const MachineFrameInfo &MFI = DAG.getMachineFunction().getFrameInfo();
- // Match non-equal FrameIndexes - If both frame indices are fixed
- // we know their relative offsets and can compare them. Otherwise
- // we must be conservative.
+ // Match FrameIndexes.
if (auto *A = dyn_cast<FrameIndexSDNode>(Base))
- if (auto *B = dyn_cast<FrameIndexSDNode>(Other.Base))
+ if (auto *B = dyn_cast<FrameIndexSDNode>(Other.Base)) {
+ // Equal FrameIndexes - offsets are directly comparable.
+ if (A->getIndex() == B->getIndex())
+ return true;
+ // Non-equal FrameIndexes - If both frame indices are fixed
+ // we know their relative offsets and can compare them. Otherwise
+ // we must be conservative.
if (MFI.isFixedObjectIndex(A->getIndex()) &&
MFI.isFixedObjectIndex(B->getIndex())) {
Off += MFI.getObjectOffset(B->getIndex()) -
MFI.getObjectOffset(A->getIndex());
return true;
}
+ }
}
return false;
}
}
#endif
-