r194725 - in /branches/google/gcc-4_7: gcc/comm...

[xur@gcc.gnu.org]

Author: xur
Date: Wed Dec 26 19:46:45 2012
New Revision: 194725

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194725
Log:
2012-12-26  Rong Xu  <xur@google.com>

	* libgcc/libgcov.c (__gcov_one_value_profiler_body_atomic): New
        function. Atomic update profile counters.
	(__gcov_one_value_profiler_atomic): Ditto.
	(__gcov_indirect_call_profiler_atomic): Ditto.
	* gcc/gcov-io.h: Macros for atomic update.
	* gcc/common.opt: New option.
	* gcc/tree-profile.c (gimple_init_edge_profiler): Atomic
        update profile counters.
	(gimple_gen_edge_profiler): Ditto.

Modified:
    branches/google/gcc-4_7/gcc/common.opt
    branches/google/gcc-4_7/gcc/gcov-io.h
    branches/google/gcc-4_7/gcc/tree-profile.c
    branches/google/gcc-4_7/libgcc/libgcov.c