2017-12-05  Eric Botcazou  <ebotcazou@adacore.com>

	* exp_ch5.adb (Expand_Iterator_Loop_Over_Array): Use the SLOC of the
	iteration scheme throughout, except for the new loop statement(s).

2017-12-05  Ed Schonberg  <schonberg@adacore.com>

	* exp_aggr.adb (Gen_Assign): Do not analyze the expressionn of the
	assignment if it is part of an Iterated_Component_Association: the
	analysis needs to take place once the loop structure is analyzed and
	the loop parameter made visible, because references to it typically
	appear in the corresponding expression.  This is necessary if the
	expression is an aggregate, because previous pre-analysis of the
	expression does not handle nested aggregates properly.

2017-12-05  Bob Duff  <duff@adacore.com>

	* sem_res.adb (Resolve_Allocator): Avoid coextension processing for an
	allocator that is the expansion of a build-in-place function call.

2017-12-05  Olivier Hainque  <hainque@adacore.com>

libgnat/
	* s-trasym__dwarf.adb (spec of Module_Name.Get): Instead of
	possibly adjusting the lookup address by a load address, expect
	a extra argument through which the load address can be conveyed
	separately.
	(Multi_Module_Symbolic_Traceback): Adjust accordingly. Pass the
	retrieved load address to Init_Module.
	* s-tsmona__linux.adb (Get): Honor the new interface.
	* s-tsmona__mingw.adb (Get): Likewise.
	* s-dwalin.ads: Adjust comments to be explicit about which
	addresses are from module info and which are run-time addresses,
	offsetted by the module load address.
	* s-dwalin.adb (Set_Load_Address): Simply set C.Load_Slide.
	Do not alter the module Low and High (relative) addresses.
	(Is_Inside): Improve documentation regarding the kinds of addresses
	at hand and correct the test.
	(Symbolic_Traceback): Use separate variables with explicit names
	for the address in traceback (run-time value) and the address to
	lookup within the shared object (module-relative). Adjust the
	computation of address passed to Symbolic_Address for symbolization.

From-SVN: r255411

2017-12-05  Arnaud Charlet  <charlet@adacore.com>

	* opt.ads (Expand_Nonbinary_Modular_Ops): New flag.
	* exp_ch4.adb (Expand_Nonbinary_Modular_Op): Use
	Expand_Nonbinary_Modular_Ops instead of Modify_Tree_For_C, so that
	other back-ends can also benefit from the front-end expansion. Remove
	test for Modify_Tree_For_C in all callers to better share code.
	* gnat1drv.adb (Adjust_Global_Switches): Set
	Expand_Nonbinary_Modular_Ops when generating C code.

2017-12-05  Ed Schonberg  <schonberg@adacore.com>

	* exp_ch5.adb (Expand_Formal_Container_Loop): Ensure that the loop
	parameter becomes invisible after analyzing the loop, which has been
	rewritten as a while-loop.

2017-12-05  Doug Rupp  <rupp@adacore.com>

	* vxaddr2line.adb: Revise and enhance for new ports, remove dead ports,
	and update for 64bit ports.

From-SVN: r255410

2017-12-05  Bob Duff  <duff@adacore.com>

	* exp_ch6.adb (Build_In_Place_Formal): Search for the formal by suffix
	instead of the full name.
	* sem_ch6.adb (Create_Extra_Formals): Make sure there are extra formals
	in the case of an instance of a generic.

2017-12-05  Arnaud Charlet  <charlet@adacore.com>

	(Adjust_Global_Switches): Create an alias GNAT_Annotate to map to
	pragma Annotate.

From-SVN: r255409

Without this definition I got the following error:

<...>/xgcc <...>  -c -g -O2   -W -Wall -gnatpg -nostdinc  -g -fno-inline \
      -fno-toplevel-reorder -O1  a-except.adb -o a-except.o
a-exexpr.adb:38:06: "System.Exceptions.Machine" is not a predefined library unit
a-exexpr.adb:38:06: "Ada.Exceptions (body)" depends on "Ada.Exceptions.Exception_Propagation (body)"
a-exexpr.adb:38:06: "Ada.Exceptions.Exception_Propagation (body)" depends on "System.Exceptions.Machine (spec)"
../gcc-interface/Makefile:2661: recipe for target 'a-except.o' failed

gcc/ada

	* gcc-interface/Makefile.in (RTEMS): Define EH_MECHANISM.

From-SVN: r255408

	* dbxout.c (dbxout_block): Grow buf to 30 bytes.

From-SVN: r255406

gcc/
	* doc/invoke.texi: Document the options.
	* flag-types.h (enum sanitize_code): Add
	SANITIZE_POINTER_COMPARE and SANITIZE_POINTER_SUBTRACT.
	* ipa-inline.c (sanitize_attrs_match_for_inline_p): Add handling
	of SANITIZE_POINTER_COMPARE and SANITIZE_POINTER_SUBTRACT.
	* opts.c: Define new sanitizer options.
	* sanitizer.def (BUILT_IN_ASAN_POINTER_COMPARE): Likewise.
	(BUILT_IN_ASAN_POINTER_SUBTRACT): Likewise.
gcc/c/
	* c-typeck.c (pointer_diff): Add new argument and instrument
	pointer subtraction.
	(build_binary_op): Similar for pointer comparison.
gcc/cp/
	* typeck.c (pointer_diff): Add new argument and instrument
	pointer subtraction.
	(cp_build_binary_op): Create compound expression if doing an
	instrumentation.
gcc/testsuite/
	* c-c++-common/asan/pointer-compare-1.c: New test.
	* c-c++-common/asan/pointer-compare-2.c: New test.
	* c-c++-common/asan/pointer-subtract-1.c: New test.
	* c-c++-common/asan/pointer-subtract-2.c: New test.
	* c-c++-common/asan/pointer-subtract-3.c: New test.
	* c-c++-common/asan/pointer-subtract-4.c: New test.
libsanitizer/
	* asan/asan_descriptions.cc: Cherry-pick upstream r319668.
	* asan/asan_descriptions.h: Likewise.
	* asan/asan_report.cc: Likewise.
	* asan/asan_thread.cc: Likewise.
	* asan/asan_thread.h: Likewise.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r255404

cp-gimplify.c (cp_maybe_instrument_return): Don't add __builtin_unreachable if -O0 or if -fsanitize=unreachable.

	* cp-gimplify.c (cp_maybe_instrument_return): Don't add
	__builtin_unreachable if -O0 or if -fsanitize=unreachable.

	* g++.dg/missing-return.C: Add -O to dg-options.

From-SVN: r255403

gcc/
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512VNNI_SET,
	OPTION_MASK_ISA_AVX512VNNI_UNSET): New.
	(ix86_handle_option): Handle -mavx512vnni.
	* config/i386/cpuid.h (bit_AVX512VNNI): New bit.
	* config/i386/driver-i386.c (host_detect_local_cpu): Handle new bit.
	* config/i386/i386-c (__AVX512VNNI__): New.
	* config/i386/i386.c (ix86_target_string): Handle new option.
	(ix86_valid_target_attribute_inner_p): Handle new option.
	* config/i386/i386.h (TARGET_AVX512VNNI, TARGET_AVX512VNNI_P): New.
	* config/i386/i386.opt (mavx512vnni): New option.

From-SVN: r255401

    
    Add the "no nil check needed" annotation to the dereference operations
    created in Parse::enclosing_var_reference (this is safe since the
    closure object is under control of the compiler, and pointer fields in
    it will always be non-nil).
    
    Reviewed-on: https://go-review.googlesource.com/81795

From-SVN: r255400

2017-12-04  Steve Ellcey  <sellcey@cavium.com>

	* Makefile.am (ARCH_AARCH64_LINUX): Add IFUNC_OPTIONS and
	libatomic_la_LIBADD.
	* config/linux/aarch64/host-config.h: New file.
	* configure.ac (IFUNC_RESOLVER_ARGS): Define.
	(ARCH_AARCH64_LINUX): New conditional for IFUNC builds.
	* configure.tgt (aarch64): Set ARCH and try_ifunc.
	(aarch64*-*-linux*) Update config_path.
	(aarch64*-*-linux*) Set IFUNC_RESOLVER_ARGS.
	* libatomic_i.h (GEN_SELECTOR): Add IFUNC_RESOLVER_ARGS argument.
	* Makefile.in: Regenerate.
	* auto-config.h.in: Regenerate.
	* configure: Regenerate.

From-SVN: r255399

From-SVN: r255398

	PR target/81616
	* athlon.md: Disable for generic.
	* haswell.md: Enable for generic.
	* i386.c (ix86_sched_init_global): Add core hooks for generic.
	* x86-tune-sched.c (ix86_issue_rate): Increase issue rate for generic
	to 4.
	(ix86_adjust_cost): Move generic to haswell path.

From-SVN: r255395

	* config/sparc/sparc.c (sparc_do_work_around_errata): Use mem_ref
	instead of MEM_P in a couple more places.  Fix formatting issues.

From-SVN: r255393

	* include/bits/regex_compiler.tcc: Use C-style comment to work around
	PR preprocessor/61638.
	(__INSERT_REGEX_MATCHER): Replace GNU extension with __VA_ARGS__.

From-SVN: r255392

	* config/io/basic_file_stdio.h (__basic_file): Remove name of unused
	parameter.
	* include/bits/boost_concept_check.h: Add pragmas to disable
	-Wunused-local-typedef warnings.
	* include/bits/codecvt.h (codecvt_byname<char16_t, char, mbstate_t>)
	(codecvt_byname<char32_t, char, mbstate_t>): Remove name of unused
	parameter.
	* include/bits/locale_facets_nonio.tcc (time_get::do_get_weekday)
	(time_get::do_get_monthname, time_get::do_get_year): Remove unused
	variables.
	* include/std/bitset (_Base_bitset<0>::_M_getword): Remove name of
	unused parameter.
	* include/std/streambuf (_IsUnused): Define.
	(basic_streambuf::imbue, basic_streambuf::pbackfail)
	(basic_streambuf::overflow): Add macro to unused parameters.
	* testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error.

From-SVN: r255391

	* semantics.c (finish_if_stmt_cond): Use require_constant_expression
	rather than is_constant_expression.
	* constexpr.c (potential_constant_expression_1) [LAMBDA_EXPR]: Allow
	in C++17.

From-SVN: r255390

	gcc/
	* config/riscv/riscv.c (riscv_for_each_saved_reg): Use GP_REG_LAST
	instead of GP_REG_LAST-1.
	(riscv_adjust_libcall_cfi_prologue): Likewise.
	(riscv_adjust_libcall_cri_epilogue): Likewise.
	* config/riscv/riscv.h (CALL_USED_REGISTERS): Change a6 to t6 in
	comment.

From-SVN: r255389

I noticed the debugging output from local-pure-const pass is missing a
newline in a couple places, leading to this:

 local analysis of main
   scanning: i ={v} 0;
    Volatile stmt is not const/pure
    Volatile operand is not const/pure  scanning: j ={v} 20;
    Volatile stmt is not const/pure
    Volatile operand is not const/pure  scanning: vol.0_10 ={v} i;
    Volatile stmt is not const/pure

It should've been:

 local analysis of main
   scanning: i ={v} 0;
    Volatile stmt is not const/pure
    Volatile operand is not const/pure
   scanning: j ={v} 20;
    Volatile stmt is not const/pure
    Volatile operand is not const/pure
   scanning: vol.0_10 ={v} i;
    Volatile stmt is not const/pure

gcc/ChangeLog:

2017-12-04  Luis Machado  <luis.machado@linaro.org>

	* ipa-pure-const.c (check_decl): Add missing newline.
	(state_from_flags): Likewise.

From-SVN: r255388

	PR tree-optimizatin/78496
	* gimple-ssa-evrp-analyze.h
	(evrp_range_analyzer::get_vr_values): Simplify.
	* gimple-ssa-evrp-analyze.c: Corresponding changes.
	* tree-ssa-dom.c: Include alloc-pool.h, tree-vrp.h, vr-values.h
	and gimple-ssa-evrp-analyze.h.
	(dom_opt_dom_walker class): Add evrp_range_analyzer member.
	(simplify_stmt_for_jump_threading): Copy a blob of code from
	tree-vrp.c to use ranges to simplify statements.
	(dom_opt_dom_walker::before_dom_children): Call
	evrp_range_analyzer::{enter,record_ranges_from_stmt} methods.
	(dom_opt_dom_walker::after_dom_children): Similarly for
	evrp_range_analyzer::leave.
	(dom_opt_dom_walker::optimize_stmt): Use EVRP ranges to optimize
	conditionals.

	PR tree-optimization/78496
	* gcc.dg/builtin-unreachable-6.c: Disable DOM.
	* gcc.dg/builtin-unreachable-6a.c: New test.
	* gcc.dg/tree-ssa/20030922-1.c: No longer XFAIL.
	* gcc.dg/ssa-dom-branch-1.c: Tweak expected output.

From-SVN: r255387

	(evrp_range_analyzer::extract_range_from_stmt):  Always use
	vr_values::update_value_range so preexisting range info is
	medged with new range info, even if the new range is VR_VARYING.

From-SVN: r255386

This removes use_crosses_set_p, and uses modified_between_p instead
everywhere it was used.  This improves optimisation.


	* combine.c: Adjust comment.
	(use_crosses_set_p): Delete.
	(can_combine_p): Use modified_between_p instead of use_crosses_set_p.
	(try_combine): Ditto.

From-SVN: r255384

2017-12-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83255
	* graphite-isl-ast-to-gimple.c (translate_isl_ast_node_for):
	Re-add zero-iteration check.

	* gcc.dg/graphite/pr83255.c: New testcase.

From-SVN: r255382

The Newlib time_t has now 64 bits for RTEMS.

gcc/ada

	* gcc-interface/Makefile.in (RTEMS): Use s-osprim__rtems.adb.
	* libgnat/s-osprim__rtems.adb: New file.
	* libgnarl/s-osinte__rtems.adb (pthread_cond_t): Fix alignment.
	(pthread_mutexattr_t): Likewise.
	(pthread_rwlockattr_t): Likewise.
	(pthread_rwlock_t): Likewise.
	(time_t): Use 64-bit integer.

From-SVN: r255380

The documentation (rtl.texi) says:

  When a @code{clobber} expression for a register appears inside a
  @code{parallel} with other side effects, the register allocator
  guarantees that the register is unoccupied both before and after that
  insn if it is a hard register clobber.

and at least the rs6000 backend relies on that (see PR83245).  This
patch restores that behaviour.

Registers that are also used as operands in the instruction are not
treated as earlyclobber, so such insns also still work (PR80818, an
s390 testcase).


	PR rtl-optimization/83245
	* lra.c (collect_non_operand_hard_regs): Treat clobbers of non-operand
	hard registers as earlyclobber, also if not in an asm.

From-SVN: r255377

	PR bootstrap/83265
	Revert
	2017-12-01  Segher Boessenkool  <segher@kernel.crashing.org>

	PR target/43871
	* config/rs6000/rs6000.c (rs6000_option_override_internal): Set
	rs6000_cpu based on cpu_index, not tune_index.

From-SVN: r255376

re PR tree-optimization/83238 ([graphite] ICE in graphite_can_represent_scev, at graphite-scop-detection.c:971)

2017-12-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83238
	* graphite-scop-detection.c (scop_detection::merge_sese): Make
	code match comment, rejecting invalid SESE regions.

	* gcc.dg/graphite/pr83238.c: New testcase.

From-SVN: r255375

2017-12-04  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/pr82875.c: Require effective target alloca.

From-SVN: r255374

From-SVN: r255372

	* config/pa/pa.c (pa_legitimate_address_p): For scaled indexing,
	require base operand is a REG_POINTER prior to reload on targets
	with non-equivalent space registers.

From-SVN: r255369

2017-12-03  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/36313
	* check.c (gfc_check_minval_maxval): Use
	int_orLreal_or_char_check_f2003 for array argument.
	* iresolve.c (gfc_resolve_maxval): Insert number in
	function name for character arguments.
	(gfc_resolve_minval): Likewise.
	* trans-intrinsic.c (gfc_conv_intrinsic_minmaxloc):
	Fix comment.
	(gfc_conv_intrinsic_minmaxval): Resort arguments and call library
	function if dealing with a character function.

2017-12-03  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/36313
	* Makefile.am: Add new files for character-valued
	maxval and minval.
	* Makefile.in: Regenerated.
	* gfortran.map: Add new functions.
	* m4/iforeach-s2.m4: New file.
	* m4/ifunction-s2.m4: New file.
	* m4/iparm.m4: Add intitval for minval and maxval.
	* m4/maxval0s.m4: New file.
	* m4/maxval1s.m4: New file.
	* m4/minval0s.m4: New file.
	* m4/minval1s.m4: New file.
        * generated/maxval0_s1.c: New file.
        * generated/maxval0_s4.c: New file.
        * generated/maxval1_s1.c: New file.
        * generated/maxval1_s4.c: New file.
        * generated/minval0_s1.c: New file.
        * generated/minval0_s4.c: New file.
        * generated/minval1_s1.c: New file.
        * generated/minval1_s4.c: New file.

2017-12-03  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/36313
	* gfortran.dg/maxval_char_1.f90: New test.
	* gfortran.dg/maxval_char_2.f90: New test.
	* gfortran.dg/maxval_char_3.f90: New test.
	* gfortran.dg/maxval_char_4.f90: New test.
	* gfortran.dg/minval_char_1.f90: New test.
	* gfortran.dg/minval_char_2.f90: New test.
	* gfortran.dg/minval_char_3.f90: New test.
	* gfortran.dg/minval_char_4.f90: New test.

From-SVN: r255367

From-SVN: r255366

2017-12-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
            Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR libgfortran/83191
        * io/transfer.c (list_formatted_read_scalar): Do not set
        namelist_mode bit here. (namelist_read): Likewise.
        (data_transfer_init): Clear the mode bit here.
        (finalize_transfer): Do set the mode bit just before any calls
        to namelist_read or namelist_write. It can now be referred to
        in complex_write.
        ^ io/write.c (write_complex): Suppress the leading blanks when
        namelist_mode bit is not set to 1.

        * gfortran.dg/namelist_95.f90: New test.

Co-Authored-By: Dominique d'Humieres <dominiq@lps.ens.fr>

From-SVN: r255365

From-SVN: r255363

2017-12-02  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/83225
	* io/io.h (is_internal_unit): Use the unit_is_internal bit.
	* io/transfer.c (data_transfer_init): Set the bit to true for
	internal umits. Use that bit for checks for internal unit
	initializations.
	* io/unit.c (insert_unit): As a precaution, set the
	internal_unit_kind to zero when a unit structure is first created.

From-SVN: r255362

From-SVN: r255361

	* ipa-cp.c (ipcp_lattice<valtype>::print): Update dumping.
	(update_specialized_profile): Fix updating of counts.
	(perhaps_add_new_callers): Likewise.

From-SVN: r255358

	PR target/81616
	* x86-tune.def: Remove obsolette FIXMEs.
	(X86_TUNE_PARTIAL_FLAG_REG_STALL): Disable for generic
	(X86_TUNE_FUSE_CMP_AND_BRANCH_32, X86_TUNE_FUSE_CMP_AND_BRANCH_64,
	X86_TUNE_FUSE_CMP_AND_BRANCH_SOFLAGS, X86_TUNE_FUSE_ALU_AND_BRANCH):
	Enable for generic.
	(X86_TUNE_PAD_RETURNS): Disable for generic.
	* gcc.target/i386/pad-1.c: Compile for amdfam10.
	* gcc.target/i386/align-limit.c: Likewise.

From-SVN: r255357

	PR tree-optimization/83170
	PR tree-optimization/83241
	* gimple-ssa-store-merging.c
	(imm_store_chain_info::try_coalesce_bswap): Update vuse field from
	gimple_vuse (ins_stmt) in case it has changed.
	(imm_store_chain_info::output_merged_store): Likewise.

	* gcc.dg/store_merging_17.c: New test.

From-SVN: r255356

	* tree-chkp.c (chkp_compute_bounds_for_assignment): Handle
	POINTER_DIFF_EXPR.

	* gcc.target/i386/mpx/pointer-diff-1.c: New test.

From-SVN: r255355

	PR c++/81212
	* tree-cfg.c (pass_warn_function_return::execute): Handle
	__builtin_ubsan_handle_missing_return like __builtin_unreachable
	with BUILTINS_LOCATION.

	* g++.dg/ubsan/pr81212.C: New test.
	* g++.dg/ubsan/return-1.C: Add -Wno-return-type to dg-options.
	* g++.dg/ubsan/return-2.C: Likewise.
	* g++.dg/ubsan/return-7.C: Likewise.

From-SVN: r255354