* config/avr/avr-arch.h (avr_mcu_t): Add dev_attribute field to have device
	specific ISA/ feature information. Remove short_sp and errata_skip ds.
	Add avr_device_specific_features enum to have device specific info.
	* config/avr/avr-c.c (avr_cpu_cpp_builtins): use dev_attribute to check
	errata_skip. Add __AVR_ISA_RMW__ builtin macro if RMW ISA available.
	* config/avr/avr-devices.c (avr_mcu_types): Update AVR_MCU macro for
	updated device specific info.
	* config/avr/avr-mcus.def: Merge device specific details to
	dev_attribute field.
	* config/avr/avr.c (avr_2word_insn_p): use dev_attribute field to check
	errata_skip.
	* config/avr/avr.h (AVR_HAVE_8BIT_SP): same for short sp info.
	* config/avr/driver-avr.c (avr_device_to_as): Pass -mrmw option to
	assembler if RMW isa supported by current device.
	* config/avr/genmultilib.awk: Update as device info structure changed.
	* doc/invoke.texi: Add info for __AVR_ISA_RMW__ builtin macro

	* gcc.target/avr/dev-specific-rmw.c: New test.
	


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@209141 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]: Added Break handler support

Break handler is used to support a normal hardware break.
This is similar to interrupt_handler except that RTBD should be used instead of RTID.

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>
[LOCAL]: For dejagnu static testing on qemu, suppress warnings

about multiple definitions from the test function and libc in line
with method used by powerpc. Dynamic linking and using a qemu binary
which understands sysroot resolves all test failures with builtins

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[LOCAL]: Testsuite - explicitly add -fivopts for tests that depend on it

(test gcc/testsuite/gcc.dg/tree-ssa/ivopts-lt.c doesnt exist in 4.6 branch)

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[LOCAL]: Quick fail g++.dg/opt/memcpy1.C

This particular testcase fails with a timeout. Instead, fail it
at compile-time for microblaze. This speeds up the testsuite without
removing it from the FAIL reports.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[LOCAL]: Testsuite - builtins tests require fpic

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