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[Driver] Always link arclite when deploying earlier than macOS 10.14

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For the upcoming hook in the ObjC runtime for class_getImageName
(see previous commit).
This commit is contained in:
Jordan Rose
2018-07-12 13:20:08 -07:00
parent 3ed3774e07
commit df974b2190
2 changed files with 35 additions and 12 deletions
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28
lib/Driver/DarwinToolChains.cpp
View File

@@ -198,6 +198,26 @@ static void addVersionString(const ArgList &inputArgs, ArgStringList &arguments,
arguments.push_back(inputArgs.MakeArgString(os.str()));
}
/// Returns true if the compiler depends on features provided by the ObjC
/// runtime that are not present on the deployment target indicated by
/// \p triple.
static bool wantsObjCRuntime(const llvm::Triple &triple) {
assert((!triple.isTvOS() || triple.isiOS()) &&
"tvOS is considered a kind of iOS");
// When updating the versions listed here, please record the most recent
// feature being depended on and when it was introduced:
//
// - The hook to override class_getImageName (macOS 10.14 and equivalent)
if (triple.isiOS())
return triple.isOSVersionLT(12);
if (triple.isMacOSX())
return triple.isMacOSXVersionLT(10, 14);
if (triple.isWatchOS())
return triple.isOSVersionLT(5);
llvm_unreachable("unknown Darwin OS");
}
ToolChain::InvocationInfo
toolchains::Darwin::constructInvocation(const LinkJobAction &job,
const JobContext &context) const {
@@ -282,15 +302,9 @@ toolchains::Darwin::constructInvocation(const LinkJobAction &job,
if (llvm::sys::fs::exists(CompilerRTPath))
Arguments.push_back(context.Args.MakeArgString(CompilerRTPath));
bool wantsObjCRuntime = false;
if (Triple.isiOS())
wantsObjCRuntime = Triple.isOSVersionLT(9);
else if (Triple.isMacOSX())
wantsObjCRuntime = Triple.isMacOSXVersionLT(10, 11);
if (context.Args.hasFlag(options::OPT_link_objc_runtime,
options::OPT_no_link_objc_runtime,
/*Default=*/wantsObjCRuntime)) {
/*Default=*/wantsObjCRuntime(Triple))) {
llvm::SmallString<128> ARCLiteLib(D.getSwiftProgramPath());
llvm::sys::path::remove_filename(ARCLiteLib); // 'swift'
llvm::sys::path::remove_filename(ARCLiteLib); // 'bin'

19
test/Driver/linker-arclite.swift
View File

@@ -11,15 +11,24 @@
// RUN: %swiftc_driver -driver-print-jobs -target x86_64-apple-ios8.0 %S/../Inputs/empty.swift | %FileCheck -check-prefix IOS_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target x86_64-apple-macosx10.11 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target x86_64-apple-ios9.0 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target arm64-apple-tvos9.0 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target armv7k-apple-watchos2.0 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// IOS_ARCLITE: bin/ld{{"? }}
// IOS_ARCLITE: -force_load {{[^ ]+/lib/arc/libarclite_iphonesimulator.a}}
// IOS_ARCLITE: -o {{[^ ]+}}
// RUN: %swiftc_driver -driver-print-jobs -target x86_64-apple-macosx10.14 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target x86_64-apple-macosx10.13 %S/../Inputs/empty.swift | %FileCheck -check-prefix ANY_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target x86_64-apple-ios12 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target x86_64-apple-ios11 %S/../Inputs/empty.swift | %FileCheck -check-prefix ANY_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target arm64-apple-tvos12 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target arm64-apple-tvos11 %S/../Inputs/empty.swift | %FileCheck -check-prefix ANY_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target armv7k-apple-watchos5 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO_ARCLITE %s
// RUN: %swiftc_driver -driver-print-jobs -target armv7k-apple-watchos4 %S/../Inputs/empty.swift | %FileCheck -check-prefix ANY_ARCLITE %s
// NO_ARCLITE: bin/ld{{"? }}
// NO_ARCLITE-NOT: arclite
// NO_ARCLITE: -o {{[^ ]+}}
// ANY_ARCLITE: bin/ld{{"? }}
// ANY_ARCLITE: -force_load {{[^ ]+}}/lib/arc/libarclite_{{.+}}.a
// ANY_ARCLITE: -o {{[^ ]+}}