static int runCompilePasses(Module *ModuleRef,
unsigned ModuleIndex,
ThreadedFunctionQueue *FuncQueue,
const Triple &TheTriple,
TargetMachine &Target,
StringRef ProgramName,
raw_pwrite_stream &OS){
PNaClABIErrorReporter ABIErrorReporter;
if (SplitModuleCount > 1 || ExternalizeAll) {
// Add function and global names, and give them external linkage.
// This relies on LLVM's consistent auto-generation of names, we could
// maybe do our own in case something changes there.
for (Function &F : *ModuleRef) {
if (!F.hasName())
F.setName("Function");
if (F.hasInternalLinkage())
F.setLinkage(GlobalValue::ExternalLinkage);
}
for (Module::global_iterator GI = ModuleRef->global_begin(),
GE = ModuleRef->global_end();
GI != GE; ++GI) {
if (!GI->hasName())
GI->setName("Global");
if (GI->hasInternalLinkage())
GI->setLinkage(GlobalValue::ExternalLinkage);
}
if (ModuleIndex > 0) {
// Remove the initializers for all global variables, turning them into
// declarations.
for (Module::global_iterator GI = ModuleRef->global_begin(),
GE = ModuleRef->global_end();
GI != GE; ++GI) {
assert(GI->hasInitializer() && "Global variable missing initializer");
Constant *Init = GI->getInitializer();
GI->setInitializer(nullptr);
if (Init->getNumUses() == 0)
Init->destroyConstant();
}
}
}
// Make all non-weak symbols hidden for better code. We cannot do
// this for weak symbols. The linker complains when some weak
// symbols are not resolved.
for (Function &F : *ModuleRef) {
if (!F.isWeakForLinker() && !F.hasLocalLinkage())
F.setVisibility(GlobalValue::HiddenVisibility);
}
for (Module::global_iterator GI = ModuleRef->global_begin(),
GE = ModuleRef->global_end();
GI != GE; ++GI) {
if (!GI->isWeakForLinker() && !GI->hasLocalLinkage())
GI->setVisibility(GlobalValue::HiddenVisibility);
}
// Build up all of the passes that we want to do to the module.
std::unique_ptr<legacy::PassManagerBase> PM;
if (LazyBitcode)
PM.reset(new legacy::FunctionPassManager(ModuleRef));
else
PM.reset(new legacy::PassManager());
// Add the target data from the target machine, if it exists, or the module.
if (const DataLayout *DL = Target.getDataLayout())
ModuleRef->setDataLayout(*DL);
// For conformance with llc, we let the user disable LLVM IR verification with
// -disable-verify. Unlike llc, when LLVM IR verification is enabled we only
// run it once, before PNaCl ABI verification.
if (!NoVerify)
PM->add(createVerifierPass());
// Add the ABI verifier pass before the analysis and code emission passes.
if (PNaClABIVerify)
PM->add(createPNaClABIVerifyFunctionsPass(&ABIErrorReporter));
// Add the intrinsic resolution pass. It assumes ABI-conformant code.
PM->add(createResolvePNaClIntrinsicsPass());
// Add an appropriate TargetLibraryInfo pass for the module's triple.
TargetLibraryInfoImpl TLII(TheTriple);
// The -disable-simplify-libcalls flag actually disables all builtin optzns.
if (DisableSimplifyLibCalls)
TLII.disableAllFunctions();
PM->add(new TargetLibraryInfoWrapperPass(TLII));
// Allow subsequent passes and the backend to better optimize instructions
// that were simplified for PNaCl's ABI. This pass uses the TargetLibraryInfo
// above.
PM->add(createBackendCanonicalizePass());
// Ask the target to add backend passes as necessary. We explicitly ask it
// not to add the verifier pass because we added it earlier.
if (Target.addPassesToEmitFile(*PM, OS, FileType,
/* DisableVerify */ true)) {
errs() << ProgramName
<< ": target does not support generation of this file type!\n";
return 1;
}
if (LazyBitcode) {
auto FPM = static_cast<legacy::FunctionPassManager *>(PM.get());
FPM->doInitialization();
unsigned FuncIndex = 0;
switch (SplitModuleSched) {
case SplitModuleStatic:
for (Function &F : *ModuleRef) {
if (FuncQueue->GrabFunctionStatic(FuncIndex, ModuleIndex)) {
FPM->run(F);
CheckABIVerifyErrors(ABIErrorReporter, "Function " + F.getName());
F.Dematerialize();
}
++FuncIndex;
}
break;
case SplitModuleDynamic:
unsigned ChunkSize = 0;
unsigned NumFunctions = FuncQueue->Size();
Module::iterator I = ModuleRef->begin();
while (FuncIndex < NumFunctions) {
ChunkSize = FuncQueue->RecommendedChunkSize();
unsigned NextIndex;
bool grabbed = FuncQueue->GrabFunctionDynamic(FuncIndex, ChunkSize,
NextIndex);
if (grabbed) {
while (FuncIndex < NextIndex) {
if (!I->isMaterializable() && I->isDeclaration()) {
++I;
continue;
}
FPM->run(*I);
CheckABIVerifyErrors(ABIErrorReporter, "Function " + I->getName());
I->Dematerialize();
++FuncIndex;
++I;
}
} else {
while (FuncIndex < NextIndex) {
if (!I->isMaterializable() && I->isDeclaration()) {
++I;
continue;
}
++FuncIndex;
++I;
}
}
}
break;
}
FPM->doFinalization();
} else
static_cast<legacy::PassManager *>(PM.get())->run(*ModuleRef);
return 0;
}
