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Make getDISubprogram(const Function *F) available in LLVM

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Reviewed at http://reviews.llvm.org/D5950

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220536 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Timur Iskhodzhanov
2014-10-23 23:46:28 +00:00
parent 17c1e34c12
commit da45b2bdbd
3 changed files with 24 additions and 24 deletions
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5
include/llvm/IR/DebugInfo.h
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@@ -961,6 +961,11 @@ public:
/// \brief Find subprogram that is enclosing this scope. /// \brief Find subprogram that is enclosing this scope.
DISubprogram getDISubprogram(const MDNode *Scope); DISubprogram getDISubprogram(const MDNode *Scope);
/// \brief Find debug info for a given function.
/// \returns a valid DISubprogram, if found. Otherwise, it returns an empty
/// DISubprogram.
DISubprogram getDISubprogram(const Function *F);
/// \brief Find underlying composite type. /// \brief Find underlying composite type.
DICompositeType getDICompositeType(DIType T); DICompositeType getDICompositeType(DIType T);

18
lib/IR/DebugInfo.cpp
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@@ -912,6 +912,24 @@ DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
return DISubprogram(); return DISubprogram();
} }
DISubprogram llvm::getDISubprogram(const Function *F) {
// We look for the first instr that has a debug annotation leading back to F.
const LLVMContext &Ctx = F->getParent()->getContext();
for (auto &BB : *F) {
for (auto &Inst : BB.getInstList()) {
DebugLoc DLoc = Inst.getDebugLoc();
if (DLoc.isUnknown())
continue;
const MDNode *Scope = DLoc.getScopeNode(Ctx);
DISubprogram Subprogram = getDISubprogram(Scope);
if (Subprogram.describes(F))
return Subprogram;
}
}
return DISubprogram();
}
DICompositeType llvm::getDICompositeType(DIType T) { DICompositeType llvm::getDICompositeType(DIType T) {
if (T.isCompositeType()) if (T.isCompositeType())
return DICompositeType(T); return DICompositeType(T);

25
lib/Transforms/Scalar/SampleProfile.cpp
View File

@@ -627,29 +627,6 @@ void SampleProfileLoader::propagateWeights(Function &F) {
} }
} }
/// \brief Locate the DISubprogram for F.
///
/// We look for the first instruction that has a debug annotation
/// leading back to \p F.
///
/// \returns a valid DISubprogram, if found. Otherwise, it returns an empty
/// DISubprogram.
static const DISubprogram getDISubprogram(Function &F, const LLVMContext &Ctx) {
for (auto &BI : F) {
BasicBlock *BB = &BI;
for (auto &Inst : BB->getInstList()) {
DebugLoc DLoc = Inst.getDebugLoc();
if (DLoc.isUnknown())
continue;
const MDNode *Scope = DLoc.getScopeNode(Ctx);
DISubprogram Subprogram = getDISubprogram(Scope);
return Subprogram.describes(&F) ? Subprogram : DISubprogram();
}
}
return DISubprogram();
}
/// \brief Get the line number for the function header. /// \brief Get the line number for the function header.
/// ///
/// This looks up function \p F in the current compilation unit and /// This looks up function \p F in the current compilation unit and
@@ -662,7 +639,7 @@ static const DISubprogram getDISubprogram(Function &F, const LLVMContext &Ctx) {
/// \returns the line number where \p F is defined. If it returns 0, /// \returns the line number where \p F is defined. If it returns 0,
/// it means that there is no debug information available for \p F. /// it means that there is no debug information available for \p F.
unsigned SampleProfileLoader::getFunctionLoc(Function &F) { unsigned SampleProfileLoader::getFunctionLoc(Function &F) {
const DISubprogram &S = getDISubprogram(F, *Ctx); DISubprogram S = getDISubprogram(&F);
if (S.isSubprogram()) if (S.isSubprogram())
return S.getLineNumber(); return S.getLineNumber();