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46 lines
1.7 KiB
Swift
46 lines
1.7 KiB
Swift
//===--- SimplifyConvertEscapeToNoEscape.swift ----------------------------===//
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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 - 2023 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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import SIL
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extension ConvertEscapeToNoEscapeInst : OnoneSimplifiable {
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func simplify(_ context: SimplifyContext) {
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tryCombineWithThinToThickOperand(context)
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}
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}
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private extension ConvertEscapeToNoEscapeInst {
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/// Combine with a thin_to_thick_function operand:
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///
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/// %2 = thin_to_thick_function %1 to $() -> ()
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/// %3 = convert_escape_to_noescape %2 : $() -> () to $@noescape () -> ()
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/// ->
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/// %3 = thin_to_thick_function %1 to $@noescape () -> ()
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func tryCombineWithThinToThickOperand(_ context: SimplifyContext) {
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// compiling bridged.getFunctionTypeWithNoEscape crashes the 5.10 Windows compiler
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#if !os(Windows)
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// TODO: https://github.com/apple/swift/issues/73253
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if let thinToThick = fromFunction as? ThinToThickFunctionInst {
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let builder = Builder(before: self, context)
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let noEscapeFnType = thinToThick.type.getFunctionType(withNoEscape: true)
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let newThinToThick = builder.createThinToThickFunction(thinFunction: thinToThick.operand.value,
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resultType: noEscapeFnType)
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uses.replaceAll(with: newThinToThick, context)
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context.erase(instruction: self)
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}
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#endif
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}
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}
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