#define DEBUG_TYPE "oprofile-jit-event-listener"
#include "llvm/Function.h"
#include "llvm/Metadata.h"
+#include "llvm/ADT/DenseMap.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/ExecutionEngine/JITEventListener.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ValueHandle.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Errno.h"
+#include "llvm/Support/Errno.h"
#include "llvm/Config/config.h"
#include <stddef.h>
using namespace llvm;
DenseMap<AssertingVH<MDNode>, std::string> Filenames;
public:
- const char *getFilename(DIScope Scope) {
- std::string &Filename = Filenames[Scope.getNode()];
+ const char *getFilename(MDNode *Scope) {
+ std::string &Filename = Filenames[Scope];
if (Filename.empty()) {
- Filename = Scope.getFilename();
+ Filename = DIScope(Scope).getFilename();
}
return Filename.c_str();
}
uintptr_t Address, DebugLoc Loc) {
debug_line_info Result;
Result.vma = Address;
- DILocation DILoc = MF.getDILocation(Loc);
- Result.lineno = DILoc.getLineNumber();
- Result.filename = Filenames.getFilename(DILoc.getScope());
+ Result.lineno = Loc.getLine();
+ Result.filename = Filenames.getFilename(
+ Loc.getScope(MF.getFunction()->getContext()));
DEBUG(dbgs() << "Mapping " << reinterpret_cast<void*>(Result.vma) << " to "
<< Result.filename << ":" << Result.lineno << "\n");
return Result;
if (op_write_native_code(Agent, F.getName().data(),
reinterpret_cast<uint64_t>(FnStart),
FnStart, FnSize) == -1) {
- DEBUG(dbgs() << "Failed to tell OProfile about native function "
- << F.getName() << " at ["
+ DEBUG(dbgs() << "Failed to tell OProfile about native function "
+ << F.getName() << " at ["
<< FnStart << "-" << ((char*)FnStart + FnSize) << "]\n");
return;
}
- // Now we convert the line number information from the address/DebugLoc format
- // in Details to the address/filename/lineno format that OProfile expects.
- // OProfile 0.9.4 (and maybe later versions) has a bug that causes it to
- // ignore line numbers for addresses above 4G.
- FilenameCache Filenames;
- std::vector<debug_line_info> LineInfo;
- LineInfo.reserve(1 + Details.LineStarts.size());
- if (!Details.MF->getDefaultDebugLoc().isUnknown()) {
- LineInfo.push_back(LineStartToOProfileFormat(
- *Details.MF, Filenames,
- reinterpret_cast<uintptr_t>(FnStart),
- Details.MF->getDefaultDebugLoc()));
- }
- for (std::vector<EmittedFunctionDetails::LineStart>::const_iterator
+ if (!Details.LineStarts.empty()) {
+ // Now we convert the line number information from the address/DebugLoc
+ // format in Details to the address/filename/lineno format that OProfile
+ // expects. Note that OProfile 0.9.4 has a bug that causes it to ignore
+ // line numbers for addresses above 4G.
+ FilenameCache Filenames;
+ std::vector<debug_line_info> LineInfo;
+ LineInfo.reserve(1 + Details.LineStarts.size());
+
+ DebugLoc FirstLoc = Details.LineStarts[0].Loc;
+ assert(!FirstLoc.isUnknown()
+ && "LineStarts should not contain unknown DebugLocs");
+ MDNode *FirstLocScope = FirstLoc.getScope(F.getContext());
+ DISubprogram FunctionDI = getDISubprogram(FirstLocScope);
+ if (FunctionDI.Verify()) {
+ // If we have debug info for the function itself, use that as the line
+ // number of the first several instructions. Otherwise, after filling
+ // LineInfo, we'll adjust the address of the first line number to point at
+ // the start of the function.
+ debug_line_info line_info;
+ line_info.vma = reinterpret_cast<uintptr_t>(FnStart);
+ line_info.lineno = FunctionDI.getLineNumber();
+ line_info.filename = Filenames.getFilename(FirstLocScope);
+ LineInfo.push_back(line_info);
+ }
+
+ for (std::vector<EmittedFunctionDetails::LineStart>::const_iterator
I = Details.LineStarts.begin(), E = Details.LineStarts.end();
- I != E; ++I) {
- LineInfo.push_back(LineStartToOProfileFormat(
- *Details.MF, Filenames, I->Address, I->Loc));
- }
- if (!LineInfo.empty()) {
+ I != E; ++I) {
+ LineInfo.push_back(LineStartToOProfileFormat(
+ *Details.MF, Filenames, I->Address, I->Loc));
+ }
+
+ // In case the function didn't have line info of its own, adjust the first
+ // line info's address to include the start of the function.
+ LineInfo[0].vma = reinterpret_cast<uintptr_t>(FnStart);
+
if (op_write_debug_line_info(Agent, FnStart,
LineInfo.size(), &*LineInfo.begin()) == -1) {
- DEBUG(dbgs()
+ DEBUG(dbgs()
<< "Failed to tell OProfile about line numbers for native function "
- << F.getName() << " at ["
+ << F.getName() << " at ["
<< FnStart << "-" << ((char*)FnStart + FnSize) << "]\n");
}
}