gcc/ChangeLog:

        * doc/invoke.texi (-ffinite-loops): Document new option.
        * common.opt (-ffinite-loops): New option.
        * tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Mark
        IFN_GOACC_LOOP calls as necessary.
        * tree-ssa-loop-niter.c (finite_loop_p): Assume loop with an exit
        is finite.
        * omp-offload.c (oacc_xform_loop): Skip lowering if return value of
        IFN_GOACC_LOOP call is not used.
        * opts.c (default_options_table): Enable -ffinite-loops at -O2+.

gcc/testsuite/ChangeLog:

        * g++.dg/tree-ssa/empty-loop.C: New test.
        * gcc.dg/tree-ssa/dce-2.c: New test.
        * gcc.dg/const-1.c: Add -fno-finite-loops option.
        * gcc.dg/graphite/graphite.exp: Likewise.
        * gcc.dg/loop-unswitch-1.c: Likewise.
        * gcc.dg/predict-9.c: Likewise.
        * gcc.dg/pure-2.c: Likewise.
        * gcc.dg/tree-ssa/20040211-1.c: Likewise.
        * gcc.dg/tree-ssa/loop-10.c: Likewise.
        * gcc.dg/tree-ssa/split-path-6.c: Likewise.
        * gcc.dg/tree-ssa/ssa-thread-12.c: Likewise.

libgomp/ChangeLog:

        * testsuite/libgomp.oacc-c-c++-common/pr84955-1.c: New test.

From-SVN: r272234

gcc/ChangeLog:

2019-06-13  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

	PR target/88838
	* tree-vect-loop-manip.c (vect_set_loop_masks_directly): If the
	compare_type is not with Pmode size, we will create an IV with
	Pmode size with truncated use (i.e. converted to the correct type).
	* tree-vect-loop.c (vect_verify_full_masking): Find IV type.
	(vect_iv_limit_for_full_masking): New. Factored out of
	vect_set_loop_condition_masked.
	* tree-vectorizer.h (LOOP_VINFO_MASK_IV_TYPE): New.
	(vect_iv_limit_for_full_masking): Declare.

gcc/testsuite/ChangeLog:

2019-06-13  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

	PR target/88838
	* gcc.target/aarch64/pr88838.c: New test.
	* gcc.target/aarch64/sve/while_1.c: Adjust.

From-SVN: r272233

gcc/ChangeLog:

2019-06-13  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

	PR target/88834
	* tree-ssa-loop-ivopts.c (get_mem_type_for_internal_fn): Handle
	IFN_MASK_LOAD_LANES and IFN_MASK_STORE_LANES.
	(get_alias_ptr_type_for_ptr_address): Likewise.
	(add_iv_candidate_for_use): Add scaled index candidate if useful.
	* tree-ssa-address.c (preferred_mem_scale_factor): New.
	* config/aarch64/aarch64.c (aarch64_classify_address): Relax
	allow_reg_index_p.

gcc/testsuite/ChangeLog:

2019-06-13  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

	PR target/88834
	* gcc.target/aarch64/pr88834.c: New test.
	* gcc.target/aarch64/sve/struct_vect_1.c: Adjust.
	* gcc.target/aarch64/sve/struct_vect_14.c: Likewise.
	* gcc.target/aarch64/sve/struct_vect_15.c: Likewise.
	* gcc.target/aarch64/sve/struct_vect_16.c: Likewise.
	* gcc.target/aarch64/sve/struct_vect_17.c: Likewise.
	* gcc.target/aarch64/sve/struct_vect_7.c: Likewise.

From-SVN: r272232

gcc/ChangeLog:

2019-06-13  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

	* config/aarch64/iterators.md (ADDSUB): Fix typo in comment.

From-SVN: r272231

	PR c++/87410
	* g++.dg/cpp1y/pr87410.C: New test.

From-SVN: r272230

From-SVN: r272228

	* parser.c (cp_parser_lambda_introducer): Reject `&this'.  Use
	cp_lexer_nth_token_is instead of cp_lexer_peek_nth_token.

	* g++.dg/cpp0x/lambda/lambda-this21.C: New test.

From-SVN: r272223

	* io.c (check_format): Use G_(...) instead of _(...) for error values,
	append " in format string at %L" to all strings but unexpected_element,
	use error as gfc_error formating string instead of
	"%s in format string at %L".  Formatting fixes.

From-SVN: r272222

	PR c++/90832 - endless recursion when evaluating sizeof.
	* constexpr.c (cxx_eval_constant_expression): Don't recurse on the
	result of fold_sizeof_expr if is returns a SIZEOF_EXPR.
	* typeck.c (cxx_sizeof_expr): Only return a SIZEOF_EXPR if the operand
	is instantiation-dependent.

	* g++.dg/cpp0x/constexpr-sizeof2.C: New test.
	* g++.dg/cpp0x/constexpr-sizeof3.C: New test.

From-SVN: r272221

2019-06-12  Steven G. Kargl  <kargl@gcc.gnu.org>
 
	* gfortran.h (gfc_free_dt_list): Remove prototype.

From-SVN: r272220

Tweak tests to avoid fallout from MEM_REF changes on targets that don't
enable store merging but achieve the same effect by other means (DSE).

gcc/testsuite?ChangeLog:

	PR middle-end/90676
	* gcc.dg/tree-ssa/pr30375.c: Adjust and simplify expected test
	output some more.
	* gcc.dg/tree-ssa/slsr-27.c: Ditto.
	* gcc.dg/tree-ssa/slsr-28.c: Ditto.
	* gcc.dg/tree-ssa/slsr-29.c: Ditto.
	* gcc.dg/tree-ssa/ssa-dse-24.c: Ditto.

From-SVN: r272218

	* constexpr.c (adjust_temp_type): Use cv_unqualified type.

	* g++.dg/cpp0x/alignof5.C: New test.

From-SVN: r272217

	* include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
	* include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
	* include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
	* testsuite/25_algorithms/pstl/feature_test.cc: New test.

From-SVN: r272216

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r272215

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

        * gcc.dg/builtin-apply2.c: Skip for PRU.
        * gcc.dg/torture/stackalign/builtin-apply-2.c: Ditto.

From-SVN: r272212

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* g++.old-deja/g++.abi/ptrmem.C: Add PRU to list.

From-SVN: r272211

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* gcc.dg/tree-ssa/20040204-1.c: XFAIL on pru.
	* gcc.dg/tree-ssa/reassoc-33.c: Ditto.
	* gcc.dg/tree-ssa/reassoc-34.c: Ditto.
	* gcc.dg/tree-ssa/reassoc-35.c: Ditto.
	* gcc.dg/tree-ssa/reassoc-36.c: Ditto.

From-SVN: r272210

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* gcc.dg/stack-usage-1.c: Define PRU stack usage.

From-SVN: r272209

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* gcc.c-torture/execute/20101011-1.c: Define DO_TEST to 0 for PRU.
	* gcc.dg/20020312-2.c: No PIC register for PRU.

From-SVN: r272208

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* lib/gcc-dg.exp: Filter unsupported features in PRU's TI ABI mode.
	* lib/target-utils.exp: Ditto.
	* lib/target-supports.exp (check_effective_target_function_pointers,
	check_effective_target_large_return_values): New.

From-SVN: r272207

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* lib/gcc-dg.exp: Bail on region overflow for tiny targets.
	* lib/target-utils.exp: Ditto.
	* lib/target-supports.exp: Declare PRU target as tiny.

From-SVN: r272206

gcc/testsuite/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* gcc.target/pru/abi-arg-struct.c: New test.
	* gcc.target/pru/ashiftrt.c: New test.
	* gcc.target/pru/builtins-1.c: New test.
	* gcc.target/pru/builtins-error.c: New test.
	* gcc.target/pru/clearbit.c: New test.
	* gcc.target/pru/loop-asm.c: New test.
	* gcc.target/pru/loop-dowhile.c: New test.
	* gcc.target/pru/loop-hi-1.c: New test.
	* gcc.target/pru/loop-hi-2.c: New test.
	* gcc.target/pru/loop-qi-1.c: New test.
	* gcc.target/pru/loop-qi-2.c: New test.
	* gcc.target/pru/loop-short-1.c: New test.
	* gcc.target/pru/loop-short-2.c: New test.
	* gcc.target/pru/loop-si-1.c: New test.
	* gcc.target/pru/loop-si-2.c: New test.
	* gcc.target/pru/loop-u8_pcrel_overflow.c: New test.
	* gcc.target/pru/loop-ubyte-1.c: New test.
	* gcc.target/pru/loop-ubyte-2.c: New test.
	* gcc.target/pru/lra-framepointer-fragmentation-1.c: New test.
	* gcc.target/pru/lra-framepointer-fragmentation-2.c: New test.
	* gcc.target/pru/mabi-ti-1.c: New test.
	* gcc.target/pru/mabi-ti-2.c: New test.
	* gcc.target/pru/mabi-ti-3.c: New test.
	* gcc.target/pru/mabi-ti-4.c: New test.
	* gcc.target/pru/mabi-ti-5.c: New test.
	* gcc.target/pru/mabi-ti-6.c: New test.
	* gcc.target/pru/mabi-ti-7.c: New test.
	* gcc.target/pru/pr64366.c: New test.
	* gcc.target/pru/pragma-ctable_entry.c: New test.
	* gcc.target/pru/pru.exp: New file.
	* gcc.target/pru/qbbc-1.c: New test.
	* gcc.target/pru/qbbc-2.c: New test.
	* gcc.target/pru/qbbc-3.c: New test.
	* gcc.target/pru/qbbs-1.c: New test.
	* gcc.target/pru/qbbs-2.c: New test.
	* gcc.target/pru/setbit.c: New test.
	* gcc.target/pru/zero_extend-and-hisi.c: New test.
	* gcc.target/pru/zero_extend-and-qihi.c: New test.
	* gcc.target/pru/zero_extend-and-qisi.c: New test.
	* gcc.target/pru/zero_extend-hisi.c: New test.
	* gcc.target/pru/zero_extend-qihi.c: New test.
	* gcc.target/pru/zero_extend-qisi.c: New test.
	* lib/target-supports.exp: Add PRU to feature filters.

From-SVN: r272205

libgcc/ChangeLog:

2019-06-12  Dimitar Dimitrov  <dimitar@dinux.eu>

	* config.host: Add PRU target.
	* config/pru/asri.c: New file.
	* config/pru/eqd.c: New file.
	* config/pru/eqf.c: New file.
	* config/pru/ged.c: New file.
	* config/pru/gef.c: New file.
	* config/pru/gtd.c: New file.
	* config/pru/gtf.c: New file.
	* config/pru/led.c: New file.
	* config/pru/lef.c: New file.
	* config/pru/lib2bitcountHI.c: New file.
	* config/pru/lib2divHI.c: New file.
	* config/pru/lib2divQI.c: New file.
	* config/pru/lib2divSI.c: New file.
	* config/pru/libgcc-eabi.ver: New file.
	* config/pru/ltd.c: New file.
	* config/pru/ltf.c: New file.
	* config/pru/mpyll.S: New file.
	* config/pru/pru-abi.h: New file.
	* config/pru/pru-asm.h: New file.
	* config/pru/pru-divmod.h: New file.
	* config/pru/sfp-machine.h: New file.
	* config/pru/t-pru: New file.

From-SVN: r272204

From-SVN: r272203

ChangeLog:

2019-06-19  Dimitar Dimitrov  <dimitar@dinux.eu>

	* configure: Regenerate.
	* configure.ac: Add PRU target.

gcc/ChangeLog:

2019-06-19  Dimitar Dimitrov  <dimitar@dinux.eu>

	* common/config/pru/pru-common.c: New file.
	* config.gcc: Add PRU target.
	* config/pru/alu-zext.md: New file.
	* config/pru/constraints.md: New file.
	* config/pru/predicates.md: New file.
	* config/pru/pru-opts.h: New file.
	* config/pru/pru-passes.c: New file.
	* config/pru/pru-pragma.c: New file.
	* config/pru/pru-protos.h: New file.
	* config/pru/pru.c: New file.
	* config/pru/pru.h: New file.
	* config/pru/pru.md: New file.
	* config/pru/pru.opt: New file.
	* config/pru/t-pru: New file.
	* doc/extend.texi: Document PRU pragmas.
	* doc/invoke.texi: Document PRU-specific options.
	* doc/md.texi: Document PRU asm constraints.

From-SVN: r272202

2019-06-12  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90002
	* array.c (gfc_free_array_spec): When freeing an array-spec, avoid
	an ICE for assumed-shape coarrays 

2019-06-12  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90002
	* gfortran.dg/pr90002.f90: New test.

From-SVN: r272201

From-SVN: r272200

gcc/ChangeLog:

	PR middle-end/90676
	* tree-pretty-print.c (dump_mem_ref): New function.  Include
	MEM_REF type in output when different size than operand.
	(dump_generic_node): Move code to dump_mem_ref and call it.

gcc/testsuite/ChangeLog:

	PR middle-end/90676
	* gcc.dg/tree-ssa/dump-6.c: New test.
	* g++.dg/tree-ssa/pr19807.C: Adjust expected output.
	* g++.dg/tree-ssa/ssa-dse-1.C: Same.
	* gcc.dg/store_merging_5.c: Same.
	* gcc.dg/tree-prof/stringop-2.c: Same.
	* gcc.dg/tree-ssa/pr30375.c: Same.
	* gcc.dg/tree-ssa/slsr-27.c: Same.
	* gcc.dg/tree-ssa/slsr-28.c: Same.
	* gcc.dg/tree-ssa/slsr-29.c: Same.
	* gcc.dg/tree-ssa/ssa-dse-24.c: Same.

From-SVN: r272199

gcc/ChangeLog:

	PR tree-optimization/90662
	* tree-ssa-strlen.c (get_stridx): Handle simple VLAs and pointers
	to arrays.

gcc/testsuite/ChangeLog:

	PR tree-optimization/90662
	* gcc.dg/strlenopt-62.c: New test.
	* gcc.dg/strlenopt-63.c: New test.
	* gcc.dg/strlenopt-64.c: New test.

From-SVN: r272197

With the test-case of PR90009 we run into a SIGSEGV in nvptx_neuter_pars,
because par->join_insn and par->join_block are NULL.

Detect this problem earlier, by adding an assert in nvptx_find_par that
asserts that a fork cannot be paired with more than one join.

Build and tested on x86_64 with nvptx accelerator enabled.

2019-06-12  Tom de Vries  <tdevries@suse.de>

	PR tree-optimization/90009
	* config/nvptx/nvptx.c (nvptx_find_par): Assert fork has at most join.

From-SVN: r272189

Also fix a warning with -Wunused-parameter -Wsystem-headers.

	* include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
	(variant::emplace): Change static_assert messages from "should be"
	to "must be".
	(hash<monostate>::operator()): Remove name of unused parameter.

From-SVN: r272188

	* include/std/mutex (scoped_lock::~scoped_lock()): Use fold
	expression.

From-SVN: r272187

The std::to_chars functions from C++17 can be used to implement
std::to_string with much better performance than calling snprintf. Only
the __detail::__to_chars_len and __detail::__to_chars_10 functions are
needed for to_string, because it always outputs base 10 representations.

The return type of __detail::__to_chars_10 should not be declared before
C++17, so the function body is extracted into a new function that can be
reused by to_string and __detail::__to_chars_10.

The existing tests for to_chars rely on to_string to check for correct
answers. Now that they use the same code that doesn't actually ensure
correctness, so add new tests for std::to_string that compare against
printf output.

	* include/Makefile.am: Add new <bits/charconv.h> header.
	* include/Makefile.in: Regenerate.
	* include/bits/basic_string.h (to_string(int), to_string(unsigned))
	(to_string(long), to_string(unsigned long), to_string(long long))
	(to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
	* include/bits/charconv.h: New header.
	(__detail::__to_chars_len): Move here from <charconv>.
	(__detail::__to_chars_10_impl): New function extracted from
	__detail::__to_chars_10.
	* include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
	(__to_chars_unsigned_type): New class template that reuses
	__make_unsigned_selector_base::__select to pick a type.
	(__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
	(__detail::__to_chars_len): Move to new header.
	(__detail::__to_chars_10): Add inline specifier. Move code doing the
	output to __detail::__to_chars_10_impl and call that.
	* include/std/version (__cpp_lib_to_chars): Add, but comment out.
	* testsuite/21_strings/basic_string/numeric_conversions/char/
	to_string.cc: Fix reference in comment. Remove unused variable.
	* testsuite/21_strings/basic_string/numeric_conversions/char/
	to_string_int.cc: New test.

From-SVN: r272186

2019-06-12  Martin Liska  <mliska@suse.cz>

	* ggc-common.c (ggc_prune_overhead_list): Do not sanitize
	the created map.
	* hash-map.h: Add sanitize_eq_and_hash into ::hash_map.
	* mem-stats.h (mem_alloc_description::mem_alloc_description):
	Do not sanitize created maps.

From-SVN: r272183

From-SVN: r272182

	PR target/90811
	* cfgexpand.c (align_local_variable): Add really_expand argument,
	don't SET_DECL_ALIGN if it is false.
	(add_stack_var): Add really_expand argument, pass it through to
	align_local_variable.
	(expand_one_stack_var_1): Pass true as really_expand to
	align_local_variable.
	(expand_one_ssa_partition): Pass true as really_expand to
	add_stack_var.
	(expand_one_var): Pass really_expand through to add_stack_var.

From-SVN: r272181

This patch implements the usadv16qi and ssadv16qi standard names for arm.

The V16QImode variant is important as it is the most commonly used pattern:
reducing vectors of bytes into an int.
The midend expects the optab to compute the absolute differences of operands 1
and 2 and reduce them while widening along the way up to SImode. So the inputs
are V16QImode and the output is V4SImode.

I've based my solution on Aarch64 usadv16qi and ssadv16qi standard names
current implementation (r260437). This solution emits below sequence of
instructions:

        VABDL.u8        tmp, op1, op2   # op1, op2 lowpart
        VABAL.u8        tmp, op1, op2   # op1, op2 highpart
        VPADAL.u16      op3, tmp

So, for the code:

$ arm-none-linux-gnueabihf-gcc -S -O3 -march=armv8-a+simd -mfpu=auto -mfloat-abi=hard usadv16qi.c -dp

#define N 1024
unsigned char pix1[N];
unsigned char pix2[N];

int
foo (void)
{
  int i_sum = 0;
  int i;
  for (i = 0; i < N; i++)
    i_sum += __builtin_abs (pix1[i] - pix2[i]);
  return i_sum;
}

we now generate on arm:
foo:
        movw    r3, #:lower16:pix2      @ 57    [c=4 l=4]  *arm_movsi_vfp/3
        movt    r3, #:upper16:pix2      @ 58    [c=4 l=4]  *arm_movt/0
        vmov.i32        q9, #0  @ v4si  @ 3     [c=4 l=4]  *neon_movv4si/2
        movw    r2, #:lower16:pix1      @ 59    [c=4 l=4]  *arm_movsi_vfp/3
        movt    r2, #:upper16:pix1      @ 60    [c=4 l=4]  *arm_movt/0
        add     r1, r3, #1024   @ 8     [c=4 l=4]  *arm_addsi3/4
.L2:
        vld1.8  {q11}, [r3]!    @ 11    [c=8 l=4]  *movmisalignv16qi_neon_load
        vld1.8  {q10}, [r2]!    @ 10    [c=8 l=4]  *movmisalignv16qi_neon_load
        cmp     r1, r3  @ 21    [c=4 l=4]  *arm_cmpsi_insn/2
        vabdl.u8        q8, d20, d22    @ 12    [c=8 l=4]  neon_vabdluv8qi
        vabal.u8        q8, d21, d23    @ 15    [c=88 l=4]  neon_vabaluv8qi
        vpadal.u16      q9, q8  @ 16    [c=8 l=4]  neon_vpadaluv8hi
        bne     .L2             @ 22    [c=16 l=4]  arm_cond_branch
        vadd.i32        d18, d18, d19   @ 24    [c=120 l=4]  quad_halves_plusv4si
        vpadd.i32       d18, d18, d18   @ 25    [c=8 l=4]  neon_vpadd_internalv2si
        vmov.32 r0, d18[0]      @ 30    [c=12 l=4]  vec_extractv2sisi/1

instead of:
foo:
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        @ link register save eliminated.
        movw    r3, #:lower16:pix1
        movt    r3, #:upper16:pix1
        vmov.i32        q9, #0  @ v4si
        movw    r2, #:lower16:pix2
        movt    r2, #:upper16:pix2
        add     r1, r3, #1024
.L2:
        vld1.8  {q8}, [r3]!
        vld1.8  {q11}, [r2]!
        vmovl.u8 q10, d16
        cmp     r1, r3
        vmovl.u8 q8, d17
        vmovl.u8 q12, d22
        vmovl.u8 q11, d23
        vsub.i16        q10, q10, q12
        vsub.i16        q8, q8, q11
        vabs.s16        q10, q10
        vabs.s16        q8, q8
        vaddw.s16       q9, q9, d20
        vaddw.s16       q9, q9, d21
        vaddw.s16       q9, q9, d16
        vaddw.s16       q9, q9, d17
        bne     .L2
        vadd.i32        d18, d18, d19
        vpadd.i32       d18, d18, d18
        vmov.32 r0, d18[0]

2019-06-12  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>

        * config/arm/iterators.md (VABAL): New int iterator.
        * config/arm/neon.md (<sup>sadv16qi): New define_expand.
        * config/arm/unspecs.md ("unspec"): Define UNSPEC_VABAL_S, UNSPEC_VABAL_U
        values.

        * gcc.target/arm/ssadv16qi.c: New test.
        * gcc.target/arm/usadv16qi.c: Likewise.

From-SVN: r272180

2019-06-12  Martin Liska  <mliska@suse.cz>

	* value-prof.c (stream_out_histogram_value): Only first value
	can't be negative.

From-SVN: r272179

	PR c/90760
	* symtab.c (symtab_node::set_section): Allow being called on aliases
	as long as they aren't analyzed yet.

	* gcc.dg/pr90760.c: New test.

From-SVN: r272178

From-SVN: r272177