2018-01-08  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/quad-float128.h (IBM128_TYPE): Explicitly use
	__ibm128, instead of trying to use long double.
	(CVT_FLOAT128_TO_IBM128): Use TFtype instead of __float128 to
	accomidate -mabi=ieeelongdouble multilibs.
	(CVT_IBM128_TO_FLOAT128): Likewise.
	* config/rs6000/ibm-ldouble.c (IBM128_TYPE): New macro to define
	the appropriate IBM extended double type.
	(__gcc_qadd): Change all occurances of long double to IBM128_TYPE.
	(__gcc_qsub): Likewise.
	(__gcc_qmul): Likewise.
	(__gcc_qdiv): Likewise.
	(pack_ldouble): Likewise.
	(__gcc_qneg): Likewise.
	(__gcc_qeq): Likewise.
	(__gcc_qne): Likewise.
	(__gcc_qge): Likewise.
	(__gcc_qle): Likewise.
	(__gcc_stoq): Likewise.
	(__gcc_dtoq): Likewise.
	(__gcc_itoq): Likewise.
	(__gcc_utoq): Likewise.
	(__gcc_qunord): Likewise.
	* config/rs6000/_mulkc3.c (toplevel): Include soft-fp.h and
	quad-float128.h for the definitions.
	(COPYSIGN): Use the f128 version instead of the q version.
	(INFINITY): Likewise.
	(__mulkc3): Use TFmode/TCmode for float128 scalar/complex types.
	* config/rs6000/_divkc3.c (toplevel): Include soft-fp.h and
	quad-float128.h for the definitions.
	(COPYSIGN): Use the f128 version instead of the q version.
	(INFINITY): Likewise.
	(FABS): Likewise.
	(__divkc3): Use TFmode/TCmode for float128 scalar/complex types.
	* config/rs6000/extendkftf2-sw.c (__extendkftf2_sw): Likewise.
	* config/rs6000/trunctfkf2-sw.c (__trunctfkf2_sw): Likewise.

From-SVN: r256353

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

	* expr.c (gfc_check_pointer_assign): Fix typo in comment.

From-SVN: r256352

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	* config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
	function.
	(do_ifelse): New function.
	(do_isel): New function.
	(do_sub3): New function.
	(do_add3): New function.
	(do_load_mask_compare): New function.
	(do_overlap_load_compare): New function.
	(expand_compare_loop): New function.
	(expand_block_compare): Call expand_compare_loop() when appropriate.
	* config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
	option description.
	(-mblock-compare-inline-loop-limit): New option.

From-SVN: r256351

	PR rtl-optimizatin/81308
	* tree-switch-conversion.c (cfg_altered): New file scoped static.
	(process_switch): If group_case_labels makes a change, then set
	cfg_altered.
	(pass_convert_switch::execute): If a switch is converted, then
	set cfg_altered.  Return TODO_cfg_cleanup if cfg_altered is true.

	PR rtl-optimizatin/81308
	* g++.dg/pr81308-1.C: New test.
	* g++.dg/pr81308-2.C: New test.

From-SVN: r256349

	PR rtl-optimization/81308
	* recog.c (split_all_insns): Conditionally cleanup the CFG after
	splitting insns.

From-SVN: r256348

rs6000.c (rs6000_legitimate_combined_insn): Updated with the new names of the branch decrement patterns...

* config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
	with the new names of the branch decrement patterns, and added the
	names of the branch decrement conditional patterns.

From-SVN: r256347

gcc/

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

	PR target/83663 - Revert r255946
	* config/aarch64/aarch64.c (aarch64_expand_vector_init): Modify code
	generation for cases where splatting a value is not useful.
	* simplify-rtx.c (simplify_ternary_operation): Simplify vec_merge
	across a vec_duplicate and a paradoxical subreg forming a vector
	mode to a vec_concat.

gcc/testsuite/

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

	PR target/83663 - Revert r255946
	* gcc.target/aarch64/vect-slp-dup.c: New.

From-SVN: r256346

We don't have the t-aprofile, t-multilib and t-arm-elf mapping
rules for multilibs when using the variants of -march=armv8.3-a
and the dotproduct extension.
This patch adds them. -march=armv8.3-a behaves in the same
way as -march=armv8.2-a in this regard.

Bootstrapped and tested with the aprofile multilib list.
Checked that --print-multi-directory gives sensible results
with armv8.3-a options and extensions.
I've also added some armv8.3-a, fp16 and dotprod
combination tests to multilib.exp

	* config/arm/t-aprofile (MULTILIB_MATCHES): Add mapping rules for
	-march=armv8.3-a variants.
	* config/arm/t-multilib: Likewise.
	* config/arm/t-arm-elf: Likewise.  Handle dotprod extension.

	* gcc.target/arm/multilib.exp: Add fp16, dotprod and armv8.3-a
	combination tests.

From-SVN: r256345

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	* config/rs6000/rs6000.md (cceq_ior_compare): Remove * so I can use it
	to generate rtl.
	(cceq_ior_compare_complement): Give it a name so I can use it, and
	change boolean_or_operator predicate to boolean_operator so it can
	be used to generate a crand.
	(eqne): New code iterator.
	(bd/bd_neg): New code_attrs.
	(<bd>_<mode>): New name for ctr<mode>_internal[12] now combined into
	a single define_insn.
	(<bd>tf_<mode>): A new insn pattern for the conditional form branch
	decrement (bdnzt/bdnzf/bdzt/bdzf).
	* config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
	with the new names of the branch decrement patterns, and added the
	names of the branch decrement conditional patterns.

From-SVN: r256344

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83563
	* graphite.c (canonicalize_loop_closed_ssa_form): Reset the SCEV
	cache.

	* gcc.dg/graphite/pr83563.c: New testcase.

From-SVN: r256343

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/83713
	* convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks.

	* g++.dg/torture/pr83713.C: New testcase.

From-SVN: r256341

2018-01-08  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/ssa-dom-cse-2.c: Xfail scan for nvptx.

From-SVN: r256340

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83685
	* tree-ssa-pre.c (create_expression_by_pieces): Do not insert
	references to abnormals.

	* gcc.dg/torture/pr83685.c: New testcase.

From-SVN: r256339

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR lto/83719
	* dwarf2out.c (output_indirect_strings): Handle empty
	skeleton_debug_str_hash.
	(dwarf2out_early_finish): Index strings for -gsplit-dwarf.

	* gcc.dg/lto/pr83719_0.c: New testcase.

From-SVN: r256338

By switching from int to size_t in order to handle larger values,
r256322 introduced a bug that manifested itself on 32-bit
targets. Fixed by using the correct type to store the result of a
next_array_record call.

Regtested on x86_64-pc-linux-gnu and i686-pc-linux-gnu, committed to
trunk as obvious.

libgfortran/ChangeLog:

2018-01-08  Janne Blomqvist  <jb@gcc.gnu.org>

	PR 78534, bugfix for r256322
	* io/transfer.c (next_record_w): Use correct type for return value
	of next_array_record.

From-SVN: r256337

2018-01-08  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/graphite/interchange-7.c: Add dg-require-stack-size.
	* gcc.dg/graphite/run-id-1.c: Same.
	* gcc.dg/tree-ssa/loop-interchange-4.c: Same.

From-SVN: r256336

2018-01-08  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/83611
	* decl.c (gfc_get_pdt_instance): If parameterized arrays have
	an initializer, convert the kind parameters and add to the
	component if the instance.
	* trans-array.c (structure_alloc_comps): Add 'is_pdt_type' and
	use it with case COPY_ALLOC_COMP. Call 'duplicate_allocatable'
	for parameterized arrays. Clean up typos in comments. Convert
	parameterized array initializers and copy into the array.
	* trans-expr.c (gfc_trans_scalar_assign): Do a deep copy for
	parameterized types.
	*trans-stmt.c (trans_associate_var): Deallocate associate vars
	as necessary, when they are PDT function results for example.

	PR fortran/83731
	* trans-array.c (structure_alloc_comps): Only compare len parms
	when they are declared explicitly.

2018-01-08  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/83611
	* gfortran.dg/pdt_15.f03 : Bump count of 'n.data = 0B' to 8.
	* gfortran.dg/pdt_26.f03 : Bump count of '_malloc' to 9.
	* gfortran.dg/pdt_27.f03 : New test.

	PR fortran/83731
	* gfortran.dg/pdt_28.f03 : New test.

From-SVN: r256335

The new implementation attempts to clean up the existing trampoline
implementation for ARC making it to work for linux type of systems.

gcc/
2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (TARGET_TRAMPOLINE_ADJUST_ADDRESS): Delete.
        (emit_store_direct): Likewise.
        (arc_trampoline_adjust_address): Likewise.
        (arc_asm_trampoline_template): New function.
        (arc_initialize_trampoline): Use asm_trampoline_template.
        (TARGET_ASM_TRAMPOLINE_TEMPLATE): Define.
        * config/arc/arc.h (TRAMPOLINE_SIZE): Adjust to 16.
        *config/arc/arc.md (flush_icache): Delete pattern.

From-SVN: r256334

Use munaligned-access to control if we can have unaligned accesses.  For ARC
HS family unaligned access is always on.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-c.def (__ARC_UNALIGNED__): New define.
	* config/arc/arc.h (STRICT_ALIGNMENT): Control this macro using
	munaligned-access.

From-SVN: r256333

2018-01-08  Tom de Vries  <tom@codesourcery.com>

	* c-c++-common/builtins.c: Require effective target alloca.
	* gcc.dg/Wrestrict.c: Same.
	* gcc.dg/tree-ssa/loop-interchange-15.c: Same.

From-SVN: r256332

gcc/

	PR target/83681
	* config/epiphany/epiphany.h (make_pass_mode_switch_use): Guard
	by not USED_FOR_TARGET.
	(make_pass_resolve_sw_modes): Likewise.

From-SVN: r256331

gcc/
	* config/nios2/nios2.h (nios2_section_threshold): Guard by not
	USED_FOR_TARGET.

From-SVN: r256330

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/83580
	* tree-data-ref.c (split_constant_offset): Remove STRIP_NOPS.

	* gcc.dg/torture/pr83580.c: New testcase.

From-SVN: r256329

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/83517
	* match.pd ((t * 2) / 2) -> t): Add missing :c.

	* gcc.dg/pr83517.c: New testcase.

From-SVN: r256328

From-SVN: r256327

2018-01-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* libgfortran.h (GFC_DTYPE_COPY): New macro.
	(GFC_DTYPE_COPY_SETRANK): New macro.
	(GFC_DTYPE_IS_UNSET): New macro.
	* intrinsics/cshift0.c (cshift0): Use new macros.
	* intrinsics/eoshift0.c (eoshift0): Likewise.
	* intrinsics/eoshift2.c (eoshift2): Likewise.
	* intrinsics/move_alloc.c (move_alloc): Likewise.
	* intrinsics/reshape_generic.c (reshape_internal): Likewise.
	* intrinsics/spread_generic.c (spread_internal): Likewise.
	* intrinsics/spread_generic.c (spread_scalar): Likewise.
	* intrinsics/spread_generic.c (spread_char_scalar): Likewise.
	* intrinsics/spread_generic.c (spread_char4_scalar): Likewise.
	* intrinsics/unpack_generic.c (unpack0): Likewise.
	* intrinsics/unpack_generic.c (unpack0_char): Likewise.
	* intrinsics/unpack_generic.c (unpack0_char4): Likewise.
	* m4/cshift1.m4 (cshift1): Likewise.
	* m4/eoshift1.m4 (eoshift1): Likewise.
	* m4/eoshift3.m4 (eoshift3): Likewise.
	* m4/iforeach-s.m4: Likewise.
	* m4/iforeach.m4: Likewise.
	* m4/ifunction-s.m4: Likewise.
	* m4/ifunction-s2.m4: Likewise.
	* m4/ifunction.m4: Likewise.
	* m4/ifunction_logical.m4: Likewise.
	* m4/reshape.m4: Likewise.
	* m4/spread.m4: Likewise.
	* generated/all_l1.c : Regenerated.
	* generated/all_l16.c : Regenerated.
	* generated/all_l2.c : Regenerated.
	* generated/all_l4.c : Regenerated.
	* generated/all_l8.c : Regenerated.
	* generated/any_l1.c : Regenerated.
	* generated/any_l16.c : Regenerated.
	* generated/any_l2.c : Regenerated.
	* generated/any_l4.c : Regenerated.
	* generated/any_l8.c : Regenerated.
	* generated/count_16_l.c : Regenerated.
	* generated/count_1_l.c : Regenerated.
	* generated/count_2_l.c : Regenerated.
	* generated/count_4_l.c : Regenerated.
	* generated/count_8_l.c : Regenerated.
	* generated/cshift1_16.c : Regenerated.
	* generated/cshift1_4.c : Regenerated.
	* generated/cshift1_8.c : Regenerated.
	* generated/eoshift1_16.c : Regenerated.
	* generated/eoshift1_4.c : Regenerated.
	* generated/eoshift1_8.c : Regenerated.
	* generated/eoshift3_16.c : Regenerated.
	* generated/eoshift3_4.c : Regenerated.
	* generated/eoshift3_8.c : Regenerated.
	* generated/iall_i1.c : Regenerated.
	* generated/iall_i16.c : Regenerated.
	* generated/iall_i2.c : Regenerated.
	* generated/iall_i4.c : Regenerated.
	* generated/iall_i8.c : Regenerated.
	* generated/iany_i1.c : Regenerated.
	* generated/iany_i16.c : Regenerated.
	* generated/iany_i2.c : Regenerated.
	* generated/iany_i4.c : Regenerated.
	* generated/iany_i8.c : Regenerated.
	* generated/iparity_i1.c : Regenerated.
	* generated/iparity_i16.c : Regenerated.
	* generated/iparity_i2.c : Regenerated.
	* generated/iparity_i4.c : Regenerated.
	* generated/iparity_i8.c : Regenerated.
	* generated/maxloc0_16_i1.c : Regenerated.
	* generated/maxloc0_16_i16.c : Regenerated.
	* generated/maxloc0_16_i2.c : Regenerated.
	* generated/maxloc0_16_i4.c : Regenerated.
	* generated/maxloc0_16_i8.c : Regenerated.
	* generated/maxloc0_16_r10.c : Regenerated.
	* generated/maxloc0_16_r16.c : Regenerated.
	* generated/maxloc0_16_r4.c : Regenerated.
	* generated/maxloc0_16_r8.c : Regenerated.
	* generated/maxloc0_16_s1.c : Regenerated.
	* generated/maxloc0_16_s4.c : Regenerated.
	* generated/maxloc0_4_i1.c : Regenerated.
	* generated/maxloc0_4_i16.c : Regenerated.
	* generated/maxloc0_4_i2.c : Regenerated.
	* generated/maxloc0_4_i4.c : Regenerated.
	* generated/maxloc0_4_i8.c : Regenerated.
	* generated/maxloc0_4_r10.c : Regenerated.
	* generated/maxloc0_4_r16.c : Regenerated.
	* generated/maxloc0_4_r4.c : Regenerated.
	* generated/maxloc0_4_r8.c : Regenerated.
	* generated/maxloc0_4_s1.c : Regenerated.
	* generated/maxloc0_4_s4.c : Regenerated.
	* generated/maxloc0_8_i1.c : Regenerated.
	* generated/maxloc0_8_i16.c : Regenerated.
	* generated/maxloc0_8_i2.c : Regenerated.
	* generated/maxloc0_8_i4.c : Regenerated.
	* generated/maxloc0_8_i8.c : Regenerated.
	* generated/maxloc0_8_r10.c : Regenerated.
	* generated/maxloc0_8_r16.c : Regenerated.
	* generated/maxloc0_8_r4.c : Regenerated.
	* generated/maxloc0_8_r8.c : Regenerated.
	* generated/maxloc0_8_s1.c : Regenerated.
	* generated/maxloc0_8_s4.c : Regenerated.
	* generated/maxloc1_16_i1.c : Regenerated.
	* generated/maxloc1_16_i16.c : Regenerated.
	* generated/maxloc1_16_i2.c : Regenerated.
	* generated/maxloc1_16_i4.c : Regenerated.
	* generated/maxloc1_16_i8.c : Regenerated.
	* generated/maxloc1_16_r10.c : Regenerated.
	* generated/maxloc1_16_r16.c : Regenerated.
	* generated/maxloc1_16_r4.c : Regenerated.
	* generated/maxloc1_16_r8.c : Regenerated.
	* generated/maxloc1_16_s1.c : Regenerated.
	* generated/maxloc1_16_s4.c : Regenerated.
	* generated/maxloc1_4_i1.c : Regenerated.
	* generated/maxloc1_4_i16.c : Regenerated.
	* generated/maxloc1_4_i2.c : Regenerated.
	* generated/maxloc1_4_i4.c : Regenerated.
	* generated/maxloc1_4_i8.c : Regenerated.
	* generated/maxloc1_4_r10.c : Regenerated.
	* generated/maxloc1_4_r16.c : Regenerated.
	* generated/maxloc1_4_r4.c : Regenerated.
	* generated/maxloc1_4_r8.c : Regenerated.
	* generated/maxloc1_4_s1.c : Regenerated.
	* generated/maxloc1_4_s4.c : Regenerated.
	* generated/maxloc1_8_i1.c : Regenerated.
	* generated/maxloc1_8_i16.c : Regenerated.
	* generated/maxloc1_8_i2.c : Regenerated.
	* generated/maxloc1_8_i4.c : Regenerated.
	* generated/maxloc1_8_i8.c : Regenerated.
	* generated/maxloc1_8_r10.c : Regenerated.
	* generated/maxloc1_8_r16.c : Regenerated.
	* generated/maxloc1_8_r4.c : Regenerated.
	* generated/maxloc1_8_r8.c : Regenerated.
	* generated/maxloc1_8_s1.c : Regenerated.
	* generated/maxloc1_8_s4.c : Regenerated.
	* generated/maxval1_s1.c : Regenerated.
	* generated/maxval1_s4.c : Regenerated.
	* generated/maxval_i1.c : Regenerated.
	* generated/maxval_i16.c : Regenerated.
	* generated/maxval_i2.c : Regenerated.
	* generated/maxval_i4.c : Regenerated.
	* generated/maxval_i8.c : Regenerated.
	* generated/maxval_r10.c : Regenerated.
	* generated/maxval_r16.c : Regenerated.
	* generated/maxval_r4.c : Regenerated.
	* generated/maxval_r8.c : Regenerated.
	* generated/minloc0_16_i1.c : Regenerated.
	* generated/minloc0_16_i16.c : Regenerated.
	* generated/minloc0_16_i2.c : Regenerated.
	* generated/minloc0_16_i4.c : Regenerated.
	* generated/minloc0_16_i8.c : Regenerated.
	* generated/minloc0_16_r10.c : Regenerated.
	* generated/minloc0_16_r16.c : Regenerated.
	* generated/minloc0_16_r4.c : Regenerated.
	* generated/minloc0_16_r8.c : Regenerated.
	* generated/minloc0_16_s1.c : Regenerated.
	* generated/minloc0_16_s4.c : Regenerated.
	* generated/minloc0_4_i1.c : Regenerated.
	* generated/minloc0_4_i16.c : Regenerated.
	* generated/minloc0_4_i2.c : Regenerated.
	* generated/minloc0_4_i4.c : Regenerated.
	* generated/minloc0_4_i8.c : Regenerated.
	* generated/minloc0_4_r10.c : Regenerated.
	* generated/minloc0_4_r16.c : Regenerated.
	* generated/minloc0_4_r4.c : Regenerated.
	* generated/minloc0_4_r8.c : Regenerated.
	* generated/minloc0_4_s1.c : Regenerated.
	* generated/minloc0_4_s4.c : Regenerated.
	* generated/minloc0_8_i1.c : Regenerated.
	* generated/minloc0_8_i16.c : Regenerated.
	* generated/minloc0_8_i2.c : Regenerated.
	* generated/minloc0_8_i4.c : Regenerated.
	* generated/minloc0_8_i8.c : Regenerated.
	* generated/minloc0_8_r10.c : Regenerated.
	* generated/minloc0_8_r16.c : Regenerated.
	* generated/minloc0_8_r4.c : Regenerated.
	* generated/minloc0_8_r8.c : Regenerated.
	* generated/minloc0_8_s1.c : Regenerated.
	* generated/minloc0_8_s4.c : Regenerated.
	* generated/minloc1_16_i1.c : Regenerated.
	* generated/minloc1_16_i16.c : Regenerated.
	* generated/minloc1_16_i2.c : Regenerated.
	* generated/minloc1_16_i4.c : Regenerated.
	* generated/minloc1_16_i8.c : Regenerated.
	* generated/minloc1_16_r10.c : Regenerated.
	* generated/minloc1_16_r16.c : Regenerated.
	* generated/minloc1_16_r4.c : Regenerated.
	* generated/minloc1_16_r8.c : Regenerated.
	* generated/minloc1_16_s1.c : Regenerated.
	* generated/minloc1_16_s4.c : Regenerated.
	* generated/minloc1_4_i1.c : Regenerated.
	* generated/minloc1_4_i16.c : Regenerated.
	* generated/minloc1_4_i2.c : Regenerated.
	* generated/minloc1_4_i4.c : Regenerated.
	* generated/minloc1_4_i8.c : Regenerated.
	* generated/minloc1_4_r10.c : Regenerated.
	* generated/minloc1_4_r16.c : Regenerated.
	* generated/minloc1_4_r4.c : Regenerated.
	* generated/minloc1_4_r8.c : Regenerated.
	* generated/minloc1_4_s1.c : Regenerated.
	* generated/minloc1_4_s4.c : Regenerated.
	* generated/minloc1_8_i1.c : Regenerated.
	* generated/minloc1_8_i16.c : Regenerated.
	* generated/minloc1_8_i2.c : Regenerated.
	* generated/minloc1_8_i4.c : Regenerated.
	* generated/minloc1_8_i8.c : Regenerated.
	* generated/minloc1_8_r10.c : Regenerated.
	* generated/minloc1_8_r16.c : Regenerated.
	* generated/minloc1_8_r4.c : Regenerated.
	* generated/minloc1_8_r8.c : Regenerated.
	* generated/minloc1_8_s1.c : Regenerated.
	* generated/minloc1_8_s4.c : Regenerated.
	* generated/minval1_s1.c : Regenerated.
	* generated/minval1_s4.c : Regenerated.
	* generated/minval_i1.c : Regenerated.
	* generated/minval_i16.c : Regenerated.
	* generated/minval_i2.c : Regenerated.
	* generated/minval_i4.c : Regenerated.
	* generated/minval_i8.c : Regenerated.
	* generated/minval_r10.c : Regenerated.
	* generated/minval_r16.c : Regenerated.
	* generated/minval_r4.c : Regenerated.
	* generated/minval_r8.c : Regenerated.
	* generated/norm2_r10.c : Regenerated.
	* generated/norm2_r16.c : Regenerated.
	* generated/norm2_r4.c : Regenerated.
	* generated/norm2_r8.c : Regenerated.
	* generated/parity_l1.c : Regenerated.
	* generated/parity_l16.c : Regenerated.
	* generated/parity_l2.c : Regenerated.
	* generated/parity_l4.c : Regenerated.
	* generated/parity_l8.c : Regenerated.
	* generated/product_c10.c : Regenerated.
	* generated/product_c16.c : Regenerated.
	* generated/product_c4.c : Regenerated.
	* generated/product_c8.c : Regenerated.
	* generated/product_i1.c : Regenerated.
	* generated/product_i16.c : Regenerated.
	* generated/product_i2.c : Regenerated.
	* generated/product_i4.c : Regenerated.
	* generated/product_i8.c : Regenerated.
	* generated/product_r10.c : Regenerated.
	* generated/product_r16.c : Regenerated.
	* generated/product_r4.c : Regenerated.
	* generated/product_r8.c : Regenerated.
	* generated/reshape_c10.c : Regenerated.
	* generated/reshape_c16.c : Regenerated.
	* generated/reshape_c4.c : Regenerated.
	* generated/reshape_c8.c : Regenerated.
	* generated/reshape_i16.c : Regenerated.
	* generated/reshape_i4.c : Regenerated.
	* generated/reshape_i8.c : Regenerated.
	* generated/reshape_r10.c : Regenerated.
	* generated/reshape_r16.c : Regenerated.
	* generated/reshape_r4.c : Regenerated.
	* generated/reshape_r8.c : Regenerated.
	* generated/spread_c10.c : Regenerated.
	* generated/spread_c16.c : Regenerated.
	* generated/spread_c4.c : Regenerated.
	* generated/spread_c8.c : Regenerated.
	* generated/spread_i1.c : Regenerated.
	* generated/spread_i16.c : Regenerated.
	* generated/spread_i2.c : Regenerated.
	* generated/spread_i4.c : Regenerated.
	* generated/spread_i8.c : Regenerated.
	* generated/spread_r10.c : Regenerated.
	* generated/spread_r16.c : Regenerated.
	* generated/spread_r4.c : Regenerated.
	* generated/spread_r8.c : Regenerated.
	* generated/sum_c10.c : Regenerated.
	* generated/sum_c16.c : Regenerated.
	* generated/sum_c4.c : Regenerated.
	* generated/sum_c8.c : Regenerated.
	* generated/sum_i1.c : Regenerated.
	* generated/sum_i16.c : Regenerated.
	* generated/sum_i2.c : Regenerated.
	* generated/sum_i4.c : Regenerated.
	* generated/sum_i8.c : Regenerated.
	* generated/sum_r10.c : Regenerated.
	* generated/sum_r16.c : Regenerated.
	* generated/sum_r4.c : Regenerated.
	* generated/sum_r8.c : Regenerated.

From-SVN: r256323

In order to handle large characters when doing formatted I/O, use
size_t and ptrdiff_t for lengths.  Compared to the previous patch,
based on discussions on IRC use size_t for sizes that don't need to be
negative rather than ptrdiff_t everywhere.

Regtested on x86_64-pc-linux-gnu, approved as part of the PR 78534
approval, committed to trunk.

libgfortran/ChangeLog:

2018-01-07  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/78534
	PR fortran/83704
	* io/fbuf.c (fbuf_init): Use size_t instead of int for length.
	(fbuf_debug): Convert debug output to unsigned long.
	(fbuf_reset): Use ptrdiff_t for return value.
	(fbuf_alloc): Use size_t for length argument.
	(fbuf_flush): Handle large buffers.
	(fbuf_flush_list): Likewise.
	(fbuf_seek): Use ptrdiff_t for offset and return value.
	(fbuf_read): Use size_t for length argument.
	(fbuf_getc_refill): Use size_t to match fbuf_read.
	* io/fbuf.h (struct fbuf): Use size_t for lengths.
	(fbuf_init): Use size_t instead of int for length.
	(fbuf_reset): Use ptrdiff_t for return value.
	(fbuf_alloc): Use size_t for length argument.
	(fbuf_seek): Use ptrdiff_t for offset and return value.
	(fbuf_read): Use size_t for length argument.
	* io/io.h (read_block_form): Likewise.
	(read_block_form4): Likewise.
	(write_block): Likewise.
	(read_a): Likewise.
	(read_a_char4): Likewise.
	(read_x): Likewise.
	(write_a): Likewise.
	(write_a_char4): Likewise.
	* io/list_read.c (list_formatted_read_scalar): Use size_t to
	handle large buffers.
	* io/read.c (read_l): Likewise.
	(read_utf8): Likewise.
	(read_utf8_char1): Likewise.
	(read_default_char1): Likewise.
	(read_utf8_char4): Likewise.
	(read_default_char4): Likewise.
	(read_a): Likewise.
	(read_a_char4): Likewise.
	(eat_leading_spaces): Likewise.
	(next_char): Likewise.
	(read_decimal): Likewise.
	(read_radix): Likewise.
	(read_f): Likewise.
	(read_x): Likewise.
	* io/transfer.c (read_sf_internal): Likewise.
	(read_sf): Likewise.
	(read_block_form): Likewise.
	(read_block_form4): Likewise.
	(write_block): Likewise.
	(formatted_transfer_scalar_write): Likewise.
	(next_record_w): Likewise.
	* io/unix.c (mem_alloc_r): Likewise.
	(mem_alloc_r4): Likewise.
	(mem_alloc_w): Likewise.
	(mem_alloc_w4): Likewise.
	(mem_read): Likewise.
	(mem_read4): Likewise.
	(mem_write): Likewise.
	(mem_write4): Likewise.
	(open_internal): Likewise.
	(open_internal4): Likewise.
	* io/unix.h (open_internal): Likewise.
	(open_internal4): Likewise.
	(mem_alloc_w): Likewise.
	(mem_alloc_r): Likewise.
	(mem_alloc_w4): Likewise.
	(mem_alloc_r4): Likewise.
	* io/write.c (write_check_cc): Likewise.
	(write_cc): Likewise.
	(write_a): Likewise.
	(write_a_char4): Likewise.

From-SVN: r256322

From-SVN: r256321

	PR middle-end/81897
	* tree-ssa-uninit.c (compute_control_dep_chain): Do not bail on
	basic blocks with a small number of successors.
	(convert_control_dep_chain_into_preds): Improve handling of
	forwarder blocks.
	(dump_predicates): Split apart into...
	(dump_pred_chain): ...here...
	(dump_pred_info): ...and here.
	(can_one_predicate_be_invalidated_p): Add debugging printfs.
	(can_chain_union_be_invalidated_p): Improve check for invalidation
	of paths.
	(uninit_uses_cannot_happen): Avoid unnecessary if
	convert_control_dep_chain_into_preds yielded nothing.

	PR middle-end/81897
	* gcc.dg/uninit-pr81897.c: New test.

From-SVN: r256320

2018-01-06  Martin Sebor  <msebor@redhat.com>

	PR tree-optimization/83640
	* gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Avoid
	subtracting negative offset from size.
	(builtin_access::overlap): Adjust offset bounds of the access to fall
	within the size of the object if possible.

	PR tree-optimization/83640
	* gcc.dg/Wrestrict-6.c: New test.
	* gcc.dg/pr83640.c: New test.

From-SVN: r256319

	PR rtl-optimization/83699
	* expmed.c (extract_bit_field_1): Restrict the vector usage of
	extract_bit_field_as_subreg to cases in which the extracted
	value is also a vector.

From-SVN: r256318

From-SVN: r256317

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

        * io/write.c (namelist_write): Remove unused variable "i".

From-SVN: r256314

For printing long characters, we need to use size_t instead of int in
the argument to write_character.

Regtested on x86_64-pc-linux-gnu, approved in the PR, committed to
trunk.

libgfortran/ChangeLog:

2018-01-06  Dominique d'Humieres  <dominiq@lps.ens.fr>
	    Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/83704
	* io/write.c (write_character): Use size_t instead of int for
	length.

Co-Authored-By: Janne Blomqvist <jb@gcc.gnu.org>

From-SVN: r256313

LRA has code to try to prevent cycling, by avoiding reloads that
look too similar to the instruction being reloaded.  E.g. if we
have a R<-C move for some constant C, reloading the source with
another R<-C move is unlikely to be a good idea.

However, this safeguard unnecessarily triggered in tests like
the one in the patch.  We started with instructions like:

(insn 12 9 13 5 (set (reg:DI 0 x0)
        (reg/f:DI 459)) "reg-alloc-1.c":18 47 {*movdi_aarch64}
     (expr_list:REG_EQUAL (symbol_ref:DI ("x00") [flags 0xc0]  <var_decl 0x7f3c03c1f510 x00>)
        (nil)))

where r459 didn't get allocated a register and is equivalent to
constant x00.  LRA would then handle it like this:

Changing pseudo 459 in operand 1 of insn 12 on equiv `x00'
            1 Non-pseudo reload: reject+=2
            1 Non input pseudo reload: reject++
------->    Cycle danger: overall += LRA_MAX_REJECT
          alt=0,overall=609,losers=1,rld_nregs=1
[...]
          alt=13,overall=9,losers=1,rld_nregs=1
[...]
         Choosing alt 13 in insn 12:  (0) r  (1) w {*movdi_aarch64}

In other words, to avoid loading the constant x00 into another GPR,
LRA decided instead to move it into a floating-point register,
then move that floating-point register into x0:

      Creating newreg=630, assigning class FP_REGS to r630
      Set class ALL_REGS for r631
   12: x0:DI=r630:DI
      REG_EQUAL `x00'
    Inserting insn reload before:
  815: r631:DI=high(`x00')
  816: r630:DI=r631:DI+low(`x00')
      REG_EQUAL `x00'

That's inefficient and doesn't really help to resolve a cycling
problem, since the r630 destination of 816 needs to be reloaded into
a GPR anyway.

The cycling check already had an exception for source values that are
the result of an elimination.  This patch extends it to include the
result of equivalence substitution.

2018-01-06  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* lra-constraints.c (process_alt_operands): Test for the equivalence
	substitutions when detecting a possible reload cycle.

gcc/testsuite/
	* gcc.target/aarch64/reg-alloc-1.c: New test.

From-SVN: r256312

The libgfortran/ChangeLog entry was accidentally not included in
r256284.

From-SVN: r256311

Due to r256284 (PR 78534) there was a latent bug that reared it's head
due to different character length types in the pointer
assignment. Fixed by this patch, which also adds a reduced testcase.

Regtested on x86_64-pc-linux-gnu, committed to trunk as obvious.

gcc/fortran/ChangeLog:

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/50892
	* trans-expr.c (gfc_trans_pointer_assignment): fold_convert rhs to
	lhs type.

gcc/testsuite/ChangeLog:

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/50892
	* gfortran.dg/char_pointer_assign_icb_1.f90: New test.

From-SVN: r256310

	PR debug/83480
	* toplev.c (process_options): Don't enable debug_nonbind_markers_p
	by default if flag_selective_schedling{,2}.  Formatting fixes.

	* gcc.dg/pr83480.c: New test.

From-SVN: r256309

	PR rtl-optimization/83682
	* rtl.h (const_vec_duplicate_p): Only return true for VEC_DUPLICATE
	if it has non-VECTOR_MODE element mode.
	(vec_duplicate_p): Likewise.

	* gcc.target/i386/pr83682.c: New test.

From-SVN: r256308

	PR middle-end/83694
	* cfgexpand.c (expand_debug_expr): Punt if mode1 is VOIDmode
	and bitsize might be greater than MAX_BITSIZE_MODE_ANY_INT.

From-SVN: r256307