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b642d771be
Enable KeyPath/AnyKeyPath/PartialKeyPath/WritableKeyPath in Embedded Swift, but for compile-time use only: - Add keypath optimizations into the mandatory optimizations pipeline - Allow keypath optimizations to look through begin_borrow, to make them work even in OSSA. - If a use of a KeyPath doesn't optimize away, diagnose in PerformanceDiagnostics - Make UnsafePointer.pointer(to:) transparent to allow the keypath optimization to happen in the callers of UnsafePointer.pointer(to:).
65 lines
2.2 KiB
Swift
65 lines
2.2 KiB
Swift
//===--- SimplifyApply.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 ApplyInst : OnoneSimplifyable {
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func simplify(_ context: SimplifyContext) {
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if tryTransformThickToThinCallee(of: self, context) {
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return
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}
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if context.tryOptimizeKeypath(apply: self) {
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context.erase(instruction: self)
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return
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}
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_ = context.tryDevirtualize(apply: self, isMandatory: false)
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}
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}
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extension TryApplyInst : OnoneSimplifyable {
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func simplify(_ context: SimplifyContext) {
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_ = context.tryDevirtualize(apply: self, isMandatory: false)
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}
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}
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extension BeginApplyInst : OnoneSimplifyable {
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func simplify(_ context: SimplifyContext) {
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_ = context.tryDevirtualize(apply: self, isMandatory: false)
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}
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}
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/// Optimizes a thick function call if the callee is a `thin_to_thick_function` instruction:
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///
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/// %2 = thin_to_thick_function %1
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/// %3 = apply %2(...) : @callee_guaranteed
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/// ->
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/// %2 = thin_to_thick_function %1
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/// %3 = apply %1(...): @convention(thin)
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///
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private func tryTransformThickToThinCallee(of apply: ApplyInst, _ context: SimplifyContext) -> Bool {
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if let tttf = apply.callee as? ThinToThickFunctionInst,
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!apply.callee.type.isCalleeConsumedFunction
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{
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let builder = Builder(before: apply, context)
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let newApply = builder.createApply(function: tttf.operand.value,
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apply.substitutionMap,
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arguments: Array(apply.arguments),
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isNonThrowing: apply.isNonThrowing,
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isNonAsync: apply.isNonAsync,
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specializationInfo: apply.specializationInfo)
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apply.uses.replaceAll(with: newApply, context)
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context.erase(instruction: apply)
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return true
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}
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return false
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}
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