forked from OSchip/llvm-project
Make getDISubprogram(const Function *F) available in LLVM
Reviewed at http://reviews.llvm.org/D5950 llvm-svn: 220536
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@ -961,6 +961,11 @@ public:
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/// \brief Find subprogram that is enclosing this scope.
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DISubprogram getDISubprogram(const MDNode *Scope);
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/// \brief Find debug info for a given function.
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/// \returns a valid DISubprogram, if found. Otherwise, it returns an empty
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/// DISubprogram.
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DISubprogram getDISubprogram(const Function *F);
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/// \brief Find underlying composite type.
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DICompositeType getDICompositeType(DIType T);
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@ -912,6 +912,24 @@ DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
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return DISubprogram();
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}
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DISubprogram llvm::getDISubprogram(const Function *F) {
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// We look for the first instr that has a debug annotation leading back to F.
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const LLVMContext &Ctx = F->getParent()->getContext();
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for (auto &BB : *F) {
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for (auto &Inst : BB.getInstList()) {
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DebugLoc DLoc = Inst.getDebugLoc();
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if (DLoc.isUnknown())
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continue;
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const MDNode *Scope = DLoc.getScopeNode(Ctx);
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DISubprogram Subprogram = getDISubprogram(Scope);
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if (Subprogram.describes(F))
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return Subprogram;
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}
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}
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return DISubprogram();
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}
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DICompositeType llvm::getDICompositeType(DIType T) {
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if (T.isCompositeType())
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return DICompositeType(T);
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@ -627,29 +627,6 @@ void SampleProfileLoader::propagateWeights(Function &F) {
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}
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}
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/// \brief Locate the DISubprogram for F.
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///
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/// We look for the first instruction that has a debug annotation
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/// leading back to \p F.
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///
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/// \returns a valid DISubprogram, if found. Otherwise, it returns an empty
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/// DISubprogram.
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static const DISubprogram getDISubprogram(Function &F, const LLVMContext &Ctx) {
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for (auto &BI : F) {
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BasicBlock *BB = &BI;
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for (auto &Inst : BB->getInstList()) {
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DebugLoc DLoc = Inst.getDebugLoc();
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if (DLoc.isUnknown())
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continue;
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const MDNode *Scope = DLoc.getScopeNode(Ctx);
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DISubprogram Subprogram = getDISubprogram(Scope);
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return Subprogram.describes(&F) ? Subprogram : DISubprogram();
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}
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}
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return DISubprogram();
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}
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/// \brief Get the line number for the function header.
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///
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/// This looks up function \p F in the current compilation unit and
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@ -662,7 +639,7 @@ static const DISubprogram getDISubprogram(Function &F, const LLVMContext &Ctx) {
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/// \returns the line number where \p F is defined. If it returns 0,
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/// it means that there is no debug information available for \p F.
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unsigned SampleProfileLoader::getFunctionLoc(Function &F) {
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const DISubprogram &S = getDISubprogram(F, *Ctx);
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DISubprogram S = getDISubprogram(&F);
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if (S.isSubprogram())
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return S.getLineNumber();
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