PR go/61498
runtime: Always set gcnext_sp to pointer-aligned address.

The gcnext_sp field is only used on systems that do not use
split stacks.  It marks the bottom of the stack for the
garbage collector.  This change makes sure that the stack
bottom is always aligned to a pointer value.

Previously the garbage collector would align all the addresses
that it scanned, but it now expects them to be aligned before
scanning.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211639 138bc75d-0d04-0410-961f-82ee72b054a4
	PR go/52583
runtime: Stop backtrace at a few recognized functions.

On x86_64 Solaris the makecontext function does not properly
indicate that it is at the top of the stack.  Attempting to
unwind the stack past a call to makecontext tends to crash.
This patch changes libgo to look for certain functions that
are always found at the top of the stack, and to stop
unwinding when it reaches one of those functions.  There is
never anything interesting past these functions--that is,
there is never any code written by the user.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211640 138bc75d-0d04-0410-961f-82ee72b054a4
2014-06-13  Martin Jambor  <mjambor@suse.cz>

	PR ipa/61186
	* ipa-devirt.c (possible_polymorphic_call_targets): Store NULL to
	cache_token if returning early.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211641 138bc75d-0d04-0410-961f-82ee72b054a4
Allow overriding the libiberty used for building the LTO plugin.

	lto-plugin/
	* configure.ac (--with-libiberty): New configure option.
	* configure: Regenerate.
	* Makefile.am (libiberty, libiberty_noasan, libiberty_pic): New
	variables.
	(liblto_plugin_la_LIBADD, liblto_plugin_la_LDFLAGS)
	(liblto_plugin_la_DEPENDENCIES): Use them.
	* Makefile.in: Regenerate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211642 138bc75d-0d04-0410-961f-82ee72b054a4
Allow for overriding a module's srcdir.

	* Makefile.tpl (configure-[+prefix+][+module+])
	(configure-stage[+id+]-[+prefix+][+module+]): If specified, use
	"module_srcdir" instead of "module" for locating a module's srcdir.
	* Makefile.in: Regenerate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211643 138bc75d-0d04-0410-961f-82ee72b054a4
Non-host system configuration for linker plugins.

	* configure.ac (--enable-linker-plugin-configure-flags)
	(--enable-linker-plugin-flags): New flags.
	(configdirs): Conditionally add libiberty-linker-plugin.
	* configure: Regenerate.
	* Makefile.def (host_modules): Add libiberty-linker-plugin.
	(host_modules) <lto-plugin>: Pay attention to
	@extra_linker_plugin_flags@ and
	@extra_linker_plugin_configure_flags@.
	(all-lto-plugin): Also depend on all-libiberty-linker-plugin.
	* Makefile.in: Regenerate.
	gcc/
	* doc/install.texi (--enable-linker-plugin-configure-flags)
	(--enable-linker-plugin-flags): Document new flags.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211644 138bc75d-0d04-0410-961f-82ee72b054a4
	* config-ml.in: Robustify ac_configure_args parsing.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211645 138bc75d-0d04-0410-961f-82ee72b054a4