S/390: Add support for vec_shr

gcc/ChangeLog:

2017-09-26  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* config/s390/predicates.md ("const_shift_by_byte_operand"): New
predicate.
* config/s390/vector.md ("*vec_srb<mode>"): Change modes to V_128
and V16QI.
("*vec_slb<mode>"): New insn pattern.
("vec_shr_<mode>"): New expander.
* config/s390/vx-builtins.md ("vec_slb<mode>"): Turn into expander
and force the shift count operand to V16QImode.
("vec_srb<mode>"): Set shift count mode to V16QI.

From-SVN: r253193

S/390: Add widening vector mult lo/hi patterns

Add support for widening vector multiply lo/hi patterns.  These do not
directly match on IBM Z instructions but can be emulated with even/odd
+ vector merge.

gcc/ChangeLog:

2017-09-26  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* config/s390/vector.md ("vec_widen_umult_lo_<mode>")
("vec_widen_umult_hi_<mode>", "vec_widen_smult_lo_<mode>")
("vec_widen_smult_hi_<mode>"): New expander definitions.

From-SVN: r253192

Enable vect testcases on S/390.

Add s390 platform checks where appropriate.

gcc/testsuite/ChangeLog:

2017-09-26  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* lib/target-supports.exp: Enable tests for S/390.

From-SVN: r253191

[ARM] PR82175 - fix -mcpu=native not working correctly.

The new option processing machinery relies on %< rules in the specs to
suppress options that are rewritten.  Suppression appears to be a two
phase process where the option is partially suppressed when %< is
processed and then fully suppressed at the end of the string.  Strings
are separated by commas and there can be multiple strings used to form
DRIVER_SELF_SPECS.

The fix in this case is to separate the driver self specs for ARM into
separate rules as described; this forces the -m{cpu,tune,arch}=native
options to be properly removed before proceeding to the next rule set.

PR target/82175
* config/arm/arm.h (DRIVER_SELF_SPECS): Separate sub-rules with commas.

From-SVN: r253189

re PR tree-optimization/82320 (Compile time hog w/ -O)

2017-09-26  Richard Biener  <rguenther@suse.de>

PR tree-optimization/82320
* tree-ssa-sccvn.c (set_ssa_val_to): Changing undef to undef
isn't a change.

* gcc.dg/torture/pr82320.c: New testcase.

From-SVN: r253188

[testsuite][arm] Fix check_effective_target_vect_hw_misalign check.

2017-09-26  Christophe Lyon  <christophe.lyon@linaro.org>

* lib/target-supports.exp (check_effective_target_vect_hw_misalign):
Fix arm check.

From-SVN: r253187

re PR demangler/82195 (Undemangleable lambda)

PR demangler/82195
* cp-demangle.c (d_encoding): Strip return type when name is a
LOCAL_NAME.
(d_local_name): Strip return type of enclosing TYPED_NAME.
* testsuite/demangle-expected: Add and adjust tests.

From-SVN: r253186

Daily bump.

From-SVN: r253185

rs6000-protos.h (output_probe_stack_range): Update prototype for new argument.

* config/rs6000/rs6000-protos.h (output_probe_stack_range): Update
prototype for new argument.
* config/rs6000/rs6000.c (rs6000_emit_allocate_stack_1): New function,
mostly extracted from rs6000_emit_allocate_stack.
(rs6000_emit_probe_stack_range_stack_clash): New function.
(rs6000_emit_allocate_stack): Call
rs6000_emit_probe_stack_range_stack_clash as needed.
(rs6000_emit_probe_stack_range): Add additional argument
to call to gen_probe_stack_range{si,di}.
(output_probe_stack_range): New.
(output_probe_stack_range_1): Renamed from output_probe_stack_range.
(output_probe_stack_range_stack_clash): New.
(rs6000_emit_prologue): Emit notes into dump file as requested.
* rs6000.md (allocate_stack): Handle -fstack-clash-protection.
(probe_stack_range<P:mode>): Operand 0 is now early-clobbered.
Add additional operand and pass it to output_probe_stack_range.

* lib/target-supports.exp
(check_effective_target_supports_stack_clash_protection): Enable for
rs6000 and powerpc targets.

From-SVN: r253179

re PR tree-optimization/82163 (ICE on valid code at -O3 on x86_64-linux-gnu: in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:707)

PR tree-optimization/82163
* tree-ssa-loop-manip.h (verify_loop_closed_ssa): New parameter.
(checking_verify_loop_closed_ssa): New parameter.
* tree-ssa-loop-manip.c (check_loop_closed_ssa_use): Delete.
(check_loop_closed_ssa_stmt): Delete.
(check_loop_closed_ssa_def, check_loop_closed_ssa_bb): New functions.
(verify_loop_closed_ssa): Check loop closed ssa form for LOOP.
(tree_transform_and_unroll_loop): Check loop closed ssa form only for
changed loops.

gcc/testsuite
* gcc.dg/tree-ssa/pr82163.c: New test.

From-SVN: r253161

BRIGFE fixes:

* brig-builtins.def: Treat HSAIL barrier builtins as
  setjmp/longjump style functions.

* brigfrontend/brig-to-generic.cc: Ensure per WI copies of
  private variables are aligned too.

* rt/workitems.c: Assume the host runtime allocates the work group
  memory.

From-SVN: r253160

lang.opt: Add -Wdo-subscript.

2017-09-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

* lang.opt:  Add -Wdo-subscript.
* frontend-passes.c (do_t): New type.
(doloop_list): Use variable of do_type.
(if_level): Variable to track if levels.
(select_level): Variable to track select levels.
(gfc_run_passes): Initialize i_level and select_level.
(doloop_code): Record current level of if + select
level in doloop_list.  Add seen_goto if there could
be a branch outside the loop. Use different type for
doloop_list.
(doloop_function): Call do_intent and do_subscript; move
functionality of checking INTENT to do_intent.
(insert_index_t): New type, for callback_insert_index.
(callback_insert_index): New function.
(insert_index): New function.
(do_subscript): New function.
(do_intent): New function.
(gfc_code_walker): Keep track of if_level and select_level.
* invoke.texi: Document -Wdo-subscript.

2017-09-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

* gfortran.dg/do_subscript_1.f90: New test.
* gfortran.dg/do_subscript_2.f90: New test.
* gfortran.dg/gomp/associate1.f90: Add out of bounds warning.
* gfortran.dg/predcom-1.f: Adjust loop bounds.
* gfortran.dg/unconstrained_commons.f: Add out of bounds warning.

From-SVN: r253156

Turn CONSTANT_ALIGNMENT into a hook

The definition:

  #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
    (TREE_CODE (EXP) == STRING_CST \
     && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))

was very common, so the patch adds a canned definition for that,
called constant_alignment_word_strings.  Some ports had a variation
that used a port-local FASTEST_ALIGNMENT instead of BITS_PER_WORD;
the patch uses constant_alignment_word_strings if FASTEST_ALIGNMENT
was always BITS_PER_WORD and a port-local hook function otherwise.

2017-09-25  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* target.def (constant_alignment): New hook.
* defaults.h (CONSTANT_ALIGNMENT): Delete.
* doc/tm.texi.in (CONSTANT_ALIGNMENT): Replace with...
(TARGET_CONSTANT_ALIGNMENT): ...this new hook.
* doc/tm.texi: Regenerate.
* targhooks.h (default_constant_alignment): Declare.
(constant_alignment_word_strings): Likewise.
* targhooks.c (default_constant_alignment): New function.
(constant_alignment_word_strings): Likewise.
* builtins.c (get_object_alignment_2): Use targetm.constant_alignment
instead of CONSTANT_ALIGNMENT.
* varasm.c (align_variable, get_variable_align, build_constant_desc)
(force_const_mem): Likewise.
* config/aarch64/aarch64.h (CONSTANT_ALIGNMENT): Delete.
* config/aarch64/aarch64.c (aarch64_constant_alignment): New function.
(aarch64_classify_address): Call it instead of CONSTANT_ALIGNMENT.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/alpha/alpha.h (CONSTANT_ALIGNMENT): Delete commented-out
definition.
* config/arc/arc.h (CONSTANT_ALIGNMENT): Delete.
* config/arc/arc.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/arm/arm.h (CONSTANT_ALIGNMENT_FACTOR): Delete.
(CONSTANT_ALIGNMENT): Likewise.
* config/arm/arm.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(arm_constant_alignment): New function.
* config/bfin/bfin.h (CONSTANT_ALIGNMENT): Delete.
* config/bfin/bfin.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/cr16/cr16.h (CONSTANT_ALIGNMENT): Delete.
* config/cr16/cr16.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/cris/cris.h (CONSTANT_ALIGNMENT): Delete.
* config/cris/cris.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(cris_constant_alignment): New function.
* config/epiphany/epiphany.h (CONSTANT_ALIGNMENT): Delete.
* config/epiphany/epiphany.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(epiphany_constant_alignment): New function.
* config/fr30/fr30.h (CONSTANT_ALIGNMENT): Delete.
* config/fr30/fr30.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/frv/frv.h (CONSTANT_ALIGNMENT): Delete.
* config/frv/frv.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/ft32/ft32.h (CONSTANT_ALIGNMENT): Delete.
* config/ft32/ft32.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/i386/i386.h (CONSTANT_ALIGNMENT): Delete.
* config/i386/i386-protos.h (ix86_constant_alignment): Delete.
* config/i386/i386.c (ix86_constant_alignment): Make static.
Use the same interface as the target hook.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/ia64/ia64.h (CONSTANT_ALIGNMENT): Delete.
* config/ia64/ia64.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/iq2000/iq2000.h (CONSTANT_ALIGNMENT): Delete.
* config/iq2000/iq2000.c (iq2000_constant_alignment): New function.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/lm32/lm32.h (CONSTANT_ALIGNMENT): Delete.
* config/lm32/lm32.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/m32r/m32r.h (CONSTANT_ALIGNMENT): Delete.
* config/m32r/m32r.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/mcore/mcore.h (CONSTANT_ALIGNMENT): Delete.
* config/mcore/mcore.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/microblaze/microblaze.h (CONSTANT_ALIGNMENT): Delete.
* config/microblaze/microblaze.c (microblaze_constant_alignment):
New function.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/mips/mips.h (CONSTANT_ALIGNMENT): Delete.
* config/mips/mips.c (mips_constant_alignment): New function.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/mmix/mmix.h (CONSTANT_ALIGNMENT): Delete.
* config/mmix/mmix-protos.h (mmix_constant_alignment): Delete.
* config/mmix/mmix.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(mmix_constant_alignment): Make static.  Use the same interface
as the target hook.
* config/moxie/moxie.h (CONSTANT_ALIGNMENT): Delete.
* config/moxie/moxie.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/nios2/nios2.h (CONSTANT_ALIGNMENT): Delete.
* config/nios2/nios2.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/pa/pa.h (CONSTANT_ALIGNMENT): Delete.
* config/pa/pa.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/powerpcspe/powerpcspe.h (CONSTANT_ALIGNMENT): Delete.
* config/powerpcspe/powerpcspe.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(rs6000_constant_alignment): New function.
* config/riscv/riscv.h (CONSTANT_ALIGNMENT): Delete.
* config/riscv/riscv.c (riscv_constant_alignment): New function.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/rs6000/rs6000.h (CONSTANT_ALIGNMENT): Delete.
* config/rs6000/rs6000.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(rs6000_constant_alignment): New function.
* config/s390/s390.h (CONSTANT_ALIGNMENT): Delete.
* config/s390/s390.c (s390_constant_alignment): New function.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/sh/sh.h (CONSTANT_ALIGNMENT): Delete.
* config/sh/sh.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/sparc/sparc.h (CONSTANT_ALIGNMENT): Delete.
* config/sparc/sparc.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(sparc_constant_alignment): New function.
* config/spu/spu.h (CONSTANT_ALIGNMENT): Delete.
* config/spu/spu.c (spu_constant_alignment): New function.
(TARGET_CONSTANT_ALIGNMENT): Redefine.
* config/stormy16/stormy16.h (CONSTANT_ALIGNMENT): Delete.
* config/stormy16/stormy16.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/tilegx/tilegx.h (CONSTANT_ALIGNMENT): Delete.
* config/tilegx/tilegx.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/tilepro/tilepro.h (CONSTANT_ALIGNMENT): Delete.
* config/tilepro/tilepro.c (TARGET_CONSTANT_ALIGNMENT): Redefine to
constant_alignment_word_strings.
* config/visium/visium.h (CONSTANT_ALIGNMENT): Delete.
* config/visium/visium.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(visium_constant_alignment): New function.
* config/xtensa/xtensa.h (CONSTANT_ALIGNMENT): Delete.
* config/xtensa/xtensa.c (TARGET_CONSTANT_ALIGNMENT): Redefine.
(xtensa_constant_alignment): New function.
* system.h (CONSTANT_ALIGNMENT): Poison.

From-SVN: r253154

re PR c/81854 (weak alias of an incompatible symbol accepted)

PR c/81854
* src/c++98/complex_io.cc (_GLIBCXX_LDBL_COMPAT): Declare alias
target as a C++ function with no prototype.

From-SVN: r253153

rs6000.c (rs6000_gimple_fold_builtin): Add handling for early folding of vector stores (ALTIVEC_BUILTIN_ST_*).

[gcc]

2017-09-25  Will Schmidt  <will_schmidt@vnet.ibm.com>

* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add handling
for early folding of vector stores (ALTIVEC_BUILTIN_ST_*).
(rs6000_builtin_valid_without_lhs): New helper function.
* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
Remove obsoleted code for handling ALTIVEC_BUILTIN_VEC_ST.

From-SVN: r253152

fold-vec-st-char.c: New.

[gcc/testsuite]

2017-09-25  Will Schmidt  <will_schmidt@vnet.ibm.com>

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

From-SVN: r253151

Change permute index type to unsigned short

This patch changes the element type of (auto_)vec_perm_indices from
unsigned char to unsigned short.  This is needed for fixed-length
2048-bit SVE.  (SVE is variable-length by default, but it's possible
to ask for specific vector lengths if you want to.)

2017-09-25  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* target.h (vec_perm_indices): Use unsigned short rather than
unsigned char.
(auto_vec_perm_indices): Likewise.
* config/aarch64/aarch64.c (aarch64_vectorize_vec_perm_const_ok):
Use unsigned int rather than unsigned char.
* config/arm/arm.c (arm_vectorize_vec_perm_const_ok): Likewise.

From-SVN: r253150

cfgloop.h (sort_sibling_loops): Declare.

2017-09-25  Richard Biener  <rguenther@suse.de>

* cfgloop.h (sort_sibling_loops): Declare.
* cfgloop.c (sort_sibling_loops_cmp): New helper.
(sort_sibling_loops): New function sorting the sibling loop list
in RPO order.
* graphite.c (graphite_transform_loops): Sort sibling loops.

From-SVN: r253149

Update interface to TARGET_VECTORIZE_VEC_PERM_CONST_OK

This patch makes TARGET_VECTORIZE_VEC_PERM_CONST_OK take the permute
vector in the form of a vec_perm_indices instead of an unsigned char *.
It follows on from the recent patch that did the same in target-independent
code.

It was easy to make ARM and AArch64 use vec_perm_indices internally
as well, and converting AArch64 helps with SVE.  I did try doing the same
for the other ports, but the surgery needed was much more invasive and
much less obviously correct.

2017-09-22  Richard Sandiford  <richard.sandifird@linaro.org>

gcc/
* target.def (vec_perm_const_ok): Change sel parameter to
vec_perm_indices.
* optabs-query.c (can_vec_perm_p): Update accordingly.
* doc/tm.texi: Regenerate.
* config/aarch64/aarch64.c (expand_vec_perm_d): Change perm to
auto_vec_perm_indices and remove separate nelt field.
(aarch64_evpc_trn, aarch64_evpc_uzp, aarch64_evpc_zip)
(aarch64_evpc_ext, aarch64_evpc_rev, aarch64_evpc_dup)
(aarch64_evpc_tbl, aarch64_expand_vec_perm_const_1)
(aarch64_expand_vec_perm_const): Update accordingly.
(aarch64_vectorize_vec_perm_const_ok): Likewise.  Change sel
to vec_perm_indices.
* config/arm/arm.c (expand_vec_perm_d): Change perm to
auto_vec_perm_indices and remove separate nelt field.
(arm_evpc_neon_vuzp, arm_evpc_neon_vzip, arm_evpc_neon_vrev)
(arm_evpc_neon_vtrn, arm_evpc_neon_vext, arm_evpc_neon_vtbl)
(arm_expand_vec_perm_const_1, arm_expand_vec_perm_const): Update
accordingly.
(arm_vectorize_vec_perm_const_ok): Likewise.  Change sel
to vec_perm_indices.
* config/i386/i386.c (ix86_vectorize_vec_perm_const_ok): Change
sel to vec_perm_indices.
* config/ia64/ia64.c (ia64_vectorize_vec_perm_const_ok): Likewise.
* config/mips/mips.c (mips_vectorize_vec_perm_const_ok): Likewise.
* config/powerpcspe/powerpcspe.c (rs6000_vectorize_vec_perm_const_ok):
Likewise.
* config/rs6000/rs6000.c (rs6000_vectorize_vec_perm_const_ok):
Likewise.

From-SVN: r253148

[PR82155] Fix crash in dwarf2out_abstract_function

This patch is an attempt to fix the crash reported in PR82155.

When generating a C++ class method for a class that is itself nested in
a class method, dwarf2out_early_global_decl currently leaves the
existing context DIE as it is if it already exists.  However, it is
possible that this call happens at a point where this context DIE is
just a declaration that is itself not located in its own context.

From there, if dwarf2out_early_global_decl is not called on any of the
FUNCTION_DECL in the context chain, DIEs will be left badly scoped and
some (such as the nested method) will be removed by the type pruning
machinery.  As a consequence, dwarf2out_abstract_function will will
crash when called on the corresponding DECL because it asserts that the
DECL has a DIE.

This patch fixes this crash making dwarf2out_early_global_decl process
context DIEs the same way we process abstract origins for FUNCTION_DECL:
if the corresponding DIE exists but is only a declaration, call
dwarf2out_decl anyway on it so that it is turned into a more complete
DIE and so that it is relocated in the proper context.

Bootstrapped and regtested on x86_64-linux.

gcc/

PR debug/82155
* dwarf2out.c (dwarf2out_early_global_decl): Call dwarf2out_decl
on the FUNCTION_DECL function context if it has a DIE that is a
declaration.

gcc/testsuite/

* g++.dg/pr82155.C: New testcase.

From-SVN: r253147

re PR tree-optimization/82285 (Optimizing error when using enumeration)

2017-09-25  Richard Biener  <rguenther@suse.de>

PR tree-optimization/82285
* tree-vect-patterns.c (vect_recog_bool_pattern): Also handle
enumeral types.

* gcc.dg/torture/pr82285.c: New testcase.

From-SVN: r253146

[nvptx] Add exit after call to noreturn function

2017-09-25  Tom de Vries  <tom@codesourcery.com>

PR target/80035
PR target/81069
* config/nvptx/nvptx.c (nvptx_output_call_insn): Add exit after call to
noreturn function.

From-SVN: r253145

[multiple changes]

2017-09-25  Justin Squirek  <squirek@adacore.com>

* aspects.adb, bindgen.adb, clean.adb, erroutc.adb, exp_ch13.adb,
exp_dbug.adb, exp_unst.adb, exp_util.adb, frontend.adb, gnat1drv.adb,
gnatdll.adb, gnatlink.adb, gnatls.adb, gnatname.adb, gnatxref.adb,
gnatfind.adb, libgnat/a-cfhama.ads, libgnat/a-exetim__mingw.adb,
libgnat/a-strmap.adb, libgnat/a-teioed.adb, libgnat/g-alvety.ads,
libgnat/g-expect.adb, libgnat/g-regist.adb, libgnat/g-socket.adb,
libgnat/g-socthi__mingw.ads, libgnat/s-stausa.adb,
libgnat/s-tsmona__linux.adb, libgnat/s-tsmona__mingw.adb,
libgnarl/s-taenca.adb, libgnarl/s-tassta.adb, libgnarl/s-tarest.adb,
libgnarl/s-tpobop.adb, make.adb, makeusg.adb, namet.adb, output.ads,
put_scos.adb, repinfo.adb, rtsfind.adb, scn.ads, sem_attr.adb,
sem_aux.ads, sem_warn.ads, targparm.adb, xr_tabls.adb, xref_lib.adb:
Removal of ineffective use-clauses.
* exp_ch9.adb (Is_Simple_Barrier_Name): Check for false positives with
constant folded barriers.
* ghost.adb, sprint.adb, sem_ch10.adb, sem_warn.adb: Change access to
Subtype_Marks and Names list in use-clause nodes to their new singular
counterparts (e.g. Subtype_Mark, Name).
* par.adb, par-ch8.adb (Append_Use_Clause): Created to set
Prev_Ids and More_Ids in use-clause nodes.
(P_Use_Clause): Modify to take a list as a parameter.
(P_Use_Package_Clause, P_Use_Type_Clause): Divide names and
subtype_marks within an aggregate use-clauses into individual clauses.
* par-ch3.adb, par-ch10.adb, par-ch12.adb: Trivally modify call to
P_Use_Clause to match its new behavior.
* sem.adb (Analyze): Mark use clauses for non-overloaded entities.
* sem_ch4.adb (Try_One_Interp): Add sanity check to handle previous
errors.
* sem_ch6.adb (Analyze_Generic_Subprogram_Body,
Analyze_Subprogram_Body_Helper): Update use clause chain at the end of
the declarative region.
* sem_ch7.adb (Analyze_Package_Body_Helper): Update use clause chain
after analysis (Analyze_Package_Specification): Update use clause chain
when there is no body.
* sem_ch8.ads, sem_ch8.adb (Analyze_Use_Package, Analyze_Use_Type): Add
parameter to determine weither the installation of scopes should also
propagate on the use-clause "chain".
(Mark_Use_Clauses): Created to traverse use-clause chains and determine
what constitutes a valid "use" of a clause.
(Update_Use_Clause_Chain): Created to aggregate common machinary used
to clean up use-clause chains (and warn on ineffectiveness) at the end
of declaritive regions.
* sem_ch8.adb (Analyze_Package_Name): Created to perform analysis on a
package name from a use-package clause.
(Analyze_Package_Name_List): Created to perform analysis on a list of
package names (similar to Analyze_Package_Name).
(Find_Most_Prev): Created to traverse to the beginning of a given
use-clause chain.
(Most_Decendant_Use_Clause): Create to identify which clause from a
given set is highest in scope (not always the most prev).
(Use_One_Package, Use_One_Type): Major cleanup and reorganization to
handle the new chaining algorithm, also many changes related to
redundant clauses. A new parameter has also been added to force
installation to handle certain cases.
* sem_ch9.adb (Analyze_Entry_Body, Analyze_Protected_Body,
Analyze_Task_Body): Mark use clauses on relevant entities.
* sem_ch10.adb, sem_ch10.ads (Install_Context_Clauses,
Install_Parents): Add parameter to determine weither the installation
of scopes should also propagate on the use-clause "chain".
* sem_ch12.adb (Inline_Instance_Body): Add flag in call to
Install_Context to avoid redundant chaining of use-clauses.
* sem_ch13.adb: Minor reformatting.
* sem_res.adb (Resolve): Mark use clauses on operators.
(Resolve_Call, Resolve_Entity_Name): Mark use clauses on relevant
entities.
* sinfo.adb, sinfo.ads (Is_Effective_Use_Clause,
Set_Is_Effective_Use_Clause): Add new flag to N_Use_Clause nodes to
represent any given clause's usage/reference/necessity.
(Prev_Use_Clause, Set_Prev_Use_Clause): Add new field to N_Use_Clause
nodes to allow loose chaining of redundant clauses.
(Set_Used_Operations, Set_Subtype_Mark, Set_Prev_Ids, Set_Names,
Set_More_Ids, Set_Name): Modify set procedure calls to reflect
reorganization in node fields.
* types.ads (Source_File_Index): Adjust index bounds.
(No_Access_To_Source_File): New constant.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

* sem_ch13.adb (Analyze_One_Aspect): In ASIS mode make a full copy of
the expression to be used in the generated attribute specification
(rather than relocating it) to avoid resolving a potentially malformed
tree when the expression is resolved through an ASIS-specific call to
Resolve_Aspect_Expressions.  This manifests itself as a crash on a
function with parameter associations.

From-SVN: r253144

[multiple changes]

2017-09-25  Yannick Moy  <moy@adacore.com>

* exp_spark.adb (Expand_SPARK_Indexed_Component,
Expand_SPARK_Selected_Component): New procedures to insert explicit
dereference if required.
(Expand_SPARK): Call the new procedures.

2017-09-25  Patrick Bernardi  <bernardi@adacore.com>

* libgnat/a-stwiun.adb, libgnat/s-stchop__vxworks.adb,
libgnat/g-socthi__vxworks.ads, libgnat/a-stzunb.adb,
libgnat/a-strunb.adb, libgnarl/s-osinte__lynxos178.adb,
libgnarl/s-intman__vxworks.adb, libgnarl/s-osinte__darwin.adb,
libgnarl/a-exetim__darwin.adb: Removed ineffective use-clauses.

2017-09-25  Vasiliy Fofanov  <fofanov@adacore.com>

* adaint.c (win32_wait): Properly handle error and take into account
the WIN32 limitation on the number of simultaneous wait objects.

2017-09-25  Yannick Moy  <moy@adacore.com>

* sem_ch3.adb (Constant_Redeclaration): Do not insert a call to the
invariant procedure in GNATprove mode.
* sem_ch5.adb (Analyze_Assignment): Likewise.

From-SVN: r253143

graphite-optimize-isl.c (optimize_isl): Fail and dump if ISL errors other than isl_error_quota happen.

2017-09-25  Richard Biener  <rguenther@suse.de>

* graphite-optimize-isl.c (optimize_isl): Fail and dump if
ISL errors other than isl_error_quota happen.  Dump if the
schedule is the same.
* graphite-sese-to-poly.c (build_poly_scop): Fail on ISL
errors instead of aborting inside ISL.

From-SVN: r253142

[multiple changes]

2017-09-25  Piotr Trojanek  <trojanek@adacore.com>

* adabkend.adb (Call_Back_End): Fix wording of "front-end" and
"back-end" in comments.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

* exp_ch6.adb (Expand_Call_Helper): The extra accessibility check in a
call that appears in a classwide precondition and that mentions an
access formal of the subprogram, must use the accessibility level of
the actual in the call. This is one case in which a reference to a
formal parameter appears outside of the body of the subprogram.

From-SVN: r253141

[multiple changes]

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

* sem_res.adb (Replace_Actual_Discriminants): Replace a discriminant
for GNATprove.
(Resolve_Entry): Clean up predicate

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

* sem_prag.adb (Analyze_Constituent): Raise Unrecoverable_Error rather
than Program_Error because U_E is more in line with respect to the
intended behavior.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

* sem_ch13.adb (Resolve_Aspect_Expressions): The expression for aspect
Storage_Size does not freeze, and thus can include references to
deferred constants.

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

* exp_spark.adb (Expand_SPARK_Potential_Renaming): Do not process a
reference when it appears within a pragma of no significance to SPARK.
(In_Insignificant_Pragma): New routine.
* sem_prag.ads: Add new table Pragma_Significant_In_SPARK.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

* sem_ch12.adb (Analyze_Associations, case N_Formal_Package): If the
actual is a renaming, indicate that it is the renamed package that must
be frozen before the instantiation.

2017-09-25  Yannick Moy  <moy@adacore.com>

* doc/gnat_ugn/gnat_and_program_execution.rst: Fix typo in description
of dimensionality system in GNAT UG.
* gnat_ugn.texi: Regenerate.

2017-09-25  Yannick Moy  <moy@adacore.com>

* gnat1drv.adb: Call Check_Safe_Pointers from the frontend in
GNATprove_Mode when switch -gnatdF used.

2017-09-25  Piotr Trojanek  <trojanek@adacore.com>

* adabkend.adb (Call_Back_End): Reset Current_Error_Node when starting
the backend.

From-SVN: r253140

exp_imgv.adb (Expand_Image_Attribute): Disable the optimized expansion of user-defined enumeration types when...

gcc/ada/

2017-09-25  Javier Miranda  <miranda@adacore.com>

* exp_imgv.adb (Expand_Image_Attribute): Disable the optimized
expansion of user-defined enumeration types when the generation of
names for enumeration literals is suppressed.

2017-09-25  Gary Dismukes  <dismukes@adacore.com>

* libgnarl/s-taprop__linux.adb: Minor reformatting.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

* sem_ch13.adb (Resolve_Aspect_Expressions): Do not resolve identifiers
that appear as selector names of parameter associations, as these are
never resolved by visibility.

2017-09-25  Justin Squirek  <squirek@adacore.com>

* sem_res.adb (Resolve_Entry): Generate reference for index entities.

gcc/testsuite/

2017-09-25  Justin Squirek  <squirek@adacore.com>

* gnat.dg/entry_family.adb: New testcase

From-SVN: r253139

[multiple changes]

2017-09-25  Doug Rupp  <rupp@adacore.com>

* libgnarl/s-taprop__linux.adb (Compute_Base_Monotonic_Clock): Refine.

2017-09-25  Javier Miranda  <miranda@adacore.com>

* exp_imgv.adb (Is_User_Defined_Enumeration_Type): New subprogram.
(Expand_User_Defined_Enumeration_Image): New subprogram.
(Expand_Image_Attribute): Enable speed-optimized expansion of
user-defined enumeration types when we are compiling with optimizations
enabled.

2017-09-25  Piotr Trojanek  <trojanek@adacore.com>

* sem_util.adb (Has_Null_Abstract_State): Remove, as an exactly same
routine is already provided by Einfo.
* einfo.adb (Has_Null_Abstract_State): Replace with the body from
Sem_Util, which had better comments and avoided double calls to
Abstract_State.

From-SVN: r253138

[Patch, Darwin] Fix PR80556 by linking the system unwinder ahead of libgcc_eh.

PR target/80556
* config/i386/darwin.h (REAL_LIB_SPEC): New; put libSystem ahead
of libgcc_eh for m64.
* config/i386/darwin64.h: Likewise.

/* WORKAROUND pr80556:
   For x86_64 Darwin10 and later, the unwinder is in libunwind (redirected
   from libSystem).  This doesn't use the keymgr (see keymgr.c) and therefore
   the calls that libgcc makes to obtain the KEYMGR_GCC3_DW2_OBJ_LIST are not
   updated to include new images, and might not even be valid for a single
   image.
   Therefore, for 64b exes at least, we must use the libunwind implementation,
   even when static-libgcc is specified.  We put libSystem first so that
   unwinder symbols are satisfied from there.

From-SVN: r253137

[multiple changes]

2017-09-25  Bob Duff  <duff@adacore.com>

* exp_ch3.adb: Rename Comp_Type_Simple to be Comp_Simple_Init.

2017-09-25  Doug Rupp  <rupp@adacore.com>

* libgnarl/s-taprop__linux.adb (Base_Monotonic_Clock): New variable.
(Compute_Base_Monotonic_Clock): New function.
(Timed_Sleep): Adjust to use Base_Monotonic_Clock.
(Timed_Delay): Likewise.
(Monotonic_Clock): Likewise.
* s-oscons-tmplt.c (CLOCK_MONOTONIC): Use on Linux.

From-SVN: r253136

[multiple changes]

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

* sem_ch12.adb (Save_References_In_Aggregate): Small correction to
previous change.

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

* exp_ch5.adb, sem_ch4.adb, sem_ch13.adb, sem_attr.adb, exp_ch3.adb:
Minor reformatting.

From-SVN: r253135

re PR debug/82144 (ICE in add_dwarf_attr with alignas)

2017-09-25  Richard Biener  <rguenther@suse.de>

PR middle-end/82144
* dwarf2out.c (gen_enumeration_type_die): Do not add alignment
attribute for incomplete types nor twice for complete ones.

From-SVN: r253134

Add myself as nvptx maintainer

2017-09-25  Tom de Vries  <tom@codesourcery.com>

* MAINTAINERS (CPU Port Maintainers): Add myself as nvptx maintainer.

From-SVN: r253133

Remove unnecessary fold_convert in gfc_(un)likely

This patch removes an unnecessary fold_convert to boolean_type_node at
the end of gfc_likely and gfc_unlikely.  It makes no difference to the
generated code, but makes tree dumps a little bit cleaner.

2017-09-25  Janne Blomqvist  <jb@gcc.gnu.org>
        * trans.c (gfc_unlikely): Remove unnecessary fold_convert.
        (gfc_likely): Likewise.

Regtested on x86_64-pc-linux-gnu.

From-SVN: r253132

Daily bump.

From-SVN: r253131

x32: Encode %esp as %rsp to avoid 0x67 prefix

Since the upper 32 bits of stack register are always zero for x32, we
can encode %esp as %rsp to avoid 0x67 prefix in address if there is no
index or base register.

gcc/

PR target/82267
* config/i386/i386.c (ix86_print_operand_address_as): Encode
%esp as %rsp to avoid 0x67 prefix if there is no index or base
register.

gcc/testsuite/

PR target/82267
* gcc.target/i386/pr82267.c: New test.

From-SVN: r253127

re PR fortran/66328 (Wrong initialization of derived-type DATA)

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
PR fortran/66328

* gfortran.dg/data_derived_1.f90: New test.

From-SVN: r253126

re PR fortran/54633 (ICEs and reject valid with MINLOC/MINVAL (MAXLOC/MAXVAL) due to lacking compile-time simplification)

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/54633
* gfortran.dg/intrinsic_bounds_1.f90: New test.
* gfortran.dg/intrinsic_param_1.f90: New test.

From-SVN: r253125

+2017-09-24  Dominique d'Humieres  <dominiq@lps.ens.fr>

PR libgfortran/79612
* runtime/bounds.c: Use GFC_ASSERT.

From-SVN: r253124

re PR fortran/80118 (ICE with zero size parameter array)

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
    Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/80118
* expr.c (gfc_get_full_arrayspec_from_expr): If there is
no symtree, set array spec to NULL.

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
    Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/80118
* gfortran.dg/zero_sized_7.f90: New test.

Co-Authored-By: Steven G. Kargl <kargl@gcc.gnu.org>
From-SVN: r253123

Daily bump.

From-SVN: r253122

re PR bootstrap/82306 (Revision r253089 breaks bootstrap on Darwin)

PR bootstrap/82306
* config/i386/i386.opt (mprefer-avx256): Use
ix86_target_flags variable.
* config/i386/i386.c (ix86_target_string): Move
-mprefer-avx256 to flag2_opts.

From-SVN: r253118

re PR fortran/82143 (add a -fdefault-real-16 flag)

2017-09-23  Janus Weil  <janus@gcc.gnu.org>

PR fortran/82143
* lang.opt: Add the options -fdefault-real-10 and -fdefault-real-16.
Rename flag_default_real to flag_default_real_8.
* invoke.texi: Add documentation.
* module.c (use_iso_fortran_env_module): flag_default_real is renamed.
* trans-types.c (gfc_init_kinds): Implement the flags
-fdefault-real-10 and -fdefault-real-16. Make -fdefault-double-8 work
without -fdefault-real-8.

2017-09-23  Janus Weil  <janus@gcc.gnu.org>

PR fortran/82143
* gfortran.dg/promotion_3.f90: New test case.
* gfortran.dg/promotion_4.f90: New test case.

From-SVN: r253117

PR target/82196 addendum: Fix Darwin build breakage and test FAILS on Solaris

gcc/testsuite:
* gcc.target/i386/pr82196-1.c: (b): Remove volatile asm.
* gcc.target/i386/pr82196-2.c: (b): Likewise.

libgcc:
* configure.ac: Add Check for HAVE_AS_AVX.
* config.in: Regenerate.
* configure: Likewise.
* config/i386/i386-asm.h: Include auto-target.h from libgcc.
(SSE_SAVE, SSE_RESTORE): Emit .byte sequence for !HAVE_AS_AVX.
Correct out-of-date comments.

From-SVN: r253116

Daily bump.

From-SVN: r253114

re PR bootstrap/81926 (go/parse.o differs between stage2 and stage3)

PR bootstrap/81926
* cp-objcp-common.c (cp_get_debug_type): Do only one lookup.

From-SVN: r253109

re PR middle-end/35691 (Missed (a == 0) && (b == 0) into (a|(typeof(a)(b)) == 0 when the types don't match)

PR middle-end/35691
* match.pd: Simplify x == -1 & y == -1 into (x & y) == -1
and x != -1 | y != -1 into (x & y) != -1.

* gcc.dg/pr35691-1.c: Use -fdump-tree-forwprop1-details
instead of -fdump-tree-forwprop-details in dg-options.
* gcc.dg/pr35691-2.c: Likewise.
* gcc.dg/pr35691-3.c: New test.
* gcc.dg/pr35691-4.c: New test.

From-SVN: r253107

re PR sanitizer/81929 (exponential slowdown in undefined behavior sanitizer for streaming)

PR sanitizer/81929
* tree.c (struct replace_placeholders_t): Add pset field.
(replace_placeholders_r): Call cp_walk_tree with d->pset as
last argument instead of NULL.  Formatting fix.
(replace_placeholders): Add pset variable, add its address
into data.  Pass &pset instead of NULL to cp_walk_tree.

* g++.dg/ubsan/pr81929.C: New test.

From-SVN: r253106

debug/xcoff,cmd: add XCOFF support

    Reviewed-on: https://go-review.googlesource.com/64592

From-SVN: r253105

config.gcc: Add new case statement to set default_gnu_indirect_function.

2017-09-22  Steve Ellcey  <sellcey@cavium.com>

* config.gcc: Add new case statement to set
default_gnu_indirect_function.  Remove it from x86_64-*-linux*,
i[34567]86-*, powerpc*-*-linux*spe*, powerpc*-*-linux*, s390-*-linux*,
s390x-*-linux* case statements.   Added aarch64 to the list of
supported architectures.

From-SVN: r253104

PR82289: Computing peeling costs for irrelevant drs

This PR shows that we weren't filtering out irrelevant stmts in
vect_get_peeling_costs_all_drs (unlike related loops in which
we iterate over all datarefs).

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR tree-optimization/82289
* tree-vect-data-refs.c (vect_get_peeling_costs_all_drs): Check
STMT_VINFO_RELEVANT_P.

gcc/testsuite/
PR tree-optimization/82289
* gcc.dg/vect/pr82289.c: New test.

From-SVN: r253103

range_int_cst_p handling in extract_range_from_binary_expr_1

extract_range_from_binary_expr_1 had:

      if (range_int_cst_p (&vr0)
          && range_int_cst_p (&vr1)
          && TYPE_OVERFLOW_WRAPS (expr_type))
        ...
      ...
      extract_range_from_multiplicative_op_1 (vr, code, &vr0, &vr1);

but extract_range_from_multiplicative_op_1 also requires range_int_cst_p.
I think we should bail out if either range isn't a constant.

This might only be theoretical with current sources, but it's needed
once polynomial constants are added.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* tree-vrp.c (extract_range_from_multiplicative_op_1): Assert
for VR_RANGE only; don't allow VR_ANTI_RANGE.
(extract_range_from_binary_expr_1): Don't call
extract_range_from_multiplicative_op_1 if !range_int_cst_p.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253102

Let the target choose a vectorisation alignment

The vectoriser aligned vectors to TYPE_ALIGN unconditionally, although
there was also a hard-coded assumption that this was equal to the type
size.  This was inconvenient for SVE for two reasons:

- When compiling for a specific power-of-2 SVE vector length, we might
  want to align to a full vector.  However, the TYPE_ALIGN is governed
  by the ABI alignment, which is 128 bits regardless of size.

- For vector-length-agnostic code it doesn't usually make sense to align,
  since the runtime vector length might not be a power of two.  Even for
  power of two sizes, there's no guarantee that aligning to the previous
  16 bytes will be an improveent.

This patch therefore adds a target hook to control the preferred
vectoriser (as opposed to ABI) alignment.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* target.def (preferred_vector_alignment): New hook.
* doc/tm.texi.in (TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT): New
hook.
* doc/tm.texi: Regenerate.
* targhooks.h (default_preferred_vector_alignment): Declare.
* targhooks.c (default_preferred_vector_alignment): New function.
* tree-vectorizer.h (dataref_aux): Add a target_alignment field.
Expand commentary.
(DR_TARGET_ALIGNMENT): New macro.
(aligned_access_p): Update commentary.
(vect_known_alignment_in_bytes): New function.
* tree-vect-data-refs.c (vect_calculate_required_alignment): New
function.
(vect_compute_data_ref_alignment): Set DR_TARGET_ALIGNMENT.
Calculate the misalignment based on the target alignment rather than
the vector size.
(vect_update_misalignment_for_peel): Use DR_TARGET_ALIGMENT
rather than TYPE_ALIGN / BITS_PER_UNIT to update the misalignment.
(vect_enhance_data_refs_alignment): Mask the byte misalignment with
the target alignment, rather than masking the element misalignment
with the number of elements in a vector.  Also use the target
alignment when calculating the maximum number of peels.
(vect_find_same_alignment_drs): Use vect_calculate_required_alignment
instead of TYPE_ALIGN_UNIT.
(vect_duplicate_ssa_name_ptr_info): Remove stmt_info parameter.
Measure DR_MISALIGNMENT relative to DR_TARGET_ALIGNMENT.
(vect_create_addr_base_for_vector_ref): Update call accordingly.
(vect_create_data_ref_ptr): Likewise.
(vect_setup_realignment): Realign by ANDing with
-DR_TARGET_MISALIGNMENT.
* tree-vect-loop-manip.c (vect_gen_prolog_loop_niters): Calculate
the number of peels based on DR_TARGET_ALIGNMENT.
* tree-vect-stmts.c (get_group_load_store_type): Compare the gap
with the guaranteed alignment boundary when deciding whether
overrun is OK.
(vectorizable_mask_load_store): Interpret DR_MISALIGNMENT
relative to DR_TARGET_ALIGNMENT instead of TYPE_ALIGN_UNIT.
(ensure_base_align): Remove stmt_info parameter.  Get the
target base alignment from DR_TARGET_ALIGNMENT.
(vectorizable_store): Update call accordingly.   Interpret
DR_MISALIGNMENT relative to DR_TARGET_ALIGNMENT instead of
TYPE_ALIGN_UNIT.
(vectorizable_load): Likewise.

gcc/testsuite/
* gcc.dg/vect/vect-outer-3a.c: Adjust dump scan for new wording
of alignment message.
* gcc.dg/vect/vect-outer-3a-big-array.c: Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253101

Fix testsuite fallout from r252976.

gcc/testsuite/ChangeLog:

PR c/81854
* gcc.target/i386/pr80732.c: Correct a type error.

From-SVN: r253100

Add a vect_get_scalar_dr_size helper function

This patch adds a helper function for getting the number of bytes
accessed by an unvectorised data reference, which helps when general
modes have a variable size.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* tree-vectorizer.h (vect_get_scalar_dr_size): New function.
* tree-vect-data-refs.c (vect_update_misalignment_for_peel): Use it.
(vect_enhance_data_refs_alignment): Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253099

[arm] Improve error checking in parsecpu.awk

This patch adds a bit more error checking to parsecpu.awk to ensure
that statements are not missing arguments or have excess arguments
beyond those permitted.  It also slightly improves the handling of
errors so that we terminate properly if parsing fails and be as
helpful as we can while in the parsing phase.

2017-09-22  Richard Earnshaw  <richard.earnshaw@arm.com>

* config/arm/parsecpu.awk (fatal): Note that we've encountered an
error.  Only quit immediately if parsing is complete.
(BEGIN): Initialize fatal_err and parse_done.
(begin fpu, end fpu): Check number of arguments.
(begin arch, end arch): Likewise.
(begin cpu, end cpu): Likewise.
(cname, tune for, tune flags, architecture, fpu, option): Likewise.
(optalias): Likewise.

From-SVN: r253098

[arm] auto-generate arm-isa.h from CPU descriptions

This patch autogenerates arm-isa.h from new entries in arm-cpus.in.
This has the primary advantage that it makes the description file more
self-contained, but it also solves the 'array dimensioning' problem
that Tamar recently encountered.  It adds two new constructs to
arm-cpus.in: features and fgroups.  Fgroups are simply a way of naming
a group of feature bits so that they can be referenced together.  We
follow the convention that feature bits are all lower case, while
fgroups are (predominantly) upper case. This is helpful as in some
contexts they share the same namespace. Most of the minor changes in
this patch are related to adopting this new naming convention.

2017-09-22  Richard Earnshaw  <richard.earnshaw@arm.com>

* config.gcc (arm*-*-*): Don't add arm-isa.h to tm_p_file.
* config/arm/arm-isa.h: Delete.  Move definitions to ...
* arm-cpus.in: ... here.  Use new feature and fgroup values.
* config/arm/arm.c (arm_option_override): Use lower case for feature
bit names.
* config/arm/arm.h (TARGET_HARD_FLOAT): Likewise.
(TARGET_VFP3, TARGET_VFP5, TARGET_FMA): Likewise.
* config/arm/parsecpu.awk (END): Add new command 'isa'.
(isa_pfx): Delete.
(print_isa_bits_for): New function.
(gen_isa): New function.
(gen_comm_data): Use print_isa_bits_for.
(define feature): New keyword.
(define fgroup): New keyword.
* config/arm/t-arm (TM_H): Remove.
(GTM_H): Add arm-isa.h.
(arm-isa.h): Add rule to generate file.
* common/config/arm/arm-common.c: (arm_canon_arch_option): Use lower
case for feature bit names.

From-SVN: r253097

C++: underline parameters in mismatching function calls

gcc/cp/ChangeLog:
* call.c (get_fndecl_argument_location): New function.
(convert_like_real): Use it  when complaining about argument type
mismatches.
* cp-tree.h (struct cp_parameter_declarator): Add "loc" field.
* parser.c (make_parameter_declarator): Add "loc" param and use
it to initialize the new field.
(cp_parser_translation_unit): Add UNKNOWN_LOCATION for "loc" of
the "no_parameters" parameter.
(cp_parser_parameter_declaration_list): Set the location of the
result of grokdeclarator to be the parameter's loc, assuming no
errors.
(cp_parser_parameter_declaration): Generate a location for the
parameter and pass to make_parameter_declarator.

gcc/testsuite/ChangeLog:
* g++.dg/diagnostic/param-type-mismatch.C: Update expected results
to reflect highlighting of parameters; add test coverage for
callback parameters.

From-SVN: r253096

re PR sanitizer/77631 (no symbols in backtrace shown by ASan when debug info is split)

PR sanitizer/77631
* configure.ac: Check for lstat and readlink.
* elf.c (lstat, readlink): Provide dummy versions if real versions
are not available.
* configure, config.h.in: Rebuild.

From-SVN: r253095

graphite-isl-ast-to-gimple.c (graphite_verify): Inline into single caller.

2017-09-22  Richard Biener  <rguenther@suse.de>

* graphite-isl-ast-to-gimple.c (graphite_verify): Inline into
single caller.
(graphite_regenerate_ast_isl): Do not reset SCEV.  Move debug
print of no dependency loops ...
* graphite.c (graphite_transform_loops): ... here.
(canonicalize_loop_closed_ssa_form): Work from inner to outer
loops.
(same_close_phi_node, remove_duplicate_close_phi,
make_close_phi_nodes_unique, defined_in_loop_p): Fold into ...
(canonicalize_loop_closed_ssa): ... here and simplify.
* graphite-optimize-isl.c: Include tree-vectorizer.h.
(optimize_isl): Use dump_printf_loc to tell when we stopped
optimizing because of an ISL timeout.

* gcc.dg/graphite/scop-24.c: New testcase.

From-SVN: r253094

re PR tree-optimization/82291 (wrong code at -O3 on x86_64-linux-gnu)

2017-09-22  Richard Biener  <rguenther@suse.de>

PR tree-optimization/82291
* tree-if-conv.c (predicate_mem_writes): Make sure to
remove writes in blocks predicated with false.

* gcc.dg/torture/pr82291.c: New testcase.

From-SVN: r253093

sese.c: Include cfganal.h.

2017-09-22  Richard Biener  <rguenther@suse.de>

* sese.c: Include cfganal.h.
(if_region_set_false_region): Remove.
(create_if_region_on_edge): Likewise.
(move_sese_in_condition): Re-implement without destroying
dominators.

From-SVN: r253092

re PR fortran/52832 ([F03] ASSOCIATE construct with proc-pointer selector is rejected)

2017-09-22  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/52832
* gfortran.dg/associate_31.f90 : Remove failing test.

From-SVN: r253091

graphite-isl-ast-to-gimple.c (translate_pending_phi_nodes): Verify both BBs contain loop PHI nodes before dispatching to copy_loop_phi_args.

2017-09-21  Richard Biener  <rguenther@suse.de>

* graphite-isl-ast-to-gimple.c (translate_pending_phi_nodes):
Verify both BBs contain loop PHI nodes before dispatching to
copy_loop_phi_args.
(graphite_regenerate_ast_isl): Do not recompute dominators,
do not verify three times.  Restructure for clarity.
* graphite-scop-detection.c (same_close_phi_node,
remove_duplicate_close_phi, make_close_phi_nodes_unique,
defined_in_loop_p, canonicalize_loop_closed_ssa,
canonicalize_loop_closed_ssa_form): Simplify, remove excess
checking and SSA rewrite, move to ...
* graphite.c: ... here.  Include ssa.h and tree-ssa-loop-manip.h.
(graphite_initialize): Do not pass in ctx, do not reset the
SCEV cache, compute only dominators.
(graphite_transform_loops): Allocate ISL ctx after
graphite_initialize.  Call canonicalize_loop_closed_ssa_form.
Maintain post-dominators only around build_scops.
* sese.c (if_region_set_false_region): Make static.  Free
and recompute dominators.
(move_sese_in_condition): Assert we don't get called with
post-dominators computed.
* sese.h (if_region_set_false_region): Remove.

From-SVN: r253090

sse.md ("mov<mode>_internal"): Use <sseinsnmode> mode attribute for TARGET_AVX512VL.

/gcc
        * config/i386/sse.md ("mov<mode>_internal"): Use <sseinsnmode>
mode attribute for TARGET_AVX512VL.

* config/i386/i386.opt (mprefer-avx256): New option.
* config/i386/i386.c (ix86_target_string): Add -mprefer-avx256
to flag_opts.
(ix86_preferred_simd_mode): Return 256-bit AVX modes
for TARGET_PREFER_AVX256.
* doc/invoke.texi (x86 Options): Document -mprefer-avx256.

/testsuite

        * gcc.target/i386/avx512f-constant-set.c: New test.

* g++.dg/ext/pr57362.C: Test __attribute__((target("prefer-avx256"))).
* gcc.target/i386/avx512f-prefer.c: New test.

From-SVN: r253089

Daily bump.

From-SVN: r253088

<commit missing files>

2017-09-13  Michael Meissner  <meissner@linux.vnet.ibm.com>

* gcc.target/powerpc/float128-fma1.c: New test.
* gcc.target/powerpc/float128-fma2.c: Likewise.
* gcc.target/powerpc/float128-sqrt1.c: Likewise.
* gcc.target/powerpc/float128-sqrt2.c: Likewise.

From-SVN: r253083

i386.c (ix86_adjust_stack_and_probe_stack_clash): Fix dump output if the only stack space is for pushed registers.

* config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash):
Fix dump output if the only stack space is for pushed registers.

* lib/target-supports.exp
(check_effective_target_frame_pointer_for_non_leaf): Add
case for x86 Solaris.

From-SVN: r253082

Fix spu build after r253072

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/spu/spu.c (spu_sched_adjust_cost): Update after renaming
of insn_cost.

From-SVN: r253080

re PR go/82284 (go -version segfaults on big endian architectures)

PR go/82284
* elf.c (backtrace_initialize): Set pd.exe_filename.

From-SVN: r253078

re PR fortran/52832 ([F03] ASSOCIATE construct with proc-pointer selector is rejected)

2017-09-21  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/52832
* match.c (gfc_match_associate): Before failing the association
try again, allowing a proc pointer selector.

PR fortran/80120
PR fortran/81903
PR fortran/82121
* primary.c (gfc_match_varspec): Introduce 'tgt_expr', which
points to the associate selector, if any. Go through selector
references, after resolution for variables, to catch any full
or section array references. If a class associate name does
not have the same declared type as the selector, resolve the
selector and copy the declared type to the associate name.
Before throwing a no implicit type error, resolve all allowed
selector expressions, and copy the resulting typespec.

PR fortran/67543
* resolve.c (resolve_assoc_var): Selector must cannot be the
NULL expression and it must have a type.

PR fortran/78152
* resolve.c (resolve_symbol): Allow associate names to be
coarrays.

2017-09-21  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/78512
* gfortran.dg/associate_26.f90 : New test.

PR fortran/80120
* gfortran.dg/associate_27.f90 : New test.

PR fortran/81903
* gfortran.dg/associate_28.f90 : New test.

PR fortran/82121
* gfortran.dg/associate_29.f90 : New test.

PR fortran/67543
* gfortran.dg/associate_30.f90 : New test.

PR fortran/52832
* gfortran.dg/associate_31.f90 : New test.

From-SVN: r253077

PR c/81882 - attribute ifunc documentation uses invalid code

gcc/ChangeLog:

PR c/81882
* doc/extend.texi (attribute ifunc): Avoid relying on ill-formed
code (in C++) or code that triggers warnings.

From-SVN: r253076

[demangler PATCH]: Revert and update generic lambda demangling

https://gcc.gnu.org/ml/gcc-patches/2017-09/msg01482.html
PR demangler/82195
* cp-demangle.c (d_name): Revert addition of 'toplevel' parm.
(has_return_type): Recurse for DEMANGLE_COMPONENT_LOCAL_NAME.
(d_encoding): Revert d_name change.  Use is_fnqual_component_type
to strip modifiers that do not belong.
(d_special_name, d_class_enum_type): Revert d_name call change.
(d_expresion_1): Commonize DEMANGLE_COMPONENT_UNARY building.
(d_local_name): Revert parsing of a function type.
(d_print_comp_inner): An inner LOCAL_NAME might contain a
TEMPLATE.
* testsuite/demangle-expected: Add & adjust tests

From-SVN: r253075

* stor-layout.c (bit_from_pos): Do not distribute the conversion.

From-SVN: r253074

re PR testsuite/78421 (vect-strided-a-u8-i2-gap.c fails on armeb)

2017-09-21  Tamar Christina  <tamar.christina@arm.com>

PR testsuite/78421
* lib/target-supports.exp (check_effective_target_vect_hw_misalign):
Invert arm check.

From-SVN: r253073

Rename existing insn_cost to insn_sched_cost

haifa-sched exports an insn_cost function, but it is only used in a
few places and specialised to scheduling.  This patch renames it to
insn_sched_cost.

* haifa-sched.c: Rename insn_cost to insn_sched_cost.
* sched-rgn.c: Ditto.
* sel-sched-ir.c: Ditto.

From-SVN: r253072

openmp.c (gfc_match_oacc_wait): Don't restrict wait directive arguments to constant integers.

gcc/fortran/
* openmp.c (gfc_match_oacc_wait): Don't restrict wait directive
arguments to constant integers.

gcc/testsuite/
* gfortran.dg/goacc/wait.f90: New test.

From-SVN: r253071

toplev: read from /dev/urandom only when needed

* toplev.h (set_random_seed): Adjust return type.
* toplev.c (init_local_tick): Move eager initialization of random_seed
to get_random_seed.  Adjust comment.
(init_random_seed): Inline to get_random_seed, delete.
(get_random_seed): Initialize random_seed lazily.
(set_random_seed): Do not return previous value.
(print_switch_value): Do not call get_random_seed.

From-SVN: r253069

ipa: fix dumping with deleted multiversioning nodes

2017-09-21  Evgeny Kudryashov <kudryashov@ispras.ru>

* cgraph.c (delete_function_version): New, broken out from...
(cgraph_node::delete_function_version): ...here.  Rename to
cgraph_node::delete_function_version_by_decl.  Update all uses.
(cgraph_node::remove): Call delete_function_version.

From-SVN: r253066

re PR sanitizer/81715 (asan-stack=1 redzone allocation is too inflexible)

PR sanitizer/81715
* tree-inline.c (expand_call_inline): Emit clobber stmts for
VAR_DECLs to which addressable non-volatile parameters are mapped
and for id->retvar after the return value assignment.  Clear
id->retval and id->retbnd after inlining.

* g++.dg/tree-ssa/pr8781.C (noop): Change argument type from
const predicate to const predicate & to avoid UB.
* g++.dg/opt/pr81715.C: New test.

From-SVN: r253065

re PR tree-optimization/82276 (-O2: ICE: SSA corruption during RTL pass: expand; at tree-ssa-coalesce.c:1010)

2017-09-21  Richard Biener  <rguenther@suse.de>

PR tree-optimization/82276
PR tree-optimization/82244
* tree-vrp.c (build_assert_expr_for): Set
SSA_NAME_OCCURS_IN_ABNORMAL_PHI if the variable we assert on
has it set.
(remove_range_assertions): Revert earlier change.

* gcc.dg/torture/pr82276.c: New testcase.

From-SVN: r253062

PR71951: Fix unwinding with -fomit-frame-pointer

As described in PR71951, if libgcc is built with -fomit-frame-pointer,
unwinding crashes, for example while doing a backtrace.  The underlying
reason is the Dwarf unwinder does not setup the frame pointer register
in the initialization code.  When later unwinding a function that uses
the frame pointer, it tries to read FP using _Unwind_GetGR, and this
crashes if has never restored FP.  To unwind correctly the first frame
must save and restore FP (it is unwound in a special way so that it
uses SP instead of FP).  This is done by adding -fno-omit-frame-pointer.

    gcc/
PR target/71951
* config/aarch64/aarch64.h (LIBGCC2_UNWIND_ATTRIBUTE): Define.

From-SVN: r253061

graphite-isl-ast-to-gimple.c (graphite_regenerate_ast_isl): Restore valid IL after code generation errors.

2017-09-21  Richard Biener  <rguenther@suse.de>

* graphite-isl-ast-to-gimple.c (graphite_regenerate_ast_isl):
Restore valid IL after code generation errors.
* graphite.c (graphite_transform_loops): Diagnose code
generation issues as MSG_MISSED_OPTIMIZATION and continue
with processing SCOPs.

From-SVN: r253060

Make more use of simplify_gen_binary

This patch replaces various places that previously used:

  if (GET_CODE (y) == CONST_INT)
    ... plus_constant (..., x, [-]INTVAL (y)) ...
  else
    ... gen_rtx_PLUS/MINUS (..., x, y) ...

with single calls to simplify_gen_binary.  This allows
them to handle polynomial integers as well as constants.

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* calls.c (compute_argument_addresses): Use simplify_gen_binary
rather than choosing between plus_constant and gen_rtx_<CODE>.
* expr.c (emit_push_insn): Likewise.
(expand_expr_real_2): Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253059

Add copy_rtx call to RTL loop unroller

This is needed if the step is an unshared constant, like many
(const ...)s are.  Without this patch, libgfortran would fail
to build for SVE.

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* loop-unroll.c (split_iv): Call copy_rtx on the step.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253058

Fix unguarded uses of tree_to_uhwi

This patch uses tree_fits_uhwi_p to protect a previously unguarded
use of tree_to_uhwi.  Previously we would ICE for variable-sized types.

2017-09-20  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* tree.c (find_atomic_core_type): Check tree_fits_uhwi_p before
calling tree_to_uhwi.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253057

Tighten tree-ssa-ccp.c:get_value_for_expr condition

bit_value_unop and bit_value_binop require constant values
to be INTEGER_CSTs:

  gcc_assert ((rval.lattice_val == CONSTANT
               && TREE_CODE (rval.value) == INTEGER_CST)
              || wi::sext (rval.mask, TYPE_PRECISION (TREE_TYPE (rhs))) == -1);

However, when deciding whether to record a constant value,
the for_bits_p handling in get_value_for_expr used a negative
test for ADDR_EXPR:

  else if (is_gimple_min_invariant (expr)
           && (!for_bits_p || TREE_CODE (expr) != ADDR_EXPR))

This patch uses a positive test for INTEGER_CST instead.

Existing tests showed the need for this once polynomial constants
are added.

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* tree-ssa-ccp.c (get_value_for_expr): Use a positive test for
INTEGER_CST rather than a negative test for ADDR_EXPR.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253056

Tweak

From-SVN: r253055

Add missing int_cst_rangeN checks to tree-vrp.c

The BIT_AND_EXPR handling in extract_range_from_binary_expr_1
was using value_range_constant_singleton without first checking
whether the range was a constant.  The earlier handling was correctly
guarded:

  /* If either input range contains only non-negative values
     we can truncate the result range maximum to the respective
     maximum of the input range.  */
  if (int_cst_range0 && tree_int_cst_sgn (vr0.min) >= 0)
    wmax = wi::min (wmax, vr0.max, TYPE_SIGN (expr_type));
  if (int_cst_range1 && tree_int_cst_sgn (vr1.min) >= 0)
    wmax = wi::min (wmax, vr1.max, TYPE_SIGN (expr_type));

so this patch uses the same guards again.

Existing tests showed the need for this once polynomial constants
are added.

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* tree-vrp.c (extract_range_from_binary_expr_1): Check
int_cst_rangeN before calling value_range_constant_singleton (&vrN).

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253054

re PR tree-optimization/71351 (ICE: Segmentation fault (graphite))

2017-09-21  Richard Biener  <rguenther@suse.de>

PR tree-optimization/71351
* graphite-isl-ast-to-gimple.c (translate_isl_ast_to_gimple::
graphite_create_new_loop_guard): Remove, fold remaining parts
into caller ...
(translate_isl_ast_node_for): ... here and simplify.

* gfortran.dg/graphite/pr71351.f90: New testcase.
* gfortran.dg/graphite/interchange-3.f90: Adjust.

From-SVN: r253052

Fix tests for std::clamp

* testsuite/25_algorithms/clamp/1.cc: Fix order of arguments and
expected results when using predicate defining reverse order.
* testsuite/25_algorithms/clamp/constexpr.cc: Likewise.

From-SVN: r253051

re PR target/82260 ([x86] Unnecessary use of 8-bit registers with -Os.  slightly slower and larger code)

PR target/82260
* config/i386/i386.md (*movqi_internal): Replace (=q,q) alternative
with (=Q,Q), (=R,R) and (=r,r) alternatives, only enable the
latter two for 64-bit, renumber alternatives, for -Os imov (=q,n)
alternative always use QI mode, for -Os imov (=R,R) alternative
always use SI mode, for imov (=Q,Q) or (=r,r) alternatives
ignore -Os.

* gcc.target/i386/pr82260-1.c: New test.
* gcc.target/i386/pr82260-2.c: New test.

From-SVN: r253050

s390.c (MIN_UNROLL_PROBES): Define.

* config/s390/s390.c (MIN_UNROLL_PROBES): Define.
(allocate_stack_space): New function, partially extracted from
s390_emit_prologue.
(s390_emit_prologue): Track offset to most recent stack probe.
Code to allocate space moved into allocate_stack_space.
Dump actions when no stack is allocated.
(s390_prologue_plus_offset): New function.
(s390_emit_stack_probe): Likewise.

* gcc.dg/stack-check-5.c:  Add argument for s390.
* lib/target-supports.exp:
(check_effective_target_supports_stack_clash_protection): Enable for
s390/s390x targets.

Co-Authored-By: Jeff Law <law@redhat.com>
From-SVN: r253049

[C++ PATCH] class member ordering

https://gcc.gnu.org/ml/gcc-patches/2017-09/msg01426.html
* name-lookup.c (member_name_cmp): Use DECL_UID for final
ordering.

From-SVN: r253048

enable handling of -gno- command-line options as negated prefixes

This patch that adds -g to the set of negatable prefixes along with -f,
-m and -W.  Besides the mapping from -gno- to negated -g in option_map
and adding g to the [fmW] matches for negatable options, I had to
introduce gno- as an remapping prefix, for the option searching
machinery to backtrack to and recognize as a remapping prefix, instead
of backtracking to -g and stopping at it as if no-* was its Joined
argument.  Adding such remapping prefixes to preempt further
backtracking can be accomplished by introducing the prefix as an
Undocumented option with a Joined argument and without Driver, Target,
Common, or any language-specific option.  Whenever we match such a fake
options prefix, we abandon further backtracking (it matches, after all),
but find_opt returns the same code it would if it hadn't found any
match, so that we resort to option mapping.

I've arranged for such remapping prefixes to not be considered when
looking for and suggesting a correct spelling for misspelled options.
While testing that, I found a few -W-started options that were not
marked as RejectNegative but should (-Wno-a, is not something we'd like
to suggest ;-)  I've also marked as such -g-started options that
it makes no sense to negate, and removed the explicit -gno- ones,
allowing their opposites to be negated.

for  gcc/ChangeLog

* common.opt (Wa, Wl, Wp, g, gz=): Add
RejectNegative.
(gno-column-info): Remove.
(gcolumn-info): Drop RejectNegative.
(gno-): New prefix.
(gno-record-gcc-switches): Remove.
(grecord-gcc-switches): Drop RejectNegative.
(gno-split-dwarf): Remove.
(gsplit-dwarf): Drop RejectNegative.
(gno-strict-dwarf): Remove.
(gstrict-dwarf): Drop RejectNegative.
* config/darwin.opt (gfull, gused): Add RejectNegative.
* dwarf2out.c (gen_producer_string): Drop
gno-record-gcc-switches handler.
* optc-gen.awk: Add g to prefixes with negative forms.
* opts-common.c (remapping_prefix_p): New.
(find_opt): Check it.
(generate_canonical_option): Test g prefix.
(option_map): Add -gno- mapping.
(add_misspelling_candidates): Check remapping_prefix_p.

for  gcc/ada/ChangeLog

* gcc-interface/lang.opt (gant, gnatO, gnat): Add
        RejectNegative.

for  gcc/c-family/ChangeLog

* c.opt (gen-decls): Add RejectNegative.

From-SVN: r253047

Daily bump.

From-SVN: r253046

libgo: fix build when using -enable-static=no

    With -enable-static=no we don't build non-pic objects, but libgotool.a
    is built from non-pic objects.  Build the packages that go into
    libgotool.a in static mode in all cases.

    Also ensure that internal test packages are built, since nothing
    explicitly depended on them.

    Reviewed-on: https://go-review.googlesource.com/65050

From-SVN: r253042

Fix C++ testsuite fallout from r252976.

gcc/testsuite/ChangeLog:

PR c/81854
* g++.dg/ext/attr-ifunc-2.C: Correct type errors.
* g++.dg/ext/attr-ifunc-4.C: Ditto.
* lib/target-supports.exp: Adjust for C++.

From-SVN: r253041

Fix testsuite fallout from r252976.

gcc/testsuite/ChangeLog:

PR c/81854
* gcc.dg/attr-ifunc-1.c: Correct type errors.
* gcc.dg/attr-ifunc-2.c: Ditto.
* gcc.dg/attr-ifunc-3.c: Ditto.
* gcc.dg/attr-ifunc-4.c: Ditto.
* gcc.dg/attr-ifunc-5.c: Ditto.
* gcc.dg/pr81854.c: Require ifunc support.
* gcc/testsuite/lib/target-supports.exp: Correct type error.

From-SVN: r253037