());
+ collectGlobalVariableInfo();
+
// Check if we should emit type record hashes.
ConstantInt *GH = mdconst::extract_or_null<ConstantInt>(
MMI->getModule()->getModuleFlag("CodeViewGHash"));
endSymbolRecord(FrameProcEnd);
emitLocalVariableList(FI, FI.Locals);
+ emitGlobalVariableList(FI.Globals);
emitLexicalBlockList(FI.ChildBlocks, FI);
// Emit inlined call site information. Only emit functions inlined directly
GlobalUDTs.clear();
TypeIndices.clear();
CompleteTypeIndices.clear();
+ ScopeGlobals.clear();
}
void CodeViewDebug::collectMemberInfo(ClassInfo &Info,
// Emit variables local to this lexical block.
emitLocalVariableList(FI, Block.Locals);
+ emitGlobalVariableList(Block.Globals);
// Emit lexical blocks contained within this block.
emitLexicalBlockList(Block.Children, FI);
void CodeViewDebug::collectLexicalBlockInfo(
SmallVectorImpl<LexicalScope *> &Scopes,
SmallVectorImpl<LexicalBlock *> &Blocks,
- SmallVectorImpl<LocalVariable> &Locals) {
+ SmallVectorImpl<LocalVariable> &Locals,
+ SmallVectorImpl<CVGlobalVariable> &Globals) {
for (LexicalScope *Scope : Scopes)
- collectLexicalBlockInfo(*Scope, Blocks, Locals);
+ collectLexicalBlockInfo(*Scope, Blocks, Locals, Globals);
}
/// Populate the lexical blocks and local variable lists of the parent with
void CodeViewDebug::collectLexicalBlockInfo(
LexicalScope &Scope,
SmallVectorImpl<LexicalBlock *> &ParentBlocks,
- SmallVectorImpl<LocalVariable> &ParentLocals) {
+ SmallVectorImpl<LocalVariable> &ParentLocals,
+ SmallVectorImpl<CVGlobalVariable> &ParentGlobals) {
if (Scope.isAbstractScope())
return;
- auto LocalsIter = ScopeVariables.find(&Scope);
- if (LocalsIter == ScopeVariables.end()) {
- // This scope does not contain variables and can be eliminated.
- collectLexicalBlockInfo(Scope.getChildren(), ParentBlocks, ParentLocals);
- return;
- }
- SmallVectorImpl<LocalVariable> &Locals = LocalsIter->second;
-
+ // Gather information about the lexical scope including local variables,
+ // global variables, and address ranges.
+ bool IgnoreScope = false;
+ auto LI = ScopeVariables.find(&Scope);
+ SmallVectorImpl<LocalVariable> *Locals =
+ LI != ScopeVariables.end() ? &LI->second : nullptr;
+ auto GI = ScopeGlobals.find(Scope.getScopeNode());
+ SmallVectorImpl<CVGlobalVariable> *Globals =
+ GI != ScopeGlobals.end() ? GI->second.get() : nullptr;
const DILexicalBlock *DILB = dyn_cast<DILexicalBlock>(Scope.getScopeNode());
- if (!DILB) {
- // This scope is not a lexical block and can be eliminated, but keep any
- // local variables it contains.
- ParentLocals.append(Locals.begin(), Locals.end());
- collectLexicalBlockInfo(Scope.getChildren(), ParentBlocks, ParentLocals);
- return;
- }
-
const SmallVectorImpl<InsnRange> &Ranges = Scope.getRanges();
- if (Ranges.size() != 1 || !getLabelAfterInsn(Ranges.front().second)) {
- // This lexical block scope has too many address ranges to represent in the
- // current CodeView format or does not have a valid address range.
- // Eliminate this lexical scope and promote any locals it contains to the
- // parent scope.
- //
- // For lexical scopes with multiple address ranges you may be tempted to
- // construct a single range covering every instruction where the block is
- // live and everything in between. Unfortunately, Visual Studio only
- // displays variables from the first matching lexical block scope. If the
- // first lexical block contains exception handling code or cold code which
- // is moved to the bottom of the routine creating a single range covering
- // nearly the entire routine, then it will hide all other lexical blocks
- // and the variables they contain.
- //
- ParentLocals.append(Locals.begin(), Locals.end());
- collectLexicalBlockInfo(Scope.getChildren(), ParentBlocks, ParentLocals);
+
+ // Ignore lexical scopes which do not contain variables.
+ if (!Locals && !Globals)
+ IgnoreScope = true;
+
+ // Ignore lexical scopes which are not lexical blocks.
+ if (!DILB)
+ IgnoreScope = true;
+
+ // Ignore scopes which have too many address ranges to represent in the
+ // current CodeView format or do not have a valid address range.
+ //
+ // For lexical scopes with multiple address ranges you may be tempted to
+ // construct a single range covering every instruction where the block is
+ // live and everything in between. Unfortunately, Visual Studio only
+ // displays variables from the first matching lexical block scope. If the
+ // first lexical block contains exception handling code or cold code which
+ // is moved to the bottom of the routine creating a single range covering
+ // nearly the entire routine, then it will hide all other lexical blocks
+ // and the variables they contain.
+ if (Ranges.size() != 1 || !getLabelAfterInsn(Ranges.front().second))
+ IgnoreScope = true;
+
+ if (IgnoreScope) {
+ // This scope can be safely ignored and eliminating it will reduce the
+ // size of the debug information. Be sure to collect any variable and scope
+ // information from the this scope or any of its children and collapse them
+ // into the parent scope.
+ if (Locals)
+ ParentLocals.append(Locals->begin(), Locals->end());
+ if (Globals)
+ ParentGlobals.append(Globals->begin(), Globals->end());
+ collectLexicalBlockInfo(Scope.getChildren(),
+ ParentBlocks,
+ ParentLocals,
+ ParentGlobals);
return;
}
if (!BlockInsertion.second)
return;
- // Create a lexical block containing the local variables and collect the
- // the lexical block information for the children.
+ // Create a lexical block containing the variables and collect the the
+ // lexical block information for the children.
const InsnRange &Range = Ranges.front();
assert(Range.first && Range.second);
LexicalBlock &Block = BlockInsertion.first->second;
assert(Block.Begin && "missing label for scope begin");
assert(Block.End && "missing label for scope end");
Block.Name = DILB->getName();
- Block.Locals = std::move(Locals);
+ if (Locals)
+ Block.Locals = std::move(*Locals);
+ if (Globals)
+ Block.Globals = std::move(*Globals);
ParentBlocks.push_back(&Block);
- collectLexicalBlockInfo(Scope.getChildren(), Block.Children, Block.Locals);
+ collectLexicalBlockInfo(Scope.getChildren(),
+ Block.Children,
+ Block.Locals,
+ Block.Globals);
}
void CodeViewDebug::endFunctionImpl(const MachineFunction *MF) {
// Build the lexical block structure to emit for this routine.
if (LexicalScope *CFS = LScopes.getCurrentFunctionScope())
- collectLexicalBlockInfo(*CFS, CurFn->ChildBlocks, CurFn->Locals);
+ collectLexicalBlockInfo(*CFS,
+ CurFn->ChildBlocks,
+ CurFn->Locals,
+ CurFn->Globals);
// Clear the scope and variable information from the map which will not be
// valid after we have finished processing this routine. This also prepares
}
}
-void CodeViewDebug::emitDebugInfoForGlobals() {
+void CodeViewDebug::collectGlobalVariableInfo() {
DenseMap<const DIGlobalVariableExpression *, const GlobalVariable *>
GlobalMap;
for (const GlobalVariable &GV : MMI->getModule()->globals()) {
NamedMDNode *CUs = MMI->getModule()->getNamedMetadata("llvm.dbg.cu");
for (const MDNode *Node : CUs->operands()) {
const auto *CU = cast<DICompileUnit>(Node);
-
- // First, emit all globals that are not in a comdat in a single symbol
- // substream. MSVC doesn't like it if the substream is empty, so only open
- // it if we have at least one global to emit.
- switchToDebugSectionForSymbol(nullptr);
- MCSymbol *EndLabel = nullptr;
for (const auto *GVE : CU->getGlobalVariables()) {
- if (const auto *GV = GlobalMap.lookup(GVE))
- if (!GV->hasComdat() && !GV->isDeclarationForLinker()) {
- if (!EndLabel) {
- OS.AddComment("Symbol subsection for globals");
- EndLabel = beginCVSubsection(DebugSubsectionKind::Symbols);
- }
- // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
- emitDebugInfoForGlobal(GVE->getVariable(), GV, Asm->getSymbol(GV));
- }
+ const auto *GV = GlobalMap.lookup(GVE);
+ if (!GV || GV->isDeclarationForLinker())
+ continue;
+ const DIGlobalVariable *DIGV = GVE->getVariable();
+ DIScope *Scope = DIGV->getScope();
+ SmallVector<CVGlobalVariable, 1> *VariableList;
+ if (Scope && isa<DILocalScope>(Scope)) {
+ // Locate a global variable list for this scope, creating one if
+ // necessary.
+ auto Insertion = ScopeGlobals.insert(
+ {Scope, std::unique_ptr<GlobalVariableList>()});
+ if (Insertion.second)
+ Insertion.first->second = llvm::make_unique<GlobalVariableList>();
+ VariableList = Insertion.first->second.get();
+ } else if (GV->hasComdat())
+ // Emit this global variable into a COMDAT section.
+ VariableList = &ComdatVariables;
+ else
+ // Emit this globla variable in a single global symbol section.
+ VariableList = &GlobalVariables;
+ CVGlobalVariable CVGV = {DIGV, GV};
+ VariableList->emplace_back(std::move(CVGV));
}
- if (EndLabel)
- endCVSubsection(EndLabel);
+ }
+}
- // Second, emit each global that is in a comdat into its own .debug$S
- // section along with its own symbol substream.
- for (const auto *GVE : CU->getGlobalVariables()) {
- if (const auto *GV = GlobalMap.lookup(GVE)) {
- if (GV->hasComdat()) {
- MCSymbol *GVSym = Asm->getSymbol(GV);
- OS.AddComment("Symbol subsection for " +
- Twine(GlobalValue::dropLLVMManglingEscape(GV->getName())));
- switchToDebugSectionForSymbol(GVSym);
- EndLabel = beginCVSubsection(DebugSubsectionKind::Symbols);
- // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
- emitDebugInfoForGlobal(GVE->getVariable(), GV, GVSym);
- endCVSubsection(EndLabel);
- }
- }
- }
+void CodeViewDebug::emitDebugInfoForGlobals() {
+ // First, emit all globals that are not in a comdat in a single symbol
+ // substream. MSVC doesn't like it if the substream is empty, so only open
+ // it if we have at least one global to emit.
+ switchToDebugSectionForSymbol(nullptr);
+ if (!GlobalVariables.empty()) {
+ OS.AddComment("Symbol subsection for globals");
+ MCSymbol *EndLabel = beginCVSubsection(DebugSubsectionKind::Symbols);
+ emitGlobalVariableList(GlobalVariables);
+ endCVSubsection(EndLabel);
+ }
+
+ // Second, emit each global that is in a comdat into its own .debug$S
+ // section along with its own symbol substream.
+ for (const CVGlobalVariable &CVGV : ComdatVariables) {
+ MCSymbol *GVSym = Asm->getSymbol(CVGV.GV);
+ OS.AddComment("Symbol subsection for " +
+ Twine(GlobalValue::dropLLVMManglingEscape(CVGV.GV->getName())));
+ switchToDebugSectionForSymbol(GVSym);
+ MCSymbol *EndLabel = beginCVSubsection(DebugSubsectionKind::Symbols);
+ // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
+ emitDebugInfoForGlobal(CVGV.DIGV, CVGV.GV, GVSym);
+ endCVSubsection(EndLabel);
}
}
}
}
+// Emit each global variable in the specified array.
+void CodeViewDebug::emitGlobalVariableList(ArrayRef<CVGlobalVariable> Globals) {
+ for (const CVGlobalVariable &CVGV : Globals) {
+ MCSymbol *GVSym = Asm->getSymbol(CVGV.GV);
+ // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
+ emitDebugInfoForGlobal(CVGV.DIGV, CVGV.GV, GVSym);
+ }
+}
+
void CodeViewDebug::emitDebugInfoForGlobal(const DIGlobalVariable *DIGV,
const GlobalVariable *GV,
MCSymbol *GVSym) {
bool UseReferenceType = false;
};
+ struct CVGlobalVariable {
+ const DIGlobalVariable *DIGV;
+ const GlobalVariable *GV;
+ };
+
struct InlineSite {
SmallVector<LocalVariable, 1> InlinedLocals;
SmallVector<const DILocation *, 1> ChildSites;
// Combines information from DILexicalBlock and LexicalScope.
struct LexicalBlock {
SmallVector<LocalVariable, 1> Locals;
+ SmallVector<CVGlobalVariable, 1> Globals;
SmallVector<LexicalBlock *, 1> Children;
const MCSymbol *Begin;
const MCSymbol *End;
SmallVector<const DILocation *, 1> ChildSites;
SmallVector<LocalVariable, 1> Locals;
+ SmallVector<CVGlobalVariable, 1> Globals;
std::unordered_map<const DILexicalBlockBase*, LexicalBlock> LexicalBlocks;
// and LexicalBlocks.
DenseMap<const LexicalScope *, SmallVector<LocalVariable, 1>> ScopeVariables;
+ // Map to separate global variables according to the lexical scope they
+ // belong in. A null local scope represents the global scope.
+ typedef SmallVector<CVGlobalVariable, 1> GlobalVariableList;
+ DenseMap<const DIScope*, std::unique_ptr<GlobalVariableList> > ScopeGlobals;
+
+ // Array of global variables which need to be emitted into a COMDAT section.
+ SmallVector<CVGlobalVariable, 1> ComdatVariables;
+
+ // Array of non-COMDAT global variables.
+ SmallVector<CVGlobalVariable, 1> GlobalVariables;
+
/// The set of comdat .debug$S sections that we've seen so far. Each section
/// must start with a magic version number that must only be emitted once.
/// This set tracks which sections we've already opened.
void emitDebugInfoForFunction(const Function *GV, FunctionInfo &FI);
- void emitDebugInfoForGlobals();
-
void emitDebugInfoForRetainedTypes();
void
emitDebugInfoForUDTs(ArrayRef<std::pair<std::string, const DIType *>> UDTs);
+ void emitDebugInfoForGlobals();
+ void emitGlobalVariableList(ArrayRef<CVGlobalVariable> Globals);
void emitDebugInfoForGlobal(const DIGlobalVariable *DIGV,
const GlobalVariable *GV, MCSymbol *GVSym);
using InlinedEntity = DbgValueHistoryMap::InlinedEntity;
+ void collectGlobalVariableInfo();
void collectVariableInfo(const DISubprogram *SP);
void collectVariableInfoFromMFTable(DenseSet<InlinedEntity> &Processed);
// scopes, and populate it with local variables.
void collectLexicalBlockInfo(SmallVectorImpl<LexicalScope *> &Scopes,
SmallVectorImpl<LexicalBlock *> &Blocks,
- SmallVectorImpl<LocalVariable> &Locals);
+ SmallVectorImpl<LocalVariable> &Locals,
+ SmallVectorImpl<CVGlobalVariable> &Globals);
void collectLexicalBlockInfo(LexicalScope &Scope,
SmallVectorImpl<LexicalBlock *> &ParentBlocks,
- SmallVectorImpl<LocalVariable> &ParentLocals);
+ SmallVectorImpl<LocalVariable> &ParentLocals,
+ SmallVectorImpl<CVGlobalVariable> &ParentGlobals);
/// Records information about a local variable in the appropriate scope. In
/// particular, locals from inlined code live inside the inlining site.
--- /dev/null
+; RUN: llc < %s -filetype=obj | llvm-readobj - -codeview | FileCheck %s
+;
+; This test verifies global variables are emitted within the correct scope.
+;
+; -- global_visibility.cpp ----------------------------------------------------
+; 1
+; 2 int global_int = 0;
+; 3
+; 4 template <typename T> struct A {
+; 5 static T comdat_int;
+; 6 static T set(T value) { T r = comdat_int; comdat_int = value; return r; };
+; 7 };
+; 8
+; 9 template <typename T> T A<T>::comdat_int = 42;
+; 10
+; 11 void foo() {
+; 12 static int local_int = 1;
+; 13 {
+; 14 static int nested_int = 2;
+; 15 local_int = nested_int;
+; 16 }
+; 17 local_int = A<int>::set(42);
+; 18 }
+; 19
+; 20 void bar() {
+; 21 static int local_int = 3;
+; 22 {
+; 23 static int nested_int = 4;
+; 24 local_int = nested_int;
+; 25 }
+; 26 local_int = A<unsigned>::set(42);
+; 27 }
+; 28
+; -----------------------------------------------------------------------------
+;
+; $ clang -S -emit-llvm -g -gcodeview global_visibility.cpp
+;
+; NOTE: The scope for both DIGlobalVariable's named "nested_int" should refer
+; to the appropriate DILexicalBlock, not a DISubprogram.
+;
+
+; CHECK: CodeViewDebugInfo [
+; CHECK: Section: .debug$S (9)
+
+; CHECK: Subsection [
+; CHECK: SubSectionType: Symbols (0xF1)
+; CHECK: GlobalProcIdSym {
+; CHECK: Kind: S_GPROC32_ID (0x1147)
+; CHECK: DisplayName: foo
+; CHECK: LinkageName: ?foo@@YAXXZ
+; CHECK: }
+; CHECK: DataSym {
+; CHECK: Kind: S_LDATA32 (0x110C)
+; CHECK: DisplayName: local_int
+; CHECK: LinkageName: ?local_int@?1??foo@@YAXXZ@4HA
+; CHECK: }
+; CHECK: BlockSym {
+; CHECK: Kind: S_BLOCK32 (0x1103)
+; CHECK: }
+; CHECK: DataSym {
+; CHECK: Kind: S_LDATA32 (0x110C)
+; CHECK: DisplayName: nested_int
+; CHECK: LinkageName: ?nested_int@?1??foo@@YAXXZ@4HA
+; CHECK: }
+; CHECK: ScopeEndSym {
+; CHECK: Kind: S_END (0x6)
+; CHECK: }
+; CHECK: ProcEnd {
+; CHECK: Kind: S_PROC_ID_END (0x114F)
+; CHECK: }
+; CHECK: ]
+; CHECK: Subsection [
+; CHECK: SubSectionType: Symbols (0xF1)
+; CHECK: GlobalProcIdSym {
+; CHECK: Kind: S_GPROC32_ID (0x1147)
+; CHECK: DisplayName: bar
+; CHECK: LinkageName: ?bar@@YAXXZ
+; CHECK: }
+; CHECK: DataSym {
+; CHECK: Kind: S_LDATA32 (0x110C)
+; CHECK: DisplayName: local_int
+; CHECK: LinkageName: ?local_int@?1??bar@@YAXXZ@4HA
+; CHECK: }
+; CHECK: BlockSym {
+; CHECK: Kind: S_BLOCK32 (0x1103)
+; CHECK: }
+; CHECK: DataSym {
+; CHECK: Kind: S_LDATA32 (0x110C)
+; CHECK: DisplayName: nested_int
+; CHECK: LinkageName: ?nested_int@?1??bar@@YAXXZ@4HA
+; CHECK: }
+; CHECK: ScopeEndSym {
+; CHECK: Kind: S_END (0x6)
+; CHECK: }
+; CHECK: ProcEnd {
+; CHECK: Kind: S_PROC_ID_END (0x114F)
+; CHECK: }
+; CHECK: ]
+; CHECK: Subsection [
+; CHECK: SubSectionType: Symbols (0xF1)
+; CHECK: GlobalData {
+; CHECK: Kind: S_GDATA32 (0x110D)
+; CHECK: DisplayName: global_int
+; CHECK: LinkageName: ?global_int@@3HA
+; CHECK: }
+; CHECK: ]
+; CHECK: ]
+; CHECK: CodeViewDebugInfo [
+; CHECK: Section: .debug$S (16)
+; CHECK: Subsection [
+; CHECK: SubSectionType: Symbols (0xF1)
+; CHECK: GlobalData {
+; CHECK: Kind: S_GDATA32 (0x110D)
+; CHECK: DisplayName: comdat_int
+; CHECK: LinkageName: ?comdat_int@?$A@H@@2HA
+; CHECK: }
+; CHECK: ]
+; CHECK: ]
+; CHECK: CodeViewDebugInfo [
+; CHECK: Section: .debug$S (17)
+; CHECK: Subsection [
+; CHECK: SubSectionType: Symbols (0xF1)
+; CHECK: GlobalData {
+; CHECK: Kind: S_GDATA32 (0x110D)
+; CHECK: DisplayName: comdat_int
+; CHECK: LinkageName: ?comdat_int@?$A@I@@2IA
+; CHECK: }
+; CHECK: ]
+; CHECK: ]
+;
+
+; ModuleID = 'global_visibility.cpp'
+source_filename = "global_visibility.cpp"
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc19.15.26730"
+
+$"?set@?$A@H@@SAHH@Z" = comdat any
+
+$"?set@?$A@I@@SAII@Z" = comdat any
+
+$"?comdat_int@?$A@H@@2HA" = comdat any
+
+$"?comdat_int@?$A@I@@2IA" = comdat any
+
+@"?global_int@@3HA" = dso_local global i32 0, align 4, !dbg !0
+@"?local_int@?1??foo@@YAXXZ@4HA" = internal global i32 1, align 4, !dbg !6
+@"?nested_int@?1??foo@@YAXXZ@4HA" = internal global i32 2, align 4, !dbg !12
+@"?local_int@?1??bar@@YAXXZ@4HA" = internal global i32 3, align 4, !dbg !14
+@"?nested_int@?1??bar@@YAXXZ@4HA" = internal global i32 4, align 4, !dbg !17
+@"?comdat_int@?$A@H@@2HA" = linkonce_odr dso_local global i32 42, comdat, align 4, !dbg !19
+@"?comdat_int@?$A@I@@2IA" = linkonce_odr dso_local global i32 42, comdat, align 4, !dbg !29
+
+; Function Attrs: noinline optnone uwtable
+define dso_local void @"?foo@@YAXXZ"() #0 !dbg !8 {
+entry:
+ %0 = load i32, i32* @"?nested_int@?1??foo@@YAXXZ@4HA", align 4, !dbg !45
+ store i32 %0, i32* @"?local_int@?1??foo@@YAXXZ@4HA", align 4, !dbg !45
+ %call = call i32 @"?set@?$A@H@@SAHH@Z"(i32 42), !dbg !47
+ store i32 %call, i32* @"?local_int@?1??foo@@YAXXZ@4HA", align 4, !dbg !47
+ ret void, !dbg !48
+}
+
+; Function Attrs: noinline nounwind optnone uwtable
+define linkonce_odr dso_local i32 @"?set@?$A@H@@SAHH@Z"(i32 %value) #1 comdat align 2 !dbg !49 {
+entry:
+ %value.addr = alloca i32, align 4
+ %r = alloca i32, align 4
+ store i32 %value, i32* %value.addr, align 4
+ call void @llvm.dbg.declare(metadata i32* %value.addr, metadata !50, metadata !DIExpression()), !dbg !51
+ call void @llvm.dbg.declare(metadata i32* %r, metadata !52, metadata !DIExpression()), !dbg !51
+ %0 = load i32, i32* @"?comdat_int@?$A@H@@2HA", align 4, !dbg !51
+ store i32 %0, i32* %r, align 4, !dbg !51
+ %1 = load i32, i32* %value.addr, align 4, !dbg !51
+ store i32 %1, i32* @"?comdat_int@?$A@H@@2HA", align 4, !dbg !51
+ %2 = load i32, i32* %r, align 4, !dbg !51
+ ret i32 %2, !dbg !51
+}
+
+; Function Attrs: noinline optnone uwtable
+define dso_local void @"?bar@@YAXXZ"() #0 !dbg !16 {
+entry:
+ %0 = load i32, i32* @"?nested_int@?1??bar@@YAXXZ@4HA", align 4, !dbg !53
+ store i32 %0, i32* @"?local_int@?1??bar@@YAXXZ@4HA", align 4, !dbg !53
+ %call = call i32 @"?set@?$A@I@@SAII@Z"(i32 42), !dbg !55
+ store i32 %call, i32* @"?local_int@?1??bar@@YAXXZ@4HA", align 4, !dbg !55
+ ret void, !dbg !56
+}
+
+; Function Attrs: noinline nounwind optnone uwtable
+define linkonce_odr dso_local i32 @"?set@?$A@I@@SAII@Z"(i32 %value) #1 comdat align 2 !dbg !57 {
+entry:
+ %value.addr = alloca i32, align 4
+ %r = alloca i32, align 4
+ store i32 %value, i32* %value.addr, align 4
+ call void @llvm.dbg.declare(metadata i32* %value.addr, metadata !58, metadata !DIExpression()), !dbg !59
+ call void @llvm.dbg.declare(metadata i32* %r, metadata !60, metadata !DIExpression()), !dbg !59
+ %0 = load i32, i32* @"?comdat_int@?$A@I@@2IA", align 4, !dbg !59
+ store i32 %0, i32* %r, align 4, !dbg !59
+ %1 = load i32, i32* %value.addr, align 4, !dbg !59
+ store i32 %1, i32* @"?comdat_int@?$A@I@@2IA", align 4, !dbg !59
+ %2 = load i32, i32* %r, align 4, !dbg !59
+ ret i32 %2, !dbg !59
+}
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
+
+attributes #0 = { noinline optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { nounwind readnone speculatable }
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!40, !41, !42, !43}
+!llvm.ident = !{!44}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "global_int", linkageName: "?global_int@@3HA", scope: !2, file: !3, line: 2, type: !11, isLocal: false, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 8.0.0 (trunk)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
+!3 = !DIFile(filename: "global_visibility.cpp", directory: "C:\5Cpath\5Cto\5Cdirectory", checksumkind: CSK_MD5, checksum: "f59b9e5de12391471b1a61888cb68a3e")
+!4 = !{}
+!5 = !{!0, !6, !12, !14, !17, !19, !29}
+!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
+!7 = distinct !DIGlobalVariable(name: "local_int", scope: !8, file: !3, line: 12, type: !11, isLocal: true, isDefinition: true)
+!8 = distinct !DISubprogram(name: "foo", linkageName: "?foo@@YAXXZ", scope: !3, file: !3, line: 11, type: !9, scopeLine: 11, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !4)
+!9 = !DISubroutineType(types: !10)
+!10 = !{null}
+!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression())
+!13 = distinct !DIGlobalVariable(name: "nested_int", scope: !46, file: !3, line: 14, type: !11, isLocal: true, isDefinition: true)
+!14 = !DIGlobalVariableExpression(var: !15, expr: !DIExpression())
+!15 = distinct !DIGlobalVariable(name: "local_int", scope: !16, file: !3, line: 21, type: !11, isLocal: true, isDefinition: true)
+!16 = distinct !DISubprogram(name: "bar", linkageName: "?bar@@YAXXZ", scope: !3, file: !3, line: 20, type: !9, scopeLine: 20, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !4)
+!17 = !DIGlobalVariableExpression(var: !18, expr: !DIExpression())
+!18 = distinct !DIGlobalVariable(name: "nested_int", scope: !54, file: !3, line: 23, type: !11, isLocal: true, isDefinition: true)
+!19 = !DIGlobalVariableExpression(var: !20, expr: !DIExpression())
+!20 = distinct !DIGlobalVariable(name: "comdat_int", linkageName: "?comdat_int@?$A@H@@2HA", scope: !2, file: !3, line: 9, type: !11, isLocal: false, isDefinition: true, declaration: !21)
+!21 = !DIDerivedType(tag: DW_TAG_member, name: "comdat_int", scope: !22, file: !3, line: 5, baseType: !11, flags: DIFlagStaticMember)
+!22 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A<int>", file: !3, line: 4, size: 8, flags: DIFlagTypePassByValue | DIFlagTrivial, elements: !23, templateParams: !27, identifier: ".?AU?$A@H@@")
+!23 = !{!21, !24}
+!24 = !DISubprogram(name: "set", linkageName: "?set@?$A@H@@SAHH@Z", scope: !22, file: !3, line: 6, type: !25, scopeLine: 6, flags: DIFlagPrototyped | DIFlagStaticMember, spFlags: 0)
+!25 = !DISubroutineType(types: !26)
+!26 = !{!11, !11}
+!27 = !{!28}
+!28 = !DITemplateTypeParameter(name: "T", type: !11)
+!29 = !DIGlobalVariableExpression(var: !30, expr: !DIExpression())
+!30 = distinct !DIGlobalVariable(name: "comdat_int", linkageName: "?comdat_int@?$A@I@@2IA", scope: !2, file: !3, line: 9, type: !31, isLocal: false, isDefinition: true, declaration: !32)
+!31 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
+!32 = !DIDerivedType(tag: DW_TAG_member, name: "comdat_int", scope: !33, file: !3, line: 5, baseType: !31, flags: DIFlagStaticMember)
+!33 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A<unsigned int>", file: !3, line: 4, size: 8, flags: DIFlagTypePassByValue | DIFlagTrivial, elements: !34, templateParams: !38, identifier: ".?AU?$A@I@@")
+!34 = !{!32, !35}
+!35 = !DISubprogram(name: "set", linkageName: "?set@?$A@I@@SAII@Z", scope: !33, file: !3, line: 6, type: !36, scopeLine: 6, flags: DIFlagPrototyped | DIFlagStaticMember, spFlags: 0)
+!36 = !DISubroutineType(types: !37)
+!37 = !{!31, !31}
+!38 = !{!39}
+!39 = !DITemplateTypeParameter(name: "T", type: !31)
+!40 = !{i32 2, !"CodeView", i32 1}
+!41 = !{i32 2, !"Debug Info Version", i32 3}
+!42 = !{i32 1, !"wchar_size", i32 2}
+!43 = !{i32 7, !"PIC Level", i32 2}
+!44 = !{!"clang version 8.0.0 (trunk)"}
+!45 = !DILocation(line: 15, scope: !46)
+!46 = distinct !DILexicalBlock(scope: !8, file: !3, line: 13)
+!47 = !DILocation(line: 17, scope: !8)
+!48 = !DILocation(line: 18, scope: !8)
+!49 = distinct !DISubprogram(name: "set", linkageName: "?set@?$A@H@@SAHH@Z", scope: !22, file: !3, line: 6, type: !25, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, declaration: !24, retainedNodes: !4)
+!50 = !DILocalVariable(name: "value", arg: 1, scope: !49, file: !3, line: 6, type: !11)
+!51 = !DILocation(line: 6, scope: !49)
+!52 = !DILocalVariable(name: "r", scope: !49, file: !3, line: 6, type: !11)
+!53 = !DILocation(line: 24, scope: !54)
+!54 = distinct !DILexicalBlock(scope: !16, file: !3, line: 22)
+!55 = !DILocation(line: 26, scope: !16)
+!56 = !DILocation(line: 27, scope: !16)
+!57 = distinct !DISubprogram(name: "set", linkageName: "?set@?$A@I@@SAII@Z", scope: !33, file: !3, line: 6, type: !36, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, declaration: !35, retainedNodes: !4)
+!58 = !DILocalVariable(name: "value", arg: 1, scope: !57, file: !3, line: 6, type: !31)
+!59 = !DILocation(line: 6, scope: !57)
+!60 = !DILocalVariable(name: "r", scope: !57, file: !3, line: 6, type: !31)
; CHECK: FunctionType: void (int& __restrict) (0x1011)
; CHECK: Name: g
; CHECK: }
-; CHECK: ArgList (0x1013) {
+; CHECK: Modifier (0x1013) {
+; CHECK: TypeLeafKind: LF_MODIFIER (0x1001)
+; CHECK: ModifiedType: char (0x70)
+; CHECK: Modifiers [ (0x1)
+; CHECK: Const (0x1)
+; CHECK: ]
+; CHECK: }
+; CHECK: Array (0x1014) {
+; CHECK: TypeLeafKind: LF_ARRAY (0x1503)
+; CHECK: ElementType: const char (0x1013)
+; CHECK: IndexType: unsigned __int64 (0x23)
+; CHECK: SizeOf: 4
+; CHECK: Name:
+; CHECK: }
+; CHECK: ArgList (0x1015) {
; CHECK: TypeLeafKind: LF_ARGLIST (0x1201)
; CHECK: NumArgs: 0
; CHECK: Arguments [
; CHECK: ]
; CHECK: }
-; CHECK: Procedure (0x1014) {
+; CHECK: Procedure (0x1016) {
; CHECK: TypeLeafKind: LF_PROCEDURE (0x1008)
; CHECK: ReturnType: void (0x3)
; CHECK: CallingConvention: NearC (0x0)
; CHECK: FunctionOptions [ (0x0)
; CHECK: ]
; CHECK: NumParameters: 0
-; CHECK: ArgListType: () (0x1013)
+; CHECK: ArgListType: () (0x1015)
; CHECK: }
-; CHECK: FuncId (0x1015) {
+; CHECK: FuncId (0x1017) {
; CHECK: TypeLeafKind: LF_FUNC_ID (0x1601)
; CHECK: ParentScope: 0x0
-; CHECK: FunctionType: void () (0x1014)
+; CHECK: FunctionType: void () (0x1016)
; CHECK: Name: h
; CHECK: }
-; CHECK: Struct (0x1016) {
+; CHECK: Struct (0x1018) {
; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505)
; CHECK: MemberCount: 0
; CHECK: Properties [ (0x180)
; CHECK: SizeOf: 0
; CHECK: Name: h::Foo
; CHECK: }
-; CHECK: Pointer (0x1017) {
+; CHECK: Pointer (0x1019) {
; CHECK: TypeLeafKind: LF_POINTER (0x1002)
-; CHECK: PointeeType: h::Foo (0x1016)
+; CHECK: PointeeType: h::Foo (0x1018)
; CHECK: PtrType: Near64 (0xC)
; CHECK: PtrMode: Pointer (0x0)
; CHECK: IsFlat: 0
; CHECK: IsRestrict: 0
; CHECK: SizeOf: 8
; CHECK: }
-; CHECK: ArgList (0x1018) {
+; CHECK: ArgList (0x101A) {
; CHECK: TypeLeafKind: LF_ARGLIST (0x1201)
; CHECK: NumArgs: 1
; CHECK: Arguments [
; CHECK: ArgType: int (0x74)
; CHECK: ]
; CHECK: }
-; CHECK: MemberFunction (0x1019) {
+; CHECK: MemberFunction (0x101B) {
; CHECK: TypeLeafKind: LF_MFUNCTION (0x1009)
; CHECK: ReturnType: int (0x74)
-; CHECK: ClassType: h::Foo (0x1016)
-; CHECK: ThisType: h::Foo* const (0x1017)
+; CHECK: ClassType: h::Foo (0x1018)
+; CHECK: ThisType: h::Foo* const (0x1019)
; CHECK: CallingConvention: NearC (0x0)
; CHECK: FunctionOptions [ (0x0)
; CHECK: ]
; CHECK: NumParameters: 1
-; CHECK: ArgListType: (int) (0x1018)
+; CHECK: ArgListType: (int) (0x101A)
; CHECK: ThisAdjustment: 0
; CHECK: }
-; CHECK: FieldList (0x101A) {
+; CHECK: FieldList (0x101C) {
; CHECK: TypeLeafKind: LF_FIELDLIST (0x1203)
; CHECK: DataMember {
; CHECK: TypeLeafKind: LF_MEMBER (0x150D)
; CHECK: OneMethod {
; CHECK: TypeLeafKind: LF_ONEMETHOD (0x1511)
; CHECK: AccessSpecifier: Public (0x3)
-; CHECK: Type: int h::Foo::(int) (0x1019)
+; CHECK: Type: int h::Foo::(int) (0x101B)
; CHECK: Name: func
; CHECK: }
; CHECK: }
-; CHECK: Struct (0x101B) {
+; CHECK: Struct (0x101D) {
; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505)
; CHECK: MemberCount: 2
; CHECK: Properties [ (0x100)
; CHECK: Scoped (0x100)
; CHECK: ]
-; CHECK: FieldList: <field list> (0x101A)
+; CHECK: FieldList: <field list> (0x101C)
; CHECK: DerivedFrom: 0x0
; CHECK: VShape: 0x0
; CHECK: SizeOf: 4
; CHECK: Name: h::Foo
; CHECK: }
-; CHECK: Pointer (0x101D) {
+; CHECK: Pointer (0x101F) {
; CHECK: TypeLeafKind: LF_POINTER (0x1002)
; CHECK: PointeeType: int (0x74)
; CHECK: PtrType: Near64 (0xC)
; CHECK: IsUnaligned: 0
; CHECK: IsRestrict: 1
; CHECK: SizeOf: 4
-; CHECK: ClassType: h::Foo (0x1016)
+; CHECK: ClassType: h::Foo (0x1018)
; CHECK: Representation: SingleInheritanceData (0x1)
; CHECK: }
-; CHECK: Pointer (0x101E) {
+; CHECK: Pointer (0x1020) {
; CHECK: TypeLeafKind: LF_POINTER (0x1002)
-; CHECK: PointeeType: int h::Foo::(int) (0x1019)
+; CHECK: PointeeType: int h::Foo::(int) (0x101B)
; CHECK: PtrType: Near64 (0xC)
; CHECK: PtrMode: PointerToMemberFunction (0x3)
; CHECK: IsFlat: 0
; CHECK: IsUnaligned: 0
; CHECK: IsRestrict: 0
; CHECK: SizeOf: 8
-; CHECK: ClassType: h::Foo (0x1016)
+; CHECK: ClassType: h::Foo (0x1018)
; CHECK: Representation: SingleInheritanceFunction (0x5)
; CHECK: }
-; CHECK: MemberFuncId (0x101F) {
+; CHECK: MemberFuncId (0x1021) {
; CHECK: TypeLeafKind: LF_MFUNC_ID (0x1602)
-; CHECK: ClassType: h::Foo (0x1016)
-; CHECK: FunctionType: int h::Foo::(int) (0x1019)
+; CHECK: ClassType: h::Foo (0x1018)
+; CHECK: FunctionType: int h::Foo::(int) (0x101B)
; CHECK: Name: func
; CHECK: }
-; CHECK: Pointer (0x1020) {
+; CHECK: Pointer (0x1022) {
; CHECK: TypeLeafKind: LF_POINTER (0x1002)
-; CHECK: PointeeType: h::Foo (0x1016)
+; CHECK: PointeeType: h::Foo (0x1018)
; CHECK: PtrType: Near64 (0xC)
; CHECK: PtrMode: Pointer (0x0)
; CHECK: IsFlat: 0
; CHECK: IsRestrict: 0
; CHECK: SizeOf: 8
; CHECK: }
-; CHECK: Modifier (0x1021) {
-; CHECK: TypeLeafKind: LF_MODIFIER (0x1001)
-; CHECK: ModifiedType: char (0x70)
-; CHECK: Modifiers [ (0x1)
-; CHECK: Const (0x1)
-; CHECK: ]
-; CHECK: }
-; CHECK: Array (0x1022) {
-; CHECK: TypeLeafKind: LF_ARRAY (0x1503)
-; CHECK: ElementType: const char (0x1021)
-; CHECK: IndexType: unsigned __int64 (0x23)
-; CHECK: SizeOf: 4
-; CHECK: Name:
-; CHECK: }
; CHECK: ]
; CHECK-LABEL: CodeViewDebugInfo [
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