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ARM: allow __thread on OS versions that have the required runtime support. 

llvm-svn: 257041
This commit is contained in:
Tim Northover 2016-01-07 09:04:46 +00:00
parent 3f07d85826
commit a12d0a99b1
2 changed files with 35 additions and 1 deletions
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19
clang/lib/Basic/Targets.cpp
View File

@ -223,7 +223,24 @@ protected:
public:
DarwinTargetInfo(const llvm::Triple &Triple) : OSTargetInfo<Target>(Triple) {
this->TLSSupported = Triple.isMacOSX() && !Triple.isMacOSXVersionLT(10, 7);
// By default, no TLS, and we whitelist permitted architecture/OS
// combinations.
this->TLSSupported = false;
if (Triple.isMacOSX())
this->TLSSupported = !Triple.isMacOSXVersionLT(10, 7);
else if (Triple.isiOS()) {
// 64-bit iOS supported it from 8 onwards, 32-bit from 9 onwards.
if (Triple.getArch() == llvm::Triple::x86_64 ||
Triple.getArch() == llvm::Triple::aarch64)
this->TLSSupported = !Triple.isOSVersionLT(8);
else if (Triple.getArch() == llvm::Triple::x86 ||
Triple.getArch() == llvm::Triple::arm ||
Triple.getArch() == llvm::Triple::thumb)
this->TLSSupported = !Triple.isOSVersionLT(9);
} else if (Triple.isWatchOS())
this->TLSSupported = !Triple.isOSVersionLT(2);
this->MCountName = "\01mcount";
}

17
clang/test/Sema/darwin-tls.c Normal file
View File

@ -0,0 +1,17 @@
// RUN: not %clang_cc1 -fsyntax-only -triple x86_64-apple-macosx10.6 %s 2>&1 | FileCheck %s --check-prefix NO-TLS
// RUN: %clang_cc1 -fsyntax-only -triple x86_64-apple-macosx10.7 %s 2>&1 | FileCheck %s --check-prefix TLS
// RUN: not %clang_cc1 -fsyntax-only -triple arm64-apple-ios7.1 %s 2>&1 | FileCheck %s --check-prefix NO-TLS
// RUN: %clang_cc1 -fsyntax-only -triple arm64-apple-ios8.0 %s 2>&1 | FileCheck %s --check-prefix TLS
// RUN: not %clang_cc1 -fsyntax-only -triple thumbv7s-apple-ios8.3 %s 2>&1 | FileCheck %s --check-prefix NO-TLS
// RUN: %clang_cc1 -fsyntax-only -triple thumbv7s-apple-ios9.0 %s 2>&1 | FileCheck %s --check-prefix TLS
// RUN: %clang_cc1 -fsyntax-only -triple armv7-apple-ios9.0 %s 2>&1 | FileCheck %s --check-prefix TLS
// RUN: not %clang_cc1 -fsyntax-only -triple thumbv7k-apple-watchos1.0 %s 2>&1 | FileCheck %s --check-prefix NO-TLS
// RUN: %clang_cc1 -fsyntax-only -triple thumbv7k-apple-watchos2.0 %s 2>&1 | FileCheck %s --check-prefix TLS
__thread int a;
// NO-TLS: thread-local storage is not supported for the current target
// TLS-NOT: thread-local storage is not supported for the current target
wibble;