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switch off of 'Section' onto MCSection. We're not properly using

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MCSection subclasses yet, but this is a step in the right direction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77708 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-07-31 18:48:30 +00:00
parent 5e5337a833
commit a87dea4f8c
21 changed files with 189 additions and 182 deletions
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47
lib/Target/TargetLoweringObjectFile.cpp
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@@ -16,10 +16,12 @@
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/GlobalVariable.h"
#include "llvm/Support/Mangler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSection.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Mangler.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
@@ -27,7 +29,7 @@ using namespace llvm;
// Generic Code
//===----------------------------------------------------------------------===//
TargetLoweringObjectFile::TargetLoweringObjectFile() {
TargetLoweringObjectFile::TargetLoweringObjectFile() : Ctx(0) {
TextSection = 0;
DataSection = 0;
BSSSection_ = 0;
@@ -176,7 +178,7 @@ static SectionKind::Kind SectionKindForGlobal(const GlobalValue *GV,
/// SectionForGlobal - This method computes the appropriate section to emit
/// the specified global variable or function definition. This should not
/// be passed external (or available externally) globals.
const Section *TargetLoweringObjectFile::
const MCSection *TargetLoweringObjectFile::
SectionForGlobal(const GlobalValue *GV, Mangler *Mang,
const TargetMachine &TM) const {
assert(!GV->isDeclaration() && !GV->hasAvailableExternallyLinkage() &&
@@ -192,7 +194,7 @@ SectionForGlobal(const GlobalValue *GV, Mangler *Mang,
if (GV->hasSection()) {
// If the target has special section hacks for specifically named globals,
// return them now.
if (const Section *TS = getSpecialCasedSectionGlobals(GV, Mang, Kind))
if (const MCSection *TS = getSpecialCasedSectionGlobals(GV, Mang, Kind))
return TS;
// If the target has magic semantics for certain section names, make sure to
@@ -209,7 +211,7 @@ SectionForGlobal(const GlobalValue *GV, Mangler *Mang,
}
// Lame default implementation. Calculate the section name for global.
const Section*
const MCSection *
TargetLoweringObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
SectionKind Kind,
Mangler *Mang,
@@ -231,7 +233,7 @@ TargetLoweringObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
/// getSectionForMergableConstant - Given a mergable constant with the
/// specified size and relocation information, return a section that it
/// should be placed in.
const Section *
const MCSection *
TargetLoweringObjectFile::
getSectionForMergeableConstant(SectionKind Kind) const {
if (Kind.isReadOnly() && ReadOnlySection != 0)
@@ -241,18 +243,13 @@ getSectionForMergeableConstant(SectionKind Kind) const {
}
const Section *TargetLoweringObjectFile::
const MCSection *TargetLoweringObjectFile::
getOrCreateSection(const char *Name, bool isDirective,
SectionKind::Kind Kind) const {
Section &S = Sections[Name];
// This is newly-created section, set it up properly.
if (S.Name.empty()) {
S.Kind = SectionKind::get(Kind, false /*weak*/, !isDirective);
S.Name = Name;
}
return &S;
if (MCSection *S = Ctx->GetSection(Name))
return S;
SectionKind K = SectionKind::get(Kind, false /*weak*/, !isDirective);
return MCSectionWithKind::Create(Name, K, *Ctx);
}
@@ -263,6 +260,7 @@ getOrCreateSection(const char *Name, bool isDirective,
void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
if (!HasCrazyBSS)
BSSSection_ = getOrCreateSection("\t.bss", true, SectionKind::BSS);
else
@@ -401,7 +399,7 @@ static const char *getSectionPrefixForUniqueGlobal(SectionKind Kind) {
return ".gnu.linkonce.d.rel.ro.";
}
const Section *TargetLoweringObjectFileELF::
const MCSection *TargetLoweringObjectFileELF::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
@@ -458,7 +456,7 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
/// getSectionForMergeableConstant - Given a mergeable constant with the
/// specified size and relocation information, return a section that it
/// should be placed in.
const Section *TargetLoweringObjectFileELF::
const MCSection *TargetLoweringObjectFileELF::
getSectionForMergeableConstant(SectionKind Kind) const {
if (Kind.isMergeableConst4())
return MergeableConst4Section;
@@ -480,6 +478,7 @@ getSectionForMergeableConstant(SectionKind Kind) const {
void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
TextSection = getOrCreateSection("\t.text", true, SectionKind::Text);
DataSection = getOrCreateSection("\t.data", true, SectionKind::DataRel);
@@ -514,7 +513,7 @@ void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
false, SectionKind::DataRel);
}
const Section *TargetLoweringObjectFileMachO::
const MCSection *TargetLoweringObjectFileMachO::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
assert(!Kind.isThreadLocal() && "Darwin doesn't support TLS");
@@ -569,7 +568,7 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
return DataSection;
}
const Section *
const MCSection *
TargetLoweringObjectFileMachO::
getSectionForMergeableConstant(SectionKind Kind) const {
// If this constant requires a relocation, we have to put it in the data
@@ -592,6 +591,7 @@ getSectionForMergeableConstant(SectionKind Kind) const {
void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
TextSection = getOrCreateSection("\t.text", true, SectionKind::Text);
DataSection = getOrCreateSection("\t.data", true, SectionKind::DataRel);
}
@@ -618,7 +618,7 @@ static const char *getCOFFSectionPrefixForUniqueGlobal(SectionKind Kind) {
}
const Section *TargetLoweringObjectFileCOFF::
const MCSection *TargetLoweringObjectFileCOFF::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
assert(!Kind.isThreadLocal() && "Doesn't support TLS");
@@ -635,9 +635,8 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
if (Kind.isText())
return getTextSection();
if (Kind.isBSS())
if (const Section *S = BSSSection_)
return S;
if (Kind.isBSS() && BSSSection_ != 0)
return BSSSection_;
if (Kind.isReadOnly() && ReadOnlySection != 0)
return ReadOnlySection;