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31143bf79c
For inserting new instruction after another instruction. This is especially interesting if the insertion point is a terminator. In this case, the new instruction(s) are inserted in the successor block(s).
38 lines
1.3 KiB
Swift
38 lines
1.3 KiB
Swift
//===--- OptUtils.swift - Utilities for optimzations ----------------------===//
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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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import SIL
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extension Value {
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var nonDebugUses: LazyFilterSequence<UseList> {
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uses.lazy.filter { !($0.instruction is DebugValueInst) }
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}
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}
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extension Builder {
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static func insert(after inst: Instruction, location: Location,
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_ context: PassContext, insertFunc: (Builder) -> ()) {
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if inst is TermInst {
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for succ in inst.block.successors {
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assert(succ.hasSinglePredecessor,
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"the terminator instruction must not have critical successors")
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let builder = Builder(at: succ.instructions.first!, location: location,
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context)
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insertFunc(builder)
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}
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} else {
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let builder = Builder(at: inst.next!, location: location, context)
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insertFunc(builder)
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}
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}
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}
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