explicit ELFTargetAsmInfo(const TargetMachine &TM);
virtual const Section* SelectSectionForGlobal(const GlobalValue *GV) const;
- virtual std::string PrintSectionFlags(unsigned flags) const;
+ virtual std::string printSectionFlags(unsigned flags) const;
const Section* MergeableConstSection(const GlobalVariable *GV) const;
inline const Section* MergeableConstSection(const Type *Ty) const;
const Section* MergeableStringSection(const GlobalVariable *GV) const;
#ifndef LLVM_TARGET_ASM_INFO_H
#define LLVM_TARGET_ASM_INFO_H
+#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/DataTypes.h"
#include <string>
static inline unsigned setEntitySize(unsigned Flags, unsigned Size) {
return ((Flags & ~EntitySize) | ((Size & 0xFF) << 24));
}
+
+ struct KeyInfo {
+ static inline unsigned getEmptyKey() { return Invalid; }
+ static inline unsigned getTombstoneKey() { return Invalid - 1; }
+ static unsigned getHashValue(const unsigned &Key) { return Key; }
+ static bool isEqual(unsigned LHS, unsigned RHS) { return LHS == RHS; }
+ static bool isPod() { return true; }
+ };
+
+ typedef DenseMap<unsigned, std::string, KeyInfo> FlagsStringsMapType;
}
class TargetMachine;
class TargetAsmInfo {
private:
mutable StringMap<Section> Sections;
+ mutable SectionFlags::FlagsStringsMapType FlagsStrings;
protected:
//===------------------------------------------------------------------===//
// Properties to be set by the target writer, used to configure asm printer.
virtual std::string UniqueSectionForGlobal(const GlobalValue* GV,
SectionKind::Kind kind) const;
- virtual std::string PrintSectionFlags(unsigned flags) const { return ""; }
+ const std::string& getSectionFlags(unsigned Flags) const;
+ virtual std::string printSectionFlags(unsigned flags) const { return ""; }
virtual const Section* SelectSectionForGlobal(const GlobalValue *GV) const;
return getReadOnlySection_();
}
-std::string ELFTargetAsmInfo::PrintSectionFlags(unsigned flags) const {
+std::string ELFTargetAsmInfo::printSectionFlags(unsigned flags) const {
std::string Flags = ",\"";
if (!(flags & SectionFlags::Debug))
CStringSection=".rodata.str";
}
-std::string SparcELFTargetAsmInfo::PrintSectionFlags(unsigned flags) const {
+std::string SparcELFTargetAsmInfo::printSectionFlags(unsigned flags) const {
if (flags & SectionFlags::Mergeable)
- return ELFTargetAsmInfo::PrintSectionFlags(flags);
+ return ELFTargetAsmInfo::printSectionFlags(flags);
std::string Flags;
if (!(flags & SectionFlags::Debug))
struct SparcELFTargetAsmInfo : public ELFTargetAsmInfo {
explicit SparcELFTargetAsmInfo(const TargetMachine &TM);
- std::string PrintSectionFlags(unsigned flags) const;
+ std::string printSectionFlags(unsigned flags) const;
};
} // namespace llvm
// If section is named we need to switch into it via special '.section'
// directive and also append funky flags. Otherwise - section name is just
// some magic assembler directive.
- return getSwitchToSectionDirective() + S->Name + PrintSectionFlags(S->Flags);
+ return getSwitchToSectionDirective() + S->Name + getSectionFlags(S->Flags);
}
// Lame default implementation. Calculate the section name for global.
return &S;
}
+
+const std::string&
+TargetAsmInfo::getSectionFlags(unsigned Flags) const {
+ SectionFlags::FlagsStringsMapType::iterator I = FlagsStrings.find(Flags);
+
+ // We didn't print these flags yet, print and save them to map. This reduces
+ // amount of heap trashing due to std::string construction / concatenation.
+ if (I == FlagsStrings.end())
+ I = FlagsStrings.insert(std::make_pair(Flags,
+ printSectionFlags(Flags))).first;
+
+ return I->second;
+}
}
}
-std::string X86COFFTargetAsmInfo::PrintSectionFlags(unsigned flags) const {
+std::string X86COFFTargetAsmInfo::printSectionFlags(unsigned flags) const {
std::string Flags = ",\"";
if (flags & SectionFlags::Code)
bool Global) const;
virtual std::string UniqueSectionForGlobal(const GlobalValue* GV,
SectionKind::Kind kind) const;
- virtual std::string PrintSectionFlags(unsigned flags) const;
+ virtual std::string printSectionFlags(unsigned flags) const;
protected:
const X86TargetMachine *X86TM;
};