2015-11-18  Arnaud Charlet  <charlet@adacore.com>

	* interfac.ads (Unsigned_24): New type.
	* sem_ch13.adb (Validate_Unchecked_Conversion): Disable error on
	unconstrained arrays in Relaxed_RM_Semantics mode.

2015-11-18  Vincent Celier  <celier@adacore.com>

	* bcheck.adb (Check_Consistent_Dynamic_Elaboration_Checking): No
	warning is withed unit is the interface of a Stand-Alone Library.

From-SVN: r230527

2015-11-18  Thomas Quinot  <quinot@adacore.com>

	* s-os_lib.ads, s-os_lib.adb(Normalize_Pathname): Support the case of
	an unresolved Directory argument, by recursively resolving it
	against the current dir.

2015-11-18  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb (Process_Formals): A function declaration that
	returns a class-wide type must have freeing deferred, so that it
	is not frozen before the class-wide type and its root type are
	frozen. This is significant when there may be a limited view of
	the class_wide type in another package.

From-SVN: r230526

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* einfo.adb (Has_Non_Null_Refinement): Rename to
	Has_Non_Null_Visible_Refinement.
	(Has_Null_Refinement): Rename to Has_Null_Visible_Refinement.
	* einfo.ads Update the documentation of
	attribute Has_Non_Null_Refinement and attribute Has_Null_Refinement.
	(Has_Non_Null_Refinement): Rename to Has_Non_Null_Visible_Refinement
	and update occurrences in entities.
	(Has_Null_Refinement): Rename to Has_Null_Visible_Refinement and update
	occurrences in entities.
	* sem_prag.adb (Check_In_Out_States): Update the calls to
	Has_[Non_]Null_Refinement.
	(Check_Input_States): Update the
	calls to Has_[Non_]Null_Refinement.
	(Check_Output_States): Update the calls to Has_[Non_]Null_Refinement.
	(Check_Proof_In_States): Update the calls to Has_[Non_]Null_Refinement.
	(Collect_Global_Item): Update the calls to Has_[Non_]Null_Refinement.
	(Is_Null_Refined_State): Update the calls to Has_[Non_]Null_Refinement.
	(Match_Item): Update the calls to Has_[Non_]Null_Refinement.
	* sem_util.adb (Has_Non_Null_Refinement): New routine.
	(Has_Null_Refinement): New routine.
	* sem_util.ads (Has_Non_Null_Refinement): New routine.
	(Has_Null_Refinement): New routine.

2015-11-18  Gary Dismukes  <dismukes@adacore.com>

	* exp_util.adb: Minor reformatting and typo fixes.

From-SVN: r230525

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch4.adb: Minor reformatting.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_util.adb (Expand_Subtype_From_Expr): Add new formal
	parameter Related_Id and propagate it to Make_Subtype_From_Expr.
	(Make_Subtype_From_Expr): Add new formal parameter
	Related_Id. Create external entities when requested by the caller.
	* exp_util.ads (Expand_Subtype_From_Expr): Add new formal
	parameter Related_Id. Update the comment on usage.
	(Make_Subtype_From_Expr): Add new formal parameter
	Related_Id. Update the comment on usage.
	* sem_ch3.adb (Analyze_Object_Declaration): Add local variable
	Related_Id. Generate an external constrained subtype when the
	object is a public symbol.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_prag.adb (Analyze_Pragma): Update the grammars of pragmas
	Abstract_State, Depends, Global, Initializes, Refined_Depends,
	Refined_Global and Refined_State.

From-SVN: r230524

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_util.adb (Has_Full_Default_Initialization):
	Perform the test for the presence of pragma
	Default_Initial_Condition prior to the specialized type
	checks. Add a missing case where the lack of a pragma argument
	yields full default initialization.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_res.adb (Resolve_Entity_Name): Do not check
	for elaboration issues when a variable appears as the name of
	an object renaming declaration as this constitutes an aliasing,
	not a read.

2015-11-18  Ed Schonberg  <schonberg@adacore.com>

	* checks.adb (Overlap_Check): An actual that is an aggregate
	cannot overlap with another actual, and no check should be
	generated for it.
	* targparm.ads: Fix typos.

2015-11-18  Pascal Obry  <obry@adacore.com>

	* adaint.c: Routine __gnat_killprocesstree only implemented on
	Linux and Windows.

2015-11-18  Pascal Obry  <obry@adacore.com>

	* g-ctrl_c.adb: Minor style fixes.

From-SVN: r230523

2015-11-18  Pascal Obry  <obry@adacore.com>

	* adaint.c, s-os_lib.adb, s-os_lib.ads (Kill_Process_Tree): New.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_util.adb (Check_Nonvolatile_Function_Profile): Place the error
	message concerning the return type on the result definition.
	(Is_Volatile_Function): A function with a parameter of a protected
	type is a protected function if it is defined within a protected
	definition.

2015-11-18  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb (Try_Container_Indexing): When building the
	parameter list for the function call on indexing functions,
	preserve overloading of the parameters, which may themselves be
	generalized indexing operations.

From-SVN: r230522

From-SVN: r230521

	* haifa-sched.c (haifa_finish_h_i_d): Release reg_set_list.

From-SVN: r230520

	* tree-ssa-uninit.c (convert_control_dep_chain_into_preds):
	Fix GNU coding style.
	(find_def_preds): Use auto_vec.
	(destroy_predicate_vecs): Change signature of the function.
	(prune_uninit_phi_opnds_in_unrealizable_paths): Use the
	new signature.
	(simplify_preds_4): Use destroy_predicate_vecs instread of
	just releasing preds vector.
	(normalize_preds): Likewise.
	(is_use_properly_guarded): Use new signature of
	destroy_predicate_vecs.
	(find_uninit_use): Likewise.

From-SVN: r230519

2015-11-18  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/67790
	* tree-vect-loop.c (vect_is_simple_reduction_1): Remove
	IL rewrite for MINUS_EXPR reductions, rename back to ...
	(vect_is_simple_reduction): ... this, removing the wrapper.
	(vect_force_simple_reduction): Adjust.
	(vectorizable_reduction): Adjust reduc_index for MINUS_EXPR
	reductions and make use if reduc_index in all places.  For
	the final reduction of MINUS_EXPR use PLUS_EXPR.

	* gcc.dg/vect/pr67790.c: New testcase.

From-SVN: r230518

From-SVN: r230516

From-SVN: r230515

POWERPC64_TOC_POINTER_ALIGNMENT

A default of -z relro (as on Fedora) defeats the deliberate
mis-alignment of .got in the testcase.

	* configure.ac (POWERPC64_TOC_POINTER_ALIGNMENT): Pass -z norelro
	to ld.
	* configure: Regenerate.

From-SVN: r230509

	PR bootstrap/68346

	* typeck.c (build_static_cast_1): Force a NOP when converting to
	the same type.

From-SVN: r230508

	* cp-tree.h (LITERAL_ZERO_P): Remove.
	* parser.c (cp_parser_postfix_expression, literal_zeros)
	(cp_parser_parenthesized_expression_list): Don't mess with it.

From-SVN: r230507

	* parser.c (cp_parser_unary_expression): Fold -constant here.
	* typeck.c (cp_build_unary_op): Not here.

From-SVN: r230506

2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-loop.c (pass_tree_loop_init::execute): Improve comments.

From-SVN: r230505

2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* tree-scalar-evolution.c (scev_const_prop): Dump details if replacing
	uses of ssa_name with constant.

From-SVN: r230504

2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-ccp.c (do_ssa_ccp): Clear LOOP_CLOSED_SSA in loops state if
	something changed.

From-SVN: r230503

2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* cfgloop.h (struct loop): Add in_oacc_kernels_region field.
	* omp-low.c (mark_loops_in_oacc_kernels_region): New function.
	(expand_omp_target): Call mark_loops_in_oacc_kernels_region.

From-SVN: r230502

	* regrename.c (regrename_find_superclass): New function, code moved
	from ...
	(rename_chains): ... here.  Call it.
	* regrename.h (regrename_find_superclass): Declare.

From-SVN: r230501

	* regrename.c (record_out_operands): Terminate earlyclobbered
	operands here.

From-SVN: r230500

	PR target/66785
	* regrename.c (record_operand_use): Keep track of failed operands
	and stop appending if we see any.
	* regrename.h (struct operand_rr_info): Add a failed field and shrink
	n_chains to short.

From-SVN: r230499

2015-11-17  Sandra Loosemore  <sandra@codesourcery.com>

	PR 48568
	* doc/extend.texi (Common Function Attributes) [visibility]:
	Add cross-references to matching variable and type attributes.
	(Common Variable Attributes) [visibility]: Add missing entry.

From-SVN: r230498

gcc/c/ChangeLog:
	* c-parser.c (set_c_expr_source_range): Bulletproof both
	overloaded implementations against NULL expr->value.
	(c_parser_braced_init): Set src_range for "ret" to a sane pair of
	values.
	(c_parser_unary_expression): Likewise when handling addresses of
	labels.
	(c_parser_postfix_expression): Likewise for statement expressions,
	for __FUNCTION__, __PRETTY_FUNCTION_ and __func__ keywords, for
	__builtin_va_arg, and for __builtin_offset_of.
	(c_parser_postfix_expression_after_paren_type): Initialize expr's
	src_range using the range of the braced initializer.
	(c_parser_transaction_expression): Set src_range for "ret" to a
	sane pair of values.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/diagnostic-test-expressions-1.c (vector): New
	macro.
	(test_braced_init): New function.
	(test_statement_expression): New function.
	(test_address_of_label): New function.
	(test_transaction_expressions): New function.
	(test_keywords): New function.
	(test_builtin_va_arg): New function.
	(test_builtin_offsetof): New function.
	* lib/multiline.exp (_build_multiline_regex): Escape braces.

From-SVN: r230497

	PR libstdc++/66059
	* include/std/utility (_Build_index_tuple): Optimise.

From-SVN: r230496

2015-11-17  Steven G. Kargl  <kargl@gcc.gnu.org>

	* primary.c (gfc_match_structure_constructor): Fix whitespace.

From-SVN: r230495

After the previous patches it's no longer necessary for
TARGET_BUILTIN_VECTORIZED_FUNCTION to return functions that
map to the vector optab of the original operation.  We'll use
a vector form of the internal function instead.

Tested on powerpc64-linux-gnu.

gcc/
	* config/rs6000/rs6000.c (rs6000_builtin_vectorized_function): Remove
	entries that map directly to optabs.

From-SVN: r230494

After the previous patches it's no longer necessary for
TARGET_BUILTIN_VECTORIZED_FUNCTION to return functions that
map to the vector optab of the original operation.  We'll use
a vector form of the internal function instead.

Tested on x86_64-linux-gnu.

gcc/
	* config/i386/i386.c (ix86_builtin_vectorized_function): Remove
	entries that map directly to optabs.

From-SVN: r230493

This patch tries to vectorize built-in and internal functions as
internal functions first, falling back on the current built-in
target hooks otherwise.

This means that we'll automatically pick up vector versions of optabs
without the target having to implement any special hooks.  E.g. we'll
use V4SF sqrt if the target defines a "sqrtv4sf2" optab.  As well as
being simpler, it means that the target-independent code has more
idea what the vectorized function does.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnu and
powerpc64-linux-gnu.

gcc/
	* internal-fn.h (direct_internal_fn_info): Add vectorizable flag.
	* internal-fn.c (direct_internal_fn_array): Update accordingly.
	* tree-vectorizer.h (vectorizable_function): Delete.
	* tree-vect-stmts.c: Include internal-fn.h.
	(vectorizable_internal_function): New function.
	(vectorizable_function): Inline into...
	(vectorizable_call): ...here.  Explicitly reject calls that read
	from or write to memory.  Try using an internal function before
	falling back on the old vectorizable_function behavior.

From-SVN: r230492

This patch replaces the fndecl argument to builtin_vectorized_function
with a combined_fn and gets the vectoriser to call it for internal
functions too.  The patch also moves vectorisation of machine-specific
built-ins to a new hook, builtin_md_vectorized_function.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnu and
powerpc64-linux-gnu.

gcc/
	* target.def (builtin_vectorized_function): Take a combined_fn (in
	the form of an unsigned int) rather than a function decl.
	(builtin_md_vectorized_function): New.
	* targhooks.h (default_builtin_vectorized_function): Replace the
	fndecl argument with an unsigned int.
	(default_builtin_md_vectorized_function): Declare.
	* targhooks.c (default_builtin_vectorized_function): Replace the
	fndecl argument with an unsigned int.
	(default_builtin_md_vectorized_function): New function.
	* doc/tm.texi.in (TARGET_VECTORIZE_BUILTIN_MD_VECTORIZED_FUNCTION):
	New hook.
	* doc/tm.texi: Regenerate.
	* tree-vect-stmts.c (vectorizable_function): Update call to
	builtin_vectorized_function, also passing internal functions.
	Call builtin_md_vectorized_function for target-specific builtins.
	* config/aarch64/aarch64-protos.h
	(aarch64_builtin_vectorized_function): Replace fndecl argument
	with an unsigned int.
	* config/aarch64/aarch64-builtins.c: Include case-cfn-macros.h.
	(aarch64_builtin_vectorized_function): Update after above changes.
	Use CASE_CFN_*.
	* config/arm/arm-protos.h (arm_builtin_vectorized_function): Replace
	fndecl argument with an unsigned int.
	* config/arm/arm-builtins.c: Include case-cfn-macros.h
	(arm_builtin_vectorized_function): Update after above changes.
	Use CASE_CFN_*.
	* config/i386/i386.c: Include case-cfn-macros.h
	(ix86_veclib_handler): Take a combined_fn rather than a
	built_in_function.
	(ix86_veclibabi_svml, ix86_veclibabi_acml): Likewise.  Use
	mathfn_built_in rather than calling builtin_decl_implicit directly.
	(ix86_builtin_vectorized_function) Update after above changes.
	Use CASE_CFN_*.
	* config/rs6000/rs6000.c: Include case-cfn-macros.h
	(rs6000_builtin_vectorized_libmass): Replace fndecl argument
	with a combined_fn.  Use CASE_CFN_*.  Use mathfn_built_in rather
	than calling builtin_decl_implicit directly.
	(rs6000_builtin_vectorized_function): Update after above changes.
	Use CASE_CFN_*.  Move BUILT_IN_MD to...
	(rs6000_builtin_md_vectorized_function): ...this new function.
	(TARGET_VECTORIZE_BUILTIN_MD_VECTORIZED_FUNCTION): Define.

From-SVN: r230491

In practice all targets that can vectorise sqrt define the appropriate
sqrt<mode>2 optab.  The only case where this isn't immediately obvious
is the libmass support in rs6000.c, but Mike Meissner said that it shouldn't
be exercised for sqrt.

This patch therefore uses the internal function interface instead of
going via the target hook.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnueabi and
powerpc64-linux-gnu.

gcc/
	* tree-vect-patterns.c: Include internal-fn.h.
	(vect_recog_pow_pattern): Use IFN_SQRT instead of BUILT_IN_SQRT*.

From-SVN: r230490

Nothing uses these macros and removing them makes it more likely
that future code will use CASE_CFN_* instead.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* tree.h (BUILTIN_EXP10_P, BUILTIN_EXPONENT_P, BUILTIN_SQRT_P)
	(BUILTIN_CBRT_P, BUILTIN_ROOT_P): Delete.

From-SVN: r230489

For -fmath-errno, builtins.c currently expands calls to sqrt to:

        y = sqrt_optab (x);
        if (y != y)
          [ sqrt (x); or errno = EDOM; ]

The drawbacks of this are:

- the call to sqrt is protected by the result of the optab rather
      than the input.  It would be better to check __builtin_isless (x, 0),
      like tree-call-cdce.c does.

- the branch isn't exposed at the gimple level and so gets little
      high-level optimisation.

- we do this for log too, but for log a zero input produces
      -inf rather than a NaN, and sets errno to ERANGE rather than EDOM.

This patch moves the code to tree-call-cdce.c instead, with the optab
operation being represented as an internal function.  This means that
we can use the existing argument-based range checks rather than the
result-based checks and that we get more gimple optimisation of
the branch.

Previously the pass was only enabled by default at -O2 or above,
but the old builtins.c code was enabled at -O.  The patch therefore
enables the pass at -O as well.

The previous patch to cfgexpand.c handled cases where functions
don't (or are assumed not to) set errno, so this patch makes
the builtins.c code dead.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnueabi
and visium-elf (for the EDOM stuff).

gcc/
	* builtins.c (expand_errno_check, expand_builtin_mathfn)
	(expand_builtin_mathfn_2): Delete.
	(expand_builtin): Remove handling of functions with
	internal function equivalents.
	* internal-fn.def (SET_EDOM): New internal function.
	* internal-fn.h (set_edom_supported_p): Declare.
	* internal-fn.c (expand_SET_EDOM): New function.
	(set_edom_supported_p): Likewise.
	* tree-call-cdce.c: Include builtins.h and internal-fn.h.
	Rewrite comment at head of file.
	(is_call_dce_candidate): Rename to...
	(can_test_argument_range): ...this.  Don't check gimple_call_lhs
	or gimple_call_builtin_p here.
	(edom_only_function): New function.
	(shrink_wrap_one_built_in_call_with_conds): New function, split out
	from...
	(shrink_wrap_one_built_in_call): ...here.
	(can_use_internal_fn, use_internal_fn): New functions.
	(shrink_wrap_conditional_dead_built_in_calls): Call use_internal_fn
	for calls that have an lhs.
	(pass_call_cdce::gate): Remove optimize_function_for_speed_p check.
	(pass_call_cdce::execute): Skip blocks that are optimized for size.
	Check gimple_call_builtin_p here.  Use can_use_internal_fn for
	calls with an lhs.
	* opts.c (default_options_table): Enable -ftree-builtin-call-cdce
	at -O and above.

From-SVN: r230488

This patch short-circuits the builtins.c expansion code for a particular
gimple call if:

- the function has an associated internal function
- the target implements that internal function
- the call has no side effects

This allows a later patch to remove the builtins.c code, once calls with
side effects have been handled.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* builtins.h (called_as_built_in): Declare.
	* builtins.c (called_as_built_in): Make external.
	* internal-fn.h (expand_internal_call): Define a variant that
	specifies the internal function explicitly.
	* internal-fn.c (expand_load_lanes_optab_fn)
	(expand_store_lanes_optab_fn, expand_ANNOTATE, expand_GOMP_SIMD_LANE)
	(expand_GOMP_SIMD_VF, expand_GOMP_SIMD_LAST_LANE)
	(expand_GOMP_SIMD_ORDERED_START, expand_GOMP_SIMD_ORDERED_END)
	(expand_UBSAN_NULL, expand_UBSAN_BOUNDS, expand_UBSAN_VPTR)
	(expand_UBSAN_OBJECT_SIZE, expand_ASAN_CHECK, expand_TSAN_FUNC_EXIT)
	(expand_UBSAN_CHECK_ADD, expand_UBSAN_CHECK_SUB)
	(expand_UBSAN_CHECK_MUL, expand_ADD_OVERFLOW, expand_SUB_OVERFLOW)
	(expand_MUL_OVERFLOW, expand_LOOP_VECTORIZED)
	(expand_mask_load_optab_fn, expand_mask_store_optab_fn)
	(expand_ABNORMAL_DISPATCHER, expand_BUILTIN_EXPECT, expand_VA_ARG)
	(expand_UNIQUE, expand_GOACC_DIM_SIZE, expand_GOACC_DIM_POS)
	(expand_GOACC_LOOP, expand_GOACC_REDUCTION, expand_direct_optab_fn)
	(expand_unary_optab_fn, expand_binary_optab_fn): Add an internal_fn
	argument.
	(internal_fn_expanders): Update prototype.
	(expand_internal_call): Define a variant that specifies the
	internal function explicitly. Use it to implement the previous
	interface.
	* cfgexpand.c (expand_call_stmt): Try to expand calls to built-in
	functions as calls to internal functions.

From-SVN: r230487

This patch autogenerates the operator lists for maths functions
like SQRT, adding an additional entry for internal functions.
E.g.:

        (define_operator_list SQRT
            BUILT_IN_SQRTF
            BUILT_IN_SQRT
            BUILT_IN_SQRTL
            IFN_SQRT)

and:

        (define_operator_list CABS
            BUILT_IN_CABSF
            BUILT_IN_CABS
            BUILT_IN_CABSL
            null)

(since there's no internal function for CABS).

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* Makefile.in (MOSTLYCLEANFILES): Add cfn-operators.pd.
	(generated_files): Likewise.
	(s-cfn-operators, cfn-operators.pd): New rules.
	(s-match): Depend on cfn-operators.pd.
	* gencfn-macros.c: Expand comment to describe -o behavior.
	(print_define_operator_list): New function.
	(main): Accept -o.  Call print_define_operator_list.
	* genmatch.c (main): Add the current directory to the include path.
	* match.pd (DEFINE_MATH_FN): Delete.  Include cfn-operators.pd
	instead.

From-SVN: r230486

This patch adds a null identifier that can never match anything and
can never be generated.  It is only valid in operator lists and fors.
Later patches will add uses of it.

The idea is to allow operator lists for maths functions that have
four entries:

- float built-in
- double built-in
- long double built-in
- internal function

Not all maths functions have an associated internal function,
and for those the final operator will be "null".  Any simplification
that tries to use a null substitution will be skipped.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* doc/match-and-simplify.texi: Document the "null" identifier.
	* genmatch.c (id_base::NULL_ID): New kind.
	(null_id): New variable.
	(get_operator): Add a parameter that says whether null identifiers
	are allowed.
	(contains_id): New function.
	(lower_for): Skip substitutions that would have a null_id in
	either the match or the result.
	(parser::parse_for): Allow the null identifier to be used.
	(parser::parse_operator_list): Likewise.
	(main): Initialize null_id.

From-SVN: r230485

This patch makes genmatch match calls based on combined_fn rather
than built_in_function and extends the matching to internal functions.
It also uses fold_const_call to fold the calls to a constant, rather
than going through fold_builtin_n.

In order to slightly simplify the code and remove potential
ambiguity, the patch enforces lower case for tree codes
(foo->FOO_EXPR), caps for functions (no built_in_hypot->BUILT_IN_HYPOT)
and requires an exact match for user-defined identifiers.  The first two
were already met in practice but there were a couple of cases where
operator lists were defined in one case and used in another.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* match.pd: Use HYPOT and COS rather than hypot and cos.
	Use CASE_CFN_* macros.  Guard log/exp folds with
	SCALAR_FLOAT_TYPE_P.
	* genmatch.c (internal_fn): New enum.
	(fn_id::fn): Change to an unsigned int.
	(fn_id::fn_id): Accept internal_fn too.
	(add_builtin): Rename to...
	(add_function): ...this and turn into a template.
	(get_operator): Only try one variation if the original name fails.
	Only add _EXPR if the original name was all lower case.
	Try converting internal and built-in function names to their
	CFN equivalents.
	(expr::gen_transform): Use maybe_build_call_expr_loc for generic.
	(dt_simplify::gen_1): Likewise.
	(dt_node::gen_kids_1): Use gimple_call_combined_fn for gimple
	and get_call_combined_fn for generic.
	(dt_simplify::gen): Use combined_fn as the type of fn_ids.
	(decision_tree::gen): Likewise.
	(main): Use lower case in the strings for {VIEW_,}CONVERT[012].
	Use add_function rather than add_builtin.  Register internal
	functions too.
	* generic-match-head.c: Include case-cfn-macros.h.
	* gimple-fold.c (replace_stmt_with_simplification): Use
	gimple_call_combined_fn to test whether we can keep an
	existing call.
	* gimple-match.h (code_helper): Replace built_in_function
	with combined_fn.
	* gimple-match-head.c: Include fold-const-call.h, internal-fn.h
	and case-fn-macros.h.
	(gimple_resimplify1): Use fold_const_call.
	(gimple_resimplify2, gimple_resimplify3): Likewise.
	(build_call_internal, build_call): New functions.
	(maybe_push_res_to_seq): Use them.
	(gimple_simplify): Use fold_const_call.  Set *rcode to a combined_fn
	rather than a built-in function.
	* tree.h (build_call_expr_internal_loc): Declare.
	(maybe_build_call_expr_loc): Likewise.
	* tree.c (build_call_expr_internal_loc_array): New function.
	(maybe_build_call_expr_loc): Likewise.

From-SVN: r230484

This patch extends mathfn_built_in to handle combined_fn, but keeps the
old built_in_function interface around since it's a common case.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* builtins.h (mathfn_built_in): Add a variant that takes
	a combined_fn.
	* builtins.c: Include case-cfn-macros.h.
	(CASE_MATHFN): Use CASE_CFN_*.
	(CASE_MATHFN_REENT): Use CFN_ codes.
	(mathfn_built_in_2, mathfn_built_in_1): Replace built_in_function
	argument with a combined_fn.
	(mathfn_built_in): Add a variant that takes a combined_fn.
	(expand_builtin_int_roundingfn_2): Update callers accordingly.
	(fold_builtin_sincos, fold_builtin_classify): Likewise.

From-SVN: r230483

Another patch to extend uses of built_in_function to combined_fn,
this time in tree-vect-patterns.c.  The old code didn't handle the
long double pow variants, but I think that's because noone had a target
that would benefit rather than because the code would mishandle them.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* tree-vect-patterns.c: Include case-cfn-macros.h.
	(vect_recog_pow_pattern): Use combined_fn instead of built-in codes.

From-SVN: r230482