r184113 - Use atomic instructions on Bitrig armv6. Patch by Patrick Wildt.

[Rafael Espindola]

Author: rafael
Date: Mon Jun 17 15:00:15 2013
New Revision: 184113

URL: http://llvm.org/viewvc/llvm-project?rev=184113&view=rev
Log:
Use atomic instructions on Bitrig armv6. Patch by Patrick Wildt.

Modified:
    cfe/trunk/lib/Basic/Targets.cpp
    cfe/trunk/test/CodeGen/linux-arm-atomic.c

Modified: cfe/trunk/lib/Basic/Targets.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets.cpp?rev=184113&r1=184112&r2=184113&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets.cpp (original)
+++ cfe/trunk/lib/Basic/Targets.cpp Mon Jun 17 15:00:15 2013
@@ -3534,7 +3534,9 @@ class ARMTargetInfo : public TargetInfo
     // the kernel which on armv6 and newer uses ldrex and strex. The net result
     // is that if we assume the kernel is at least as recent as the hardware,
     // it is safe to use atomic instructions on armv6 and newer.
-    if (T.getOS() != llvm::Triple::Linux && T.getOS() != llvm::Triple::FreeBSD)
+    if (T.getOS() != llvm::Triple::Linux &&
+        T.getOS() != llvm::Triple::FreeBSD &&
+        T.getOS() != llvm::Triple::Bitrig)
       return false;
     StringRef ArchName = T.getArchName();
     if (T.getArch() == llvm::Triple::arm) {

Modified: cfe/trunk/test/CodeGen/linux-arm-atomic.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/linux-arm-atomic.c?rev=184113&r1=184112&r2=184113&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/linux-arm-atomic.c (original)
+++ cfe/trunk/test/CodeGen/linux-arm-atomic.c Mon Jun 17 15:00:15 2013
@@ -2,6 +2,7 @@
 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv6-unknown-linux | FileCheck %s
 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=thumbv7-unknown-linux | FileCheck %s
 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv6-unknown-freebsd | FileCheck %s
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv6-unknown-bitrig | FileCheck %s
 
 typedef int _Atomic_word;
 _Atomic_word exchange_and_add(volatile _Atomic_word *__mem, int __val) {