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//===--- EpilogueRetainReleaseMatcherDumper.cpp - Find Epilogue Releases --===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This pass finds the epilogue releases matched to each argument of the
/// function.
///
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "sil-epilogue-release-dumper"
#include "swift/SILOptimizer/PassManager/Passes.h"
#include "swift/SIL/SILArgument.h"
#include "swift/SIL/SILFunction.h"
#include "swift/SIL/SILValue.h"
#include "swift/SILOptimizer/Analysis/AliasAnalysis.h"
#include "swift/SILOptimizer/Analysis/ARCAnalysis.h"
#include "swift/SILOptimizer/Analysis/Analysis.h"
#include "swift/SILOptimizer/Analysis/RCIdentityAnalysis.h"
#include "swift/SILOptimizer/PassManager/Transforms.h"
using namespace swift;
//===----------------------------------------------------------------------===//
// Top Level Driver
//===----------------------------------------------------------------------===//
namespace {
/// Find and dump the epilogue release instructions for the arguments.
class SILEpilogueRetainReleaseMatcherDumper : public SILModuleTransform {
void run() override {
auto *RCIA = getAnalysis<RCIdentityAnalysis>();
for (auto &Fn: *getModule()) {
// Function is not definition.
if (!Fn.isDefinition())
continue;
auto *AA = PM->getAnalysis<AliasAnalysis>(&Fn);
llvm::outs() << "START: sil @" << Fn.getName() << "\n";
// Handle @owned return value.
ConsumedResultToEpilogueRetainMatcher RetMap(RCIA->get(&Fn), AA, &Fn);
for (auto &RI : RetMap)
llvm::outs() << *RI;
// Handle @owned function arguments.
ConsumedArgToEpilogueReleaseMatcher RelMap(RCIA->get(&Fn), &Fn);
// Iterate over arguments and dump their epilogue releases.
for (auto Arg : Fn.getArguments()) {
llvm::outs() << *Arg;
// Can not find an epilogue release instruction for the argument.
for (auto &RI : RelMap.getReleasesForArgument(Arg))
llvm::outs() << *RI;
}
llvm::outs() << "END: sil @" << Fn.getName() << "\n";
}
}
};
} // end anonymous namespace
SILTransform *swift::createEpilogueRetainReleaseMatcherDumper() {
return new SILEpilogueRetainReleaseMatcherDumper();
}
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