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2bfe3cf586
The linker pulls in new functions (which can change the call graph) but it does not change the control flow of the processed function. Swift SVN r26614
59 lines
1.7 KiB
C++
59 lines
1.7 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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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/SILPasses/Passes.h"
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#include "swift/SILPasses/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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void swift::performSILLinking(SILModule *M, bool LinkAll) {
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auto LinkMode = LinkAll? SILModule::LinkingMode::LinkAll :
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SILModule::LinkingMode::LinkNormal;
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for (auto &Fn : *M)
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M->linkFunction(&Fn, LinkMode);
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if (!LinkAll)
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return;
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M->linkAllWitnessTables();
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M->linkAllVTables();
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}
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namespace {
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class SILLinker : public SILModuleTransform {
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/// The entry point to the transformation.
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void run() override {
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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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SILModule &M = *getModule();
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for (auto &Fn : M)
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if (M.linkFunction(&Fn, SILModule::LinkingMode::LinkAll))
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invalidateAnalysis(&Fn, SILAnalysis::PreserveKind::Branches);
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}
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StringRef getName() override { return "SIL Linker"; }
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};
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} // end anonymous namespace
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SILTransform *swift::createSILLinker() {
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return new SILLinker();
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}
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