+
+bool
+MCObjectWriter::IsSymbolRefDifferenceFullyResolved(const MCAssembler &Asm,
+ const MCSymbolRefExpr *A,
+ const MCSymbolRefExpr *B,
+ bool InSet) const {
+ // Modified symbol references cannot be resolved.
+ if (A->getKind() != MCSymbolRefExpr::VK_None ||
+ B->getKind() != MCSymbolRefExpr::VK_None)
+ return false;
+
+ const MCSymbol &SA = A->getSymbol();
+ const MCSymbol &SB = B->getSymbol();
+ if (SA.AliasedSymbol().isUndefined() || SB.AliasedSymbol().isUndefined())
+ return false;
+
+ const MCSymbolData &DataA = Asm.getSymbolData(SA);
+ const MCSymbolData &DataB = Asm.getSymbolData(SB);
+
+ return IsSymbolRefDifferenceFullyResolvedImpl(Asm, DataA,
+ *DataB.getFragment(),
+ InSet,
+ false);
+}
+
+bool
+MCObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
+ const MCSymbolData &DataA,
+ const MCFragment &FB,
+ bool InSet,
+ bool IsPCRel) const {
+ const MCSection &SecA = DataA.getSymbol().AliasedSymbol().getSection();
+ const MCSection &SecB = FB.getParent()->getSection();
+ // On ELF and COFF A - B is absolute if A and B are in the same section.
+ return &SecA == &SecB;
+}