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Author SHA1 Message Date
Tim Northover e0482760fc Fix test on release builds. 
Unfortunately I don't think there's a good way to validate branch targets on
release builds. Fortunately it's a minor part of this test (and based on
generic code) so I don't mind dropping it.

llvm-svn: 186398
 2013-07-16 10:22:19 +00:00
Tim Northover 6aacd49094 ARM: implement low-level intrinsics for the atomic exclusive operations. 
This adds three overloaded intrinsics to Clang:
    T __builtin_arm_ldrex(const volatile T *addr)
    int __builtin_arm_strex(T val, volatile T *addr)
    void __builtin_arm_clrex()

The intent is that these do what users would expect when given most sensible
types. Currently, "sensible" translates to ints, floats and pointers.

llvm-svn: 186394
 2013-07-16 09:47:53 +00:00