This patch fixes an issue whereby the compiler would raise spurious runtime
errors when an array of null-excluding components was initialized with an
expression which required the secondary stack (such as with an concatination
operation) due to certain generated checks which were incorrected performed
on internal object declarations.

2018-05-28  Justin Squirek  <squirek@adacore.com>

gcc/ada/

	* exp_ch3.adb
	(Build_Initialization_Call): Add logic to pass the appropriate actual to match
	 new formal.
	(Init_Formals): Add new formal *_skip_null_excluding_check
	* exp_util.adb, exp_util.ads
	(Enclosing_Init_Proc): Added to fetch the enclosing Init_Proc from the current
	 scope.
	(Inside_Init_Proc): Refactored to use Enclosing_Init_Proc
	(Needs_Conditional_Null_Excluding_Check): Added to factorize the predicate
	 used to determine how to generate an Init_Proc for a given type.
	(Needs_Constant_Address): Minor reformatting
	* sem_res.adb
	(Resolve_Null): Add logic to generate a conditional check in certain cases

gcc/testsuite/

	* gnat.dg/array31.adb: New testcase.

From-SVN: r260822

2018-05-28  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* exp_aggr.adb, gnatlink.adb, sem_ch6.adb, sem_res.adb, sem_util.adb:
	Minor reformatting.

From-SVN: r260821

This patch modifies the analysis of aspect/pragma Volatile to correct accept
the annotation when it applies to single protected and single task types, and
SPARK_Mode On is in effect.

------------
-- Source --
------------

--  pack.ads

package Pack with SPARK_Mode is
   protected PO_Aspect with Volatile is end;                         --  OK

   protected PO_Pragma is end;
   pragma Volatile (PO_Pragma);                                      --  OK

   task TO_Aspect with Volatile;                                     --  OK

   task TO_Pragma;
   pragma Volatile (TO_Pragma);                                      --  OK
end Pack;

----------------------------
-- Compilation and output --
----------------------------

$ gcc -c pack.ads
$ gcc -c pack.ads -gnatd.F
cannot generate code for file pack.ads (package spec)

2018-05-28  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* sem_prag.adb (Process_Atomic_Independent_Shared_Volatile): Include
	the declarations of single concurrent types because they fall in the
	category of full type and object declarations.

From-SVN: r260820

This changes the output of -gnatR for extensions of tagged record types to
avoid displaying the internal _Parent component, which overlaps with other
components and is thus more confusing than helpful.

For the following hierarchy:

  type R1 is tagged record
    I : Integer;
  end record;

  type R2 is new R1 with record
    C : Character;
  end record;

the output -gnatR must now be:

for R1'Object_Size use 128;
for R1'Value_Size use 96;
for R1'Alignment use 8;
for R1 use record
   _Tag at 0 range  0 .. 63;
   I    at 8 range  0 .. 31;
end record;

for R2'Object_Size use 192;
for R2'Value_Size use 136;
for R2'Alignment use 8;
for R2 use record
   _Tag at  0 range  0 .. 63;
   I    at  8 range  0 .. 31;
   C    at 16 range  0 ..  7;
end record;

2018-05-28  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* repinfo.adb (Compute_Max_Length): Skip _Parent component.
	(List_Record_Layout): Likewise.

From-SVN: r260819

This patch adds a warning to a function call that appears within a
postcondition for said function. This may mean an omission of an attribute
reference 'Result, and may lead to an infinite loop on a call to that function.

Compiling post_error.ads must yield:

post_error.ads:3:11:
        warning: postcondition does not mention function result
post_error.ads:3:19:
       warning: call to "Foo" within its postcondition will lead
         to infinite recursion
----
package Post_Error is
   function Foo (A : out Integer) return Integer
     with Post => Foo (A)  /= 0;
   pragma Import (C, Foo);
end Post_Error;

2018-05-28  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_util.adb (Is_Function_Result): Add a warning if a postcondition
	includes a call to function to which it applies. This may mean an
	omission of an attribute reference 'Result, in particular if the
	function is pqrameterless.

From-SVN: r260818

This patch fixes an issue whereby the compiler misidentified a package name
containing the name of a standard runtime package as said package - leading to
and improper error message prompting the user to "With" a package already in
scope.

2018-05-28  Justin Squirek  <squirek@adacore.com>

gcc/ada/

	* sem_ch8.adb (Find_Expanded_Name): Add extra guard to make sure the
	misresolved package name is not a case of mistaken identity.

gcc/testsuite/

	* gnat.dg/warn15-core-main.adb, gnat.dg/warn15-core.ads,
	gnat.dg/warn15-interfaces.ads, gnat.dg/warn15.ads: New testcase.

From-SVN: r260817

Some static bounds of types are not recognized and evaluated as such in the
semantic analysis phase of the frontend, which leads to incomplete information
in GNATprove. Fix that in the GNATprove mode only, as this is not needed when
full expansion is used.

There is no impact on compilation.

2018-05-28  Yannick Moy  <moy@adacore.com>

gcc/ada/

	* sem_res.adb (Resolve_Range): Re-resolve the low bound of a range in
	GNATprove mode, as the order of resolution (low then high) means that
	all the information is not available when resolving the low bound the
	first time.

From-SVN: r260816

This steamlines a bit the implementation.  No functional changes.

2018-05-28  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* repinfo.adb (List_Array_Info): Start with an explicit blank line and
	end with the linker section, if any.
	(List_Entities): Do not output the linker section for record types,
	array types and variables.
	(Print_Expr): Factor out common processing for unary operators and
	special values.  Adjust and reorder the various cases.
	(List_Object_Info): End with the linker section, if any.
	(List_Record_Info): Likewise.
	(List_Type_Info): Do not start with a blank line.

From-SVN: r260815

From-SVN: r260814

	* config/pa/pa-linux.h (NEED_INDICATE_EXEC_STACK): Define to 0.

From-SVN: r260809

2018-05-27  Steven G. Kargl  <kargl@gcc.gnu.org>

 * decl.c (match_data_constant):  Fortran 2018 allows pointer
 initialization in a data statement.

2018-05-27  Steven G. Kargl  <kargl@gcc.gnu.org>

 * gfortran.dg/data_stmt_pointer.f90: new test.

From-SVN: r260808

	    * config/pdp11/pdp11.md (truncsihi2): Remove.

From-SVN: r260807

2018-05-27  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/stl_tree.h (_Rb_tree_impl(_Node_allocator&&)): New.
	(_Rb_tree(const allocator_type&)): Use latter.
	* include/bits/stl_map.h (map(const allocator_type&)): Likewise.
	(map(initializer_list<value_type>, const allocator_type&)): Likewise.
	(map(_InputIterator, _InputIterator, const allocator_type&)): Likewise.
	* include/bits/stl_multimap.h
	(multimap(const allocator_type&)): Likewise.
	(multimap(initializer_list<value_type>, const allocator_type&)):
	Likewise.
	(multimap(_InputIterator, _InputIterator, const allocator_type&)):
	Likewise.
	* include/bits/stl_set.h (set(const allocator_type&)): Likewise.
	(set(initializer_list<value_type>, const allocator_type&)): Likewise.
	(set(_InputIterator, _InputIterator, const allocator_type&)): Likewise.
	* include/bits/stl_multiset.h
	(multiset(const allocator_type&)): Likewise.
	(multiset(initializer_list<value_type>, const allocator_type&)):
	Likewise.
	(multiset(_InputIterator, _InputIterator, const allocator_type&)):
	Likewise.

From-SVN: r260806

gcc/
	* config/nds32/nds32-intrinsic.md (unaligned_storedi): Modify patterns
	implementation.
	(unaligned_store_dw): Ditto.
	* config/nds32/nds32-memory-manipulation.c
	(nds32_expand_movmemsi_loop_known_size): Refactoring implementation.
	(nds32_gen_dup_4_byte_to_word_value): Rename to ...
	(nds32_gen_dup_4_byte_to_word_value_aux): ... this.
	(emit_setmem_word_loop): Rename to ...
	(emit_setmem_doubleword_loop): ... this.
	(nds32_gen_dup_4_byte_to_word_value): New function.
	(nds32_gen_dup_8_byte_to_double_word_value): New function.
	(nds32_expand_setmem_loop): Refine implementation.
	(nds32_expand_setmem_loop_v3m): Ditto.
	* config/nds32/nds32-multiple.md (unaligned_store_update_base_dw): New
	pattern.

Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>

From-SVN: r260805

gcc/
	* config/nds32/nds32.md (bswapsi2, bswaphi2): New patterns.

From-SVN: r260804

gcc/
	* config/nds32/nds32.c (nds32_attribute_table): Add "no_prologue".
	(nds32_init_machine_status): Initialize machine->attr_naked_p and
	machine->attr_no_prologue_p.
	(nds32_compute_stack_frame): Check "naked" and "no_prologue" attributes.
	(nds32_naked_function_p): Handle "naked" and "no_prologue" attributes.
	(nds32_expand_epilogue): Consider attr_naked_p.
	(nds32_expand_epilogue_v3pop): Likewise.
	(nds32_can_use_return_insn): Likewise.
	* config/nds32/nds32.h (machine_function): Add attr_naked_p and
	attr_no_prologue_p fields.
	* config/nds32/nds32.opt (mret-in-naked-func): New option.

From-SVN: r260803

From-SVN: r260801

re PR target/85918 (Conversions to/from [unsigned] long long are not vectorized for AVX512DQ target)

	PR target/85918
	* config/i386/i386.md (fixunssuffix, floatunssuffix): New code
	attributes.
	* config/i386/sse.md
	(<floatsuffix>float<sseintvecmodelower><mode>2<mask_name><round_name>):
	Rename to ...
	(float<floatunssuffix><sseintvecmodelower><mode>2<mask_name><round_name>):
	... this.
	(<floatsuffix>float<sselongvecmodelower><mode>2<mask_name><round_name>):
	Rename to ...
	(float<floatunssuffix><sselongvecmodelower><mode>2<mask_name><round_name>):
	... this.
	(*<floatsuffix>floatv2div2sf2): Rename to ...
	(*float<floatunssuffix>v2div2sf2): ... this.
	(<floatsuffix>floatv2div2sf2_mask): Rename to ...
	(float<floatunssuffix>v2div2sf2_mask): ... this.
	(*<floatsuffix>floatv2div2sf2_mask_1): Rename to ...
	(*float<floatunssuffix>v2div2sf2_mask_1): ... this.
	(<fixsuffix>fix_truncv8dfv8si2<mask_name><round_saeonly_name>): Rename
	to ...
	(fix<fixunssuffix>_truncv8dfv8si2<mask_name><round_saeonly_name>):
	... this.
	(<fixsuffix>fix_trunc<mode><sseintvecmodelower>2<mask_name><round_saeonly_name>):
	Rename to ...
	(fix<fixunssuffix>_trunc<mode><sseintvecmodelower>2<mask_name><round_saeonly_name>):
	... this.
	(<fixsuffix>fix_trunc<mode><sselongvecmodelower>2<mask_name><round_saeonly_name>):
	Rename to ...
	(fix<fixunssuffix>_trunc<mode><sselongvecmodelower>2<mask_name><round_saeonly_name>):
	... this.
	(<fixsuffix>fix_truncv2sfv2di2<mask_name>): Rename to ...
	(fix<fixunssuffix>_truncv2sfv2di2<mask_name>): ... this.
	(vec_pack_ufix_trunc_<mode>): Use gen_fixuns_truncv8dfv8si2 instead of
	gen_ufix_truncv8dfv8si2.
	* config/i386/i386-builtin.def (__builtin_ia32_cvttpd2uqq256_mask,
	__builtin_ia32_cvttpd2uqq128_mask, __builtin_ia32_cvttps2uqq256_mask,
	__builtin_ia32_cvttps2uqq128_mask, __builtin_ia32_cvtuqq2ps256_mask,
	__builtin_ia32_cvtuqq2ps128_mask, __builtin_ia32_cvtuqq2pd256_mask,
	__builtin_ia32_cvtuqq2pd128_mask, __builtin_ia32_cvttpd2udq512_mask,
	__builtin_ia32_cvtuqq2ps512_mask, __builtin_ia32_cvtuqq2pd512_mask,
	__builtin_ia32_cvttps2uqq512_mask, __builtin_ia32_cvttpd2uqq512_mask):
	Use fixuns instead ufix or floatuns instead ufloat in CODE_FOR_ names.

	* gcc.target/i386/avx512dq-pr85918.c: New test.

From-SVN: r260797

From-SVN: r260796

2018-05-26  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/89506
	* io/write.c (write_integer): Initialise the fnode format to
	FMT_NONE, used for list directed write.
	(BUF_STACK_SZ): Bump default buffer size up to avoid allocs on
	small stuff.

From-SVN: r260795

From-SVN: r260794

2018-05-26  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/85840
	* io/write.c (write_float_0): Use separate local variable for
	the float string length.

From-SVN: r260793

Since ifunc_resolver isn't set when an error is detected, we should
lookup ifunc attribute in this case.

	PR target/85900
	PR target/85345
	* varasm.c (assemble_alias): Lookup ifunc attribute on error.

From-SVN: r260792

	PR bootstrap/85921
	* c-warn.c (diagnose_mismatched_attributes): Remove unnecessary
	noinline variable to workaround broken kernel headers.

From-SVN: r260790

From-SVN: r260789

	gcc/
	* config/riscv/riscv-protos.h (riscv_epilogue_uses): New.
	* config/riscv/riscv.c (struct machine_function): Add
	interrupt_handler_p and attribute_checked_p fields.
	(riscv_attribute_table): Add interrupt.
	(riscv_interrupt_type_p): New.
	(riscv_save_reg_p): Save extra regs for interrupt handler.
	(riscv_use_save_libcall): Return false  for interrupt handler.
	(riscv_first_stack_step): Add forward declaration.
	(riscv_compute_frame_info): New local interrupt_save_t1.  Set it
	for interrupt handler with large frame.  Use it for saved reg list.
	(riscv_expand_prologue): Move flag_stack_usage_info support to
	eliminate duplication.
	(riscv_expand_epilogue): Generate mret for interrupt handler.
	(riscv_epilogue_uses): New.
	(riscv_can_use_return_insn): Return false for interrupt handler.
	(riscv_function_ok_for_sibcall): Likewise.
	(riscv_set_current_function): Add interrupt handler support.
	* config/riscv/riscv.h (EPILOGUE_USES): Call riscv_epilogue_uses.
	* config/riscv/riscv.md (UNSPECV_MRET): New.
	(GP_REGNUM): New.
	(riscv_frflags, riscv_fsflags): Use tab after opcode.
	(riscv_mret): New.
	* doc/extend.texi (RISC-V Function Attributes) <interrupt>: New.

	gcc/testsuite/
	* gcc.target/riscv/interrupt-1.c: New.
	* gcc.target/riscv/interrupt-2.c: New.
	* gcc.target/riscv/interrupt-3.c: New.
	* gcc.target/riscv/interrupt-4.c: New.
	* gcc.target/riscv/interrupt-5.c: New.

From-SVN: r260785

2018-05-25  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/85786
	* gfortran.dg/pr85786.f90: New test.

From-SVN: r260783

	* search.c (lookup_base): Use currently_open_class.
	(lookup_member): Use it regardless of -fconcepts.
	* parser.c (cp_parser_postfix_dot_deref_expression): Check it.

From-SVN: r260782

	* gcc.c-torture/compile/20151204.c: Skip if pdp11.
	* gcc.c-torture/compile/pr55921.c: Ditto.
	* gcc.c-torture/compile/pr60655-1.c: Ditto.
	* gcc.c-torture/compile/vector-align-1.c: Add max alignment if pdp11.

From-SVN: r260781

	* tree.c (lvalue_kind): Fix handling of ARRAY_REF of pointer.

From-SVN: r260780

re PR tree-optimization/85712 (ICE in all_phi_incrs_profitable_1 at gcc/gimple-ssa-strength-reduction.c:3479)

2018-05-25  Bill Schmidt  <wschmidt@linux.ibm.com>

	PR tree-optimization/85712
	* gimple-ssa-strength-reduction.c (replace_one_candidate): Skip if
	this candidate has already been replaced in-situ by a copy.

From-SVN: r260772

From-SVN: r260763

	* symtab.c (nonzero_address): Check DECL_COMDAT.

From-SVN: r260762

2018-05-25  François Dumont  <fdumont@gcc.gnu.org>

	PR libstdc++/85768
	* src/c++11/debug.cc: Remove backtrace usage.

From-SVN: r260761

	PR target/83628
	* config/alpha/alpha.md (ashlsi3): New insn pattern.
	(*ashlsi_se): Rename from *ashldi_se.  Define as sign
	extension of SImode operation.  Use const123_operand predicate.
	(*saddsi_1): Remove.
	(*saddl_se_1): Ditto.
	(*ssubsi_1): Ditto.
	(*ssubl_se_1): Ditto.
	* config/alpha/predicates.md (const123_operand): New predicate.
	* config/alpha/constraints.md (P): Use IN_RANGE.

From-SVN: r260760

2018-05-25  Richard Biener  <rguenther@suse.de>

	* tree-ssa-alias.h (refs_may_alias_p): Add tbaa_p bool parameter,
	defaulted to true.
	(ref_maybe_used_by_stmt_p): Likewise.
	(stmt_may_clobber_ref_p): Likewise.
	(stmt_may_clobber_ref_p_1): Likewise.
	* tree-ssa-alias.c (refs_may_alias_p): Add tbaa_p bool parameter
	and pass it along.
	(ref_maybe_used_by_stmt_p): Likewise.
	(stmt_may_clobber_ref_p): Likewise.
	(stmt_may_clobber_ref_p_1): Likewise.
	* tree-vect-data-refs.c (vect_slp_analyze_node_dependences): Use
	the alias oracle to disambiguate DRs with stmts DR analysis
	couldn't handle.
	(vect_analyze_data_refs): Do not give up on not analyzable
	DRs for BB vectorization.  Remove code truncating the dataref
	vector.

From-SVN: r260757

	PR target/85832
	* config/i386/sse.md (<avx512>_eq<mode>3<mask_scalar_merge_name>_1):
	Add (=Yk,v,C) variant using vptestm insn.  Use TARGET_AVX512BW
	in test instead of TARGET_AVX512F for VI12_AVX512VL iterator.

	* gcc.target/i386/avx512f-pr85832.c: New test.
	* gcc.target/i386/avx512vl-pr85832.c: New test.
	* gcc.target/i386/avx512bw-pr85832.c: New test.
	* gcc.target/i386/avx512vlbw-pr85832.c: New test.

From-SVN: r260756

tree-vect-data-refs.c (vect_find_stmt_data_reference): New function, combining stmt data ref gathering and fatal analysis parts.

2018-05-25  Richard Biener  <rguenther@suse.de>

	* tree-vect-data-refs.c (vect_find_stmt_data_reference): New
	function, combining stmt data ref gathering and fatal analysis
	parts.
	(vect_analyze_data_refs): Remove now redudnant code and simplify.
	* tree-vect-loop.c (vect_get_datarefs_in_loop): Factor out from
	vect_analyze_loop_2 and use vect_find_stmt_data_reference.
	* tree-vect-slp.c (vect_slp_bb): Use vect_find_stmt_data_reference.
	* tree-vectorizer.h (vect_find_stmt_data_reference): Declare.

From-SVN: r260754

	PR tree-optimization/85720

	* tree-loop-distribution.c (break_alias_scc_partitions): Don't merge
	SCC if all partitions are builtins.
	(version_loop_by_alias_check): New parameter.  Generate cancelable
	runtime alias check if all partitions are builtins.
	(distribute_loop): Update call to above function.

	gcc/testsuite
	* gcc.dg/tree-ssa/pr85720.c: New test.
	* gcc.target/i386/avx256-unaligned-store-2.c: Disable loop pattern
	distribution.

From-SVN: r260753

2018-05-25  Martin Liska  <mliska@suse.cz>

	PR testsuite/85911
	* gcc.dg/tree-prof/update-loopch.c: Do not scan
	for 'Removing basic block'.

From-SVN: r260748