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Make the StringMaps attached to MCContext use the MCContext's allocator;

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reduces the number of calls to malloc().



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129687 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2011-04-18 05:02:31 +00:00
parent 8aa0f9042d
commit f4387d9afb
2 changed files with 11 additions and 9 deletions
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16
include/llvm/MC/MCContext.h
View File

@ -45,12 +45,18 @@ namespace llvm {
const TargetAsmInfo *TAI;
/// Allocator - Allocator object used for creating machine code objects.
///
/// We use a bump pointer allocator to avoid the need to track all allocated
/// objects.
BumpPtrAllocator Allocator;
/// Symbols - Bindings of names to symbols.
StringMap<MCSymbol*> Symbols;
StringMap<MCSymbol*, BumpPtrAllocator&> Symbols;
/// UsedNames - Keeps tracks of names that were used both for used declared
/// and artificial symbols.
StringMap<bool> UsedNames;
StringMap<bool, BumpPtrAllocator&> UsedNames;
/// NextUniqueID - The next ID to dole out to an unnamed assembler temporary
/// symbol.
@ -96,12 +102,6 @@ namespace llvm {
/// the elements were added.
std::vector<const MCSection *> MCLineSectionOrder;
/// Allocator - Allocator object used for creating machine code objects.
///
/// We use a bump pointer allocator to avoid the need to track all allocated
/// objects.
BumpPtrAllocator Allocator;
void *MachOUniquingMap, *ELFUniquingMap, *COFFUniquingMap;
MCSymbol *CreateSymbol(StringRef Name);

4
lib/MC/MCContext.cpp
View File

@ -27,7 +27,9 @@ typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy;
MCContext::MCContext(const MCAsmInfo &mai, const TargetAsmInfo *tai) :
MAI(mai), TAI(tai), NextUniqueID(0),
MAI(mai), TAI(tai),
Allocator(), Symbols(Allocator), UsedNames(Allocator),
NextUniqueID(0),
CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0),
AllowTemporaryLabels(true) {
MachOUniquingMap = 0;