re PR c++/77304 (ICE on C++ code with invalid template parameter: in gimplify_expr, at gimplify.c:11260)

	PR c++/77304
	* g++.dg/cpp2a/nontype-class13.C: New test.

From-SVN: r268849

This patch fixes an ICE in the Thumb-1 LDM peepholer.  Thumb-1 LDMs
always update the base register except if the base is loaded.
The current implementation rejects LDMs where the base is not dead,
however this doesn't exclude the case where the base is loaded as
well as dead.  Fix this by explicitly checking whether the base is
loaded.  Also enable LDMs which load the first register.

    gcc/
	PR target/89190
	* config/arm/arm.c (ldm_stm_operation_p) Set
	addr_reg_in_reglist correctly for first register.
	(load_multiple_sequence): Remove dead base check.
	(gen_ldm_seq): Correctly set write_back for Thumb-1.

    testsuite/
	PR target/89190
	* gcc.target/arm/pr89190.c: New test.

From-SVN: r268848

PR c++/89036 reports an ICE due to this assertion failing

1136	  /* A class should never have more than one destructor.  */
1137	  gcc_assert (!current_fns || via_using || !DECL_DESTRUCTOR_P (method));

on this template with a pair of dtors, with
mutually exclusive "requires" clauses:

template<typename T>
struct Y {
    ~Y() requires(true) = default;
    ~Y() requires(false) {}
};

Nathan introduced this assertion as part of:

  ca9219bf18c68a001d62ecb981bc9176b0feaf12 (aka r251340):
    2017-08-24  Nathan Sidwell  <nathan@acm.org>
       Conversion operators kept on single overload set

which, amongst other changes to add_method had this:
     /* A class should never have more than one destructor.  */
  -  if (current_fns && DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (method))
  -    return false;
  +  gcc_assert (!current_fns || !DECL_DESTRUCTOR_P (method));

The following patch drops the assertion (I already had to generalize
the assertion in r268041 to fix PR c++/88699).

gcc/cp/ChangeLog:
	PR c++/89036
	* class.c (add_method): Drop destructor assertion.

gcc/testsuite/ChangeLog:
	PR c++/89036
	* g++.dg/concepts/pr89036.C: New test.

From-SVN: r268847

On AArch64 aarch64_classify_address has a case for when it's non-strict
that will allow it to accept any byte offset from a reg when validating
an address in a given addressing mode.

This because reload would later make the address valid. SVE however requires
the address always be valid, but currently allows any address when a MEM +
offset is used.  This causes an ICE as nothing later forces the address to be
legitimate.

The patch forces aarch64_emit_sve_pred_move via expand_insn to ensure that
the addressing mode is valid for any loads/stores it creates, which follows
the SVE way of handling address classifications.

gcc/ChangeLog:

	PR target/88847
	* config/aarch64/aarch64-sve.md (*pred_mov<mode>, pred_mov<mode>):
	Expose as @aarch64_pred_mov.
	* config/aarch64/aarch64.c (aarch64_classify_address):
	Use expand_insn which legitimizes operands.

gcc/testsuite/ChangeLog:

	PR target/88847
	* gcc.target/aarch64/sve/pr88847.c: New test.

From-SVN: r268845

2019-02-13  Martin Liska  <mliska@suse.cz>

	* builtins.h (expand_builtin_with_bounds): Remove declaration.
	* calls.c (struct arg_data): Remove special_slot, pointer_arg
	and pointer_offset fields.
	(initialize_argument_information): Remove usage of dead
	fields.
	* cgraph.h (struct cgraph_thunk_info): Remove
	add_pointer_bounds_args.
	* cgraphunit.c (cgraph_node::expand_thunk): Remove usage of dead
	fields.
	(cgraph_node::assemble_thunks_and_aliases): Remove usage of dead
	fields.
	* config/i386/i386.c (ix86_function_arg_advance): Remove
	unrelated comment.
	(struct builtin_isa): Remove leaf_p and nothrow_p fields.
	(def_builtin):  Remove usage of dead
	fields.
	(ix86_add_new_builtins): Likewise.
	* ipa-fnsummary.c (compute_fn_summary): Likewise.
	* ipa-icf.c (sem_function::equals_wpa): Likewise.
	(sem_function::init): Likewise.
	(sem_variable::merge): Likewise.
	* ipa-visibility.c (function_and_variable_visibility): Likewise.
	* ipa.c (symbol_table::remove_unreachable_nodes): Likewise.
	* lto-cgraph.c (lto_output_node): Likewise.
	(lto_output_varpool_node): Likewise.
	(input_node): Likewise.
	(input_varpool_node): Likewise.
	* lto-streamer-out.c (lto_output): Likewise.
	* tree-inline.c (expand_call_inline): Remove usage of
	assign_stmts.
	* tree-inline.h (struct copy_body_data): Likewise.
	* varpool.c (varpool_node::dump): Likewise.

From-SVN: r268844

2019-02-13  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/89303
	* tree-ssa-structalias.c (set_uids_in_ptset): Or in vi->is_heap_var
	into pt->vars_contains_escaped_heap instead of setting
	pt->vars_contains_escaped_heap to it.

2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/89303
	* g++.dg/torture/pr89303.C: New test.

From-SVN: r268843

2019-02-13  Martin Liska  <mliska@suse.cz>

	PR fortran/88649
	* resolve.c (resolve_operator): Initialize 't' right
	after function entry.  Skip switch (e->value.op.op)
	for -fdec operands that become function calls.

From-SVN: r268842

re PR middle-end/89281 (gcc/optabs.c:3901:30: runtime error: shift exponent 32 is too large for 32-bit type 'int')

	PR middle-end/89281
	* optabs.c (prepare_cmp_insn): Use UINTVAL (size) instead of
	INTVAL (size), compare it to GET_MODE_MASK instead of
	1 << GET_MODE_BITSIZE.

From-SVN: r268841

re PR c++/88986 (ICE: tree check: expected tree that contains 'decl minimal' structure, have 'error_mark' in member_vec_binary_search, at cp/name-lookup.c:1136)

/cp
2019-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/88986
	* decl.c (make_typename_type): Allow for TYPE_PACK_EXPANSION as
	context (the first argument).
	* pt.c (tsubst, case TYPENAME_TYPE): Handle TYPE_PACK_EXPANSION
	as context.

/testsuite
2019-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/88986
	* g++.dg/cpp1z/using4.C: New.
	* g++.dg/cpp1z/using5.C: Likewise.
	* g++.dg/cpp1z/using6.C: Likewise.

From-SVN: r268839

	PR target/89290
	* config/i386/predicates.md (x86_64_immediate_operand): Allow
	TLS UNSPECs offsetted by signed 32-bit CONST_INT even with
	-mcmodel=large.

	* gcc.target/i386/pr89290.c: New test.

From-SVN: r268837

In the gcc.backtrace module, either one of LibBacktrace or
UnwindBacktrace will always be defined.  Giving UnwindBacktrace a higher
precedence over the libc backtrace as the default handler because the
latter depends on a rt.backtrace module that is not compiled in.

libphobos/ChangeLog:

	* libdruntime/core/runtime.d (defaultTraceHandler): Give
	UnwindBacktrace handler precedence over backtrace.

From-SVN: r268836

2019-02-13  Martin Liska  <mliska@suse.cz>

	PR lto/88858
	* cfgrtl.c (remove_barriers_from_footer): New function.
	(try_redirect_by_replacing_jump): Use it.
	(cfg_layout_redirect_edge_and_branch): Likewise.

From-SVN: r268835

The 5 new builtins vec_sbox_be, vec_cipher_be, vec_cipherlast_be, vec_ncipher_be
and vec_ncipherlast_be only support vector unsigned char type parameters.
Add new instruction crypto_vsbox_<mode> and crypto_<CR_insn>_<mode> to handle
them accordingly, where the new mode CR_vqdi can be expanded to vector unsigned
long long for none _be postfix builtins or vector unsigned char for _be postfix
builtins.

gcc/ChangeLog

2019-02-13  Xiong Hu Luo  <luoxhu@linux.vnet.ibm.com>

	* config/rs6000/altivec.h (vec_sbox_be, vec_cipher_be,
	vec_cipherlast_be, vec_ncipher_be, vec_ncipherlast_be): New #defines.
	* config/rs6000/crypto.md (CR_vqdi): New define_mode_iterator.
	(crypto_vsbox_<mode>, crypto_<CR_insn>_<mode>): New define_insns.
	* config/rs6000/rs6000-builtin.def (VSBOX_BE): New BU_CRYPTO_1.
	(VCIPHER_BE, VCIPHERLAST_BE, VNCIPHER_BE, VNCIPHERLAST_BE):
	New BU_CRYPTO_2.
	* config/rs6000/rs6000.c (builtin_function_type)
	<CRYPTO_BUILTIN_VSBOX_BE, CRYPTO_BUILTIN_VCIPHER_BE,
	CRYPTO_BUILTIN_VCIPHERLAST_BE, CRYPTO_BUILTIN_VNCIPHER_BE,
	CRYPTO_BUILTIN_VNCIPHERLAST_BE>: New switch options.
	* doc/extend.texi (vec_sbox_be, vec_cipher_be, vec_cipherlast_be,
	vec_ncipher_be, vec_ncipherlast_be): New builtin functions.

gcc/testsuite/ChangeLog

2019-02-13  Xiong Hu Luo  <luoxhu@linux.vnet.ibm.com>

	* gcc.target/powerpc/crypto-builtin-1.c
	(crypto1_be, crypto2_be, crypto3_be, crypto4_be, crypto5_be):
	New testcases.

From-SVN: r268834

From-SVN: r268833

	PR go/89193
	* Makefile.am (mostlyclean-local): Avoid getting an error from
	chmod.  Remove check-vet-dir and gocache-test.
	* Makefile.in: Regenerate.

From-SVN: r268830

	* doc/invoke.texi (RS/6000 and PowerPC Options): Remove duplicate
	-maltivec. Delete -maltivec=be and -maltivec=le documentation.

From-SVN: r268829

    
    It's not defined on the Hurd.
    
    Reviewed-on: https://go-review.googlesource.com/c/161963

From-SVN: r268828

In this PR, we were unnecessarily rejecting a constexpr initializer_list
with no elements.  This seems like a fairly useless degenerate case, but it
makes sense to avoid allocating an underlying array at all if there are no
elements and instead use a null pointer, like the initializer_list default
constructor.

If the (automatic storage duration) list does have initializer elements, we
continue to reject the declaration, because the initializer_list ends up
referring to an automatic storage duration temporary array, which is not a
suitable constant initializer.  If we make it static, it should be OK
because we refer to a static array.  The second hunk fixes that case.  It
also means we won't diagnose some real errors in templates, but those
diagnostics aren't required, and we'll get them when the template is
instantiated.

	* call.c (convert_like_real) [ck_list]: Don't allocate a temporary
	array for an empty list.
	* typeck2.c (store_init_value): Don't use cxx_constant_init in a
	template.

From-SVN: r268827

i386 backend has

INT_MODE (OI, 32);
INT_MODE (XI, 64);

So, XI_MODE represents 64 INTEGER bytes = 64 * 8 = 512 bit operation,
in case of const_1, all 512 bits set.

We can load zeros with narrower instruction, (e.g. 256 bit by inherent
zeroing of highpart in case of 128 bit xor), so TImode in this case.

Some targets prefer V4SF mode, so they will emit float xorps for zeroing

Then the introduction of AVX512F fubared everything by overloading the
meaning of insn mode.

How should we use INSN mode,  MODE_XI, in standard_sse_constant_opcode
and patterns which use standard_sse_constant_opcode? 2 options:

1.  MODE_XI should only used to check if EXT_REX_SSE_REG_P is true
in any register operand.  The operand size must be determined by operand
itself , not by MODE_XI.  The operand encoding size should be determined
by the operand size, EXT_REX_SSE_REG_P and AVX512VL.
2. MODE_XI should be used to determine the operand encoding size.
EXT_REX_SSE_REG_P and AVX512VL should be checked for encoding
instructions.

gcc/

	PR target/89229
	* config/i386/i386.md (*movoi_internal_avx): Revert revision
	268678 and revision 268657.
	(*movti_internal): Likewise.

gcc/testsuite/

	PR target/89229
	* gcc.target/i386/pr89229-1.c: New test.

From-SVN: r268811

Adds missing HPPA support in std.experimental.allocator.

Reviewed-on: https://github.com/dlang/phobos/pull/6838

From-SVN: r268810

The following insn:

(insn (set (reg:DI %r2)
           (sign_extend:DI (mem:SI
            (const:DI (plus:DI (symbol_ref:DI ("*.LC0"))
                               (const_int 16)))))))

is correctly recognized by LRA as RIL alternative of extendsidi2
define_insn.  However, when recognition runs after LRA, it returns RXY
alternative, which is incorrect, since the offset 16 points past the
end of of *.LC0 literal pool entry.  Such addresses are normally
rejected by s390_decompose_address ().

This inconsistency confuses annotate_constant_pool_refs: the selected
alternative makes it proceed with annotation, only to find that the
annotated address is invalid, causing ICE.

This patch fixes the root cause, namely, that s390_check_qrst_address ()
behaves differently during and after LRA.

gcc/ChangeLog:

2019-02-12  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/89233
	* config/s390/s390.c (s390_decompose_address): Update comment.
	(s390_check_qrst_address): Reject invalid address forms after
	LRA.

gcc/testsuite/ChangeLog:

2019-02-12  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/89233
	* gcc.target/s390/pr89233.c: New test.

From-SVN: r268798

2018-01-12  Bill Schmidt  <wschmidt@linux.ibm.com>

	* gcc.target/powerpc/vec-sld-modulo.c: Require p8vector_hw.
	* gcc.target/powerpc/vec-srad-modulo.c: Likewise.
	* gcc.target/powerpc/vec-srd-modulo.c: Likewise.

From-SVN: r268797

The call to bsearch in dwarf_lookup_pc can have NULL as base argument when
the nmemb argument is 0.  The base argument is required to be pointing to the
initial member of an array of nmemb objects.  It is not specified what
constitutes a valid pointer to an array of 0 objects, but glibc declares base
with attribute non-null, so the NULL will trigger a sanitizer runtime error.

Fix this by only calling bsearch if nmemb != 0.

2019-02-12  Tom de Vries  <tdevries@suse.de>

	PR libbacktrace/81983
	* dwarf.c (dwarf_lookup_pc): Don't call bsearch if nmemb == 0.

From-SVN: r268796

2019-02-12  Martin Liska  <mliska@suse.cz>

	PR lto/88876
	* ipa-pure-const.c (propagate_pure_const): Revert hunk as
	we need default values of funct_state for a function that
	is not optimized.

From-SVN: r268795

When a node is removed from a splay tree, the splay tree was
not using the function splay_tree_delete_key_fn to release the key.
This was causing a leak, fixed by Tom Tromey.

This patch fixes another key leak, that happens when a key equal to
a key already present is inserted.  In such a case, we have to release
the old KEY.
Note that this is based on the assumption that the caller always
allocates a new KEY when doing an insert.

Also, clarify the documentation about when the release functions are
called.

2019-02-11  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* splay-tree.h (splay_tree_delete_key_fn): Update comment.
	(splay_tree_delete_value_fn): Likewise.

libiberty/ChangeLog
2019-02-11  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* splay-tree.c (splay_tree_insert): Also release old KEY in case
	of insertion of a key equal to an already present key.
	(splay_tree_new_typed_alloc): Update comment.

From-SVN: r268793

asan.c (asan_expand_mark_ifn): Take into account the alignment of the object to pick the size of stores on...

	* asan.c (asan_expand_mark_ifn): Take into account the alignment of
	the object to pick the size of stores on strict-alignment platforms.

	* config/sparc/sparc.md (*movsi_insn): Minor tweak.
	(*movdi_insn_sp32): Likewise.
	(*movdi_insn_sp64): Likewise.

From-SVN: r268792

	PR lto/88777
	* cgraphunit.c (analyze_functions): Clear READONLY flag for external
	types that needs constructiong.
	* tree.h (may_be_aliased): Do not check TYPE_NEEDS_CONSTRUCTING.

From-SVN: r268791

2019-02-12  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/89253
	* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
	duplicate the loop.

	* gfortran.dg/pr89253.f: New testcase.

From-SVN: r268790

PR lto/88147 reports an assertion failure due to a bogus location_t value
when adding a line to a pre-existing line map, when there's a large
difference between the two line numbers.

For some "large differences", this leads to a location_t value that exceeds
LINE_MAP_MAX_LOCATION, in which case linemap_line_start returns 0.  This
isn't ideal, but at least should lead to safe degradation of location
information.

However, if the difference is very large, it's possible for the line
number offset (relative to the start of the map) to be sufficiently large
that overflow occurs when left-shifted by the column-bits, and hence
the check against the LINE_MAP_MAX_LOCATION limit fails, leading to
a seemingly-valid location_t value, but encoding the wrong location.  This
triggers the assertion failure:
  linemap_assert (SOURCE_LINE (map, r) == to_line);

The fix (thanks to Martin) is to check for overflow when determining
whether to reuse an existing map, and to not reuse it if it would occur.

gcc/ChangeLog: David Malcolm  <dmalcolm@redhat.com>
	PR lto/88147
	* input.c (selftest::test_line_offset_overflow): New selftest.
	(selftest::input_c_tests): Call it.

libcpp/ChangeLog: Martin Liska  <mliska@suse.cz>
	PR lto/88147
	* line-map.c (linemap_line_start): Don't reuse the existing line
	map if the line offset is sufficiently large to cause overflow
	when computing location_t values.

From-SVN: r268789

From-SVN: r268788

    
    Also stop converting st_dev on Hurd; it shouldn't appear, but if it
    somehow does we don't want to convert it.
    
    Reviewed-on: https://go-review.googlesource.com/c/161961

From-SVN: r268785

When we're instantiating a generic lambda, its enclosing context will
have already been instantiated, so we need to look for that as well.

	* pt.c (enclosing_instantiation_of): Also check
	instantiated_lambda_fn_p for the template context.

From-SVN: r268784

	* pt.c (tsubst_copy_and_build) <case CONSTRUCTOR>: Return early for
	null member pointer value.

	* g++.dg/cpp0x/nullptr40.C: New test.
	* g++.dg/cpp0x/nullptr41.C: New test.

From-SVN: r268781

re PR c++/88977 (__builtin_is_constant_evaluated() as function template argument causes substitution failure)

	PR c++/88977
	* pt.c (convert_nontype_argument): Pass true as manifestly_const_eval
	to maybe_constant_value calls.

	* g++.dg/cpp2a/is-constant-evaluated7.C: New test.

From-SVN: r268780

From-SVN: r268779

From-SVN: r268778

Fix test errors on targets which do not support pthreads.

Committed as obvious.

    testsuite/
	PR tree-optimization/86637
	* gcc.c-torture/compile/pr86637-2.c: Test pthread and graphite target.

From-SVN: r268777

gcc/ChangeLog:

	PR tree-optimization/88771
	* gimple-ssa-warn-restrict.c (pass_wrestrict::gate): Also enable
	when -Wstringop-overflow is set.
	(builtin_memref::builtin_memref): Adjust excessive upper bound
	only when lower bound is not excessive.
	(maybe_diag_overlap): Detect and diagnose excessive bounds via
	-Wstringop-ovefflow.
	(maybe_diag_offset_bounds): Rename...
	(maybe_diag_access_bounds): ...to this.
	(check_bounds_or_overlap): Adjust for name change above.

gcc/testsuite/ChangeLog:

	PR tree-optimization/88771
	* gcc.dg/Wstringop-overflow-8.c: New test.
	* gcc.dg/Wstringop-overflow-9.c: New test.
	* gcc.dg/Warray-bounds-40.c: New test.
	* gcc.dg/builtin-stpncpy.c: Adjust.
	* gcc.dg/builtin-stringop-chk-4.c: Adjust.
	* g++.dg/opt/memcpy1.C: Adjust.

From-SVN: r268775

gcc/ChangeLog:

	PR c++/87996
	* builtins.c (max_object_size): Move from here...
	* builtins.h (max_object_size): ...and here...
	* tree.c (max_object_size): ...to here...
	* tree.h (max_object_size): ...and here.

gcc/c-family/ChangeLog:

	PR c++/87996
	* c-common.c (invalid_array_size_error): New function.
	(valid_array_size_p): Call it.  Handle size as well as type.
	* c-common.h (valid_constant_size_p): New function.
	(enum cst_size_error): New type.

gcc/cp/ChangeLog:

	PR c++/87996
	* decl.c (compute_array_index_type_loc): Preserve signed sizes
	for diagnostics.  Call valid_array_size_p instead of error.
	* init.c (build_new_1): Compute size for diagnostic.  Call
	invalid_array_size_error
	(build_new): Call valid_array_size_p instead of error.

gcc/testsuite/ChangeLog:

	PR c++/87996
	* c-c++-common/array-5.c: New test.
	* c-c++-common/pr68107.c: Adjust text of diagnostics.
	* g++.dg/init/new38.C: Same.
	* g++.dg/init/new43.C: Same.
	* g++.dg/init/new44.C: Same.
	* g++.dg/init/new46.C: Same.
	* g++.dg/other/large-size-array.C: Same.
	* g++.dg/other/new-size-type.C: Same.
	* g++.dg/template/array30.C: Same.
	* g++.dg/template/array32.C: New test.
	* g++.dg/template/dependent-name3.C: Adjust.
	* gcc.dg/large-size-array-3.c: Same.
	* gcc.dg/large-size-array-5.c: Same.
	* gcc.dg/large-size-array.c: Same.
	* g++.old-deja/g++.brendan/array1.C: Same.
	* g++.old-deja/g++.mike/p6149.C: Same.

From-SVN: r268774

gcc/testsuite/ChangeLog:

	* gcc.dg/tree-prof/inliner-1.c: Correct comments.

From-SVN: r268773