generic.texi (ANNOTATE_EXPR): Document 3rd operand.

* doc/generic.texi (ANNOTATE_EXPR): Document 3rd operand.
* cfgloop.h (struct loop): Add unroll field.
* function.h (struct function): Add has_unroll bitfield.
* gimplify.c (gimple_boolify) <ANNOTATE_EXPR>: Deal with unroll kind.
(gimplify_expr) <ANNOTATE_EXPR>: Propagate 3rd operand.
* loop-init.c (pass_loop2::gate): Return true if cfun->has_unroll.
(pass_rtl_unroll_loops::gate): Likewise.
* loop-unroll.c (decide_unrolling): Tweak note message.  Skip loops
for which loop->unroll==1.
(decide_unroll_constant_iterations): Use note for consistency and
take loop->unroll into account.  Return early if loop->unroll is set.
Fix thinko in existing test.
(decide_unroll_runtime_iterations): Use note for consistency and
take loop->unroll into account.
(decide_unroll_stupid): Likewise.
* lto-streamer-in.c (input_cfg): Read loop->unroll.
* lto-streamer-out.c (output_cfg): Write loop->unroll.
* tree-cfg.c (replace_loop_annotate_in_block) <annot_expr_unroll_kind>:
        New case.
(replace_loop_annotate) <annot_expr_unroll_kind>: Likewise.
(print_loop): Print loop->unroll if set.
* tree-core.h (enum annot_expr_kind): Add annot_expr_unroll_kind.
* tree-inline.c (copy_loops): Copy unroll and set cfun->has_unroll.
* tree-pretty-print.c (dump_generic_node) <annot_expr_unroll_kind>:
New case.
* tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Bail out if
loop->unroll is set and smaller than the trip count.  Otherwise bypass
entirely the heuristics if loop->unroll is set.  Remove dead note.
Fix off-by-one bug in other note.
(try_peel_loop): Bail out if loop->unroll is set.  Fix formatting.
(tree_unroll_loops_completely_1): Force unrolling if loop->unroll
is greater than 1.
(tree_unroll_loops_completely): Make static.
(pass_complete_unroll::execute): Use correct type for variable.
(pass_complete_unrolli::execute): Fix formatting.
* tree.def (ANNOTATE_EXPR): Add 3rd operand.
ada/
* gcc-interface/trans.c (gnat_gimplify_stmt) <LOOP_STMT>: Pass 3rd
operand to ANNOTATE_EXPR and also pass unrolling hints.
c/
* c-parser.c (c_parser_while_statement): Pass 3rd operand to
ANNOTATE_EXPR.
(c_parser_do_statement): Likewise.
(c_parser_for_statement): Likewise.
cp/
* pt.c (tsubst_expr) <ANNOTATE_EXPR>: Recurse on 3rd operand.
* semantics.c (finish_while_stmt_cond): Pass 3rd operand to
ANNOTATE_EXPR.
(finish_do_stmt): Likewise.
(finish_for_cond): Likewise.
fortran/
* trans-stmt.c (gfc_trans_forall_loop): Pass 3rd operand to
ANNOTATE_EXPR.

From-SVN: r255106

i386.h (TARGET_PREFER_AVX256): Also enable when TARGET_PREFER_AVX128 is set.

* config/i386/i386.h (TARGET_PREFER_AVX256): Also
enable when TARGET_PREFER_AVX128 is set.

From-SVN: r255105

ipa-profile.c (ipa_propagate_frequency_1): Use count instead of frequency.

* ipa-profile.c (ipa_propagate_frequency_1): Use count instead of
frequency.
* cgraph.c (cgraph_edge::dump_edge_flags): Dump sreal frequencies.
(cgraph_edge::maybe_hot_p): Use sreal frequencies.

From-SVN: r255104

ipa-fnsummary.c (record_modified_bb_info): Use sreal frequencies.

* ipa-fnsummary.c (record_modified_bb_info): Use sreal
frequencies. Fix estimation of aggregate parameters.

* gcc.dg/ipa/inline-1.c: Update template.

From-SVN: r255103

cgraphclones.c (cgraph_node::create_clone): Fix updating of profile when inlining.

* cgraphclones.c (cgraph_node::create_clone): Fix updating of profile
when inlining.

From-SVN: r255102

[libgccjit] Wrap RETURN_NULL_IF_FAIL_NONNULL_NUMERIC_TYPE in JIT_{BEGIN,END}_STMT.

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* libgccjit.c (RETURN_NULL_IF_FAIL_NONNULL_NUMERIC_TYPE): Wrap in
JIT_{BEGIN,END}_STMT.

From-SVN: r255101

[sh] Wrap ASM_OUTPUT_ADDR_VEC_ELT in do {} while (0)

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* config/sh/sh.h (ASM_OUTPUT_ADDR_VEC_ELT): Wrap in "do {} while (0)".

From-SVN: r255100

[libobjc] Wrap CLASS_TABLE_HASH in do {} while (0)

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* class.c (CLASS_TABLE_HASH): Wrap in "do {} while (0)".

From-SVN: r255099

[ft32] Remove semicolon after ASM_OUTPUT_ADDR_VEC_ELT

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* config/ft32/ft32.h (ASM_OUTPUT_ADDR_VEC_ELT): Remove semicolon after
macro.

From-SVN: r255098

re PR target/83111 ([sh] stack smashing detected in gen_udivsi3)

gcc/
PR target/83111
* config/sh/sh.md (udivsi3, divsi3, sibcall_value_pcrel,
sibcall_value_pcrel_fdpic): Use local variable instead of
operands[3].
(calli_tbr_rel): Add missing operand 2.
(call_valuei_tbr_rel): Add missing operand 3.

From-SVN: r255096

re PR middle-end/82253 (ICE in convert_move, at expr.c:604)

PR middle-end/82253
* expr.c (expand_assignment): For CONCAT to_rtx, complex type from and
bitpos/bitsize covering the whole destination, use store_expr only if
the complex mode is the same.  Otherwise, use expand_normal and if
it returns CONCAT, subreg each part separately instead of trying to
subreg the whole result.

* gfortran.dg/pr82253.f90: New test.

From-SVN: r255095

re PR fortran/82814 (ICE from submodule character function)

2017-11-23  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/82814
* trans-types.c (gfc_sym_type): If a character function result
is missing the charlen backend_decl, use the one from the name-
space procedure symbol, if present.

2017-11-23  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/82814
* gfortran.dg/submodule_31.f08: New test.

From-SVN: r255094

re PR tree-optimization/23094 (store ccp, or store copy prop misses an optimization)

2017-11-23  Richard Biener  <rguenther@suse.de>

PR tree-optimization/23094
* tree-ssa-sccvn.c (vuse_ssa_val): Handle VN_TOP when we
come here from walking over backedges in the first iteration.
(vn_reference_lookup_3): Skip clobbers that store the same value.

* gcc.dg/tree-ssa/ssa-fre-61.c: New testcase.

From-SVN: r255093

re PR tree-optimization/81403 (wrong code at -O3)

2017-11-23  Richard Biener  <rguenther@suse.de>

PR tree-optimization/81403
* tree-ssa-pre.c (get_representative_for): Add parameter specifying
a block we need a leader relative to.
(phi_translate_1): For nary processing require a leader from
get_representative_for given we run expression simplification
using match-and-simplify.  Remove previous fix.

From-SVN: r255092

re PR tree-optimization/83089 (ICE: Segmentation fault (in instantiate_scev_name))

2017-11-23  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83089
* gcc.dg/pr83089.c: Require pthread.

From-SVN: r255091

cmd/go, go/internal/gccgoimporter: pass -X to ar on AIX

    Reviewed-on: https://go-review.googlesource.com/72930

From-SVN: r255090

Daily bump.

From-SVN: r255089

gimple-ssa-evrp-analyze.c (evrp_range_analyzer::try_find_new_range): Use new method allocate_value_range rather than accessing the...

* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::try_find_new_range):
Use new method allocate_value_range rather than accessing the
vrp_value_range_pool data member directly.
* tree-vrp.c (simplify_stmt_for_jump_threading): Tweak slightly
to use extract_range_from_stmt method to avoid need for
extract_range_from_assignment method.
(vrp_prop::vrp_finalize): Use set_lattice_propagation_complete
method rather than setting values_propgated data member directly.
* vr-values.h (class vr_values): Privatize vrp_value_range_pool,
and values propagated data members and extract_range_from_assignment
method.  Reorder private data members to conform to standards.
Add new methods set_lattice_propagation_complete and
allocate_value_range.

From-SVN: r255086

* g++.dg/abi/pr68355.C: Don't expect tail call on ia32.

From-SVN: r255085

re PR c++/82401 (error: qsort comparator non-negative on sorted output: 1 in insert_late_enum_def_bindings on an invalid code)

PR c++/82401
* name-lookup.c (member_name_cmp): Return 0 if a == b.

* g++.dg/cpp0x/pr82401.C: New test.

From-SVN: r255084

re PR rtl-optimization/83030 (ICE in create_pseudo_cfg, at dwarf2cfi.c:2840)

PR rtl-optimization/83030
* doc/rtl.texi (Flags in an RTL Expression): Alphabetize, add entry
for CROSSING_JUMP_P and mention usage of 'jump' for JUMP_INSNs.
(Insns): Delete entry for REG_CROSSING_JUMP in register notes.
* bb-reorder.c (update_crossing_jump_flags): Do not test whether the
CROSSING_JUMP_P flag is already set before setting it.
* cfgrtl.c (fixup_partition_crossing): Likewise.
* reorg.c (relax_delay_slots): Do not consider a CROSSING_JUMP_P insn
as useless.

From-SVN: r255083

jit: update test suite for change to -Warray-bounds

jit.dg/test-error-array-bounds.c is a test of how libgccjit
handles errors coming from the middle-end, using -Warray-bounds as
an example.

It started failing as of r254830 (aka 987b3316c4e7c908e3c7d2151c20971f9707ad66),
due to that commit changing the wording of the message.

This commit fixes the jit testcase by updating it to use the new
wording.

gcc/testsuite/ChangeLog:
PR tree-optimization/82588
PR tree-optimization/82583
* jit.dg/test-error-array-bounds.c (verify_code): Update expected
error message from -Warray-bounds.

From-SVN: r255082

* g++.dg/graphite/pr41562.C: Add -Wno-return-type.

From-SVN: r255081

re PR libgomp/83106 (libgomp/target.c:2671:2: error: ‘strncat’ specified bound 5 equals source length [-Werror=stringop-overflow=])

PR libgomp/83106
* target.c (gomp_target_init): Compute lengths just once and
use them in both malloc size and subsequent copying.

From-SVN: r255080

simplify-rtx.c (simplify_binary_operation_1): Handle the case where both arguments are using gen_const_vec_series.

* simplify-rtx.c (simplify_binary_operation_1) <case VEC_SERIES>:
Handle the case where both arguments are using gen_const_vec_series.

From-SVN: r255079

Make shift argument to eoshift0 and eoshift2 be of type index_type

Test case that requires 4 GB RAM that exercises eoshift0:

program main
  implicit none
  integer(1) :: line(2_8**31+10)
  line = 42
  line = eoshift(line, 2_8**31+7)
  print *, line(1:4)
  print *, line((ubound(line, 1, kind=8)-4):ubound(line, 1, kind=8))
end program main

Before patch:
❯ ./a.out
    0    0    0    0
    42   42   42   42   42

With patch:
❯ ./a.out
   42   42   42    0
   0    0    0    0    0

Regtested on x86_64-pc-linux-gnu.

libgfortran/ChangeLog:

2017-11-22  Janne Blomqvist  <jb@gcc.gnu.org>

        * intrinsics/eoshift0.c (eoshift0): Make shift an index_type.
        * intrinsics/eoshift2.c (eoshift2): Make shift an index_type.

From-SVN: r255077

C/C++: fix quoting of "aka" typedef information (PR 62170)

PR 62170 describes a problem with how the quoting in pp_format
interacts with the "aka" information for typedefs in %qT for
the C family of frontends, and also now for %qH and %qI in the
C++ frontend: we print:

  'Py_ssize_t* {aka int*}'
   ^^^^^^^^^^^^^^^^^^^^^^ colorized as "quote"

i.e.
  '[START_COLOR]Py_ssize_t* {aka int*}[END_COLOR]'

when we should print:

  'Py_ssize_t*' {aka 'int*'}
   ^^^^^^^^^^^        ^^^^ colorized as "quote"

i.e.
  '[START_COLOR]Py_ssize_t*[END_COLOR]' {aka '[START_COLOR]int*[END_COLOR]'}

where the opening and closing quote characters and colorization are
added by the 'q' handling within pp_format.

This patch fixes the quoting by updating the %T handling in C and C++
and the %H/%I handling in C++ to insert the quoting appropriately.
It converts the "quote" param of the pp_format_decoder callback from
bool to bool *, allowing for the %T and %H/%I handlers to write
false back to it, to avoid printing the closing quote for the cases
like the above where the trailing closing quote isn't needed.

It introduces pp_begin_quote/pp_end_quote to simplify this.  These
take a "bool show_color", rather than using "pp_show_color (pp)"
since cxx_pp's pp_show_color isn't currently initialized (since
cxx_initialize_diagnostics happens before diagnostic_color_init).

gcc/c/ChangeLog:
PR c++/62170
* c-objc-common.c (c_tree_printer): Convert penultimate param from
bool to bool *.  Within '%T' handling, if showing an "aka", use
"quoted" param to add appropriate quoting.

gcc/cp/ChangeLog:
PR c++/62170
* error.c (type_to_string): Add leading comment.  Add params
"postprocessed", "quote", and "show_color", using them to fix
quoting of the "aka" for types involving typedefs.
(arg_to_string): Update for new params to type_to_string.
(cxx_format_postprocessor::handle): Likewise.
(cp_printer): Convert penultimate param from bool to bool *.
Update call to type_to_string and calls to
defer_phase_2_of_type_diff.

gcc/fortran/ChangeLog:
PR c++/62170
* error.c (gfc_notify_std): Convert "quoted" param from bool to
bool *.

gcc/ChangeLog:
PR c++/62170
* pretty-print.c (pp_format): Move quoting implementation to
pp_begin_quote and pp_end_quote.  Update pp_format_decoder call
to pass address of "quote" local.
(pp_begin_quote): New function.
(pp_end_quote): New function.
* pretty-print.h (printer_fn): Convert penultimate param from bool
to bool *.
(pp_begin_quote): New decl.
(pp_end_quote): New decl.
* tree-diagnostic.c (default_tree_printer): Convert penultimate
param from bool to bool *.
* tree-diagnostic.h (default_tree_printer): Likewise.

gcc/testsuite/ChangeLog:
PR c++/62170
* g++.dg/diagnostic/aka1.C: Update expected error messages to
reflect fixes to quoting.
* g++.dg/diagnostic/aka2.C: New test case.
* g++.dg/parse/error55.C: Update expected error messages to
reflect fixes to quoting.
* gcc.dg/diag-aka-1.c: Likewise.
* gcc.dg/diag-aka-2.c: New test case.
* gcc.dg/pr13804-1.c: Update expected error messages to reflect
fixes to quoting.
* gcc.dg/pr56980.c: Likewise.
* gcc.dg/pr65050.c: Likewise.
* gcc.dg/redecl-14.c: Likewise.
* gcc.dg/utf16-4.c Likewise.
* gcc.target/i386/sse-vect-types.c (__m128d): Likewise.
* obj-c++.dg/invalid-type-1.mm: Likewise.
* objc.dg/proto-lossage-4.m: Likewise.

From-SVN: r255076

target-supports.exp (check_effective_target_bswap16): Remove

* lib/target-supports.exp (check_effective_target_bswap16): Remove
(check_effective_target_bswap32): Ditto.
(check_effective_target_bswap64): Ditto.
* gcc.dg/optimize-bswaphi-1.c: Use bswap effective
target instead of bswap16.
* gcc.dg/optimize-bswapsi-1.c: Use bswap effective
target instead of bswap32.
* gcc.dg/optimize-bswapsi-2.c: Ditto.
* gcc.dg/optimize-bswapsi-3.c: Ditto.
* gcc.dg/optimize-bswapsi-4.c: Ditto.
* gcc.dg/optimize-bswapsi-5.c: Ditto.
* gcc.dg/pr77673.c: Ditto.
* gcc.dg/optimize-bswapdi-1.c: Use bswap effective
target instead of bswap64.
* gcc.dg/optimize-bswapdi-2.c: Ditto.
* gcc.dg/optimize-bswapdi-3.c: Ditto.

From-SVN: r255075

* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::evrp_range_analyzer)
Initialize vr_values.
(evrp_range_analyzer::try_find_new_range): Call methods attached to
vr_values via vr_values class instance rather than delegators.
(evrp_range_analyzer::record_ranges_from_phis): Likewise.
(evrp_range_analyzer::record_ranges_from_stmt): Likewise.
(evrp_range_analyzer::push_value_range): Likewise.
(evrp_range_analyzer::pop_value_range): Likewise.
* gimple-ssa-evrp-analyze.h (class evrp_range_analyzer): Remove
most delegators.  Those remaining are exposed as public interfaces.
Make vr_values a pointer and private.
(evrp_range_analyzer::~evrp_range_analyzer): Delete the attached
vr_values.
(evrp_range_analyzer::get_vr_value): New method.
* gimple-ssa-evrp.c (class evrp_folder): Use DISABLE_COPY_AND_ASSIGN.
(evrp_folder::evrp_folder): New ctor to initialize vr_values.
(class evrp_dom_walker): Attach evrp_folder class, initialize
it in the ctor.  Remove temporary delegators.
(evrp_dom_walker::before_dom_children): Call methods in attached
evrp_range_analyzer class via class instance pointer.  Use
free value_range_constant_singleton to remove need for
op_with_constant_singleton_value delegator method.  Do not
create a vrp_prop class instance for every call!  Narrow
scope of a couple variables.
(evrp_dom_walker::cleanup): Call methods in attached
evrp_range_analyzer class via class instance pointer.
* vr-values.h (class vr_values): Privatize many methods and
data members.

From-SVN: r255074

Replace REDUC_*_EXPRs with internal functions.

This patch replaces the REDUC_*_EXPR tree codes with internal functions.
This is needed so that the upcoming in-order reductions can also use
internal functions without too much complication.

2017-11-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* tree.def (REDUC_MAX_EXPR, REDUC_MIN_EXPR, REDUC_PLUS_EXPR): Delete.
* cfgexpand.c (expand_debug_expr): Remove handling for them.
* expr.c (expand_expr_real_2): Likewise.
* fold-const.c (const_unop): Likewise.
* optabs-tree.c (optab_for_tree_code): Likewise.
* tree-cfg.c (verify_gimple_assign_unary): Likewise.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node): Likewise.
(op_code_prio): Likewise.
(op_symbol_code): Likewise.
* internal-fn.def (DEF_INTERNAL_SIGNED_OPTAB_FN): Define.
(IFN_REDUC_PLUS, IFN_REDUC_MAX, IFN_REDUC_MIN): New internal functions.
* internal-fn.c (direct_internal_fn_optab): New function.
(direct_internal_fn_array, direct_internal_fn_supported_p
(internal_fn_expanders): Handle DEF_INTERNAL_SIGNED_OPTAB_FN.
* fold-const-call.c (fold_const_reduction): New function.
(fold_const_call): Handle CFN_REDUC_PLUS, CFN_REDUC_MAX and
CFN_REDUC_MIN.
* tree-vect-loop.c: Include internal-fn.h.
(reduction_code_for_scalar_code): Rename to...
(reduction_fn_for_scalar_code): ...this and return an internal
function.
(vect_model_reduction_cost): Take an internal_fn rather than
a tree_code.
(vect_create_epilog_for_reduction): Likewise.  Build calls rather
than assignments.
(vectorizable_reduction): Use internal functions rather than tree
codes for the reduction operation.  Update calls to the functions
above.
* config/aarch64/aarch64-builtins.c (aarch64_gimple_fold_builtin):
Use calls to internal functions rather than REDUC tree codes.
* config/aarch64/aarch64-simd.md: Update comment accordingly.

From-SVN: r255073

PR 83097 Use __BYTE_ORDER__ predefined macro instead of runtime check

By using the __BYTE_ORDER__ predefined macro we don't need the
determine_endianness function anymore.

Regtested on x86_64-pc-linux-gnu.

libgfortran/ChangeLog:

2017-11-22  Janne Blomqvist  <jb@gcc.gnu.org>

        PR libfortran/83097
* io/inquire.c (inquire_via_unit): Use __BYTE_ORDER__ predefined
macro.
* io/open.c (st_open): Likewise.
* io/transfer.c (data_transfer_init): Likewise.
* io/write.c (btoa_big): Likewise.
(otoa_big): Likewise.
(ztoa_big): Likewise.
* libgfortran.h (big_endian): Remove variable.
(GFOR_POINTER_TO_L1): Use __BYTE_ORDER__ macro.
* runtime/main.c (determine_endianness): Remove function.
(init): Remove call to determine_endianness.
* runtime/minimal.c: Remove setting big_endian variable.

From-SVN: r255072

[PATCH] Add myself as GCC maintainer

*** ChangeLog ***

2017-11-22  Sudakshina Das  <sudi.das@arm.com>

* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r255071

re PR fortran/36313 ([F03] {MIN,MAX}{LOC,VAL} should accept character arguments)

2017-11-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/36313
* Makefile.am: Add i_maxloc0s_c, i_maxloc1s_c, i_maxloc2s_c,
i_minloc0s_c, i_minloc1s_c and i_minloc2s_c.
* Makefile.in: Regenerated.
        * generated/maxloc0_16_s1.c: New file.
        * generated/maxloc0_16_s4.c: New file.
        * generated/maxloc0_4_s1.c: New file.
        * generated/maxloc0_4_s4.c: New file.
        * generated/maxloc0_8_s1.c: New file.
        * generated/maxloc0_8_s4.c: New file.
        * generated/maxloc1_16_s1.c: New file.
        * generated/maxloc1_16_s4.c: New file.
        * generated/maxloc1_4_s1.c: New file.
        * generated/maxloc1_4_s4.c: New file.
        * generated/maxloc1_8_s1.c: New file.
        * generated/maxloc1_8_s4.c: New file.
        * generated/maxloc2_16_s1.c: New file.
        * generated/maxloc2_16_s4.c: New file.
        * generated/maxloc2_4_s1.c: New file.
        * generated/maxloc2_4_s4.c: New file.
        * generated/maxloc2_8_s1.c: New file.
        * generated/maxloc2_8_s4.c: New file.
        * generated/minloc0_16_s1.c: New file.
        * generated/minloc0_16_s4.c: New file.
        * generated/minloc0_4_s1.c: New file.
        * generated/minloc0_4_s4.c: New file.
        * generated/minloc0_8_s1.c: New file.
        * generated/minloc0_8_s4.c: New file.
        * generated/minloc1_16_s1.c: New file.
        * generated/minloc1_16_s4.c: New file.
        * generated/minloc1_4_s1.c: New file.
        * generated/minloc1_4_s4.c: New file.
        * generated/minloc1_8_s1.c: New file.
        * generated/minloc1_8_s4.c: New file.
        * generated/minloc2_16_s1.c: New file.
        * generated/minloc2_16_s4.c: New file.
        * generated/minloc2_4_s1.c: New file.
        * generated/minloc2_4_s4.c: New file.
        * generated/minloc2_8_s1.c: New file.
        * generated/minloc2_8_s4.c: New file.
        * m4/iforeach-s.m4: New file.
        * m4/ifunction-s.m4: New file.
        * m4/maxloc0s.m4: New file.
        * m4/maxloc1s.m4: New file.
        * m4/maxloc2s.m4: New file.
        * m4/minloc0s.m4: New file.
        * m4/minloc1s.m4: New file.
        * m4/minloc2s.m4: New file.
* gfortran.map: Add new functions.
* libgfortran.h: Add gfc_array_s1 and gfc_array_s4.

2017-11-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/36313
* check.c (int_or_real_or_char_check_f2003): New function.
* iresolve.c (gfc_resolve_maxloc): Add number "2" for
character arguments and rank-zero return value.
(gfc_resolve_minloc): Likewise.
* trans-intrinsic.c (gfc_conv_intrinsic_minmaxloc): Handle case of
character arguments and rank-zero return value by removing
unneeded arguments and calling the library function.

2017-11-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/36313
* gfortran.dg/maxloc_string_1.f90: New test.
* gfortran.dg/minloc_string_1.f90: New test.

From-SVN: r255070

vxworks.c (vxworks_override_options): Pick default dwarf version from macro value, VXWORKS_DWARF_VERSION_DEFAULT.

2017-11-22  Olivier Hainque  <hainque@adacore.com>

       * config/vxworks.c (vxworks_override_options): Pick default
dwarf version from macro value, VXWORKS_DWARF_VERSION_DEFAULT.
       * config/vxworks.h: Define VXWORKS_DWARF_VERSION_DEFAULT and
       DWARF_GNAT_ENCODINGS_DEFAULT.
       * config/vxworksae.h: Likewise.

From-SVN: r255069

Avoid two_valued_val_range_p for pointers.

2017-11-22  Marc Glisse  <marc.glisse@inria.fr>

PR tree-optimization/83104
gcc/
* vr-values.c (simplify_stmt_using_ranges): Check integral argument,
not result.

gcc/testsuite/
* gcc.c-torture/compile/pr83104.c: New file.

From-SVN: r255068

[ARM] Fix more -Wreturn-type fallout (gcc.target/arm/pr56184.C).

2017-11-22  Christophe Lyon  <christophe.lyon@linaro.org>

* gcc.target/arm/pr56184.C: Add -Wno-return-type to dg-options.

From-SVN: r255067

re PR c++/60336 (empty struct value is passed differently in C and C++)

PR c++/60336
PR middle-end/67239
PR target/68355
* c-decl.c (grokdeclarator): Set DECL_PADDING_P on unnamed bit-fields.

* class.c (layout_class_type): Set DECL_PADDING_P on padding.
* decl.c (cxx_init_decl_processing): Set TRANSLATION_UNIT_WARN_EMPTY_P.
(grokdeclarator): Set DECL_PADDING_P on unnamed bit-fields.

* lto.c (compare_tree_sccs_1): Compare TYPE_EMPTY_P and DECL_PADDING_P.

* calls.c (initialize_argument_information): Call
warn_parameter_passing_abi target hook.
(store_one_arg): Use 0 for empty record size.  Don't push 0 size
argument onto stack.
(must_pass_in_stack_var_size_or_pad): Return false for empty types.
* common.opt: Update -fabi-version description.
* config/i386/i386.c (init_cumulative_args): Set cum->warn_empty.
(ix86_gimplify_va_arg): Call arg_int_size_in_bytes instead of
int_size_in_bytes.
(ix86_is_empty_record): New function.
(ix86_warn_parameter_passing_abi): New function.
(TARGET_EMPTY_RECORD_P): Redefine.
(TARGET_WARN_PARAMETER_PASSING_ABI): Redefine.
* config/i386/i386.h (CUMULATIVE_ARGS): Add warn_empty.
* doc/tm.texi: Regenerated.
* doc/tm.texi.in (TARGET_EMPTY_RECORD_P,
TARGET_WARN_PARAMETER_PASSING_ABI): Add.
* dwarf2out.c (get_ultimate_context): Move to tree.c.
* explow.c (hard_function_value): Call arg_int_size_in_bytes
instead of int_size_in_bytes.
* expr.c (copy_blkmode_to_reg): Likewise.
* function.c (aggregate_value_p): Return 0 for empty types.
(assign_parm_find_entry_rtl): Call warn_parameter_passing_abi target hook.
(locate_and_pad_parm): Call arg size_in_bytes instead
size_in_bytes.
* lto-streamer-out.c (hash_tree): Hash TYPE_EMPTY_P and DECL_PADDING_P.
* stor-layout.c (finalize_type_size): Set TYPE_EMPTY_P.
* target.def (empty_record_p, warn_parameter_passing_abi): New target
hooks.
* targhooks.c (hook_void_CUMULATIVE_ARGS_tree): New hook.
(std_gimplify_va_arg_expr): Skip empty records.  Call
arg_size_in_bytes instead size_in_bytes.
* targhooks.h (hook_void_CUMULATIVE_ARGS_tree): Declare.
* tree-core.h (tree_type_common): Add empty_flag.
(tree_decl_common): Update comments.
* tree-streamer-in.c (unpack_ts_decl_common_value_fields): Stream
DECL_PADDING_P.
(unpack_ts_type_common_value_fields): Stream TYPE_EMPTY_P.
* tree-streamer-out.c (pack_ts_decl_common_value_fields): Stream
DECL_PADDING_P.
(pack_ts_type_common_value_fields): Stream TYPE_EMPTY_P.
* tree.c (default_is_empty_type): New function.
(default_is_empty_record): New function.
(arg_int_size_in_bytes): New function.
(arg_size_in_bytes): New function.
(get_ultimate_context): New function.
* tree.h: Define TYPE_EMPTY_P, DECL_PADDING_P and
TRANSLATION_UNIT_WARN_EMPTY_P.
(default_is_empty_record, arg_int_size_in_bytes,
arg_size_in_bytes, get_ultimate_context): Declare.

* g++.dg/abi/empty12.C: New test.
* g++.dg/abi/empty12.h: New test.
* g++.dg/abi/empty12a.c: New test.
* g++.dg/abi/empty13.C: New test.
* g++.dg/abi/empty13.h: New test.
* g++.dg/abi/empty13a.c: New test.
* g++.dg/abi/empty14.C: New test.
* g++.dg/abi/empty14.h: New test.
* g++.dg/abi/empty14a.c: New test.
* g++.dg/abi/empty15.C: New test.
* g++.dg/abi/empty15.h: New test.
* g++.dg/abi/empty15a.c: New test.
* g++.dg/abi/empty16.C: New test.
* g++.dg/abi/empty16.h: New test.
* g++.dg/abi/empty16a.c: New test.
* g++.dg/abi/empty17.C: New test.
* g++.dg/abi/empty17.h: New test.
* g++.dg/abi/empty17a.c: New test.
* g++.dg/abi/empty18.C: New test.
* g++.dg/abi/empty18.h: New test.
* g++.dg/abi/empty18a.c: New test.
* g++.dg/abi/empty19.C: New test.
* g++.dg/abi/empty19.h: New test.
* g++.dg/abi/empty19a.c: New test.
* g++.dg/abi/empty20.C: New test.
* g++.dg/abi/empty21.C: New test.
* g++.dg/abi/empty22.C: New test.
* g++.dg/abi/empty22.h: New test.
* g++.dg/abi/empty22a.c: New test.
* g++.dg/abi/empty23.C: New test.
* g++.dg/abi/empty24.C: New test.
* g++.dg/abi/empty25.C: New test.
* g++.dg/abi/empty25.h: New test.
* g++.dg/abi/empty25a.c: New test.
* g++.dg/abi/empty26.C: New test.
* g++.dg/abi/empty26.h: New test.
* g++.dg/abi/empty26a.c: New test.
* g++.dg/abi/empty27.C: New test.
* g++.dg/abi/empty28.C: New test.
* g++.dg/abi/pr60336-1.C: New test.
* g++.dg/abi/pr60336-10.C: New test.
* g++.dg/abi/pr60336-11.C: New test.
* g++.dg/abi/pr60336-12.C: New test.
* g++.dg/abi/pr60336-2.C: New test.
* g++.dg/abi/pr60336-3.C: New test.
* g++.dg/abi/pr60336-4.C: New test.
* g++.dg/abi/pr60336-5.C: New test.
* g++.dg/abi/pr60336-6.C: New test.
* g++.dg/abi/pr60336-7.C: New test.
* g++.dg/abi/pr60336-8.C: New test.
* g++.dg/abi/pr60336-9.C: New test.
* g++.dg/abi/pr68355.C: New test.
* g++.dg/lto/pr60336_0.C: New test.

Co-Authored-By: H.J. Lu <hongjiu.lu@intel.com>
Co-Authored-By: Jason Merrill <jason@redhat.com>
From-SVN: r255066

[ARM] Factor out CMSE register clearing code

Functions cmse_nonsecure_call_clear_caller_saved and
cmse_nonsecure_entry_clear_before_return both contain very similar code
to clear registers. What's worse, they differ slightly at times so if a
bug is found in one careful thoughts is needed to decide whether the
other function needs fixing too.

This commit addresses the situation by factoring the two pieces of code
into a new function. In doing so the code generated to clear VFP
registers in cmse_nonsecure_call now uses the same sequence as
cmse_nonsecure_entry functions. Tests expectation are thus updated
accordingly.

2017-11-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.c (cmse_clear_registers): New function.
    (cmse_nonsecure_call_clear_caller_saved): Replace register clearing
    code by call to cmse_clear_registers.
    (cmse_nonsecure_entry_clear_before_return): Likewise.

    gcc/testsuite/
    * gcc.target/arm/cmse/mainline/hard-sp/cmse-13.c: Adapt expectations
    to vmov instructions now generated.
    * gcc.target/arm/cmse/mainline/hard-sp/cmse-7.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard-sp/cmse-8.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard/cmse-13.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard/cmse-7.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard/cmse-8.c: Likewise.

From-SVN: r255065

2017-11-22  Tamar Christina  <tamar.christina@arm.com>

* config/arm/arm_neon.h (vdot_u32, vdotq_u32)
(vdot_s32, vdotq_s32): New.
(vdot_lane_u32, vdotq_lane_u32): New.
(vdot_lane_s32, vdotq_lane_s32): New.

gcc/testsuite/
2017-11-22  Tamar Christina  <tamar.christina@arm.com>

* gcc.target/arm/simd/vdot-compile.c: New.
* gcc.target/arm/simd/vect-dot-qi.h: New.
* gcc.target/arm/simd/vect-dot-s8.c: New.
* gcc.target/arm/simd/vect-dot-u8.c: New

From-SVN: r255064

target-supports.exp (check_effective_target_bswap16): Do not skip on alpha and x86 targets.

* lib/target-supports.exp (check_effective_target_bswap16):
Do not skip on alpha and x86 targets.

From-SVN: r255063

compiler: make comparison operator() methods const

    This is required for new versions of libstdc++ in C++17 mode.

    Fixes GCC PR 83102.

    Reviewed-on: https://go-review.googlesource.com/79396

From-SVN: r255062

[ARM] Fix test armv8_2-fp16-move-1.c

2017-11-22  Sudakshina Das  <sudi.das@arm.com>

* gcc.target/arm/armv8_2-fp16-move-1.c: Add -mfloat-abi=hard option.

From-SVN: r255061

PR82547: Undetected overflow for UNSIGNED wide_ints

wi::add_large and wi::sub_large weren't setting the overflow bit
correctly for unsigned operations if the result needed fewer HWIs
than the precision.

2017-11-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR middle-end/82547
* wide-int.cc (wi::add_large, wi::sub_large): Fix overflow detection
for unsigned values with fewer HWIs than the precision.
(test_overflow): New function.
(wide_int_cc_tests): Call it.

From-SVN: r255059

PR83004: Accidental change to pr81136.c for VECTOR_BITS==128

r254589 was supposed to leave tests unchanged for the default
VECTOR_BITS==128, but I must have got my sums wrong on pr81136.c.

2017-11-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/testsuite/
PR testsuite/83004
* gcc.dg/vect/pr81136.c: Restore previous alignment of 32
in the default case.

From-SVN: r255058

Fix calculation of ptr_mode for MODE_PARTIAL_INT Pmode

This patch fixes a regression caused by r251469, where I'd incorrectly
converted a call to mode_for_size that sometimes needs MODE_PARTIAL_INTs.

2017-11-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* emit-rtl.c (init_derived_machine_modes): Make sure ptr_mode
has the same mode class as Pmode.

From-SVN: r255057

arm.c (cmse_nonsecure_call_clear_caller_saved): Get rid of padding_bits_to_clear_ptr.

2017-11-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.c (cmse_nonsecure_call_clear_caller_saved): Get rid of
    padding_bits_to_clear_ptr.
    (cmse_nonsecure_entry_clear_before_return): Likewise.

From-SVN: r255056

[ARM] Use bitmap to control cmse_nonsecure_call register clearing

As part of r253256, cmse_nonsecure_entry_clear_before_return has been
rewritten to use auto_sbitmap instead of an integer bitfield to control
which register needs to be cleared. This commit continues this work in
cmse_nonsecure_call_clear_caller_saved.

2017-11-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.c (cmse_nonsecure_call_clear_caller_saved): Use
    auto_sbitap instead of integer bitfield to control register needing
    clearing.

From-SVN: r255055

re PR tree-optimization/83044 (ice in contains_struct_check)

PR tree-optimization/83044
* tree-vrp.c (vrp_prop::check_array_ref): If eltsize is not
INTEGER_CST or is 0, clear up_bound{,_p1} and later ignore tests
that need the upper bound.  Subtract offset from
get_addr_base_and_unit_offset only if positive and subtract it
before division by eltsize rather than after it.

* gcc.dg/pr83044.c: New test.
* c-c++-common/Warray-bounds.c (fb): Fix up MAX value.

From-SVN: r255054

re PR fortran/79072 (ICE with class(*) pointer function result and character value)

2017-11-22  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/79072
* trans-stmt.c (trans_associate_var): Weaken the over strong
condition for using the fake result decl.

2017-11-22  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/79072
* gfortran.dg/class_result_6.f90: New test for comment 10 of
the PR.

From-SVN: r255053

PR go/83102 relax std::set checks for invocable comparison object

PR go/83102
* include/bits/stl_tree.h (_Rb_tree): Relax invocable checks for
comparison object pre-C++17.

From-SVN: r255052

re PR debug/83084 (-fcompare-debug failure on ppc64le)

PR debug/83084
* valtrack.c (propagate_for_debug_subst, propagate_for_debug): Reset
debug insns if they would contain UNSPEC_VOLATILE or volatile asm.
(dead_debug_insert_temp): Likewise, but also ignore even non-volatile
asm.

* g++.dg/opt/pr83084.C: New test.

From-SVN: r255051

re PR middle-end/82875 (ICE at -Os on valid code on x86_64-linux-gnu: in find_widening_optab_handler_and_mode, at optabs-query.c:414)

PR middle-end/82875
* optabs.c (expand_doubleword_mult, expand_binop): Before calling
expand_binop with *mul_widen_optab, make sure at least one of the
operands doesn't have VOIDmode.

* gcc.dg/pr82875.c: New test.
* gcc.c-torture/compile/pr82875.c: New test.

From-SVN: r255050

re PR debug/83034 (ice in mem_loc_descriptor, at dwarf2out.c :15669)

PR debug/83034
* dwarf2out.c (mem_loc_descriptor): Handle VEC_SERIES.

* gcc.dg/pr83034.c: New test.

From-SVN: r255049

re PR rtl-optimization/82044 (runtime signed integer overflow in check_mem_read_rtx() and all_positions_needed_p() in dse.c)

PR rtl-optimization/82044
PR tree-optimization/82042
* dse.c (record_store): Check for overflow.
(check_mem_read_rtx): Properly check for overflow if width == -1, call
add_wild_read instead of clear_rhs_from_active_local_stores on
overflow and log it into dump_file.

From-SVN: r255048

gimple-iterator.c (gimple_find_edge_insert_loc): Ignore fake edges to exit when looking for a place to insert.

2017-11-22  Richard Biener  <rguenther@suse.de>

* gimple-iterator.c (gimple_find_edge_insert_loc): Ignore
fake edges to exit when looking for a place to insert.
* tree-ssa-pre.c (clear_expression_ids): Inline into callers
and remove.
(insert_into_preds_of_block): Commit edge insertion immediately,
assert that doesn't require new BBs.
(fini_pre): Release expressions.
(pass_pre::execute): Shuffle things around a bit, if the fn
is too large do not compute AVAIL either as this is really the
quadratic bit.

From-SVN: r255047

PR 83070 Fix -Wsign-compare warning

2017-11-22  Janne Blomqvist  <jb@gcc.gnu.org>

        PR libfortran/83070
        * intrinsics/eoshift0.c (eoshift0): Fix -Wsign-compare warning by
        making a_ex and r_ex index_type instead of size_t.

From-SVN: r255045

re PR tree-optimization/83089 (ICE: Segmentation fault (in instantiate_scev_name))

2017-11-22  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83089
* tree-if-conv.c (pass_if_conversion::execute): If anything
changed reset SCEV and free the number of iteration estimates.

* gcc.dg/pr83089.c: New testcase.

From-SVN: r255044

libgo: don't use grep -q in mksigtab.sh

    Solaris grep does not support the -q option.

    Reviewed-on: https://go-review.googlesource.com/79239

From-SVN: r255042

Daily bump.

From-SVN: r255041

C: don't suggest names that came from earlier failures (PR c/83056)

PR c/83056 reports an issue affecting trunk and gcc-7 in which
the C frontend's implementation of lookup_name_fuzzy uses undeclared
identifiers as suggestions when encountering subsequent undeclared
identifiers.

The fix is to filter out the names bound to error_mark_node
in lookup_name_fuzzy.

The C++ frontend is unaffected, as it already does this.

gcc/c/ChangeLog:
PR c/83056
* c-decl.c (lookup_name_fuzzy): Don't suggest names that came from
earlier failed lookups.

gcc/testsuite/ChangeLog:
PR c/83056
* gcc.dg/spellcheck-pr83056.c: New test case.

From-SVN: r255038

re PR tree-optimization/82945 (add warning for passing non-strings to functions that expect string arguments)

gcc/ChangeLog:

PR tree-optimization/82945
* calls.h (warn_nonstring_bound): Remove unused function.

From-SVN: r255036

PR libstdc++/48101 improve errors for invalid container specializations

PR libstdc++/48101
* include/bits/allocator.h (allocator<const _Tp>)
(allocator<volatile _Tp>, allocator<const volatile _Tp>): Add partial
specializations.
* include/bits/forward_list.h (forward_list): Add static assertions.
* include/bits/hashtable.h (__cache_default): Use
__is_nothrow_invocable instead of __is_noexcept_hash.
(_Hashtable): Add static assertions.
* include/bits/hashtable_policy.h (__is_noexcept_hash): Remove.
* include/bits/stl_deque.h (deque): Add static assertions.
* include/bits/stl_function.h (_Identity<const _Tp>): Add partial
specialization.
* include/bits/stl_list.h (list): Add static assertions.
* include/bits/stl_map.h (map): Likewise.
* include/bits/stl_multimap.h (multimap): Likewise.
* include/bits/stl_multiset.h (multiset): Likewise.
* include/bits/stl_set.h (set): Likewise.
* include/bits/stl_tree.h (_Rb_tree): Likewise.
* include/bits/stl_vector.h (vector): Likewise.
* include/bits/unordered_map.h (unordered_map, unordered_multimap):
Use typename instead of class in template-parameter-list and remove
spaces.
* include/bits/unordered_set.h (unordered_set, unordered_multiset):
Likewise.
* testsuite/23_containers/deque/48101-2_neg.cc: New test.
* testsuite/23_containers/deque/48101_neg.cc: New test.
* testsuite/23_containers/forward_list/48101-2_neg.cc: New test.
* testsuite/23_containers/forward_list/48101_neg.cc: New test.
* testsuite/23_containers/list/48101-2_neg.cc: New test.
* testsuite/23_containers/list/48101_neg.cc: New test.
* testsuite/23_containers/map/48101-2_neg.cc: New test.
* testsuite/23_containers/map/48101_neg.cc: New test.
* testsuite/23_containers/map/operations/31440.cc: Fix comparison
object to have const-qualified call operator.
* testsuite/23_containers/multimap/48101-2_neg.cc: New test.
* testsuite/23_containers/multimap/48101_neg.cc: New test.
* testsuite/23_containers/multiset/48101-2_neg.cc: New test.
* testsuite/23_containers/multiset/48101_neg.cc: New test.
* testsuite/23_containers/set/48101-2_neg.cc: New test.
* testsuite/23_containers/set/48101_neg.cc: New test.
* testsuite/23_containers/unordered_map/48101-2_neg.cc: New test.
* testsuite/23_containers/unordered_map/48101_neg.cc: New test.
* testsuite/23_containers/unordered_multimap/48101-2_neg.cc: New test.
* testsuite/23_containers/unordered_multimap/48101_neg.cc: New test.
* testsuite/23_containers/unordered_multiset/48101-2_neg.cc: New test.
* testsuite/23_containers/unordered_multiset/48101_neg.cc: New test.
* testsuite/23_containers/unordered_set/48101-2_neg.cc: New test.
* testsuite/23_containers/unordered_set/48101_neg.cc: New test.
* testsuite/23_containers/unordered_set/instantiation_neg.cc: Adjust
dg-error line number.
* testsuite/23_containers/vector/48101-2_neg.cc: New test.
* testsuite/23_containers/vector/48101_neg.cc: New test.

From-SVN: r255035

PR tree-optimization/82945 - add warning for passing non-strings to functions that expect string arguments

gcc/ChangeLog:

PR tree-optimization/82945
* builtins.c (expand_builtin_strlen): Call maybe_warn_nonstring_arg.
* calls.h (maybe_warn_nonstring_arg): Declare new function.
* calls.c (get_attr_nonstring_decl, maybe_warn_nonstring_arg): New
functions.
(initialize_argument_information): Call maybe_warn_nonstring_arg.
* calls.h (get_attr_nonstring_decl): Declare new function.
* doc/extend.texi (attribute nonstring): Update.
* gimple-fold.c (gimple_fold_builtin_strncpy): Call
get_attr_nonstring_decl and handle it.
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Same.  Improve
detection of nul-termination.
(strlen_to_stridx): Change to a pointer.
(handle_builtin_strlen, handle_builtin_stxncpy): Adjust.
(pass_strlen::execute): Same.

gcc/testsuite/ChangeLog:

PR tree-optimization/82945
* c-c++-common/Wstringop-truncation-2.c: New test.
* c-c++-common/Wstringop-truncation.c: Adjust.
* c-c++-common/attr-nonstring-2.c: Adjust.
* c-c++-common/attr-nonstring-3.c: New test.

From-SVN: r255031

i386-opts.h (enum prefer_vector_width): Added new enum for the new option -mprefer-vector-width=[none|128|256|512].

* config/i386/i386-opts.h (enum prefer_vector_width): Added new enum
for the new option -mprefer-vector-width=[none|128|256|512].
* config/i386/i386.c (ix86_target_string): remove old style options
-mprefer-avx256 and make -mprefer-avx128 as alias.
(ix86_option_override_internal):  Apply defaults for the
-mprefer-vector-width=[128|256] option.
* config/i386/i386.h (TARGET_PREFER_AVX128, TARGET_PREFER_AVX256):
Implement macros to work with -mprefer-vector-width=.
* config/i386/i386.opt: Implemented option
-mprefer-vector-width=[none|128|256|512].
* doc/invoke.texi: Documentation for
-mprefer-vector-width=[none|128|256|512].

gcc/testsuite/

* g++.dg/ext/pr57362.C (__attribute__): Test
prefer-vector-width=[128|256] target attribute.
* gcc.target/i386/avx512f-constant-float-return.c (dg-optioins):
Use -mprefer-vector-width=256 instead of -mprefer-avx256.
* gcc.target/i386/avx512f-prefer.c: Ditto.
* gcc.target/i386/pr82460-2.c: Ditto.

From-SVN: r255030

Add quotes for constexpr keyword.

2017-11-21  Martin Liska  <mliska@suse.cz>

* class.c (finalize_literal_type_property): Add quotes for
constexpr keyword.
(explain_non_literal_class): Likewise.
* constexpr.c (ensure_literal_type_for_constexpr_object): Likewise.
(is_valid_constexpr_fn): Likewise.
(check_constexpr_ctor_body): Likewise.
(register_constexpr_fundef): Likewise.
(explain_invalid_constexpr_fn): Likewise.
(cxx_eval_builtin_function_call): Likewise.
(cxx_eval_call_expression): Likewise.
(cxx_eval_loop_expr): Likewise.
(potential_constant_expression_1): Likewise.
* decl.c (check_previous_goto_1): Likewise.
(check_goto): Likewise.
(grokfndecl): Likewise.
(grokdeclarator): Likewise.
* error.c (maybe_print_constexpr_context): Likewise.
* method.c (process_subob_fn): Likewise.
(defaulted_late_check): Likewise.
* parser.c (cp_parser_compound_statement): Likewise.
2017-11-21  Martin Liska  <mliska@suse.cz>

* g++.dg/cpp0x/constexpr-48089.C: Add quotes for constexpr
keyword; add dg-message for 'in .constexpr. expansion of '.
* g++.dg/cpp0x/constexpr-50060.C: Likewise.
* g++.dg/cpp0x/constexpr-60049.C: Likewise.
* g++.dg/cpp0x/constexpr-70323.C: Likewise.
* g++.dg/cpp0x/constexpr-70323a.C: Likewise.
* g++.dg/cpp0x/constexpr-cast.C: Likewise.
* g++.dg/cpp0x/constexpr-diag3.C: Likewise.
* g++.dg/cpp0x/constexpr-ex1.C: Likewise.
* g++.dg/cpp0x/constexpr-generated1.C: Likewise.
* g++.dg/cpp0x/constexpr-ice16.C: Likewise.
* g++.dg/cpp0x/constexpr-ice5.C: Likewise.
* g++.dg/cpp0x/constexpr-incomplete2.C: Likewise.
* g++.dg/cpp0x/constexpr-neg1.C: Likewise.
* g++.dg/cpp0x/constexpr-recursion.C: Likewise.
* g++.dg/cpp0x/constexpr-shift1.C: Likewise.
* g++.dg/cpp1y/constexpr-70265-1.C: Likewise.
* g++.dg/cpp1y/constexpr-70265-2.C: Likewise.
* g++.dg/cpp1y/constexpr-79655.C: Likewise.
* g++.dg/cpp1y/constexpr-new.C: Likewise.
* g++.dg/cpp1y/constexpr-return2.C: Likewise.
* g++.dg/cpp1y/constexpr-shift1.C: Likewise.
* g++.dg/cpp1y/constexpr-throw.C: Likewise.
* g++.dg/cpp1z/constexpr-lambda6.C: Likewise.
* g++.dg/ext/constexpr-vla1.C: Likewise.
* g++.dg/ext/constexpr-vla2.C: Likewise.
* g++.dg/ext/constexpr-vla3.C: Likewise.
* g++.dg/cpp0x/static_assert10.C: Likewise.
* g++.dg/cpp1y/pr63996.C: Likewise.
* g++.dg/cpp1y/pr68180.C: Likewise.
* g++.dg/cpp1y/pr77830.C: Likewise.
* g++.dg/ubsan/pr63956.C: Likewise.

From-SVN: r255025

ppc-asm.h (f50, vs50): Fix values.

* config/rs6000/ppc-asm.h (f50, vs50): Fix values.

From-SVN: r255024

Fix invalid XML in libstdc++ manual

2017-11-21  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>

* doc/xml/manual/using.xml (manual.intro.using.macros): Move
variablelist element at the end of its list.

From-SVN: r255023

Improve -Wmaybe-uninitialized documentation

* doc/invoke.texi (-Wmaybe-uninitialized): Rephrase for clarity.

From-SVN: r255022

New POINTER_DIFF_EXPR

2017-11-21  Marc Glisse  <marc.glisse@inria.fr>

gcc/c/
* c-fold.c (c_fully_fold_internal): Handle POINTER_DIFF_EXPR.
* c-typeck.c (pointer_diff): Use POINTER_DIFF_EXPR.

gcc/c-family/
* c-pretty-print.c (pp_c_additive_expression,
c_pretty_printer::expression): Handle POINTER_DIFF_EXPR.

gcc/cp/
* constexpr.c (cxx_eval_constant_expression,
potential_constant_expression_1): Handle POINTER_DIFF_EXPR.
* cp-gimplify.c (cp_fold): Likewise.
* error.c (dump_expr): Likewise.
* typeck.c (pointer_diff): Use POINTER_DIFF_EXPR.

gcc/
* doc/generic.texi: Document POINTER_DIFF_EXPR, update
POINTER_PLUS_EXPR.
* cfgexpand.c (expand_debug_expr): Handle POINTER_DIFF_EXPR.
* expr.c (expand_expr_real_2): Likewise.
* fold-const.c (const_binop, fold_addr_of_array_ref_difference,
fold_binary_loc): Likewise.
* match.pd (X-X, P+(Q-P), &D-P, (P+N)-P, P-(P+N), (P+M)-(P+N),
P-Q==0, -(A-B), X-Z<Y-Z, (X-Z)-(Y-Z), Z-X<Z-Y, (Z-X)-(Z-Y),
(A-B)+(C-A)): New transformations for POINTER_DIFF_EXPR, based on
MINUS_EXPR transformations.
* optabs-tree.c (optab_for_tree_code): Handle POINTER_DIFF_EXPR.
* tree-cfg.c (verify_expr, verify_gimple_assign_binary): Likewise.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node, op_code_prio,
op_symbol_code): Likewise.
* tree-vect-stmts.c (vectorizable_operation): Likewise.
* vr-values.c (extract_range_from_binary_expr): Likewise.
* varasm.c (initializer_constant_valid_p_1): Likewise.
* tree.def: New tree code POINTER_DIFF_EXPR.

From-SVN: r255021

* config/i386/i386.md: Missing file from my previous commit.

From-SVN: r255019

re PR c++/83045 (-Wreturn-type regression in C++)

PR c++/83045
* tree-cfg.c (pass_warn_function_return::execute): Formatting fix.
Also warn if seen __builtin_unreachable () call with BUILTINS_LOCATION.
Use LOCATION_LOCUS when comparing against UNKNOWN_LOCATION.

* c-c++-common/pr61405.c (fn0, fn1): Add return stmts.
* c-c++-common/Wlogical-op-2.c (fn): Likewise.
* g++.dg/debug/pr53466.C: Add -Wno-return-type to dg-options.
* g++.dg/opt/combine.C: Likewise.
* g++.dg/ubsan/return-3.C: Likewise.
* g++.dg/pr59445.C: Likewise.
* g++.dg/pr49847.C: Likewise.
* g++.dg/ipa/pr61800.C: Likewise.
* g++.dg/ipa/pr63470.C: Likewise.
* g++.dg/ipa/pr68672-1.C: Likewise.
* g++.dg/pr58438.C: Likewise.
* g++.dg/torture/pr59265.C: Likewise.
* g++.dg/tree-ssa/ssa-dse-2.C: Likewise.
* g++.old-deja/g++.eh/catch13.C: Likewise.
* g++.old-deja/g++.eh/crash1.C: Likewise.
* g++.dg/tm/pr60004.C: Expect -Wreturn-type warning.
* g++.dg/torture/pr55740.C: Likewise.
* g++.dg/torture/pr43257.C: Likewise.
* g++.dg/torture/pr64280.C: Likewise.
* g++.dg/torture/pr54684.C: Likewise.
* g++.dg/torture/pr56694.C: Likewise.
* g++.dg/torture/pr68470.C: Likewise.
* g++.dg/torture/pr60648.C: Likewise.
* g++.dg/torture/pr71281.C: Likewise.
* g++.dg/torture/pr52772.C: Add -Wno-return-type dg-additional-options.
* g++.dg/torture/pr64669.C: Likewise.
* g++.dg/torture/pr58369.C: Likewise.
* g++.dg/torture/pr33627.C: Likewise.
* g++.dg/torture/predcom-1.C: Add
#pragma GCC diagnostic ignored "-Wreturn-type".
* g++.dg/lto/20090221_0.C: Likewise.
* g++.dg/lto/20091026-1_1.C: Likewise.
* g++.dg/lto/pr54625-1_1.C: Likewise.
* g++.dg/warn/pr83045.C: New test.

From-SVN: r255018

i386.md (*bswap<mode>2_movbe): Add integer suffix to movbe mnemonic.

* config/i386/i386.md (*bswap<mode>2_movbe): Add
integer suffix to movbe mnemonic.
(*bswaphi2_movbe): Ditto.
(bswaphi_lowpart): Merge with *bswaphi_lowpart_1.

testsuite/ChangeLog:

* gcc.target/i386/movbe-1.c: Update scan string for movbe
with integer suffix.
* gcc.target/i386/movbe-2.c: Ditto.
* gcc.target/i386/movbe-3.c: Ditto.
* gcc.target/i386/movbe-4.c: Ditto.
* gcc.target/i386/movbe-5.c: Ditto.

From-SVN: r255017

* gcc.target/i386/pr82713.c: Fix dg directive.

From-SVN: r255016

re PR c++/83020 (('17) Class template constructor call skipped with no error when substitution fails in default argument)

2017-11-21  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/83020
* g++.dg/cpp1z/pr83020.C: New.

From-SVN: r255006

Remove not needed xstrdup_for_dump.

2017-11-21  Martin Liska  <mliska@suse.cz>

* tree-inline.c (expand_call_inline):
  Remove not needed xstrdup_for_dump.

From-SVN: r255005

re PR target/82880 (gcc --help=target --help=optimizers hangs on mips)

PR target/82880
* config/mips/frame-header-opt.c (mips_register_frame_header_opt):
Remove static keyword from f variable.

* gcc.dg/opts-8.c: New test.

From-SVN: r255004

* c-common.c (get_nonnull_operand): Use tree_to_uhwi.

From-SVN: r255003

re PR tree-optimization/83086 (valgrind error in gimple-ssa-store-merging.c for recent build)

PR tree-optimization/83086
* gimple-ssa-store-merging.c
(imm_store_chain_info::try_coalesce_bswap): Test this_n.base_addr
rather than n.base_addr.

From-SVN: r255002

Fix UBSAN errors in dse.c (PR rtl-optimization/82044).

2017-11-21  Martin Liska  <mliska@suse.cz>

PR rtl-optimization/82044
PR tree-optimization/82042
* dse.c (check_mem_read_rtx): Check for overflow.

From-SVN: r255001

tree-ssa-threadbackward.c (find_jump_threads_backwards): Fix typo in comment.

* tree-ssa-threadbackward.c (find_jump_threads_backwards): Fix
typo in comment.

From-SVN: r254999

Don't split call from its call arg location.

gcc/
2017-11-21  Claudiu Zissulescu  <claziss@synopsys.com>

* cfgrtl.c (force_nonfallthru_and_redirect): Don't split a call
and its corresponding call arg location note.

testsuite/
2017-11-21  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/loop-5.cpp: New test.

From-SVN: r254998

[ARC] Reimplement exception handling support.

2016-06-09  Claudiu Zissulescu  <claziss@synopsys.com>
    Andrew Burgess  <andrew.burgess@embecosm.com>

* config/arc/arc-protos.h (arc_compute_frame_size): Delete
declaration.
(arc_return_slot_offset): Likewise.
(arc_eh_return_address_location): New declaration.
* config/arc/arc.c (TARGET_BUILTIN_SETJMP_FRAME_VALUE): Define.
(MUST_SAVE_REGISTER): Add exception handler case.
(MUST_SAVE_RETURN_ADDR): Likewise.
(arc_frame_pointer_required): Likewise.
(arc_frame_pointer_needed): New function.
(arc_compute_frame_size): Changed.
(arc_expand_prologue): Likewise.
(arc_expand_epilogue): Likewise.
(arc_initial_elimination_offset): Likewise.
(arc_return_slot_offset): Delete.
(arc_eh_return_address_location): New function.
(arc_builtin_setjmp_frame_value): Likewise.
* config/arc/arc.h (EH_RETURN_DATA_REGNO): Use 2 registers.
(EH_RETURN_STACKADJ_RTX): Define.
(EH_RETURN_HANDLER_RTX): Likewise.
* config/arc/arc.md (eh_return): Delete.

Co-Authored-By: Andrew Burgess <andrew.burgess@embecosm.com>
From-SVN: r254997

print-tree.h (debug_vec_tree): Remove prototype.

* print-tree.h (debug_vec_tree): Remove prototype.
* gdbinit.in (pvt): Remove macro.

From-SVN: r254996

re PR tree-optimization/83047 (glibc/crypt/crypt_util.c gets miscompiled)

PR tree-optimization/83047
* gimple-ssa-store-merging.c
(imm_store_chain_info::output_merged_store): If the loads with the
same vuse are in different basic blocks, for load_gsi pick a load
location that is dominated by the other loads.

* gcc.dg/pr83047.c: New test.

From-SVN: r254992

P0428R2 - familiar template syntax for generic lambdas

P0428R2 - familiar template syntax for generic lambdas
* parser.c (cp_parser_lambda_declarator_opt): Don't pedwarn
for cxx2a and above, reword pedwarn for C++14/C++17.

* g++.dg/cpp1y/lambda-generic-x.C: Adjust warnings and limit
to c++17_down target.
* g++.dg/cpp1y/lambda-generic-dep.C: Likewise.
* g++.dg/cpp1y/lambda-generic-77914.C: Adjust error and limit
to c++17_down target.
* g++.dg/cpp2a/lambda-generic1.C: New test.
* g++.dg/cpp2a/lambda-generic2.C: New test.
* g++.dg/cpp2a/lambda-generic3.C: New test.
* g++.dg/cpp2a/lambda-generic4.C: New test.
* g++.dg/cpp2a/lambda-generic5.C: New test.

From-SVN: r254991

re PR c++/83059 (ICE on invalid C++ code: in tree_to_uhwi, at tree.c:6633)

PR c++/83059
* c-common.c (get_atomic_generic_size): Use TREE_INT_CST_LOW
instead of tree_to_uhwi, formatting fix.
* config/i386/i386.c (ix86_memmodel_check): Start
-Winvalid-memory-model diagnostics with lowercase letter.

* c-c++-common/pr83059.c: New test.

From-SVN: r254990

re PR debug/82718 (Bad DWARF5 .debug_loclists generation)

PR debug/82718
* dwarf2out.c (dw_loc_list): If crtl->has_bb_partition, temporarily
set in_cold_section_p to the partition containing loc_list->first.
When seeing loc_list->last_before_switch node, update secname and
perform range_across_switch second partition handling only after that.

* gcc.dg/debug/dwarf2/pr82718-1.c: New test.
* gcc.dg/debug/dwarf2/pr82718-2.c: New test.

From-SVN: r254989

re PR debug/82933 (valgrind error in set_cur_line_info_table with -g)

PR debug/82933
* run-rtl-passes.c: Include debug.h.
(run_rtl_passes): Call debug_hooks->assembly_start.
* dwarf2out.c (dwarf2out_assembly_start): Return early if invoked
multiple times.

* gcc.dg/rtl/x86_64/pr82933.c: New test.

From-SVN: r254987

re PR target/82981 (unnecessary __multi3 call for mips64r6 linux kernel)

PR target/82981
* internal-fn.c (expand_mul_overflow): Use OPTAB_WIDEN instead of
OPTAB_DIRECT in calls to expand_simple_binop.

From-SVN: r254986

RTEMS: Enable some libstdc++ features

libstdc++/

* acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Add rtems*.
(GLIBCXX_ENABLE_FILESYSTEM_TS): Likewise.
* configure: Regenerate.

From-SVN: r254985

libgo: fix makefile buglet

    Fix a small bug in the libgo Makefile recipe that constructs the
    directory from which to pick up libgcc_s.so ; the gccgo invocation
    with -print-libgcc-file-name was missing the flags, which meant that
    for -m32 builds we'd see the 64-bit libgcc dir.

    Reviewed-on: https://go-review.googlesource.com/78836

From-SVN: r254984

compiler: report error for ++/-- applied to a non-numeric type

    This avoids a compiler crash.

    Fixes GCC PR 83071.

    Reviewed-on: https://go-review.googlesource.com/78875

From-SVN: r254983

re PR libfortran/78549 (Very slow formatted internal file output)

2017-11-20  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR libgfortran/78549
* io/io.h (newunit_free): Add declaration. Clean some whitespace.
* io/transfer.c (st_read_done, st_write_done): Call newunit_free.
* io/unit.c (newunit_free): Change type from static void to void.

From-SVN: r254982

Use -Wtraditional for "would be stringified in traditional C" (PR preprocessor/81794)

libcpp/ChangeLog:

2017-03-24  Eric Gallager  <egall@gwmail.gwu.edu>

PR preprocessor/81794
* macro.c (check_trad_stringification): Have warning be controlled
by -Wtraditional.

gcc/testsuite/ChangeLog:

2017-09-17  Eric Gallager  <egall@gwmail.gwu.edu>

PR preprocessor/81794
* gcc.dg/pragma-diag-7.c: Update to include check for
stringification.

From-SVN: r254981

C/C++: more stdlib header hints (PR c/81404)

This patch extends the C frontend's "knowledge" of the C stdlib within
get_c_name_hint to cover some more macros and functions, covering
a case reported in PR c/81404 ("INT_MAX"), so that rather than printing:

  t.c:5:12: error: 'INT_MAX' undeclared here (not in a function); did you mean '__INT_MAX__'?
   int test = INT_MAX;
              ^~~~~~~
              __INT_MAX__

we instead print:

  t.c:5:12: error: 'INT_MAX' undeclared here (not in a function)
   int test = INT_MAX;
              ^~~~~~~
  t.c:5:12: note: 'INT_MAX' is defined in header '<limits.h>'; did you forget to '#include <limits.h>'?
  t.c:1:1:
  +#include <limits.h>

  t.c:5:12:
    int test = INT_MAX;
               ^~~~~~~

It also adds generalizes some of the code for this (and for the "std::"
namespace hints in the C++ frontend), moving it to a new
c-family/known-headers.cc and .h, and introducing a class known_headers.
This currently just works by scanning a hardcoded array of known
name/header associations, but perhaps in the future could be turned
into some kind of symbol database so that the compiler could record API
uses and use that to offer suggestions e.g.

foo.cc: error: 'myapi::foo' was not declared in this scope
foo.cc: note: 'myapi::foo" was declared in header 'myapi/private.h'
(included via 'myapi/public.h') when compiling 'bar.cc'; did you forget to
'#include "myapi/public.h"'?

or somesuch.

In any case, moving this to a class gives an easier way to locate the
hardcoded knowledge about the stdlib.

The patch also adds similar code to the C++ frontend covering
unqualified names in the standard library, so that rather than just
e.g.:

  t.cc:19:13: error: 'NULL' was not declared in this scope
   void *ptr = NULL;
               ^~~~

we can emit:

  t.cc:19:13: error: 'NULL' was not declared in this scope
   void *ptr = NULL;
               ^~~~
  t.cc:19:13: note: 'NULL' is defined in header '<cstddef>'; did you forget
  to '#include <cstddef>'?
  t.cc:1:1:
  +#include <cstddef>

  t.cc:19:13:
   void *ptr = NULL;
               ^~~~

(Also XFAIL for PR c++/80567 added for the C++ testcase; this is a
separate pre-existing bug exposed by the testcase for PR 81404).

gcc/ChangeLog:
PR c/81404
* Makefile.in (C_COMMON_OBJS): Add c-family/known-headers.o.

gcc/c-family/ChangeLog:
PR c/81404
* known-headers.cc: New file, based on material from c/c-decl.c.
(suggest_missing_header): Copied as-is.
(get_stdlib_header_for_name): New, based on get_c_name_hint but
heavily edited to add C++ support.  Add some knowledge about
<limits.h>, <stdint.h>, and <wchar.h>.
* known-headers.h: Likewise.

gcc/c/ChangeLog:
PR c/81404
* c-decl.c: Include "c-family/known-headers.h".
(get_c_name_hint): Rename to get_stdlib_header_for_name and move
to known-headers.cc.
(class suggest_missing_header): Move to known-header.h.
(lookup_name_fuzzy): Call get_c_stdlib_header_for_name rather
than get_c_name_hint.

gcc/cp/ChangeLog:
PR c/81404
* name-lookup.c: Include "c-family/known-headers.h"
(lookup_name_fuzzy): Call get_cp_stdlib_header_for_name and
potentially return a new suggest_missing_header hint.

gcc/testsuite/ChangeLog:
PR c/81404
* g++.dg/spellcheck-stdlib.C: New.
* gcc.dg/spellcheck-stdlib.c (test_INT_MAX): New.

From-SVN: r254980

C: hints for missing stdlib includes for macros and types

The C frontend already "knows" about many common functions in
the C standard library:

  test.c: In function 'test':
  test.c:3:3: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
     printf ("hello world\n");
     ^~~~~~
  test.c:3:3: warning: incompatible implicit declaration of built-in function 'printf'
  test.c:3:3: note: include '<stdio.h>' or provide a declaration of 'printf'

and which header file they are in.

However it doesn't know about various types and macros:

test.c:1:13: error: 'NULL' undeclared here (not in a function)
 void *ptr = NULL;
             ^~~~

This patch uses the name_hint/deferred_diagnostic machinery to
add hints for missing C standard library headers for some of the
most common type and macro names.

For example, the above becomes:
test.c:1:13: error: 'NULL' undeclared here (not in a function)
 void *ptr = NULL;
             ^~~~
test.c:1:13: note: 'NULL' is defined in header '<stddef.h>'; did you forget to '#include <stddef.h>'?

gcc/c/ChangeLog:
* c-decl.c (get_c_name_hint): New function.
(class suggest_missing_header): New class.
(lookup_name_fuzzy): Call get_c_name_hint and use it to
suggest missing headers to the user.

gcc/testsuite/ChangeLog:
* gcc.dg/spellcheck-stdlib.c: New test case.

From-SVN: r254979

C++: provide macro used-before-defined hint (PR c++/72786)

This patch uses the name_hint/deferred_diagnostic to provide
a message in the C++ frontend if a macro is used before it is defined
e.g.:

test.c:6:24: error: expected ';' at end of member declaration
   virtual void clone() const OVERRIDE { }
                        ^~~~~
                             ;
test.c:6:30: error: 'OVERRIDE' does not name a type
   virtual void clone() const OVERRIDE { }
                              ^~~~~~~~
test.c:6:30: note: the macro 'OVERRIDE' had not yet been defined
test.c:15:0: note: it was later defined here
 #define OVERRIDE override

It's possible to do it from the C++ frontend as tokenization happens
up-front (and hence the macro already exists when the above is parsed);
I attempted to do it from the C frontend, but because the C frontend only
tokenizes on-demand during parsing, the macro isn't known about until
later.

gcc/cp/ChangeLog:
PR c++/72786
* name-lookup.c (class macro_use_before_def): New class.
(lookup_name_fuzzy): Detect macro that were used before being
defined, and report them as such.

gcc/ChangeLog:
PR c++/72786
* spellcheck.h (best_match::blithely_get_best_candidate): New
accessor.

gcc/testsuite/ChangeLog:
PR c++/72786
* g++.dg/spellcheck-macro-ordering-2.C: New test case.
* g++.dg/spellcheck-macro-ordering.C: Add dg-message directives
for macro used-before-defined.

libcpp/ChangeLog:
PR c++/72786
* include/cpplib.h (cpp_macro_definition_location): New decl.
* macro.c (cpp_macro_definition): New function.

From-SVN: r254978

re PR target/81356 (__builtin_strcpy is not good for copying an empty string on aarch64)

2017-11-20  Steve Ellcey  <sellcey@cavium.com>

PR target/81356
* gfortran.dg/pr45636.f90 (aarch64*-*-*): Remove from xfail list.

From-SVN: r254977

Daily bump.

From-SVN: r254976

Avoid duplicate visibility warning.

* decl2.c (constrain_class_visibility): Don't warn about artificial
fields.

From-SVN: r254973