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55 Commits

Author SHA1 Message Date
David Chisnall
db365f38ea Call out to GCC-compatible runtime functions for atomic ops that we can't use 
LLVM intrinsics for.

I have an implementation of these functions, which wants to go in a libgcc_s
equivalent in compiler-rt.  It's currently here:

http://people.freebsd.org/~theraven/atomic.c

It will be committed to compiler-rt as soon as I work out where would be a
sensible place to put it...

llvm-svn: 153666
 2012-03-29 18:01:11 +00:00
Eli Friedman
cc66a2b067 Add missing newline. 
llvm-svn: 142285
 2011-10-17 21:48:31 +00:00
Eli Friedman
a4c2602b71 Initial implementation of __atomic_is_lock_free. The input is the size of an atomic type rather than an atomic type itself just to save some implementation pain; I can change that if it seems worthwhile. 
I think this is the last hook needed for <atomic> besides defines for ATOMIC_CHAR_LOCK_FREE and friends.

llvm-svn: 142281
 2011-10-17 21:44:23 +00:00
Eli Friedman
4b72fddd99 Misc fixes for atomics. Biggest fix is doing alignment correctly for _Atomic types. 
llvm-svn: 142002
 2011-10-14 20:59:01 +00:00
Eli Friedman
df14b3a837 Initial implementation of __atomic_* (everything except __atomic_is_lock_free). 
llvm-svn: 141632
 2011-10-11 02:20:01 +00:00