C++ FE: handle misspelled identifiers and typenames

gcc/cp/ChangeLog:
PR c/70339
PR c/71858
* name-lookup.c: Include gcc-rich-location.h, spellcheck-tree.h,
and parser.h.
(suggest_alternatives_for): If no candidates are found, try
lookup_name_fuzzy and report if if finds a suggestion.
(consider_binding_level): New function.
(lookup_name_fuzzy) New function.
* parser.c: Include gcc-rich-location.h.
(cp_lexer_next_token_is_decl_specifier_keyword): Move most of
logic into...
(cp_keyword_starts_decl_specifier_p): ...this new function.
(cp_parser_diagnose_invalid_type_name): When issuing
"does not name a type" errors, attempt to make a suggestion using
lookup_name_fuzzy.
* parser.h (cp_keyword_starts_decl_specifier_p): New prototype.
* search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Reject
types that are not CLASS_TYPE_P, rather than rejecting individual
tree codes.

gcc/testsuite/ChangeLog:
PR c/70339
PR c/71858
* g++.dg/spellcheck-identifiers.C: New test case, based on
gcc.dg/spellcheck-identifiers.c.
* g++.dg/spellcheck-identifiers-2.C: New test case, based on
gcc.dg/spellcheck-identifiers-2.c.
* g++.dg/spellcheck-typenames.C: New test case, based on
gcc.dg/spellcheck-typenames.c

From-SVN: r238538

S/390: Remove mode size check in encode_section_info.

With the last change the not-aligned symbol ref markers are always set
for modes with size zero.  This is wrong since for larl the size of
the access does not matter.  This patch removes that check entirely
from s390_encode_section_info.  Modes with a size of 0 get rejected in
s390_check_symref_alignment which is used for the load/store relative
instructions to check for natural alignment.

Bootstrapped and regression tested on s390 and s390x with
--with-arch=z900 and --with-arch=z13.

gcc/ChangeLog:

2016-07-20  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* config/s390/s390.c (s390_encode_section_info): Remove mode size
check.

From-SVN: r238536

Document LWG DR 2684 status and regenerate libstdc++ manual

* doc/xml/manual/intro.xml: Document DR 2684 status.
* doc/html/*: Regenerate.

From-SVN: r238535

LWG 2441 Provide exact-width atomic typedefs

* include/std/atomic (atomic_int8_t, atomic_uint8_t, atomic_int16_t)
(atomic_uint16_t, atomic_int32_t, atomic_uint32_t, atomic_int64_t)
(atomic_uint64_t): Define (LWG 2441).
* testsuite/29_atomics/headers/atomic/std_c++0x_neg.cc: Remove empty
lines.
* testsuite/29_atomics/headers/atomic/types_std_c++0x.cc: Test for
the new types.
* doc/xml/manual/intro.xml: Document DR 2441 status.

From-SVN: r238534

LWG 2328 Rvalue stream extraction should use perfect forwarding

* include/std/istream (operator>>(basic_istream&&, _Tp&)): Adjust
to use perfect forwarding (LWG 2328).
* testsuite/27_io/rvalue_streams.cc: Test perfect forwarding.
* doc/xml/manual/intro.xml: Document DR 2328 status.

From-SVN: r238533

Use static pointer to member when catching nullptr

libstdc++-v3:

* libsupc++/pbase_type_info.cc (__pbase_type_info::__do_catch): Use
static objects for catching nullptr as pointer to member types.

gcc/testsuite:

* g++.dg/cpp0x/nullptr35.C: Change expected result for catching as
pointer to member function and also test catching by reference.

From-SVN: r238532

S/390: Fix pr67443.c.

The attached patch rewrites the pr67443.c testcase in a different way
so that the test still works with the changed allocation of globals
pinned to registers.  The test ist hopefully more robust now.

gcc/testsuite/ChangeLog:

2016-07-20  Dominik Vogt  <vogt@linux.vnet.ibm.com>

* gcc.target/s390/pr67443.c: Fix test case.

From-SVN: r238531

S/390: Xfail some tests in insv-[12].c.

The attached patch XFAILs some of the "insv" testcases as
discussed internally.  Tested on s390x biarch and s390.

gcc/testsuite/ChangeLog:

2016-07-20  Dominik Vogt  <vogt@linux.vnet.ibm.com>

* gcc.target/s390/insv-1.c: Xfail some tests.
* gcc.target/s390/insv-2.c: Likewise.

From-SVN: r238530

cse.c: Use HOST_WIDE_INT_M1 instead of ~(HOST_WIDE_INT) 0.

* cse.c: Use HOST_WIDE_INT_M1 instead of ~(HOST_WIDE_INT) 0.
* combine.c: Use HOST_WIDE_INT_M1U instead of
~(unsigned HOST_WIDE_INT) 0.
* double-int.h: Ditto.
* dse.c: Ditto.
* dwarf2asm.c:Ditto.
* expmed.c: Ditto.
* genmodes.c: Ditto.
* match.pd: Ditto.
* read-rtl.c: Ditto.
* tree-ssa-loop-ivopts.c: Ditto.
* tree-ssa-loop-prefetch.c: Ditto.
* tree-vect-generic.c: Ditto.
* tree-vect-patterns.c: Ditto.
* tree.c: Ditto.

From-SVN: r238529

avr.c (avr_legitimize_address): Force constant addresses outside [0,0xc0] into a register.

gcc/
* gcc/config/avr.c (avr_legitimize_address) [AVR_TINY]: Force
constant addresses outside [0,0xc0] into a register.
(avr_out_movhi_r_mr_reg_no_disp_tiny): Pass insn.  And handle
cases where the base address register is unused after.
(avr_out_movhi_r_mr_reg_disp_tiny): Same.
(avr_out_movhi_mr_r_reg_disp_tiny): Same.
(avr_out_store_psi_reg_disp_tiny): Same.

gcc/testsuite/
* gcc.target/avr/torture/get-mem.c: New test.
* gcc.target/avr/torture/set-mem.c: New test.

From-SVN: r238528

Implement attribute progmem on reduced Tiny cores by adding flash offset 0x4000 to respective symbols.

gcc/
Implement attribute progmem on reduced Tiny cores by adding
flash offset 0x4000 to respective symbols.

PR target/71948
* doc/extend.texi (AVR Variable Attributes) [progmem]: Add
documentation how it works on reduced Tiny cores.
(AVR Named Address Spaces): No support for reduced Tiny.
* config/avr/avr.c (AVR_SYMBOL_FLAG_TINY_PM): New macro.
(avr_address_tiny_pm_p): New static function.
(avr_print_operand_address) [AVR_TINY]: Add AVR_TINY_PM_OFFSET
if the address is in progmem.
(avr_assemble_integer): Same.
(avr_encode_section_info) [AVR_TINY]: Set AVR_SYMBOL_FLAG_TINY_PM
for symbol_ref in progmem.
* config/avr/avr.h (AVR_TINY_PM_OFFSET): New macro.
* config/avr/avr-c.c (avr_cpu_cpp_builtins): Use it instead of
magic 0x4000 when built-in def'ing __AVR_TINY_PM_BASE_ADDRESS__.
gcc/testsuite/
PR target/71948
* gcc.target/avr/torture/tiny-progmem.c: New test.

From-SVN: r238525

Build libbackend.a as a thin archive if possible

gcc/ChangeLog:

* configure.ac (thin_archive_support): New variable.  AC_SUBST it.
* configure: Regenerate.
* Makefile.in (THIN_ARCHIVE_SUPPORT): New variable.
(USE_THIN_ARCHIVES): New variable.
(libbackend.a): If USE_THIN_ARCHIVES then pass T to ar to build
this archive as a thin archive.

From-SVN: r238524

Enabling work for C++ handling of misspelled identifiers and typenames

gcc/c/ChangeLog:
* c-decl.c (struct edit_distance_traits<cpp_hashnode *>): Move to
spellcheck-tree.h
(best_macro_match): Likewise, converting from a typedef to a
subclass.
(find_closest_macro_cpp_cb): Move to spellcheck-tree.c.
(lookup_name_fuzzy): Update for change of best_macro_match to a
subclass with a ctor that calls cpp_forall_identifiers.

gcc/ChangeLog:
* diagnostic-show-locus.c (diagnostic_show_locus): If this is the
same location as last time, don't skip if we have fix-it hints.
Clarify the skipping logic by converting it from one "if" clause
to repeated "if" clauses.
* spellcheck-tree.c: Include "cpplib.h".
(find_closest_macro_cpp_cb): Move here from c/c-decl.c.
(best_macro_match::best_macro_match): New constructor.
* spellcheck-tree.h (struct edit_distance_traits<cpp_hashnode *>):
Move here from c/c-decl.c.
(class best_macro_match): Move here from c/c-decl.c, converting
from a typedef to a subclass, gaining a ctor.

From-SVN: r238522

re PR c++/71909 (g++ accepts an unreachable function catch block that lacks a corresponding try)

PR c++/71909
* parser.c (cp_parser_save_member_function_body): Consume
__transaction_relaxed or __transaction_atomic with optional
attribute.  Only skip catch with block if try keyword is seen.

* g++.dg/parse/pr71909.C: New test.
* g++.dg/tm/pr71909.C: New test.

From-SVN: r238521

re PR middle-end/50060 (intrinsics not folded by the middle-end)

PR c++/50060
* constexpr.c (cxx_eval_builtin_function_call): Pass false as lval
when evaluating call arguments.  Use fold_builtin_call_array instead
of fold_build_call_array_loc, return t if it returns NULL.  Otherwise
check the result with potential_constant_expression and call
cxx_eval_constant_expression on it.

* g++.dg/cpp0x/constexpr-50060.C: New test.
* g++.dg/cpp1y/constexpr-50060.C: New test.

From-SVN: r238520

avr-protos.h (avr_addr_space_supported_p): New prototype.

gcc/
* config/avr/avr-protos.h (avr_addr_space_supported_p): New prototype.
* config/avr/avr.c (TARGET_ADDR_SPACE_DIAGNOSE_USAGE): New hook
define...
(avr_addr_space_diagnose_usage): ...and implementation.
(avr_addr_space_supported_p): New function.
(avr_nonconst_pointer_addrspace, avr_pgm_check_var_decl): Only
report bad address space usage if that space is supported.
(avr_insert_attributes): Same.  No more complain about unsupported
address spaces.
* config/avr/avr-c.c (tm_p.h): Include it.
(avr_cpu_cpp_builtins): Only define addr-space related built-in
macro if avr_addr_space_supported_p.

From-SVN: r238519

nvptx: do not implicitly enable -ftoplevel-reorder

* config/nvptx/nvptx.c (nvptx_option_override): Do not set
flag_toplevel_reorder.

From-SVN: r238518

C: convert return type of lookup_name_fuzzy from tree to const char *

gcc/c-family/ChangeLog:
* c-common.h (lookup_name_fuzzy): Convert return type from tree to
const char *.

gcc/c/ChangeLog:
* c-decl.c (implicit_decl_warning): Update for conversion of
return type of lookup_name_fuzzy to const char *.
(undeclared_variable): Likewise.
(lookup_name_fuzzy): Convert return type from tree to
const char *.
* c-parser.c (c_parser_declaration_or_fndef): Update for
conversion of return type of lookup_name_fuzzy to const char *.
(c_parser_parameter_declaration): Likewise.

gcc/ChangeLog:
* gcc-rich-location.c
(gcc_rich_location::add_fixit_misspelled_id): New overload, taking
a const char *.
* gcc-rich-location.h
(gcc_rich_location::add_fixit_misspelled_id): Likewise.

From-SVN: r238517

target.def (addr_space): Add new diagnose_usage to hook vector.

gcc/
* target.def (addr_space): Add new diagnose_usage to hook vector.
* targhooks.c (default_addr_space_diagnose_usage): Add default
implementation and...
* targhooks.h (default_addr_space_diagnose_usage): ... its prototype.
* c/c-parser.c (c_lex_one_token) [CPP_NAME]: If the token
is some address space, call targetm.addr_space.diagnose_usage.
* doc/tm.texi.in (Named Address Spaces): Add anchor for
TARGET_ADDR_SPACE_DIAGNOSE_USAGE documentation.
* doc/tm.texi: Regenerate.

From-SVN: r238514

Properly handly PHI stmts in later_of_the_two (PR

PR middle-end/71898
* graphite-isl-ast-to-gimple.c (later_of_the_two):
Properly handly PHI stmts.
* gfortran.dg/graphite/pr71898.f90: New test.

From-SVN: r238513

re PR tree-optimization/71503 (gcc ICE at -O3 on valid code on x86_64-linux-gnu in "gen_phi_arg_condition")

PR tree-optimization/71503
PR tree-optimization/71683
* tree-if-conv.c (gen_phi_arg_condition): Record true predicate
and break.

gcc/testsuite
PR tree-optimization/71503
PR tree-optimization/71683
* gcc.dg/tree-ssa/ifc-pr71503.c: New test.
* gcc.dg/tree-ssa/ifc-pr71683.c: New test.

From-SVN: r238512

configure.ac (nds32*-*-*): Remove entry to enable gdb.

    * configure.ac (nds32*-*-*): Remove entry to enable gdb.
    * configure: Regenerated.

From-SVN: r238511

Enhance documentation of -fipa-ra option.

* doc/invoke.texi (-fipa-ra): Document when the option is
disabled. Fix a typo.

From-SVN: r238510

Add selftests for fibonacci_heap

* Makefile.in: Include fibonacci_heap.c
* fibonacci_heap.c: New file.
* fibonacci_heap.h (fibonacci_heap::insert): Use insert_node.
(fibonacci_heap::union_with): Fix deletion of the second heap.
* selftest-run-tests.c (selftest::run_tests): Incorporate
fibonacci heap tests.
* selftest.h: Declare fibonacci_heap_c_tests.

From-SVN: r238509

Add sreal to selftests

* selftest-run-tests.c (selftest::run_tests): New function.
* selftest.h (sreal_c_tests): Declare.
* sreal.c (sreal_verify_basics): New function.
(verify_aritmetics): Likewise.
(sreal_verify_arithmetics): Likewise.
(verify_shifting): Likewise.
(sreal_verify_shifting): Likewise.
(void sreal_c_tests): Likewise.
* gcc.dg/plugin/plugin.exp: Remove sreal test.
* gcc.dg/plugin/sreal-test-1.c: Remove.
* gcc.dg/plugin/sreal_plugin.c: Remove.

From-SVN: r238508

PR c++/67164 - clean up dead code

* pt.c (iterative_hash_template_arg, template_args_equal): Don't
handle ARGUMENT_PACK_SELECT.

From-SVN: r238507

Daily bump.

From-SVN: r238506

re PR fortran/71902 (Unneeded temporary on reallocatable character assignment)

2016-07-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/71902
* dependency.c (gfc_check_dependency): Use dep_ref.  Handle case
if identical is true and two array element references differ.
(gfc_dep_resovler):  Move most of the code to dep_ref.
(dep_ref):  New function.
* frontend-passes.c (realloc_string_callback):  Name temporary
variable "realloc_string".

2016-07-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/71902
* gfortran.dg/dependency_47.f90:  New test.

From-SVN: r238497

re PR rtl-optimization/71916 (ICE at -O3 on valid code on x86_64-linux-gnu in "maybe_record_trace_start")

PR rtl-optimization/71916
* cfgrtl.c (contains_no_active_insn_p): Return false also for
bb which have a single succ fake edge.

* gcc.c-torture/compile/pr71916.c: New test.

From-SVN: r238490

re PR debug/71855 (duplicate unspecified_parameters DIE in DWARF for functions with variable arguments)

PR debug/71855
* dwarf2out.c (gen_subprogram_die): Only call
gen_unspecified_parameters_die while dumping early dwarf.

From-SVN: r238488

re PR middle-end/71874 (memmove works wrong)

PR middle-end/71874
* gimple-fold.c (fold_builtin_memory_op): Use
get_addr_base_and_unit_offset instead of get_ref_base_and_extent.

* g++.dg/torture/pr71874.C: New test.

From-SVN: r238484

re PR middle-end/71734 (FAIL: libgomp.fortran/simd4.f90   -O3 -g  execution test)

PR middle-end/71734
* g++.dg/vect/pr70729.cc: Don't include string.h or xmmintrin.h.
(my_alloc): Rewritten to use __builtin_posix_memalign and
__SIZE_TYPE__.
(my_free): Use __builtin_free instead of _mm_free.
(Vec::operator=): Use __builtin_memcpy.

From-SVN: r238482

builtins.c: Use HOST_WIDE_INT_1 instead of (HOST_WIDE_INT) 1...

* builtins.c: Use HOST_WIDE_INT_1 instead of (HOST_WIDE_INT) 1,
HOST_WIDE_INT_1U instead of (unsigned HOST_WIDE_INT) 1,
HOST_WIDE_INT_M1 instead of (HOST_WIDE_INT) -1 and
HOST_WIDE_INT_M1U instead of (unsigned HOST_WIDE_INT) -1.
* combine.c: Ditto.
* cse.c: Ditto.
* dojump.c: Ditto.
* double-int.c: Ditto.
* dse.c: Ditto.
* dwarf2out.c: Ditto.
* expmed.c: Ditto.
* expr.c: Ditto.
* fold-const.c: Ditto.
* function.c: Ditto.
* fwprop.c: Ditto.
* genmodes.c: Ditto.
* hwint.c: Ditto.
* hwint.h: Ditto.
* ifcvt.c: Ditto.
* loop-doloop.c: Ditto.
* loop-invariant.c: Ditto.
* loop-iv.c: Ditto.
* match.pd: Ditto.
* optabs.c: Ditto.
* real.c: Ditto.
* reload.c: Ditto.
* rtlanal.c: Ditto.
* simplify-rtx.c: Ditto.
* stor-layout.c: Ditto.
* toplev.c: Ditto.
* tree-ssa-loop-ivopts.c: Ditto.
* tree-vect-generic.c: Ditto.
* tree-vect-patterns.c: Ditto.
* tree.c: Ditto.
* tree.h: Ditto.
* ubsan.c: Ditto.
* varasm.c: Ditto.
* wide-int-print.cc: Ditto.
* wide-int.cc: Ditto.
* wide-int.h: Ditto.

From-SVN: r238481

selftest.c: gracefully handle NULL in assert_streq

gcc/ChangeLog:
* selftest.c (selftest::assert_streq): Handle NULL values of
val_actual and val_expected.

From-SVN: r238479

config.host (m32r): Add m32r/t-m32r to tmake_file.

* config.host (m32r): Add m32r/t-m32r to tmake_file.
Add crtinit.o and crtfini.o to extra_parts.

From-SVN: r238478

re PR fortran/71688 (ICE in analyze, at cgraphunit.c:632 with -fcoarray=lib)

Fix PR fortran/71688

2016-07-19  Martin Jambor  <mjambor@suse.cz>

        PR fortran/71688
        * trans-decl.c (gfc_generate_function_code): Use cgraph_get_create_node
        rather than cgraph_create_node to get a call graph node.

testsuite/
        gfortran.dg/pr71688.f90: New test.

From-SVN: r238476

gimple-fold.c (get_base_constructor): Add VIEW_CONVERT case, handle all tcc_constant bases and valueize SSA names.

2016-07-19  Richard Biener  <rguenther@suse.de>

* gimple-fold.c (get_base_constructor): Add VIEW_CONVERT case,
handle all tcc_constant bases and valueize SSA names.
* tree-ssa-sccvn.c (fully_constant_vn_reference_p): Handle
tcc_constant bases.

* c-c++-common/vector-subscript-6.c: New testcase.
* c-c++-common/vector-subscript-7.c: Likewise.

From-SVN: r238475

Fix failing test for targets with sizeof(int) != 4.

gcc/testsuite/

2016-07-19  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>

* gcc.dg/params/blocksort-part.c: Conditionally define Int32
and UInt32 based on __SIZEOF_INT__.

From-SVN: r238471

Fix copy&paste bug in function-tests.c

gcc/ChangeLog:
* function-tests.c (selftest::verify_three_block_rtl_cfg): Verify
the flags of the exit block and bb2, not just the entry block.

From-SVN: r238470

MAINTAINERS (Write After Approval): Add myself.

2016-07-19  Fritz Reese  <fritzoreese@gmail.com>

* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r238469

re PR tree-optimization/71901 (ice in find_or_generate_expression)

2016-07-19  Richard Biener  <rguenther@suse.de>

PR tree-optimization/71901
* tree-ssa-sccvn.h (struct vn_reference_op_struct): Add
align member, group stuff with the bitfield.
(vn_ref_op_align_unit): New inline.
* tree-ssa-sccvn.c (copy_reference_ops_from_ref): For ARRAY_REFs
record element alignment and operand 3 unchanged.
(ao_ref_init_from_vn_reference): Adjust.
(valueize_refs_1): Likewise.
* tree-ssa-pre.c (create_component_ref_by_pieces_1): Likewise.

* gcc.dg/torture/pr71901.c: New testcase.

From-SVN: r238468

re PR tree-optimization/71908 (ICE at -Os and above in both 32-bit and 64-bit modes on x86_64-linux-gnu (get_constraint_for_component_ref))

2016-07-18  Richard Biener  <rguenther@suse.de>

PR tree-optimization/71908
* tree-ssa-structalias.c (get_constraint_for_component_ref): Handle
symbolic constants in a more reliable way.

* gcc.dg/torture/pr71908.c: New testcase.

From-SVN: r238467

tree-vect-loop-manip.c (vect_update_ivs_after_vectorizer): Update comment.

gcc/

* tree-vect-loop-manip.c (vect_update_ivs_after_vectorizer): Update
comment.
(vect_update_inits_of_drs): Likewise.
(vect_create_cond_for_alias_checks): Likewise.
* tree-vect-loop.c (vect_get_known_peeling_cost): Likewise.

From-SVN: r238466

re PR middle-end/71907 (missing buffer overflow warnings with -flto)

2016-07-19  Richard Biener  <rguenther@suse.de>

PR lto/71907
* lto-streamer-out.c (DFS::DFS_write_tree_body): For blocks
with an abstract origin that is not an inlined function outer
scope add a self-reference as abstract origin.
* tree-streamer-out.c (write_ts_block_tree_pointers): Likewise.

From-SVN: r238456

re PR target/71493 (accidental ABI change for structure return on PowerPC)

[gcc]
2016-07-18  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR target/71493
* config/rs6000/rs6000.c (rs6000_function_value): Fix
unintentional System V.4 structure return breakage for structures
with a single floating point element.

[gcc/testsuite]
2016-07-18  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR target/71493
* gcc.target/powerpc/pr71493-1.c: New test.
* gcc.target/powerpc/pr71493-2.c: Likewise.

From-SVN: r238454

Daily bump.

From-SVN: r238453

re PR c++/70869 (internal compiler error: Segmentation fault on array of pointer to function members)

PR c++/70869
PR c++/71054
* cp-gimplify.c (cp_genericize_r): Revert the 2016-07-07 change.
* tree.c (cp_walk_subtrees): For DECL_EXPR on DECL_ARTIFICIAL
non-static VAR_DECL, walk the decl's DECL_INITIAL, DECL_SIZE and
DECL_SIZE_UNIT.

From-SVN: r238444

re PR c++/71835 (ICE on invalid C++ code with ambiguous overloaded operators: tree check: expected tree that contains ‘decl minimal’ structure, have ‘pointer_type’ in convert_like_real, at cp/call.c:6549)

PR c++/71835
* call.c (build_op_call_1): Use convert_like_with_context only
if cand->fn is a decl.

* g++.dg/conversion/ambig3.C: New test.

From-SVN: r238443

re PR c++/71828 (ICE on valid C++11 code with constexpr __Complex int variable declaration: in operand_equal_p, at fold-const.c:2790)

PR c++/71828
* constexpr.c (cxx_eval_constant_expression) <case REALPART_EXPR>:
For lval don't use cxx_eval_unary_expression and instead recurse
and if needed rebuild the reference.

* g++.dg/cpp0x/constexpr-71828.C: New test.

From-SVN: r238442

re PR c++/71826 (ICE on valid C++ code with ambiguous member lookup: tree check: expected baselink, have error_mark in tsubst_baselink, at cp/pt.c:13737)

PR c++/71826
* pt.c (tsubst_baselink): Only set BASELINK_OPTYPE for BASELINK_P.

* g++.dg/template/pr71826.C: New test.

From-SVN: r238441

re PR c++/71822 (ICE: in gimplify_expr, at gimplify.c:11025)

PR c++/71822
* cp-gimplify.c (cp_gimplify_expr) <case VEC_INIT_EXPR>: Recursively
fold *expr_p before genericizing it.

* g++.dg/template/defarg21.C: New test.

From-SVN: r238440

re PR c++/71871 (ICE on mixing templates and vector extensions ternary operator)

PR c++/71871
* typeck.c (build_x_conditional_expr): Revert the 2012-10-25 change.

* g++.dg/ext/vector31.C: New test.

From-SVN: r238439

pr70017.c: Do not check for warning on alpha*-*-*.

* gcc.dg/pr70017.c: Do not check for warning on alpha*-*-*.

From-SVN: r238438

Demangle C++17 fold-expressions.

* cp-demangle.c (cplus_demangle_operators): Add f[lrLR].
(d_expression_1): Handle them.
(d_maybe_print_fold_expression): New.
(d_print_comp_inner): Use it.
(d_index_template_argument): Handle negative index.

From-SVN: r238437

Clean up optional's comments.

From-SVN: r238436

re PR middle-end/71734 (FAIL: libgomp.fortran/simd4.f90   -O3 -g  execution test)

gcc/

2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

PR tree-optimization/71734
* tree-ssa-loop-im.c (ref_indep_loop_p_1): Add REF_LOOP argument which
contains REF, use it to check safelen, assume that safelen value
must be greater 1, fix style.
(ref_indep_loop_p_2): Add REF_LOOP argument.
(ref_indep_loop_p): Pass LOOP as additional argument to
ref_indep_loop_p_2.

gcc/testsuite/

2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

PR tree-optimization/71734
* g++.dg/vect/pr70729.cc: Delete redundant dg options, fix style.

From-SVN: r238435

Allocate constant size dynamic stack space in the prologue

The attached patch fixes a warning during Linux kernel compilation
on S/390 due to -mwarn-dynamicstack and runtime alignment of stack
variables with constant size causing cfun->calls_alloca to be set
(even if alloca is not used at all).  The patched code places
constant size runtime aligned variables in the "virtual stack
vars" area instead of creating a "virtual stack dynamic" area.

This behaviour is activated by defining

  #define ALLOCATE_DYNAMIC_STACK_SPACE_IN_PROLOGUE 1

in the backend; otherwise the old logic is used.

The kernel uses runtime alignment for the page structure (aligned
to 16 bytes), and apart from triggereing the alloca warning
(-mwarn-dynamicstack), the current Gcc also generates inefficient
code like

  aghi %r15,-160  # prologue: create stack frame
    lgr %r11,%r15   # prologue: generate frame pointer
      aghi %r15,-32   # space for dynamic stack

which could be simplified to

  aghi %r15,-192

(if later optimization passes are able to get rid of the frame
pointer).  Is there a specific reason why the patched behaviour
shouldn't be used for all platforms?

--

As the placement of runtime aligned stack variables with constant
size is done completely in the middleend, I don't see a way to fix
this in the backend.

gcc/ChangeLog:

2016-07-18  Dominik Vogt  <vogt@linux.vnet.ibm.com>

* cfgexpand.c (expand_stack_vars): Implement synamic stack space
allocation in the prologue.
* explow.c (get_dynamic_stack_base): New function to return an address
expression for the dynamic stack base.
(get_dynamic_stack_size): New function to do the required dynamic stack
space size calculations.
(allocate_dynamic_stack_space): Use new functions.
(align_dynamic_address): Move some code from
allocate_dynamic_stack_space to new function.
* explow.h (get_dynamic_stack_base, get_dynamic_stack_size): Export.

gcc/testsuite/ChangeLog:

2016-07-18  Dominik Vogt  <vogt@linux.vnet.ibm.com>

* gcc.target/s390/warn-dynamicstack-1.c: New test.
* gcc.dg/stack-usage-2.c (foo3): Adapt expected warning.
stack-layout-dynamic-1.c: New test.

From-SVN: r238432

S/390: Fix alignment check for literal pool references.

gcc/ChangeLog:

2016-07-18  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* config/s390/s390.c (s390_encode_section_info): Always set
notaligned marker if mode size is 0 or no MEM_ALIGN info could be
found.

gcc/testsuite/ChangeLog:

2016-07-18  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

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

From-SVN: r238427

re PR tree-optimization/71893 (gfortran.dg ICEs in gcc/tree-ssa-pre.c; -fcode-hoisting?)

2016-07-18  Richard Biener  <rguenther@suse.de>

PR tree-optimization/71893
* tree-ssa-pre.c (create_component_ref_by_pieces_1): Compensate
for sizetype cast added by array_ref_element_size.
* tree-ssa-sccvn.c (copy_reference_ops_from_ref): Likewise.

From-SVN: r238426

Daily bump.

From-SVN: r238424

re PR fortran/71523 (Static variables given automatic initializers with -finit-* and -fmax-stack-var-size)

2016-07-17  Fritz Reese  <fritzoreese@gmail.com>

PR fortran/71523
* trans-decl.c (gfc_finish_var_decl): Replace automatic initializer with
a static one.

* gfortran.dg/pr71523_1.f90: New test.
* gfortran.dg/pr71523_2.f90: New test.

From-SVN: r238420

Daily bump.

From-SVN: r238419

pa.c (hppa_profile_hook): Allocate stack space for register parameters.

* config/pa/pa.c (hppa_profile_hook): Allocate stack space for
register parameters.  Remove code to initialize argument pointer
on TARGET_64BIT.  Optimize call to _mcount when it can be reached
using a pc-relative branch.  Cleanup conditional code.
* config/pa/pa.md (call_mcount): New expander.
(call_mcount_nonpic): New insn.
(call_mcount_pic): New insn and split.
(call_mcount_pic_post_reload): New insn.
(call_mcount_64bit): New insn and split.
(call_mcount_64bit_post_reload): New insn.

From-SVN: r238414

nullptr35.C (caught): Fix typo.

* g++.dg/cpp0x/nullptr35.C (caught): Fix typo.

From-SVN: r238413

Daily bump.

From-SVN: r238409

Replace references to C++0x with C++11 in comments

* include/bits/algorithmfwd.h: Change C++0x to C++11 in comments.
* include/bits/move.h: Likewise.
* include/bits/postypes.h: Likewise.
* include/debug/bitset: Likewise.
* include/ext/pb_ds/detail/type_utils.hpp: Likewise.
* include/ext/string_conversions.h: Change C++0x to __cxx11 in
comment.
* testsuite/27_io/fpos/14320-1.cc: Change C++0x to C++11 in comment.
* testsuite/util/thread/all.h: Likewise.

From-SVN: r238402

re PR fortran/62125 (Nested select type not accepted (rejects valid))

2016-07-15  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
    Marco Restelli <mrestelli@gmail.com>

PR fortran/62125
* symbol.c (select_type_insert_tmp): Recursively call self to take care
of nested select type.

* gfortran.dg/pr62125.f90: New test.

Co-Authored-By: Marco Restelli <mrestelli@gmail.com>
From-SVN: r238400

Remove redundant std::move in std::for_each

* include/bits/stl_algo.h (for_each): Remove redundant _GLIBCXX_MOVE
and adjust comment.

From-SVN: r238399

divkc3-1.c: Require p8vector support.

2016-07-15  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

* gcc.target/powerpc/divkc3-1.c: Require p8vector support.
* gcc.target/powerpc/mulkc3-1.c: Likewise.

From-SVN: r238398

PR c++/71495 - spurious note during SFINAE.

* call.c (convert_like_real): Mask complain.
* semantics.c (perform_koenig_lookup): Likewise.

From-SVN: r238397

c++/58796 Make nullptr match exception handlers of pointer type

libstdc++-v3:

PR c++/58796
* libsupc++/pbase_type_info.cc (__pbase_type_info::__do_catch): Make
nullptr match handlers of pointer type.

gcc/testsuite:

PR c++/58796
* g++.dg/cpp0x/nullptr21.C: Remove void* handlers.
* g++.dg/cpp0x/nullptr35.C: New test.

From-SVN: r238396

PR c++/71092 - ICE with array and constexpr.

* constexpr.c (cxx_eval_call_expression): Fail quietly when cgraph
threw away DECL_SAVED_TREE.

From-SVN: r238395

PR c++/71117 - core 2189 and generic lambda

* call.c (add_template_conv_candidate): Disable if there are
viable candidates.

From-SVN: r238394

PR c++/71511 - ICE on decltype scope in declaration.

* typeck2.c (cxx_incomplete_type_diagnostic): Handle DECLTYPE_TYPE.

From-SVN: r238393

PR c++/71513 - alignas on member enum in template

* pt.c (tsubst_attributes): Fix loop logic.

From-SVN: r238392

PR c++/71604 - type definition in range-based for

PR c++/54430
* parser.c (cp_parser_range_for): Modify IDENTIFIER_BINDING directly.
(cp_parser_simple_declaration): Diagnose type definition in
for-range-declaration.

From-SVN: r238391

PR c++/71711 - mangle C++1z fold-expressions.

* operators.def: Add *_FOLD_EXPR.
* cp-tree.h (FOLD_EXPR_P): Parenthesize.
* mangle.c (write_expression): Handle fold-expressions.
* pt.c (tsubst_unary_left_fold, tsubst_binary_left_fold)
(tsubst_unary_right_fold, tsubst_binary_right_fold): Handle
partial instantiation.

From-SVN: r238390

PR c++/71814 - mangling sizeof... (sP and sZ)

gcc/cp/
* mangle.c (write_expression): Handle sizeof... an argument pack.
libiberty/
* cp-demangle.c (cplus_demangle_operators): Add sP and sZ.
(d_print_comp_inner): Handle them.
(d_template_args_1): Split out from d_template_args.
(d_args_length): New.

From-SVN: r238389

Update -fabi-version default to 11.

* c-opts.c (c_common_post_options): Update -fabi-version default to 11.

From-SVN: r238388

PR c++/71718 - infinite recursion and alias template

* pt.c (push_tinst_level_loc): Set at_eof before fatal_error.

From-SVN: r238387

PR c++/70824 - initializer_list in template

* init.c (constant_value_1): Don't instantiated DECL_INITIAL of
artificial variables.

From-SVN: r238386

Implement C++17 P0025 clamp.

2016-07-15  Edward Smith-Rowland  <3dw4rd@verizon.net>

Implement C++17 P0025 clamp.
* include/bits/algorithmfwd.h: Declare clamp overloads.
* include/bits/stl_algo.h: Implement clamp.  Feature __cpp_lib_clamp.
* testsuite/25_algorithms/clamp/1.cc: New test.
* testsuite/25_algorithms/clamp/2.cc: New test.
* testsuite/25_algorithms/clamp/constexpr.cc: New test.
* testsuite/25_algorithms/clamp/requirements/explicit_instantiation/
1.cc: New test.
* testsuite/25_algorithms/clamp/requirements/explicit_instantiation/
pod.cc: New test.

From-SVN: r238383

Typo.

From-SVN: r238382

predicates.md (const_m255_to_m1_operand): New.

* config/avr/predicates.md (const_m255_to_m1_operand): New.
* config/avr/constraints.md (Cn8, Ca1, Co1, Yx2): New constraints.
* config/avr/avr.md (add<mode>3) <ALL1>: Make "r,0,r" more
expensive.
(*cmphi.zero-extend.0, *cmphi.zero-extend.1)
(*usum_widenqihi3, *udiff_widenqihi3)
(*addhi3_zero_extend.const): New combiner insns.
(andqi3, iorqi3): Provide "l" (NO_LD_REGS) alternative if
just 1 bit is affected.
* config/avr/avr.c (avr_out_bitop) <QImode>: Don't access xop[3].
(avr_out_compare) [EQ,NE]: Tweak comparing d-regs against -1.

From-SVN: r238381

Fix up ChangeLog entry.

From-SVN: r238378

scev-8.c: Update test string.

gcc/testsuite
* gcc.dg/tree-ssa/scev-8.c: Update test string.

From-SVN: r238377

c-parser.c (c_parser_oacc_declare): Don't scan for GOMP_MAP_POINTER.

gcc/c/
* c-parser.c (c_parser_oacc_declare): Don't scan for
GOMP_MAP_POINTER.
* c-typeck.c (handle_omp_array_sections): Mark data clauses with
GOMP_MAP_FORCE_{PRESENT,TO,FROM,TOFROM} as potentially having
zero-length subarrays.

gcc/cp/
* parser.c (cp_parser_oacc_declare): Don't scan for
GOMP_MAP_POINTER.
* semantics.c (handle_omp_array_sections): Mark data clauses with
GOMP_MAP_FORCE_{PRESENT,TO,FROM,TOFROM} as potentially having
zero-length subarrays.

gcc/
* omp-low.c (lower_omp_target): Mark data clauses with
GOMP_MAP_FORCE_{PRESENT,TO,FROM,TOFROM} as potentially having
zero-length subarrays.

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

From-SVN: r238376

openmp.c (gfc_match_omp_clauses): Scan for clause vector_length before vector.

gcc/fortran/
* openmp.c (gfc_match_omp_clauses): Scan for clause vector_length
before vector.

gcc/testsuite/
* gfortran.dg/goacc/vector_length.f90: New test.

From-SVN: r238375

re PR tree-optimization/71881 (ICE on valid code at -O3 with -g enabled on x86_64-linux-gnu: cannot update SSA form)

2016-07-15  Richard Biener  <rguenther@suse.de>

PR tree-optimization/71881
* tree-loop-distribution.c (destroy_loop): Remove blocks in
reverse DOM order to make debug temp generation happy.

* gcc.dg/torture/pr71881.c: New testcase.

From-SVN: r238374

re PR tree-optimization/71887 (wrong code (SIGFPE) at -O1 and above on x86_64-linux-gnu (in both 32-bit and 64-bit modes))

2016-07-15  Richard Biener  <rguenther@suse.de>

PR tree-optimization/71887
* tree-ssa-phiopt.c (absorbing_element_p): Add rhs arg and
verify it is not zero for division / modulo handling.
(value_replacement): Adjust.

* gcc.dg/torture/pr71887.c: New testcase.

From-SVN: r238373

[PATCH/AARCH64] Add rtx_costs routine for vulcan.

gcc/ChangeLog:

2016-07-15  Virendra Pathak  <virendra.pathak@broadcom.com>
    Julian Brown  <julian@codesourcery.com>

* config/aarch64/aarch64-cores.def: Update vulcan COSTS.
* config/aarch64/aarch64-cost-tables.h
(vulcan_extra_costs): New variable.
* config/aarch64/aarch64.c
(vulcan_addrcost_table): Likewise.
(vulcan_regmove_cost): Likewise.
(vulcan_vector_cost): Likewise.
(vulcan_branch_cost): Likewise.
(vulcan_tunings): Likewise.

Co-Authored-By: Julian Brown <julian@codesourcery.com>
From-SVN: r238372

handle undefined extern vars in output_in_order

* cgraphunit.c (cgraph_order_sort_kind): New entry ORDER_VAR_UNDEF.
(output_in_order): Loop over undefined variables too.  Output them
via assemble_undefined_decl.  Skip variables that correspond to hard
registers or have value-exprs.
* varpool.c (symbol_table::output_variables): Handle undefined
variables together with defined ones.

From-SVN: r238371

tree-ssa-pre.c (get_representative_for): Make sure to return the value number of SSA names.

2016-07-15  Richard Biener  <rguenther@suse.de>

* tree-ssa-pre.c (get_representative_for): Make sure to return
the value number of SSA names.
(phi_translate_1): get_representative_for cannot return NULL.
(do_pre_regular_insertion): Remove redundant call to
fully_constant_expression.
(do_pre_partial_partial_insertion): Likewise.

From-SVN: r238370

re PR c/71858 (Surprising suggestions for misspellings)

PR c/71858
* c-common.h (enum lookup_name_fuzzy_kind): Add
FUZZY_LOOKUP_FUNCTION_NAME.

* c-decl.c (implicit_decl_warning): Use FUZZY_LOOKUP_FUNCTION_NAME
instead of FUZZY_LOOKUP_NAME.
(lookup_name_fuzzy): For FUZZY_LOOKUP_FUNCTION_NAME consider
FUNCTION_DECLs, {VAR,PARM}_DECLs function pointers and macros.

* gcc.dg/spellcheck-identifiers-3.c: New test.

From-SVN: r238369

re PR fortran/71807 (Internal compiler error with NULL() reference in structure constructor)

gcc/fortran/ChangeLog:

2016-07-15  Andre Vehreschild  <vehre@gcc.gnu.org>

PR fortran/71807
* trans-expr.c (gfc_trans_subcomponent_assign): Special casing
when allocatable component is set to null() in initializer.

gcc/testsuite/ChangeLog:

2016-07-15  Andre Vehreschild  <vehre@gcc.gnu.org>

PR fortran/71807
* gfortran.dg/null_9.f90: New test.

From-SVN: r238368

tree-scalar-evolution.c (simple_iv_with_niters): New funcion.

* tree-scalar-evolution.c (simple_iv_with_niters): New funcion.
(derive_simple_iv_with_niters): New function.
(simple_iv): Rewrite using simple_iv_with_niters.
* tree-scalar-evolution.h (simple_iv_with_niters): New decl.
* tree-ssa-loop-niter.c (number_of_iterations_exit_assumptions): New
function.
(number_of_iterations_exit): Rewrite using above function.
* tree-ssa-loop-niter.h (number_of_iterations_exit_assumptions): New
Decl.

gcc/testsuite
* gcc.dg/tree-ssa/loop-41.c: New test.

From-SVN: r238367

re PR tree-optimization/71347 (Performance drop after r235513 on x86-64 in 32-bit mode.)

gcc/testsuite
PR tree-optimization/71347
* gcc.dg/tree-ssa/pr71347.c: XFAIL on ia64, arm, m68k and sparc.

From-SVN: r238366

Fix the constraints for any's assignment operator template to properly
reject assignment from a non-copyable lvalue.

From-SVN: r238365

i386.c (ix86_builtin_vectorization_cost): Adjust vec_construct cost.

2016-07-15  Richard Biener  <rguenther@suse.de>

* config/i386/i386.c (ix86_builtin_vectorization_cost): Adjust
vec_construct cost.

From-SVN: r238364

Daily bump.

From-SVN: r238362