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1339b5403b
Correct format: //===--- Name of file - Description ----------------------------*- Lang -*-===//
77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
//===--- SILCleanup.cpp - Removes diagnostics instructions ----------------===//
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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 - 2016 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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//
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// Cleanup SIL to make it suitable for IRGen. Specifically, removes the calls to
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// Builtin.staticReport(), which are not needed post SIL.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/SILOptimizer/PassManager/Passes.h"
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#include "swift/SIL/SILFunction.h"
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#include "swift/SIL/SILInstruction.h"
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#include "swift/SIL/SILModule.h"
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#include "swift/SILOptimizer/Utils/Local.h"
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#include "swift/SILOptimizer/PassManager/Transforms.h"
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using namespace swift;
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static void cleanFunction(SILFunction &Fn) {
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for (auto &BB : Fn) {
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auto I = BB.begin(), E = BB.end();
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while (I != E) {
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// Make sure there is no iterator invalidation if the inspected
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// instruction gets removed from the block.
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SILInstruction *Inst = &*I;
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++I;
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// Remove calls to Builtin.staticReport().
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if (BuiltinInst *BI = dyn_cast<BuiltinInst>(Inst)) {
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const BuiltinInfo &B = BI->getBuiltinInfo();
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if (B.ID == BuiltinValueKind::StaticReport) {
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// The call to the builtin should get removed before we reach
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// IRGen.
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recursivelyDeleteTriviallyDeadInstructions(BI, /* Force */true);
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}
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}
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}
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}
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// Rename functions with public_external linkage to prevent symbol conflict
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// with stdlib.
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if (Fn.isDefinition() && Fn.getLinkage() == SILLinkage::PublicExternal) {
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Fn.setLinkage(SILLinkage::SharedExternal);
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}
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}
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void swift::performSILCleanup(SILModule *M) {
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for (auto &Fn : *M)
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cleanFunction(Fn);
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}
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namespace {
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class SILCleanup : public swift::SILFunctionTransform {
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/// The entry point to the transformation.
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void run() override {
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cleanFunction(*getFunction());
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invalidateAnalysis(SILAnalysis::InvalidationKind::FunctionBody);
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}
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StringRef getName() override { return "SIL Cleanup"; }
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};
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} // end anonymous namespace
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SILTransform *swift::createSILCleanup() {
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return new SILCleanup();
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}
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