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8c0f20987c
As a first step to getting mandatory inlining out of the business of 'linking' (walking the function graph and deserializing all referenced functions), add a new optimizer pass which links everything in the mandatory pipeline. For now this is mostly NFC, except it regresses an optimization I made recently by linking in bodies of methods of deserialized vtables eagerly. This will be addressed in upcoming patches.
51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
//===--- Link.cpp - Link in transparent SILFunctions from module ----------===//
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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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#include "swift/SILOptimizer/PassManager/Passes.h"
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#include "swift/SILOptimizer/PassManager/Transforms.h"
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#include "swift/SIL/SILModule.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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/// Copies code from the standard library into the user program to enable
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/// optimizations.
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class SILLinker : public SILModuleTransform {
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SILModule::LinkingMode LinkMode;
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public:
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explicit SILLinker(SILModule::LinkingMode LinkMode) : LinkMode(LinkMode) {}
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void run() override {
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SILModule &M = *getModule();
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for (auto &Fn : M)
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if (M.linkFunction(&Fn, LinkMode))
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invalidateAnalysis(&Fn, SILAnalysis::InvalidationKind::Everything);
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}
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};
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} // end anonymous namespace
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SILTransform *swift::createMandatorySILLinker() {
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return new SILLinker(SILModule::LinkingMode::LinkNormal);
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}
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SILTransform *swift::createPerformanceSILLinker() {
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return new SILLinker(SILModule::LinkingMode::LinkAll);
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}
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