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//===--- IVInfoPrinter.cpp - Print SIL IV Info ----------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "swift/SILOptimizer/Analysis/IVAnalysis.h"
#include "swift/SILOptimizer/PassManager/Passes.h"
#include "swift/SILOptimizer/PassManager/Transforms.h"
using namespace swift;
namespace {
class IVInfoPrinter : public SILModuleTransform {
void dumpIV(ValueBase *Header, ValueBase *IV) {
if (IV == Header) {
llvm::errs() << "IV Header: ";
IV->dump();
return;
}
llvm::errs() << "IV: ";
IV->dump();
llvm::errs() << "with header: ";
Header->dump();
}
/// The entry point to the transformation.
void run() override {
auto *IV = PM->getAnalysis<IVAnalysis>();
for (auto &F : *getModule()) {
if (F.isExternalDeclaration()) continue;
auto &Info = *IV->get(&F);
bool FoundIV = false;
for (auto &BB : F) {
for (auto A : BB.getArguments())
if (Info.isInductionVariable(A)) {
if (!FoundIV)
llvm::errs() << "Induction variables for function: " <<
F.getName() << "\n";
FoundIV = true;
dumpIV(Info.getInductionVariableHeader(A), A);
}
for (auto &I : BB) {
auto value = dyn_cast<SingleValueInstruction>(&I);
if (!value) continue;
if (!Info.isInductionVariable(value)) continue;
if (!FoundIV)
llvm::errs() << "Induction variables for function: " <<
F.getName() << "\n";
FoundIV = true;
dumpIV(Info.getInductionVariableHeader(value), value);
}
}
if (FoundIV)
llvm::errs() << "\n";
}
}
};
} // end anonymous namespace
SILTransform *swift::createIVInfoPrinter() {
return new IVInfoPrinter();
}
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