* hash-table.h (hash_table): Add Lazy template parameter defaulted
	to false, if true, don't alloc_entries during construction, but defer
	it to the first method that needs m_entries allocated.
	(hash_table::hash_table, hash_table::~hash_table,
	hash_table::alloc_entries, hash_table::find_empty_slot_for_expand,
	hash_table::too_empty_p, hash_table::expand, hash_table::empty_slow,
	hash_table::clear_slot, hash_table::traverse_noresize,
	hash_table::traverse, hash_table::iterator::slide): Adjust all methods.
	* hash-set.h (hash_set): Add Lazy template parameter defaulted to
	false.
	(hash_set::contains): If Lazy is true, use find_slot_with_hash with
	NO_INSERT instead of find_with_hash.
	(hash_set::traverse, hash_set::iterator, hash_set::iterator::m_iter,
	hash_set::m_table): Add Lazy to template params of hash_table.
	(gt_ggc_mx, gt_pch_nx): Use false as Lazy in hash_set template param.
	* attribs.c (test_attribute_exclusions): Likewise.
	* hash-set-tests.c (test_set_of_strings): Add iterator tests for
	hash_set.  Add tests for hash_set with Lazy = true.
c-family/
	* c-common.c (per_file_includes_t): Use false as Lazy in hash_set
	template param.
jit/
	* jit-recording.c (reproducer::m_set_identifiers): Use false as Lazy
	in hash_set template param.

From-SVN: r269859

[PR72741] Properly handle clauses specifying the level of parallelism for 'external' Fortran OpenACC routines

..., so as to also for these enable the generic middle end OMP code to verify
proper nesting of loops/routines regarding their levels of parallelism.

	gcc/fortran/
	PR fortran/72741
	* openmp.c (gfc_match_oacc_routine): Set the level of parallelism
	for all variants.
	(gfc_resolve_oacc_routines): Call gfc_add_omp_declare_target.
	gcc/testsuite/
	PR fortran/72741
	* c-c++-common/goacc/routine-3-extern.c: New file.
	* c-c++-common/goacc/routine-3.c: Adjust.
	* c-c++-common/goacc/routine-4-extern.c: New file.
	* c-c++-common/goacc/routine-4.c: Adjust.
	* gfortran.dg/goacc/routine-module-3.f90: New file.
	* gfortran.dg/goacc/routine-external-level-of-parallelism-1.f: New
	file.
	* gfortran.dg/goacc/routine-external-level-of-parallelism-2.f:
	Likewise.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>

From-SVN: r269858

	gcc/fortran/
	PR fortran/89773
	* gfortran.h (gfc_oacc_routine_name): Add loc member.
	(gfc_resolve_oacc_routines): Declare.
	* openmp.c (gfc_match_oacc_routine): Move some error checking
	into...
	(gfc_resolve_oacc_routines): ... this new function.
	* resolve.c (resolve_codes): Call it.
	gcc/testsuite/
	PR fortran/89773
	* gfortran.dg/goacc/pr89773.f90: New file.
	* gfortran.dg/goacc/pr77765.f90: Adjust.
	* gfortran.dg/goacc/routine-6.f90: Adjust, and extend.

From-SVN: r269857

[PR72741] The name in a Fortran OpenACC 'routine' directive refers to the containing subroutine or function

	gcc/fortran/
	PR fortran/72741
	* openmp.c (gfc_match_oacc_routine): Clarify.
	gcc/testsuite/
	PR fortran/72741
	* gfortran.dg/goacc/routine-module-mod-1.f90: Update.

From-SVN: r269856

If 'use'ing with an old GCC a new module file (with OpenACC 'routine'
directive's level of parallelism encoded), then that expectedly fails as
follows:

    f951: Fatal Error: Reading module 'routine_module_mod_1' at line 27 column 21: find_enum(): Enum not found

If 'use'ing with a new GCC an old module file (without OpenACC 'routine'
directive's level of parallelism encoded), then that (silently) continues to
accept the module file, and will proceed with the previous, erroneous behavior.

These seem to be acceptable compromises, instead of incrementing 'MOD_VERSION'.

	gcc/fortran/
	PR fortran/72741
	* module.c (verify_OACC_ROUTINE_LOP_NONE): New function.
	(enum ab_attribute): Add AB_OACC_ROUTINE_LOP_GANG,
	AB_OACC_ROUTINE_LOP_WORKER, AB_OACC_ROUTINE_LOP_VECTOR,
	AB_OACC_ROUTINE_LOP_SEQ.
	(attr_bits): Add these.
	(mio_symbol_attribute): Handle these.
	gcc/testsuite/
	PR fortran/72741
	* gfortran.dg/goacc/routine-module-1.f90: New file.
	* gfortran.dg/goacc/routine-module-2.f90: Likewise.
	* gfortran.dg/goacc/routine-module-mod-1.f90: Likewise.

From-SVN: r269855

..., as yet another copy from 'gfortran.dg/dg.exp', which there are a few
already.

	gcc/testsuite/
	* gfortran.dg/goacc/goacc.exp (dg-compile-aux-modules): New proc.

From-SVN: r269854

	gcc/testsuite/
	PR fortran/56408
	* gcc.target/powerpc/ppc-fortran/ppc-fortran.exp
	(dg-compile-aux-modules): Fix diagnostic.
	* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Likewise.
	* gfortran.dg/dg.exp (dg-compile-aux-modules): Likewise.

From-SVN: r269851

[testsuite, Fortran] Apply DejaGnu 1.4.4 work-around also to 'gfortran.dg/coarray/caf.exp:dg-compile-aux-modules'

See trunk r215293.  This unifies all 'dg-compile-aux-modules' instances.

	gcc/testsuite/
	PR fortran/56408
	* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Workaround
	missing nexted dg-test call support in dejaGNU 1.4.4.

From-SVN: r269848

In the same 'runtest' instance, 'global' variables persist from one '*.exp'
file to another.

All other '*.exp' files are using " -pedantic-errors" instead of the empty
string as the default for 'DEFAULT_FFLAGS'.  Thus this setting of
'DEFAULT_FFLAGS' is not idempotent, depends on whether
'gfortran.dg/ieee/ieee.exp', or an other defining '*.exp' file is executed
first.

	gcc/testsuite/
	PR fortran/29383
	* gfortran.dg/ieee/ieee.exp (DEFAULT_FFLAGS): Set the same as in
	other '*.exp' files.

From-SVN: r269845

    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/168408

From-SVN: r269841

re PR middle-end/89779 (internal compiler error: tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in tree_nop_conversion_p, at tree.c:12798)

2019-03-21  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/89779
	* tree.c (tree_nop_conversion): Consolidate and fix defensive
	checks with respect to released SSA names now having error_mark_node
	type.
	* fold-const.c (operand_equal_p): Likewise.

	* gcc.dg/torture/pr89779.c: New testcase.

From-SVN: r269838

IS 29124 8.2 [sf.mathh] says that <math.h> should add the names of the
special functions to the global namespace.  However, C++17 Annex D
[depr.c.headers] excludes those functions explicitly, so they should not
be placed in the global namespace unconditionally for C++17.

Only add them to the global namespace when IS 29124 is explicitly
requested via the __STDCPP_WANT_MATH_SPEC_FUNCS__ macro.

	* include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
	(assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
	(assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
	(comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
	(comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
	(cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
	(cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
	(cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
	(ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
	(ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
	(hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
	(legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
	(sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
	(sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
	when the special functions IS is enabled, not for C++17.
	* testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
	Replace with ...
	* testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
	without checks for special functions in C++17.
	* testsuite/26_numerics/headers/cmath/special_functions_global.cc:
	New test.

From-SVN: r269837

These headers were missed in the previous commit for this bug.

There are also several "" includes in the profile mode headers, but
because they're deprecated I'm not fixing them.

	* include/backward/hash_map: Use <> for includes not "".
	* include/backward/hash_set: Likewise.
	* include/backward/strstream: Likewise.
	* include/tr1/bessel_function.tcc: Likewise.
	* include/tr1/exp_integral.tcc: Likewise.
	* include/tr1/legendre_function.tcc: Likewise.
	* include/tr1/modified_bessel_func.tcc: Likewise.
	* include/tr1/riemann_zeta.tcc: Likewise.

From-SVN: r269835

2019-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/78645
	* g++.dg/cpp0x/constexpr-ice20.C: New.

From-SVN: r269834

/cp
2019-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/89571
	* method.c (after_nsdmi_defaulted_late_checks): Avoid passing
	error_mark_node to comp_except_specs.

/testsuite
2019-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/89571
	* g++.dg/cpp0x/noexcept37.C: New.

From-SVN: r269832

From-SVN: r269831

In functions whose return type is instantiated from a nested template,
make sure that all members of the instance are emitted before finishing
the outer function, otherwise they will be removed during the
prune_unused_types pass.

gcc/d/ChangeLog:

2019-03-21  Iain Buclaw  <ibuclaw@gdcproject.org>

	PR d/89017
	* d-codegen.cc (d_decl_context): Skip over template instances when
	finding the context.
	* decl.cc (DeclVisitor::visit(TemplateDeclaration)): New override.
	(build_type_decl): Include parameters in name of template types.

gcc/testsuite/ChangeLog:

2019-03-21  Iain Buclaw  <ibuclaw@gdcproject.org>

	PR d/89017
	* gdc.dg/pr89017.d: New test.

From-SVN: r269828

fix PR 71861

2019-03-20  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/71861
	* symbol.c (check_conflict): ABSTRACT attribute conflicts with
	INTRINSIC attribute.

2019-03-20  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/71861
	* gfortran.dg/interface_abstract_5.f90: New test case.

From-SVN: r269827

The issue here is that declval<T>().d is considered instantiation-dependent
within a template, as the access to 'd' might depend on the particular
specialization.  But when we're deducing template arguments for a call, we
know that the call and the arguments are non-dependent, so we can do the
substitution as though we aren't in a template.  Which strictly speaking we
aren't, since the default argument is considered a separate definition.

	* pt.c (type_unification_real): Accept a dependent result in
	template context.

From-SVN: r269826

Even if a global register is being clobbered in a function we usually
do not save and restore it. However, we still have to do this if it is
a special register. Most of the places in the backend handle this
correctly but not the prologue/epilogue optimization.

gcc/ChangeLog:

2019-03-20  Andreas Krebbel  <krebbel@linux.ibm.com>

	PR target/89775
	* config/s390/s390.c (global_not_special_regno_p): Move to make it
	available to ...
	(s390_optimize_register_info): Use global_not_special_regno_p to
	check for global regs.

2019-03-20  Jakub Jelinek  <jakub@redhat.com>

	PR target/89775
	* gcc.target/s390/pr89775-1.c: New test.
	* gcc.target/s390/pr89775-2.c: New test.

From-SVN: r269823

	PR target/89752
	* lra-constraints.c (process_alt_operands) <reg>: For BLKmode, don't
	update this_alternative nor this_alternative_set.

	* g++.target/aarch64/aarch64.exp: New file.
	* g++.target/aarch64/pr89752.C: New test.

From-SVN: r269819

From-SVN: r269817

gcc/c/ChangeLog:

	PR tree-optimization/89688
	* c-decl.c (finish_decl): Call braced_lists_to_string for more
	kinds of initializers.

gcc/c-family/ChangeLog:

	PR tree-optimization/89688
	* c-common.c (braced_list_to_string): Make static.
	(braced_lists_to_strings): Define new function.
	* c-common.h (braced_list_to_string): Remove.
	(braced_lists_to_strings): Declare.

gcc/cp/ChangeLog:

	PR tree-optimization/89688
	* typeck2.c (store_init_value): Call braced_lists_to_string for more
	kinds of initializers.

gcc/testsuite/ChangeLog:

	PR tree-optimization/89688
	* gcc.dg/strlenopt-61.c: New test.
	* g++.dg/warn/Wstringop-overflow-2.C: New test.

From-SVN: r269814

	gcc/
	PR target/89411
	* config/riscv/riscv.c (riscv_valid_lo_sum_p): New arg x.  New locals
	align, size, offset.  Use them to handle a BLKmode reference.  Update
	comment.
	(riscv_classify_address): Pass info->offset to riscv_valid_lo_sum_p.

	gcc/testsuite/
	PR target/89411
	* gcc.target/riscv/losum-overflow.c: New test.

From-SVN: r269813

	PR rtl-optimization/89768
	* loop-unroll.c (unroll_loop_constant_iterations): Use gen_int_mode
	instead of GEN_INT.
	(unroll_loop_runtime_iterations): Likewise.

From-SVN: r269812

    
    In the C calling convention, on AMD64, and probably a number of
    other architectures, a 3-word struct argument is passed on stack.
    This is less efficient than passing in three registers. Further,
    this may affect the code generation in other part of the program,
    even if the function is not actually called.
    
    Slices are common in Go and append is a common slice operation,
    which calls growslice in the growing path. To improve the code
    generation, pass the slice header's three fields as separate
    values, instead of a struct, to growslice.
    
    The drawback is that this makes the runtime implementation
    slightly diverges from the gc runtime.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/168277

From-SVN: r269811

gcc/ChangeLog:
	* tree-ssa-strlen.c (handle_builtin_stxncpy): Use full_string_p
	rather than endptr as an indicator of nul-termination.

From-SVN: r269809

gcc/ChangeLog:

	PR tree-optimization/89644
	* tree-ssa-strlen.c (handle_builtin_stxncpy): Consider unterminated
	arrays in determining sequence sizes in strncpy and stpncpy.

gcc/testsuite/ChangeLog:

	PR tree-optimization/89644
	* gcc.dg/Wstringop-truncation-8.c: New test.

From-SVN: r269807

2019-03-19  Martin Liska  <mliska@suse.cz>

	PR middle-end/89737
	* predict.c (combine_predictions_for_bb): Empty likely_edges and
	unlikely_edges if there's an edge that belongs to both these sets.
2019-03-19  Martin Liska  <mliska@suse.cz>

	PR middle-end/89737
	* gcc.dg/pr89737.c: New test.

From-SVN: r269804

The "classic" PowerPCs (6xx/7xx) are not STRICT_ALIGNMENT, but their
floating point units are.  This is not normally a problem, the ABIs
make everything FP aligned.  The RTL patterns converting FP to integer
however get a potentially unaligned destination, and we do not want to
do an stfiwx on that on such older CPUs.

This fixes it.  It does not change anything for TARGET_MFCRF targets
(POWER4 and later).  It also won't change anything for strict-alignment
targets, or CPUs without hardware FP of course, or CPUs that do not
implement stfiwx (older 4xx/5xx/8xx).

It does not change the corresponding fixuns* pattern, because that can
not be enabled on any CPU that cannot handle unaligned FP well.


	PR target/89746
	* config/rs6000/rs6000.md (fix_trunc<mode>si2_stfiwx): If we have a
	non-TARGET_MFCRF target, and the dest is memory but not 32-bit aligned,
	go via a stack temporary.

From-SVN: r269802

	PR target/89378
	* config/mips/mips.c (mips_expand_vec_cond_expr): Use gen_lowpart
	instead of gen_rtx_SUBREG.
	* config/mips/mips-msa.md (vec_extract<mode><unitmode>): Likewise.

From-SVN: r269801

2019-03-19  Richard Biener  <rguenther@suse.de>

	PR debug/88389
	* opts.c (finish_options): Disable -gsplit-dwarf when doing LTO.

From-SVN: r269800

re PR lto/87089 (tree check: expected class 'type', have 'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h)


	PR lto/87809
	PR lto/89335
	* tree.c (free_lang_data_in_decl): Do not free context of C++
	destrutors.

	* g++.dg/lto/pr87089_0.C: New testcase.
	* g++.dg/lto/pr87089_1.C: New testcase.
	* g++.dg/lto/pr89335_0.C: New testcase.

From-SVN: r269799

    
    Since aix/ppc64 has been added to GC toolchain, a mix between new and
    old files were created in gcc toolchain.
    This commit corrects this merge for aix/ppc64 and aix/ppc.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/167658

From-SVN: r269797

gcc/testsuite/ChangeLog:

2019-03-19  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	PR target/89736
	* gcc.target/powerpc/pr87532-mc.c: Modify dejagnu directives to
	restrict this test to vsx targets.

From-SVN: r269796

	PR target/89506
	* config/arm/arm.md (cmpsi2_addneg): Swap the alternatives and use
	subs for the first alternative except when operands[3] is 1.

From-SVN: r269795

	* doc/xml/manual/allocator.xml: Link to table documenting evolution
	of extension allocators.
	* doc/xml/manual/evolution.xml: Use angle brackets for header names.
	Document new headers in 7.2, 8.1 and 9.1 releases.
	* doc/xml/manual/using.xml: Adjust link target for new_allocator.
	* doc/html/*: Regenerate.

From-SVN: r269794

	PR target/89752
	* gimplify.c (gimplify_asm_expr): For output argument with
	TREE_ADDRESSABLE type, clear allows_reg if it allows memory, otherwise
	diagnose error.

	* g++.dg/ext/asm15.C: Check for particular diagnostic wording.
	* g++.dg/ext/asm16.C: Likewise.
	* g++.dg/ext/asm17.C: New test.

From-SVN: r269793

	PR rtl-optimization/89753
	* loop-unroll.c (decide_unroll_constant_iterations): Make guard for
	explicit unrolling factor even more robust.

From-SVN: r269791

	PR target/89726
	* config/i386/i386.c (ix86_expand_floorceildf_32): In ceil
	compensation use x2 += 1 instead of x2 -= -1 and when honoring
	signed zeros, do another copysign after the compensation.

	* gcc.target/i386/fpprec-1.c (x): Add 6 new constants.
	(expect_round, expect_rint, expect_floor, expect_ceil, expect_trunc):
	Add expected results for them.

From-SVN: r269790