diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/LexicalScopes.cpp | 9 | ||||
| -rw-r--r-- | llvm/lib/IR/DebugInfo.cpp | 28 |
2 files changed, 35 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/LexicalScopes.cpp b/llvm/lib/CodeGen/LexicalScopes.cpp index 4600b2943c9..b621e3baee5 100644 --- a/llvm/lib/CodeGen/LexicalScopes.cpp +++ b/llvm/lib/CodeGen/LexicalScopes.cpp @@ -137,6 +137,8 @@ LexicalScope *LexicalScopes::findLexicalScope(DebugLoc DL) { /// getOrCreateLexicalScope - Find lexical scope for the given DebugLoc. If /// not available then create new lexical scope. LexicalScope *LexicalScopes::getOrCreateLexicalScope(DebugLoc DL) { + if (DL.isUnknown()) + return nullptr; MDNode *Scope = nullptr; MDNode *InlinedAt = nullptr; DL.getScopeAndInlinedAt(Scope, InlinedAt, MF->getFunction()->getContext()); @@ -172,9 +174,12 @@ LexicalScope *LexicalScopes::getOrCreateRegularScope(MDNode *Scope) { std::make_tuple(Parent, DIDescriptor(Scope), nullptr, false)).first; - if (!Parent && DIDescriptor(Scope).isSubprogram() && - DISubprogram(Scope).describes(MF->getFunction())) + if (!Parent) { + assert(DIDescriptor(Scope).isSubprogram()); + assert(DISubprogram(Scope).describes(MF->getFunction())); + assert(!CurrentFnLexicalScope); CurrentFnLexicalScope = &I->second; + } return &I->second; } diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp index b5c27933f16..4a52a9312fa 100644 --- a/llvm/lib/IR/DebugInfo.cpp +++ b/llvm/lib/IR/DebugInfo.cpp @@ -568,6 +568,34 @@ bool DISubprogram::Verify() const { if (isLValueReference() && isRValueReference()) return false; + // If a DISubprogram has an llvm::Function*, then scope chains from all + // instructions within the function should lead to this DISubprogram. + if (auto *F = getFunction()) { + LLVMContext &Ctxt = F->getContext(); + for (auto &BB : *F) { + for (auto &I : BB) { + DebugLoc DL = I.getDebugLoc(); + if (DL.isUnknown()) + continue; + + MDNode *Scope = nullptr; + MDNode *IA = nullptr; + // walk the inlined-at scopes + while (DL.getScopeAndInlinedAt(Scope, IA, F->getContext()), IA) + DL = DebugLoc::getFromDILocation(IA); + DL.getScopeAndInlinedAt(Scope, IA, Ctxt); + assert(!IA); + while (!DIDescriptor(Scope).isSubprogram()) { + DILexicalBlockFile D(Scope); + Scope = D.isLexicalBlockFile() + ? D.getScope() + : DebugLoc::getFromDILexicalBlock(Scope).getScope(Ctxt); + } + if (!DISubprogram(Scope).describes(F)) + return false; + } + } + } return DbgNode->getNumOperands() == 9 && getNumHeaderFields() == 12; } |
