Turn SECONDARY_MEMORY_NEEDED_MODE into a target hook

This includes a change to LRA.  Previously the code was:

    if (sclass == NO_REGS && dclass == NO_REGS)
      return false;
  #ifdef SECONDARY_MEMORY_NEEDED
    if (SECONDARY_MEMORY_NEEDED (sclass, dclass, GET_MODE (src))
  #ifdef SECONDARY_MEMORY_NEEDED_MODE
        && ((sclass != NO_REGS && dclass != NO_REGS)
            || GET_MODE (src) != SECONDARY_MEMORY_NEEDED_MODE (GET_MODE (src)))
  #endif
        )
      {
        *sec_mem_p = true;
        return false;
      }
  #endif

in which the positioning of the second ifdef meant that defining
SECONDARY_MEMORY_NEEDED_MODE to its default value was not a no-op:
without a definition, we would consider using secondary reloads for
mem<-reg and reg<-mem reloads even if the secondary memory has the
same mode as the original mem, while defining it would avoid this.
The latter behaviour seems correct.

The default is different for reload and LRA.  For LRA the default is
to use the original mode, while reload promotes smaller-than-word
integral modes to word mode:

  if (GET_MODE_BITSIZE (mode) < BITS_PER_WORD && INTEGRAL_MODE_P (mode))
    mode = mode_for_size (BITS_PER_WORD,
                          GET_MODE_CLASS (mode), 0).require ();

Some of the ports that have switched to LRA seemed to have
SECONDARY_MEMORY_NEEDED_MDOEs based on the old reload definition,
and still referred to the reload.c:get_secondary_mem function in
the comments.  The patch just keeps them as-is.

2017-09-13  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* target.def (secondary_memory_needed_mode): New hook:
* targhooks.c (default_secondary_memory_needed_mode): Declare.
* targhooks.h (default_secondary_memory_needed_mode): New function.
* doc/tm.texi.in (SECONDARY_MEMORY_NEEDED_MODE): Replace with...
(TARGET_SECONDARY_MEMORY_NEEDED_MODE): ...this.
* doc/tm.texi: Regenerate.
* lra-constraints.c (check_and_process_move): Use
targetm.secondary_memory_needed_mode instead of
TARGET_SECONDARY_MEMORY_NEEDED_MODE.
(curr_insn_transform): Likewise.
* reload.c (get_secondary_mem): Likewise.
* config/alpha/alpha.h (SECONDARY_MEMORY_NEEDED_MODE): Delete.
* config/alpha/alpha.c (alpha_secondary_memory_needed_mode): New
function.
(TARGET_SECONDARY_MEMORY_NEEDED_MODE): Redefine.
* config/i386/i386.h (SECONDARY_MEMORY_NEEDED_MODE): Delete.
* config/i386/i386.c (ix86_secondary_memory_needed_mode): New function.
(TARGET_SECONDARY_MEMORY_NEEDED_MODE): Redefine.
* config/powerpcspe/powerpcspe.h (SECONDARY_MEMORY_NEEDED_MODE):
Delete.
* config/powerpcspe/powerpcspe-protos.h
(rs6000_secondary_memory_needed_mode): Delete.
* config/powerpcspe/powerpcspe.c
(TARGET_SECONDARY_MEMORY_NEEDED_MODE): Redefine.
(rs6000_secondary_memory_needed_mode): Make static.
* config/rs6000/rs6000.h (SECONDARY_MEMORY_NEEDED_MODE): Delete.
* config/rs6000/rs6000-protos.h (rs6000_secondary_memory_needed_mode):
Delete.
* config/rs6000/rs6000.c (TARGET_SECONDARY_MEMORY_NEEDED_MODE):
Redefine.
(rs6000_secondary_memory_needed_mode): Make static.
* config/s390/s390.h (SECONDARY_MEMORY_NEEDED_MODE): Delete.
* config/s390/s390.c (s390_secondary_memory_needed_mode): New function.
(TARGET_SECONDARY_MEMORY_NEEDED_MODE): Redefine.
* config/sparc/sparc.h (SECONDARY_MEMORY_NEEDED_MODE): Delete.
* config/sparc/sparc.c (TARGET_SECONDARY_MEMORY_NEEDED_MODE):
Redefine.
(sparc_secondary_memory_needed_mode): New function.
* system.h (TARGET_SECONDARY_MEMORY_NEEDED_MODE): Poison.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r252455

[AArch64, PATCH] Improve Neon store of zero

Committed on behalf of Jackson Woodruff.

---
gcc/

* config/aarch64/constraints.md (Umq): New constraint.
* config/aarch64/aarch64-simd.md (*aarch64_simd_mov<mode>):
Change to use Umq.
(mov<mode>): Update condition.

gcc/testsuite/

* gcc.target/aarch64/simd/vect_str_zero.c: Update testcase.

From-SVN: r252387

re PR c/82167 (Segmentation fault when dereferencing the address of an array argument)

PR c/82167
* c-typeck.c (c_expr_sizeof_expr): Use the type of expr.value rather
than expr.original_type.

* gcc.dg/pr82167.c: New test.

From-SVN: r252372

* MAINTAINERS: Remove email address of Jim Norris.

From-SVN: r252218

fold-vec-ld-char.c: New.

[gcc/testsuite]

2017-09-12  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * gcc.target/powerpc/fold-vec-ld-char.c: New.
        * gcc.target/powerpc/fold-vec-ld-double.c: New.
        * gcc.target/powerpc/fold-vec-ld-float.c: New.
        * gcc.target/powerpc/fold-vec-ld-int.c: New.
        * gcc.target/powerpc/fold-vec-ld-longlong.c: New.
        * gcc.target/powerpc/fold-vec-ld-short.c: New.

From-SVN: r252087

[Aarch64, Patch] Update failing testcase pr62178.c

This patch changes pr62178.c so that it now scans
for two `ldr`s, one into an `s` register, instead
of a `ld1r` as before. Also add a scan for an mla
instruction.

The `ld1r` was needed when this should have generated
a mla by vector. Now that we can generate an mla by
element instruction and can load directly into the
simd register, it is cheaper to not do the ld1r
which needlessly duplicates the single element used
across the whole vector register.

Committed on behalf of Jackson Woodruff

gcc/testsuite/

* gcc.target/aarch64/pr62178.c: Updated testcase
to scan for two ldrs and an mla.

From-SVN: r252086

PR libstdc++/81468 constrain std::chrono::time_point constructor

PR libstdc++/81468
* include/std/chrono (__enable_if_is_duration)
(__disable_if_is_duration): New alias templates to simplify SFINAE.
(duration_cast, floor, ceil): Use __enable_if_is_duration.
(duration::__is_float, duration::__is_harmonic): New alias templates
to simplify SFINAE.
(duration::duration(const _Rep2&)): Use _Require, __is_float and
__is_harmonic.
(duration::duration(const duration<_Rep2, _Period2>&)): Likewise.
(__common_rep_type): Remove, replace with ...
(__common_rep_t): New alias template.
(operator*, operator/, operator%): Use __common_rep_t and
__disable_if_is_duration.
(time_point::time_point(const time_point<clock, _Dur2>&)): Add missing
constraint from LWG DR 1177.
* testsuite/20_util/duration/cons/dr1177.cc: New.
* testsuite/20_util/duration/literals/range.cc: Update dg-error line.
* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
* testsuite/20_util/time_point/cons/81468.cc: New.

From-SVN: r252085

[store-merging] Use store order as tie-breaker in sort_by_bitpos

As Alexander pointed out in the thread starting at [1] the sort_by_bitpos sorting function
was behaving badly when we had multiple stores at the same position.  He fixed that (thanks!)
but we can do better by not returning zero when the bitpositions are equal but by falling back
to comparing the order the stores appear in, which is guaranteed to be unique (barring other
bugs elsewhere).

This patch does that.

Bootstrapped and tested on aarch64-none-linux-gnu.

[1] https://gcc.gnu.org/ml/gcc-patches/2017-07/msg00895.html

* gimple-ssa-store-merging.c (sort_by_bitpos): Compare store order
when bitposition is the same.

From-SVN: r252084

Make-lang.in: In the fallback mechanim...

2017-09-13  Nicolas Roche  <roche@adacore.com>

* Make-lang.in: In the fallback mechanim, parse the associated .ali
file and try to guess the locations of dependencies.

From-SVN: r252082

Conv-op identifers not in identifier hash table

Conv-op identifers not in identifier hash table
* lex.c (conv_type_hasher): Make member fns inline.
(make_conv_op_name): Directly clone conv_op_identifier.

From-SVN: r252081

re PR c++/59949 (lambda expression as default argument of function template causes "already defined" messages in assembler)

2017-09-13  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/59949
* g++.dg/cpp0x/lambda/lambda-defarg7.C: New.

From-SVN: r252079

Rename CLASSTYPE_METHOD_VEC to CLASSTYPE_MEMBER_VEC.

* cp-tree.h (struct lang_type): Rename methods to members.
(CLASSTYPE_METHOD_VEC): Rename to ...
(CLASSTYPE_MEMBER_VEC): ... this.
* name-lookup.h (get_method_slot): Rename to ...
(get_member_slot): ... this.
(resort_type_method_vec): Rename to ...
(resort_type_member_vec): ... this.
* class.c (add_method, warn_hidden): Adjust.
* search.c (dfs_locate_field_accessor_pre): Adjust.
* name-lookup.c (method_vec_binary_search): Rename to ...
(member_vec_binary_search): ... this and adjust.
(method_vec_linear_search): Rename to ...
(member_vec_linear_search): ... this and adjust.
(fields_linear_search, get_class_binding_direct): Adjust.
(get_method_slot): Rename to ...
(get_member_slot): ... this and adjust.
(method_name_slot): Rename to ...
(member_name_slot): ... this and adjust.
(resort_type_method_vec): Rename to ...
(resort_type_member_vec): ... this and adjust.
(method_vec_append_class_fields): Rename to ...
(member_vec_append_class_fields): ... this and adjust.
(method_vec_append_enum_values): Rename to ...
(member_vec_append_enum_values): ... this and adjust.
(method_vec_dedup): Rename to ...
(member_vec_dedup): ... this and adjust.
(set_class_bindings, insert_late_enum_def_bindings): Adjust.

From-SVN: r252078

Update aarch64/vmov_n_1.c

Update vmov_n_1.c now we are generating better code for dup:

        ldr     s0, [x0]
        dup     v0.2s, v0.s[0]
        ret

    gcc/testsuite/
* gcc.target/aarch64/vmov_n_1.c: Update dup scan-assembler.

From-SVN: r252077

[multiple changes]

2017-09-13  Eric Botcazou  <ebotcazou@adacore.com>

* sem_ch13.adb (Register_Address_Clause_Check): New procedure to save
the suppression status of Alignment_Check on the current scope.
(Alignment_Checks_Suppressed): New function to use the saved instead of
the current suppression status of Alignment_Check.
(Address_Clause_Check_Record): Add Alignment_Checks_Suppressed field.
(Analyze_Attribute_Definition_Clause): Instead of manually appending to
the table, call Register_Address_Clause_Check.
(Validate_Address_Clauses): Call Alignment_Checks_Suppressed on the
recorded address clause instead of its entity.

2017-09-13  Jerome Guitton  <guitton@adacore.com>

* libgnarl/s-tpopsp__vxworks-tls.adb,
libgnarl/s-tpopsp__vxworks-rtp.adb, libgnarl/s-tpopsp__vxworks.adb
(Self): Register thread if task id is null.

2017-09-13  Arnaud Charlet  <charlet@adacore.com>

* libgnat/s-htable.adb, libgnat/s-htable.ads: Minor style tuning.

2017-09-13  Arnaud Charlet  <charlet@adacore.com>

* lib-xref-spark_specific.adb (Scopes): simplify hash map; now it maps
from an entity to only scope index, as a mapping from an entity to the
same entity was useless.
(Get_Scope_Num): refactor as a simple renaming; rename parameter from N
to E.
(Set_Scope_Num): refactor as a simple renaming; rename parameter from N
to E.
(Is_Constant_Object_Without_Variable_Input): remove local "Result"
variable, just use return statements.

From-SVN: r252076

s-vxwext__kernel-smp.adb, [...]: New file.

* libgnarl/s-vxwext__kernel-smp.adb,
libgnarl/s-tpopsp__vxworks-rtp.adb, libgnarl/s-vxwext__noints.adb:
New file.

From-SVN: r252075

[testsuite/ARM] Fix coprocessor intrinsic test failures on ARMv8-A

Coprocessor intrinsic tests in gcc.target/arm/acle test whether
__ARM_FEATURE_COPROC has the right bit defined before calling the
intrinsic. This allows to test both the correct setting of that macro
and the availability and correct working of the intrinsic. However the
__ARM_FEATURE_COPROC macro is no longer defined for ARMv8-A since
r249399.

This patch changes the testcases to skip that test for ARMv8-A and
ARMv8-R targets.  It also fixes some irregularity in the coprocessor
effective targets:
- add ldcl and stcl to the list of instructions listed as guarded by
  arm_coproc1_ok
- enable tests guarded by arm_coproc2_ok, arm_coproc3_ok and
  arm_coproc4_ok for Thumb-2 capable targets but disable for Thumb-1
  targets.

2017-09-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/testsuite/
    * gcc.target/arm/acle/cdp.c: Skip __ARM_FEATURE_COPROC check for
    ARMv8-A and ARMv8-R.
    * gcc.target/arm/acle/cdp2.c: Likewise.
    * gcc.target/arm/acle/ldc.c: Likewise.
    * gcc.target/arm/acle/ldc2.c: Likewise.
    * gcc.target/arm/acle/ldc2l.c: Likewise.
    * gcc.target/arm/acle/ldcl.c: Likewise.
    * gcc.target/arm/acle/mcr.c: Likewise.
    * gcc.target/arm/acle/mcr2.c: Likewise.
    * gcc.target/arm/acle/mcrr.c: Likewise.
    * gcc.target/arm/acle/mcrr2.c: Likewise.
    * gcc.target/arm/acle/mrc.c: Likewise.
    * gcc.target/arm/acle/mrc2.c: Likewise.
    * gcc.target/arm/acle/mrrc.c: Likewise.
    * gcc.target/arm/acle/mrrc2.c: Likewise.
    * gcc.target/arm/acle/stc.c: Likewise.
    * gcc.target/arm/acle/stc2.c: Likewise.
    * gcc.target/arm/acle/stc2l.c: Likewise.
    * gcc.target/arm/acle/stcl.c: Likewise.
    * lib/target-supports.exp:
    (check_effective_target_arm_coproc1_ok_nocache): Mention ldcl
    and stcl in the comment.
    (check_effective_target_arm_coproc2_ok_nocache): Allow Thumb-2 targets
    and disable Thumb-1 targets.
    (check_effective_target_arm_coproc3_ok_nocache): Likewise.
    (check_effective_target_arm_coproc4_ok_nocache): Likewise.

Acked-by: Kyrill Tkachov <kyrylo.tkachov@foss.arm.com>
From-SVN: r252074

Fix broken URLs in libstdc++ API docs

* doc/doxygen/mainpage.html: Fix broken URLs.

From-SVN: r252070

PR libstdc++/81835 fix broken URLs in libstdc++ docs

PR libstdc++/81835
* doc/xml/manual/extensions.xml: Replace unstable URL.
* doc/html/manual/ext_demangling.html: Regenerate.
* libsupc++/cxxabi.h (__cxa_demangle): Fix broken URL.

From-SVN: r252066

[multiple changes]

2017-09-13  Hristian Kirtchev  <kirtchev@adacore.com>

* einfo.adb: Flag42 is now Is_Controlled_Active.
(Is_Controlled): This attribute is now synthesized.
(Is_Controlled_Active): This attribute is now an explicit flag rather
than a synthesized attribute. (Set_Is_Controlled): Removed.
(Set_Is_Controlled_Active): New routine.
(Write_Entity_Flags): Update the output for Flag42.
* einfo.ads: Update the documentation of the following attributes:
Disable_Controlled, Is_Controlled, Is_Controlled_Active, Is_Controlled
and Is_Controlled_Active have swapped their functionality.
(Is_Controlled): Renamed to Is_Controlled_Active.
(Is_Controlled_Active): Renamed to Is_Controlled.
(Set_Is_Controlled): Renamed to Set_Is_Controlled_Active.
* exp_ch3.adb (Expand_Freeze_Record_Type): Restore the original use of
Is_Controlled.
* exp_util.adb (Has_Some_Controlled_Component): Code clean up.
(Needs_Finalization): Code clean up. Remove the tests for
Disable_Controlled because a) they were incorrect as they would reject
a type which is sublect to the aspect, but may contain controlled
components, and b) they are no longer necessary.
* exp_util.ads (Needs_Finalization): Update comment on documentation.
* freeze.adb (Freeze_Array_Type): Restore the original use of
Is_Controlled.
(Freeze_Record_Type): Restore the original use of Is_Controlled.
* sem_ch3.adb (Analyze_Object_Declaration): Restore the original use of
Is_Controlled.
(Array_Type_Declaration): Restore the original use of Is_Controlled.
(Build_Derived_Private_Type): Restore the original use of
Is_Controlled.
(Build_Derived_Record_Type): Set the Is_Controlled_Active flag of a
type derived from Ada.Finalization.[Limited_]Controlled.
(Build_Derived_Type): Restore the original use of Is_Controlled.
(Record_Type_Definition): Restore the original use of Is_Controlled.
* sem_ch7.adb (Preserve_Full_Attributes): Restore the original use of
Is_Controlled.
* sem_ch13.adb (Analyze_Aspect_Disable_Controlled): New routine.
(Analyze_Aspect_Specifications): Use routine
Analyze_Aspect_Disable_Controlled to process aspect Disable_Controlled.

2017-09-13  Vincent Celier  <celier@adacore.com>

* clean.adb (Gnatclean): Fix error when looking for target
of <target>-gnatclean

2017-09-13  Javier Miranda  <miranda@adacore.com>
            Ed Schonberg  <schonberg@adacore.com>

* sem_ch8.adb (Find_Expanded_Name): Complete code that identifies an
expanded name that designates the current instance of a child unit in
its own body and appears as the prefix of a reference to an entity
local to the child unit.

From-SVN: r252065

re PR c++/47226 ([C++0x] GCC doesn't expand template parameter pack that appears in a lambda-expression)

2017-09-13  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/47226
* g++.dg/cpp0x/lambda/lambda-variadic4.C: New.
* g++.dg/cpp0x/lambda/lambda-variadic5.C: Likewise.

From-SVN: r252064

dwarf2out.c (output_die_symbol): Remove.

2017-09-13  Richard Biener  <rguenther@suse.de>

* dwarf2out.c (output_die_symbol): Remove.
(output_die): Do not output a DIEs symbol.

From-SVN: r252063

re PR tree-optimization/82128 (ICE on valid code)

2017-09-13  Richard Biener  <rguenther@suse.de>

PR middle-end/82128
* gimple-fold.c (gimple_fold_call): Update SSA name in-place to
default-def to avoid breaking iterator update with the weird
interaction with cgraph_update_edges_for_call_stmt_node.

* g++.dg/pr82128.C: New testcase.

From-SVN: r252062

tree-cfg.c (verify_gimple_assign_binary): Add verification for WIDEN_SUM_EXPR...

2017-09-13  Richard Biener  <rguenther@suse.de>

* tree-cfg.c (verify_gimple_assign_binary): Add verification
for WIDEN_SUM_EXPR, VEC_WIDEN_MULT_{HI,LO,EVEN,ODD}_EXPR,
VEC_PACK_{TRUNC,SAT,FIX_TRUNC}_EXPR.
(verify_gimple_assign_ternary): Add verification for DOT_PROD_EXPR.

From-SVN: r252061

Minor edits.

From-SVN: r252060

Regenerate.

From-SVN: r252059

Minor edits.

From-SVN: r252058

Regenerate.

From-SVN: r252057

Minor edits.

From-SVN: r252056

Define std::__to_address helper

* include/bits/allocated_ptr.h (__allocated_ptr::get): Use
__to_address.
(__allocated_ptr::_S_raw_ptr): Remove.
* include/bits/forward_list.h (_Fwd_list_base::_M_get_node): Use
__to_address.
* include/bits/hashtable_policy.h (_Hashtable_alloc): Likewise.
* include/bits/ptr_traits.h (__to_address): Define new function
template.
* include/bits/shared_ptr_base.h (__shared_ptr): Use __to_address.
(__shared_ptr::_S_raw_ptr): Remove.
* include/bits/stl_vector.h [__cplusplus >= 201103L]
(vector::_M_data_ptr): Use __to_address.
[__cplusplus < 201103L] (vector::_M_data_ptr): Don't dereference
possibly invalid pointers.
* include/ext/alloc_traits.h (__alloc_traits::construct)
(__alloc_traits::destroy): Use __to_address.

From-SVN: r252055

New file.

From-SVN: r252054

pr63304_1.c: Remove-mno-fix-cortex-a53-843419.

gcc/testsuite/ChangeLog:

2017-09-13  Kugan Vivekanandarajah  <kuganv@linaro.org>

* gcc.target/aarch64/pr63304_1.c: Remove-mno-fix-cortex-a53-843419.

gcc/ChangeLog:

2017-09-13  Kugan Vivekanandarajah  <kuganv@linaro.org>

* config/aarch64/aarch64.c (aarch64_override_options_after_change_1):
Disable pc relative literal load irrespective of TARGET_FIX_ERR_A53_84341
for default.

From-SVN: r252053

Daily bump.

From-SVN: r252051

sparc.c (output_return): Output the source location of the insn in the delay slot, if any.

* config/sparc/sparc.c (output_return): Output the source location of
the insn in the delay slot, if any.
(output_sibcall): Likewise.

From-SVN: r252041

re PR c++/70621 (ICE on invalid code at -O1 and above on x86_64-linux-gnu in record_reference, at cgraphbuild.c:64)

/cp
2017-09-12  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/70621
* decl.c (start_decl): Early return error_mark_node if duplicate_decls
returns it; avoid misleading error message.

/testsuite
2017-09-12  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/70621
* g++.dg/torture/pr70621.C: New.

From-SVN: r252040

re PR fortran/82173 ([meta-bug] Parameterized derived type errors)

2017-09-12  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/82173
PR fortran/82168
* decl.c (variable_decl): Check pdt template components for
appearance of KIND/LEN components in the type parameter name
list, that components corresponding to type parameters have
either KIND or LEN attributes and that KIND or LEN components
are scalar. Copy the initializer to the parameter value.
(gfc_get_pdt_instance): Add a label 'error_return' and follow
it with repeated code, while replacing this code with a jump.
Check if a parameter appears as a component in the template.
Make sure that the parameter expressions are integer. Validate
KIND expressions.
(gfc_match_decl_type_spec): Search for pdt_types in the parent
namespace since they are instantiated in the template ns.
* expr.c (gfc_extract_int): Use a KIND parameter if it
appears as a component expression.
(gfc_check_init_expr): Allow expressions with the pdt_kind
attribute.
*primary.c (gfc_match_actual_arglist): Make sure that the first
keyword argument is recognised when 'pdt' is set.

2017-09-12  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/82173
* gfortran.dg/pdt_4.f03 : Remove the 'is being used before it
is defined' error.
* gfortran.dg/pdt_6.f03 : New test.
* gfortran.dg/pdt_7.f03 : New test.
* gfortran.dg/pdt_8.f03 : New test.

PR fortran/82168
* gfortran.dg/pdt_9.f03 : New test.

From-SVN: r252039

re PR other/81096 (test case ttest in libbacktrace fails starting with its introduction in r249111)

2017-09-12  Steve Ellcey  <sellcey@cavium.com>

PR other/81096
* Makefile.am (ttest_CFLAGS): Add $(AM_CFLAGS)
* Makefile.in: Regenerate.

From-SVN: r252038

Add DW_CFA_AARCH64_negate_ra_state to dwarf2.def/h and dwarfnames.c

  A new vendor CFA DW_CFA_AARCH64_negate_ra_state was introduced for ARMv8.3-A
return address signing, it is multiplexing DW_CFA_GNU_window_save in CFA vendor
extension space.

  This patch adds necessary code to make it available to external, the GDB
patch (https://sourceware.org/ml/gdb-patches/2017-08/msg00215.html) is intended
to use it.

  A new DW_CFA_DUP for it is added in dwarf2.def.  The use of DW_CFA_DUP is to
avoid duplicated case value issue when included in libiberty/dwarfnames.

  Native x86 builds OK to make sure no macro expanding errors.

Committed on behalf of Jiong Wang.

    include/
* dwarf2.def (DW_CFA_AARCH64_negate_ra_state): New DW_CFA_DUP.
* dwarf2.h (DW_CFA_DUP): New define.

    libiberty/
* dwarfnames.c (DW_CFA_DUP): New define.

From-SVN: r252037

Don't warn function alignment if warn_if_not_aligned_p is true

When warn_if_not_aligned_p is true, a warning will be issued on function
declaration later.  There is no need to warn function alignment when
warn_if_not_aligned_p is true.

* c-attribs.c (common_handle_aligned_attribute): Don't warn
function alignment if warn_if_not_aligned_p is true.

From-SVN: r252036

re PR other/81096 (test case ttest in libbacktrace fails starting with its introduction in r249111)

2017-09-12  Steve Ellcey  <sellcey@cavium.com>

PR other/81096
* libbacktrace/Makefile.in
(HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_CFLAGS): Add $(AM_CFLAGS)

From-SVN: r252035

Add -static-pie to GCC driver to create static PIE

This patch adds -static-pie to GCC driver to create static PIE.  A static
position independent executable (PIE) is similar to static executable,
but can be loaded at any address without a dynamic linker.  All linker
input files must be compiled with -fpie or -fPIE and linker must support
--no-dynamic-linker to avoid linking with dynamic linker.  "-z text" is
also needed to prevent dynamic relocations in read-only segments.

PR driver/81498
* common.opt (-static-pie): New alias.
(shared): Negate static-pie.
(-no-pie): Update help text.
(-pie): Likewise.
(static-pie): New option.
* config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Add
-static-pie support.
(GNU_USER_TARGET_ENDFILE_SPEC): Likewise.
(LINK_EH_SPEC): Likewise.
(LINK_GCC_C_SEQUENCE_SPEC): Likewise.
* config/i386/gnu-user.h (GNU_USER_TARGET_LINK_SPEC): Likewise.
* config/i386/gnu-user64.h (GNU_USER_TARGET_LINK_SPEC): Likewise.
* gcc.c (LINK_COMMAND_SPEC): Likewise.
(init_gcc_specs): Likewise.
(init_spec): Likewise.
(display_help): Update help message for -pie.
* doc/invoke.texi: Update -pie, -no-pie and -static.  Document
-static-pie.

From-SVN: r252034

Remove '*' from movsi/di/ti patterns

Remove the remaining uses of '*' from the movsi/di/ti patterns.
Using '*' in alternatives is typically incorrect at it tells the register
allocator to ignore those alternatives.  So remove these from all the
integer move patterns.  This removes unnecessary int to float moves, for
example gcc.target/aarch64/pr62178.c no longer generates a redundant fmov
since the w = m variant is now allowed.

    gcc/
* config/aarch64/aarch64.md (movsi_aarch64): Remove all '*'.
(movdi_aarch64): Likewise.
(movti_aarch64): Likewise.

From-SVN: r252033

re PR target/80204 (macosx-version-min wrong for macOS Sierra 10.12.3)

PR target/80204
* config/darwin-driver.c (darwin_find_version_from_kernel): Eliminate
calculation of the minor version, always output as 0.

From-SVN: r252029

re PR target/82112 (internal compiler error: in fold_convert_loc, at fold-const.c:2262)

PR target/82112
* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): For
ALTIVEC_BUILTIN_VEC_LD if arg1 has array type call default_conversion
on it early, rather than manual conversion late.  For
ALTIVEC_BUILTIN_VEC_ST if arg2 has array type call default_conversion
instead of performing manual conversion.

* gcc.target/powerpc/pr82112.c: New test.
* g++.dg/ext/altivec-18.C: New test.

From-SVN: r252028

altivec.md (vec_widen_umult_even_v4si, [...]): Add define expands for vmuleuw, vmulesw, vmulouw, vmulosw.

gcc/ChangeLog:

2017-09-12  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.md (vec_widen_umult_even_v4si,
vec_widen_smult_even_v4si): Add define expands for vmuleuw, vmulesw,
vmulouw, vmulosw.
        * config/rs6000/rs6000-builtin.def (VMLEUW, VMULESW, VMULOUW,
        VMULOSW): Add definitions.
        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
        ALTIVEC_BUILTIN_VMULESW, ALTIVEC_BUILTIN_VMULEUW,
        ALTIVEC_BUILTIN_VMULOSW, ALTIVEC_BUILTIN_VMULOUW entries.
        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin,
        builtin_function_type): Add ALTIVEC_BUILTIN_* case statements.

From-SVN: r252027

[Patch AArch64 2/2] Fix memory sizes to load/store patterns

There seems to be a partial misconception in the AArch64 backend that
load1/load2 referred to the number of registers to load, rather than the
number of words to load. This patch fixes that using the new "number of
byte" types added in the previous patch.

That means using the load_16 and store_16 types that were defined in the
previous patch for the first time in the AArch64 backend. To ensure
continuity for scheduling models, I've just split this out from load_8.
Please update your models if this is very wrong!

---
gcc/

* config/aarch64/aarch64.md (movdi_aarch64): Set load/store
types correctly.
(movti_aarch64): Likewise.
(movdf_aarch64): Likewise.
(movtf_aarch64): Likewise.
(load_pairdi): Likewise.
(store_pairdi): Likewise.
(load_pairdf): Likewise.
(store_pairdf): Likewise.
(loadwb_pair<GPI:mode>_<P:mode>): Likewise.
(storewb_pair<GPI:mode>_<P:mode>): Likewise.
(ldr_got_small_<mode>): Likewise.
(ldr_got_small_28k_<mode>): Likewise.
(ldr_got_tiny): Likewise.
* config/aarch64/iterators.md (ldst_sz): New.
(ldpstp_sz): Likewise.
* config/aarch64/thunderx.md (thunderx_storepair): Split store_8
to store_16.
(thunderx_load): Split load_8 to load_16.
* config/aarch64/thunderx2t99.md (thunderx2t99_loadpair): Split
load_8 to load_16.
(thunderx2t99_storepair_basic): Split store_8 to store_16.
* config/arm/xgene1.md (xgene1_load_pair): Split load_8 to load_16.
(xgene1_store_pair): Split store_8 to store_16.
* config/aarch64/falkor.md (falkor_ld_3_ld): Split load_8 to load_16.
(falkor_st_0_st_sd): Split store_8 to store_16.

From-SVN: r252026

[Mechanical Patch ARM/AArch64 1/2] Rename load/store scheduling types to encode data size

In the AArch64 backend and scheduling models there is some confusion as to
what the load1/load2 etc. scheduling types refer to. This leads to us using
load1/load2 in two contexts - for a variety of 32-bit, 64-bit and 128-bit
loads in AArch32 and 128-bit loads in AArch64. That leads to an undesirable
confusion in scheduling.

Fixing it is easy, but mechanical and boring. Essentially,

  s/load1/load_4/
  s/load2/load_8/
  s/load3/load_12/
  s/load4/load_16/
  s/store1/store_4/
  s/store2/store_8/
  s/store3/store_12/
  s/store4/store_16/

Across all sorts of pipeline models, and the two backends.

I have intentionally not modified any of the patterns which now look obviously
incorrect. I'll be doing a second pass over the AArch64 back-end in patch
2/2 which will fix these bugs.

---
gcc/

* config/arm/types.md (type): Rename load1/2/3/4 to load_4/8/12/16
and store1/2/3/4 to store_4/8/12/16.
* config/aarch64/aarch64.md: Update for rename.
* config/arm/arm.md: Likewise.: Likewise.
* config/arm/arm.c: Likewise.
* config/arm/thumb1.md: Likewise.
* config/arm/thumb2.md: Likewise.
* config/arm/vfp.md: Likewise.
* config/arm/arm-generic.md: Likewise.
* config/arm/arm1020e.md: Likewise.
* config/arm/arm1026ejs.md: Likewise.
* config/arm/arm1136jfs.md: Likewise.
* config/arm/arm926ejs.md: Likewise.
* config/arm/cortex-a15.md: Likewise.
* config/arm/cortex-a17.md: Likewise.
* config/arm/cortex-a5.md: Likewise.
* config/arm/cortex-a53.md: Likewise.
* config/arm/cortex-a57.md: Likewise.
* config/arm/cortex-a7.md: Likewise.
* config/arm/cortex-a8.md: Likewise.
* config/arm/cortex-a9.md: Likewise.
* config/arm/cortex-m4.md: Likewise.
* config/arm/cortex-m7.md: Likewise.
* config/arm/cortex-r4.md: Likewise.
* config/arm/exynos-m1.md: Likewise.
* config/arm/fa526.md: Likewise.
* config/arm/fa606te.md: Likewise.
* config/arm/fa626te.md: Likewise.
* config/arm/fa726te.md: Likewise.
* config/arm/fmp626.md: Likewise.
* config/arm/iwmmxt.md: Likewise.
* config/arm/ldmstm.md: Likewise.
* config/arm/marvell-pj4.md: Likewise.
* config/arm/xgene1.md: Likewise.
* config/aarch64/thunderx.md: Likewise.
* config/aarch64/thunderx2t99.md: Likewise.
* config/aarch64/falkor.md: Likewise.

From-SVN: r252025

Fix GIMPLE FE test (PR testsuite/82114)

2017-09-12  Martin Liska  <mliska@suse.cz>

PR testsuite/82114
* gcc.dg/gimplefe-14.c (main): Add handling of case 0.

From-SVN: r252024

c-common.c (field_decl_cmp, [...]): Move to c/c-decl.c.

c-family/
* c-common.c (field_decl_cmp, resort_data, resort_field_decl_cmp,
resort_sorted_fields): Move to c/c-decl.c.
* c-common.h (field_decl_cmp, resort_sorted_fields): Delete.
(struct sorted_fields_type): Move to c/c-lang.h.

c/
* c-decl.c (field_decl_cmp, resort_data, resort_field_decl_cmp,
resort_sorted_fields): Moved from c-family/c-common.c.
* c-lang.h (struct sorted_fields_type): Moved from c-family/c-common.h.

From-SVN: r252023

Reduce lookup_attribute memory footprint.

2017-09-12  Martin Liska  <mliska@suse.cz>

* attribs.c (private_lookup_attribute): New function.
* attribs.h (private_lookup_attribute): Declared here.
(lookup_attribute): Called from this place.

From-SVN: r252022

re PR tree-optimization/82157 (ICE on valid code at -O2 and -O3: cannot update SSA form)

2017-09-12  Richard Biener  <rguenther@suse.de>

PR tree-optimization/82157
* tree-ssa-pre.c (remove_dead_inserted_code): Do not remove
stmts with side-effects.

* gcc.dg/torture/pr82157.c: New testcase.

From-SVN: r252020

PR libstdc++/79433 no #error for including TS headers with wrong -std

PR libstdc++/79433
* include/Makefile.am: Remove <bits/c++14_warning.h>.
* include/Makefile.in: Regenerate.
* include/bits/c++14_warning.h: Remove.
* include/experimental/algorithm: Do not include <c++14_warning.h>.
* include/experimental/any: Likewise.
* include/experimental/array: Likewise.
* include/experimental/bits/erase_if.h: Likewise.
* include/experimental/bits/lfts_config.h: Likewise.
* include/experimental/bits/shared_ptr.h: Likewise.
* include/experimental/bits/string_view.tcc: Likewise.
* include/experimental/chrono: Likewise.
* include/experimental/deque: Likewise.
* include/experimental/filesystem: Do not include <c++0x_warning.h>.
* include/experimental/forward_list: Do not include <c++14_warning.h>.
* include/experimental/functional: Likewise.
* include/experimental/iterator: Likewise.
* include/experimental/list: Likewise.
* include/experimental/map: Likewise.
* include/experimental/memory: Likewise.
* include/experimental/numeric: Likewise.
* include/experimental/optional: Likewise.
* include/experimental/propagate_const: Likewise.
* include/experimental/ratio: Likewise.
* include/experimental/regex: Likewise.
* include/experimental/set: Likewise.
* include/experimental/string: Likewise.
* include/experimental/string_view: Likewise.
* include/experimental/system_error: Likewise.
* include/experimental/tuple: Likewise.
* include/experimental/type_traits: Likewise.
* include/experimental/unordered_map: Likewise.
* include/experimental/unordered_set: Likewise.
* include/experimental/vector: Likewise.
* testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error
line number.
* testsuite/experimental/array/neg.cc: Likewise.
* testsuite/experimental/propagate_const/assignment/move_neg.cc:
Likewise.
* testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
* testsuite/experimental/propagate_const/requirements2.cc: Likewise.
* testsuite/experimental/propagate_const/requirements3.cc: Likewise.
* testsuite/experimental/propagate_const/requirements4.cc: Likewise.
* testsuite/experimental/propagate_const/requirements5.cc: Likewise.

From-SVN: r252019

PR libstdc++/79433 no #error for including headers with wrong -std

PR libstdc++/79433
* doc/xml/manual/status_cxx2017.xml: Update feature-test macros.
* doc/html/*: Regenerate.
* include/Makefile.am: Remove <bits/c++17_warning.h>.
* include/Makefile.in: Regenerate.
* include/bits/c++17_warning.h: Remove.
* include/bits/string_view.tcc: Do not include <bits/c++17_warning.h>
for pre-C++17 modes.
* include/std/any: Likewise.
(__cpp_lib_any): Define.
* include/std/mutex (__cpp_lib_scoped_lock): Adjust value as per new
SD-6 draft.
* include/std/numeric (__cpp_lib_gcd_lcm): Define as per new SD-6
draft.
* include/std/optional: Do not include <bits/c++17_warning.h>.
(__cpp_lib_optional): Define.
* include/std/shared_mutex: Do not include <bits/c++14_warning.h>.
* include/std/string_view: Do not include <bits/c++17_warning.h>.
(__cpp_lib_string_view): Define.
* include/std/variant: Do not include <bits/c++17_warning.h>.
(__cpp_lib_variant): Define.
* testsuite/20_util/optional/cons/value_neg.cc: Adjust dg-error line
numbers.
* testsuite/26_numerics/gcd/1.cc: Test for __cpp_lib_gcd_lcm.
* testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line
numbers.
* testsuite/26_numerics/lcm/1.cc: Test for __cpp_lib_gcd_lcm.
* testsuite/26_numerics/lcm/lcm_neg.cc: Adjust dg-error line
numbers.
* testsuite/30_threads/scoped_lock/requirements/typedefs.cc: Adjust
expected value of __cpp_lib_scoped_lock.

From-SVN: r252018

PR libstdc++/70483 make std::experimental::string_view fully constexpr

PR libstdc++/70483
* include/experimental/bits/string_view.tcc (basic_string_view::find)
(basic_string_view::rfind, basic_string_view::find_first_of)
(basic_string_view::find_last_of, basic_string_view::find_first_not_of)
(basic_string_view::find_last_not_of): Add constexpr specifier.
* include/experimental/string_view (basic_string_view::remove_prefix)
(basic_string_view::remove_suffix, basic_string_view::swap)
(basic_string_view::compare, basic_string_view::find)
(basic_string_view::rfind, basic_string_view::find_first_of)
(basic_string_view::find_last_of, basic_string_view::find_first_not_of)
(basic_string_view::find_last_not_of, operator==, operator!=)
(operator<, operator>, operator<=, operator>=): Likewise.
* testsuite/experimental/string_view/operations/compare/char/70483.cc:
New.

From-SVN: r252017

Turn HARD_REGNO_NREGS into a target hook

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood <david.sherwood@arm.com>

gcc/
* target.def (hard_regno_nregs): New hook.
(class_max_nregs): Refer to it instead of HARD_REGNO_NREGS.
* targhooks.h (default_hard_regno_nregs): Declare.
* targhooks.c (default_hard_regno_nregs): New function.
* doc/tm.texi.in (HARD_REGNO_NREGS): Replace with...
(TARGET_HARD_REGNO_NREGS): ...this hook.
(HARD_REGNO_NREGS_HAS_PADDING): Update accordingly.
(CLASS_MAX_NREGS): Likewise.
* doc/tm.texi: Regenerate.
* reginfo.c (init_reg_modes_target): Use targetm.hard_regno_nregs
instead of HARD_REGNO_NREGS.
* rtl.h (REG_NREGS): Refer to TARGET_HARD_REGNO_NREGS rather than
HARD_REGNO_NREGS in the comment.
* config/aarch64/aarch64.h (HARD_REGNO_NREGS): Delete.
* config/aarch64/aarch64-protos.h (aarch64_hard_regno_nregs): Delete.
* config/aarch64/aarch64.c (aarch64_hard_regno_nregs): Make static.
Return an unsigned int.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/alpha/alpha.h (HARD_REGNO_NREGS): Delete.
* config/arc/arc.h (HARD_REGNO_NREGS): Delete.
* config/arc/arc.c (TARGET_HARD_REGNO_NREGS): Redefine.
(arc_hard_regno_nregs): New function.
* config/arm/arm.h (HARD_REGNO_NREGS): Delete.
* config/arm/arm.c (TARGET_HARD_REGNO_NREGS): Redefine.
(arm_hard_regno_nregs): New function.
* config/avr/avr.h (HARD_REGNO_NREGS): Delete.
* config/bfin/bfin.h (HARD_REGNO_NREGS): Delete.
* config/bfin/bfin.c (bfin_hard_regno_nregs): New function.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/c6x/c6x.h (HARD_REGNO_NREGS): Delete.
* config/cr16/cr16.h (LONG_REG_P): Use targetm.hard_regno_nregs.
(HARD_REGNO_NREGS): Delete.
* config/cr16/cr16.c (TARGET_HARD_REGNO_NREGS): Redefine.
(cr16_hard_regno_nregs): New function.
(cr16_memory_move_cost): Use it instead of HARD_REGNO_NREGS.
* config/cris/cris.h (HARD_REGNO_NREGS): Delete.
* config/cris/cris.c (TARGET_HARD_REGNO_NREGS): Redefine.
(cris_hard_regno_nregs): New function.
* config/epiphany/epiphany.h (HARD_REGNO_NREGS): Delete.
* config/fr30/fr30.h (HARD_REGNO_NREGS): Delete.
(CLASS_MAX_NREGS): Use targetm.hard_regno_nregs.
* config/frv/frv.h (HARD_REGNO_NREGS): Delete.
(CLASS_MAX_NREGS): Remove outdated copy of documentation.
* config/frv/frv-protos.h (frv_hard_regno_nregs): Delete.
* config/frv/frv.c (TARGET_HARD_REGNO_NREGS): Redefine.
(frv_hard_regno_nregs): Make static.  Take and return an
unsigned int.
(frv_class_max_nregs): Remove outdated copy of documentation.
* config/ft32/ft32.h (HARD_REGNO_NREGS): Delete.
* config/h8300/h8300.h (HARD_REGNO_NREGS): Delete.
* config/h8300/h8300-protos.h (h8300_hard_regno_nregs): Delete.
* config/h8300/h8300.c (h8300_hard_regno_nregs): Delete.
* config/i386/i386.h (HARD_REGNO_NREGS): Delete.
* config/i386/i386.c (ix86_hard_regno_nregs): New function.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/ia64/ia64.h (HARD_REGNO_NREGS): Delete.
(CLASS_MAX_NREGS): Update comment.
* config/ia64/ia64.c (TARGET_HARD_REGNO_NREGS): Redefine.
(ia64_hard_regno_nregs): New function.
* config/iq2000/iq2000.h (HARD_REGNO_NREGS): Delete.
* config/lm32/lm32.h (HARD_REGNO_NREGS): Delete.
* config/m32c/m32c.h (HARD_REGNO_NREGS): Delete.
* config/m32c/m32c-protos.h (m32c_hard_regno_nregs): Delete.
* config/m32c/m32c.c (m32c_hard_regno_nregs_1): Take and return
an unsigned int.
(m32c_hard_regno_nregs): Likewise.  Make static.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/m32r/m32r.h (HARD_REGNO_NREGS): Delete.
* config/m68k/m68k.h (HARD_REGNO_NREGS): Delete.
* config/m68k/m68k.c (TARGET_HARD_REGNO_NREGS): Redefine.
(m68k_hard_regno_nregs): New function.
* config/mcore/mcore.h (HARD_REGNO_NREGS): Delete.
* config/microblaze/microblaze.h (HARD_REGNO_NREGS): Delete.
* config/mips/mips.h (HARD_REGNO_NREGS): Delete.
* config/mips/mips-protos.h (mips_hard_regno_nregs): Delete.
* config/mips/mips.c (mips_hard_regno_nregs): Make static.
Take and return an unsigned int.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/mmix/mmix.h (HARD_REGNO_NREGS): Delete.
(CLASS_MAX_NREGS): Use targetm.hard_regno_nregs.
* config/mn10300/mn10300.h (HARD_REGNO_NREGS): Delete.
* config/moxie/moxie.h (HARD_REGNO_NREGS): Delete.
* config/msp430/msp430.h (HARD_REGNO_NREGS): Delete.
* config/msp430/msp430-protos.h (msp430_hard_regno_nregs): Delete.
* config/msp430/msp430.c (TARGET_HARD_REGNO_NREGS): Redefine.
(msp430_hard_regno_nregs): Make static.  Take and return an
unsigned int.
* config/nds32/nds32.h (HARD_REGNO_NREGS): Delete.
* config/nds32/nds32-protos.h (nds32_hard_regno_nregs): Delete.
* config/nds32/nds32.c (nds32_hard_regno_nregs): Delete.
(nds32_hard_regno_mode_ok): Use targetm.hard_regno_nregs.
* config/nios2/nios2.h (HARD_REGNO_NREGS): Delete.
* config/nvptx/nvptx.h (HARD_REGNO_NREGS): Delete.
* config/nvptx/nvptx.c (nvptx_hard_regno_nregs): New function.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/pa/pa32-regs.h (HARD_REGNO_NREGS): Rename to...
(PA_HARD_REGNO_NREGS): ...this.
* config/pa/pa64-regs.h (HARD_REGNO_NREGS): Rename to...
(PA_HARD_REGNO_NREGS): ...this.
* config/pa/pa.c (TARGET_HARD_REGNO_NREGS): Redefine.
(pa_hard_regno_nregs): New function.
* config/pdp11/pdp11.h (HARD_REGNO_NREGS): Delete.
* config/pdp11/pdp11.c (TARGET_HARD_REGNO_NREGS): Redefine.
(pdp11_hard_regno_nregs): New function.
* config/powerpcspe/powerpcspe.h (HARD_REGNO_NREGS): Delete.
* config/powerpcspe/powerpcspe.c (TARGET_HARD_REGNO_NREGS): Redefine.
(rs6000_hard_regno_nregs_hook): New function.
* config/riscv/riscv.h (HARD_REGNO_NREGS): Delete.
* config/riscv/riscv-protos.h (riscv_hard_regno_nregs): Delete.
* config/riscv/riscv.c (riscv_hard_regno_nregs): Make static.
Take and return an unsigned int.  Move earlier in file.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/rl78/rl78.h (HARD_REGNO_NREGS): Delete.
* config/rl78/rl78-protos.h (rl78_hard_regno_nregs): Delete.
* config/rl78/rl78.c (TARGET_HARD_REGNO_NREGS): Reefine.
(rl78_hard_regno_nregs): Make static.  Take and return an
unsigned int.
* config/rs6000/rs6000.h (HARD_REGNO_NREGS): Delete.
* config/rs6000/rs6000.c (TARGET_HARD_REGNO_NREGS): Redefine.
(rs6000_hard_regno_nregs_hook): New function.
* config/rx/rx.h (HARD_REGNO_NREGS): Delete.
* config/rx/rx.c (rx_hard_regno_nregs): New function.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/s390/s390.h (HARD_REGNO_NREGS): Delete.
* config/s390/s390.c (REGNO_PAIR_OK): Use s390_hard_regno_nregs
instead of HARD_REGNO_NREGS.
(s390_hard_regno_nregs): New function.
(s390_hard_regno_mode_ok): Add comment from s390.h.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/sh/sh.h (HARD_REGNO_NREGS): Delete.
* config/sh/sh.c (TARGET_HARD_REGNO_NREGS): Redefine.
(sh_hard_regno_nregs): New function.
(sh_pass_in_reg_p): Use it.
* config/sparc/sparc.h (HARD_REGNO_NREGS): Delete.
* config/sparc/sparc.c (TARGET_HARD_REGNO_NREGS): Redefine.
(sparc_hard_regno_nregs): New function.
* config/spu/spu.h (HARD_REGNO_NREGS): Delete.
* config/spu/spu.c (spu_hard_regno_nregs): New function.
(spu_function_arg_advance): Use it, supplying a valid register number.
(TARGET_HARD_REGNO_NREGS): Redefine.
* config/stormy16/stormy16.h (HARD_REGNO_NREGS): Delete.
* config/tilegx/tilegx.h (HARD_REGNO_NREGS): Delete.
* config/tilepro/tilepro.h (HARD_REGNO_NREGS): Delete.
* config/v850/v850.h (HARD_REGNO_NREGS): Delete.
* config/vax/vax.h (HARD_REGNO_NREGS): Delete.
* config/visium/visium.h (HARD_REGNO_NREGS): Delete.
(CLASS_MAX_NREGS): Remove copy of old documentation.
* config/visium/visium.c (TARGET_HARD_REGNO_NREGS): Redefine.
(visium_hard_regno_nregs): New function.
(visium_hard_regno_mode_ok): Use it instead of HARD_REGNO_NREGS.
* config/xtensa/xtensa.h (HARD_REGNO_NREGS): Delete.
* config/xtensa/xtensa.c (TARGET_HARD_REGNO_NREGS): Redefine.
xtensa_hard_regno_nregs): New function.
* system.h (HARD_REGNO_NREGS): Poison.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r252016

Use hard_regno_nregs instead of HARD_REGNO_NREGS

This patch converts some places that use HARD_REGNO_NREGS to use
hard_regno_nregs, in places where the initialisation has obviously
already taken place.

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/arm/arm.h (THUMB_SECONDARY_INPUT_RELOAD_CLASS): Use
hard_regno_nregs instead of HARD_REGNO_NREGS.
(THUMB_SECONDARY_OUTPUT_RELOAD_CLASS): Likewise.
* config/c6x/c6x.c (c6x_expand_prologue): Likewise.
(c6x_expand_epilogue): Likewise.
* config/frv/frv.c (frv_alloc_temp_reg): Likewise.
(frv_read_iacc_argument): Likewise.
* config/sh/sh.c: Include regs.h.
(sh_print_operand): Use hard_regno_nregs instead of HARD_REGNO_NREGS.
(regs_used): Likewise.
(output_stack_adjust): Likewise.
* config/xtensa/xtensa.c (xtensa_copy_incoming_a7): Likewise.
* expmed.c: Include regs.h.
(store_bit_field_1): Use hard_regno_nregs instead of HARD_REGNO_NREGS.
* ree.c: Include regs.h.
(combine_reaching_defs): Use hard_regno_nregs instead of
HARD_REGNO_NREGS.
(add_removable_extension): Likewise.

From-SVN: r252015

Convert hard_regno_nregs to a function

This patch converts hard_regno_nregs into an inline function, which
in turn allows hard_regno_nregs to be used as the name of a targetm
field.  This is just a mechanical change.

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* regs.h (hard_regno_nregs): Turn into a function.
(end_hard_regno): Update accordingly.
* caller-save.c (setup_save_areas): Likewise.
(save_call_clobbered_regs): Likewise.
(replace_reg_with_saved_mem): Likewise.
(insert_restore): Likewise.
(insert_save): Likewise.
* combine.c (can_change_dest_mode): Likewise.
(move_deaths): Likewise.
(distribute_notes): Likewise.
* config/mips/mips.c (mips_hard_regno_call_part_clobbered): Likewise.
* config/powerpcspe/powerpcspe.c (rs6000_cannot_change_mode_class)
(rs6000_split_multireg_move): Likewise.
(rs6000_register_move_cost): Likewise.
(rs6000_memory_move_cost): Likewise.
* config/rs6000/rs6000.c (rs6000_cannot_change_mode_class): Likewise.
(rs6000_split_multireg_move): Likewise.
(rs6000_register_move_cost): Likewise.
(rs6000_memory_move_cost): Likewise.
* cselib.c (cselib_reset_table): Likewise.
(cselib_lookup_1): Likewise.
* emit-rtl.c (set_mode_and_regno): Likewise.
* function.c (aggregate_value_p): Likewise.
* ira-color.c (setup_profitable_hard_regs): Likewise.
(check_hard_reg_p): Likewise.
(calculate_saved_nregs): Likewise.
(assign_hard_reg): Likewise.
(improve_allocation): Likewise.
(calculate_spill_cost): Likewise.
* ira-emit.c (modify_move_list): Likewise.
* ira-int.h (ira_hard_reg_set_intersection_p): Likewise.
(ira_hard_reg_in_set_p): Likewise.
* ira.c (setup_reg_mode_hard_regset): Likewise.
(clarify_prohibited_class_mode_regs): Likewise.
(check_allocation): Likewise.
* lra-assigns.c (find_hard_regno_for_1): Likewise.
(lra_setup_reg_renumber): Likewise.
(setup_try_hard_regno_pseudos): Likewise.
(spill_for): Likewise.
(assign_hard_regno): Likewise.
(setup_live_pseudos_and_spill_after_risky_transforms): Likewise.
* lra-constraints.c (in_class_p): Likewise.
(lra_constraint_offset): Likewise.
(simplify_operand_subreg): Likewise.
(lra_constraints): Likewise.
(split_reg): Likewise.
(split_if_necessary): Likewise.
(invariant_p): Likewise.
(inherit_in_ebb): Likewise.
* lra-lives.c (process_bb_lives): Likewise.
* lra-remat.c (reg_overlap_for_remat_p): Likewise.
(get_hard_regs): Likewise.
(do_remat): Likewise.
* lra-spills.c (assign_spill_hard_regs): Likewise.
* mode-switching.c (create_pre_exit): Likewise.
* postreload.c (reload_combine_recognize_pattern): Likewise.
* recog.c (peep2_find_free_register): Likewise.
* regcprop.c (kill_value_regno): Likewise.
(set_value_regno): Likewise.
(copy_value): Likewise.
(maybe_mode_change): Likewise.
(find_oldest_value_reg): Likewise.
(copyprop_hardreg_forward_1): Likewise.
* regrename.c (check_new_reg_p): Likewise.
(regrename_do_replace): Likewise.
* reload.c (push_reload): Likewise.
(combine_reloads): Likewise.
(find_dummy_reload): Likewise.
(operands_match_p): Likewise.
(find_reloads): Likewise.
(find_equiv_reg): Likewise.
(reload_adjust_reg_for_mode): Likewise.
* reload1.c (count_pseudo): Likewise.
(count_spilled_pseudo): Likewise.
(find_reg): Likewise.
(clear_reload_reg_in_use): Likewise.
(free_for_value_p): Likewise.
(allocate_reload_reg): Likewise.
(choose_reload_regs): Likewise.
(reload_adjust_reg_for_temp): Likewise.
(emit_reload_insns): Likewise.
(delete_output_reload): Likewise.
* rtlanal.c (subreg_get_info): Likewise.
* sched-deps.c (sched_analyze_reg): Likewise.
* sel-sched.c (init_regs_for_mode): Likewise.
(mark_unavailable_hard_regs): Likewise.
(choose_best_reg_1): Likewise.
(verify_target_availability): Likewise.
* valtrack.c (dead_debug_insert_temp): Likewise.
* var-tracking.c (track_loc_p): Likewise.
(emit_note_insn_var_location): Likewise.
* varasm.c (make_decl_rtl): Likewise.
* reginfo.c (choose_hard_reg_mode): Likewise.
(init_reg_modes_target): Refer directly to
this_target_regs->x_hard_regno_nregs.

From-SVN: r252014

Make more use of in_hard_reg_set_p

An upcoming patch will convert hard_regno_nregs into an inline
function, which in turn allows hard_regno_nregs to be used as the
name of a targetm field.  This patch rewrites a use that can use
in_hard_reg_set_p instead.

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* ira-costs.c (record_operand_costs): Use in_hard_reg_set_p
instead of hard_regno_nregs.

From-SVN: r252013

Make more use of end_hard_regno

An upcoming patch will convert hard_regno_nregs into an inline
function, which in turn allows hard_regno_nregs to be used as the
name of a targetm field.  This patch rewrites uses that can use
end_hard_regno instead.

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64.c (aarch64_hard_regno_mode_ok): Use
end_hard_regno instead of hard_regno_nregs.
* config/s390/s390.c (s390_reg_clobbered_rtx): Likewise.
* config/sparc/sparc.h (ASM_DECLARE_REGISTER_GLOBAL): Likewise.
* config/visium/visium.c (visium_hard_regno_mode_ok): Likewise.
* ira-color.c (improve_allocation): Likewise.
* lra-assigns.c (find_hard_regno_for_1): Likewise.
* lra-lives.c (mark_regno_live): Likewise.
(mark_regno_dead): Likewise.
* lra-remat.c (operand_to_remat): Likewise.
* lra.c (collect_non_operand_hard_regs): Likewise.
* postreload.c (reload_combine_note_store): Likewise.
(move2add_valid_value_p): Likewise.
* reload.c (regno_clobbered_p): Likewise.

From-SVN: r252012

Make more use of END_REGNO

An upcoming patch will convert hard_regno_nregs into an inline
function, which in turn allows hard_regno_nregs to be used as the
name of a targetm field.  This patch rewrites uses that are more
easily (and efficiently) written as END_REGNO.

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/frv/frv.c (FOR_EACH_REGNO): Use END_REGNO instead of
hard_regno_nregs.
* config/v850/v850.c (v850_reorg): Likewise.
* reload.c (refers_to_regno_for_reload_p): Likewise.
(find_equiv_reg): Likewise.
* reload1.c (reload_reg_reaches_end_p): Likewise.

From-SVN: r252011

Make more use of REG_NREGS

An upcoming patch will convert hard_regno_nregs into an inline
function, which in turn allows hard_regno_nregs to be used as the
name of a targetm field.  This patch rewrites uses that are more
easily (and efficiently) written as REG_NREGS.

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* caller-save.c (add_used_regs): Use REG_NREGS instead of
hard_regno_nregs.
* config/aarch64/aarch64.c (aarch64_split_combinev16qi): Likewise.
* config/arm/arm.c (output_move_neon): Likewise.
(arm_attr_length_move_neon): Likewise.
(neon_split_vcombine): Likewise.
* config/c6x/c6x.c (c6x_mark_reg_read): Likewise.
(c6x_mark_reg_written): Likewise.
(c6x_dwarf_register_span): Likewise.
* config/i386/i386.c (ix86_save_reg): Likewise.
* config/ia64/ia64.c (mark_reg_gr_used_mask): Likewise.
(rws_access_reg): Likewise.
* config/s390/s390.c (s390_call_saved_register_used): Likewise.
* mode-switching.c (create_pre_exit): Likewise.
* ree.c (combine_reaching_defs): Likewise.
(add_removable_extension): Likewise.
* regcprop.c (find_oldest_value_reg): Likewise.
(copyprop_hardreg_forward_1): Likewise.
* reload.c (reload_inner_reg_of_subreg): Likewise.
(push_reload): Likewise.
(combine_reloads): Likewise.
(find_dummy_reload): Likewise.
(reload_adjust_reg_for_mode): Likewise.
* reload1.c (find_reload_regs): Likewise.
(forget_old_reloads_1): Likewise.
(reload_reg_free_for_value_p): Likewise.
(reload_adjust_reg_for_temp): Likewise.
(emit_reload_insns): Likewise.
(delete_output_reload): Likewise.
* sel-sched.c (choose_best_reg_1): Likewise.
(choose_best_pseudo_reg): Likewise.

From-SVN: r252010

Turn SLOW_UNALIGNED_ACCESS into a target hook

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood <david.sherwood@arm.com>

gcc/
* defaults.h (SLOW_UNALIGNED_ACCESS): Delete.
* target.def (slow_unaligned_access): New hook.
* targhooks.h (default_slow_unaligned_access): Declare.
* targhooks.c (default_slow_unaligned_access): New function.
* doc/tm.texi.in (SLOW_UNALIGNED_ACCESS): Replace with...
(TARGET_SLOW_UNALIGNED_ACCESS): ...this.
* doc/tm.texi: Regenerate.
* config/alpha/alpha.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/arm/arm.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/i386/i386.h (SLOW_UNALIGNED_ACCESS): Delete commented-out
definition.
* config/powerpcspe/powerpcspe.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/powerpcspe/powerpcspe.c (TARGET_SLOW_UNALIGNED_ACCESS):
Redefine.
(rs6000_slow_unaligned_access): New function.
(rs6000_emit_move): Use it instead of SLOW_UNALIGNED_ACCESS.
(expand_block_compare): Likewise.
(expand_strn_compare): Likewise.
(rs6000_rtx_costs): Likewise.
* config/riscv/riscv.h (SLOW_UNALIGNED_ACCESS): Delete.
(riscv_slow_unaligned_access): Likewise.
* config/riscv/riscv.c (riscv_slow_unaligned_access): Rename to...
(riscv_slow_unaligned_access_p): ...this and make static.
(riscv_option_override): Update accordingly.
(riscv_slow_unaligned_access): New function.
(TARGET_SLOW_UNALIGNED_ACCESS): Redefine.
* config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/rs6000/rs6000.c (TARGET_SLOW_UNALIGNED_ACCESS): Redefine.
(rs6000_slow_unaligned_access): New function.
(rs6000_emit_move): Use it instead of SLOW_UNALIGNED_ACCESS.
(rs6000_rtx_costs): Likewise.
* config/rs6000/rs6000-string.c (expand_block_compare)
(expand_strn_compare): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* config/tilegx/tilegx.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/tilepro/tilepro.h (SLOW_UNALIGNED_ACCESS): Delete.
* calls.c (expand_call): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* expmed.c (simple_mem_bitfield_p): Likewise.
* expr.c (alignment_for_piecewise_move): Likewise.
(emit_group_load_1): Likewise.
(emit_group_store): Likewise.
(copy_blkmode_from_reg): Likewise.
(emit_push_insn): Likewise.
(expand_assignment): Likewise.
(store_field): Likewise.
(expand_expr_real_1): Likewise.
* gimple-fold.c (gimple_fold_builtin_memory_op): Likewise.
* lra-constraints.c (simplify_operand_subreg): Likewise.
* stor-layout.c (bit_field_mode_iterator::next_mode): Likewise.
* gimple-ssa-store-merging.c: Likewise in block comment at start
of file.
* tree-ssa-strlen.c: Include target.h.
(handle_builtin_memcmp): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* system.h (SLOW_UNALIGNED_ACCESS): Poison.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r252009

PR81285: Fix uninitialised variable in emit_store_flag_int

2017-09-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR rtl-optimization/82185
* expmed.c (emit_store_flag_int): Only test tem if it has been
initialized.

From-SVN: r252008

re PR middle-end/82149 (match.pd: 2919: bad if test ?)

2017-09-12  Richard Biener  <rguenther@suse.de>

PR middle-end/82149
* match.pd ((FTYPE) N CMP CST): Fix typo.

From-SVN: r252007

Add short_call function attribute for MIPS

gcc/
* config/mips/mips.c (mips_attribute_table): Add 'short_call'
attribute.
(mips_near_type_p): Add 'short_call' attribute as a synonym
for 'near'.
* doc/extend.texi (short_call): Document new function attribute.

gcc/testsuite

* gcc.target/mips/near-far-1.c: Add check for 'short_call'
attribute.
* gcc.target/mips/near-far-2.c: Likewise.
* gcc.target/mips/near-far-3.c: Likewise.
* gcc.target/mips/near-far-4.c: Likewise.

From-SVN: r252006

Kill CLASSTYPE_SORTED_FIELDS.

* cp-tree.h (struct lang_type): Lose sorted_fields member.
(CLASSTYPE_SORTED_FIELDS): Delete.
* name-lookup.h (set_class_bindings): Add EXTRA arg.
* name-lookup.c (fields_linear_search): New, broken out of ...
(lookup_field_1): ... here.  Delete remainder of function.
(get_class_binding_direct): Reimplement without sorted_fields.
(get_class_binding): Rename TYPE arg to KLASS, for consistency.
(get_method_slot): Call set_class_binding when creating method_vec
on complete type.
(method_name_cmp): Order identically named slots.
(sorted_fields_type_new): Delete.
(field_vc_append_class_fields): Rename to ...
(method_vec_append_class_fields): ... here.  Adjust.
(field_vec_append_enum_values): Renme to ...
(method_vec_append_enum_values): ... here. Adjust.
(method_vec_dedup): New.
(set_class_bindings): Reimplement.
(insert_late_enum_def_bindings): Reimplement.

From-SVN: r252005

name-lookup.c (get_class_binding): Rename TYPE arg to KLASS for consistency.

* name-lookup.c (get_class_binding): Rename TYPE arg to KLASS for
consistency.
(restort_data): Move later.
(method_name_cmp, resort_method_name_cmp): Simplify.
(resort_type_method_vec): Reformat.

From-SVN: r252004

re PR target/82112 (internal compiler error: in fold_convert_loc, at fold-const.c:2262)

PR target/82112
* c-common.c (sync_resolve_size): Instead of c_dialect_cxx ()
assertion check that in the condition.
(get_atomic_generic_size): Likewise.  Before testing if parameter
has pointer type, if it has array type, call for C++
default_conversion to perform array-to-pointer conversion.

* c-c++-common/pr82112.c: New test.
* gcc.dg/pr82112.c: New test.

From-SVN: r252003

tree-vect-generic.c (expand_vector_operations_1): Do nothing for operations we cannot scalarize.

2017-09-12  Richard Biener  <rguenther@suse.de>

* tree-vect-generic.c (expand_vector_operations_1): Do nothing
for operations we cannot scalarize.

From-SVN: r252002

[multiple changes]

2017-09-12  Bob Duff  <duff@adacore.com>

* sem_warn.adb: Minor comment.

2017-09-12  Bob Duff  <duff@adacore.com>

* libgnat/a-cbdlli.adb, libgnat/a-cbhama.adb,
libgnat/a-cbmutr.adb, libgnat/a-cborma.adb: Rename New_Item to
be Default_Initialized_Item, and apply pragma Unmodified to it,
to suppress the warning.

2017-09-12  Eric Botcazou  <ebotcazou@adacore.com>

* exp_aggr.adb (Aggr_Assignment_OK_For_Backend): Add early return
for access types.

2017-09-12  Yannick Moy  <moy@adacore.com>

* gnat1drv.adb (Adjust_Global_Switches): Consider Refined_Global
together with Global when ignoring one in CodePeer mode.

2017-09-12  Javier Miranda  <miranda@adacore.com>

* sem_ch3.adb (Analyze_Declarations): In nested
package declarations that have a private part enable missing check
of the RM rule 13.1.1(11/3): usage names in aspect definitions are
resolved at the end of the immediately enclosing declaration list.

From-SVN: r252001

[multiple changes]

2017-09-12  Bob Duff  <duff@adacore.com>

* sem_ch6.adb (Analyze_Expression_Function): Initialize Def_Id to
Empty.

2017-09-12  Georges-Axel Jaloyan  <jaloyan@adacore.com>

* debug.adb: Reserving flag -gnatdF for safe pointer checking.
* gnat1drv.adb (gnat1drv): Adding the call to the analysis on
dF flag.
* sem_spark.adb, sem_spark.ads: Implementation of the analysis,
in preparation for the evolution of the SPARK language that
includes a pointer analysis for checking non-aliasing of access
types. The Check_Safe_Pointers function is the entry point, and
will traverse the AST and raise compile-time errors everytime
it detects non-begign aliasing.  Detailed comments are present
in the sem_spark.ads file.
* sem_util.adb, sem_util.ads (First_Global, Next_Global): New
functions to iterate over the list of globals of a subprogram.
* libgnat/system.ads: Add restriction No_Finalization.
* gcc-interface/Make-lang.in: Add new file sem_spark.adb and
dependency on g-dynhta.adb.

From-SVN: r252000

sem_ch6.adb (Analyze_Expression_Function): Call Check_Dynamically_Tagged_Expression.

2017-09-12  Bob Duff  <duff@adacore.com>

* sem_ch6.adb (Analyze_Expression_Function): Call
Check_Dynamically_Tagged_Expression.
* sem_util.adb (Check_Dynamically_Tagged_Expression): Remove
"and then Is_Tagged_Type (Typ)" because there is an earlier
"Assert (Is_Tagged_Type (Typ))".

From-SVN: r251999

tree-ssa-threadbackward.c (fsm_find_thread_path): Make GC vectors heap vectors.

* tree-ssa-threadbackward.c (fsm_find_thread_path): Make GC
vectors heap vectors.  Clean up comments.
Make visited_bbs a reference.
(profitable_jump_thread_path): Make GC
vectors heap vectors.  Clean up comments.
Misc cleanups.
(convert_and_register_jump_thread_path): Make GC vectors heap
vectors.
(check_subpath_and_update_thread_path): Same.  Clean up comments.
Make visited_bbs a reference.
(handle_phi): Abstract common code to to
register_jump_thread_path_if_profitable.
Rename VAR_BB to DEF_BB.
Update comments.
Make GC vectors heap vectors.
Make visited_bbs a reference.
(handle_assignment): Same.
(register_jump_thread_path_if_profitable): New.
(fsm_find_control_statement_thread_paths): Rename VAR_BB to
DEF_BB.
Make GC vectors heap vectors.  Clean up comments.
Make visited_bbs a reference.
(find_jump_threads_backwards): Make visited_bbs live in the stack.
* tree-ssa-threadupdate.c (delete_jump_thread_path): Fix typo in
comment.

From-SVN: r251998

* gcc-interface/Makefile.in (SPARC/Solaris): Remove obsolete stuff.

From-SVN: r251997

Daily bump.

From-SVN: r251996

PR libstdc++/70483 make std::string_view fully constexpr

PR libstdc++/70483
* include/bits/string_view.tcc (basic_string_view::find)
(basic_string_view::rfind, basic_string_view::find_first_of)
(basic_string_view::find_last_of, basic_string_view::find_first_not_of)
(basic_string_view::find_last_not_of): Add constexpr specifier.
* include/std/string_view (basic_string_view::operator=)
(basic_string_view::rbegin, basic_string_view::rend)
(basic_string_view::crbegin, basic_string_view::crend)
(basic_string_view::remove_prefix, basic_string_view::remove_suffix)
(basic_string_view::swap, basic_string_view::compare)
(basic_string_view::find, basic_string_view::rfind)
(basic_string_view::find_first_of, basic_string_view::find_last_of)
(basic_string_view::find_first_not_of)
(basic_string_view::find_last_not_of, basic_string_view::_M_check)
(basic_string_view::_M_limit, operator==, operator!=, operator<)
(operator>, operator<=, operator>=): Likewise.
* testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
char/1.cc: Repeat tests in constexpr context.
* testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
wchar_t/1.cc: Likewise.
* testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
char/1.cc: Likewise.
* testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
wchar_t/1.cc: Likewise.
* testsuite/21_strings/basic_string_view/operations/find/char/1.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operations/find/char/2.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operations/find/char/3.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operations/find/wchar_t/3.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operators/char/2.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
Likewise.
* testsuite/21_strings/basic_string_view/range_access/char/1.cc: Test
cbegin, cend, rbegin, rend, crbegin and crend.
* testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
Likewise.
* testsuite/21_strings/basic_string_view/operations/compare/char/1.cc:
Remove trailing whitespace.
* testsuite/21_strings/basic_string_view/operations/compare/wchar_t/
1.cc: Likewise.
* testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
New.
* testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
New.
* testsuite/21_strings/basic_string_view/operations/compare/char/2.cc:
New.
* testsuite/21_strings/basic_string_view/operations/compare/wchar_t/
2.cc: New.

From-SVN: r251988

xtensa: fix PR target/82181

2017-09-11  Max Filippov  <jcmvbkbc@gmail.com>
gcc/
* config/xtensa/xtensa.c (xtensa_mem_offset): Check that both
words of E_DImode object are reachable by xtensa_uimm8x4 access.

From-SVN: r251986

re PR libstdc++/71500 (regex::icase only works on first character in a range)

PR libstdc++/71500
* include/bits/regex_executor.tcc: Support icase in regex_tratis<...>
for back reference matches.
* testsuite/28_regex/regression.cc: Test case.

From-SVN: r251982

Adjust test to pass with old std::string

* testsuite/21_strings/basic_string/lwg2946.cc: Adjust for
compatibility with old COW std::string.

From-SVN: r251981

2017-09-11  Vidya Praveen  <vidyapraveen@arm.com>

Revert r251800 and r251799.

From-SVN: r251980

Add myself as ARM port maintainer

2017-09-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

* MAINTAINERS (Reviewers): Move myself from here...
(CPU Port Maintainers): ... to here.

From-SVN: r251979

[multiple changes]

2017-09-11  Arnaud Charlet  <charlet@adacore.com>

* doc/gnat_ugn/the_gnat_compilation_model.rst: Fix sphinx warning.
* doc/gnat_ugn/platform_specific_information.rst: Remove doc
for no longer supported platforms.
* doc/gnat_ugn/gnat_and_program_execution.rst: Added detailed
description of the semantics for dimensionality analysis.
* gnat_ugn.texi: Regenerated.

2017-09-11  Eric Botcazou  <ebotcazou@adacore.com>

* freeze.adb (Has_Incomplete_Compoent): Delete.
(Freeze_Profile):
Do not inhibit the freezing of the profile of an expression
function here.
(Freeze_Subprogram): Do not re-create extra formals.
* sem_ch6.adb (Analyze_Expression_Function): Always
pre-analyze the expression if the function is not a completion.
(Analyze_Subprogram_Body_Helper): For the body generated
from an expression function that is not a completion, do
not freeze the profile and temporary mask the types declared
outside the expression that are not yet frozen.
* sem_res.adb (Rewrite_Renamed_Operator): Also bail out if invoked
during the pre-analysis of an expression function.

From-SVN: r251978

Removed, no longer used.

From-SVN: r251977

Removed, no longer used.

From-SVN: r251976

gigi.h (enum standard_datatypes): Minor tweak.

* gcc-interface/gigi.h (enum standard_datatypes): Minor tweak.
(gigi): Likewise.

From-SVN: r251974

Restored, removed by mistake.

From-SVN: r251973

Renamed s-thread__ae653.adb

From-SVN: r251972

Removed, no longer used.

From-SVN: r251971

New file.

From-SVN: r251970

Removed, no longer used.

From-SVN: r251969

libgnat: Rename ?-[a-z]*-* into ?-[a-z]*__*

2017-09-11  Jerome Lambourg  <lambourg@adacore.com>

        * libgnat: Rename ?-[a-z]*-* into ?-[a-z]*__*
        * gcc-interface/Makefile.in, gcc-interface/Make-lang.in: Take this
renaming into account.

From-SVN: r251968

lib-xref-spark_specific.adb: Minor rewrite.

2017-09-11  Yannick Moy  <moy@adacore.com>

* lib-xref-spark_specific.adb: Minor rewrite.

From-SVN: r251967

Makefile.in: Take this renaming into account.

2017-09-11  Jerome Lambourg  <lambourg@adacore.com>

* gcc-interface/Makefile.in: Take this renaming into account.

From-SVN: r251966

libgnarl: Rename ?-[a-z]*-* into ?-[a-z]*__*

2017-09-11  Jerome Lambourg  <lambourg@adacore.com>

        * libgnarl: Rename ?-[a-z]*-* into ?-[a-z]*__*
        * gcc-interface/Makefile.in: Take this renaming into account.

From-SVN: r251965

Make HSA resilient to side-effects of split_edge

2017-09-11  Martin Jambor  <mjambor@suse.cz>

PR hsa/82119
* hsa-gen.c (gen_hsa_phi_from_gimple_phi): Process ADDR_EXPRs in
arguments in advance.
* hsa-regalloc.c (naive_process_phi): New parameter predecessors,
use it to find predecessor edges.
(naive_outof_ssa): Collect vector of predecessors.

From-SVN: r251964

Removed.

From-SVN: r251963

* s-auxdec-empty.ads, s-auxdec-empty.adb: Removed, no longer used.

From-SVN: r251962

Update header.

From-SVN: r251961

sem_util.adb (Check_Result_And_Post_State): Do not issue a warning about missing reference to an outcome if...

2017-09-11  Yannick Moy  <moy@adacore.com>

* sem_util.adb (Check_Result_And_Post_State):
Do not issue a warning about missing reference to an outcome if
the subprogram is ghost and has no outputs.
* lib-xref-spark_specific.adb, sem_aggr.adb, sem_aux.ads: Minor
reformatting.

From-SVN: r251960

gnat1drv.adb (Adjust_Global_Switches): Set Check_Validity_Of_Parameters to False in GNATprove mode.

2017-09-11  Yannick Moy  <moy@adacore.com>

* gnat1drv.adb (Adjust_Global_Switches): Set
Check_Validity_Of_Parameters to False in GNATprove mode.
* opt.ads (Check_Validity_Of_Parameters): Document switch to
set option.

From-SVN: r251959

New files, to ease sync between AdaCore and FSF.

From-SVN: r251958