* Makefile.def (target_modules): Remove libcilkrts.
	* Makefile.in: Ditto.
	* configure: Ditto.
	* configure.ac: Ditto.

contrib/
	* contrib/gcc_update: Ditto.

gcc/
	* Makefile.in (cilkplus.def, cilk-builtins.def, c-family/cilk.o, 
	c-family/c-cilkplus.o, c-family/array-notation-common.o,
	cilk-common.o, cilk.h, cilk-common.c): Remove.
	* builtin-types.def
	(BT_FN_INT_PTR_PTR_PTR_FTYPE_BT_INT_BT_PTR_BT_PTR_BT_PTR): Remove.
	* builtins.c (is_builtin_name): Remove cilkplus condition.
	(BUILT_IN_CILK_DETACH, BUILT_IN_CILK_POP_FRAME): Remove.
	* builtins.def (DEF_CILK_BUILTIN_STUB, DEF_CILKPLUS_BUILTIN,
	cilk-builtins.def, cilkplus.def): Remove.
	* cif-code.def (CILK_SPAWN): Remove.
	* cilk-builtins.def: Delete.
	* cilk-common.c: Ditto.
	* cilk.h: Ditto.
	* cilkplus.def: Ditto.
	* config/darwin.h (fcilkplus): Delete.
	* cppbuiltin.c: Ditto.
	* doc/extend.texi: Remove cilkplus doc.
	* doc/generic.texi: Ditto.
	* doc/invoke.texi: Ditto.
	* doc/passes.texi: Ditto.
	* gcc.c (fcilkplus): Remove.
	* gengtype.c (cilk.h): Remove.
	* gimple-pretty-print.c (dump_gimple_omp_for): Remove cilkplus support.
	* gimple.h (GF_OMP_FOR_KIND_CILKFOR, GF_OMP_FOR_KIND_CILKSIMD): Remove.
	* gimplify.c (gimplify_return_expr, maybe_fold_stmt,
	gimplify_call_expr, is_gimple_stmt, gimplify_modify_expr,
	gimplify_scan_omp_clauses, gimplify_adjust_omp_clauses,
	gimplify_omp_for, gimplify_expr): Remove cilkplus conditions.
	* ipa-fnsummary.c (ipa_dump_fn_summary, compute_fn_summary,
	inline_read_section): Ditto.
	* ipa-inline-analysis.c (cilk.h): Remove.
	* ira.c (ira_setup_eliminable_regset): Remove cilkplus support.
	* lto-wrapper.c (merge_and_complain, append_compiler_options,
	append_linker_options): Remove condition for fcilkplus.
	* lto/lto-lang.c (cilk.h): Remove.
	(lto_init): Remove condition for fcilkplus.
	* omp-expand.c (expand_cilk_for_call): Delete.
	(expand_omp_taskreg, expand_omp_for_static_chunk,
	expand_omp_for): Remove cilkplus
	conditions.
	(expand_cilk_for): Delete.
	* omp-general.c (omp_extract_for_data): Remove cilkplus support.
	* omp-low.c (scan_sharing_clauses, create_omp_child_function,
	execute_lower_omp, diagnose_sb_0): Ditto.
	* omp-simd-clone.c (simd_clone_clauses_extract): Ditto.
	* tree-core.h (OMP_CLAUSE__CILK_FOR_COUNT_): Delete.
	* tree-nested.c: Ditto.
	* tree-pretty-print.c (dump_omp_clause): Remove cilkplus support.
	(dump_generic_node): Ditto.
	* tree.c (OMP_CLAUSE__CILK_FOR_COUNT_): Delete.
	* tree.def (cilk_simd, cilk_for, cilk_spawn_stmt,
	cilk_sync_stmt): Delete.
	* tree.h (CILK_SPAWN_FN, EXPR_CILK_SPAWN): Delete.

gcc/c-family/
	* array-notation-common.c: Delete.
	* c-cilkplus.c: Ditto.
	* c-common.c (_Cilk_spawn, _Cilk_sync, _Cilk_for): Remove.
	* c-common.def (ARRAY_NOTATION_REF): Remove.
	* c-common.h (RID_CILK_SPAWN, build_array_notation_expr,
	build_array_notation_ref, C_ORT_CILK, c_check_cilk_loop,
	c_validate_cilk_plus_loop, cilkplus_an_parts,
	cilk_ignorable_spawn_rhs_op,
	cilk_recognize_spawn): Remove.
	* c-gimplify.c (CILK_SPAWN_STMT): Remove.
	* c-omp.c: Remove CILK_SIMD check.
	* c-pragma.c: Ditto.
	* c-pragma.h: Remove CILK related pragmas.
	* c-pretty-print.c (c_pretty_printer::postfix_expression): Remove
	ARRAY_NOTATION_REF condition.
	(c_pretty_printer::expression): Ditto.
	* c.opt (fcilkplus): Remove.
	* cilk.c: Delete.

gcc/c/
	* Make-lang.in (c/c-array-notation.o): Remove.
	* c-array-notation.c: Delete.
	* c-decl.c: Remove cilkplus condition.
	* c-parser.c (c_parser_cilk_simd, c_parser_cilk_for,
	c_parser_cilk_verify_simd, c_parser_array_notation,
	c_parser_cilk_clause_vectorlength, c_parser_cilk_grainsize,
	c_parser_cilk_simd_fn_vector_attrs,
	c_finish_cilk_simd_fn_tokens): Delete.
	(c_parser_declaration_or_fndef): Remove cilkplus condition.
	(c_parser_direct_declarator_inner): Ditto.
	(CILK_SIMD_FN_CLAUSE_MASK): Delete.
	(c_parser_attributes, c_parser_compound_statement,
	c_parser_statement_after_labels, c_parser_if_statement,
	c_parser_switch_statement, c_parser_while_statement,
	c_parser_do_statement, c_parser_for_statement,
	c_parser_unary_expression, c_parser_postfix_expression,
	c_parser_postfix_expression_after_primary,
	c_parser_pragma, c_parser_omp_clause_name, c_parser_omp_all_clauses,
	c_parser_omp_for_loop,
	c_finish_omp_declare_simd): Remove cilkplus support.
	* c-typeck.c (build_array_ref, build_function_call_vec,
	convert_arguments, lvalue_p, build_compound_expr, c_finish_return,
	c_finish_if_stmt, c_finish_loop,
	build_binary_op): Remove cilkplus support.
	
gcc/cp/
	* Make-lang.in (cp/cp-array-notation.o, cp/cp-cilkplus.o): Delete.
	* call.c (convert_for_arg_passing, build_cxx_call): Remove cilkplus.
	* constexpr.c (potential_constant_expression_1): Ditto.
	* cp-array-notation.c: Delete.
	* cp-cilkplus.c: Ditto.
	* cp-cilkplus.h: Ditto.
	* cp-gimplify.c (cp_gimplify_expr, cp_fold_r, cp_genericize): Remove
	cilkplus condition.
	* cp-objcp-common.c (ARRAY_NOTATION_REF): Delete.
	* cp-tree.h (cilkplus_an_triplet_types_ok_p): Delete.
	* decl.c (grokfndecl, finish_function): Remove cilkplus condition.
	* error.c (dump_decl, dump_expr): Remove ARRAY_NOTATION_REF condition.
	* lambda.c (cp-cilkplus.h): Remove.
	* parser.c (cp_parser_cilk_simd, cp_parser_cilk_for,
	cp_parser_cilk_simd_vectorlength): Delete.
	(cp_debug_parser, cp_parser_ctor_initializer_opt_and_function_body,
	cp_parser_postfix_expression, cp_parser_postfix_open_square_expression,
	cp_parser_statement, cp_parser_jump_statement,
	cp_parser_direct_declarator,
	cp_parser_late_return_type_opt, cp_parser_gnu_attribute_list,
	cp_parser_omp_clause_name, cp_parser_omp_clause_aligned,
	cp_parser_omp_clause_linear, cp_parser_omp_all_clauses,
	cp_parser_omp_flush, cp_parser_omp_for_cond, cp_parser_omp_for_incr,
	cp_parser_omp_for_loop_init, cp_parser_omp_for_loop,
	cp_parser_omp_declare_simd): Remove cilkplus support.
	(CILK_SIMD_FN_CLAUSE_MASK, cp_parser_late_parsing_cilk_simd_fn_info,
	cp_parser_cilk_grainsize): Remove.
	(cp_parser_pragma, c_parse_file): Remove cilkplus support.
	(cp_parser_cilk_simd_vectorlength, cp_parser_cilk_simd_linear,
	cp_parser_cilk_simd_clause_name, cp_parser_cilk_simd_all_clauses,
	cp_parser_cilk_simd, cp_parser_cilk_for): Remove.
	* parser.h (IN_CILK_SIMD_FOR, IN_CILK_SPAWN): Remove.
	* pt.c (tsubst_attribute, tsubst_expr, tsubst_copy_and_build): Remove
	cilkplus support.
	* semantics.c (finish_goto_stmt, begin_while_stmt, finish_do_body,
	finish_init_stmt, finish_switch_cond, simplify_aggr_init_expr,
	finish_omp_clauses, finish_omp_clauses,
	finish_omp_for): Remove cilkplus support.
	* tree.c (lvalue_kind): Remove ARRAY_NOTATION_REF conditon.
	* typeck.c (cp_build_array_ref, cp_build_compound_expr,
	check_return_expr): Remove cilkplus support.

gcc/testsuite/
	* c-c++-common/attr-simd-3.c: Delete.
	* c-c++-common/cilk-plus/AN/an-if.c: Delete.
	* c-c++-common/cilk-plus/AN/array_test1.c: Delete.
	* c-c++-common/cilk-plus/AN/array_test2.c: Delete.
	* c-c++-common/cilk-plus/AN/array_test_ND.c: Delete.
	* c-c++-common/cilk-plus/AN/builtin_fn_custom.c: Delete.
	* c-c++-common/cilk-plus/AN/builtin_fn_mutating.c: Delete.
	* c-c++-common/cilk-plus/AN/builtin_func_double.c: Delete.
	* c-c++-common/cilk-plus/AN/builtin_func_double2.c: Delete.
	* c-c++-common/cilk-plus/AN/comma_exp.c: Delete.
	* c-c++-common/cilk-plus/AN/conditional.c: Delete.
	* c-c++-common/cilk-plus/AN/decl-ptr-colon.c: Delete.
	* c-c++-common/cilk-plus/AN/dimensionless-arrays.c: Delete.
	* c-c++-common/cilk-plus/AN/exec-once.c: Delete.
	* c-c++-common/cilk-plus/AN/exec-once2.c: Delete.
	* c-c++-common/cilk-plus/AN/fn_ptr-2.c: Delete.
	* c-c++-common/cilk-plus/AN/fn_ptr.c: Delete.
	* c-c++-common/cilk-plus/AN/fp_triplet_values.c: Delete.
	* c-c++-common/cilk-plus/AN/gather-scatter-errors.c: Delete.
	* c-c++-common/cilk-plus/AN/gather_scatter.c: Delete.
	* c-c++-common/cilk-plus/AN/if_test.c: Delete.
	* c-c++-common/cilk-plus/AN/if_test_errors.c: Delete.
	* c-c++-common/cilk-plus/AN/misc.c: Delete.
	* c-c++-common/cilk-plus/AN/n-ptr-test.c: Delete.
	* c-c++-common/cilk-plus/AN/parser_errors.c: Delete.
	* c-c++-common/cilk-plus/AN/parser_errors2.c: Delete.
	* c-c++-common/cilk-plus/AN/parser_errors3.c: Delete.
	* c-c++-common/cilk-plus/AN/parser_errors4.c: Delete.
	* c-c++-common/cilk-plus/AN/pr57457-2.c: Delete.
	* c-c++-common/cilk-plus/AN/pr57457.c: Delete.
	* c-c++-common/cilk-plus/AN/pr57490.c: Delete.
	* c-c++-common/cilk-plus/AN/pr57541-2.c: Delete.
	* c-c++-common/cilk-plus/AN/pr57541.c: Delete.
	* c-c++-common/cilk-plus/AN/pr57577.c: Delete.
	* c-c++-common/cilk-plus/AN/pr58942.c: Delete.
	* c-c++-common/cilk-plus/AN/pr61191.c: Delete.
	* c-c++-common/cilk-plus/AN/pr61455-2.c: Delete.
	* c-c++-common/cilk-plus/AN/pr61455.c: Delete.
	* c-c++-common/cilk-plus/AN/pr61962.c: Delete.
	* c-c++-common/cilk-plus/AN/pr61963.c: Delete.
	* c-c++-common/cilk-plus/AN/pr62008.c: Delete.
	* c-c++-common/cilk-plus/AN/pr63884.c: Delete.
	* c-c++-common/cilk-plus/AN/rank_mismatch.c: Delete.
	* c-c++-common/cilk-plus/AN/rank_mismatch2.c: Delete.
	* c-c++-common/cilk-plus/AN/rank_mismatch3.c: Delete.
	* c-c++-common/cilk-plus/AN/sec_implicit.c: Delete.
	* c-c++-common/cilk-plus/AN/sec_implicit2.c: Delete.
	* c-c++-common/cilk-plus/AN/sec_implicit_ex.c: Delete.
	* c-c++-common/cilk-plus/AN/sec_reduce_ind_same_value.c: Delete.
	* c-c++-common/cilk-plus/AN/sec_reduce_max_min_ind.c: Delete.
	* c-c++-common/cilk-plus/AN/sec_reduce_return.c: Delete.
	* c-c++-common/cilk-plus/AN/side-effects-1.c: Delete.
	* c-c++-common/cilk-plus/AN/test_builtin_return.c: Delete.
	* c-c++-common/cilk-plus/AN/test_sec_limits.c: Delete.
	* c-c++-common/cilk-plus/AN/tst_lngth.c: Delete.
	* c-c++-common/cilk-plus/AN/vla.c: Delete.
	* c-c++-common/cilk-plus/CK/Wparentheses-1.c: Delete.
	* c-c++-common/cilk-plus/CK/cilk-for-2.c: Delete.
	* c-c++-common/cilk-plus/CK/cilk-for-3.c: Delete.
	* c-c++-common/cilk-plus/CK/cilk-fors.c: Delete.
	* c-c++-common/cilk-plus/CK/cilk_for_errors.c: Delete.
	* c-c++-common/cilk-plus/CK/cilk_for_grain.c: Delete.
	* c-c++-common/cilk-plus/CK/cilk_for_grain_errors.c: Delete.
	* c-c++-common/cilk-plus/CK/cilk_for_ptr_iter.c: Delete.
	* c-c++-common/cilk-plus/CK/compound_cilk_spawn.c: Delete.
	* c-c++-common/cilk-plus/CK/concec_cilk_spawn.c: Delete.
	* c-c++-common/cilk-plus/CK/errors.c: Delete.
	* c-c++-common/cilk-plus/CK/fib.c: Delete.
	* c-c++-common/cilk-plus/CK/fib_init_expr_xy.c: Delete.
	* c-c++-common/cilk-plus/CK/fib_no_return.c: Delete.
	* c-c++-common/cilk-plus/CK/fib_no_sync.c: Delete.
	* c-c++-common/cilk-plus/CK/invalid_spawns.c: Delete.
	* c-c++-common/cilk-plus/CK/invalid_sync.c: Delete.c
	* c-c++-common/cilk-plus/CK/nested_cilk_for.c: Delete.
	* c-c++-common/cilk-plus/CK/no_args_error.c: Delete.
	* c-c++-common/cilk-plus/CK/pr59631.c: Delete.
	* c-c++-common/cilk-plus/CK/pr60197-2.c: Delete.
	* c-c++-common/cilk-plus/CK/pr60197.c: Delete.
	* c-c++-common/cilk-plus/CK/pr60469.c: Delete.
	* c-c++-common/cilk-plus/CK/pr60586.c: Delete.
	* c-c++-common/cilk-plus/CK/pr63307.c: Delete.
	* c-c++-common/cilk-plus/CK/pr69826-1.c: Delete.
	* c-c++-common/cilk-plus/CK/pr69826-2.c: Delete.
	* c-c++-common/cilk-plus/CK/pr79428-4.c: Delete.
	* c-c++-common/cilk-plus/CK/pr79428-7.c: Delete.
	* c-c++-common/cilk-plus/CK/spawn_in_return.c: Delete.
	* c-c++-common/cilk-plus/CK/spawnee_inline.c: Delete.
	* c-c++-common/cilk-plus/CK/spawner_inline.c: Delete.
	* c-c++-common/cilk-plus/CK/spawning_arg.c: Delete.
	* c-c++-common/cilk-plus/CK/steal_check.c: Delete.
	* c-c++-common/cilk-plus/CK/sync_wo_spawn.c: Delete.
	* c-c++-common/cilk-plus/CK/test__cilk.c: Delete.
	* c-c++-common/cilk-plus/CK/varargs_test.c: Delete.
	* c-c++-common/cilk-plus/PS/Wparentheses-1.c: Delete.
	* c-c++-common/cilk-plus/PS/body.c: Delete.
	* c-c++-common/cilk-plus/PS/clauses1.c: Delete.
	* c-c++-common/cilk-plus/PS/clauses2.c: Delete.
	* c-c++-common/cilk-plus/PS/clauses3.c: Delete.
	* c-c++-common/cilk-plus/PS/clauses4.c: Delete.
	* c-c++-common/cilk-plus/PS/for1.c: Delete.
	* c-c++-common/cilk-plus/PS/for2.c: Delete.
	* c-c++-common/cilk-plus/PS/for3.c: Delete.
	* c-c++-common/cilk-plus/PS/pr69363.c: Delete.
	* c-c++-common/cilk-plus/PS/reduction-1.c: Delete.
	* c-c++-common/cilk-plus/PS/reduction-2.c: Delete.
	* c-c++-common/cilk-plus/PS/reduction-3.c: Delete.
	* c-c++-common/cilk-plus/PS/run-1.c: Delete.
	* c-c++-common/cilk-plus/PS/safelen.c: Delete.
	* c-c++-common/cilk-plus/PS/vectorlength-2.c: Delete.
	* c-c++-common/cilk-plus/PS/vectorlength-3.c: Delete.
	* c-c++-common/cilk-plus/PS/vectorlength.c: Delete.
	* c-c++-common/cilk-plus/SE/ef_error.c: Delete.
	* c-c++-common/cilk-plus/SE/ef_error2.c: Delete.
	* c-c++-common/cilk-plus/SE/ef_error3.c: Delete.
	* c-c++-common/cilk-plus/SE/ef_test.c: Delete.
	* c-c++-common/cilk-plus/SE/ef_test2.c: Delete.
	* c-c++-common/cilk-plus/SE/vlength_errors.c: Delete.
	* g++.dg/cilk-plus/AN/array_function.c: Delete.
	* g++.dg/cilk-plus/AN/array_test1_tplt.c: Delete.
	* g++.dg/cilk-plus/AN/array_test2_tplt.c: Delete.
	* g++.dg/cilk-plus/AN/array_test_ND_tplt.c: Delete.
	* g++.dg/cilk-plus/AN/braced_list.c: Delete.
	* g++.dg/cilk-plus/AN/builtin_fn_custom_tplt.c: Delete.
	* g++.dg/cilk-plus/AN/builtin_fn_mutating_tplt.c: Delete.
	* g++.dg/cilk-plus/AN/fp_triplet_values_tplt.c: Delete.
	* g++.dg/cilk-plus/AN/postincr_test.c: Delete.
	* g++.dg/cilk-plus/AN/preincr_test.c: Delete.
	* g++.dg/cilk-plus/CK/catch_exc.c: Delete.
	* g++.dg/cilk-plus/CK/cf3.c: Delete.
	* g++.dg/cilk-plus/CK/cilk-for-tplt.c: Delete.
	* g++.dg/cilk-plus/CK/const_spawn.c: Delete.
	* g++.dg/cilk-plus/CK/fib-opr-overload.c: Delete.
	* g++.dg/cilk-plus/CK/fib-tplt.c: Delete.
	* g++.dg/cilk-plus/CK/for1.c: Delete.
	* g++.dg/cilk-plus/CK/lambda_spawns.c: Delete.
	* g++.dg/cilk-plus/CK/lambda_spawns_tplt.c: Delete.
	* g++.dg/cilk-plus/CK/pr60586.c: Delete.
	* g++.dg/cilk-plus/CK/pr66326.c: Delete.
	* g++.dg/cilk-plus/CK/pr68001.c: Delete.
	* g++.dg/cilk-plus/CK/pr68997.c: Delete.
	* g++.dg/cilk-plus/CK/pr69024.c: Delete.
	* g++.dg/cilk-plus/CK/pr69048.c: Delete.
	* g++.dg/cilk-plus/CK/pr69267.c: Delete.
	* g++.dg/cilk-plus/CK/pr80038.c: Delete.
	* g++.dg/cilk-plus/CK/stl_iter.c: Delete.
	* g++.dg/cilk-plus/CK/stl_rev_iter.c: Delete.
	* g++.dg/cilk-plus/CK/stl_test.c: Delete.
	* g++.dg/cilk-plus/cilk-plus.exp
	* g++.dg/cilk-plus/ef_test.C: Delete.
	* g++.dg/cilk-plus/for.C: Delete.
	* g++.dg/cilk-plus/for2.C: Delete.
	* g++.dg/cilk-plus/for3.C: Delete.
	* g++.dg/cilk-plus/for4.C: Delete.
	* g++.dg/cilk-plus/pr60967.C: Delete.
	* g++.dg/cilk-plus/pr69028.C: Delete.
	* g++.dg/cilk-plus/pr70565.C: Delete.
	* g++.dg/pr57662.C: Delete.
	* gcc.dg/cilk-plus/cilk-plus.exp
	* gcc.dg/cilk-plus/for1.c: Delete.
	* gcc.dg/cilk-plus/for2.c: Delete.
	* gcc.dg/cilk-plus/jump-openmp.c: Delete.
	* gcc.dg/cilk-plus/jump.c: Delete.
	* gcc.dg/cilk-plus/pr69798-1.c: Delete.
	* gcc.dg/cilk-plus/pr69798-2.c: Delete.
	* gcc.dg/cilk-plus/pr78306.c: Delete.
	* gcc.dg/cilk-plus/pr79116.c: Delete.
	* gcc.dg/graphite/id-28.c: Delete.
	* lib/cilk-plus-dg.exp: Delete.
	* lib/target-supports.exp (cilkplus_runtime): Delete.

Co-Authored-By: Sebastian Peryt <sebastian.peryt@intel.com>

From-SVN: r255195

The canonical examples is :

    double
    foo (double x, double y)
      {
        return x / y;
      }

    with -march=armv8-a+nosimd

generates a function that calls __divdf3. Ofcourse on AArch64 we don't
have any software floating point and this causes issues.

There is also a problem in +nosimd that has existed since the dawn of
time in the port with respect to long doubles (128 bit floating
point), here the ABI and the compiler expect the presence of the SIMD
unit as these parameters are passed in the vector registers. Thus
while +nosimd tries to prevent the use of SIMD instructions in the
compile we don't get this right as we end up using ldr qN / str qN
instructions and even there I think things go wrong in a simple
example that I tried.

Is that sufficient to consider marking +nosimd as deprecated in GCC-8
and remove this in a future release ?

That is not a subject for this patch but something separate but I
would like to put this into trunk and the release
branches. Bootstrapped and regression tested on my aarch64 desktop.

Ok ?

From-SVN: r255194

re PR rtl-optimization/81020 (wrong code with -O -fno-tree-bit-ccp -fno-tree-coalesce-vars -fno-tree-vrp)

	PR rtl-optimization/81020
	* gcc.dg/pr81020.c: New test.

From-SVN: r255193

	* tree.def (SWITCH_EXPR): Change from 3 operand to 2 operand tree.
	Adjust comment.
	* tree.h (SWITCH_LABELS): Remove.
	* gimplify.c (gimplify_switch_expr): Don't test SWITCH_LABELS,
	assert SWITCH_BODY is non-NULL.
	* tree-pretty-print.c (dump_generic_node): Remove SWITCH_LABELS
	handling.
	* tree.c (block_may_fallthru): Always return true; for SWITCH_EXPR.
c/
	* c-typeck.c (c_start_case): Build SWITCH_EXPR using build2 instead
	of build3.
cp/
	* cp-gimplify.c (genericize_switch_stmt): Build SWITCH_EXPR using
	build2_loc instead of build3_loc.
ada/
	* gcc-interface/trans.c (Case_Statement_to_gnu): Build SWITCH_EXPR
	using build2 instead of build3.
jit/
	* jit-playback.c (add_switch): Build SWITCH_EXPR using build2 instead
	of build3.  Formatting fixes.  Adjust funciton comment.
fortran/
	* trans-decl.c (gfc_trans_entry_master_switch): Build SWITCH_EXPR
	using fold_build2_loc instead of fold_build3_loc.
	* trans-io.c (io_result): Likewise.
	* trans-stmt.c (gfc_trans_integer_select, gfc_trans_character_select):
	Likewise.
go/
	* go-gcc.cc (Gcc_backend::switch_statement): Build SWITCH_EXPR using
	build2_loc instead of build3_loc.
brig/
	* brigfrontend/brig-branch-inst-handler.cc
	(brig_branch_inst_handler::operator): Build SWITCH_EXPR using build2
	instead of build3.

From-SVN: r255192

	PR tree-optimization/80788
	* match.pd (X +- C1 CMP C2 -> X CMP C2 -+ C1): If res
	has TREE_OVERFLOW set, call drop_tree_overflow.

	* gcc.dg/pr80788.c: New test.

From-SVN: r255191

2017-11-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83158
	* tree-vrp.c (intersect_ranges): Prefer ~[0, 0] in a few more
	cases.

From-SVN: r255190

From-SVN: r255189

The current rs6000 rtx_cost for comparisons against 0 is very high if
TARGET_ISEL && !TARGET_MFCRF, much higher than for reg-reg comparisons,
much higher than a load of 0 and such a reg-reg-comparison.  This leads
to infinite recursion in CSE (see PR81288).

This patch removes the too-high cost, also simplifying this code.


	PR 81288/target
	* config/rs6000/rs6000.c (rs6000_rtx_costs): Do not handle
	TARGET_ISEL && !TARGET_MFCRF differently.  Simplify code.

From-SVN: r255188

If we have a negative condition we can use a literal 0 in the isel,
instead of having to load it into a register.  If the condition is from
a comparison with an immediate we can change e.g. LT to LE and adjust
the immediate, saving a li instruction.


	* config/rs6000/rs6000.md (<code><GPR:mode><GPR2:mode>2_isel): Change
	LT/GT/LTU/GTU to LE/GE/LEU/GEU where possible.

From-SVN: r255186

From-SVN: r255185

gcc/cp/ChangeLog:

	PR c++/83058
	* init.c (warn_placement_new_too_small): Use offset_int instead of
	HOST_WIDE_INT.

gcc/testsuite/ChangeLog:

	PR c++/83058
	* g++.dg/warn/Wplacement-new-size-5.C: New test.

From-SVN: r255182

	PR c++/81888
	* parser.c (cp_parser_decomposition_declaration): Reject just
	BRACE_ENCLOSED_INITIALIZER_P initializers with nelts != 1 rather
	than all such CONSTRUCTORs, and only if is_direct_init is true.

	* g++.dg/cpp1z/decomp30.C: Add a test for structured binding with
	= {} and = { a, a } initializers.
	* g++.dg/cpp1z/decomp31.C: New test.

From-SVN: r255180

	* pt.c (primary_template_specialization_p): Rename from

	primary_template_instantiation_p.  Don't check
	DECL_TEMPLATE_INSTANTIATION.
	* call.c, cp-tree.h, decl2.c: Adjust.

From-SVN: r255179

2017-11-27  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR middle_end/82333
	* varasm.c (compare_constant): Take the mode of the constants into
	account when comparing floating point constants.

[gcc/testsuite]
2017-11-27  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR middle_end/82333
	* gcc.target/powerpc/pr82333.c: New test.

From-SVN: r255177

2017-11-27  Stephan Bergmann  <sbergman@redhat.com>

	* include/std/string_view (basic_string_view::find_first_of): Add
	missing noexcept.

From-SVN: r255176

hash-set.h (DEFINE_DEBUG_HASH_SET): Remove static qualifier from explicit instantiation of debug_helper.

	* hash-set.h (DEFINE_DEBUG_HASH_SET): Remove static qualifier
	from explicit instantiation of debug_helper.
	* vec.h (DEFINE_DEBUG_VEC): Ditto.

From-SVN: r255175

2017-11-27  Stephan Bergmann  <sbergman@redhat.com>

	* include/bits/unordered_map.h (unordered_map): Fix deduction guide.
	* include/debug/unordered_map (unordered_map): Likewise.

From-SVN: r255174

2017-11-27  Richard Biener  <rguenther@suse.de>

	* gimple-fold.c (gimple_fold_builtin_memory_op): Remove dead code,
	refactor a bit.

From-SVN: r255172

2017-11-27  Richard Biener  <rguenther@suse.de>

	* tree.c (wide_int_to_tree): Free discarded INTEGER_CST.
	(type_hash_canon): Also clear int_cst_hash_table entry for
	TYPE_MIN/MAX_VALUE.
	(build_nonstandard_integer_type): Hash all TYPE_MAX_VALUEs.

From-SVN: r255171

2017-11-27  Tamar Christina  <tamar.christina@arm.com>

	* doc/extend.texi: Add -A suffix (ARMv8*-A, ARMv7-A).
	* doc/invoke.texi: Add -A suffix (ARMv8*-A, ARMv7-A).
	* doc/sourcebuild.texi: Add -A suffix (ARMv8*-A, ARMv7-A).

From-SVN: r255169

	PR c++/81675
	* cp-gimplify.c (cp_fold) <case COND_EXPR>: Don't return immediately
	for VOID_TYPE_P COND_EXPRs, instead fold the operands and if op0 is
	INTEGER_CST, ensure that both op1 and op2 are non-NULL and fall
	through into normal folding, otherwise just rebuild x if any op
	changed.

	* g++.dg/warn/pr81675.C: New test.

From-SVN: r255167

bootstrap-ubsan shows:
  gcc/hash-map.h:277:19: runtime error: member access within null pointer of type 'struct hash_map'

Fix the issue by returning early.

From-SVN: r255166

	* cfgloop.h (struct loop): Document usage of USHRT_MAX for unroll.
	* loop-unroll.c (decide_unroll_constant_iterations): Implement it.
	(decide_unroll_runtime_iterations): Likewise.
	(decide_unroll_stupid): Likewise.

From-SVN: r255165

According to the description of  inssp instruction from Intel CET it
adusts the shadow stack pointer (ssp) only by value in the range of
[0..255]. As a number of adjustment could be greater than 255 there
should be a loop generated to adjust ssp.

gcc/
	* config/i386/i386.md: Add a loop with incssp.
	* testsuite/gcc.target/i386/cet-sjlj-1.c: Fix test.
	* testsuite/gcc.target/i386/cet-sjlj-4.c: Likewise.

From-SVN: r255164

2017-11-27  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/81248
	* tree-sra.c (splice_param_accesses): Remove size check.
	(decide_one_param_reduction): Fix size check.
	* gimple-pretty-print.c (dump_profile): Silence warning.
	* params.def (PARAM_IPA_SRA_PTR_GROWTH_FACTOR): Adjust description.

	testsuite/
	* g++.dg/ipa/pr81248.C: New test.
	* gcc.dg/tree-ssa/ssa-pre-31.c: Disable IPA-SRA.
	* gcc/testsuite/gcc.dg/ipa/ipcp-cstagg-2.c: Likewise.

From-SVN: r255163

	* g++.dg/ubsan/null-8.C (bar): New function.
	(foo): Use bar instead of __builtin_printf.

From-SVN: r255162

	PR debug/81307
	* dbxout.c (lastlineno): New variable.
	(dbx_debug_hooks): Use dbxout_switch_text_section as
	switch_text_section debug hook.
	(dbxout_function_end): Switch to current_function_section
	rather than function_section.  If crtl->has_bb_partition,
	output just one N_FUN, depending on in_cold_section_p.
	(dbxout_source_line): Remember last lineno in lastlineno.
	(dbxout_switch_text_section): New function.
	(dbxout_function_decl): Adjust dbxout_block caller.
	(dbx_block_with_cold_children): New function.
	(dbxout_block): Return true if any LBRAC/RBRAC have been
	emitted.  Use dbx_block_with_cold_children at depth == 0
	in second partition.  Add PARENT_BLOCKNUM argument, pass
	it optionally adjusted to children.  Output LBRAC/RBRAC
	around recursive call only if the block is in the current
	partition, if not and anything was output, emit empty
	range LBRAC/RBRAC.
	* final.c (final_scan_insn): Compute cold_function_name
	before calling switch_text_section debug hook.  Call
	that hook even if dwarf2out_do_frame if not emitting
	dwarf debug info.

	* g++.dg/debug/debug9.C: Remove -fno-reorder-blocks-and-partition
	workaround.

From-SVN: r255161

re PR target/83100 (powerpc: internal compiler error: in get_variable_section, at varasm.c:1150 with -fdata-sections)

	PR target/83100
	* varasm.c (bss_initializer_p): Return true for DECL_COMMON
	TREE_READONLY decls.

	* gcc.dg/pr83100-1.c: New test.
	* gcc.dg/pr83100-2.c: New test.
	* gcc.dg/pr83100-3.c: New test.
	* gcc.dg/pr83100-4.c: New test.

From-SVN: r255160

bootstrap-ubsan shows:
 gcc/expr.c:4103:17: runtime error: signed integer overflow: 0 - -9223372036854775808 cannot be represented in type 'long int'

Fix by handling the saw_unknown case earlier.

	PR rtl-optimization/82488
	* expr.c (fixup_args_size_notes): Avoid signed integer overflow.

diff --git a/gcc/expr.c b/gcc/expr.c
index ee07de5aaa44..e9d8555c9452 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -4100,10 +4100,13 @@ fixup_args_size_notes (rtx_insn *prev, rtx_insn *last, int end_args_size)
       if (STACK_GROWS_DOWNWARD)
 	this_delta = -(unsigned HOST_WIDE_INT) this_delta;

-      args_size -= this_delta;
+      if (saw_unknown)
+	args_size = INT_MIN;
+      else
+	args_size -= this_delta;
     }

-  return saw_unknown ? INT_MIN : args_size;
+  return args_size;
 }

 #ifdef PUSH_ROUNDING
--
Markus

From-SVN: r255159

From-SVN: r255158

	* config/i386/i386.c (processor_target_table): Add skylake_cost for
	skylake-avx512.
	* config/i386/x86-tune-costs.h (skylake_memcpy, skylake_memset,
	skylake_cost): New.

	* config/i386/driver-i386.c (host_detect_local_cpu):
	Detect skylake-avx512.

	* config.gcc: Add -march=cannonlake.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect cannonlake.
	* config/i386/i386-c.c (ix86_target_macros_internal): Handle cannonlake.
	* config/i386/i386.c (processor_costs): Add m_CANNONLAKE.
	(PTA_CANNONLAKE): New.
	(processor_target_table): Add cannonlake.
	(ix86_option_override_internal): Ditto.
	(fold_builtin_cpu): Ditto.
	(get_builtin_code_for_version): Handle cannonlake.
	(M_INTEL_COREI7_CANNONLAKE): New.
	* config/i386/i386.h (TARGET_CANNONLAKE, PROCESSOR_CANNONLAKE): New.
	* doc/invoke.texi: Add -march=cannonlake.

gcc/testsuite/

	* gcc.target/i386/funcspec-56.inc: Handle new march.
	* g++.dg/ext/mv16.C: Ditto.

libgcc/

	* config/i386/cpuinfo.c (get_intel_cpu): Handle cannonlake.
	* config/i386/cpuinfo.h (processor_subtypes): Add
	INTEL_COREI7_CANNONLAKE.

From-SVN: r255155

config/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

	* gcc-plugin.m4: Add support for MinGW.

gcc/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

	* plugin.c (add_new_plugin): Use platform-specific library extensions.
	(try_init_one_plugin): Alternative implementation for MinGW.
	* Makefile.in (plugin_implib): New.
	(gengtype-lex.c): Fix broken AIX workaround.
	* configure: Regenerate.
	* doc/plugins.texi: Document support for MinGW.

gcc/c/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

	* Make-lang.in (c.install-plugin): Install backend import library.

gcc/cp/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

	* Make-lang.in (c++.install-plugin): Install backend import library.

libcc1/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

	* configure: Regenerate.

From-SVN: r255154

From-SVN: r255153

	PR rtl-optimization/81553
	* combine.c (simplify_if_then_else): In (if_then_else COND (OP Z C1) Z)
	to (OP Z (mult COND (C1 * STORE_FLAG_VALUE))) optimization, if OP
	is a shift where C1 has different mode than the whole shift, use C1's
	mode for MULT rather than the shift's mode.

	* gcc.c-torture/compile/pr81553.c: New test.

From-SVN: r255150

* g++.dg/abi/structret1.C (FrameworkObject::action): Return a
value.

From-SVN: r255149

	PR target/82848
	* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Don't fold
	builtins not enabled in the currently selected ISA.

	* gcc.target/powerpc/pr82848.c: New test.

From-SVN: r255148

From-SVN: r255147

re PR fortran/81304 (Bogus warning with -Wsurprising and -fopenmp: Type specified for intrinsic function 'min' / 'max')

	PR fortran/81304
	* trans-openmp.c (gfc_trans_omp_array_reduction_or_udr): Set
	attr.implicit_type in intrinsic_sym to avoid undesirable warning.

	* testsuite/libgomp.fortran/pr81304.f90: New test.

From-SVN: r255144

This patch implements the some of the division optimizations discussed in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71026.

The division reciprocal optimization now handles divisions by squares:

     x / (y * y) -> x  * (1 / y) * (1 / y)

This requires at least one more division by y before it triggers - the
3 divisions of (1/ y) are then CSEd into a single division.  Overall
this changes 1 division into 1 multiply, which is generally much faster.


2017-11-24  Jackson Woodruff  <jackson.woodruff@arm.com>

    gcc/
	PR tree-optimization/71026
	* tree-ssa-math-opts (is_division_by_square, is_square_of): New.
	(insert_reciprocals): Change to insert reciprocals before a division
	by a square and to insert the square of a reciprocal.
	(execute_cse_reciprocals_1): Change to consider division by a square.
	(register_division_in): Add importance parameter.

    testsuite/
	PR tree-optimization/71026
	* gfortran.dg/extract_recip_1.f: New test.
	* gcc.dg/extract_recip_3.c: New test.
	* gcc.dg/extract_recip_4.c: New test.

From-SVN: r255141

2017-11-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82402
	* tree-vect-loop-manip.c (create_lcssa_for_virtual_phi): Properly
	set SSA_NAME_OCCURS_IN_ABNORMAL_PHI.

	* gcc.dg/torture/pr82402.c: New testcase.

From-SVN: r255140