2018-11-21  Richard Biener  <rguenther@suse.de>

	PR bootstrap/88133
	* bitmap.c (bitmap_last_set_bit): Refactor to avoid warning.
	* Makefile.in (bitmap.o-warn): Remove again.

From-SVN: r266344

2018-11-20  Jeff Law  <law@redhat.com>

	PR tree-optimization/88069
	* tree-ssa-dom.c (record_equivalences_from_phis): Propagate away
	degenerate virtual PHIs.

From-SVN: r266343

Many x86 pmovzx/pmovsx instructions with memory operands are modeled in
a wrong way.  For example:

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
    (any_extend:V8HI
      (vec_select:V8QI
        (match_operand:V16QI 1 "nonimmediate_operand" "Yrm,*xm,vm")
        (parallel [(const_int 0) (const_int 1)
               (const_int 2) (const_int 3)
               (const_int 4) (const_int 5)
               (const_int 6) (const_int 7)]))))]

should be defind for memory operands as:

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
    (any_extend:V8HI
      (match_operand:V8QI "memory_operand" "m,m,m")))]

This patch updates them to

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
	(any_extend:V8HI
	  (vec_select:V8QI
	    (match_operand:V16QI 1 "register_operand" "Yr,*x,v")
	    (parallel [(const_int 0) (const_int 1)
		       (const_int 2) (const_int 3)
		       (const_int 4) (const_int 5)
		       (const_int 6) (const_int 7)]))))]

(define_insn "*sse4_1_<code>v8qiv8hi2<mask_name>_1"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
	(any_extend:V8HI
	  (match_operand:V8QI "subreg_memory_operand" "m,m,m")))]

with a splitter:

(define_insn_and_split "*sse4_1_<code>v8qiv8hi2<mask_name>_2"
  [(set (match_operand:V8HI 0 "register_operand")
        (any_extend:V8HI
          (vec_select:V8QI
            (subreg:V16QI
              (vec_concat:V2DI
                (match_operand:DI 1 "memory_operand")
                (const_int 0)) 0)
            (parallel [(const_int 0) (const_int 1)
                       (const_int 2) (const_int 3)
                       (const_int 4) (const_int 5)
                       (const_int 6) (const_int 7)]))))]
  "TARGET_SSE4_1
   && <mask_avx512bw_condition>
   && <mask_avx512vl_condition>
  "&& can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 0)
        (any_extend:V8HI (match_dup 1)))]
  "operands[1] = adjust_address_nv (operands[1], V8QImode, 0);")

This patch requires updating apply_subst_iterator to handle
define_insn_and_split.

gcc/

	PR target/87317
	* config/i386/sse.md (sse4_1_<code>v8qiv8hi2<mask_name>): Replace
	nonimmediate_operand with register_operand.
	(avx2_<code>v8qiv8si2<mask_name>): Likewise.
	(sse4_1_<code>v4qiv4si2<mask_name>): Likewise.
	(sse4_1_<code>v4hiv4si2<mask_name>): Likewise.
	(sse4_1_<code>v2qiv2di2<mask_name>): Likewise.
	(avx512f_<code>v8qiv8di2<mask_name>): Likewise.
	(avx2_<code>v4qiv4di2<mask_name>): Likewise.
	(avx2_<code>v4hiv4di2<mask_name>): Likewise.
	(sse4_1_<code>v2hiv2di2<mask_name>): Likewise.
	(sse4_1_<code>v2siv2di2<mask_name>): Likewise.
	(*sse4_1_<code>v8qiv8hi2<mask_name>_1): New pattern.
	(*sse4_1_<code>v8qiv8hi2<mask_name>_2): Likewise.
	(*avx2_<code>v8qiv8si2<mask_name>_1): Likewise.
	(*avx2_<code>v8qiv8si2<mask_name>_2): Likewise.
	(*sse4_1_<code>v4qiv4si2<mask_name>_1): Likewise.
	(*sse4_1_<code>v4qiv4si2<mask_name>_2): Likewise.
	(*sse4_1_<code>v4hiv4si2<mask_name>_1): Likewise.
	(*sse4_1_<code>v4hiv4si2<mask_name>_2): Likewise.
	(*avx512f_<code>v8qiv8di2<mask_name>_1): Likewise.
	(*avx512f_<code>v8qiv8di2<mask_name>_2): Likewise.
	(*avx2_<code>v4qiv4di2<mask_name>_1): Likewise.
	(*avx2_<code>v4qiv4di2<mask_name>_2): Likewise.
	(*avx2_<code>v4hiv4di2<mask_name>_1): Likewise.
	(*avx2_<code>v4hiv4di2<mask_name>_2): Likewise.
	(*sse4_1_<code>v2hiv2di2<mask_name>_1): Likewise.
	(*sse4_1_<code>v2hiv2di2<mask_name>_2): Likewise.
	(*sse4_1_<code>v2siv2di2<mask_name>_1): Likewise.
	(*sse4_1_<code>v2siv2di2<mask_name>_2): Likewise.

gcc/testsuite/

	PR target/87317
	* gcc.target/i386/pr87317-1.c: New file.
	* gcc.target/i386/pr87317-2.c: Likewise.
	* gcc.target/i386/pr87317-3.c: Likewise.
	* gcc.target/i386/pr87317-4.c: Likewise.
	* gcc.target/i386/pr87317-5.c: Likewise.
	* gcc.target/i386/pr87317-6.c: Likewise.
	* gcc.target/i386/pr87317-7.c: Likewise.
	* gcc.target/i386/pr87317-8.c: Likewise.
	* gcc.target/i386/pr87317-9.c: Likewise.
	* gcc.target/i386/pr87317-10.c: Likewise.
	* gcc.target/i386/pr87317-11.c: Likewise.
	* gcc.target/i386/pr87317-12.c: Likewise.
	* gcc.target/i386/pr87317-13.c: Likewise.

From-SVN: r266342

	* read-rtl.c (apply_subst_iterator): Handle define_split and
	define_insn_and_split.

From-SVN: r266341

	PR rtl-optimization/87817
	* config/i386/i386.md (bmi2_bzhi_<mode>3, *bmi2_bzhi_<mode>3,
	*bmi2_bzhi_<mode>3_1, *bmi2_bzhi_<mode>3_1_ccz): Use IF_THEN_ELSE
	in the pattern to avoid triggering UB when operands[2] is zero.
	(tbm_bextri_<mode>): New expander.  Renamed the old define_insn to ...
	(*tbm_bextri_<mode>): ... this.

From-SVN: r266340

Factor out new function read_string in dwarf.c.

Bootstrapped and reg-tested on x86_64.

2018-11-21  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (read_string): Factor out of ...
	(read_attribute, read_line_header, read_line_program): ... here.

From-SVN: r266339

Ensure that gcc --help=params lines end with a period by:
- fixing the help message of param HOT_BB_COUNT_FRACTION, and
- adding a test-case.

Build and tested on x86_64.

2018-11-21  Tom de Vries  <tdevries@suse.de>

	PR driver/79855
	* params.def (HOT_BB_COUNT_FRACTION): Terminate help message with
	period.

	* lib/options.exp (check_for_options_with_filter): New proc.
	* gcc.misc-tests/help.exp: Check that --help=params lines end with
	period.

From-SVN: r266338

	* lang.opt (fdec-include): New option.
	* options.c (set_dec_flags): Set also flag_dec_include.
	* scanner.c (include_line): Change return type from bool to int.
	In fixed form allow spaces in between include keyword letters.
	For -fdec-include, allow in fixed form 0 in column 6.  With
	-fdec-include return -1 if the parsed line is not full include
	statement and it could be successfully completed on continuation
	lines.
	(include_stmt): New function.
	(load_file): Adjust include_line caller.  If it returns -1, keep
	trying include_stmt until it stops returning -1 whenever adding
	further line of input.

	* gfortran.dg/include_10.f: New test.
	* gfortran.dg/include_10.inc: New file.
	* gfortran.dg/include_11.f: New test.
	* gfortran.dg/include_12.f: New test.
	* gfortran.dg/include_13.f90: New test.
	* gfortran.dg/gomp/include_1.f: New test.
	* gfortran.dg/gomp/include_1.inc: New file.
	* gfortran.dg/gomp/include_2.f90: New test.

Co-Authored-By: Mark Eggleston <mark.eggleston@codethink.com>

From-SVN: r266337

The IBM z14 POP adds an optional alignment operand to the vl, vst,
vlm, and vstm instruction (vector loads and stores). Vectors residing
on 8 or 16 byte boundaries might get loaded or stored faster on some
models given the instruction uses the proper hint operand.  A wrong
hint will hurt performance though.

The attached testcase align-1 currently fails due to:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88085

gcc/ChangeLog:

2018-11-21  Andreas Krebbel  <krebbel@linux.ibm.com>

	* configure.ac: Add check for Binutils to determine whether vector
	load/store alignments hints are being supported.
	* config.in: Regenerate.
	* configure: Regenerate.
	* config/s390/s390.c (print_operand): Support new output
	modifier A.
	* config/s390/s390.md ("movti"): Append alignment hint output
	using the new output modifier 'A'.
	* config/s390/vector.md ("mov<mode>", "*vec_tf_to_v1tf")
	("*vec_ti_to_v1ti"): Likewise.

gcc/testsuite/ChangeLog:

2018-11-21  Andreas Krebbel  <krebbel@linux.ibm.com>

	* gcc.target/s390/vector/align-1.c: New test.
	* gcc.target/s390/vector/align-2.c: New test.

From-SVN: r266336

gcc/c/ChangeLog:

	* c-parser.c (c_parser_has_attribute_expression): New function.
	(c_parser_attribute): New function.
	(c_parser_attributes): Move code into c_parser_attribute.
	(c_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION.

gcc/c-family/ChangeLog:

	* c-attribs.c (type_for_vector_size): New function.
	(type_valid_for_vector_size): Same.
	(handle_vector_size_attribute): Move code to the functions above
	and call them.
	(validate_attribute, has_attribute): New functions.
	* c-common.h (has_attribute): Declare.
	(rid): Add RID_HAS_ATTRIBUTE_EXPRESSION.
	* c-common.c (c_common_resword): Same.

gcc/cp/ChangeLog:

	* cp-tree.h (cp_check_const_attributes): Declare.
	* decl2.c (cp_check_const_attributes): Declare extern.
	* parser.c (cp_parser_has_attribute_expression): New function.
	(cp_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION.
	(cp_parser_gnu_attribute_list): Add argument.

gcc/ChangeLog:

	* doc/extend.texi (Other Builtins): Add __builtin_has_attribute.

gcc/testsuite/ChangeLog:

	* c-c++-common/builtin-has-attribute-2.c: New test.
	* c-c++-common/builtin-has-attribute-3.c: New test.
	* c-c++-common/builtin-has-attribute-4.c: New test.
	* c-c++-common/builtin-has-attribute.c: New test.
	* gcc.dg/builtin-has-attribute.c: New test.
	* gcc/testsuite/gcc.target/i386/builtin-has-attribute.c: New test.

From-SVN: r266335

	PR lto/84044
	* ipa-devirt.c (odr_types_equivalent_p): Use operand_equal_p to
	compare ENUM values.
	* g++.dg/lto/odr-4_0.C: New testcase.
	* g++.dg/lto/odr-4_1.C: New testcase.

From-SVN: r266334

re PR go/88060 (../../../gcc-8.2.0/libgo/go/syscall/libcall_linux_utimesnano.go:17:18: error: reference to undefined name ‘_AT_FDCWD’)

	PR go/88060
    syscall: always define _AT_FDCWD and IPv6MTUInfo
    
    They aren't defined by old versions of glibc, but are required by the
    code in syscall_linux.go.
    
    Reviewed-on: https://go-review.googlesource.com/c/150697

From-SVN: r266333

From-SVN: r266332

re PR c++/88110 (ICE (segfault) with -std=C++2a in cxx_eval_constant_expression when trying to evaluate nonoverridden "virtual ... = 0" function of a base class)

	PR c++/88110
	* constexpr.c (cxx_eval_constant_expression) <case OBJ_TYPE_REF>: Punt
	if get_base_address of ADDR_EXPR operand is not a DECL_P.

	* g++.dg/cpp2a/constexpr-virtual13.C: New test.

From-SVN: r266329

	PR tree-optimization/87895
	* omp-simd-clone.c (ipa_simd_modify_function_body): When removing
	or replacing GIMPLE_RETURN, set EDGE_FALLTHRU on the edge to EXIT.
	(simd_clone_adjust): Don't set EDGE_FALLTHRU here. In a loop that
	redirects edges to EXIT to edges to incr_bb, iterate while EXIT
	has any preds and always use EDGE_PRED (, 0).

	* gcc.dg/gomp/pr87895-1.c: New test.
	* gcc.dg/gomp/pr87895-2.c: New test.
	* gcc.dg/gomp/pr87895-3.c: New test.

From-SVN: r266328

	PR target/88070
	* mode-switching.c (create_pre_exit): After reload, always split the
	fallthrough edge to the exit block.

testsuite/ChangeLog:

	PR target/88070
	* gcc.target/i386/pr88070.c: New test.

From-SVN: r266326

	* ipa-devirt.c (add_type_duplicate): Do not ICE on incomplete enums.
	* tree.c (build_array_type_1): Forward declare.
	(fld_type_variant_equal_p): Add INNER_TYPE parameter.
	(fld_type_variant): Likewise.
	(fld_simplified_types): New hash.
	(fld_process_array_type): New function.
	(fld_incomplete_type_of): Handle array and enumeration types.
	(fld_simplified_type): Handle simplification of arrays.
	(free_lang_data): Allocate and free simplified types hash.

From-SVN: r266325

From-SVN: r266323

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)


	PR lto/87957
	* ipa-devirt.c (odr_subtypes_equivalent_p): Report ODR violation
	when sybtype already violates ODR.
	(get_odr_type): Do not ICE when insert is false and type duplicate
	is not registered yet.
	(register_odr_type): Be sure to register subtypes first.

From-SVN: r266322

The flogr instruction uses a 64 bit register pair target operand.  In
the RTX we model this as a write to a TImode register.  Unfortunately
the RTX's being assigned to the two parts of the target operand were
swapped.  This is no problem if in the end the flogr instruction will
be emitted since the instruction still does what the clzdi expander
expects.  However, a problem arises when the RTX is used to optimize
CLZ for a constant input operand.  Even then it matters only if the
expression couldn't be folded on tree level already.

In the testcase this happened thanks to loop unrolling on RTL level.
The iteration variable is used as an argument to the clz
builtin. Due to the loop unrolling it becomes a constant and after
folding the broken RTX leads to a wrong assumption.

gcc/ChangeLog:

2018-11-20  Andreas Krebbel  <krebbel@linux.ibm.com>

	* config/s390/s390.md ("clztidi2"): Swap the RTX's written to the
	DImode parts of the target operand.

gcc/testsuite/ChangeLog:

2018-11-20  Andreas Krebbel  <krebbel@linux.ibm.com>

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

From-SVN: r266321

	PR ipa/87706
	* ipa-fnsummary.c (pass_ipa_fnsummary): Do not remove functions
	* ipa.c (possible_inline_candidate_p): Break out from ..
	(process_references): ... here ; drop before_inlining_p;
	cleanup handling of alises.
	(walk_polymorphic_call_targets): Likewise.
	(symbol_table::remove_unreachable_nodes): Likewise.
	* passes.c (pass_data_ipa_remove_symbols): New structure.
	(pass_ipa_remove_symbols): New pass.
	(make_pass_ipa_remove_symbols): New function.
	* tree-pass.h (make_pass_ipa_remove_symbols): Declare.
	* passes.def (pass_ipa_remove_symbols): Schedule after early passes.

From-SVN: r266320

	PR 87926
	* Makefile.in (bitmap.o-warn): Use -Wno-error=array-bounds.

From-SVN: r266319

	PR lto/87997
	* tree.c (free_lang_data_in_cgraph): Add argument fld; break out
	type checking to...
	(free_lang_data) ... here; update call of free_lang_data_in_cgraph.

From-SVN: r266316

	PR ipa/87706
	* ipa-fnsummary.c (pass_ipa_fnsummary): Do not remove functions
	* ipa.c (possible_inline_candidate_p): Break out from ..
	(process_references): ... here ; drop before_inlining_p;
	cleanup handling of alises.
	(walk_polymorphic_call_targets): Likewise.
	(symbol_table::remove_unreachable_nodes): Likewise.
	* passes.c (pass_data_ipa_remove_symbols): New structure.
	(pass_ipa_remove_symbols): New pass.
	(make_pass_ipa_remove_symbols): New functoin.
	* passes.def (pass_ipa_remove_symbols): Schedule after early passes.

From-SVN: r266315

tree-vect-stmts.c (vectorizable_condition): Do not get at else_clause vect def for EXTRACT_LAST_REDUCTION.

2018-11-20  Richard Biener  <rguenther@suse.de>

	* tree-vect-stmts.c (vectorizable_condition): Do not get
	at else_clause vect def for EXTRACT_LAST_REDUCTION.  Remove
	pointless vect_is_simple_use calls.

From-SVN: r266314

2018-11-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88074
	* tree-ssa-dom.c (pass_dominator::execute): Do not walk
	backedges.

	* gcc.dg/pr88074.c: New testcase.

From-SVN: r266313

2018-11-20  Martin Liska  <mliska@suse.cz>

	* pr57362.C: Move to g++.target/i386 folder.
	* pr57548.C: Likewise.
	* pr59492.C: Likewise.
	* pr82625.C: Likewise.
	* pr85329-2.C: Likewise.
	* pr85329.C: Likewise.

From-SVN: r266312

* testsuite/20_util/optional/77288.cc: Adjust.
* testsuite/20_util/optional/84601.cc: Likewise.
* testsuite/20_util/optional/assignment/1.cc: Likewise.
* testsuite/20_util/optional/assignment/2.cc: Likewise.
* testsuite/20_util/optional/assignment/3.cc: Likewise.
* testsuite/20_util/optional/assignment/4.cc: Likewise.
* testsuite/20_util/optional/assignment/5.cc: Likewise.
* testsuite/20_util/optional/assignment/6.cc: Likewise.
* testsuite/20_util/optional/assignment/7.cc: Likewise.
* testsuite/20_util/optional/assignment/8.cc: Likewise.
* testsuite/20_util/optional/cons/77727.cc: Likewise.
* testsuite/20_util/optional/cons/copy.cc: Likewise.
* testsuite/20_util/optional/cons/deduction.cc: Likewise.
* testsuite/20_util/optional/cons/default.cc: Likewise.
* testsuite/20_util/optional/cons/move.cc: Likewise.
* testsuite/20_util/optional/cons/trivial.cc: Likewise.
* testsuite/20_util/optional/cons/value.cc: Likewise.
* testsuite/20_util/optional/cons/value_neg.cc: Likewise.
* testsuite/20_util/optional/constexpr/cons/default.cc: Likewise.
* testsuite/20_util/optional/constexpr/cons/value.cc: Likewise.
* testsuite/20_util/optional/constexpr/in_place.cc: Likewise.
* testsuite/20_util/optional/constexpr/nullopt.cc: Likewise.
* testsuite/20_util/optional/constexpr/observers/1.cc: Likewise.
* testsuite/20_util/optional/constexpr/observers/4.cc: Likewise.
* testsuite/20_util/optional/constexpr/observers/5.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/1.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/2.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/3.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/4.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/5.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/6.cc: Likewise.
* testsuite/20_util/optional/in_place.cc: Likewise.
* testsuite/20_util/optional/make_optional.cc: Likewise.
* testsuite/20_util/optional/nullopt.cc: Likewise.
* testsuite/20_util/optional/observers/1.cc: Likewise.
* testsuite/20_util/optional/observers/2.cc: Likewise.
* testsuite/20_util/optional/observers/3.cc: Likewise.
* testsuite/20_util/optional/observers/4.cc: Likewise.
* testsuite/20_util/optional/observers/5.cc: Likewise.
* testsuite/20_util/optional/observers/6.cc: Likewise.
* testsuite/20_util/optional/relops/1.cc: Likewise.
* testsuite/20_util/optional/relops/2.cc: Likewise.
* testsuite/20_util/optional/relops/3.cc: Likewise.
* testsuite/20_util/optional/relops/4.cc: Likewise.
* testsuite/20_util/optional/relops/5.cc: Likewise.
* testsuite/20_util/optional/relops/6.cc: Likewise.
* testsuite/20_util/optional/relops/7.cc: Likewise.
* testsuite/20_util/optional/requirements.cc: Likewise.
* testsuite/20_util/optional/swap/1.cc: Likewise.
* testsuite/20_util/optional/swap/2.cc: Likewise.
* testsuite/20_util/optional/typedefs.cc: Likewise.

From-SVN: r266310

	PR bootstrap/88106
	* config/mingw32/affinity-fmt.c: New file.

From-SVN: r266309

2018-11-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88069
	* tree-ssa-sccvn.c (visit_phi): Do not value-number to unvisited
	virtual PHI arguments.

	* gcc.dg/pr88069.c: New testcase.

From-SVN: r266308

2018-11-20  Martin Liska  <mliska@suse.cz>

	PR ipa/88093
	* gcc.target/i386/ipa-stack-alignment.c: Add
	-fomit-frame-pointer.

From-SVN: r266307

By the time peephole optimizations run, we've already made up our mind
whether to use base-register or relative addressing for literal pool
entries.  LT(G) supports only base-register addressing, and so it is
too late to convert L(G)RL + compare to LT(G).  This change should not
make the code worse unless building with e.g. -fno-dce, since comparing
literal pool entries to zero should be optimized away during earlier
passes.

gcc/ChangeLog:

2018-11-20  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/88083
	* config/s390/s390.md: Skip LT(G) peephole when literal pool is
	involved.
	* rtl.h (contains_constant_pool_address_p): New function.
	* rtlanal.c (contains_constant_pool_address_p): Likewise.

gcc/testsuite/ChangeLog:

2018-11-20  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/88083
	* gcc.target/s390/pr88083.c: New test.

From-SVN: r266306

2018-11-20  Richard Biener  <rguenther@suse.de>

	PR middle-end/83215
	* alias.c (component_uses_parent_alias_set_from): Remove
	alias-set zero and TYPE_TYPELESS_STORAGE case both already
	handled in other ways.

	* g++.dg/tree-ssa/pr83215.C: New testcase.

From-SVN: r266305

	PR rtl-optimization/85925
	* rtl.h (word_register_operation_p): New predicate.
	* combine.c (record_dead_and_set_regs_1): Only apply specific handling
	for WORD_REGISTER_OPERATIONS targets to word_register_operation_p RTX.
	* rtlanal.c (nonzero_bits1): Likewise.  Adjust couple of comments.
	(num_sign_bit_copies1): Likewise.

From-SVN: r266302

2018-11-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88087
	* tree-ssa-pre.c (create_expression_by_pieces): Re-materialize
	call fntype.
	* tree-ssa-sccvn.c (copy_reference_ops_from_call): Remember
	call fntype.

	* gcc.dg/tree-ssa/pr88087.c: New testcase.

From-SVN: r266301

2018-11-20  Richard Biener  <rguenther@suse.de>

	PR middle-end/88089
	* tree-data-ref.c (lambda_matrix_right_hermite): Use abs_hwi.

From-SVN: r266300

	    * gcc.c-torture/execute/align-3.c: Skip if pdp11.
	    * gcc.c-torture/execute/pr23467.c: Ditto.
	    * gcc.c-torture/execute/pr36093.c: Ditto.
	    * gcc.c-torture/execute/pr43783.c: Ditto.
	    * gcc.dg/const-elim-2.c: Xfail if pdp11.
	    * gcc.dg/torture/pr36400.c: Ditto.
	    * gcc.dg/tree-ssa/loop-1.c: Xfail for pdp11.  Add pdp11 to check
	    for jsr.

From-SVN: r266299

	* lib/target-supports.exp (check_weak_available): Return "no" for
	pdp11.

From-SVN: r266297

From-SVN: r266293

gnattools build machinery uses just-build xgcc and xg++ as $(CC) and
$(CXX) in native builds.  However, if C and C++ languages are not
enabled, it won't find them.  So, enable C and C++ if Ada is enabled.
Most of the time, this is probably no big deal: C is always enabled
anyway, and C++ is already enabled for bootstraps.

We need not enable those for cross builds, however.  At first I just
took the logic from gnattools/configure, but found it to be lacking:
it would use the just-built tools even in cross-back settings, whose
tools just built for the host would not run on the build machine.  So
I've narrowed down the test to rely on autoconf-detected cross-ness
(build->host only), but also to ensure that host matches build, and
that target matches host.

I've considered sourcing ada/config-lang.in from within
gnattools/configure, and testing lang_requires as set by it, so as to
avoid a duplication of tests that ought to remain in sync, but decided
it would be too fragile, as ada/config-lang.in does not expect srcdir
to refer to gnattools.

for  gcc/ada/ChangeLog

	PR ada/81878
	* gcc-interface/config-lang.in (lang_requires): Set to "c c++"
	when gnattools wants it.

for  gnattools/ChangeLog

	PR ada/81878
	* configure.ac (default_gnattools_target): Do not mistake
	just-built host tools as native in cross-back toolchains.
	* configure: Rebuilt.

From-SVN: r266290