C++ PassManagerBase类代码示例

static void addAddDiscriminatorsPass(const PassManagerBuilder &Builder,
                                     PassManagerBase &PM) {
    PM.add(createAddDiscriminatorsPass());
}

// Pass Pipeline Configuration
bool ARMTargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
  PM.add(createARMISelDag(*this));
  return false;
}

bool MipsTargetMachine::addCodeEmitter(PassManagerBase &PM,
                                       JITCodeEmitter &JCE) {
  // Machine code emitter pass for Mips.
  PM.add(createMipsJITCodeEmitterPass(*this, JCE));
  return false;
}

bool MSP430TargetMachine::addPreEmitPass(PassManagerBase &PM,
                                         CodeGenOpt::Level OptLevel) {
  // Must run branch selection immediately preceding the asm printer.
  PM.add(createMSP430BranchSelectionPass());
  return false;
}

// Implemented by targets that want to run passes immediately before
// machine code is emitted. return true if -print-machineinstrs should
// print out the code after the passes.
bool MBlazeTargetMachine::addPreEmitPass(PassManagerBase &PM,
                                         CodeGenOpt::Level OptLevel) {
  PM.add(createMBlazeDelaySlotFillerPass(*this));
  return true;
}

extern "C" void
LLVMRustAddPass(LLVMPassManagerRef PM, Pass *pass) {
    assert(pass);
    PassManagerBase *pm = unwrap(PM);
    pm->add(pass);
}

void PassManagerBuilder::addLTOOptimizationPasses(PassManagerBase &PM) {
  // Provide AliasAnalysis services for optimizations.
  addInitialAliasAnalysisPasses(PM);

  // Propagate constants at call sites into the functions they call.  This
  // opens opportunities for globalopt (and inlining) by substituting function
  // pointers passed as arguments to direct uses of functions.
  PM.add(createIPSCCPPass());

  // Now that we internalized some globals, see if we can hack on them!
  PM.add(createGlobalOptimizerPass());

  // Linking modules together can lead to duplicated global constants, only
  // keep one copy of each constant.
  PM.add(createConstantMergePass());

  // Remove unused arguments from functions.
  PM.add(createDeadArgEliminationPass());

  // Reduce the code after globalopt and ipsccp.  Both can open up significant
  // simplification opportunities, and both can propagate functions through
  // function pointers.  When this happens, we often have to resolve varargs
  // calls, etc, so let instcombine do this.
  PM.add(createInstructionCombiningPass());
  addExtensionsToPM(EP_Peephole, PM);

  // Inline small functions
  bool RunInliner = Inliner;
  if (RunInliner) {
    PM.add(Inliner);
    Inliner = nullptr;
  }

  PM.add(createPruneEHPass());   // Remove dead EH info.

  // Optimize globals again if we ran the inliner.
  if (RunInliner)
    PM.add(createGlobalOptimizerPass());
  PM.add(createGlobalDCEPass()); // Remove dead functions.

  // If we didn't decide to inline a function, check to see if we can
  // transform it to pass arguments by value instead of by reference.
  PM.add(createArgumentPromotionPass());

  // The IPO passes may leave cruft around.  Clean up after them.
  PM.add(createInstructionCombiningPass());
  addExtensionsToPM(EP_Peephole, PM);
  PM.add(createJumpThreadingPass());

  // Break up allocas
  if (UseNewSROA)
    PM.add(createSROAPass());
  else
    PM.add(createScalarReplAggregatesPass());

  // Run a few AA driven optimizations here and now, to cleanup the code.
  PM.add(createFunctionAttrsPass()); // Add nocapture.
  PM.add(createGlobalsModRefPass()); // IP alias analysis.

  PM.add(createLICMPass());                 // Hoist loop invariants.
  if (EnableMLSM)
    PM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds.
  PM.add(createGVNPass(DisableGVNLoadPRE)); // Remove redundancies.
  PM.add(createMemCpyOptPass());            // Remove dead memcpys.

  // Nuke dead stores.
  PM.add(createDeadStoreEliminationPass());

  // More loops are countable; try to optimize them.
  PM.add(createIndVarSimplifyPass());
  PM.add(createLoopDeletionPass());
  PM.add(createLoopVectorizePass(true, LoopVectorize));

  // More scalar chains could be vectorized due to more alias information
  if (RunSLPAfterLoopVectorization)
    if (SLPVectorize)
      PM.add(createSLPVectorizerPass()); // Vectorize parallel scalar chains.

  // After vectorization, assume intrinsics may tell us more about pointer
  // alignments.
  PM.add(createAlignmentFromAssumptionsPass());

  if (LoadCombine)
    PM.add(createLoadCombinePass());

  // Cleanup and simplify the code after the scalar optimizations.
  PM.add(createInstructionCombiningPass());
  addExtensionsToPM(EP_Peephole, PM);

  PM.add(createJumpThreadingPass());

  // Delete basic blocks, which optimization passes may have killed.
  PM.add(createCFGSimplificationPass());

  // Now that we have optimized the program, discard unreachable functions.
  PM.add(createGlobalDCEPass());

  // FIXME: this is profitable (for compiler time) to do at -O0 too, but
  // currently it damages debug info.
  if (MergeFunctions)
//.........这里部分代码省略.........

bool MipsTargetMachine::
addPostRegAlloc(PassManagerBase &PM) {
  PM.add(createMipsExpandPseudoPass(*this));
  return true;
}

// Install an instruction selector pass using
// the ISelDag to gen Mips code.
bool MipsTargetMachine::
addInstSelector(PassManagerBase &PM)
{
  PM.add(createMipsISelDag(*this));
  return false;
}

static void addPostInlineCheerpPasses(const PassManagerBuilder &Builder,
                                      PassManagerBase &PM) {
    //Memory intrinsic on structs should be decomposed
    PM.add(createStructMemFuncLowering());
}

// Implemented by targets that want to run passes immediately before
// machine code is emitted. return true if -print-machineinstrs should
// print out the code after the passes.
bool MipsTargetMachine::
addPreEmitPass(PassManagerBase &PM)
{
  PM.add(createMipsDelaySlotFillerPass(*this));
  return true;
}

static void addThreadSanitizerPass(const PassManagerBuilder &Builder,
                                   PassManagerBase &PM) {
    PM.add(createThreadSanitizerPass());
}

static void addAddressSanitizerPasses(const PassManagerBuilder &Builder,
                                      PassManagerBase &PM) {
    PM.add(createAddressSanitizerFunctionPass());
    PM.add(createAddressSanitizerModulePass());
}

static void addBoundsCheckingPass(const PassManagerBuilder &Builder,
                                  PassManagerBase &PM) {
    PM.add(createBoundsCheckingPass());
}

bool X86TargetMachine::addPostRegAlloc(PassManagerBase &PM,
                                       CodeGenOpt::Level OptLevel) {
  PM.add(createX86FloatingPointStackifierPass());
  return true;  // -print-machineinstr should print after this.
}