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ef8825bfe6
LLVM has removed llvm::Optional, move over to std::optional. Also clang-format to fix up all the renamed #includes.
47 lines
2.0 KiB
C++
47 lines
2.0 KiB
C++
//===--- CompileTimeInterpolationUtils.h ----------------------------------===//
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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 - 2021 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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// Utilities for the compile-time string interpolation approach used by the
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// OSLogOptimization pass.
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#ifndef SWIFT_SILOPTIMIZER_COMPILE_TIME_INTERPOLATION_H
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#define SWIFT_SILOPTIMIZER_COMPILE_TIME_INTERPOLATION_H
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#include "swift/SIL/SILBasicBlock.h"
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#include "swift/SIL/SILConstants.h"
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#include "swift/SILOptimizer/Utils/ConstExpr.h"
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namespace swift {
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/// Decide if the given instruction (which could possibly be a call) should
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/// be constant evaluated.
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///
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/// \returns true iff the given instruction is not a call or if it is, it calls
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/// a known constant-evaluable function such as string append etc., or calls
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/// a function annotate as "constant_evaluable".
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bool shouldAttemptEvaluation(SILInstruction *inst);
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/// Skip or evaluate the given instruction based on the evaluation policy and
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/// handle errors. The policy is to evaluate all non-apply instructions as well
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/// as apply instructions that are marked as "constant_evaluable".
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std::pair<std::optional<SILBasicBlock::iterator>, std::optional<SymbolicValue>>
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evaluateOrSkip(ConstExprStepEvaluator &stepEval, SILBasicBlock::iterator instI);
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/// Given a vector of SILValues \p worklist, compute the set of transitive
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/// users of these values (excluding the worklist values) by following the
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/// use-def chain starting at value. Note that this function does not follow
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/// use-def chains though branches.
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void getTransitiveUsers(SILInstructionResultArray values,
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SmallVectorImpl<SILInstruction *> &users);
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} // end namespace swift
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#endif
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