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e260499363
And since it /looked/ like the DwarfStrSectionSym was unused, I tried removing it - but then it turned out that DwarfStringPool was reconstructing the same label (and expecting it to have already been emitted) and uses that. So I kept it around, but wanted to pass it in to users - since it seemed a bit silly for DwarfStringPool to have it passed in and returned but itself have no use for it. The only two users don't handle strings in both .dwo and .o files so they only ever need the one symbol - no need to keep it (and have an unused symbol) in the DwarfStringPool used for fission/.dwo. Refactor a bunch of accelerator table usage to remove duplication so I didn't have to touch 4-5 callers. llvm-svn: 217628
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
//===-- llvm/CodeGen/DwarfStringPool.h - Dwarf Debug Framework -*- C++ -*--===//
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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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#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
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#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
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#include "llvm/ADT/StringMap.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/Support/Allocator.h"
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#include <utility>
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namespace llvm {
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class MCSymbol;
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class MCSection;
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class StringRef;
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// Collection of strings for this unit and assorted symbols.
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// A String->Symbol mapping of strings used by indirect
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// references.
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class DwarfStringPool {
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StringMap<std::pair<MCSymbol *, unsigned>, BumpPtrAllocator &> Pool;
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StringRef Prefix;
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public:
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DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix)
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: Pool(A), Prefix(Prefix) {}
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void emit(AsmPrinter &Asm, const MCSection *StrSection,
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const MCSection *OffsetSection = nullptr);
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/// \brief Returns an entry into the string pool with the given
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/// string text.
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MCSymbol *getSymbol(AsmPrinter &Asm, StringRef Str);
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/// \brief Returns the index into the string pool with the given
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/// string text.
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unsigned getIndex(AsmPrinter &Asm, StringRef Str);
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bool empty() const { return Pool.empty(); }
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};
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}
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#endif
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