45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
//===- Symbols.cpp --------------------------------------------------------===//
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//
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// The LLVM Linker
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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 "Symbols.h"
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#include "Chunks.h"
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#include "Error.h"
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#include "InputFiles.h"
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using namespace llvm::object;
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using namespace lld;
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using namespace lld::elf2;
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// Returns 1, 0 or -1 if this symbol should take precedence
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// over the Other, tie or lose, respectively.
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int SymbolBody::compare(SymbolBody *Other) {
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Kind LK = kind();
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Kind RK = Other->kind();
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// Normalize so that the smaller kind is on the left.
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if (LK > RK)
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return -Other->compare(this);
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// First handle comparisons between two different kinds.
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if (LK != RK)
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return 1;
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// Now handle the case where the kinds are the same.
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switch (LK) {
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case DefinedRegularKind:
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return 0;
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case DefinedWeakKind:
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case UndefinedKind:
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case UndefinedWeakKind:
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return 1;
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}
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llvm_unreachable("unknown symbol kind");
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}
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