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8c1e44a7a7
This reverts commit 3d6ec9885426b668450578303e9fc55c4a399ffc. The new function signature is not needed after all, as far as I can currently tell. Swift SVN r10393
45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
//===--- Local.h - Local SIL transformations. -------------------*- 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 - 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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#ifndef SWIFT_SILPASSES_UTILS_LOCAL_H
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#define SWIFT_SILPASSES_UTILS_LOCAL_H
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#include "swift/SIL/SILInstruction.h"
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namespace swift {
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/// \brief If the given instruction is dead, delete it along with its dead
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/// operands.
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///
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/// \param I The instruction to be deleted.
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/// \param Force If Force is set, don't check if the top level instruction is
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/// considered dead - delete it regardless.
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/// \return Returns true if any instructions were deleted.
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bool recursivelyDeleteTriviallyDeadInstructions(SILInstruction *I,
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bool Force = false);
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/// \brief Perform a fast local check to see if the instruction is dead.
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///
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/// This routine only examines the state of the instruction at hand.
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bool isInstructionTriviallyDead(SILInstruction *I);
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/// \brief Try to simplify the specified instruction, performing local
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/// analysis of the operands of the instruction, without looking at its uses
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/// (e.g. constant folding). If a simpler result can be found, it is
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/// returned, otherwise a null SILValue is returned.
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///
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SILValue simplifyInstruction(SILInstruction *I);
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} // end namespace swift
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#endif
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