/// updateInlinedAtInfo - Helper function used by fixupLineNumbers to
/// recursively update InlinedAtEntry of a DebugLoc.
static DebugLoc updateInlinedAtInfo(const DebugLoc &DL,
const DebugLoc &InlinedAtDL,
LLVMContext &Ctx) {
if (MDNode *IA = DL.getInlinedAt(Ctx)) {
DebugLoc NewInlinedAtDL
= updateInlinedAtInfo(DebugLoc::getFromDILocation(IA), InlinedAtDL, Ctx);
return DebugLoc::get(DL.getLine(), DL.getCol(), DL.getScope(Ctx),
NewInlinedAtDL.getAsMDNode(Ctx));
}
return DebugLoc::get(DL.getLine(), DL.getCol(), DL.getScope(Ctx),
InlinedAtDL.getAsMDNode(Ctx));
}
//changed scope was *
LLVMValueRef LLVMGetDebugLoc(unsigned Line, unsigned Col, LLVMValueRef Scope)
{
// MDNode *S = unwrapDI<DIDescriptor>(*Scope);
// DebugLoc loc = DebugLoc::get(Line,Col,S);
DIScope S = unwrapDI<DIScope>(Scope);
DebugLoc loc = DebugLoc::get(Line,Col,S);
LLVMContext &ctx = S->getContext();
MDNode *L = loc.getAsMDNode(ctx);
return wrap(L);
}
/// \brief Get the weight for an instruction.
///
/// The "weight" of an instruction \p Inst is the number of samples
/// collected on that instruction at runtime. To retrieve it, we
/// need to compute the line number of \p Inst relative to the start of its
/// function. We use HeaderLineno to compute the offset. We then
/// look up the samples collected for \p Inst using BodySamples.
///
/// \param Inst Instruction to query.
///
/// \returns The profiled weight of I.
unsigned SampleProfileLoader::getInstWeight(Instruction &Inst) {
DebugLoc DLoc = Inst.getDebugLoc();
unsigned Lineno = DLoc.getLine();
if (Lineno < HeaderLineno)
return 0;
DILocation DIL(DLoc.getAsMDNode(*Ctx));
int LOffset = Lineno - HeaderLineno;
unsigned Discriminator = DIL.getDiscriminator();
unsigned Weight = Samples->samplesAt(LOffset, Discriminator);
DEBUG(dbgs() << " " << Lineno << "." << Discriminator << ":" << Inst
<< " (line offset: " << LOffset << "." << Discriminator
<< " - weight: " << Weight << ")\n");
return Weight;
}
