Replace ASM_OUTPUT_LABEL with fprintf so that internal labels in property
note section are unchanged by -fleading-underscore.

gcc/

	PR target/85404
	* config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
	Replace ASM_OUTPUT_LABEL with fprintf.

gcc/testsuite/

	PR target/85404
	* gcc.target/i386/pr85404.c: New test.

From-SVN: r259498

Program received signal SIGSEGV, Segmentation fault.
__stack_split_initialize ()
    at /export/gnu/import/git/sources/gcc/libgcc/config/i386/morestack.S:751
751		leaq	-16000(%rsp),%rax	# We should have at least 16K.
Missing separate debuginfos, use: dnf debuginfo-install libgcc-8.0.1-0.21.0.fc28.x86_64
(gdb) disass
Dump of assembler code for function __stack_split_initialize:
=> 0x0000000000402858 <+0>:	lea    -0x3e80(%rsp),%rax
   0x0000000000402860 <+8>:	mov    %rax,%fs:0x70
   0x0000000000402869 <+17>:	sub    $0x8,%rsp
   0x000000000040286d <+21>:	mov    %rsp,%rdi
   0x0000000000402870 <+24>:	mov    $0x3e80,%esi
   0x0000000000402875 <+29>:	callq  0x401810 <__generic_morestack_set_initial_sp>
   0x000000000040287a <+34>:	add    $0x8,%rsp
   0x000000000040287e <+38>:	retq
End of assembler dump.
(gdb)

This patch adds the missing ENDBR to __stack_split_initialize.

	PR libgcc/85379
	* config/i386/morestack.S (__stack_split_initialize): Add
	_CET_ENDBR.

From-SVN: r259497

-fcf-protection -mcet can't be used with IFUNC features, like symbol
multiversioning or target clone, since IBT/SHSTK are applied to the whole
program and they may be disabled in some functions.  But -fcf-protection
is implemented with multi-byte NOPs on all 64-bit processors as well as
32-bit processors starting with Pentium Pro.  If -fcf-protection requires
-mcet, IFUNC features can't be used on Linux when -fcf-protection is
enabled by default.

This patch changes -fcf-protection to implement indirect branch and
return address tracking with multi-byte NOPs.  -mibt and -mshstk are
changed to only enable CET built-in functions.  CET tests are updated
to allow -fcf-protection without -mibt, -mshstk and -mcet on x86.
-fcf-protection=none are also added to tests which fail with
-fcf-protection so that -fcf-protection can be added to RUNTESTFLAGS
to verify -fcf-protection implementation.

gcc/

	PR target/85417
	* config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
	Check flag_cf_protection instead of TARGET_IBT and TARGET_SHSTK.
	* config/i386/i386-c.c (ix86_target_macros_internal): Also
	define __IBT__ and __SHSTK__ for -fcf-protection.
	* config/i386/i386.c (pass_insert_endbranch::gate): Don't check
	TARGET_IBT.
	(ix86_trampoline_init): Likewise.
	(x86_output_mi_thunk): Likewise.
	(ix86_notrack_prefixed_insn_p): Likewise.
	(ix86_option_override_internal): Don't disallow -fcf-protection.
	* config/i386/i386.md (rdssp<mode>): Also enable for
	-fcf-protection.
	(incssp<mode>): Likewise.
	(nop_endbr): Likewise.
	* config/i386/i386.opt (mcet): Change help message to built-in
	functions only.
	(mibt): Likewise.
	(mshstk): Likewise.
	* doc/invoke.texi: Remove -mcet, -mibt and -mshstk condition
	on -fcf-protection.  Change -mcet, -mibt and -mshstk to only
	enable CET built-in functions.

gcc/testsuite/

	PR target/85417
	* c-c++-common/attr-nocf-check-1.c: Compile with
	-fcf-protection=none.
	* c-c++-common/attr-nocf-check-3.c: Likewise.
	* gcc.dg/march-generic.c: Likewise.
	* gcc.target/i386/align-limit.c: Likewise.
	* gcc.target/i386/cet-notrack-icf-1.c: Likewise.
	* gcc.target/i386/cet-notrack-icf-3.c: Likewise.
	* gcc.target/i386/cet-property-2.c: Likewise.
	* gcc.target/i386/ret-thunk-26.c: Likewise.
	* c-c++-common/fcf-protection-1.c: Remove dg-error for x86
	targets.
	* c-c++-common/fcf-protection-2.c: Likewise.
	* c-c++-common/fcf-protection-3.c: Likewise.
	* c-c++-common/fcf-protection-5.c: Likewise.
	* c-c++-common/fcf-protection-6.c: Likewise.
	* c-c++-common/fcf-protection-7.c: Likewise.
	* gcc.target/i386/cet-label-3.c: New test.
	* gcc.target/i386/cet-property-3.c: Likewise.
	* gcc.target/i386/cet-sjlj-7.c: Likewise.
	* gcc.target/i386/pr85417-1.c: Likewise.
	* gcc.target/i386/indirect-thunk-attr-7.c: Also expect
	__x86_indirect_thunk_nt_(r|e)ax
	* gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
	* gcc.target/i386/pr85403.c: Remove dg-error,

From-SVN: r259496

2018-04-19  Sebastian Peryt  <sebastian.peryt@intel.com>

gcc/

	* common/config/i386/i386-common.c 
	(OPTION_MASK_ISA_MOVDIRI_SET, OPTION_MASK_ISA_MOVDIR64B_SET,
	OPTION_MASK_ISA_MOVDIRI_UNSET,
	OPTION_MASK_ISA_MOVDIR64B_UNSET): New defines.
	(ix86_handle_option): Handle -mmovdiri and -mmovdir64b.
	* config.gcc (movdirintrin.h): New header.
	* config/i386/cpuid.h (bit_MOVDIRI,
	bit_MOVDIR64B): New bits.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect -mmovdiri
	and -mmvodir64b.
	* config/i386/i386-builtin-types.def ((VOID, PUNSIGNED, UNSIGNED),
	(VOID, PVOID, PCVOID)): New function types.
	* config/i386/i386-builtin.def (__builtin_ia32_directstoreu_u32,
	__builtin_ia32_directstoreu_u64,
	__builtin_ia32_movdir64b): New builtins.
	* config/i386/i386-c.c (__MOVDIRI__, __MOVDIR64B__): New.
	* config/i386/i386.c (ix86_target_string): Added -mmovdir64b
	and -mmovdiri.
	(ix86_valid_target_attribute_inner_p): Ditto.
	(ix86_expand_special_args_builtin): Added VOID_FTYPE_PUNSIGNED_UNSIGNED
	and VOID_FTYPE_PUNSIGNED_UNSIGNED.
	(ix86_expand_builtin): Expand IX86_BUILTIN_MOVDIR64B.
	* config/i386/i386.h (TARGET_MOVDIRI, TARGET_MOVDIRI_P,
	TARGET_MOVDIR64B, TARGET_MOVDIR64B_P): New.
	* config/i386/i386.md (UNSPECV_MOVDIRI, UNSPECV_MOVDIR64B): New.
	(movdiri<mode>, movdir64b_<mode>): New.
	* config/i386/i386.opt: Add -mmovdiri and -mmovdir64b.
	* config/i386/immintrin.h: Include movdirintrin.h.
	* config/i386/movdirintrin.h: New file.
	* doc/invoke.texi: Added -mmovdiri and -mmovdir64b.

gcc/testsuite/

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

From-SVN: r259495

re PR rtl-optimization/85455 (ICE in verify_loop_structure, at cfgloop.c:1708 (error: basic block 3 should be marked irreducible))

2018-04-19  Richard Biener  <rguenther@suse.de>

	PR middle-end/85455
	* cfg.c (clear_bb_flags): When loop state says we have
	marked irreducible regions also preserve BB_IRREDUCIBLE_LOOP.

	* gcc.dg/pr85455.c: New testcase.

From-SVN: r259494

2018-04-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84737
	* tree-vect-data-refs.c (vect_copy_ref_info): New function
	copying restrict info.
	(vect_setup_realignment): Use it.
	* tree-vectorizer.h (vect_copy_ref_info): Declare.
	* tree-vect-stmts.c (vectorizable_store): Copy ref info from
	the first DR to all generated stores.
	(vectorizable_load): Likewise for loads.

From-SVN: r259493

2018-04-19  Christophe Lyon  <christophe.lyon@linaro.org>

	* g++.dg/lto/pr85405_0.C: Require shared and fpic effective
	targets.
	* g++.dg/lto/pr85405b_0.C: Likewise.
	* g++.dg/lto/pr84805_0.C: Likewise.

From-SVN: r259492

	libgomp/
	PR libfortran/85166
	* testsuite/libgomp.oacc-fortran/abort-1.f90: Switch back to "call
	abort".
	* testsuite/libgomp.oacc-fortran/abort-2.f90: Likewise.

	libgfortran/
	PR libfortran/85166
	PR libgomp/85463
	* runtime/minimal.c (stop_numeric): Reimplement.
	(stop_string, error_stop_string, error_stop_numeric): New
	functions.
	libgomp/
	PR libgomp/85463
	* testsuite/libgomp.oacc-fortran/error_stop-1.f: New file.
	* testsuite/libgomp.oacc-fortran/error_stop-2.f: Likewise.
	* testsuite/libgomp.oacc-fortran/error_stop-3.f: Likewise.
	* testsuite/libgomp.oacc-fortran/stop-1.f: Likewise.
	* testsuite/libgomp.oacc-fortran/stop-2.f: Likewise.
	* testsuite/libgomp.oacc-fortran/stop-3.f: Likewise.

From-SVN: r259491

2018-04-19  Martin Liska  <mliska@suse.cz>

	* lto-symtab.c (lto_symtab_resolve_symbols): Do not bail out
	for multiple PREVAILING_DEF_IRONLY for common symbols.

From-SVN: r259490

	PR tree-optimization/85446
	* match.pd ((intptr_t) x eq/ne CST to x eq/ne (typeof x) cst): Require
	the integral and pointer types to have the same precision.

From-SVN: r259488

cet.m4 (GCC_CET_FLAGS): Default to --disable-cet, replace --enable-cet=default with --enable-cet=auto.

	* config/cet.m4 (GCC_CET_FLAGS): Default to --disable-cet, replace
	--enable-cet=default with --enable-cet=auto.

	* doc/install.texi: Document --disable-cet being the default and
	--enable-cet=auto.

	* configure: Regenerated.

From-SVN: r259487

PR c++/80290
* cp-tree.h (tinst_level::free): Fix whitespace.

From-SVN: r259486

From-SVN: r259483

2018-04-18  Martin Liska  <mliska@suse.cz>

	* ipa-devirt.c (odr_subtypes_equivalent_p): Fix GNU coding
	style.
2018-04-18  Martin Liska  <mliska@suse.cz>

	* lto.c (lto_read_decls): Fix GNU coding style and typos.

From-SVN: r259480

2018-04-18  Martin Liska  <mliska@suse.cz>

	PR ipa/83983
	PR ipa/85391
	* lto.c (cmp_type_location): New function.
	(lto_read_decls): First collect all types, then
	sort them according by location before register_odr_type
	is called.
2018-04-18  Martin Liska  <mliska@suse.cz>

	PR ipa/83983
	PR ipa/85391
	* g++.dg/lto/pr83121_1.C (struct Environment): Adjust expected
	output.

From-SVN: r259479

2018-04-18  Martin Liska  <mliska@suse.cz>

	Revert
	2018-03-02  Eric Botcazou  <ebotcazou@adacore.com>

	PR ipa/83983
	* ipa-devirt.c (odr_subtypes_equivalent_p): Get the ODR type of both
	arguments if they are comparable.

From-SVN: r259478

2018-04-18  Martin Liska  <mliska@suse.cz>

	Revert
	2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>

	PR lto/84805
	* ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
	incomplete types.

From-SVN: r259477

Since __morestack will jump back to its callee via indirect call, we
need to insert ENDBR after calling __morestack.

gcc/

	PR target/85388
	* config/i386/i386.c (ix86_expand_split_stack_prologue): Insert
	ENDBR after calling __morestack.

gcc/testsuite/

	PR target/85388
	* gcc.dg/pr85388-1.c: New test.
	* gcc.dg/pr85388-2.c: Likewise.
	* gcc.dg/pr85388-3.c: Likewise.
	* gcc.dg/pr85388-4.c: Likewise.
	* gcc.dg/pr85388-5.c: Likewise.
	* gcc.dg/pr85388-6.c: Likewise.

From-SVN: r259475

2018-04-18  Jonathan Wakely  <jwakely@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR libstdc++/85442
	* src/c++11/Makefile.am: Don't generate debuginfo again for
	cxx11-ios_failure-lt.s and cxx11-ios_failure.s files.
	* src/c++11/Makefile.in: Regenerate.

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

From-SVN: r259467

	PR lto/85391
	* lto.c (lto_read_decls): Do not test TYPE_CANONICAL before registering odr
	types.
	* g++.dg/lto/pr83121_0.C: Update template.
	* g++.dg/lto/pr83121_1.C: Update template.
	* g++.dg/lto/pr84805_0.C: Update template.
	* g++.dg/lto/pr84805_1.C: Update template.
	* g++.dg/lto/pr84805_2.C: Update template.

Co-Authored-By: Martin Liska <mliska@suse.cz>

From-SVN: r259464

	PR libstdc++/84442
	* testsuite/30_threads/thread/cons/terminate.cc
	[!_GLIBCXX_USE_C99_STDLIB] : Use _exit or std::exit instead of _Exit.

From-SVN: r259463

	PR jit/85384
	* acx.m4 (GCC_BASE_VER): Remove \$\$ from sed expression.

	* configure.ac (gcc-driver-name.h): Honor --with-gcc-major-version
	by using gcc_base_ver to generate a gcc_driver_version, and use
	it when generating GCC_DRIVER_NAME.
	* configure: Regenerate.

	* configure: Regenerate.

From-SVN: r259462

re PR target/81084 (powerpcspe port full of confusing configury / command-line options not related to SPE)

	PR target/81084
	* config.gcc: Obsolete powerpc*-*-*spe*.

From-SVN: r259461

/cp
2018-04-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84630
	* pt.c (tsubst_lambda_expr): Check begin_lambda_type return value
	for error_mark_node.

/testsuite
2018-04-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84630
	* g++.dg/cpp0x/pr84630.C: New.

From-SVN: r259460

re PR sanitizer/85389 (posix_memalign() crash with address sanitizer when passing invalid arguments)

	PR sanitizer/85389
	* asan/asan_allocator.h (kAllocatorSpace): For __powerpc64__ change
	from 0xa0000000000ULL to ~(uptr)0.

From-SVN: r259459

	PR c++/84463
	* typeck.c (cp_build_addr_expr_1): Move handling of offsetof-like
	tricks from here to ...
	* cp-gimplify.c (cp_fold) <case ADDR_EXPR>: ... here.  Only use it
	if INDIRECT_REF's operand is INTEGER_CST cast to pointer type.

	* g++.dg/cpp0x/constexpr-nullptr-1.C: Add -O1 to dg-options.
	* g++.dg/cpp0x/constexpr-nullptr-2.C: Expect different diagnostics
	in two cases.  Uncomment two other tests and add expected dg-error for
	them.
	* g++.dg/init/struct2.C: Cast to int rather than long to avoid
	-Wnarrowing diagnostics on some targets for c++11.
	* g++.dg/parse/array-size2.C: Remove xfail.
	* g++.dg/cpp0x/constexpr-84463.C: New test.

From-SVN: r259458

tinst_level objects are created during template instantiation, and
they're most often quite short-lived, but since there's no intervening
garbage collection, they accumulate throughout the pass while most by
far could be recycled after a short while.  The original testcase in
PR80290, for example, creates almost 55 million tinst_level objects,
all but 10 thousand of them without intervening GC, but we don't need
more than 284 of them live at a time.

Furthermore, in many cases, TREE_LIST objects are created to stand for
the decl in tinst_level.  In most cases, those can be recycled as soon
as the tinst_level object is recycled; in some relatively common
cases, they are modified and reused in up to 3 tinst_level objects.
In the same testcase, TREE_LISTs are used in all but 3 thousand of the
tinst_level objects, and we don't need more than 89 tinst_level
objects with TREE_LISTs live at a time.  Furthermore, all but 2
thousand of those are created without intervening GC.

This patch arranges for tinst_level objects to be refcounted (I've
seen as many as 20 live references to a single tinst_level object in
my testing), and for pending_template, tinst_level and TREE_LIST
objects that can be recycled to be added to freelists; that's much
faster than ggc_free()ing them and reallocating them shortly
thereafter.  In fact, the introduction of such freelists is what makes
this entire patch lighter-weight, when it comes to memory use, and
faster.  With refcounting alone, the total memory footprint was still
about the same, and we spent more time.

In order to further reduce memory use, I've arranged for us to create
TREE_LISTs lazily, only at points that really need them (when printing
error messages).  This grows tinst_level by an additional pointer, but
since a TREE_LIST holds a lot more than an extra pointer, and
tinst_levels with TREE_LISTs used to be allocated tens of thousands of
times more often than plain decl ones, we still save memory overall.

I was still not quite happy about growing memory use in cases that
used template classes but not template overload resolution, so I
changed the type of the errors field to unsigned short, from int.
With that change, in_system_header_p and refcount move into the same
word or half-word that used to hold errors, releasing a full word,
bringing tinst_level back to its original size, now without any
padding.

The errors field is only used to test whether we've had any errors
since the expansion of some template, to skip the expansion of further
templates.  If we get 2^16 errors or more, it is probably reasonable
to refrain from expanding further templates, even if we would expand
them before this change.

With these changes, compile time for the original testcase at -O0,
with default checking enabled, is cut down by some 3.7%, total GCable
memory allocation is cut down by almost 20%, and total memory use (as
reported by GNU time as maxresident) is cut down by slightly over 15%.


for  gcc/cp/ChangeLog

	PR c++/80290
	* cp-tree.h (struct tinst_level): Split decl into tldcl and
	targs.  Add private split_list_p, tree_list_p, and not_list_p
	inline const predicates; to_list private member function
	declaration; free public member function declaration; list_p,
	get_node and maybe_get_node accessors, and refcount data
	member.  Narrow errors to unsigned short.
	* error.c (print_instantiation_full_context): Use new
	accessors.
	(print_instantiation_partial_context_line): Likewise.  Drop
	const from tinst_level-typed parameter.
	* mangle.c (mangle_decl_string): Likewise.
	* pt.c (freelist): New template class.
	(tree_list_freelist_head): New var.
	(tree_list_freelist): New fn, along with specializations.
	(tinst_level_freelist_head): New var.
	(pending_template_freelist_head): Likewise.
	(tinst_level_freelist, pending_template_freelist): New fns.
	(tinst_level::to_list, tinst_level::free): Define.
	(inc_refcount_use, dec_refcount_use): New fns for tinst_level.
	(set_refcount_ptr): New template fn.
	(add_pending_template): Adjust for refcounting, freelists and
	new accessors.
	(neglectable_inst_p): Take a NULL d as a non-DECL.
	(limit_bad_template_recursion): Use new accessors.
	(push_tinst_level): New overload to create the list.
	(push_tinst_level_loc): Make it static, split decl into two
	args, adjust tests and initialization to cope with split
	lists, use freelist, adjust for refcounting.
	(push_tinst_level_loc): New wrapper with the old interface.
	(pop_tinst_level): Adjust for refcounting.
	(record_last_problematic_instantiation): Likewise.
	(reopen_tinst_level): Likewise.  Use new accessors.
	(instantiate_alias_template): Adjust for split list.
	(fn_type_unification): Likewise.
	(get_partial_spec_bindings): Likewise.
	(instantiate_pending_templates): Use new accessors.  Adjust
	for refcount.  Release pending_template to freelist.
	(instantiating_current_function_p): Use new accessors.

From-SVN: r259457

[gcc/testsuite]

2018-04-17  Bill Schmidt  <wschmidt@linux.ibm.com>

	* gcc.target/powerpc/undef-bool-2.c: Add -mvsx.
	* gcc.target/g++.dg/ext/undef-bool-1.C: Likewise.

From-SVN: r259456

From-SVN: r259455

    
    Bring in https://golang.org/cl/98616 from gc tip.
    
    Original CL description:
    
        This change modifies Go to disable loading of users' shell history for
        TestTerminalSignal tests. TestTerminalSignal, as part of its workload,
        will execute a new interactive bash shell. Bash will attempt to load the
        user's history from the file pointed to by the HISTFILE environment
        variable. For users with large histories that may take up to several
        seconds, pushing the whole test past the 5 second timeout and causing
        it to fail.
    
    Reviewed-on: https://go-review.googlesource.com/107624

From-SVN: r259452

re PR debug/84637 (gcc/dbxout.c:684:14: runtime error: negation of -9223372036854775808 cannot be represented in type 'long int'; cast to an unsigned type to negate this value to itself)

	PR debug/84637
	* dbxout.c (dbxout_int): Perform negation in unsigned int type.
	(stabstr_D): Change type of unum from unsigned int to
	unsigned HOST_WIDE_INT.  Perform negation in unsigned HOST_WIDE_INT
	type.

From-SVN: r259451

	gcc/
	PR 84856
	* config/riscv/riscv.c (riscv_compute_frame_info): Add calls to
	RISCV_STACK_ALIGN when using outgoing_args_size and pretend_args_size.
	Set arg_pointer_offset after using pretend_args_size.

From-SVN: r259449

re PR rtl-optimization/85431 (UBSAN: ../../gcc/dse.c:303:15: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int')

	PR rtl-optimization/85431
	* dse.c (record_store): Ignore zero width stores.

From-SVN: r259448

	PR testsuite/85326
	* g++.dg/other/pr81422.C: Require effective target tls and c++11.
	* g++.dg/other/pr60675.C: Likewise.  Remove -std=c++11 from dg-options.
	* g++.dg/other/sve_tls_2.C: Require effective target tls.

From-SVN: r259447

	PR sanitizer/85230
	* asan.c (handle_builtin_stack_restore): Adjust comment.  Emit
	__asan_allocas_unpoison call and last_alloca_addr = new_sp before
	__builtin_stack_restore rather than after it.
	* builtins.c (expand_asan_emit_allocas_unpoison): Pass
	arg1 + (virtual_dynamic_stack_rtx - stack_pointer_rtx) as second
	argument instead of virtual_dynamic_stack_rtx.

From-SVN: r259446

    
    Reviewed-on: https://go-review.googlesource.com/100955

From-SVN: r259445

	* be.po, da.po, de.po, el.po, es.po, fi.po, fr.po, hr.po, id.po,
	ja.po, nl.po, ru.po, sr.po, sv.po, tr.po, uk.po, vi.po, zh_CN.po,
	zh_TW.po: Update.

From-SVN: r259443

gcc/ChangeLog:

2018-04-13  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* config/rs6000/rs6000-protos.h (rs6000_builtin_is_supported_p):
	New prototype.
	* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
	Add note to error message to explain internal mapping of overloaded
	built-in function name to non-overloaded built-in function name.
	* config/rs6000/rs6000.c (rs6000_builtin_is_supported_p): New
	function.

gcc/testsuite/ChangeLog:

2018-04-13  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* gcc.target/powerpc/bfp/scalar-extract-sig-5.c: Simplify to
	prevent cascading of errors and change expected error message.
	* gcc.target/powerpc/bfp/scalar-test-neg-4.c: Restrict this test
	to 64-bit targets.
	* gcc.target/powerpc/bfp/scalar-test-data-class-8.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-data-class-9.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-data-class-10.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-insert-exp-11.c: Change expected
	error message.
	* gcc.target/powerpc/bfp/scalar-extract-exp-5.c: Likewise.

From-SVN: r259442

re PR target/85424 (The __builtin_packlongdouble function might have issues with the output overlapping the inputs)

2018-04-17  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/85424
	* config/rs6000/rs6000.md (pack<mode>): Do not try handle a pack
	where the inputs overlap with the output.

From-SVN: r259441

	* backtrace.c: Revert last two changes.  Don't call mmap
	directly.

From-SVN: r259440