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author | Pedro Artigas <partigas@apple.com> | 2012-12-06 22:12:44 +0000 |
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committer | Pedro Artigas <partigas@apple.com> | 2012-12-06 22:12:44 +0000 |
commit | 873a1dd7d679ac9a9a92a93a4d2bbb157878efb4 (patch) | |
tree | 721b9de1e14f39167f2a0793a82f18a783d79463 | |
parent | 5b4af8b52af2cb9e15c89a0e01686f2ed9127d86 (diff) | |
download | external_llvm-873a1dd7d679ac9a9a92a93a4d2bbb157878efb4.zip external_llvm-873a1dd7d679ac9a9a92a93a4d2bbb157878efb4.tar.gz external_llvm-873a1dd7d679ac9a9a92a93a4d2bbb157878efb4.tar.bz2 |
fixed valgrind issues of prior commit, this change applies r169456 changes back to the tree with fixes. on darwin no valgrind issues exist in the tests that used to fail.
original change description:
change MCContext to work on the doInitialization/doFinalization model
reviewed by Evan Cheng <evan.cheng@apple.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169553 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | include/llvm/MC/MCContext.h | 18 | ||||
-rw-r--r-- | lib/CodeGen/MachineModuleInfo.cpp | 7 | ||||
-rw-r--r-- | lib/MC/MCContext.cpp | 50 |
3 files changed, 65 insertions, 10 deletions
diff --git a/include/llvm/MC/MCContext.h b/include/llvm/MC/MCContext.h index 78870d9..111ad48 100644 --- a/include/llvm/MC/MCContext.h +++ b/include/llvm/MC/MCContext.h @@ -137,11 +137,16 @@ namespace llvm { void *MachOUniquingMap, *ELFUniquingMap, *COFFUniquingMap; + /// Do automatic initialization in constructor and finalization in + /// destructor + bool AutoInitializationFinalization; + MCSymbol *CreateSymbol(StringRef Name); public: explicit MCContext(const MCAsmInfo &MAI, const MCRegisterInfo &MRI, - const MCObjectFileInfo *MOFI, const SourceMgr *Mgr = 0); + const MCObjectFileInfo *MOFI, const SourceMgr *Mgr = 0, + bool AutoInitializationFinalization = true); ~MCContext(); const SourceMgr *getSourceManager() const { return SrcMgr; } @@ -154,6 +159,17 @@ namespace llvm { void setAllowTemporaryLabels(bool Value) { AllowTemporaryLabels = Value; } + /// @name Module Lifetime Management + /// @{ + + /// doInitialization - prepare to process a new module + void doInitialization(); + + /// doFinalization - clean up state from the current module + void doFinalization(); + + /// @} + /// @name Symbol Management /// @{ diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp index 4fbbb05..ad88c51 100644 --- a/lib/CodeGen/MachineModuleInfo.cpp +++ b/lib/CodeGen/MachineModuleInfo.cpp @@ -253,7 +253,7 @@ void MMIAddrLabelMapCallbackPtr::allUsesReplacedWith(Value *V2) { MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI, const MCRegisterInfo &MRI, const MCObjectFileInfo *MOFI) - : ImmutablePass(ID), Context(MAI, MRI, MOFI) { + : ImmutablePass(ID), Context(MAI, MRI, MOFI, 0, false) { initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry()); } @@ -270,6 +270,9 @@ MachineModuleInfo::~MachineModuleInfo() { } bool MachineModuleInfo::doInitialization(Module &M) { + + Context.doInitialization(); + ObjFileMMI = 0; CompactUnwindEncoding = 0; CurCallSite = 0; @@ -291,6 +294,8 @@ bool MachineModuleInfo::doFinalization(Module &M) { delete AddrLabelSymbols; AddrLabelSymbols = 0; + Context.doFinalization(); + return false; } diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp index dd9d956..23ec0bb 100644 --- a/lib/MC/MCContext.cpp +++ b/lib/MC/MCContext.cpp @@ -31,12 +31,14 @@ typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy; MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri, - const MCObjectFileInfo *mofi, const SourceMgr *mgr) : + const MCObjectFileInfo *mofi, const SourceMgr *mgr, + bool DoAutoInitializationFinalization ) : SrcMgr(mgr), MAI(mai), MRI(mri), MOFI(mofi), Allocator(), Symbols(Allocator), UsedNames(Allocator), NextUniqueID(0), CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0), - AllowTemporaryLabels(true) { + AllowTemporaryLabels(true), + AutoInitializationFinalization(DoAutoInitializationFinalization) { MachOUniquingMap = 0; ELFUniquingMap = 0; COFFUniquingMap = 0; @@ -45,22 +47,54 @@ MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri, SecureLog = 0; SecureLogUsed = false; - DwarfLocSeen = false; - GenDwarfForAssembly = false; - GenDwarfFileNumber = 0; + if (AutoInitializationFinalization) + doInitialization(); } MCContext::~MCContext() { + + if (AutoInitializationFinalization) + doFinalization(); + // NOTE: The symbols are all allocated out of a bump pointer allocator, // we don't need to free them here. + + // If the stream for the .secure_log_unique directive was created free it. + delete (raw_ostream*)SecureLog; +} + +//===----------------------------------------------------------------------===// +// Module Lifetime Management +//===----------------------------------------------------------------------===// + +void MCContext::doInitialization() { + NextUniqueID = 0; + AllowTemporaryLabels = true; + DwarfLocSeen = false; + GenDwarfForAssembly = false; + GenDwarfFileNumber = 0; +} + +void MCContext::doFinalization() { + UsedNames.clear(); + Symbols.clear(); + Allocator.Reset(); + Instances.clear(); + MCDwarfFiles.clear(); + MCDwarfDirs.clear(); + MCGenDwarfLabelEntries.clear(); + DwarfDebugFlags = StringRef(); + MCLineSections.clear(); + MCLineSectionOrder.clear(); + CurrentDwarfLoc = MCDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0); // If we have the MachO uniquing map, free it. delete (MachOUniqueMapTy*)MachOUniquingMap; delete (ELFUniqueMapTy*)ELFUniquingMap; delete (COFFUniqueMapTy*)COFFUniquingMap; - - // If the stream for the .secure_log_unique directive was created free it. - delete (raw_ostream*)SecureLog; + MachOUniquingMap = 0; + ELFUniquingMap = 0; + COFFUniquingMap = 0; } //===----------------------------------------------------------------------===// |