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
[Patch, microblaze]: Add optimized lshrsi3

When barrel shifter is not present, the immediate value
is greater than #5 and optimization is -OS, the
compiler will generate shift operation using loop.

Changelog

2013-11-26  David Holsgrove <david.holsgrove@xilinx.com>

 * gcc/config/microblaze/microblaze.md: Add size optimized lshrsi3 insn

ChangeLog/testsuite

2014-02-12  David Holsgrove <david.holsgrove@xilinx.com>

 * gcc/testsuite/gcc.target/microblaze/others/lshrsi_Os_1.c: New test.

Signed-off-by:Nagaraju <nmekala@xilix.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, microblaze]: Add INIT_PRIORITY support

Added TARGET_ASM_CONSTRUCTOR and TARGET_ASM_DESTRUCTOR macros.

These macros allows users to control the order of initialization
of objects defined at namespace scope with the init_priority
attribute by specifying a relative priority, a constant integral
expression currently bounded between 101 and 65535 inclusive.

Lower numbers indicate a higher priority.

Changelog

2013-11-26  Nagaraju Mekala <nagaraju.mekala@xilinx.com>

 * gcc/config/microblaze/microblaze.c: Add microblaze_asm_constructor,
   microblaze_asm_destructor. Define TARGET_ASM_CONSTRUCTOR and
   TARGET_ASM_DESTRUCTOR.

Signed-off-by:nagaraju <nmekala@xilix.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, microblaze]: Add supervisory call support

A function can be executed in supervisory mode when a function
is declared with svc_handler attribute.

If a function with svc_handler is called, the processor switches
to supervisory mode and executes. After executing the function
it returns to normal mode.

Same feature can also be invoked with svc_table_handler attribute
but this attribute will accept a service ID, to be used for
calling the function.

Signed-off-by:nagaraju <nmekala@xilix.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, microblaze]: Increase max alignment to please the testsuite

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[Patch, microblaze]: Disable fivopts by default

Turn off ivopts by default. Interferes with cse.

Changelog

2013-03-18  Edgar E. Iglesias <edgar.iglesias@xilinx.com>

 * gcc/common/config/microblaze/microblaze-common.c
   (microblaze_option_optimization_table): Disable fivopts by default.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, microblaze]: Use bralid for profiler calls

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[Patch, microblaze]: Enable DWARF exception handling support.

Changelog

2013-03-18  Edgar E. Iglesias <edgar.iglesias@xilinx.com>
            David Holsgrove <david.holsgrove@xilinx.com>

 * common/config/microblaze/microblaze-common.c: Remove
   TARGET_EXCEPT_UNWIND_INFO definition.
 * config/microblaze/microblaze-protos.h: Add
   microblaze_eh_return prototype.
 * gcc/config/microblaze/microblaze.c: (microblaze_must_save_register,
   microblaze_expand_epilogue, microblaze_return_addr): Handle
   calls_eh_return
   (microblaze_eh_return): New function.
 * gcc/config/microblaze/microblaze.h: Define RETURN_ADDR_OFFSET,
   EH_RETURN_DATA_REGNO, MB_EH_STACKADJ_REGNUM, EH_RETURN_STACKADJ_RTX,
   ASM_PREFERRED_EH_DATA_FORMAT
 * gcc/config/microblaze/microblaze.md: Define eh_return pattern.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[Patch, microblaze]: Fixed missing save of r18 in fast_interrupt.

Register 18 is used as a clobber register, and must be stored when
entering a fast_interrupt. Before this fix, register 18 was only
saved if it was used directly in the interrupt function.

However, if the fast_interrupt function called a function that used
r18, the register would not be saved, and thus be mangled
upon returning from the interrupt.

Changelog

2014-02-27  Klaus Petersen <klauspetersen@gmail.com>

 * gcc/config/microblaze/microblaze.c: Check for fast_interrupt in
   microblaze_must_save_register.

Signed-off-by: Klaus Petersen <klauspetersen@gmail.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, testsuite]: Add MicroBlaze to check_profiling_available

Testsuite, add microblaze*-*-* target in check_profiling_available
inline with other archs setting profiling_available_saved to 0

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, testsuite]: Add MicroBlaze pattern for dg-function-on-line

Add MicroBlaze specific pattern for checking line number and
generation of funtion in dg-function-on-line, in line with
mips method.

Changelog/testsuite

2014-02-13  David Holsgrove <david.holsgrove@xilinx.com>

 * gcc/testsuite/lib/scanasm.exp (dg-function-on-line): Add
   MicroBlaze specific pattern.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, testsuite]: Allow MicroBlaze .weakext pattern in regex match

Extend regex pattern to include optional ext at the end of
.weak to match the MicroBlaze weak label .weakext

ChangeLog/testsuite

2014-02-14  David Holsgrove <david.holsgrove@xilinx.com>

 * gcc/testsuite/g++.dg/abi/rtti3.C: Extend scan-assembler
   pattern to take optional ext after .weak.
 * gcc/testsuite/g++.dg/abi/thunk4.C: Likewise.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, testsuite]: Update MicroBlaze strings test

for new scan-assembly output resulting in use of $LC label

ChangeLog/testsuite

2014-02-14  David Holsgrove <david.holsgrove@xilinx.com>

 * gcc/testsuite/gcc.target/microblaze/others/strings1.c: Update
   to include $LC label.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, testsuite]: Add MicroBlaze to target-supports for atomic builtin tests

MicroBlaze added to supported targets for atomic builtin tests.

Changelog/testsuite

2014-02-14  David Holsgrove <david.holsgrove@xilinx.com>

 * gcc/testsuite/lib/target-supports.exp: Add microblaze to
   check_effective_target_sync_int_long.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>