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Select section for constant pool entries

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54448 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2008-08-07 09:50:34 +00:00
parent d829e6fdee
commit 93cacf131d
4 changed files with 30 additions and 3 deletions
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4
include/llvm/Target/ELFTargetAsmInfo.h
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@ -21,6 +21,7 @@
namespace llvm {
class GlobalValue;
class GlobalVariable;
class Type;
struct ELFTargetAsmInfo: public virtual TargetAsmInfo {
explicit ELFTargetAsmInfo(const TargetMachine &TM);
@ -28,7 +29,10 @@ namespace llvm {
virtual const Section* SelectSectionForGlobal(const GlobalValue *GV) 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;
virtual const Section*
SelectSectionForMachineConst(const Type *Ty) const;
protected:
const TargetMachine* ETM;
};

3
include/llvm/Target/TargetAsmInfo.h
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@ -76,6 +76,7 @@ namespace llvm {
class TargetMachine;
class CallInst;
class GlobalValue;
class Type;
class Section {
friend class TargetAsmInfo;
@ -542,6 +543,8 @@ namespace llvm {
virtual const Section* SelectSectionForGlobal(const GlobalValue *GV) const;
virtual const Section* SelectSectionForMachineConst(const Type *Ty) const;
// Accessors.
//
const char *getTextSection() const {

19
lib/Target/ELFTargetAsmInfo.cpp
View File

@ -17,6 +17,7 @@
#include "llvm/Function.h"
#include "llvm/GlobalVariable.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/Target/ELFTargetAsmInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetData.h"
@ -89,16 +90,28 @@ ELFTargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV) const {
assert(0 && "Unsupported global");
}
const Section*
ELFTargetAsmInfo::SelectSectionForMachineConst(const Type *Ty) const {
// FIXME: Support data.rel stuff someday
return MergeableConstSection(Ty);
}
const Section*
ELFTargetAsmInfo::MergeableConstSection(const GlobalVariable *GV) const {
const TargetData *TD = ETM->getTargetData();
Constant *C = cast<GlobalVariable>(GV)->getInitializer();
const Type *Type = C->getType();
const Type *Ty = C->getType();
return MergeableConstSection(Ty);
}
inline const Section*
ELFTargetAsmInfo::MergeableConstSection(const Type *Ty) const {
const TargetData *TD = ETM->getTargetData();
// FIXME: string here is temporary, until stuff will fully land in.
// We cannot use {Four,Eight,Sixteen}ByteConstantSection here, since it's
// currently directly used by asmprinter.
unsigned Size = TD->getABITypeSize(Type);
unsigned Size = TD->getABITypeSize(Ty);
if (Size == 4 || Size == 8 || Size == 16) {
std::string Name = ".rodata.cst" + utostr(Size);

7
lib/Target/TargetAsmInfo.cpp
View File

@ -321,6 +321,13 @@ TargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV) const {
return getDataSection_();
}
// Lame default implementation. Calculate the section name for machine const.
const Section*
TargetAsmInfo::SelectSectionForMachineConst(const Type *Ty) const {
// FIXME: Support data.rel stuff someday
return getDataSection_();
}
std::string
TargetAsmInfo::UniqueSectionForGlobal(const GlobalValue* GV,
SectionKind::Kind Kind) const {