Attempts to dump via -fopt-info from a plugin pass fail, due
to the dfi->alt_state for such passes never being set.

This is because the -fopt-info options were being set up per-pass
during option-parsing (via gcc::dump_manager::opt_info_enable_passes),
but this data was not retained or used it for passes created later
(for plugins and target-specific passes).

This patch fixes the issue by storing the -fopt-info options into
gcc::dump_manager, refactoring the dfi-setup code out of
opt_info_enable_passes, and reusing it for such passes, fixing the
issue.  The patch adds a demo plugin to test that dumping from a
plugin works.

gcc/ChangeLog:
	* dumpfile.c (gcc::dump_manager::dump_manager): Initialize new
	fields.
	(gcc::dump_manager::~dump_manager): Free m_optinfo_filename.
	(gcc::dump_manager::register_pass): New member function, adapted
	from loop body in gcc::pass_manager::register_pass, adding a
	call to update_dfi_for_opt_info.
	(gcc::dump_manager::opt_info_enable_passes): Store the
	-fopt-info options into the new fields.  Move the loop
	bodies into...
	(gcc::dump_manager::update_dfi_for_opt_info): ...this new member
	function.
	* dumpfile.h (struct opt_pass): New forward decl.
	(gcc::dump_manager::register_pass): New decl.
	(gcc::dump_manager::update_dfi_for_opt_info): New decl.
	(class gcc::dump_manager): Add fields "m_optgroup_flags",
	"m_optinfo_flags", and "m_optinfo_filename".
	* passes.c (gcc::pass_manager::register_pass): Move all of the
	dump-handling code to gcc::dump_manager::register_pass.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/dump-1.c: New test.
	* gcc.dg/plugin/dump_plugin.c: New test plugin.
	* gcc.dg/plugin/plugin.exp (plugin_test_list): Add the above.

From-SVN: r264844

From-SVN: r264843

gcc/
	PR rtl-optimization/87466
	* target.def (setjmp_preserves_nonvolatile_regs_p): New target hook.
	* doc/tm.texi.in (TARGET_SETJMP_PRESERVES_NONVOLATILE_REGS_P): New hook.
	* doc/tm.texi: Regenerate.
	* ira-lives.c (process_bb_node_lives): Use the new target hook.
	* lra-lives.c (process_bb_lives): Likewise.
	* config/rs6000/rs6000.c (TARGET_SETJMP_PRESERVES_NONVOLATILE_REGS_P):
	Define.

gcc/testsuite/
	PR rtl-optimization/87466
	* gcc.target/powerpc/pr87466.c: New test.

From-SVN: r264842

This fixes the superfluous assignment that Coverity reported in add_params,
and changes the starting index from 0 to num_params - n in order for it to
work properly if add_params is called multiple times.

validate_params calls error so it doesn't matter that we don't check the
results here.  The results is checked in individual parameter updates after
front-end initialization.

2018-10-04  Tamar Christina  <tamar.christina@arm.com>

	* params.c (add_params): Fix initialization.

From-SVN: r264841

2018-10-04  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/84107
	* tree-profile.c (init_ic_make_global_vars):
	Remove ic_void_ptr_var and ic_gcov_type_ptr_var.
	Come up with new ic_tuple* variables.  Emit
	__gcov_indirect_call{,_topn} variables.
	(gimple_gen_ic_profiler): Access the variable
	and emit gimple.
	(gimple_gen_ic_func_profiler): Access
	__gcov_indirect_call.callee field.
	(gimple_init_gcov_profiler): Use ptr_type_node.
	* value-prof.c (gimple_ic): Use ptr_type_node.
2018-10-04  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/84107
	* libgcov-profiler.c (__gcov_indirect_call):
	Change type to indirect_call_tuple.
	(struct indirect_call_tuple): New struct.
	(__gcov_indirect_call_topn_profiler): Change type.
	(__gcov_indirect_call_profiler_v2): Use the new
	variables.
	* libgcov.h (struct indirect_call_tuple): New struct
	definition.

From-SVN: r264840

https://gcc.gnu.org/ml/gcc-patches/2018-10/msg00248.html
	* lang-specs.h: Use string contatenation, not line splicing.

From-SVN: r264839

2018-10-04  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR tree-optimization/85787
	* ipa-pure-const.c (malloc_candidate_p_1): Move most of malloc_candidate_p
	into this function and add support for detecting multiple phis.
	(DUMP_AND_RETURN): Move from malloc_candidate_p into top-level macro.

testsuite/
	* gcc.dg/ipa/propmalloc-4.c: New test.

From-SVN: r264838

For a set of object-files, determine symbols that are
 - public but should be static

2018-10-04  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

	* unused_functions.py: New file.

From-SVN: r264837

2018-10-04  Richard Biener  <rguenther@suse.de>

	* gcc.dg/tree-ssa/cunroll-15.c: Add XFAILs for arm and powerpc.

From-SVN: r264836

2018-10-04  Martin Liska  <mliska@suse.cz>

	PR ipa/87491
	* ipa-inline.c (inline_to_all_callers_1):
	Call ultimate_alias_target for node being inlined.

From-SVN: r264835

The unconditional reload of address operand for recognized instruction
in process_address_1 prevent the patch fixing PR85434 from working as
expected. The code in that patch attempts to control which registers are
used to make PIC access but the reload performed by process_address_1
will use generic PIC access. This patch removes the test for the
instruction to be unrecognized to do the reload, thus always avoiding to
reload address operand for fixed constraints (such as "X" used in the
patch).

2018-10-04  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    gcc/
    * lra-constraints.c (process_address_1): Bail out for all
    satisfied fixed constraints.

From-SVN: r264834

        * gimple-ssa-sprintf.c (format_string): Do not hardcode size of
        target's wchar_t.
        * tree.c (get_typenode_from_name): Moved from fortran/trans-types.c.
        * tree.h (get_typenode_from_name): Prototype.

        * trans-types.c (get_typenode_from_name): Moved into gcc/tree.c.

From-SVN: r264833

From-SVN: r264831

i386.md (*cmp<X87MODEF:mode>_<SWI24:mode>_i387): Change operand 2 predicate to nonimmediate_operand.

	* config/i386/i386.md (*cmp<X87MODEF:mode>_<SWI24:mode>_i387):
	Change operand 2 predicate to nonimmediate_operand.
	(*cmp<X87MODEF:mode>_<SWI24:mode>_cc_i387): Ditto.

From-SVN: r264827

From-SVN: r264825

	* libgcc2.c (isnan): Use __builtin_isnan.
	(isfinite): Use __builtin_isfinite.
	(isinf): Use __builtin_isinf.

From-SVN: r264823

	* gimple-ssa-sprintf.c (struct fmtresult): Add new member and
	initialize it.
	(get_string_length): Detect unterminated arrays.
	(format_string): Same.
	(format_directive): Warn about unterminated arrays.
	(handle_gimple_call): Mark statements with no_warning as needed.

	* gcc.dg/warn-sprintf-no-nul.c: New test.

Co-Authored-By: Jeff Law <law@redhat.com>

From-SVN: r264822

	gcc/
	* config/riscv/riscv-c.c (riscv_cpu_cpp_builtins): For ABI_ILP32E,
	also define __riscv_abi_rve.  Delete trailing white space.

From-SVN: r264821

    Enable LRA register allocator for PDP11. -- missed checking in
    ChangeLog.

From-SVN: r264820

    * config/pdp11/constraints.md (Q): Use define_memory_constraints.
    (R): Likewise.
    (D): Likewise.
    * config/pdp11/pdp11.c (pdp11_lra_p): New function.
    * config/pdp11/pdp11.opt (-mlra): New option.
    * doc/invoke.texi (PDP-11 Options): Document -mlra.

From-SVN: r264819

	* config/i386/i386.md (*<absneg:code>extendsfdf2): Remove.
	(*<absneg:code>extend<mode>xf2): Ditto.

From-SVN: r264818

	PR tree-optimization/87415
	* tree-vrp.c (set_value_range_with_overflow): Special case one bit
	precision fields.

From-SVN: r264817

	* gimple-fold.c (get_range_strlen): Only set *nonstr when
	an unterminated string is discovered.  Bubble up range
	even for unterminated strings.
	(gimple_fold_builtin_strlen): Do not fold if get_range_strlen
	indicates the string was not terminated via NONSTR.

From-SVN: r264816

	* tree-vrp.c (extract_range_from_unary_expr): Special case all
	pointer conversions.
	Do not do anything special for anti-ranges.

From-SVN: r264815

	The [[no_unique_address]] attribute on a non-static data member
	enables the equivalent of the empty base optimization.

gcc/cp/
	* tree.c (handle_no_unique_addr_attribute): New.
	(cxx_attribute_table): Add [[no_unique_address]].
	* class.c (field_poverlapping_p): New.
	(layout_class_type): Check it.  Adjust DECL_SIZE of potentially
	overlapping fields.
	(layout_empty_base_or_field): Rename from layout_empty_base, handle
	FIELD_DECL as well.
	(build_base_field, record_subobject_offsets): Adjust.
c-family/
	* c-lex.c (c_common_has_attribute): Add no_unique_address.

From-SVN: r264813

The global locale::_Impl that represents the "C" locale is never
destroyed, so there is no need to keep track of reference count updates
for that object. This greatly reduce contention between threads that
refer to the classic locale. Since the global std::locale initially uses
the classic locale, this benefits the common case for any code using the
global locale, such as construction/destruction of iostream objects.

All these updates are done inside libstdc++.so so there's no need to
worry about users' objects having inlined old versions of the code which
still update the reference count for the classic locale.

	PR libstdc++/59439
	* src/c++98/locale.cc (locale::locale(const locale&)): Bypass
	reference count updates for the classic locale.
	(locale::~locale()): Likewise.
	(locale::operator=(const locale&)): Likewise.
	* src/c++98/locale_init.cc (locale::locale()): Likewise.
	(locale::global(const locale&)): Likewise.

From-SVN: r264811

2018-10-03  Jérôme Lambourg  <lambourg@adacore.com>

	* config/arm/vxworks.h (ARM_TARGET2_DWARF_FORMAT): Adjust to
	DW_EH_PE_pcrel | DW_EH_PE_indirect for RTPs.

From-SVN: r264808

2018-10-03  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/86109
	* coverage.c (coverage_begin_function): Do not
	mark lambdas as artificial.
	* tree-core.h (struct GTY): Remove tm_clone_flag
	and introduce new lambda_function.
	* tree.h (DECL_LAMBDA_FUNCTION): New macro.
2018-10-03  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/86109
	* parser.c (cp_parser_lambda_declarator_opt):
	Set DECL_LAMBDA_FUNCTION for lambdas.
2018-10-03  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/86109
	* g++.dg/gcov/pr86109.C: New test.

From-SVN: r264806

	* include/debug/map.h
	(map<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
	(map<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(map<>::insert(value_type&&)): Likewise.
	(map<>::insert<>(_Pair&&)): Likewise.
	(map<>::insert<>(const_iterator, _Pair&&)): Likewise.
	(map<>::try_emplace): Likewise.
	(map<>::insert_or_assign): Likewise.
	(map<>::insert(node_type&&)): Likewise.
	(map<>::insert(const_iterator, node_type&&)): Likewise.
	(map<>::erase(const_iterator)): Likewise.
	(map<>::erase(const_iterator, const_iterator)): Likewise.
	* include/debug/multimap.h
	(multimap<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
	(multimap<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(multimap<>::insert<>(_Pair&&)): Likewise.
	(multimap<>::insert<>(const_iterator, _Pair&&)): Likewise.
	(multimap<>::insert(node_type&&)): Likewise.
	(multimap<>::insert(const_iterator, node_type&&)): Likewise.
	(multimap<>::erase(const_iterator)): Likewise.
	(multimap<>::erase(const_iterator, const_iterator)): Likewise.
	* include/debug/set.h
	(set<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
	(set<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(set<>::insert(value_type&&)): Likewise.
	(set<>::insert<>(const_iterator, value_type&&)): Likewise.
	(set<>::insert(const_iterator, node_type&&)): Likewise.
	(set<>::erase(const_iterator)): Likewise.
	(set<>::erase(const_iterator, const_iterator)): Likewise.
	* include/debug/multiset.h
	(multiset<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
	(multiset<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(multiset<>::insert<>(value_type&&)): Likewise.
	(multiset<>::insert<>(const_iterator, value_type&&)): Likewise.
	(multiset<>::insert(node_type&&)): Likewise.
	(multiset<>::insert(const_iterator, node_type&&)): Likewise.
	(multiset<>::erase(const_iterator)): Likewise.
	(multiset<>::erase(const_iterator, const_iterator)): Likewise.

From-SVN: r264805

From-SVN: r264804

From-SVN: r264800

2018-10-02  Aaron Sawdey  <acsawdey@linux.ibm.com>

	PR target/87474
	* config/rs6000/rs6000-string.c (expand_strn_compare): Check that both
	P8_VECTOR and VSX are enabled.

From-SVN: r264799

    
    Reviewed-on: https://go-review.googlesource.com/138839

From-SVN: r264798

This adds the CPU model number of the IBM z14 Model ZR1 machine to
-march=native.  The patch doesn't actually change anything since we
anyway default to z14 for unknown CPU model numbers.  So this is just
for the sake of completeness.

2018-10-02  Andreas Krebbel  <krebbel@linux.ibm.com>

	* config/s390/driver-native.c (s390_host_detect_local_cpu): Add
	0x3907 as CPU model number.

From-SVN: r264797

This is a mechanical change not impacting code generation.  With that
patch I try to hide the artificial CPU name arch12 which we had to use
before the announcement of the IBM z14 machine.  arch12 of course
stays a valid option to -march and -mtune.  So this is just about
making the code somewhat easier to read.

gcc/ChangeLog:

2018-10-02  Andreas Krebbel  <krebbel@linux.ibm.com>

	* common/config/s390/s390-common.c: Rename PF_ARCH12 to PF_Z14.
	* config/s390/s390.h (enum processor_flags): Rename PF_ARCH12 to
	PF_Z14.  Rename TARGET_CPU_ARCH12 to TARGET_CPU_Z14,
	TARGET_CPU_ARCH12_P to TARGET_CPU_Z14_P, TARGET_ARCH12 to
	TARGET_Z14, and TARGET_ARCH12_P to TARGET_Z14_P.
	* config/s390/s390.md: Likewise. Rename also the cpu attribute
	value from arch12 to z14.

From-SVN: r264796

	* config/i386/i386.md (fxam<mode>2_i387_with_temp): Remove.
	(isinfxf2): Ditto.
	(isinf<mode>2): Ditto.

From-SVN: r264795

	* config/i386/i386.c (ix86_emit_i387_round): Extend op1 to XFmode
	before emitting fxam.  Perform calculations in XFmode.

From-SVN: r264794

    
    This reportedly happens on CentOS 5.11.  The real code will work fine;
    this test is assuming that the unexported slice function will handle
    the splice, but if pipe2 does not work then it doesn't.  The relevant
    code in internal/poll/splice_linux.go says "Falling back to pipe is
    possible, but prior to 2.6.29 splice returns -EAGAIN instead of 0 when
    the connection is closed."
    
    Reviewed-on: https://go-review.googlesource.com/138838

From-SVN: r264793

2018-10-02  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* match.pd (((X /[ex] A) +- B) * A): New transformation.

gcc/testsuite/
	* gcc.dg/tree-ssa/muldiv-1.c: New file.
	* gcc.dg/tree-ssa/muldiv-2.c: Likewise.

From-SVN: r264792

2018-10-02  Marc Glisse  <marc.glisse@inria.fr>

	PR libstdc++/87258
	* include/bits/stl_bvector.h (vector::begin(), vector::cbegin()):
	Rebuild _M_start with an explicit 0 offset.

From-SVN: r264791