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9428f184be
Before when deciding if we needed a relocation in A-B, we wore only checking if A was weak. This fixes the asymmetry. The "InSet" argument should probably be renamed to "ForValue", since InSet is very MachO specific, but doing so in this patch would make it hard to read. This fixes PR22815. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234165 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
//===- lib/MC/MCObjectWriter.cpp - MCObjectWriter implementation ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCObjectWriter.h"
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#include "llvm/MC/MCSymbol.h"
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using namespace llvm;
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MCObjectWriter::~MCObjectWriter() {
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}
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bool MCObjectWriter::IsSymbolRefDifferenceFullyResolved(
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const MCAssembler &Asm, const MCSymbolRefExpr *A, const MCSymbolRefExpr *B,
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bool InSet) const {
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// Modified symbol references cannot be resolved.
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if (A->getKind() != MCSymbolRefExpr::VK_None ||
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B->getKind() != MCSymbolRefExpr::VK_None)
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return false;
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const MCSymbol &SA = A->getSymbol();
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const MCSymbol &SB = B->getSymbol();
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if (SA.AliasedSymbol().isUndefined() || SB.AliasedSymbol().isUndefined())
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return false;
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const MCSymbolData &DataA = Asm.getSymbolData(SA);
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const MCSymbolData &DataB = Asm.getSymbolData(SB);
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if(!DataA.getFragment() || !DataB.getFragment())
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return false;
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return IsSymbolRefDifferenceFullyResolvedImpl(
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Asm, DataA, &DataB, *DataB.getFragment(), InSet, false);
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}
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bool MCObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(
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const MCAssembler &Asm, const MCSymbolData &DataA,
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const MCSymbolData *DataB, const MCFragment &FB, bool InSet,
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bool IsPCRel) const {
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const MCSection &SecA = DataA.getSymbol().AliasedSymbol().getSection();
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const MCSection &SecB = FB.getParent()->getSection();
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// On ELF and COFF A - B is absolute if A and B are in the same section.
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return &SecA == &SecB;
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}
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bool MCObjectWriter::isWeak(const MCSymbolData &SD) const { return false; }
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