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f35a2a3cf8
To do so this commit does a few different things: 1. I changed SILOptFunctionBuilder to notify the pass manager's logging functionality when new functions are added to the module and to notify analyses as well. NOTE: This on purpose does not put the new function on the pass manager worklist since we do not want to by mistake introduce a large amount of re-optimizations. Such a thing should be explicit. 2. I eliminated SILModuleTransform::notifyAddFunction. This just performed the operations from 1. Now that SILOptFunctionBuilder performs this operation for us, it is not needed. 3. I changed SILFunctionTransform::notifyAddFunction to just add the function to the passmanager worklist. It does not need to notify the pass manager's logging or analyses that a new function was added to the module since SILOptFunctionBuilder now performs that operation. Given its reduced functionality, I changed the name to addFunctionToPassManagerWorklist(...). The name is a little long/verbose, but this is a feature since one should think before getting the pass manager to rerun transforms on a function. Also, giving it a longer name calls out the operation in the code visually, giving this operation more prominance when reading code. NOTE: I did the rename using Xcode's refactoring functionality! rdar://42301529
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
//===--- ConstantPropagation.cpp - Constant fold and diagnose overflows ---===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "constant-propagation"
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#include "swift/SILOptimizer/PassManager/Transforms.h"
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#include "swift/SILOptimizer/Utils/SILOptFunctionBuilder.h"
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#include "swift/SILOptimizer/Utils/ConstantFolding.h"
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using namespace swift;
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//===----------------------------------------------------------------------===//
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// Top Level Driver
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//===----------------------------------------------------------------------===//
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namespace {
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class ConstantPropagation : public SILFunctionTransform {
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bool EnableDiagnostics;
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public:
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ConstantPropagation(bool EnableDiagnostics) :
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EnableDiagnostics(EnableDiagnostics) {}
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private:
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/// The entry point to the transformation.
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void run() override {
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SILOptFunctionBuilder FuncBuilder(*this);
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ConstantFolder Folder(FuncBuilder, getOptions().AssertConfig,
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EnableDiagnostics);
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Folder.initializeWorklist(*getFunction());
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auto Invalidation = Folder.processWorkList();
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if (Invalidation != SILAnalysis::InvalidationKind::Nothing) {
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invalidateAnalysis(Invalidation);
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}
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}
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};
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} // end anonymous namespace
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SILTransform *swift::createDiagnosticConstantPropagation() {
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// Diagostic propagation is rerun on deserialized SIL because it is sensitive
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// to assert configuration.
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return new ConstantPropagation(true /*enable diagnostics*/);
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}
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SILTransform *swift::createPerformanceConstantPropagation() {
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return new ConstantPropagation(false /*disable diagnostics*/);
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}
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