// If this function isn't doing Win64-style C++ EH, we don't need to do
// anything.
const Function *Fn = MF.getFunction();
- if (!STI.is64Bit() || !Fn->hasPersonalityFn() ||
- classifyEHPersonality(MF.getFunction()->getPersonalityFn()) !=
- EHPersonality::MSVC_CXX)
+ if (!STI.is64Bit() || !MF.getMMI().hasEHFunclets() ||
+ classifyEHPersonality(Fn->getPersonalityFn()) != EHPersonality::MSVC_CXX)
return;
// Win64 C++ EH needs to allocate the UnwindHelp object at some fixed offset
// relative to RSP after the prologue. Find the offset of the last fixed
- // object, so that we can allocate a slot immediately following it. Fixed
- // objects have negative frame indices.
+ // object, so that we can allocate a slot immediately following it. If there
+ // were no fixed objects, use offset -SlotSize, which is immediately after the
+ // return address. Fixed objects have negative frame indices.
MachineFrameInfo *MFI = MF.getFrameInfo();
- int64_t MinFixedObjOffset = 0;
+ int64_t MinFixedObjOffset = -SlotSize;
for (int I = MFI->getObjectIndexBegin(); I < 0; ++I)
MinFixedObjOffset = std::min(MinFixedObjOffset, MFI->getObjectOffset(I));