swift-mirror/SwiftCompilerSources/Sources/Optimizer/InstructionSimplification/SimplifyStructExtract.swift

//===--- SimplifyStructExtract.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 StructExtractInst : OnoneSimplifiable, SILCombineSimplifiable {
  func simplify(_ context: SimplifyContext) {
    guard let structInst = self.struct as? StructInst else {
      return
    }
    context.tryReplaceRedundantInstructionPair(first: structInst, second: self,
                                               with: structInst.operands[fieldIndex].value)
  }
}