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Fix libLTO:

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* Call InitializeAllTargets on every path where we might query the
   TargetRegistry. This fixes PR4604.
 * flush the formatted_raw_ostream& or else not all of the assembly will make
   it to the .s file. (It doesn't do this in its destructor?!)
 * Due to a reversed conditional, libLTO was reporting many symbols as both
   defined and undefined, including two definitions of the same symbol name
   in its symbol list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77170 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2009-07-26 22:16:39 +00:00
parent 2749b3e745
commit d42b58b61c
2 changed files with 13 additions and 6 deletions
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10
tools/lto/LTOCodeGenerator.cpp
View File

@ -77,9 +77,8 @@ LTOCodeGenerator::LTOCodeGenerator()
_codeModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC), _codeModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC),
_nativeObjectFile(NULL), _gccPath(NULL), _assemblerPath(NULL) _nativeObjectFile(NULL), _gccPath(NULL), _assemblerPath(NULL)
{ {
InitializeAllTargets(); InitializeAllTargets();
InitializeAllAsmPrinters(); InitializeAllAsmPrinters();
} }
LTOCodeGenerator::~LTOCodeGenerator() LTOCodeGenerator::~LTOCodeGenerator()
@ -398,7 +397,7 @@ void LTOCodeGenerator::applyScopeRestrictions()
bool LTOCodeGenerator::generateAssemblyCode(formatted_raw_ostream& out, bool LTOCodeGenerator::generateAssemblyCode(formatted_raw_ostream& out,
std::string& errMsg) std::string& errMsg)
{ {
if ( this->determineTarget(errMsg) ) if ( this->determineTarget(errMsg) )
return true; return true;
// mark which symbols can not be internalized // mark which symbols can not be internalized
@ -472,6 +471,9 @@ bool LTOCodeGenerator::generateAssemblyCode(formatted_raw_ostream& out,
codeGenPasses->run(*it); codeGenPasses->run(*it);
codeGenPasses->doFinalization(); codeGenPasses->doFinalization();
out.flush();
return false; // success return false; // success
} }

9
tools/lto/LTOModule.cpp
View File

@ -30,6 +30,7 @@
#include "llvm/Target/TargetAsmInfo.h" #include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegistry.h" #include "llvm/Target/TargetRegistry.h"
#include "llvm/Target/TargetSelect.h"
using namespace llvm; using namespace llvm;
@ -125,6 +126,8 @@ LTOModule* LTOModule::makeLTOModule(const void* mem, size_t length,
/// subtarget. It would be better if we could encode this information into the /// subtarget. It would be better if we could encode this information into the
/// IR. See <rdar://5972456>. /// IR. See <rdar://5972456>.
std::string getFeatureString(const char *TargetTriple) { std::string getFeatureString(const char *TargetTriple) {
InitializeAllTargets();
SubtargetFeatures Features; SubtargetFeatures Features;
if (strncmp(TargetTriple, "powerpc-apple-", 14) == 0) { if (strncmp(TargetTriple, "powerpc-apple-", 14) == 0) {
@ -140,6 +143,8 @@ std::string getFeatureString(const char *TargetTriple) {
LTOModule* LTOModule::makeLTOModule(MemoryBuffer* buffer, LTOModule* LTOModule::makeLTOModule(MemoryBuffer* buffer,
std::string& errMsg) std::string& errMsg)
{ {
InitializeAllTargets();
// parse bitcode buffer // parse bitcode buffer
OwningPtr<Module> m(ParseBitcodeFile(buffer, getGlobalContext(), &errMsg)); OwningPtr<Module> m(ParseBitcodeFile(buffer, getGlobalContext(), &errMsg));
if ( !m ) if ( !m )
@ -422,7 +427,7 @@ void LTOModule::addPotentialUndefinedSymbol(GlobalValue* decl, Mangler &mangler)
// Find exeternal symbols referenced by VALUE. This is a recursive function. // Find external symbols referenced by VALUE. This is a recursive function.
void LTOModule::findExternalRefs(Value* value, Mangler &mangler) { void LTOModule::findExternalRefs(Value* value, Mangler &mangler) {
if (GlobalValue* gv = dyn_cast<GlobalValue>(value)) { if (GlobalValue* gv = dyn_cast<GlobalValue>(value)) {
@ -508,7 +513,7 @@ void LTOModule::lazyParseSymbols()
it != _undefines.end(); ++it) { it != _undefines.end(); ++it) {
// if this symbol also has a definition, then don't make an undefine // if this symbol also has a definition, then don't make an undefine
// because it is a tentative definition // because it is a tentative definition
if ( _defines.count(it->getKey())) { if ( _defines.count(it->getKey()) == 0 ) {
NameAndAttributes info = it->getValue(); NameAndAttributes info = it->getValue();
_symbols.push_back(info); _symbols.push_back(info);
} }