r239323 - in /trunk/gcc: ChangeLog common.opt c...

[marxin@gcc.gnu.org]

Author: marxin
Date: Wed Aug 10 13:11:42 2016
New Revision: 239323

URL: https://gcc.gnu.org/viewcvs?rev=239323&root=gcc&view=rev
Log:
Cherry-pick fprofile-generate-atomic from google/gcc-4_9

	Cherry picked (and modified) from google-4_7 branch
	2012-12-26  Rong Xu  <xur@google.com>
	* common.opt (fprofile-update): Add new flag.
	* coretypes.h: Define enum profile_update.
	* doc/invoke.texi: Document -fprofile-update.
	* gcov-io.h: Declare GCOV_TYPE_ATOMIC_FETCH_ADD and
	GCOV_TYPE_ATOMIC_FETCH_ADD_FN.
	* tree-profile.c (gimple_init_edge_profiler): Generate
	also atomic profiler update.
	(gimple_gen_edge_profiler): Likewise.
	* g++.dg/gcov/gcov-threads-1.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/gcov/gcov-threads-1.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/common.opt
    trunk/gcc/coretypes.h
    trunk/gcc/doc/invoke.texi
    trunk/gcc/gcov-io.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-profile.c