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7521964d28
This starts merging MCSection and MCSectionData. There are a few issues with the current split between MCSection and MCSectionData. * It optimizes the the not as important case. We want the production of .o files to be really fast, but the split puts the information used for .o emission in a separate data structure. * The ELF/COFF/MachO hierarchy is not represented in MCSectionData, leading to some ad-hoc ways to represent the various flags. * It makes it harder to remember where each item is. The attached patch starts merging the two by moving the alignment from MCSectionData to MCSection. Most of the patch is actually just dropping 'const', since MCSectionData is mutable, but MCSection was not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237936 91177308-0d34-0410-b5e6-96231b3b80d8
50 lines
1.4 KiB
C++
50 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, MCSection *StrSection,
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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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