avoid alignment of static variables affecting stack's

Function (or more narrow) scope static variables (as well as others not
placed on the stack) should also not have any effect on the stack
alignment. I noticed the issue first with Linux'es dynamic_pr_debug()
construct using an 8-byte aligned sub-file-scope local variable.

According to my checking bad behavior started with 4.6.x (4.5.3 was
still okay), but generated code got quite a bit worse as of 4.9.0.

gcc/
2015-12-11  Jan Beulich  <jbeulich@suse.com>

* cfgexpand.c (expand_one_var): Exit early for static and
external variables when adjusting stack alignment related.

gcc/testsuite/
2015-12-11  Jan Beulich  <jbeulich@suse.com>

* gcc.c-torture/execute/stkalign.c: New.

From-SVN: r231569

* ChangeLog: Remove confusign PR marker.

From-SVN: r231567

S/390: Wide int support.

gcc/ChangeLog

* config/s390/s390.c (s390_rtx_costs)
(s390_cannot_force_const_mem, legitimate_pic_operand_p)
(s390_preferred_reload_class, s390_reload_symref_address)
(legitimate_reload_constant_p, print_operand): Wide int support.
* config/s390/predicates.md ("const0_operand", "constm1_operand")
("consttable_operand"): Likewise.
("larl_operand"): Add a comment.
* config/s390/s390.h (TARGET_SUPPORTS_WIDE_INT): Enable wide int
support.

From-SVN: r231566

Makefile.am (libmpx_la_LDFLAGS): Add -version-info option.

libmpx/

2015-12-11  Tsvetkova Alexandra  <aleksandra.tsvetkova@intel.com>

* mpxrt/Makefile.am (libmpx_la_LDFLAGS): Add -version-info
option.
* libmpxwrap/Makefile.am (libmpx_la_LDFLAGS): Likewise and
fix include path.
* libmpx/Makefile.in: Regenerate.
* mpxrt/Makefile.in: Regenerate.
* libmpxwrap/Makefile.in: Regenerate.
* mpxrt/libtool-version: New version.
* libmpxwrap/libtool-version: Likewise.
* mpxrt/libmpx.map: Add new version and a new symbol.
* mpxrt/mpxrt.h: New file.
* mpxrt/mpxrt.c (NUM_L1_BITS): Moved to mpxrt.h.
(REG_IP_IDX): Moved to mpxrt.h.
(REX_PREFIX): Moved to mpxrt.h.
(XSAVE_OFFSET_IN_FPMEM): Moved to mpxrt.h.
(MPX_L1_SIZE): Moved to mpxrt.h.
* libmpxwrap/mpx_wrappers.c (mpx_pointer): New type.
(mpx_bt_entry): New type.
(alloc_bt): New function.
(get_bt): New function.
(copy_if_possible): New function.
(copy_if_possible_from_end): New function.
(move_bounds): New function.
(__mpx_wrapper_memmove): Use move_bounds to copy bounds.

gcc/testsuite/

2015-12-11  Tsvetkova Alexandra  <aleksandra.tsvetkova@intel.com>

* gcc.target/i386/mpx/memmove-1.c: New test.
* gcc.target/i386/mpx/memmove-2.c: New test.

From-SVN: r231565

nvptx.h (TARGET_SUPPORTS_WIDE_INT): Define.

gcc/
* config/nvptx/nvptx.h (TARGET_SUPPORTS_WIDE_INT): Define.
* config/nvptx/nvptx.c (nvptxx_assemble_integer): Return false for
unrecognizable RTX.

gcc/testsuite/
* gcc.target/nvptx/ary-init.c: Repair dg_final syntax.
* gcc.target/nvptx/decl-init.c: Likewise.  Add TI case.

From-SVN: r231564

re PR libstdc++/68139 (rethrow_if_nested should tolerate overloaded unary operator&)

PR libstdc++/68139

From-SVN: r231562

Remove unpaired TERMINATE_PASS_LIST in passes.def

2015-12-11  Tom de Vries  <tom@codesourcery.com>

* passes.def: Remove unpaired TERMINATE_PASS_LIST.

From-SVN: r231561

hash-map.h (hash_map::hash_map): Gather statistics only when GATHER_STATISTICS is true.

* hash-map.h (hash_map::hash_map): Gather statistics only
when GATHER_STATISTICS is true.
* hash-set.h (hash_set::hash_set): Ditto.
* hash-table.h (hash_table::hash_table): Ditto.
(hash_table::create_ggc): Ditto.

From-SVN: r231560

Add an asssert and testcase for PR 68064

2015-12-11  Martin Jambor  <mjambor@suse.cz>

PR ipa/68064
* ipa-prop.c (ipa_compute_jump_functions_for_edge): Add checking
assert that align is nonzero.

testsuite/
* g++.dg/torture/pr68064.C: New test.

From-SVN: r231559

S/390: Fix warnings in "*setmem_long..." patterns.

gcc/ChangeLog

* config/s390/s390.c (s390_expand_setmem): Use new expanders.
* config/s390/s390.md ("*setmem_long")
("*setmem_long_and", "*setmem_long_31z"): Fix warnings.
("*setmem_long_and_31z"): New define_insn.
("setmem_long_<P:mode>"): New expanders.
* (<modesize>): New mode attribute

gcc/testsuite/ChangeLog

* gcc.target/s390/md/setmem_long-1.c: New test.

From-SVN: r231558

S/390: Fix warnings in "*setmem_long..." patterns.

gcc/ChangeLog

* config/s390/s390.md ("movstr", "*movstr"): Fix warning.
("movstr<P:mode>"): New indirect expanders used by "movstr".

gcc/testsuite/ChangeLog

* gcc.target/s390/md/movstr-1.c: New test.
* gcc.target/s390/s390.exp: Add subdir md.
Do not run hotpatch tests twice.

From-SVN: r231557

re PR target/67484 (options-save.c sanitizer asan detects freed storage referenced  heap-use-after-free)

Fix PR target/67484

    Uros Bizjak  <ubizjak@gmail.com>

PR target/67484
* config/i386/i386.c (ix86_valid_target_attribute_tree):
Use ggc_strdup to copy option_strings to opts->x_ix86_arch_string and
opts->x_ix86_tune_string.

From-SVN: r231556

lto-streamer.h (lto_simple_header_with_strings): Remove main_size field already in lto_simple_header.

2015-12-11  Richard Biener  <rguenther@suse.de>

* lto-streamer.h (lto_simple_header_with_strings): Remove
main_size field already in lto_simple_header.

From-SVN: r231555

tree-vect-stmts.c (vectorizable_mask_load_store): Check mask vectype.

gcc/

* tree-vect-stmts.c (vectorizable_mask_load_store): Check
mask vectype.

From-SVN: r231554

i386.c (ix86_get_mask_mode): Use scalar modes for 32 and 16 byte boolean vectors when possible.

gcc/

* config/i386/i386.c (ix86_get_mask_mode): Use scalar
modes for 32 and 16 byte boolean vectors when possible.

gcc/testsuite/

* gcc.dg/vect/vect-32-chars.c: New test.

From-SVN: r231553

Fix shrink-wrapping bug (PR67778, PR68634)

After shrink-wrapping has found the "tightest fit" for where to place
the prologue, it tries move it earlier (so that frame saves are run
earlier) -- but without copying any more basic blocks.

Unfortunately a candidate block we select can be inside a loop, and we
will still allow it (because the loop always exits via our previously
chosen block).  We can do that just fine if we make a duplicate of the
block, but we do not want to here.

So we need to detect this situation.  We can place the prologue at a
previous block PRE only if PRE dominates every block reachable from
it, because then we will never need to duplicate that block (it will
always be executed with prologue).

2015-12-11  Segher Boessenkool  <segher@kernel.crashing.org>

PR rtl-optimization/67778
PR rtl-optimization/68634
* shrink-wrap.c (try_shrink_wrapping): Add a comment about why we want
to put the prologue earlier.  When determining if an earlier block is
suitable, make sure it dominates every block reachable from it.

From-SVN: r231552

Daily bump.

From-SVN: r231551

re PR lto/61886 (LTO breaks fread with _FORTIFY_SOURCE=2)

PR ipa/61886
* lto-symtab.c (lto_symtab_merge_p): Avoid merging across different
values of error and warning attributes.
* gcc.dg/lto/pr61886_0.c: New testcase

From-SVN: r231548

rtlanal: Fix bits/bytes confusion in set_noop_p (PR68814)

The meaning of ZERO_EXTRACT depends on BITS_BIG_ENDIAN, not on
BYTES_BIG_ENDIAN.  This caused PR68814.

2015-12-11  Segher Boessenkool  <segher@kernel.crashing.org>

PR rtl-optimization/68814
* rtlanal.c (set_noop_p): Use BITS_BIG_ENDIAN instead of
BYTES_BIG_ENDIAN.

From-SVN: r231547

nvptx.c (nvptx_function_arg, [...]): Move earlier.

* config/nvptx/nvptx.c (nvptx_function_arg,
nvptx_function_incoming_arg, nvptx_function_arg_advance,
nvptx_strict_argument_naming, nvptx_function_arg_boundary,
nvptx_libcall_value, nvptx_function_value,
nvptx_function_value_regno_p, nvptx_pass_by_reference,
nvptx_return_in_memory, nvptx_promote_function_mode,
nvptx_static_chain): Move earlier.
(write_one_arg): Break out as helper fn for ...
(write_arg): ... this new function.  Adjust all callers.

From-SVN: r231543

* lto-streamer-out.c (wrap_refs): Only wrap public decls.

From-SVN: r231541

ipa-cp.c (ipcp_cloning_candidate_p): Use node->optimize_for_size_p.

* ipa-cp.c (ipcp_cloning_candidate_p): Use node->optimize_for_size_p.
(good_cloning_opportunity_p): Likewise.
(gather_context_independent_values): Do not return true when
polymorphic call context is known or when we have known aggregate
value of unused parameter.
(estimate_local_effects): Try to create clone for all context
when either some params are substituted or devirtualization is possible
or some params can be removed; use local flag instead of
node->will_be_removed_from_program_if_no_direct_calls_p.
(identify_dead_nodes): Likewise.

* gcc.c-torture/execute/20010122-1.c: Disable cloning.

From-SVN: r231540

Add -Wmisleading-indentation to -Wall

gcc/c-family/ChangeLog:
* c.opt (Wmisleading-indentation): Add to -Wall for C and C++.

gcc/ChangeLog:
* doc/invoke.texi (-Wall): Add -Wmisleading-indentation to the
list.
(-Wmisleading-indentation): Update documentation to reflect
being enabled by -Wall in C/C++.

From-SVN: r231539

re PR rtl-optimization/68691 (ICE at -O3 with -g enabled on x86_64-linux-gnu in alter_subregs, at lra-spills.c:610 (in 32-bit mode))

2015-12-10  Vladimir Makarov  <vmakarov@redhat.com>

PR rtl-optimization/68691
* lra-spills.c (lra_final_code_change): Check pseudo occurrence
number in non-debug insns and remove debug insns if necessary.

2015-12-10  Vladimir Makarov  <vmakarov@redhat.com>

PR rtl-optimization/68691
* gcc.target/i386/pr68691.c: New.

From-SVN: r231538

invoke.texi (Warning Options): Update -Wall options.

        * invoke.texi (Warning Options): Update -Wall options.  Clarify
        when some -Wextra options are enabled.  Add -Wplacement-new example.

From-SVN: r231533

re PR tree-optimization/68619 (error: loop with header 6 not in loop tree)

PR tree-optimization/68619
* graphite-scop-detection.c (gather_bbs::before_dom_children):
Change return type to an edge.  Always return NULL.

From-SVN: r231532

testsuite/lib/multline.exp: show test name and line numbers

gcc/testsuite/ChangeLog:
* lib/multiline.exp (_multiline_expected_outputs): Update comment.
(dg-end-multiline-output): Capture line numbers within
_multiline_expected_outputs.
(handle-multiline-outputs): Access global $testname_with_flags
and add it as a prefix to pass/fail results.  Extract line numbers
from $_multiline_expected_outputs and print them within pass/fail
results, replacing the printing of $index.  Consolidate the
string prefix shared between pass/fail into a new local ($title).

From-SVN: r231530

re PR tree-optimization/68619 (error: loop with header 6 not in loop tree)

2015-12-10  Jeff Law  <law@redhat.com>

PR tree-optimization/68619
* tree-ssa-dom.c (dom_opt_dom_walker::before_dom_children): Propgate
return value from optimize_stmt.
(dom_opt_dom_walker): Add new argument to dom_walker constructor.
(pass_dominator:execute): If a block has an unreachable edge,
remove all jump threads through any successor of the affected block.
(record_equivalences_from_phis): Ignore alternative if the edge
does not have EDGE_EXECUTABLE set.
(single_incoming_edge_ignoring_loop_edges): Similarly.
(optimize_stmt): If a gimple_code has a compile-time constant
condition, return the edge taken for that constant value.  Also
change the condition to true/false as necessary.
* domwalk.h (dom_walker::dom_walker): Add new argument
skip_unreachable_blocks.  Don't provide empty constructor body.
(dom_walker::before_dom_children): Change return type.
(dom_walker::bb_reachable): Declare new private method.
(dom_walker::propagate_unreachable_to_edges): Likewise.
(dom_walker::m_unreachable_dom): Declare new private data member.
(dom_walker::m_skip_unreachable_blocks): Likewise.
* domwalk.c: Include dumpfile.h.
(dom_walker::dom_walker): New constructor.  Initialize private data
members.  If needed, set EDGE_EXECUTABLE for all edges in the CFG,
extracted from tree-ssa-sccvn.c.
(dom_walker::bb_reachable): New method extracted from tree-ssa-sccvn.c
(dom_walker::propagate_unreachable_to_edges): Likewise.
(dom_walker::walk): Only call before_dom_children on reachable
blocks.  If before_dom_children returns an edge, then clear
EDGE_EXECUTABLE for all other outgoing edges from the same block.
For unreachable blocks, call propagate_unreachable_to_edges.
Similarly, only call after_dom_children on reachable blocks.  For
unreachable blocks, conditionally clear m_unreachable_dom.
* tree-ssa-sccvn.c (sccvn_dom_walker::unreachable_dom): Remove
private data member.
(sccvn_dom_walker::after_dom_children): Use methods from dom_walker
class.
(run_scc_vn): Likewise.
(sccvn_dom_walker::before_dom_children): Likewise.  Return the taken
outgoing edge if a COND, SWITCH, or GOTO are optimized.
* compare-elim.c (find_comparison_dom_walker::before_dom_children):
Change return type to an edge.  Always return NULL.
* fwprop.c (single_def_use_dom_walker::before_dom_children): Likewise.
* gimple-ssa-strength-reduction.c
(find_candidates_dom_walker::before_dom_children): Likewise.
* ipa-prop.c (analysis_dom_walker::before_dom_children): Likewise.
(ipcp_modif_dom_walker::before_dom_children): Likewise.
* tree-into-ssa.c (rewrite_dom_walker::before_dom_children): Likewise.
(rewrite_update_dom_walker::before_dom_children): Likewise.
(mark_def_dom_children::before_dom_children): Likewise.
* tree-ssa-dse.c (dse_dom_walker::before_dom_children): Likewise.
* tree-ssa-loop-im.c
(invariantness_dom_walker::before_dom_children): Likewise.
(move_computations_dom_walker::before_dom_walker): Likewise.
* tree-ssa-phiopt.c
(nontrapping_dom_walker::before_dom_children): Likewise.
* tree-ssa-pre.c
(eliminate_dom_walker::before_dom_children): Likewise.
* tree-ssa-propagate.c
(substitute_and_fold_dom_walker::before_dom_children): Likewise.
* tree-ssa-strlen.c
(strlen_dom_walker::before_dom_children): Likewise.
* tree-ssa-uncprop.c
(uncprop_dom_walker::before_dom_children): Likewise.

PR tree-optimization/68619
* gcc.dg/tree-ssa/pr68619-1.c: New test.
* gcc.dg/tree-ssa/pr68619-2.c: New test.
* gcc.dg/tree-ssa/pr68619-3.c: New test.
* gcc.dg/tree-ssa/pr68619-4.c: New test.
* gcc.dg/tree-ssa/pr68619-5.c: New test.

From-SVN: r231527

re PR rtl-optimization/68376 (wrong code at -O1 and above on x86_64-linux-gnu)

PR rtl-optimization/68376
PR rtl-optimization/68670
* ifcvt.c (noce_try_abs): For one_cmpl allow < 0, >= 0
or > -1 conditions regardless of negate, and disallow
all other conditions.

* gcc.c-torture/execute/pr68376-2.c (f5, f6, f7, f8): New
tests.
(main): Call them.
* gcc.dg/pr68670-1.c: New test.
* gcc.dg/pr68670-2.c: New test.

From-SVN: r231526

tree-chkp.c (chkp_call_returns_bounds_p): Return true for VA_ARG call.

gcc/

* tree-chkp.c (chkp_call_returns_bounds_p): Return true
for VA_ARG call.
(chkp_fixup_inlined_call): New.
* tree-chkp.h (chkp_fixup_inlined_call): New.
* tree-stdarg.c: Include tree-chkp.h.
(expand_ifn_va_arg_1): Fixup bndret calls for removed
VA_ARG calls.

From-SVN: r231525

re PR c++/68348 (ICE: segfault in cxx_eval_constant_expression at cp/constexpr.c:3172)

PR c++/68348
* g++.dg/cpp0x/pr68348.C: New test.

From-SVN: r231524

tree-inline.c (duplicate_remap_omp_clause_seq): New function.

2015-12-10  Martin Jambor  <mjambor@suse.cz>

* tree-inline.c (duplicate_remap_omp_clause_seq): New function.
(replace_locals_op): Duplicate gimple sequences in OMP clauses.

From-SVN: r231523

Fix -Wmisleading-indentation warning in graphite-optimize-isl.c

../../../src/gcc/graphite-optimize-isl.c: In function ‘isl_union_set* scop_get_domains(scop_p)’:
../../../src/gcc/graphite-optimize-isl.c:362:5: error: statement is indented as if it were guarded by... [-Werror=misleading-indentation]
     return res;
     ^~~~~~

In file included from ../../../src/gcc/hash-table.h:236:0,
                 from ../../../src/gcc/coretypes.h:348,
                 from ../../../src/gcc/graphite-optimize-isl.c:28:
../../../src/gcc/vec.h:1343:3: note: ...this ‘for’ clause, but it is not
   for (I = 0; (V).iterate ((I), &(P)); ++(I))
   ^

../../../src/gcc/graphite-optimize-isl.c:359:3: note: in expansion of macro ‘FOR_EACH_VEC_ELT’
   FOR_EACH_VEC_ELT (scop->pbbs, i, pbb)
   ^~~~~~~~~~~~~~~~

   351  static isl_union_set *
   352  scop_get_domains (scop_p scop ATTRIBUTE_UNUSED)
   353  {
   354    int i;
   355    poly_bb_p pbb;
   356    isl_space *space = isl_set_get_space (scop->param_context);
   357    isl_union_set *res = isl_union_set_empty (space);
   358
   359    FOR_EACH_VEC_ELT (scop->pbbs, i, pbb)
   360      res = isl_union_set_add_set (res, isl_set_copy (pbb->domain));
   361
   362      return res;
            ^ warning is here
   363  }

gcc/ChangeLog:
* graphite-optimize-isl.c (scop_get_domains): Fix indentation.

From-SVN: r231522

Fix -Wmisleading-indentation warning in ifcvt.c

../../../src/gcc/ifcvt.c: In function ‘bool noce_try_inverse_constants(noce_if_info*)’:
../../../src/gcc/ifcvt.c:1233:2: error: statement is indented as if it were guarded by... [-Werror=misleading-indentation]
  seq = end_ifcvt_sequence (if_info);
  ^~~

../../../src/gcc/ifcvt.c:1230:7: note: ...this ‘if’ clause, but it is not
       if (target != if_info->x)
       ^~

due to the lack of an outdent after the conditional at lines 1230-1:

  1220    if (target)
  1221      {
  1222        rtx_insn *seq = get_insns ();
  1223
  1224        if (!seq)
  1225          {
  1226            end_sequence ();
  1227            return false;
  1228          }
  1229
>>1230        if (target != if_info->x)
>>1231          noce_emit_move_insn (if_info->x, target);
  1232
>>1233          seq = end_ifcvt_sequence (if_info);
  1234
  1235          if (!seq)
  1236            return false;
  1237
  1238          emit_insn_before_setloc (seq, if_info->jump,
  1239                                   INSN_LOCATION (if_info->insn_a));
  1240          return true;
  1241      }

gcc/ChangeLog:
* ifcvt.c (noce_try_inverse_constants): Fix indentation.

From-SVN: r231521

Fix -Wmisleading-indentation warning in gcc/regrename.c

../../../src/gcc/regrename.c: In function ‘void scan_rtx_address(rtx_insn*, rtx_def**, reg_class, scan_actions, machine_mode, addr_space_t)’:
../../../src/gcc/regrename.c:1314:7: error: statement is indented as if it were guarded by... [-Werror=misleading-indentation]
       break;
       ^
../../../src/gcc/regrename.c:1311:5: note: ...this ‘if’ clause, but it is not
     if (!AUTO_INC_DEC)
     ^

gcc/ChangeLog:
* regrename.c (scan_rtx_address): Fix indentation.

From-SVN: r231520

Fix misleading indentation in gcc/fortran/io.c

Fix this warning:
../../../src/gcc/fortran/io.c: In function ‘match gfc_match_open()’:
../../../src/gcc/fortran/io.c:2003:4: error: statement is indented as if it were guarded by... [-Werror=misleading-indentation]
    if (!compare_to_allowed_values ("DELIM", delim, NULL, NULL,
    ^
../../../src/gcc/fortran/io.c:2000:2: note: ...this ‘if’ clause, but it is not
  if (!is_char_type ("DELIM", open->delim))
  ^

gcc/fortran/ChangeLog:
* io.c (gfc_match_open): Fix indentation.

From-SVN: r231519

Fix -Wmisleading-indentation warning in function.c

Fix this warning:
../../../src/gcc/function.c: In function ‘void locate_and_pad_parm(machine_mode, tree, int, int, int, tree, args_size*, locate_and_pad_arg_data*)’:
../../../src/gcc/function.c:4123:2: error: statement is indented as if it were guarded by... [-Werror=misleading-indentation]
  {
  ^
../../../src/gcc/function.c:4119:7: note: ...this ‘if’ clause, but it is not
       if (initial_offset_ptr->var)
       ^

gcc/ChangeLog:
* function.c (locate_and_pad_parm): Fix indentation.

From-SVN: r231518

Change tests to use -std=gnu++14 not -std=gnu++1y

* testsuite/experimental/memory/shared_ptr/assign/assign.cc: Replace
-std=gnu++1y with -std=gnu++14.
* testsuite/experimental/memory/shared_ptr/cast/cast.cc: Likewise.
* testsuite/experimental/memory/shared_ptr/comparison/comparison.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/alias_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/alloc_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/copy_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/copy_ctor_neg.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/default_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/move_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/pointer_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/unique_ptr_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/cons/weak_ptr_ctor.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/dest/dest.cc: Likewise.
* testsuite/experimental/memory/shared_ptr/modifiers/reset.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/modifiers/swap.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/observers/bool_conv.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/observers/operators.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/observers/owner_before.cc:
Likewise.
* testsuite/experimental/memory/shared_ptr/observers/use_count.cc:
Likewise.

From-SVN: r231517

Fix dejagnu directives in shared_ptr test

PR libstdc++/68825
* include/experimental/bits/shared_ptr.h (__shared_ptr, __weak_ptr,
experimental::shared_ptr, experimental::weak_ptr): Constrain
assignment operators.
* testsuite/experimental/memory/shared_ptr/cons/copy_ctor_neg.cc:
Change to a compile-only test and change dg-excess-errors to dg-error.

From-SVN: r231516

re PR ada/48013 (generic instantiation breaks the No_Elaboration_Code restriction)

PR ada/48013
* gcc-interface/trans.c (empty_stmt_list_p): New predicate.
(gigi): Invoke it to compute the No_Elaboration_Code property.
(insert_code_for): Do not insert the code if it's empty.

From-SVN: r231515

tree-ssa-structalias.c (struct variable_info): Add is_ipa_escape_point flag.

2015-12-10  Richard Biener  <rguenther@suse.de>

* tree-ssa-structalias.c (struct variable_info): Add
is_ipa_escape_point flag.
(new_var_info): Initialize to false.
(find_func_aliases): Generate escape constraints for stores
properly in IPA mode.
(ipa_pta_execute): Compute is_ipa_escape_point for globals.

From-SVN: r231514

trans.c (Call_to_gnu): Remove guard for NULL_EXPR.

* gcc-interface/trans.c (Call_to_gnu): Remove guard for NULL_EXPR.
* gcc-interface/utils2.c (gnat_rewrite_reference) <ERROR_MARK>: Return
the reference unmodified.
<NULL_EXPR>: New case.  Likewise.

From-SVN: r231513

Improve generated libstdc++ API docs

* doc/doxygen/user.cfg.in: Use EXTENSION_MAPPING tag. Add new headers
to INPUT. Remove obsolete XML_SCHEMA and XML_DTD tags. Update
PREDEFINED macros. Set BRIEF_MEMBER_DESC for man-pages.
* include/backward/strstream: Correct @file comment.
* include/bits/forward_list.h: Improve Doxygen comments.
* include/bits/locale_facets_nonio.h: Likewise.
* include/bits/mutex.h: Likewise.
* include/bits/shared_ptr.h: Likewise.
* include/bits/stl_deque.h: Likewise.
* include/debug/vector (_Safe_vector): Add @brief section to comment.
* include/experimental/bits/fs_dir.h: Correct @file comment.
* include/experimental/bits/fs_fwd.h: Likewise.
* include/experimental/bits/fs_ops.h: Likewise.
* include/experimental/bits/fs_path.h: Likewise.
* include/experimental/bits/string_view.tcc: Likewise.
* include/experimental/optional: Document experimental status.
* include/experimental/string_view: Correct @file comment.
* include/ext/pb_ds/detail/bin_search_tree_/traits.hpp: Reduce
whitespace to avoid Doxygen bug.
* include/std/bitset: Remove redundant @class Doxygen command. Add
parentheses to avoid Doxygen bug.
* include/std/mutex: Improve Doxygen comments.
* include/tr2/dynamic_bitset: Add missing @param documentation.
* scripts/run_doxygen: Rename man pages for std::experimental types.

From-SVN: r231512

gigi.h (create_var_decl): Adjust comment.

* gcc-interface/gigi.h (create_var_decl): Adjust comment.
(create_subprog_decl): Likewise.
* gcc-interface/utils.c (create_var_decl): Likewise.
(create_subprog_decl): Likewise.

From-SVN: r231511

[ARC] Add support for atomic memory built-in. Add atomic.md file.

gcc/

2015-12-10  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/atomic.md: Add new file.

From-SVN: r231510

[ARC] Add support for atomic memory built-in.

gcc/

2015-12-10  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc-protos.h (arc_expand_atomic_op): Prototype.
(arc_split_compare_and_swap): Likewise.
(arc_expand_compare_and_swap): Likewise.
* config/arc/arc.c (arc_init): Check usage atomic option.
(arc_pre_atomic_barrier): New function.
(arc_post_atomic_barrier): Likewise.
(emit_unlikely_jump): Likewise.
(arc_expand_compare_and_swap_qh): Likewise.
(arc_expand_compare_and_swap): Likewise.
(arc_split_compare_and_swap): Likewise.
(arc_expand_atomic_op): Likewise.
* config/arc/arc.h (TARGET_CPU_CPP_BUILTINS): New C macro.
(ASM_SPEC): Enable mlock option when matomic is used.
* config/arc/arc.md (UNSPEC_ARC_MEMBAR): Define.
(VUNSPEC_ARC_CAS): Likewise.
(VUNSPEC_ARC_LL): Likewise.
(VUNSPEC_ARC_SC): Likewise.
(VUNSPEC_ARC_EX): Likewise.
* config/arc/arc.opt (matomic): New option.
* config/arc/constraints.md (ATO): New constraint.
* config/arc/predicates.md (mem_noofs_operand): New predicate.
* doc/invoke.texi: Document -matomic.
* config/arc/atomic.md: New file.

gcc/testsuite

2015-12-10  Claudiu Zissulescu  <claziss@synopsys.com>

* lib/target-supports.exp (check_effective_target_arc_atomic): New
function.
(check_effective_target_sync_int_long): Add checks for ARC atomic
feature.
(check_effective_target_sync_char_short): Likewise.

From-SVN: r231509

re PR tree-optimization/68817 (internal compiler error: Segmentation fault (program f951))

2015-12-10  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68817
* tree-vect-slp.c (vect_attempt_slp_rearrange_stmts): Detect
gaps early.

* gfortran.dg/pr68817.f90: New testcase.

From-SVN: r231508

Revert [testsuite][ARM target attributes] Fix effective_target tests

From-SVN: r231507

* alias.c (get_alias_set): Add cut-off for recursion.

From-SVN: r231505

fix typo in date format

From-SVN: r231504

tree-vect-stmts.c (vectorizable_assignment): Support useless boolean conversion.

gcc/

* tree-vect-stmts.c (vectorizable_assignment): Support
useless boolean conversion.

From-SVN: r231503

Correct previous ChangeLog (targets is correct, not hosts)

From-SVN: r231501

[install.texi] Add note against GNAT 4.8 on ARM targets

* doc/install/texi: Add note against GNAT 4.8 on ARM hosts.

From-SVN: r231500

re PR middle-end/68785 (valgrind reports issues with folding on x86_64)

PR tree-optimization/68785
* gimple-fold.c (fold_ctor_reference): Pass return value from
native_encode_expr to native_interpret_expr.
* tree-ssa-sccvn.c (fully_constant_vn_reference_p): Likewise.

* gcc.dg/pr68785.c: New test.

From-SVN: r231499

re PR ipa/68331 ([meta-bug] fipa-pta issues)

2015-12-10  Richard Biener  <rguenther@suse.de>

PR ipa/68331
* tree-ssa-structalias.c (set_uids_in_ptset): Add fndecl
parameter and make vars_contains_nonlocal properly have
function-scope semantics in IPA mode.
(find_what_var_points_to): Add fndecl parameter.
(find_what_p_points_to): Likewise.
(pt_solution_includes_global): Remove IPA PTA early out.
(compute_points_to_sets): Adjust.
(ipa_pta_execute): Likewise.  Clear final_solutions after
each function.

* gcc.dg/torture/ipa-pta-3.c: New testcase.
* g++.dg/ipa/ipa-pta-1.C: Likewise.

From-SVN: r231498

Fix warnings from including fdl.texi into gnat-style.texi

2015-12-10  Tom de Vries  <tom@codesourcery.com>

PR ada/65102
* doc/include/fdl.texi: Add nodefaultgnufreedocumentationlicensenode
ifdef to allow disabling default @node GNU Free Documentation License.

* gnat-style.texi: Set nodefaultgnufreedocumentationlicensenode and
define @node GNU Free Documentation License locally.

From-SVN: r231497

tree-ssa-structalias.c (create_function_info_for): Add missing constraint from nonlocal for DECL_RESULT.

2015-12-10  Richard Biener  <rguenther@suse.de>

* tree-ssa-structalias.c (create_function_info_for): Add missing
constraint from nonlocal for DECL_RESULT.

From-SVN: r231496

tree-if-conv.c: Include params.h.

2015-12-10  Richard Biener  <rguenther@suse.de>

* tree-if-conv.c: Include params.h.
(ifcvt_memrefs_wont_trap): Use PARAM_ALLOW_STORE_DATA_RACES
instead of flag_tree_loop_if_convert_stores to guard cases
we'd introduce store-data-races.

From-SVN: r231495

re PR ipa/68721 (wrong code at -Os and above on x86_64-linux-gnu)

2015-12-10  Richard Biener  <rguenther@suse.de>

PR ipa/68721
* ipa-split.c (split_function): Record return value properly
when the split part doesn't set it.

* gcc.dg/torture/pr68721.c: New testcase.

From-SVN: r231494

re PR tree-optimization/68806 (internal compiler error: Segmentation fault)

2015-12-10  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68806
* tree-vect-loop.c (vect_analyze_loop_2): Properly detect
reduction chains and ignore SLP reductions.

* gcc.dg/torture/pr68806.c: New testcase.

From-SVN: r231493

tree-if-conv.c (if_convertible_loop_p_1): Do not compute dependences.

2015-12-10  Richard Biener  <rguenther@suse.de>

* tree-if-conv.c (if_convertible_loop_p_1): Do not compute
dependences.
(if_convertible_loop_p): Adjust.

From-SVN: r231492

Remove invalid assert in find_func_aliases_for_builtin_call

2015-12-10  Tom de Vries  <tom@codesourcery.com>

* tree-ssa-structalias.c (find_func_aliases_for_builtin_call): Remove
invalid assert.

From-SVN: r231491

Fix memory leaks in tree-vect-data-refs.c

* tree-vect-data-refs.c: Free an overwritten dataref.

From-SVN: r231490

fptr.c (__canonicalize_funcptr_for_compare): Remove code to initialize call to __dl_fixup once.

* config/pa/fptr.c (__canonicalize_funcptr_for_compare): Remove code
to initialize call to __dl_fixup once.

From-SVN: r231486

PR 68115/libfortran

PR 68115/libfortran
* configure.ac: Set libbacktrace_cv_sys_sync to no on hppa*-*-hpux*.
* configure: Regenerate.
* elf.c (backtrace_initialize): Cast __sync_bool_compare_and_swap call
to void.

From-SVN: r231485

re PR target/68729 (../Xbae/Methods.c:1772:1: ICE: in extract_insn, at recog.c:2343)

PR target/68729
* config/pa/pa.c (pa_emit_move_sequence): Don't check that mode is
consistent with modes of the input and output operands when doing
reloads to and from floating point registers.  Do reload for all
address forms.

From-SVN: r231482

Daily bump.

From-SVN: r231481

re PR lto/61886 (LTO breaks fread with _FORTIFY_SOURCE=2)

PR ipa/61886
PR middle-end/25140
* tree-ssa-alias.c (ptr_deref_may_alias_decl_p): Use compare_base_decls
(nonoverlapping_component_refs_of_decl_p): Update sanity check.
(decl_refs_may_alias_p): Use compare_base_decls.
* alias.c: Include cgraph.h
(rtx_equal_for_memref_p): Use rtx_equal_for_memref_p.
(compare_base_decls): New function.
(base_alias_check): Likewise.
(memrefs_conflict_p): Likewise.
(nonoverlapping_memrefs_p): Likewise.
* alias.h (compare_base_decls): Declare.

* gcc.c-torture/execute/alias-2.c: New testcase.

From-SVN: r231478

re PR lto/68811 (ICE: in get, at cgraph.h:1218)

PR lto/68811
* lto.c (lto_fixup_prevailing_decls): Do not check TREE_CHAIN of
DECL.
(LTO_NO_PREVAIL): Use gcc_checking_assert.

From-SVN: r231477

trans.c (gfc_allocate_using_lib,gfc_deallocate_with_status): Introducing __asm__ __volatile__ ("":::"memory") after image control statements.

2015-12-09  Tobias Burnus  <burnus@net-b.de>
            Alessandro Fanfarillo <fanfarillo.gcc@gmail.com>

        * trans.c (gfc_allocate_using_lib,gfc_deallocate_with_status):
        Introducing __asm__ __volatile__ ("":::"memory")
        after image control statements.
        * trans-stmt.c  (gfc_trans_sync, gfc_trans_event_post_wait,
        gfc_trans_lock_unlock, gfc_trans_critical): Ditto.
        * trans-intrinsic.c (gfc_conv_intrinsic_caf_get,
        conv_caf_send): Introducing __asm__ __volatile__ ("":::"memory")
        after send, before get and around sendget.

2015-12-09  Tobias Burnus  <burnus@net-b.de>
            Alessandro Fanfarillo <fanfarillo.gcc@gmail.com>

        * gfortran.dg/coarray_40.f90: New.

Co-Authored-By: Alessandro Fanfarillo <fanfarillo.gcc@gmail.com>
From-SVN: r231476

re PR lto/61886 (LTO breaks fread with _FORTIFY_SOURCE=2)

PR ipa/61886
* ipa-visibility.c (function_and_variable_visibility): Fix vtable
rewritting guard.

From-SVN: r231474

re PR lto/68811 (ICE: in get, at cgraph.h:1218)

PR lto/68811
* g++.dg/lto/pr68811_0.C: New testcase.
* g++.dg/lto/pr68811_1.C: New testcase.

* lto-symtab.c (lto_symtab_merge_decls_2): Decl can never be prevailed
by itself.

From-SVN: r231473

re PR fortran/68815 (Error/warning diagnostic: '%s' should be converted to %qs-like or %<%s%>-like string strings)

2015-12-09  Tobias Burnus  <burnus@net-b.de>

        PR fortran/68815
        * decl.c (gfc_verify_c_interop_param, variable_decl): Use
        %< ... %> for quoting in diagnostics.
        * io.c (check_format): Ditto.
        * resolve.c (resolve_operator): Ditto.
        * symbol.c (check_conflict): Ditto.
        * trans-common.c (translate_common): Ditto.

From-SVN: r231472

re PR lto/61886 (LTO breaks fread with _FORTIFY_SOURCE=2)

PR ipa/61886
PR middle-end/25140
* ipa-reference.c (ipa_reference_get_not_read_global,
ipa_reference_get_not_read_global): Fix WRT aliases.
(is_improper): Break out from ...
(is_proper_for_analysis): ... here; fix WRT aliases.
(analyze_function, generate_summary,
ipa_reference_write_optimization_summary,
ipa_reference_read_optimization_summary): Use ipa_reference_var_uid.
* ipa-refrence.h (ipa_reference_var_uid): New inline.
* tree-ssa-alias.c: Revert my accidental previous commit.
(ref_maybe_used_by_call_p_1,
call_may_clobber_ref_p_1): Use ipa_reference_var_uid.

From-SVN: r231471

freebsd64.h: Remove the redefinition of WCHAR_TYPE.

2015-12-09  Andreas Tobler  <andreast@gcc.gnu.org>

    * config/rs6000/freebsd64.h: Remove the redefinition of WCHAR_TYPE.

From-SVN: r231470

specify more isl codegen options

* graphite-optimize-isl.c: Include isl/ast_build.h
(optimize_isl): Set several isl_options_set_* options.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r231467

add array access function in the right order

we used to add the access functions in the wrong order, Fortran style, leading to unprofitable interchanges.

* graphite-sese-to-poly.c (pdr_add_memory_accesses): Iterate in
the same order as adding data reference access functions.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r231465

dump param name when timing out

     * graphite-optimize-isl.c (optimize_isl): Improve dump message.

From-SVN: r231464

re PR c++/60218 ([c++11] ICE using __bases for broken class hierarchy)

/cp
2015-12-09  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/60218
* semantics.c (calculate_bases_helper): Don't call dfs_walk_all
when TYPE_BINFO (type) is null.
(calculate_bases): Handle gracefully a null vector->length ().

/testsuite
2015-12-09  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/60218
* g++.dg/ext/bases2.C: New.

From-SVN: r231460

sse4_1-roundps-1.c: Remove ASM_SUFFIX define.

* gcc.target/i386/sse4_1-roundps-1.c: Remove ASM_SUFFIX define.
* gcc.target/i386/sse4_1-roundps-2.c: Ditto.
* gcc.target/i386/sse4_1-roundps-3.c: Ditto.
* gcc.target/i386/sse4_1-roundsd-1.c: Ditto.
* gcc.target/i386/sse4_1-roundsd-2.c: Ditto.
* gcc.target/i386/sse4_1-roundsd-3.c: Ditto.
* gcc.target/i386/sse4_1-roundss-1.c: Ditto.
* gcc.target/i386/sse4_1-roundss-2.c: Ditto.
* gcc.target/i386/sse4_1-roundss-3.c: Ditto.

From-SVN: r231459

980716-1.c: Avoid undefined behavior due to passing terminating NULL as int rather than pointer.

* gcc.c-torture/execute/980716-1.c: Avoid undefined behavior due to
passing terminating NULL as int rather than pointer.

From-SVN: r231458

re PR tree-optimization/66949 (ICE at -O2 and -O3 on x86_64-linux-gnu in tree_ssa_phiopt_worker, at tree-ssa-phiopt.c:335)

PR tree-optimization/66949
* tree-ssa-phiopt.c (tree_ssa_phiopt_worker): Don't call
single_non_singleton_phi_for_edges to get the PHI from
factor_out_conditional_conversion.  Use NULL_TREE instead of NULL.
(factor_out_conditional_conversion): Adjust declaration.  Make it
return the newly-created PHI.

* gcc.dg/torture/pr66949-1.c: New test.
* gcc.dg/torture/pr66949-2.c: New test.

From-SVN: r231457

[Patch AArch64] Reinstate CANNOT_CHANGE_MODE_CLASS to fix pr67609

gcc/

PR rtl-optimization/67609
* config/aarch64/aarch64-protos.h
(aarch64_cannot_change_mode_class): Bring back.
* config/aarch64/aarch64.c
(aarch64_cannot_change_mode_class): Likewise.
* config/aarch64/aarch64.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
* config/aarch64/aarch64.md (aarch64_movdi_<mode>low): Use
zero_extract rather than truncate.
(aarch64_movdi_<mode>high): Likewise.

gcc/testsuite/

PR rtl-optimization/67609
* gcc.dg/torture/pr67609.c: New.

From-SVN: r231455

re PR tree-optimization/68786 (Aligned masked store is generated for unaligned pointer)

PR tree-optimization/68786
* tree-if-conv.c: Include builtins.h.
(predicate_mem_writes): Put result of get_object_alignment (ref)
into second argument's value.
* tree-vect-stmts.c (vectorizable_mask_load_store): Put minimum
pointer alignment into second argument's value.
* tree-data-ref.c (get_references_in_stmt): Use value of second
argument for build_aligned_type, and only the type to build
a zero second argument for MEM_REF.
* internal-fn.c (expand_mask_load_optab_fn,
expand_mask_store_optab_fn): Likewise.

From-SVN: r231454

re PR tree-optimization/68583 (Missed if-conversion)

2015-12-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68583
* tree-if-conv.c (if_convertible_phi_p): Drop
flag_tree_loop_if_convert_stores check in favor of the
existing any_mask_load_store check.
(insert_gimplified_predicates): Likewise.
(combine_blocks): Likewise.
(tree_if_conversion): Likewise.
(ifcvt_memrefs_wont_trap): Properly check
flag_tree_loop_if_convert_stores in all places that can end
up introducing store-data-races.
(if_convertible_gimple_assign_stmt_p): Remove restriction
on flag_tree_loop_if_convert_stores for stores we can if-convert
without introducing store-data-races.  Force versioning for
all if-converted stores.

* gcc.dg/tree-ssa/ifc-pr68583.c: New testcase.
* gcc.dg/vect/vect-72.c: Adjust.
* gcc.dg/vect/vect-cselim-2.c: Likewise.
* gcc.dg/vect/vect-strided-store-a-u8-i2.c: Likewise.

From-SVN: r231453

re PR tree-optimization/68417 (Missed vectorization opportunity when setting struct field)

2015-12-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68417
* gcc.dg/vect/pr68417.c: New testcase.

From-SVN: r231452

re PR ada/66526 (apparent use of uninitialized variables in g-expect.adb)

PR ada/66526
* g-expect.adb (Set_Up_Child_Communications): Add matching condition
for uses of Input, Ouput and Error variables after the Execvp call.

From-SVN: r231450

Fix GOMP/GOACC_parallel handling in find_func_clobbers

2015-12-09  Tom de Vries  <tom@codesourcery.com>

PR tree-optimization/68716
* tree-ssa-structalias.c (find_func_clobbers): Fix handling of
BUILT_IN_GOMP_PARALLEL and BUILT_IN_GOACC_PARALLEL.

* testsuite/libgomp.c/omp-nested-2.c: New test.

From-SVN: r231449

Fix newly introduced memory leak in

* hash-traits.h (struct typed_delete_remove): New function.
(typed_delete_remove ::remove): Likewise.
* tree-ssa-loop-ivopts.c (struct iv_common_cand): Replace
auto_vec with vec.
(record_common_cand): Replace XNEW with operator new.

From-SVN: r231448

Fix memory leak in tree-if-conv.c

* tree-if-conv.c (ifcvt_local_dce): Replace vec with auto_vec.

From-SVN: r231447

re PR ipa/68790 (gcc.c-torture/execute/20050713-1.c FAILs with -O0 -fipa-icf)

Fix PR ipa/68790

PR ipa/68790
* ipa-icf.c (sem_function::param_used_p): Return true
if ipa_node_params_sum equals to NULL.
* gcc.dg/ipa/pr68790.c: New test.

From-SVN: r231446

Minor fixes

From-SVN: r231445

re PR tree-optimization/68583 (Missed if-conversion)

2015-12-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68583
* tree-if-conv.c (ifc_dr): Make flags bool, add w_unconditionally
flag and rename predicates to w_predicate, rw_predicate and
base_w_predicate.
(DR_WRITTEN_AT_LEAST_ONCE): Rename to ...
(DR_BASE_W_UNCONDITIONALLY): ... this.
(DR_W_UNCONDITIONALLY): Add.
(hash_memrefs_baserefs_and_store_DRs_read): Adjust.  Compute
unconditionally written separately from read or written.
(ifcvt_memrefs_wont_trap): Properly treat reads.
(ifcvt_could_trap_p): Inline ...
(if_convertible_gimple_assign_stmt_p): ... here.  Refactor
to avoid code duplication.
(if_convertible_loop_p_1): Adjust and properly initialize
predicates.

From-SVN: r231444

tree-vect-stmts.c (vectorizable_load): Set new vinfo only if it was not yet set.

2015-12-09  Richard Biener  <rguenther@suse.de>

* tree-vect-stmts.c (vectorizable_load): Set new vinfo only
if it was not yet set.
* tree-vectorizer.h (set_vinfo_for_stmt): Assert we don't
overwrite an existing entry.

From-SVN: r231443

re PR lto/61886 (LTO breaks fread with _FORTIFY_SOURCE=2)

PR ipa/61886
PR middle-end/25140
* ipa-reference.c (is_improper): Break out from ...
(is_proper_for_analysis): ... here; fix WRT aliases.
(analyze_function, generate_summary,
ipa_reference_write_optimization_summary,
ipa_reference_read_optimization_summary): Use ipa_reference_var_uid.
* ipa-refrence.h (ipa_reference_var_uid): New inline.
* tree-ssa-alias.c (ref_maybe_used_by_call_p_1,
call_may_clobber_ref_p_1): Use ipa_reference_var_uid.

* gcc.c-torture/execute/alias-3.c: New testcase.

From-SVN: r231442

c-omp.c (c_finish_oacc_wait): Remove add_stmt() call.

2015-12-09  Chung-Lin Tang  <cltang@codesourcery.com>

* c-family/c-omp.c (c_finish_oacc_wait): Remove add_stmt() call.
* c/c-parser.c (c_parser_oacc_wait): Add add_stmt() call.
* cp/parser.c (cp_parser_oacc_wait): Add finish_expr_stmt() call.

From-SVN: r231441

re PR lto/61886 (LTO breaks fread with _FORTIFY_SOURCE=2)

PR ipa/61886
* symtab.c (symtab_node::equal_address_to): New parameter
MEMORY_ACCESSED.
* cgraph.h (symtab_node::equal_address_to): Update prototype.

From-SVN: r231440

rx.opt (-mjsr): Add.

* config/rx/rx.opt (-mjsr): Add.
* config/rx/predicates.md (rx_call_operand): Avoid overflowing
calls when -mjsr.
* config/rx/rx.c (rx_function_ok_for_sibcall): Likewise for
overflowing jumps.
* doc/invoke.texi (-mjsr): Document it.

From-SVN: r231439

re PR lto/61886 (LTO breaks fread with _FORTIFY_SOURCE=2)

PR ipa/61886
* lto-streamer.h (lto_symtab_merge_decls, lto_symtab_merge_symbols,
lto_symtab_prevailing_decl): MOve to lto-symtab.h.
* lto-streamer-out.c (DFS::DFS_write_tree_body): Check that
DECL_ABSTRACT_ORIGIN is not error_mark_node.

* lto-symtab.c: Include lto-symtab.h.
(lto_cgraph_replace_node): Do not merge profiles here.
(lto_symtab_merge_p): New function.
(lto_symtab_merge_decls_2): Honor lto_symtab_merge_p.
(lto_symtab_merge_symbols_1): Turn unmerged decls into transparent
aliases.
(lto_symtab_merge_symbols): Do not clear node->aux; we no longer use it.
(lto_symtab_prevailing_decl): Move to lto-symtab.h; rewrite.
* lto.c: Include lto-symtab.h
* lto-symtab.h: New.

From-SVN: r231438

Fix PR c++/68711 - [6 regression] SEGV on an invalid offsetof of a member
of a virtual base.

gcc/testsuite/ChangeLog:
* g++.dg/other/offsetof8.C: New test.

gcc/cp/ChangeLog:
* typeck.c (build_class_member_access_expr): Strip NOPs before
        testing a potentially null operand for equality to zero.

From-SVN: r231437