[cxx-mem-model] Change library call for __atomic_op_fetch routines

[Richard Henderson]

On 10/25/2011 06:45 PM, Andrew MacLeod wrote:
> 	* builtins.c (expand_builtin_atomic_fetch_op): External calls for
> 	'op_fetch' builtins need to instead call 'fetch_op' externals and issue 
> 	correction code.
> 	(expand_builtin): Provide proper builtin name for external call and
> 	ignored flag to expand_builtin_atomic_fetch_op.

Looks ok.

> !    resolved to an instriction sequence.  */

"instruction"

> !   gcc_assert (TREE_OPERAND (addr, 0) == fndecl);
> !   TREE_OPERAND (addr, 0) = builtin_decl_explicit(ext_call);

I do wonder if we ought not put the original back after the expand.


r~