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//===--- SimplifyConvertEscapeToNoEscape.swift ----------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import SIL
extension ConvertEscapeToNoEscapeInst : OnoneSimplifyable {
func simplify(_ context: SimplifyContext) {
tryCombineWithThinToThickOperand(context)
}
}
private extension ConvertEscapeToNoEscapeInst {
/// Combine with a thin_to_thick_function operand:
///
/// %2 = thin_to_thick_function %1 to $() -> ()
/// %3 = convert_escape_to_noescape %2 : $() -> () to $@noescape () -> ()
/// ->
/// %3 = thin_to_thick_function %1 to $@noescape () -> ()
func tryCombineWithThinToThickOperand(_ context: SimplifyContext) {
if let thinToThick = fromFunction as? ThinToThickFunctionInst {
let builder = Builder(before: self, context)
let noEscapeFnType = thinToThick.type.getFunctionType(withNoEscape: true)
let newThinToThick = builder.createThinToThickFunction(thinFunction: thinToThick.operand.value,
resultType: noEscapeFnType)
uses.replaceAll(with: newThinToThick, context)
context.erase(instruction: self)
}
}
}
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