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//===---------- MachinePassManager.cpp ------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains the pass management machinery for machine functions.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachinePassManager.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/IR/PassManagerImpl.h"
using namespace llvm;
namespace llvm {
template class AllAnalysesOn<MachineFunction>;
template class AnalysisManager<MachineFunction>;
template class PassManager<MachineFunction>;
Error MachineFunctionPassManager::run(Module &M,
MachineFunctionAnalysisManager &MFAM) {
// MachineModuleAnalysis is a module analysis pass that is never invalidated
// because we don't run any module pass in codegen pipeline. This is very
// important because the codegen state is stored in MMI which is the analysis
// result of MachineModuleAnalysis. MMI should not be recomputed.
auto &MMI = MFAM.getResult<MachineModuleAnalysis>(M);
(void)RequireCodeGenSCCOrder;
assert(!RequireCodeGenSCCOrder && "not implemented");
// Add a PIC to verify machine functions.
if (VerifyMachineFunction) {
PassInstrumentation PI = MFAM.getResult<PassInstrumentationAnalysis>(M);
// No need to pop this callback later since MIR pipeline is flat which means
// current pipeline is the top-level pipeline. Callbacks are not used after
// current pipeline.
PI.pushBeforeNonSkippedPassCallback([&MFAM](StringRef PassID, Any IR) {
assert(any_isa<const MachineFunction *>(IR));
const MachineFunction *MF = any_cast<const MachineFunction *>(IR);
assert(MF && "Machine function should be valid for printing");
std::string Banner = std::string("After ") + std::string(PassID);
verifyMachineFunction(&MFAM, Banner, *MF);
});
}
if (DebugLogging) {
dbgs() << "Starting " << getTypeName<MachineFunction>()
<< " pass manager run.\n";
}
for (auto &F : InitializationFuncs) {
if (auto Err = F(M, MFAM))
return Err;
}
unsigned Idx = 0;
size_t Size = Passes.size();
do {
// Run machine module passes
for (; MachineModulePasses.count(Idx) && Idx != Size; ++Idx) {
if (DebugLogging)
dbgs() << "Running pass: " << Passes[Idx]->name() << " on "
<< M.getName() << '\n';
if (auto Err = MachineModulePasses.at(Idx)(M, MFAM))
return Err;
}
// Finish running all passes.
if (Idx == Size)
break;
// Run machine function passes
// Get index range of machine function passes.
unsigned Begin = Idx;
for (; !MachineModulePasses.count(Idx) && Idx != Size; ++Idx)
;
for (Function &F : M) {
// Do not codegen any 'available_externally' functions at all, they have
// definitions outside the translation unit.
if (F.hasAvailableExternallyLinkage())
continue;
MachineFunction &MF = MMI.getOrCreateMachineFunction(F);
PassInstrumentation PI = MFAM.getResult<PassInstrumentationAnalysis>(MF);
for (unsigned I = Begin, E = Idx; I != E; ++I) {
auto *P = Passes[I].get();
if (!PI.runBeforePass<MachineFunction>(*P, MF))
continue;
// TODO: EmitSizeRemarks
PreservedAnalyses PassPA = P->run(MF, MFAM);
PI.runAfterPass(*P, MF, PassPA);
MFAM.invalidate(MF, PassPA);
}
}
} while (true);
for (auto &F : FinalizationFuncs) {
if (auto Err = F(M, MFAM))
return Err;
}
if (DebugLogging) {
dbgs() << "Finished " << getTypeName<MachineFunction>()
<< " pass manager run.\n";
}
return Error::success();
}
} // namespace llvm
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