mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
8f7620f627
This is the first in a sequence of patches that implement various optimizations to transform load [copy] into load_borrow. The optimization works by looking for a load [copy] that: 1. Only has destroy_value as consuming users. This implies that we do not need to pass off the in memory value at +1 and that we can use a +0 value. 2. Is loading from a memory location that is never written to or only written to after all uses of the load [copy]. and then RAUW the load [copy] with a load_borrow and convertes the destroy_value to end_borrow. NOTE: I also a .def file for AccessedStorage so we can do visitors over the kinds. The reason I want to do this is to ensure that people update these optimizations if we add new storage kinds.
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
//===--- AccessedStorage.def ----------------------------*- c++ -*---------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2018 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
///
|
|
/// A file used for metaprogramming with accessed storage. Used to enable
|
|
/// easily updateable visitors.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef ACCESSED_STORAGE
|
|
#error "Must define accesed storage before including this?!"
|
|
#endif
|
|
|
|
#ifndef ACCESSED_STORAGE_RANGE
|
|
#define ACCESSED_STORAGE_RANGE(Name, Start, End)
|
|
#endif
|
|
|
|
ACCESSED_STORAGE(Box)
|
|
ACCESSED_STORAGE(Stack)
|
|
ACCESSED_STORAGE(Global)
|
|
ACCESSED_STORAGE(Class)
|
|
ACCESSED_STORAGE(Argument)
|
|
ACCESSED_STORAGE(Yield)
|
|
ACCESSED_STORAGE(Nested)
|
|
ACCESSED_STORAGE(Unidentified)
|
|
ACCESSED_STORAGE_RANGE(AccessedStorageKind, Box, Unidentified)
|
|
|
|
#undef ACCESSED_STORAGE_RANGE
|
|
#undef ACCESSED_STORAGE
|