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https://github.com/c64scene-ar/llvm-6502.git
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e17e7a2400
As pr19627 points out, every use of AliasedSymbol is likely a bug. The main use was to avoid the oddity of a variable showing up as undefined. That was fixed in r233995, which made these calls nops. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234169 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.isUndefined() || SB.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().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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