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08872244b7
We can treat a throw instruction like we would a return. Insert the release for the propagated partial_apply before the throw instruction.
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
//===--- CFG.h - Routines which analyze the CFG of a function ---*- C++ -*-===//
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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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#ifndef SWIFT_SILOPTIMIZER_ANALYSIS_CFG_H
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#define SWIFT_SILOPTIMIZER_ANALYSIS_CFG_H
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namespace llvm {
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template <typename T> class TinyPtrVector;
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} // end namespace llvm
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namespace swift {
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class SILFunction;
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class SILBasicBlock;
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/// Return true if we conservatively find all BB's that are non-failure exit
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/// basic blocks and place them in \p BBs. If we find something we don't
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/// understand, bail.
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///
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/// A non-failure exit BB is defined as a BB that:
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///
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/// 1. Has a return terminator.
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/// 2. unreachable + noreturn terminator sequence.
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/// 3. has a throw terminator.
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///
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/// If we just have an unreachable without a noreturn call before it, we must
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/// have a failure BB.
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///
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/// We use a TinyPtrVector since in most cases this will only return one
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/// SILBasicBlock since non-failure noreturn functions should not occur often
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/// implying in most cases this will be one element.
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///
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/// TODO:
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bool findAllNonFailureExitBBs(SILFunction *F,
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llvm::TinyPtrVector<SILBasicBlock *> &BBs);
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} // end namespace swift
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#endif
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