2007-05-21  Paolo Bonzini  <bonzini@gnu.org>
            Paolo Carlini  <pcarlini@suse.de>
	    Uros Bizjak  <ubizjak@gmail.com>

	* c-cppbuiltin.c (c_cpp_builtins): Define
	__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1, __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2,
	__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4, __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8,
	__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16, if appropriate.
	* doc/cpp.texi ([Standard Predefined Macros]): Document.

2007-05-21  Paolo Bonzini  <bonzini@gnu.org>
            Paolo Carlini  <pcarlini@suse.de>
	    Uros Bizjak  <ubizjak@gmail.com>

	* gcc.dg/gcc-have-sync-compare-and-swap.c,
	gcc.target/i386/gcc-have-sync-compare-and-swap-1.c,
	gcc.target/i386/gcc-have-sync-compare-and-swap-2.c,
	gcc.target/i386/gcc-have-sync-compare-and-swap-3.c,
	gcc.target/i386/gcc-have-sync-compare-and-swap-4.c,
	New testcases.

Co-Authored-By: Paolo Carlini <pcarlini@suse.de>
Co-Authored-By: Uros Bizjak <ubizjak@gmail.com>

From-SVN: r124926