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[CodeView] Initial support for emitting S_BLOCK32 symbols for lexical scopes
This patch sorts local variables by lexical scope and emits them inside an appropriate S_BLOCK32 CodeView symbol. Differential Revision: https://reviews.llvm.org/D42926 llvm-svn: 327620
This commit is contained in:
Brock Wyma
parent
3a27395ee7
commit
2007fc2411
@ -365,15 +365,15 @@ unsigned CodeViewDebug::getPointerSizeInBytes() {
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}
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void CodeViewDebug::recordLocalVariable(LocalVariable &&Var,
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const DILocation *InlinedAt) {
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if (InlinedAt) {
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const LexicalScope *LS) {
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if (const DILocation *InlinedAt = LS->getInlinedAt()) {
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// This variable was inlined. Associate it with the InlineSite.
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const DISubprogram *Inlinee = Var.DIVar->getScope()->getSubprogram();
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InlineSite &Site = getInlineSite(InlinedAt, Inlinee);
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Site.InlinedLocals.emplace_back(Var);
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} else {
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// This variable goes in the main ProcSym.
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CurFn->Locals.emplace_back(Var);
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// This variable goes into the corresponding lexical scope.
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ScopeVariables[LS].emplace_back(Var);
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}
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}
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@ -905,6 +905,7 @@ void CodeViewDebug::emitDebugInfoForFunction(const Function *GV,
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OS.EmitLabel(ProcRecordEnd);
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emitLocalVariableList(FI.Locals);
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emitLexicalBlockList(FI.ChildBlocks, FI);
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// Emit inlined call site information. Only emit functions inlined directly
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// into the parent function. We'll emit the other sites recursively as part
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@ -1025,7 +1026,7 @@ void CodeViewDebug::collectVariableInfoFromMFTable(
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LocalVariable Var;
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Var.DIVar = VI.Var;
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Var.DefRanges.emplace_back(std::move(DefRange));
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recordLocalVariable(std::move(Var), VI.Loc->getInlinedAt());
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recordLocalVariable(std::move(Var), Scope);
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}
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}
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@ -1156,7 +1157,7 @@ void CodeViewDebug::collectVariableInfo(const DISubprogram *SP) {
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Var.DIVar = DIVar;
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calculateRanges(Var, Ranges);
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recordLocalVariable(std::move(Var), InlinedAt);
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recordLocalVariable(std::move(Var), Scope);
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}
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}
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@ -2362,6 +2363,128 @@ void CodeViewDebug::emitLocalVariable(const LocalVariable &Var) {
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}
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}
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void CodeViewDebug::emitLexicalBlockList(ArrayRef<LexicalBlock *> Blocks,
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const FunctionInfo& FI) {
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for (LexicalBlock *Block : Blocks)
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emitLexicalBlock(*Block, FI);
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}
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/// Emit an S_BLOCK32 and S_END record pair delimiting the contents of a
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/// lexical block scope.
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void CodeViewDebug::emitLexicalBlock(const LexicalBlock &Block,
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const FunctionInfo& FI) {
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MCSymbol *RecordBegin = MMI->getContext().createTempSymbol(),
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*RecordEnd = MMI->getContext().createTempSymbol();
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// Lexical block symbol record.
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OS.AddComment("Record length");
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OS.emitAbsoluteSymbolDiff(RecordEnd, RecordBegin, 2); // Record Length
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OS.EmitLabel(RecordBegin);
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OS.AddComment("Record kind: S_BLOCK32");
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OS.EmitIntValue(SymbolKind::S_BLOCK32, 2); // Record Kind
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OS.AddComment("PtrParent");
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OS.EmitIntValue(0, 4); // PtrParent
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OS.AddComment("PtrEnd");
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OS.EmitIntValue(0, 4); // PtrEnd
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OS.AddComment("Code size");
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OS.emitAbsoluteSymbolDiff(Block.End, Block.Begin, 4); // Code Size
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OS.AddComment("Function section relative address");
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OS.EmitCOFFSecRel32(Block.Begin, /*Offset=*/0); // Func Offset
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OS.AddComment("Function section index");
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OS.EmitCOFFSectionIndex(FI.Begin); // Func Symbol
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OS.AddComment("Lexical block name");
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emitNullTerminatedSymbolName(OS, Block.Name); // Name
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OS.EmitLabel(RecordEnd);
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// Emit variables local to this lexical block.
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emitLocalVariableList(Block.Locals);
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// Emit lexical blocks contained within this block.
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emitLexicalBlockList(Block.Children, FI);
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// Close the lexical block scope.
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OS.AddComment("Record length");
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OS.EmitIntValue(2, 2); // Record Length
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OS.AddComment("Record kind: S_END");
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OS.EmitIntValue(SymbolKind::S_END, 2); // Record Kind
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}
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/// Convenience routine for collecting lexical block information for a list
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/// of lexical scopes.
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void CodeViewDebug::collectLexicalBlockInfo(
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SmallVectorImpl<LexicalScope *> &Scopes,
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SmallVectorImpl<LexicalBlock *> &Blocks,
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SmallVectorImpl<LocalVariable> &Locals) {
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for (LexicalScope *Scope : Scopes)
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collectLexicalBlockInfo(*Scope, Blocks, Locals);
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}
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/// Populate the lexical blocks and local variable lists of the parent with
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/// information about the specified lexical scope.
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void CodeViewDebug::collectLexicalBlockInfo(
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LexicalScope &Scope,
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SmallVectorImpl<LexicalBlock *> &ParentBlocks,
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SmallVectorImpl<LocalVariable> &ParentLocals) {
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if (Scope.isAbstractScope())
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return;
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auto LocalsIter = ScopeVariables.find(&Scope);
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if (LocalsIter == ScopeVariables.end()) {
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// This scope does not contain variables and can be eliminated.
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collectLexicalBlockInfo(Scope.getChildren(), ParentBlocks, ParentLocals);
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return;
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}
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SmallVectorImpl<LocalVariable> &Locals = LocalsIter->second;
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const DILexicalBlock *DILB = dyn_cast<DILexicalBlock>(Scope.getScopeNode());
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if (!DILB) {
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// This scope is not a lexical block and can be eliminated, but keep any
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// local variables it contains.
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ParentLocals.append(Locals.begin(), Locals.end());
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collectLexicalBlockInfo(Scope.getChildren(), ParentBlocks, ParentLocals);
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return;
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}
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const SmallVectorImpl<InsnRange> &Ranges = Scope.getRanges();
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if (Ranges.size() != 1 || !getLabelAfterInsn(Ranges.front().second)) {
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// This lexical block scope has too many address ranges to represent in the
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// current CodeView format or does not have a valid address range.
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// Eliminate this lexical scope and promote any locals it contains to the
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// parent scope.
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//
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// For lexical scopes with multiple address ranges you may be tempted to
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// construct a single range covering every instruction where the block is
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// live and everything in between. Unfortunately, Visual Studio only
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// displays variables from the first matching lexical block scope. If the
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// first lexical block contains exception handling code or cold code which
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// is moved to the bottom of the routine creating a single range covering
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// nearly the entire routine, then it will hide all other lexical blocks
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// and the variables they contain.
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//
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ParentLocals.append(Locals.begin(), Locals.end());
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collectLexicalBlockInfo(Scope.getChildren(), ParentBlocks, ParentLocals);
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return;
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}
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// Create a new CodeView lexical block for this lexical scope. If we've
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// seen this DILexicalBlock before then the scope tree is malformed and
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// we can handle this gracefully by not processing it a second time.
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auto BlockInsertion = CurFn->LexicalBlocks.insert({DILB, LexicalBlock()});
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if (!BlockInsertion.second)
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return;
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// Create a lexical block containing the local variables and collect the
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// the lexical block information for the children.
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const InsnRange &Range = Ranges.front();
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LexicalBlock &Block = BlockInsertion.first->second;
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Block.Begin = getLabelBeforeInsn(Range.first);
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Block.End = getLabelAfterInsn(Range.second);
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Block.Name = DILB->getName();
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Block.Locals = std::move(Locals);
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ParentBlocks.push_back(&Block);
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collectLexicalBlockInfo(Scope.getChildren(), Block.Children, Block.Locals);
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}
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void CodeViewDebug::endFunctionImpl(const MachineFunction *MF) {
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const Function &GV = MF->getFunction();
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assert(FnDebugInfo.count(&GV));
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@ -2369,6 +2492,15 @@ void CodeViewDebug::endFunctionImpl(const MachineFunction *MF) {
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collectVariableInfo(GV.getSubprogram());
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// Build the lexical block structure to emit for this routine.
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if (LexicalScope *CFS = LScopes.getCurrentFunctionScope())
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collectLexicalBlockInfo(*CFS, CurFn->ChildBlocks, CurFn->Locals);
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// Clear the scope and variable information from the map which will not be
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// valid after we have finished processing this routine. This also prepares
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// the map for the subsequent routine.
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ScopeVariables.clear();
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// Don't emit anything if we don't have any line tables.
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if (!CurFn->HaveLineInfo) {
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FnDebugInfo.erase(&GV);
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@ -107,6 +107,15 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
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unsigned SiteFuncId = 0;
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};
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// Combines information from DILexicalBlock and LexicalScope.
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struct LexicalBlock {
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SmallVector<LocalVariable, 1> Locals;
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SmallVector<LexicalBlock *, 1> Children;
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const MCSymbol *Begin;
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const MCSymbol *End;
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StringRef Name;
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};
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// For each function, store a vector of labels to its instructions, as well as
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// to the end of the function.
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struct FunctionInfo {
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@ -119,6 +128,11 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
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SmallVector<LocalVariable, 1> Locals;
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std::unordered_map<const DILexicalBlockBase*, LexicalBlock> LexicalBlocks;
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// Lexical blocks containing local variables.
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SmallVector<LexicalBlock *, 1> ChildBlocks;
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std::vector<std::pair<MCSymbol *, MDNode *>> Annotations;
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const MCSymbol *Begin = nullptr;
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@ -129,6 +143,12 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
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};
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FunctionInfo *CurFn = nullptr;
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// Map used to seperate variables according to the lexical scope they belong
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// in. This is populated by recordLocalVariable() before
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// collectLexicalBlocks() separates the variables between the FunctionInfo
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// and LexicalBlocks.
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DenseMap<const LexicalScope *, SmallVector<LocalVariable, 1>> ScopeVariables;
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/// The set of comdat .debug$S sections that we've seen so far. Each section
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/// must start with a magic version number that must only be emitted once.
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/// This set tracks which sections we've already opened.
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@ -253,9 +273,18 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
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void collectVariableInfoFromMFTable(DenseSet<InlinedVariable> &Processed);
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// Construct the lexical block tree for a routine, pruning emptpy lexical
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// scopes, and populate it with local variables.
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void collectLexicalBlockInfo(SmallVectorImpl<LexicalScope *> &Scopes,
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SmallVectorImpl<LexicalBlock *> &Blocks,
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SmallVectorImpl<LocalVariable> &Locals);
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void collectLexicalBlockInfo(LexicalScope &Scope,
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SmallVectorImpl<LexicalBlock *> &ParentBlocks,
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SmallVectorImpl<LocalVariable> &ParentLocals);
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/// Records information about a local variable in the appropriate scope. In
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/// particular, locals from inlined code live inside the inlining site.
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void recordLocalVariable(LocalVariable &&Var, const DILocation *Loc);
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void recordLocalVariable(LocalVariable &&Var, const LexicalScope *LS);
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/// Emits local variables in the appropriate order.
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void emitLocalVariableList(ArrayRef<LocalVariable> Locals);
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@ -263,6 +292,13 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
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/// Emits an S_LOCAL record and its associated defined ranges.
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void emitLocalVariable(const LocalVariable &Var);
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/// Emits a sequence of lexical block scopes and their children.
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void emitLexicalBlockList(ArrayRef<LexicalBlock *> Blocks,
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const FunctionInfo& FI);
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/// Emit a lexical block scope and its children.
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void emitLexicalBlock(const LexicalBlock &Block, const FunctionInfo& FI);
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/// Translates the DIType to codeview if necessary and returns a type index
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/// for it.
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codeview::TypeIndex getTypeIndex(DITypeRef TypeRef,
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328
test/DebugInfo/COFF/lexicalblock.ll
Normal file
328
test/DebugInfo/COFF/lexicalblock.ll
Normal file
@ -0,0 +1,328 @@
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; RUN: llc < %s -filetype=obj | llvm-readobj - -codeview | FileCheck %s
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;
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; -- lexicablock.cxx begin ----------------------------------------------------
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; int main(int argc, char *argv[]) {
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; int localA = 1;
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;
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; { // S_BLOCK32 not emitted because it has multiple address ranges.
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; int localB = 2;
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;
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; if (__builtin_expect(argc != 1, 0)) { // S_BLOCK32 containing 'localC'
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; int localC = 3;
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; }
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; }
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;
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; { // S_BLOCK32 containing 'localD'
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; int localD = 4;
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; localA = localD;
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; }
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;
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; { // S_BLOCK32 not emitted
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; { // S_BLOCK32 containing 'localE'
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; int localE = 5;
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; localA = localE;
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; }
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; }
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;
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; { // S_BLOCK32 containing 'localF'
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; int localF = 6;
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; localA = localF;
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;
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; { // S_BLOCK32 containing 'localG'
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; int localG = 7;
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; localA = localG;
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; }
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; }
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;
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; if (localA == 7) { // S_BLOCK32 containing 'localH'
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; int localH = 8;
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; localA = localH;
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; }
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;
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; return localA != 8 ? -1 : 0;
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; }
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; -- lexicalblock.cxx end -----------------------------------------------------
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;
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; To regenerate the IR below:
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; $ clang -cc1 -triple i686-pc-windows -emit-llvm -o lexicalblock.tmp -debug-info-kind=limited -gcodeview lexicablock.cxx -O1 -disable-llvm-passes
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; $ opt -lower-expect -S -o lexicalblock.ll < lexicalblock.tmp
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;
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; The commands above split the lexical block containing localB and localC into
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; two parts, thus creating multiple ranges for the containing lexical block
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; without optimizing out the whole thing.
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;
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; CHECK: {{.*}}Proc{{.*}}Sym {
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; CHECK: DisplayName: main
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: argc
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: argv
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localA
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localB
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localC
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localD
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localE
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localF
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localG
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localH
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: ProcEnd {
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; CHECK: }
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;
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; ModuleID = 'lexicalblock.cxx'
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source_filename = "lexicalblock.cxx"
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i686-pc-windows-msvc"
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; Function Attrs: norecurse nounwind
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define i32 @main(i32 %argc, i8** %argv) #0 !dbg !8 {
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entry:
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%retval = alloca i32, align 4
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%argv.addr = alloca i8**, align 4
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%argc.addr = alloca i32, align 4
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%localA = alloca i32, align 4
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%localB = alloca i32, align 4
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%localC = alloca i32, align 4
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%localD = alloca i32, align 4
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%localE = alloca i32, align 4
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%localF = alloca i32, align 4
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%localG = alloca i32, align 4
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%localH = alloca i32, align 4
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store i32 0, i32* %retval, align 4
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store i8** %argv, i8*** %argv.addr, align 4, !tbaa !37
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call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !17, metadata !DIExpression()), !dbg !41
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store i32 %argc, i32* %argc.addr, align 4, !tbaa !42
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call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !18, metadata !DIExpression()), !dbg !41
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%0 = bitcast i32* %localA to i8*, !dbg !44
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #4, !dbg !44
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call void @llvm.dbg.declare(metadata i32* %localA, metadata !19, metadata !DIExpression()), !dbg !44
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store i32 1, i32* %localA, align 4, !dbg !44, !tbaa !42
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%1 = bitcast i32* %localB to i8*, !dbg !45
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %1) #4, !dbg !45
|
||||
call void @llvm.dbg.declare(metadata i32* %localB, metadata !20, metadata !DIExpression()), !dbg !45
|
||||
store i32 2, i32* %localB, align 4, !dbg !45, !tbaa !42
|
||||
%2 = load i32, i32* %argc.addr, align 4, !dbg !46, !tbaa !42
|
||||
%cmp = icmp ne i32 %2, 1, !dbg !46
|
||||
%conv = zext i1 %cmp to i32, !dbg !46
|
||||
%tobool = icmp ne i32 %conv, 0, !dbg !46
|
||||
br i1 %tobool, label %if.then, label %if.end, !dbg !46, !prof !47
|
||||
|
||||
if.then: ; preds = %entry
|
||||
%3 = bitcast i32* %localC to i8*, !dbg !48
|
||||
call void @llvm.lifetime.start.p0i8(i64 4, i8* %3) #4, !dbg !48
|
||||
call void @llvm.dbg.declare(metadata i32* %localC, metadata !22, metadata !DIExpression()), !dbg !48
|
||||
store i32 3, i32* %localC, align 4, !dbg !48, !tbaa !42
|
||||
%4 = bitcast i32* %localC to i8*, !dbg !49
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %4) #4, !dbg !49
|
||||
br label %if.end, !dbg !49
|
||||
|
||||
if.end: ; preds = %if.then, %entry
|
||||
%5 = bitcast i32* %localB to i8*, !dbg !50
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %5) #4, !dbg !50
|
||||
%6 = bitcast i32* %localD to i8*, !dbg !51
|
||||
call void @llvm.lifetime.start.p0i8(i64 4, i8* %6) #4, !dbg !51
|
||||
call void @llvm.dbg.declare(metadata i32* %localD, metadata !25, metadata !DIExpression()), !dbg !51
|
||||
store i32 4, i32* %localD, align 4, !dbg !51, !tbaa !42
|
||||
%7 = load i32, i32* %localD, align 4, !dbg !52, !tbaa !42
|
||||
store i32 %7, i32* %localA, align 4, !dbg !52, !tbaa !42
|
||||
%8 = bitcast i32* %localD to i8*, !dbg !53
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %8) #4, !dbg !53
|
||||
%9 = bitcast i32* %localE to i8*, !dbg !54
|
||||
call void @llvm.lifetime.start.p0i8(i64 4, i8* %9) #4, !dbg !54
|
||||
call void @llvm.dbg.declare(metadata i32* %localE, metadata !27, metadata !DIExpression()), !dbg !54
|
||||
store i32 5, i32* %localE, align 4, !dbg !54, !tbaa !42
|
||||
%10 = load i32, i32* %localE, align 4, !dbg !55, !tbaa !42
|
||||
store i32 %10, i32* %localA, align 4, !dbg !55, !tbaa !42
|
||||
%11 = bitcast i32* %localE to i8*, !dbg !56
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %11) #4, !dbg !56
|
||||
%12 = bitcast i32* %localF to i8*, !dbg !57
|
||||
call void @llvm.lifetime.start.p0i8(i64 4, i8* %12) #4, !dbg !57
|
||||
call void @llvm.dbg.declare(metadata i32* %localF, metadata !30, metadata !DIExpression()), !dbg !57
|
||||
store i32 6, i32* %localF, align 4, !dbg !57, !tbaa !42
|
||||
%13 = load i32, i32* %localF, align 4, !dbg !58, !tbaa !42
|
||||
store i32 %13, i32* %localA, align 4, !dbg !58, !tbaa !42
|
||||
%14 = bitcast i32* %localG to i8*, !dbg !59
|
||||
call void @llvm.lifetime.start.p0i8(i64 4, i8* %14) #4, !dbg !59
|
||||
call void @llvm.dbg.declare(metadata i32* %localG, metadata !32, metadata !DIExpression()), !dbg !59
|
||||
store i32 7, i32* %localG, align 4, !dbg !59, !tbaa !42
|
||||
%15 = load i32, i32* %localG, align 4, !dbg !60, !tbaa !42
|
||||
store i32 %15, i32* %localA, align 4, !dbg !60, !tbaa !42
|
||||
%16 = bitcast i32* %localG to i8*, !dbg !61
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %16) #4, !dbg !61
|
||||
%17 = bitcast i32* %localF to i8*, !dbg !62
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %17) #4, !dbg !62
|
||||
%18 = load i32, i32* %localA, align 4, !dbg !63, !tbaa !42
|
||||
%cmp1 = icmp eq i32 %18, 7, !dbg !63
|
||||
br i1 %cmp1, label %if.then2, label %if.end3, !dbg !63
|
||||
|
||||
if.then2: ; preds = %if.end
|
||||
%19 = bitcast i32* %localH to i8*, !dbg !64
|
||||
call void @llvm.lifetime.start.p0i8(i64 4, i8* %19) #4, !dbg !64
|
||||
call void @llvm.dbg.declare(metadata i32* %localH, metadata !34, metadata !DIExpression()), !dbg !64
|
||||
store i32 8, i32* %localH, align 4, !dbg !64, !tbaa !42
|
||||
%20 = load i32, i32* %localH, align 4, !dbg !65, !tbaa !42
|
||||
store i32 %20, i32* %localA, align 4, !dbg !65, !tbaa !42
|
||||
%21 = bitcast i32* %localH to i8*, !dbg !66
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %21) #4, !dbg !66
|
||||
br label %if.end3, !dbg !66
|
||||
|
||||
if.end3: ; preds = %if.then2, %if.end
|
||||
%22 = load i32, i32* %localA, align 4, !dbg !67, !tbaa !42
|
||||
%cmp4 = icmp ne i32 %22, 8, !dbg !67
|
||||
%23 = zext i1 %cmp4 to i64, !dbg !67
|
||||
%cond = select i1 %cmp4, i32 -1, i32 0, !dbg !67
|
||||
%24 = bitcast i32* %localA to i8*, !dbg !68
|
||||
call void @llvm.lifetime.end.p0i8(i64 4, i8* %24) #4, !dbg !68
|
||||
ret i32 %cond, !dbg !67
|
||||
}
|
||||
|
||||
; Function Attrs: nounwind readnone speculatable
|
||||
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
|
||||
|
||||
; Function Attrs: argmemonly nounwind
|
||||
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2
|
||||
|
||||
; Function Attrs: nounwind readnone
|
||||
declare i32 @llvm.expect.i32(i32, i32) #3
|
||||
|
||||
; Function Attrs: argmemonly nounwind
|
||||
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2
|
||||
|
||||
attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "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-features"="+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
||||
attributes #1 = { nounwind readnone speculatable }
|
||||
attributes #2 = { argmemonly nounwind }
|
||||
attributes #3 = { nounwind readnone }
|
||||
attributes #4 = { nounwind }
|
||||
|
||||
!llvm.dbg.cu = !{!0}
|
||||
!llvm.module.flags = !{!3, !4, !5, !6}
|
||||
!llvm.ident = !{!7}
|
||||
|
||||
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 (trunk)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
|
||||
!1 = !DIFile(filename: "<stdin>", directory: "C:/path/to/directory", checksumkind: CSK_MD5, checksum: "169b810b4f895de9a9e19d8d0634af5d")
|
||||
!2 = !{}
|
||||
!3 = !{i32 1, !"NumRegisterParameters", i32 0}
|
||||
!4 = !{i32 2, !"CodeView", i32 1}
|
||||
!5 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!6 = !{i32 1, !"wchar_size", i32 2}
|
||||
!7 = !{!"clang version 7.0.0 (trunk)"}
|
||||
!8 = distinct !DISubprogram(name: "main", scope: !9, file: !9, line: 1, type: !10, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !16)
|
||||
!9 = !DIFile(filename: "lexicalblock.cxx", directory: "C:/path/to/directory", checksumkind: CSK_MD5, checksum: "169b810b4f895de9a9e19d8d0634af5d")
|
||||
!10 = !DISubroutineType(types: !11)
|
||||
!11 = !{!12, !12, !13}
|
||||
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||
!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 32)
|
||||
!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 32)
|
||||
!15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
|
||||
!16 = !{!17, !18, !19, !20, !22, !25, !27, !30, !32, !34}
|
||||
!17 = !DILocalVariable(name: "argv", arg: 2, scope: !8, file: !9, line: 1, type: !13)
|
||||
!18 = !DILocalVariable(name: "argc", arg: 1, scope: !8, file: !9, line: 1, type: !12)
|
||||
!19 = !DILocalVariable(name: "localA", scope: !8, file: !9, line: 2, type: !12)
|
||||
!20 = !DILocalVariable(name: "localB", scope: !21, file: !9, line: 5, type: !12)
|
||||
!21 = distinct !DILexicalBlock(scope: !8, file: !9, line: 4)
|
||||
!22 = !DILocalVariable(name: "localC", scope: !23, file: !9, line: 8, type: !12)
|
||||
!23 = distinct !DILexicalBlock(scope: !24, file: !9, line: 7)
|
||||
!24 = distinct !DILexicalBlock(scope: !21, file: !9, line: 7)
|
||||
!25 = !DILocalVariable(name: "localD", scope: !26, file: !9, line: 13, type: !12)
|
||||
!26 = distinct !DILexicalBlock(scope: !8, file: !9, line: 12)
|
||||
!27 = !DILocalVariable(name: "localE", scope: !28, file: !9, line: 19, type: !12)
|
||||
!28 = distinct !DILexicalBlock(scope: !29, file: !9, line: 18)
|
||||
!29 = distinct !DILexicalBlock(scope: !8, file: !9, line: 17)
|
||||
!30 = !DILocalVariable(name: "localF", scope: !31, file: !9, line: 25, type: !12)
|
||||
!31 = distinct !DILexicalBlock(scope: !8, file: !9, line: 24)
|
||||
!32 = !DILocalVariable(name: "localG", scope: !33, file: !9, line: 29, type: !12)
|
||||
!33 = distinct !DILexicalBlock(scope: !31, file: !9, line: 28)
|
||||
!34 = !DILocalVariable(name: "localH", scope: !35, file: !9, line: 35, type: !12)
|
||||
!35 = distinct !DILexicalBlock(scope: !36, file: !9, line: 34)
|
||||
!36 = distinct !DILexicalBlock(scope: !8, file: !9, line: 34)
|
||||
!37 = !{!38, !38, i64 0}
|
||||
!38 = !{!"any pointer", !39, i64 0}
|
||||
!39 = !{!"omnipotent char", !40, i64 0}
|
||||
!40 = !{!"Simple C++ TBAA"}
|
||||
!41 = !DILocation(line: 1, scope: !8)
|
||||
!42 = !{!43, !43, i64 0}
|
||||
!43 = !{!"int", !39, i64 0}
|
||||
!44 = !DILocation(line: 2, scope: !8)
|
||||
!45 = !DILocation(line: 5, scope: !21)
|
||||
!46 = !DILocation(line: 7, scope: !21)
|
||||
!47 = !{!"branch_weights", i32 1, i32 2000}
|
||||
!48 = !DILocation(line: 8, scope: !23)
|
||||
!49 = !DILocation(line: 9, scope: !23)
|
||||
!50 = !DILocation(line: 10, scope: !21)
|
||||
!51 = !DILocation(line: 13, scope: !26)
|
||||
!52 = !DILocation(line: 14, scope: !26)
|
||||
!53 = !DILocation(line: 15, scope: !26)
|
||||
!54 = !DILocation(line: 19, scope: !28)
|
||||
!55 = !DILocation(line: 20, scope: !28)
|
||||
!56 = !DILocation(line: 21, scope: !28)
|
||||
!57 = !DILocation(line: 25, scope: !31)
|
||||
!58 = !DILocation(line: 26, scope: !31)
|
||||
!59 = !DILocation(line: 29, scope: !33)
|
||||
!60 = !DILocation(line: 30, scope: !33)
|
||||
!61 = !DILocation(line: 31, scope: !33)
|
||||
!62 = !DILocation(line: 32, scope: !31)
|
||||
!63 = !DILocation(line: 34, scope: !8)
|
||||
!64 = !DILocation(line: 35, scope: !35)
|
||||
!65 = !DILocation(line: 36, scope: !35)
|
||||
!66 = !DILocation(line: 37, scope: !35)
|
||||
!67 = !DILocation(line: 39, scope: !8)
|
||||
!68 = !DILocation(line: 40, scope: !8)
|
||||
@ -61,12 +61,12 @@
|
||||
; ASM: .cv_def_range .Lfunc_begin0 [[p_ecx_esi]], "A\021\022\000\000\000"
|
||||
; ASM: .cv_def_range [[p_ecx_esi]] [[func_end]], "A\021\027\000\000\000"
|
||||
; ASM: .short 4414 # Record kind: S_LOCAL
|
||||
; ASM: .asciz "a"
|
||||
; ASM: .cv_def_range [[after_getint]] [[after_inc_eax]], "A\021\021\000\000\000"
|
||||
; ASM: .short 4414 # Record kind: S_LOCAL
|
||||
; ASM: .asciz "c"
|
||||
; ASM: .cv_def_range [[after_getint]] [[after_je]], "A\021\021\000\000\000"
|
||||
; ASM: .short 4414 # Record kind: S_LOCAL
|
||||
; ASM: .asciz "a"
|
||||
; ASM: .cv_def_range [[after_getint]] [[after_inc_eax]], "A\021\021\000\000\000"
|
||||
; ASM: .short 4414 # Record kind: S_LOCAL
|
||||
; ASM: .asciz "b"
|
||||
; ASM: .cv_def_range [[after_inc_eax]] [[after_if]], "A\021\021\000\000\000"
|
||||
|
||||
@ -111,20 +111,6 @@
|
||||
; OBJ: Type: int (0x74)
|
||||
; OBJ: Flags [ (0x0)
|
||||
; OBJ: ]
|
||||
; OBJ: VarName: a
|
||||
; OBJ: }
|
||||
; OBJ: DefRangeRegisterSym {
|
||||
; OBJ: Register: EAX (0x11)
|
||||
; OBJ: LocalVariableAddrRange {
|
||||
; OBJ: OffsetStart: .text+0xC
|
||||
; OBJ: ISectStart: 0x0
|
||||
; OBJ: Range: 0x7
|
||||
; OBJ: }
|
||||
; OBJ: }
|
||||
; OBJ: LocalSym {
|
||||
; OBJ: Type: int (0x74)
|
||||
; OBJ: Flags [ (0x0)
|
||||
; OBJ: ]
|
||||
; OBJ: VarName: c
|
||||
; OBJ: }
|
||||
; OBJ: DefRangeRegisterSym {
|
||||
@ -139,6 +125,20 @@
|
||||
; OBJ: Type: int (0x74)
|
||||
; OBJ: Flags [ (0x0)
|
||||
; OBJ: ]
|
||||
; OBJ: VarName: a
|
||||
; OBJ: }
|
||||
; OBJ: DefRangeRegisterSym {
|
||||
; OBJ: Register: EAX (0x11)
|
||||
; OBJ: LocalVariableAddrRange {
|
||||
; OBJ: OffsetStart: .text+0xC
|
||||
; OBJ: ISectStart: 0x0
|
||||
; OBJ: Range: 0x7
|
||||
; OBJ: }
|
||||
; OBJ: }
|
||||
; OBJ: LocalSym {
|
||||
; OBJ: Type: int (0x74)
|
||||
; OBJ: Flags [ (0x0)
|
||||
; OBJ: ]
|
||||
; OBJ: VarName: b
|
||||
; OBJ: }
|
||||
; OBJ: DefRangeRegisterSym {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user