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ae2e903574
This isn't a "complete" port of the standard library for embedded Swift, but something that should serve as a starting point for further iterations on the stdlib. - General CMake logic for building a library as ".swiftmodule only" (ONLY_SWIFTMODULE). - CMake logic in stdlib/public/core/CMakeLists.txt to start building the embedded stdlib for a handful of hardcoded target triples. - Lots of annotations throughout the standard library to make types, functions, protocols unavailable in embedded Swift (@_unavailableInEmbedded). - Mainly this is about stdlib functionality that relies on existentials, type erasure, metatypes, reflection, string interpolations. - We rely on function body removal of unavailable functions to eliminate the actual problematic SIL code (existentials). - Many .swift files are not included in the compilation of embedded stdlib at all, to simplify the scope of the annotations. - EmbeddedStubs.swift is used to stub out (as unavailable and fatalError'd) the missing functionality.
29 lines
763 B
Swift
29 lines
763 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -target arm64-apple-none-macho -Xcc -D__MACH__ -Xcc -D__arm64__ -Xcc -D__APPLE__ \
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// RUN: -enable-experimental-feature Embedded -enforce-exclusivity=none %s -c -o %t/a.o
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// RUN: %target-clang %t/a.o -o %t/a.out
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// RUN: %target-run %t/a.out | %FileCheck %s
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// REQUIRES: executable_test
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// REQUIRES: VENDOR=apple
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// REQUIRES: CPU=arm64
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@_silgen_name("putchar")
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func putchar(_: UInt8)
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public func print(_ s: StaticString, terminator: StaticString = "\n") {
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var p = s.utf8Start
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while p.pointee != 0 {
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putchar(p.pointee)
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p += 1
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}
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p = terminator.utf8Start
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while p.pointee != 0 {
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putchar(p.pointee)
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p += 1
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}
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}
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print("Hello, Embedded Swift!")
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// CHECK: Hello, Embedded Swift!
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