On 29/11/12 15:42, Yvan Roux wrote:
Hi,on ARMv7, the code generated for the __atomic_load builtins in the __ATOMIC_ACQUIRE memory model, puts a memory barrier before the load, whereas the semantic of the acquire memory model implies a barrier after. The issue seems to be in expand_atomic_load which puts a memory fence before the load in any memory model. The attached patch fixes the problem. Thanks, Yvan
The same issue exists in the 4.7 branch. Can the fix be back ported? /Marcus
