2016-08-24  Aditya Kumar  <hiraditya@msn.com>

	* include/bits/algorithmfwd.h: Remove trailing whitespace.
	* include/bits/shared_ptr_base.h: Likewise.

From-SVN: r239731

re PR testsuite/77317 (x86_64 --target_board=''unix/ unix/-m32'' parallel testrun gives inconsistent results in gcc.dg/vect)

Fix PR testsuite/77317

gcc/testsuite/
	* lib/target-supports.exp
	(check_effective_target_vect_aligned_arrays): Don't cache the result.
	(check_effective_target_vect_natural_alignment): Ditto.
	(check_effective_target_vector_alignment_reachable): Ditto.
	(check_effective_target_vector_alignment_reachable_for_64bit): Ditto.

From-SVN: r239730

gcc/

	* config/arm/t-rtems: Add vfp multilib.

From-SVN: r239727

From-SVN: r239726

gcc/:
	* config/s390/s390.c (s390_asm_file_start): Call
	default_file_start.
gcc/testsuite/:
	* gcc.target/s390/nolrl-1.c: Don't match the file name.

From-SVN: r239713

rs6000.c (rs6000_expand_vector_init): Set initialization of all 0's to the 0 constant, instead of directly generating XOR.

[gcc]
2016-08-23  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (rs6000_expand_vector_init): Set
	initialization of all 0's to the 0 constant, instead of directly
	generating XOR.  Add support for V4SImode vector initialization on
	64-bit systems with direct move, and rework the ISA 3.0 V4SImode
	initialization.  Change variables used in V4SFmode vector
	intialization.  For V4SFmode vector splat on ISA 3.0, make sure
	any memory addresses are in index form.  Add support for using
	VSPLTH/VSPLTB to initialize vector short and vector char vectors
	with all of the same element.
	(regno_or_subregno): New helper function to return a register
	number for either REG or SUBREG.
	(rs6000_adjust_vec_address): Do not generate ADDI <reg>,R0,<num>.
	Use regno_or_subregno where possible.
	(rs6000_split_v4si_init_di_reg): New helper function to build up a
	DImode value from two SImode values in order to generate V4SImode
	vector initialization on 64-bit systems with direct move.
	(rs6000_split_v4si_init): Split up the insns for a V4SImode vector
	initialization.
	(rtx_is_swappable_p): V4SImode vector initialization insn is not
	swappable.
	* config/rs6000/rs6000-protos.h (rs6000_split_v4si_init): Add
	declaration.
	* config/rs6000/vsx.md (VSX_SPLAT_I): New mode iterators and
	attributes to initialize V8HImode and V16QImode vectors with the
	same element.
	(VSX_SPLAT_COUNT): Likewise.
	(VSX_SPLAT_SUFFIX): Likewise.
	(UNSPEC_VSX_VEC_INIT): New unspec.
	(vsx_concat_v2sf): Eliminate using 'preferred' register classes.
	Allow SFmode values to come from Altivec registers.
	(vsx_init_v4si): New insn/split for V4SImode vector initialization
	on 64-bit systems with direct move.
	(vsx_splat_<mode>, VSX_W iterator): Rework V4SImode and V4SFmode
	vector initializations, to allow V4SImode vector initializations
	on 64-bit systems with direct move.
	(vsx_splat_v4si): Likewise.
	(vsx_splat_v4si_di): Likewise.
	(vsx_splat_v4sf): Likewise.
	(vsx_splat_v4sf_internal): Likewise.
	(vsx_xxspltw_<mode>, VSX_W iterator): Eliminate using 'preferred'
	register classes.
	(vsx_xxspltw_<mode>_direct, VSX_W iterator): Likewise.
	(vsx_vsplt<VSX_SPLAT_SUFFIX>_di): New insns to support
	initializing V8HImode and V16QImode vectors with the same
	element.
	* config/rs6000/rs6000.h (TARGET_DIRECT_MOVE_64BIT): Disallow
	optimization if -maltivec=be.

[gcc/testsuite]
2016-08-23  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/vec-init-1.c: Add tests where the vector is
	being created from pointers to memory locations.
	* gcc.target/powerpc/vec-init-2.c: Likewise.

From-SVN: r239712

libcpp/ChangeLog:
	* include/line-map.h (source_range::from_locations): New method.

From-SVN: r239711

2016-08-23  Christophe Lyon  <christophe.lyon@linaro.org>

	* config/arm/arm.md (arm_movqi_insn): Swap predicable_short_it
	attribute for alternatives 3 and 4.

From-SVN: r239710

2016-08-23  Fritz Reese  <fritzoreese@gmail.com>

	gcc/fortran/
	* decl.c (gfc_match_structure_decl): Make gfc_structure_id static.

	gcc/testsuite/gfortran.dg/
	* dec_structure_12.f90: New testcase.

From-SVN: r239709

    
    Switch to a new method for determining the order in which import init
    functions are invoked: build an init fcn dependence DAG and walk the DAG
    to rewrite/adjust priorities to account for discrepancies introduced by
    "go test".
    
    This patch includes a change to the export data format generated
    by gccgo. Older versions of gccgo will not be able to read object files
    produced by a newer gccgo, but the new gcc will still be able to read
    old object files.
    
    Fixes golang/go#15738.
    
    Reviewed-on: https://go-review.googlesource.com/25301

From-SVN: r239708

gcc/ChangeLog:
	* selftest.c (selftest::assert_str_contains): New function.
	(selftest::test_assertions): Verify ASSERT_STR_CONTAINS.
	* selftest.h (selftest::assert_str_contains): New decl.
	(ASSERT_STR_CONTAINS): New macro.

From-SVN: r239707

2016-08-23  Fritz Reese  <fritzoreese@gmail.com>

	gcc/fortran/
	* interface.c (compare_components): Fix typo in name check conditional.

From-SVN: r239706

	* include/debug/array (array): Add _GLIBCXX17_CONSTEXPR.
	* include/profile/array (array): Likewise.
	(array::swap): Fix exception specification for zero-sized arrays.

From-SVN: r239705

2016-08-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77286
	* tree-vect-loop.c (vect_analyze_loop_form_1): Do not modify
	the CFG here.
	(vect_transform_loop): Split exit edges of loop and scalar
	loop if required and at the appropriate time.

From-SVN: r239700

	PR libstdc++/77334
	* include/bits/stl_tree.h (_Rb_tree::_M_move_assign): New functions.
	(_Rb_tree::operator=(_Rb_tree&&)): Dispatch to _M_move_assign.
	* testsuite/23_containers/map/77334.cc: New test.

From-SVN: r239698

	* doc/xml/manual/using.xml: Remove reference to -pthreads option.
	* doc/html/*: Regenerate.

From-SVN: r239693

	* testsuite/experimental/feat-cxx14.cc: Only preprocess, not compile.
	* testsuite/experimental/feat-lib-fund.cc: Likewise.

From-SVN: r239692

	PR libstdc++/71771
	* include/bits/stl_iterator.h
	(operator-(reverse_iterator<Iter>, reverse_iterator<Iter>): Only
	define for C++98 mode.
	(operator-(move_iterator<Iter>, move_iterator<Iter>): Don't define.
	* testsuite/24_iterators/headers/iterator/synopsis.cc: Use
	-std=gnu++98.
	* testsuite/24_iterators/headers/iterator/synopsis_c++11.cc: New test.
	* testsuite/24_iterators/headers/iterator/synopsis_c++14.cc: New test.
	* testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: New test.
	* testsuite/24_iterators/move_iterator/greedy_ops.cc: Don't test
	difference operator.
	* testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Only test
	difference operator for C++98.
	* testsuite/24_iterators/reverse_iterator/71771.cc: New test.

From-SVN: r239691

	* include/bits/c++config (_GLIBCXX17_CONSTEXPR): Define.
	* include/bits/range_access.h (begin, end, rbegin, rend, crbegin)
	(crend): Add _GLIBCXX17_CONSTEXPR as per P0031R0.
	* include/bits/stl_iterator.h (reverse_iterator, move_iterator)
	(__make_reverse_iterator, make_reverse_iterator, make_move_iterator):
	Likewise.
	* include/bits/stl_iterator_base_funcs.h (__distance, __advance): Add
	_GLIBCXX14_CONSTEXPR.
	(distance, advance, next, prev): Add _GLIBCXX17_CONSTEXPR.
	* include/std/array (array::begin, array::end, array::rbegin)
	(array::rend, array::cbegin, array:cend, array::crbegin)
	(array::crend, array::operator[], array::at, array::front)
	(array::back, array::data): Likewise.
	* testsuite/24_iterators/headers/iterator/range_access.cc: Replace
	with separate tests for C++11, C++14, and C++17.
	* testsuite/24_iterators/headers/iterator/range_access_c++11.cc: New.
	* testsuite/24_iterators/headers/iterator/range_access_c++14.cc: New.
	* testsuite/24_iterators/headers/iterator/range_access_c++17.cc: New.

From-SVN: r239690

* get_dynamic_stack_size is passed a SIZE of a data block (which is
  allocated elsewhere), the SIZE_ALIGN of the SIZE (i.e. the alignment
  of the underlying memory units (e.g. 32 bytes split into 4 times 8
  bytes = 64 bit alignment) and the REQUIRED_ALIGN of the data portion
  of the allocated memory.

* Assuming the function is called with SIZE = 2, SIZE_ALIGN = 8 and
  REQUIRED_ALIGN = 64 it first adds 7 bytes to SIZE -> 9.  This is
  what is needed to have two bytes 8-byte-aligned at some memory
  location without any known alignment.

* Finally round_push is called to round up SIZE to a multiple of the
  stack slot size.

The key to understanding this is that the function assumes that
STACK_DYNMAIC_OFFSET is completely unknown at the time its called
and therefore it does not make assumptions about the alignment of
STACKPOINTER + STACK_DYNMAIC_OFFSET.  The latest patch simply
hard-codes that SP + SDO is supposed to be aligned to at least
stack slot size (and does that in a very complicated way).  Since
there is no guarantee that this is the case on all targets, the
patch is broken.  It may miscalculate a SIZE that is too small in
some cases.

However, on many targets there is some guarantee about the
alignment of SP + SDO even if the actual value of SDO is unknown.
On s390x it's always 8-byte-aligned (stack slot size).  So the
right fix should be to add knowledge about the target's guaranteed
alignment of SP + SDO to the function.  I'm right now testing a
much simpler patch that uses
REGNO_POINTER_ALIGN(VIRTUAL_STACK_DYNAMIC_REGNUM) as the
alignment.


gcc/ChangeLog:

2016-08-23  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* explow.c (get_dynamic_stack_size): Take known alignment of stack
	pointer + STACK_DYNAMIC_OFFSET into account when calculating the
	size needed.  Correct a typo in a comment.

From-SVN: r239688

gcc/testsuite/ChangeLog:

2016-08-23  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* gcc.target/s390/insv-1.c: Fix test when running with -m31.

From-SVN: r239687

THe attached patch improves checking of teh results of the subtests
"a" and "f".  As they share the same "vone" instruction, the duplicate
scan-assembler-times was bogus.  Moved "f" to a separate function to
fix this.  Also double check that no extra "vgmf" instructions are
used.

gcc/testsuite/ChangeLog:

2016-08-23  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* gcc.target/s390/zvector/vec-genmask-1.c: Improve result
	verification.

From-SVN: r239686

Split ~b & a to (b & a) ^ a.  This is benefitial on z Systems since we
otherwise need a big -1 constant to be loaded for the ~b.
	
gcc/ChangeLog:

2016-08-23  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* config/s390/s390.md ("*andc_split"): New splitter for and with
	complement.

gcc/testsuite/ChangeLog:

2016-08-23  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* gcc.target/s390/md/andc-splitter-1.c: New test case.
	* gcc.target/s390/md/andc-splitter-2.c: Likewise.

From-SVN: r239685

2016-08-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/27336
	* tree-vrp.c (infer_value_range): Handle stmts that can throw
	by looking for a non-EH edge.
	(process_assert_insertions_for): Likewise.

	* c-c++-common/pr27336.c: New testcase.

From-SVN: r239684

2016-08-23  Richard Biener  <rguenther@suse.de>

	PR middle-end/77305
	* statistics.c (statistics_counter_event): Robustify against
	NULL current_pass.

From-SVN: r239683

	* config/i386/i386.c (processor_alias_table): Enable PTA_PRFCHW
	for targets amdfam10 and barcelona.

From-SVN: r239682

From-SVN: r239680

	PR c++/77321
	* c-common.c (warn_for_memset): Check type for null.

	* g++.dg/cpp1y/pr77321.C: New test.

From-SVN: r239676

    
    When lowering method expressions of the form "P.M" where
    P is a pointer type (e.g. "type P *T") make sure we examine
    the method set of P and not T during method lookup.
    
    Fixes golang/go#15722.
    
    Reviewed-on: https://go-review.googlesource.com/24843

From-SVN: r239675

	* regex_executor.h(_M_handle_repeat, _M_handle_subexpr_begin)
	(_M_handle_subexpr_end, _M_handle_line_begin_assertion)
	(_M_handle_line_end_assertion, _M_handle_word_boundary)
	(_M_handle_subexpr_lookahead, _M_handle_match)
	(_M_handle_backref, _M_handle_accept, _M_handle_alternative):
	Add separate function declarations.
	* regex_executor.tcc: Split _M_dfs() into multiple handler functions.

From-SVN: r239673

	* config/i386/i386.md (*zero_extendsidi2): Add (*r,*k) alternative.
	(zero_extend<mode>di2): Ditto.
	(*zero_extend<mode>si2): Ditto.
	(*zero_extendqihi2): Ditto.

From-SVN: r239672

2016-08-22  Steven G. Kargl  <kargl@gcc.gnu.org>
	    Bud Davis  <jmdavis@link.com>

	PR fortran/60774
	* parse.c (next_free,next_fixed): Issue error for statement label
	without a statement.

2016-08-22  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/60774
	* gfortran.dg/empty_label.f: Adjust test for new error message.
	* gfortran.dg/empty_label.f90: Ditto.
	* gfortran.dg/empty_label_typedecl.f90: Ditto.
	* gfortran.dg/label_3.f90: Deleted (redundant with empty_label.f90).
	* gfortran.dg/warnings_are_errors_1.f90: Remove invalid statement label.

Co-Authored-By: Bud Davis <jmdavis@link.com>

From-SVN: r239668

re PR fortran/61318 (Improve error diagnostic by pointing to the expression and not to declared-at of a USE-associated variable)

2016-08-22  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/61318
	* interface.c (compare_parameter): Use better locus for error message.

2016-08-22  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/61318
	* gfortran.dg/pr61318.f90: New test.

From-SVN: r239667

2016-08-22  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77260
	* gcc/fortran/trans-decl.c (generate_local_decl): Suppress warning
	for unused variable if symbol is entry point.

2016-08-22  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77260
	* gfortran.dg/pr77260_1.f90: New test.
	* gfortran.dg/pr77260_2.f90: Ditto.

From-SVN: r239666

The __builtin_isinf_sign folding uses a type-specific signbit built-in
function, meaning it only works for the types float, double and long
double, not for types such as _FloatN, _FloatNx, __float128.  Since
the signbit built-in function is now type-generic, that can be used
unconditionally, much as the code uses the type-generic isinf built-in
function unconditionally, and this patch makes it do so, thereby
enabling __builtin_isinf_sign (which glibc uses to expand the isinf
macro since that macro in glibc traditionally provided the stronger
guarantees about the return value given by __builtin_isinf_sign) to
work for all floating-point types.

The test gcc.dg/torture/builtin-isinf_sign-1.c needs updating because
it tests that comparisons of calls to __builtin_isinf_sign to
conditional expressions involving __builtin_isinf and
__builtin_signbit* get optimized away, and with a change of what
particular built-in function for signbit is used, GCC doesn't notice
the expressions with type-generic and non-type-generic built-in
functions are equivalent at -O0 or -O1 (it does optimize away the
original test at -O2).

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

	PR middle-end/77269
gcc:
	* builtins.c (fold_builtin_classify): Use builtin_decl_explicit
	(BUILT_IN_SIGNBIT) to expand __builtin_isinf_sign.

gcc/testsuite:
	* gcc.dg/torture/builtin-isinf_sign-1.c: Use __builtin_signbit not
	__builtin_signbitf and __builtin_signbitl in expected generic
	expansion.
	* gcc.dg/torture/float128-tg-2.c, gcc.dg/torture/float128x-tg-2.c,
	gcc.dg/torture/float16-tg-2.c, gcc.dg/torture/float32-tg-2.c,
	gcc.dg/torture/float32x-tg-2.c, gcc.dg/torture/float64-tg-2.c,
	gcc.dg/torture/float64x-tg-2.c, gcc.dg/torture/floatn-tg-2.h: New
	tests.

From-SVN: r239665

2016-08-22  Gleb Natapov  <gleb@scylladb.com>

	PR libstdc++/68297
	* config/abi/pre/gnu-versioned-namespace.ver: Export
	__cxa_init_primary_exception and std::exception_ptr(void*).
	* config/abi/pre/gnu.ver (CXXABI_1.3.11) : Add new symbol version and
	export __cxa_init_primary_exception and std::exception_ptr(void*).
	* include/Makefile.am: Add new headers.
	* include/Makefile.in: Regenerate.
	* libsupc++/Makefile.am: Add new headers.
	* libsupc++/Makefile.in: Regenerate.
	* libsupc++/cxxabi.h (__cxa_allocate_exception): Move to ...
	* libsupc++/cxxabi_init_exception.h: New header.
	(__cxa_init_primary_exception): Declare.
	* libsupc++/eh_throw.cc (__cxa_init_primary_exception): Define.
	(__cxa_throw): Use __cxa_init_primary_exception.
	* libsupc++/exception (std::exception): Move to ...
	* libsupc++/exception.h: New header.
	* libsupc++/exception_ptr.h (__exception_ptr::exception_ptr): Add
	friend declaration.
	(__exception_ptr::__dest_thunk): New function template.
	(std::make_exception_ptr) [__cpp_rtti && !_GLIBCXX_HAVE_CDTOR_CALLABI]:
	Use __cxa_allocate_exception and __cxa_init_primary_exception to
	create exception_ptr.
	* libsupc++/typeinfo: Include bits/exception.h instead of exception.
	* testsuite/util/testsuite_abi.cc: Add CXXABI_1.3.11 version.

From-SVN: r239664

	* doc/xml/api.xml: Replace hardcoded links for specific versions with
	link to docs for all releases.
	* doc/html/*: Regenerate.

From-SVN: r239663

	PR libstdc++/77322
	* doc/xml/manual/intro.xml: Document DR 2062 change.
	* include/std/functional (function::swap): Add noexcept.
	(swap(function<Res(Args...)&, function<Res(Args...)&)): Likewise.
	* testsuite/20_util/function/77322.cc: New test.

From-SVN: r239662

gcc/ChangeLog:

	* print-tree.c (print_node) [VECTOR_CST]: Coalesce the output of
	identical consecutive elements.
	[SSA_NAME]: Print the name's def stmt on its own line.  When printing
	the node's def stmt, avoid printing an unwanted trailing newline by
	replacing the call to print_gimple_stmt() with its inlined body and
	adjusting it to not set pp_needs_newline and to call pp_flush()
	instead of pp_newline_and_flush().

From-SVN: r239661

This patch adds a minimal set of built-in functions for the new
_FloatN and _FloatNx types.

The functions added are __builtin_fabs*, __builtin_copysign*,
__builtin_huge_val*, __builtin_inf*, __builtin_nan* and
__builtin_nans* (where * = fN or fNx).  That is, 42 new entries are
added to the enum of built-in functions and the associated array of
decls, where not all of them are actually supported on any one target.

These functions are believed to be sufficient for libgcc (complex
multiplication and division use __builtin_huge_val*,
__builtin_copysign* and __builtin_fabs*) and for glibc (which also
depends on complex multiplication from libgcc, as well as using such
functions itself).  The basic target-independent support for folding /
expanding calls to these built-in functions is wired up, so those for
constants can be used in static initializers, and the fabs and
copysign built-ins can always be expanded to bit-manipulation inline
(for any format setting signbit_ro and signbit_rw, which covers all
formats supported for _FloatN and _FloatNx), although insn patterns
for fabs (abs<mode>2) and copysign (copysign<mode>3) will be used when
available and may result in more optimal code.

The complex multiplication and division functions in libgcc rely on
predefined macros (defined with -fbuilding-libgcc) to say what the
built-in function suffixes to use with a particular mode are.  This
patch updates that code accordingly, where previously it involved a
hack supposing that machine-specific suffixes for constants were also
suffixes for built-in functions.

As with the main _FloatN / _FloatNx patch, this patch does not update
code dealing only with optimizations that currently has cases only
covering float, double and long double, though some such cases are
straightforward and may be covered in a followup patch.

The functions are defined with DEF_GCC_BUILTIN, so calls to the TS
18661-3 functions such as fabsf128 and copysignf128, without the
__builtin_, will not be optimized.  As noted in the original _FloatN /
_FloatNx patch submission, in principle the bulk of the libm functions
that have built-in versions should have those versions extended to
cover the new types, but that would require more consideration of the
effects of increasing the size of the enum and initializing many more
functions at startup.

I don't know whether target-specific built-in functions can readily be
made into aliases for target-independent functions, but if they can,
it would make sense to do so for the x86, ia64 and rs6000 *q functions
corresponding to these, so that they can benefit from the
architecture-independent folding logic and from any optimizations
enabled for these functions in future, and so that less
target-specific code is needed to support them.

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

gcc:
	* tree.h (CASE_FLT_FN_FLOATN_NX, float16_type_node)
	(float32_type_node, float64_type_node, float32x_type_node)
	(float128x_type_node): New macros.
	* builtin-types.def (BT_FLOAT16, BT_FLOAT32, BT_FLOAT64)
	(BT_FLOAT128, BT_FLOAT32X, BT_FLOAT64X, BT_FLOAT128X)
	(BT_FN_FLOAT16, BT_FN_FLOAT32, BT_FN_FLOAT64, BT_FN_FLOAT128)
	(BT_FN_FLOAT32X, BT_FN_FLOAT64X, BT_FN_FLOAT128X)
	(BT_FN_FLOAT16_FLOAT16, BT_FN_FLOAT32_FLOAT32)
	(BT_FN_FLOAT64_FLOAT64, BT_FN_FLOAT128_FLOAT128)
	(BT_FN_FLOAT32X_FLOAT32X, BT_FN_FLOAT64X_FLOAT64X)
	(BT_FN_FLOAT128X_FLOAT128X, BT_FN_FLOAT16_CONST_STRING)
	(BT_FN_FLOAT32_CONST_STRING, BT_FN_FLOAT64_CONST_STRING)
	(BT_FN_FLOAT128_CONST_STRING, BT_FN_FLOAT32X_CONST_STRING)
	(BT_FN_FLOAT64X_CONST_STRING, BT_FN_FLOAT128X_CONST_STRING)
	(BT_FN_FLOAT16_FLOAT16_FLOAT16, BT_FN_FLOAT32_FLOAT32_FLOAT32)
	(BT_FN_FLOAT64_FLOAT64_FLOAT64, BT_FN_FLOAT128_FLOAT128_FLOAT128)
	(BT_FN_FLOAT32X_FLOAT32X_FLOAT32X)
	(BT_FN_FLOAT64X_FLOAT64X_FLOAT64X)
	(BT_FN_FLOAT128X_FLOAT128X_FLOAT128X): New type definitions.
	* builtins.def (DEF_GCC_FLOATN_NX_BUILTINS): New macro.
	(copysign, fabs, huge_val, inf, nan, nans): Use it.
	* builtins.c (expand_builtin): Use CASE_FLT_FN_FLOATN_NX for fabs
	and copysign.
	(fold_builtin_0): Use CASE_FLT_FN_FLOATN_NX for inf and huge_val.
	(fold_builtin_1): Use CASE_FLT_FN_FLOATN_NX for fabs.
	* doc/extend.texi (Other Builtins): Document these built-in
	functions.
	* fold-const-call.c (fold_const_call): Use CASE_FLT_FN_FLOATN_NX
	for nan and nans.

gcc/c-family:
	* c-family/c-cppbuiltin.c (c_cpp_builtins): Check _FloatN and
	_FloatNx types for suffixes for built-in functions.

gcc/testsuite:
	* gcc.dg/torture/float128-builtin.c,
	gcc.dg/torture/float128-ieee-nan.c,
	gcc.dg/torture/float128x-builtin.c,
	gcc.dg/torture/float128x-nan.c, gcc.dg/torture/float16-builtin.c,
	gcc.dg/torture/float16-nan.c, gcc.dg/torture/float32-builtin.c,
	gcc.dg/torture/float32-nan.c, gcc.dg/torture/float32x-builtin.c,
	gcc.dg/torture/float32x-nan.c, gcc.dg/torture/float64-builtin.c,
	gcc.dg/torture/float64-nan.c, gcc.dg/torture/float64x-builtin.c,
	gcc.dg/torture/float64x-nan.c, gcc.dg/torture/floatn-builtin.h,
	gcc.dg/torture/floatn-nan.h: New tests.

From-SVN: r239658