gcc/

	Backport from trunk r240504.
	2016-09-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* tree.h (memmodel_from_int, memmodel_base, is_mm_relaxed,
	is_mm_consume, is_mm_acquire, is_mm_release, is_mm_acq_rel,
	is_mm_seq_cst, is_mm_sync): Move to ...
	* memmodel.h: This.  New file.
	* builtins.c: Include memmodel.h.
	* optabs.c: Likewise.
	* tsan.c: Likewise.
	* config/aarch64/aarch64.c: Likewise.
	* config/alpha/alpha.c: Likewise.
	* config/arm/arm.c: Likewise.
	* config/i386/i386.c: Likewise.
	* config/ia64/ia64.c: Likewise.
	* config/mips/mips.c: Likewise.
	* config/rs6000/rs6000.c: Likewise.
	* config/sparc/sparc.c: Likewise.
	* genconditions.c: Include memmodel.h in generated file.
	* genemit.c: Likewise.
	* genoutput.c: Likewise.
	* genpeep.c: Likewise.
	* genpreds.c: Likewise.
	* genrecog.c: Likewise.

	gcc/c-family/
	Backport from trunk r240504.
	2016-09-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* c-common.c: Include memmodel.h.

	gcc/
	Backport from trunk r241507.
	2016-10-25  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/constraints.md (Q constraint): Document its use for
	Thumb-1.
	(Pf constraint): New constraint for relaxed, consume or relaxed memory
	models.
	* config/arm/sync.md (atomic_load<mode>): Add new ARMv8-M Baseline only
	alternatives to allow any register when memory model matches Pf and
	thus lda is used, but only low registers otherwise.  Use unpredicated
	output template for Thumb-1 targets.
	(atomic_store<mode>): Likewise for stl.
	(arm_load_exclusive<mode>): Add new ARMv8-M Baseline only alternative
	whose output template does not have predication.
	(arm_load_acquire_exclusive<mode>): Likewise.
	(arm_load_exclusivesi): Likewise.
	(arm_load_acquire_exclusivesi): Likewise.
	(arm_store_release_exclusive<mode>): Likewise.
	(arm_store_exclusive<mode>): Use unpredicated output template for
	Thumb-1 targets.

	gcc/
	Backport from trunk r241577.
	2016-10-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.c (arm_expand_compare_and_swap): Add new bdst local
	variable.  Add the new parameter to the insn generator.  Set that
	parameter to be CC flag for 32-bit targets, bval otherwise.  Set the
	return value from the negation of that parameter for Thumb-1, keeping
	the logic unchanged otherwise except for using bdst as the destination
	register of the compare_and_swap insn.
	(arm_split_compare_and_swap): Add explanation about how is the value
	returned to the function comment.  Rename scratch variable to
	neg_bval.  Adapt initialization of variables holding operands to the
	new operand numbers.  Use return register to hold result of store
	exclusive for Thumb-1, scratch register otherwise.  Construct the
	appropriate cbranch for Thumb-1 targets, keeping the logic unchanged
	for 32-bit targets.  Guard Z flag setting to restrict to 32bit targets.
	Use gen_cbranchsi4 rather than hand-written conditional branch to loop
	for strongly ordered compare_and_swap.
	* config/arm/predicates.md (cc_register_operand): New predicate.
	* config/arm/sync.md (atomic_compare_and_swap<mode>_1): Use a
	match_operand with the new predicate to accept either the CC flag or a
	destination register for the boolean return value, restricting it to
	CC flag only via constraint.  Adapt operand numbers accordingly.

	gcc/
	Backport from trunk r241578.
	2016-10-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/sync.md (atomic_compare_and_swap<mode>_1): Add new ARMv8-M
	Baseline only alternatives to (i) hold store atomic success value in a
	return register rather than a scratch register, (ii) use a low register
	for it and to (iii) ensure the cbranchsi insn generated by the split
	respect the constraints of Thumb-1 cbranchsi4_insn and
	cbranchsi4_scratch.
	* config/arm/thumb1.md (cbranchsi4_insn): Add comment to indicate
	constraints must match those in atomic_compare_and_swap.
	(cbranchsi4_scratch): Likewise.

	gcc/
	Backport from trunk r241614.
	2016-10-27  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.c (arm_split_atomic_op): Add function comment.  Add
	logic to to decide whether to copy over old value to register for new
	value.
	* config/arm/sync.md: Add comments explaning why mode and code
	attribute are not defined in iterators.md
	(thumb1_atomic_op_str): New code attribute.
	(thumb1_atomic_newop_str): Likewise.
	(thumb1_atomic_fetch_op_str): Likewise.
	(thumb1_atomic_fetch_newop_str): Likewise.
	(thumb1_atomic_fetch_oldop_str): Likewise.
	(atomic_exchange<mode>): Add new ARMv8-M Baseline only alternatives to
	mirror the more restrictive constraints of the Thumb-1 insns after
	split compared to Thumb-2 counterpart insns.
	(atomic_<sync_optab><mode>): Likewise.  Add comment to keep constraints
	in sync with non atomic version.
	(atomic_nand<mode>): Likewise.
	(atomic_fetch_<sync_optab><mode>): Likewise.
	(atomic_fetch_nand<mode>): Likewise.
	(atomic_<sync_optab>_fetch<mode>): Likewise.
	(atomic_nand_fetch<mode>): Likewise.
	* config/arm/thumb1.md (thumb1_addsi3): Add comment to keep contraint
	in sync with atomic version.
	(thumb1_subsi3_insn): Likewise.
	(thumb1_andsi3_insn): Likewise.
	(thumb1_iorsi3_insn): Likewise.
	(thumb1_xorsi3_insn): Likewise.

	gcc/
	Backport from trunk r241615.
	2016-10-27  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.h (TARGET_HAVE_LDREX): Define for ARMv8-M Baseline.
	(TARGET_HAVE_LDREXBH): Likewise.
	(TARGET_HAVE_LDACQ): Likewise.

	gcc/testsuite/
	Backport from trunk r241615.
	2016-10-27  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/atomic-comp-swap-release-acquire-3.c: New test.
	* gcc.target/arm/atomic-op-acq_rel-3.c: Likewise.
	* gcc.target/arm/atomic-op-acquire-3.c: Likewise.
	* gcc.target/arm/atomic-op-char-3.c: Likewise.
	* gcc.target/arm/atomic-op-consume-3.c: Likewise.
	* gcc.target/arm/atomic-op-int-3.c: Likewise.
	* gcc.target/arm/atomic-op-relaxed-3.c: Likewise.
	* gcc.target/arm/atomic-op-release-3.c: Likewise.
	* gcc.target/arm/atomic-op-seq_cst-3.c: Likewise.
	* gcc.target/arm/atomic-op-short-3.c: Likewise.

	gcc/
	Backport from trunk r241848.
	2016-11-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm-arches.def (armv8-m.base): Set Cortex-M23 as
	representative core for this architecture.
	* config/arm/arm-cores.def (cortex-m23): Define new processor.
	* config/arm/arm-tables.opt: Regenerate.
	* config/arm/arm-tune.md: Likewise.
	* config/arm/arm.c (arm_v6m_tune): Add Cortex-M23 to the list of cores
	this tuning parameters apply to in the comment.
	* config/arm/bpabi.h (BE8_LINK_SPEC): Add Cortex-M23 to the list of
	valid -mcpu options.
	* doc/invoke.texi (ARM Options): Document new Cortex-M23 processor.

	gcc/
	Backport from trunk r241849.
	2016-11-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm-arches.def (armv8-m.main+dsp): Set Cortex-M33 as
	representative core for this architecture.
	* config/arm/arm-cores.def (cortex-m33): Define new processor.
	* config/arm/arm-tables.opt: Regenerate.
	* config/arm/arm-tune.md: Likewise.
	* config/arm/bpabi.h (BE8_LINK_SPEC): Add Cortex-M33 to the list of
	valid -mcpu options.
	* doc/invoke.texi (ARM Options): Document new Cortex-M33 processor.

	gcc/
	Backport from trunk r242596.
	2016-11-18  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm-protos.h (FL_NONE, FL_ANY, FL_CO_PROC, FL_ARCH3M,
	FL_MODE26, FL_MODE32, FL_ARCH4, FL_ARCH5, FL_THUMB, FL_LDSCHED,
	FL_STRONG, FL_ARCH5E, FL_XSCALE, FL_ARCH6, FL_VFPV2, FL_WBUF,
	FL_ARCH6K, FL_THUMB2, FL_NOTM, FL_THUMB_DIV, FL_VFPV3, FL_NEON,
	FL_ARCH7EM, FL_ARCH7, FL_ARM_DIV, FL_ARCH8, FL_CRC32, FL_SMALLMUL,
	FL_NO_VOLATILE_CE, FL_IWMMXT, FL_IWMMXT2, FL_ARCH6KZ, FL2_ARCH8_1,
	FL2_ARCH8_2, FL2_FP16INST): Reindent comment, add final dot when
	missing and make value unsigned.
	(arm_feature_set): Use unsigned entries instead of unsigned long.

	gcc/
	Backport from trunk r242597.
	2016-11-18  Terry Guo  <terry.guo@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* common/config/arm/arm-common.c (arm_target_thumb_only): New function.
	* config/arm/arm-opts.h: Include arm-flags.h.
	(struct arm_arch_core_flag): Define.
	(arm_arch_core_flags): Define.
	* config/arm/arm-protos.h: Include arm-flags.h
	(FL_NONE, FL_ANY, FL_CO_PROC, FL_ARCH3M, FL_MODE26, FL_MODE32,
	FL_ARCH4, FL_ARCH5, FL_THUMB, FL_LDSCHED, FL_STRONG, FL_ARCH5E,
	FL_XSCALE, FL_ARCH6, FL_VFPV2, FL_WBUF, FL_ARCH6K, FL_THUMB2, FL_NOTM,
	FL_THUMB_DIV, FL_VFPV3, FL_NEON, FL_ARCH7EM, FL_ARCH7, FL_ARM_DIV,
	FL_ARCH8, FL_CRC32, FL_SMALLMUL, FL_NO_VOLATILE_CE, FL_IWMMXT,
	FL_IWMMXT2, FL_ARCH6KZ, FL2_ARCH8_1, FL2_ARCH8_2, FL2_FP16INST,
	FL_TUNE, FL_FOR_ARCH2, FL_FOR_ARCH3, FL_FOR_ARCH3M, FL_FOR_ARCH4,
	FL_FOR_ARCH4T, FL_FOR_ARCH5, FL_FOR_ARCH5T, FL_FOR_ARCH5E,
	FL_FOR_ARCH5TE, FL_FOR_ARCH5TEJ, FL_FOR_ARCH6, FL_FOR_ARCH6J,
	FL_FOR_ARCH6K, FL_FOR_ARCH6Z, FL_FOR_ARCH6ZK, FL_FOR_ARCH6KZ,
	FL_FOR_ARCH6T2, FL_FOR_ARCH6M, FL_FOR_ARCH7, FL_FOR_ARCH7A,
	FL_FOR_ARCH7VE, FL_FOR_ARCH7R, FL_FOR_ARCH7M, FL_FOR_ARCH7EM,
	FL_FOR_ARCH8A, FL2_FOR_ARCH8_1A, FL2_FOR_ARCH8_2A, FL_FOR_ARCH8M_BASE,
	FL_FOR_ARCH8M_MAIN, arm_feature_set, ARM_FSET_MAKE,
	ARM_FSET_MAKE_CPU1, ARM_FSET_MAKE_CPU2, ARM_FSET_CPU1, ARM_FSET_CPU2,
	ARM_FSET_EMPTY, ARM_FSET_ANY, ARM_FSET_HAS_CPU1, ARM_FSET_HAS_CPU2,
	ARM_FSET_HAS_CPU, ARM_FSET_ADD_CPU1, ARM_FSET_ADD_CPU2,
	ARM_FSET_DEL_CPU1, ARM_FSET_DEL_CPU2, ARM_FSET_UNION, ARM_FSET_INTER,
	ARM_FSET_XOR, ARM_FSET_EXCLUDE, ARM_FSET_IS_EMPTY,
	ARM_FSET_CPU_SUBSET): Move to ...
	* config/arm/arm-flags.h: This new file.
	* config/arm/arm.h (TARGET_MODE_SPEC_FUNCTIONS): Define.
	(EXTRA_SPEC_FUNCTIONS): Add TARGET_MODE_SPEC_FUNCTIONS to its value.
	(TARGET_MODE_SPECS): Define.
	(DRIVER_SELF_SPECS): Add TARGET_MODE_SPECS to its value.

	gcc/testsuite/
	Backport from trunk r242597.
	2016-11-18  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/optional_thumb-1.c: New test.
	* gcc.target/arm/optional_thumb-2.c: New test.
	* gcc.target/arm/optional_thumb-3.c: New test.

	gcc/
	Backport from trunk r242696.
	2016-11-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config.gcc: Allow new rmprofile value for configure option
	--with-multilib-list.
	* config/arm/t-rmprofile: New file.
	* doc/install.texi (--with-multilib-list): Document new rmprofile value
	for ARM.

	gcc/testsuite/
	Backport from trunk r243013.
	2016-11-30  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* lib/target-supports.exp (add_options_for_arm_arch_v6m): Add
	-mfloat-abi=soft option.
	(add_options_for_arm_arch_v8m_base): Likewise.  Reindent containing
	foreach loop.

	gcc/
	Backport from trunk r243015.
	2016-11-30  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/t-rmprofile: Add mappings for Cortex-M23 and Cortex-M33.

	gcc/
	Backport from trunk r243187.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config.gcc (extra_headers): Added arm_cmse.h.
	* config/arm/arm-arches.def (ARM_ARCH):
	(armv8-m): Add FL2_CMSE.
	(armv8-m.main): Likewise.
	(armv8-m.main+dsp): Likewise.
	* config/arm/arm-c.c
	(arm_cpu_builtins): Added __ARM_FEATURE_CMSE macro.
	* config/arm/arm-flags.h: Define FL2_CMSE.
	* config/arm.c (arm_arch_cmse): New.
	(arm_option_override): New error for unsupported cmse target.
	* config/arm/arm.h (arm_arch_cmse): New.
	* config/arm/arm.opt (mcmse): New.
	* config/arm/arm_cmse.h: New file.
	* doc/invoke.texi (ARM Options): Add -mcmse.
	* doc/sourcebuild.texi (arm_cmse_ok): Add new effective target.
	* doc/extend.texi: Add ARMv8-M Security Extensions entry.

	gcc/testsuite/
	Backport from trunk r243187.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/cmse/cmse.exp: New.
	* gcc.target/arm/cmse/cmse-1.c: New.
	* gcc.target/arm/cmse/cmse-12.c: New.
	* lib/target-supports.exp
	(check_effective_target_arm_cmse_ok): New.

	libgcc/
	Backport from trunk r243187.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/t-arm (HAVE_CMSE): New.
	* config/arm/cmse.c: New.

	gcc/
	Backport from trunk r243188.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.c (arm_handle_cmse_nonsecure_entry): New.
	(arm_attribute_table): Added cmse_nonsecure_entry
	(arm_compute_func_type): Handle cmse_nonsecure_entry.
	(cmse_func_args_or_return_in_stack): New.
	(arm_handle_cmse_nonsecure_entry): New.
	* config/arm/arm.h (ARM_FT_CMSE_ENTRY): New macro define.
	(IS_CMSE_ENTRY): Likewise.
	* doc/extend.texi (ARM ARMv8-M Security Extensions): New attribute.

	gcc/testsuite/
	Backport from trunk r243188.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/cmse/cmse-3.c: New.

	gcc/
	Backport from trunk r243189.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.c (use_return_insn): Change to return with  bxns
	when cmse_nonsecure_entry.
	(output_return_instruction): Likewise.
	(arm_output_function_prologue): Likewise.
	(thumb_pop): Likewise.
	(thumb_exit): Likewise.
	(thumb2_expand_return): Assert that entry functions always have simple
	returns.
	(arm_expand_epilogue): Handle entry functions.
	(arm_function_ok_for_sibcall): Disable sibcall for entry functions.
	(arm_asm_declare_function_name): New.
	* config/arm/arm-protos.h (arm_asm_declare_function_name): New.
	* config/arm/elf.h (ASM_DECLARE_FUNCTION_NAME): Redefine to
	use arm_asm_declare_function_name.

	gcc/testsuite/
	Backport from trunk r243189.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/cmse/cmse-4.c: New.
	* gcc.target/arm/cmse/cmse-9.c: New.
	* gcc.target/arm/cmse/cmse-10.c: New.

	gcc/
	Backport from trunk r243190.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.c (output_return_instruction): Clear
	registers.
	(thumb2_expand_return): Likewise.
	(thumb1_expand_epilogue): Likewise.
	(thumb_exit): Likewise.
	(arm_expand_epilogue): Likewise.
	(cmse_nonsecure_entry_clear_before_return): New.
	(comp_not_to_clear_mask_str_un): New.
	(compute_not_to_clear_mask): New.
	* config/arm/thumb1.md (*epilogue_insns): Change length attribute.
	* config/arm/thumb2.md (*thumb2_return): Disable for
	cmse_nonsecure_entry functions.
	(*thumb2_cmse_entry_return): Duplicate thumb2_return pattern for
	cmse_nonsecure_entry functions.

	gcc/testsuite/
	Backport from trunk r243190.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/cmse/cmse.exp: Test different multilibs separate.
	* gcc.target/arm/cmse/struct-1.c: New.
	* gcc.target/arm/cmse/bitfield-1.c: New.
	* gcc.target/arm/cmse/bitfield-2.c: New.
	* gcc.target/arm/cmse/bitfield-3.c: New.
	* gcc.target/arm/cmse/baseline/cmse-2.c: New.
	* gcc.target/arm/cmse/baseline/softfp.c: New.
	* gcc.target/arm/cmse/mainline/soft/cmse-5.c: New.
	* gcc.target/arm/cmse/mainline/hard/cmse-5.c: New.
	* gcc.target/arm/cmse/mainline/hard-sp/cmse-5.c: New.
	* gcc.target/arm/cmse/mainline/softfp/cmse-5.c: New.
	* gcc.target/arm/cmse/mainline/softfp-sp/cmse-5.c: New.

	gcc/
	Backport from trunk r243191.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.c (gimplify.h): New include.
	(arm_handle_cmse_nonsecure_call): New.
	(arm_attribute_table): Added cmse_nonsecure_call.
	(arm_comp_type_attributes): Deny compatibility of function types
	with without the cmse_nonsecure_call attribute.
	* doc/extend.texi (ARM ARMv8-M Security Extensions): New attribute.

	gcc/testsuite/
	Backport from trunk r243191.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/cmse/cmse-3.c: Add tests.
	* gcc.target/arm/cmse/cmse-4.c: Add tests.
	* gcc.target/arm/cmse/cmse-15.c: New.

	gcc/
	Backport from trunk r243192.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm.c (detect_cmse_nonsecure_call): New.
	(cmse_nonsecure_call_clear_caller_saved): New.
	(arm_reorg): Use cmse_nonsecure_call_clear_caller_saved.
	(arm_function_ok_for_sibcall): Disable sibcalls for
	cmse_nonsecure_call.
	* config/arm/arm-protos.h (detect_cmse_nonsecure_call): New.
	* config/arm/arm.md (call): Handle cmse_nonsecure_entry.
	(call_value): Likewise.
	(nonsecure_call_internal): New.
	(nonsecure_call_value_internal): New.
	* config/arm/thumb1.md (*nonsecure_call_reg_thumb1_v5): New.
	(*nonsecure_call_value_reg_thumb1_v5): New.
	* config/arm/thumb2.md (*nonsecure_call_reg_thumb2): New.
	(*nonsecure_call_value_reg_thumb2): New.
	* config/arm/unspecs.md (UNSPEC_NONSECURE_MEM): New.

	gcc/testsuite/
	Backport from trunk r243192.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/cmse/cmse.exp: Run tests in mainline dir.
	* gcc.target/arm/cmse/cmse-9.c: Added some extra tests.
	* gcc.target/arm/cmse/cmse-14.c: New.
	* gcc.target/arm/cmse/baseline/bitfield-4.c: New.
	* gcc.target/arm/cmse/baseline/bitfield-5.c: New.
	* gcc.target/arm/cmse/baseline/bitfield-6.c: New.
	* gcc.target/arm/cmse/baseline/bitfield-7.c: New.
	* gcc.target/arm/cmse/baseline/bitfield-8.c: New.
	* gcc.target/arm/cmse/baseline/bitfield-9.c: New.
	* gcc.target/arm/cmse/baseline/bitfield-and-union-1.c: New.
	* gcc.target/arm/cmse/baseline/cmse-11.c: New.
	* gcc.target/arm/cmse/baseline/cmse-13.c: New.
	* gcc.target/arm/cmse/baseline/cmse-6.c: New.
	* gcc.target/arm/cmse/baseline/union-1.c: New.
	* gcc.target/arm/cmse/baseline/union-2.c: New.
	* gcc.target/arm/cmse/mainline/bitfield-4.c: New.
	* gcc.target/arm/cmse/mainline/bitfield-5.c: New.
	* gcc.target/arm/cmse/mainline/bitfield-6.c: New.
	* gcc.target/arm/cmse/mainline/bitfield-7.c: New.
	* gcc.target/arm/cmse/mainline/bitfield-8.c: New.
	* gcc.target/arm/cmse/mainline/bitfield-9.c: New.
	* gcc.target/arm/cmse/mainline/bitfield-and-union-1.c: New.
	* gcc.target/arm/cmse/mainline/union-1.c: New.
	* gcc.target/arm/cmse/mainline/union-2.c: New.
	* gcc.target/arm/cmse/mainline/hard-sp/cmse-13.c: New.
	* gcc.target/arm/cmse/mainline/hard-sp/cmse-7.c: New.
	* gcc.target/arm/cmse/mainline/hard-sp/cmse-8.c: New.
	* gcc.target/arm/cmse/mainline/hard/cmse-13.c: New.
	* gcc.target/arm/cmse/mainline/hard/cmse-7.c: New.
	* gcc.target/arm/cmse/mainline/hard/cmse-8.c: New.
	* gcc.target/arm/cmse/mainline/soft/cmse-13.c: New.
	* gcc.target/arm/cmse/mainline/soft/cmse-7.c: New.
	* gcc.target/arm/cmse/mainline/soft/cmse-8.c: New.
	* gcc.target/arm/cmse/mainline/softfp-sp/cmse-7.c: New.
	* gcc.target/arm/cmse/mainline/softfp-sp/cmse-8.c: New.
	* gcc.target/arm/cmse/mainline/softfp/cmse-13.c: New.
	* gcc.target/arm/cmse/mainline/softfp/cmse-7.c: New.
	* gcc.target/arm/cmse/mainline/softfp/cmse-8.c: New.

	libgcc/
	Backport from trunk r243192.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/cmse_nonsecure_call.S: New.
	* config/arm/t-arm: Compile cmse_nonsecure_call.S

	gcc/
	Backport from trunk r243193.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/arm-builtins.c (arm_builtins): Define
	ARM_BUILTIN_CMSE_NONSECURE_CALLER.
	(bdesc_2arg): Add line for cmse_nonsecure_caller.
	(arm_init_builtins): Handle cmse_nonsecure_caller.
	(arm_expand_builtin): Likewise.
	* config/arm/arm_cmse.h (cmse_nonsecure_caller): New.

	gcc/testsuite/
	Backport from trunk r243193.
	2016-12-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* gcc.target/arm/cmse/cmse-1.c: Add test for
	cmse_nonsecure_caller.

	gcc/
	Backport from trunk r243216.
	2016-12-01  Jeff Law  <law@redhat.com>

	* config/arm/arm.c (arm_handle_cmse_nonsecure_call): Remove unused
	variable main_variant.

Change-Id: Ibe821b25c811c214c51d5cbaceb4ea960c619633

1 files changed, 23 insertions, 0 deletions

diff --git a/gcc/common/config/arm/arm-common.c b/gcc/common/config/arm/arm-common.c
index a9abd6b026e..29ae0c35dd0 100644
--- a/gcc/common/config/arm/arm-common.c
+++ b/gcc/common/config/arm/arm-common.c
@@ -97,6 +97,29 @@ arm_rewrite_mcpu (int argc, const char **argv)
   return arm_rewrite_selected_cpu (argv[argc - 1]);
 }
 
+/* Called by the driver to check whether the target denoted by current
+   command line options is a Thumb-only target.  ARGV is an array of
+   -march and -mcpu values (ie. it contains the rhs after the equal
+   sign) and we use the last one of them to make a decision.  The
+   number of elements in ARGV is given in ARGC.  */
+const char *
+arm_target_thumb_only (int argc, const char **argv)
+{
+  unsigned int opt;
+
+  if (argc)
+    {
+      for (opt = 0; opt < (ARRAY_SIZE (arm_arch_core_flags)); opt++)
+	if ((strcmp (argv[argc - 1], arm_arch_core_flags[opt].name) == 0)
+	    && !ARM_FSET_HAS_CPU1(arm_arch_core_flags[opt].flags, FL_NOTM))
+	  return "-mthumb";
+
+      return NULL;
+    }
+  else
+    return NULL;
+}
+
 #undef ARM_CPU_NAME_LENGTH