* config/i386/i386.md (@leave_<mode>): New expander.
	(*leave): Rename from leave.
	(*leave_rex64): Rename from leave_rex64.
	(@monitorx_<mode>): Rename from monitorx_<mode>.
	(@clzero_<mode>): Rename from clzero_<mode>.
	* config/i386/sse.md (@sse3_monitor_<mode>): Rename from
	sse3_monitor_<mode>.
	* config/i386/i386.c (*ix86_gen_leave): Remove indirect function.
	(*ix86_gen_monitor): Ditto.
	(*ix86_gen_monitorx): Ditto.
	(*ix86_gen_clzero): Ditto.
	(*ix86_gen_one_cmpl2): Ditto.
	(ix86_emit_leave): Use gen_leave instead of ix86_gen_leave.
	* config/i386/i386-expand.c (ix86_expand_builtin)
	<case IX86_BUILTIN_MONITOR>: Use gen_sse3_monitor
	instead of ix86_gen_monitor.
	<case IX86_BUILTIN_MONITORX>: Use gen_monitorx
	instead of ix86_gen_monitorx.
	<case IX86_BUILTIN_CLZERO>: Use gen_clzero
	instead of ix86_gen_clzero.
	* config/i386/i386-options.c (ix86_option_override_internal):
	Do not initialize ix86_gen_leave, ix86_gen_monitor,
	ix86_gen_monitorx, ix86_gen_clzero and ix86_gen_one_cmpl2.

	* config/i386/i386.md (@tls_global_dynamic_64_<mode>):
	Rename from tls_global_dynamic_64_<mode>.
	(@tls_local_dynamic_base_64_<mode>): Rename from
	tls_local_dynamic_base_64_<mode>.
	* config/i386/i386.c (*ix86_gen_tls_global_dynamic_64):
	Remove indirect function.
	(*ix86_gen_tls_local_dynamic_base_64): Ditto.
	(legitimize_tls_address): Use gen_tls_global_dynamic_64 function
	instead of ix86_gen_tls_global_dynamic_64.
	Use gen_tls_local_dynamic_base_64 instead of
	ix86_gen_tls_local_dynamic_base_64.
	* config/i386/i386-options.c (ix86_option_override_internal):
	Do not initialize ix86_gen_tls_global_dynamic_64 and
	ix86_gen_tls_local_dynamic_base_64.

	* config/i386/i386.md (@pro_epilogue_adjust_stack_add_<mode>)
	Rename from pro_epilogue_adjust_stack_<mode>_add.
	(@pro_epilogue_adjust_stack_sub_<mode>)
	Rename from pro_epilogue_adjust_stack_<mode>_sub.
	(@allocate_stack_worker_probe_<mode>):
	Rename from allocate_stack_worker_probe_<mode>.
	(allocate_stack): Use gen_allocate_stack_worker_probe.
	(probe_stack): Use gen_probe_stack_1.
	(@probe_stack_1_<mode>): Rename from probe_stack_<mode>.
	(@adjust_stack_and_probe_<mode>): Rename from
	adjust_stack_and_probe<mode>.
	(@probe_stack_range_<mode>): Rename from probe_stack_range<mode>.
	(stack_protect_set): Use gen_stack_protect_set_1.
	(@stack_protect_set_1_<mode>): Rename from stack_protect_set_<mode>.
	(stack_protect_test): Use gen_stack_protect_test_1.
	(@stack_protect_test_1_<mode>): Rename from stack_protect_test_<mode>.
	* config/i386/i386.c (*ix86_gen_allocate_stack_worker):
	Remove indirect function.
	(*ix86_gen_adjust_stack_and_probe): Ditto.
	(*ix86_gen_probe_stack_range): Ditto.
	(pro_epilogue_adjust_stack): Use gen_pro_epilogue_adjust_stack_add
	instead of gen_pro_epilogue_adjust_stack_{si,di}_add.
	(ix86_adjust_stack_and_probe_stack_clash): Use
	gen_adjust_stack_and_probe instead of ix86_gen_adjust_stack_and_probe.
	(ix86_adjust_stack_and_probe): Ditto.
	(ix86_emit_probe_stack_range): Use gen_probe_stack_range instead
	of ix86_gen_probe_stack_range.
	(ix86_expand_prologue):  Use gen_pro_epilogue_adjust_stack_sub
	instead of gen_pro_epilogue_adjust_stack_{si,di}_sub.
	* config/i386/x86-tune-sched.c (ix86_macro_fusion_pair_p):
	Include insn-opinit.h.  Use code_for_stack_protect_test_1 instead of
	CODE_FOR_stack_protect_test_{si,di}.
	* config/i386/i386-options.c (ix86_option_override_internal):
	Do not initialize ix86_gen_allocate_stack_worker,
	ix86_gen_adjust_stack_and_probe and ix86_gen_probe_stack_range.

From-SVN: r271636

	* doc/xml/manual/appendix_contributing.xml: Update pointer to
	C++ standard at ansi.org.

From-SVN: r271635

Darwin requires PIC code in order to support PIE, amend the test scan-asms
to match this.

2019-05-26  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/i386/pr39013-1.c: Adjust scan-asms for PIE to
	account for PIC code on Darwin.
	* gcc.target/i386/pr39013-2.c: Likewise.
	* gcc.target/i386/pr64317.c: Likewise.

From-SVN: r271634

	* doc/invoke.texi (Link Options): Many editorial changes around
	-flinker-output.

From-SVN: r271633

	* config/pa/linux-unwind.h (pa32_fallback_frame_state): Add cast.

From-SVN: r271631

re PR fortran/90539 (481.wrf slowdown by 25% on Intel Kaby with -Ofast -march=native starting with r271377)

2019-05-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/90539
	* trans-types.c (get_formal_from_actual_arglist): Set rank
	and lower bound for assumed size arguments.

From-SVN: r271630

From-SVN: r271629

From-SVN: r271628

From-SVN: r271627

Darwin uses a different spelling for popcnt (popcnt instead of popcntw).
Check for this in the test.

2019-05-25  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/i386/pr59874-3.c: Use the spelling of popcnt
	expected for Darwin.

From-SVN: r271623

The test requests an alignment which exceeds the maximum object
file aligment for Darwin, rather than skipping it - test that we
see the expected error.

2019-05-25  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/i386/pr89261.c: Test that the alignment required
	by the test correctly produces the expected error on Darwin.

From-SVN: r271622

2019-05-25  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/i386/pr82659-3.c: Require alias support.

From-SVN: r271621

	* parser.c (cp_parser_constructor_declarator_p): Don't allow missing
	typename for friend declarations.

	* g++.dg/cpp2a/typename16.C: New test.
	* g++.dg/parse/friend13.C: New test.

From-SVN: r271619

From-SVN: r271618

	PR target/90530
	* config/pa/pa.c (pa_can_change_mode_class): Accept mode changes from
	DImode to SImode in floating-point registers on 64-bit target.
	* config/pa/pa.md (umulsidi3): Change nonimmediate_operand to
	register_operand in xmpyu patterns.

From-SVN: r271611

	* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE__CONDTEMP_.
	* tree.h (OMP_CLAUSE_DECL): Use OMP_CLAUSE__CONDTEMP_ instead of
	OMP_CLAUSE__REDUCTEMP_.
	* tree.c (omp_clause_num_ops, omp_clause_code_name): Add
	OMP_CLAUSE__CONDTEMP_.
	(walk_tree_1): Handle OMP_CLAUSE__CONDTEMP_.
	* tree-pretty-print.c (dump_omp_clause): Likewise.
	* tree-nested.c (convert_nonlocal_omp_clauses,
	convert_local_omp_clauses): Likewise.
	* gimplify.c (enum gimplify_omp_var_data): Use hexadecimal constants
	instead of decimal.  Add GOVD_LASTPRIVATE_CONDITIONAL.
	(gimplify_scan_omp_clauses): Don't reject lastprivate conditional
	on OMP_FOR.
	(gimplify_omp_for): Warn and disable conditional modifier from
	lastprivate on loop iterators.
	* omp-general.h (struct omp_for_data): Add lastprivate_conditional
	member.
	* omp-general.c (omp_extract_for_data): Initialize it.
	* omp-low.c (struct omp_context): Add lastprivate_conditional_map
	member.
	(delete_omp_context): Delete it.
	(lower_lastprivate_conditional_clauses): New function.
	(lower_lastprivate_clauses): Add BODY_P and CSTMT_LIST arguments,
	handle lastprivate conditional clauses.
	(lower_reduction_clauses): Add CLIST argument, emit it into
	the critical section if any.
	(lower_omp_sections): Adjust lower_lastprivate_clauses and
	lower_reduction_clauses callers.
	(lower_omp_for_lastprivate): Add CLIST argument, pass it through
	to lower_lastprivate_clauses.
	(lower_omp_for): Call lower_lastprivate_conditional_clauses, adjust
	lower_omp_for_lastprivate and lower_reduction_clauses callers, emit
	clist into a critical section if not emitted there already by
	lower_reduction_clauses.
	(lower_omp_taskreg, lower_omp_teams): Adjust lower_reduction_clauses
	callers.
	(lower_omp_1): Handle GIMPLE_ASSIGNs storing into lastprivate
	conditional variables.
	* omp-expand.c (determine_parallel_type): Punt if OMP_CLAUSE__CONDTEMP_
	clause is present.
	(expand_omp_for_generic, expand_omp_for_static_nochunk,
	expand_omp_for_static_chunk): Handle lastprivate conditional.
	(expand_omp_for): Handle fd.lastprivate_conditional like
	fd.have_reductemp.
gcc/testsuite/
	* c-c++-common/gomp/lastprivate-conditional-2.c (foo): Don't expect
	sorry for omp for.
	* c-c++-common/gomp/lastprivate-conditional-3.c: New test.
libgomp/
	* testsuite/libgomp.c-c++-common/lastprivate-conditional-1.c: New test.
	* testsuite/libgomp.c-c++-common/lastprivate-conditional-2.c: New test.

From-SVN: r271610

	* include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
	* testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
	to "run".

From-SVN: r271606

2019-05-24  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-run.c (main): Set a non-zero return value if the
	kernel does not exit cleanly.
	* config/gcn/gcn.md (gcn_return): Insert s_waitcnt before s_dcache_wb.

From-SVN: r271605

This reverts commit ac0f04360cc04e5b80a7d74f7edc47e395d2e744.

From-SVN: r271604

	* testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
	* testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.

From-SVN: r271603

	* Makefile.am (BUILDTESTS): Remove test_elf, add test_elf_32 and
	test_elf_64.
	* Makefile.in: Regenerate.

From-SVN: r271602

2019-05-24  Richard Biener  <rguenther@suse.de>

	PR testsuite/90607
	* tree-loop-distribution.c (struct partition): Add location
	member.
	(partition_alloc): Initialize all fields.
	(generate_memset_builtin): Use the location recorded in the
	partition for the generated call.
	(generate_memcpy_builtin): Likewise.
	(classify_partition): Record the location of a single store
	as location for the partition.

	* gcc.dg/pr53265.c: Amend for new expected diagnostic.

From-SVN: r271601

2019-05-24  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn.c (gcn_expand_prologue): Use gen_addsi3_scalar_carry
	for lo-part.

From-SVN: r271600

Commit r271514 missed changing the type of two functions in
aarch64-protos.h.  The function definitions had been updated to use
uint64_t while the function declarations had been missed.
They were missed since I only tested the patch on aarch64 where
`unsigned long` is the same as `uint64_t`.

This patch updates these declarations in aarch64-protos.h.

Tested by building an aarch64 cross-compiler on arm-none-linux-gnu (so
that `unsigned long` and `uint64_t` are different and would give error
messages), and bootstrapping on aarch64-none-linux-gnu.
Also manually tested command line options to see that
-march=armv8-a+typo prints out the expected flags while using the new
feature flags does not complain about missing flags.

gcc/ChangeLog:

2019-05-24  Matthew Malcomson  <matthew.malcomson@arm.com>

	PR target/90588
	* common/config/aarch64/aarch64-common.c
	(aarch64_rewrite_selected_cpu): Change local temporary variable
	type from unsigned long to uint64_t.
	* config/aarch64/aarch64-protos.h (aarch64_parse_extension,
	aarch64_get_extension_string_for_isa_flags): Change declaration to
	match new definition by replacing unsigned long with uint64_t.

From-SVN: r271599

	PR tree-optimization/90106
	PR testsuite/90517
	* gcc.dg/cdce1.c: Don't scan-assembler, instead -fdump-tree-optimized
	and scan-tree-dump for tail call.
	* gcc.dg/cdce2.c: Likewise.

From-SVN: r271598

	PR libgomp/90585
	* plugin/plugin-hsa.c: Include gstdint.h.  Include inttypes.h only if
	HAVE_INTTYPES_H is defined.
	(print_uint64_t): New typedef.
	(PRIu64): Define if HAVE_INTTYPES_H is not defined.
	(print_kernel_dispatch, run_kernel): Use PRIu64 macro instead of
	"lu", cast uint64_t HSA_DEBUG and fprintf arguments to print_uint64_t.
	(release_kernel_dispatch): Likewise.  Cast shadow->debug to uintptr_t
	before casting to void *.
	* plugin/plugin-nvptx.c: Include gstdint.h instead of stdint.h.
	* oacc-mem.c: Don't include config.h nor stdint.h.
	* target.c: Don't include config.h.
	* oacc-cuda.c: Likewise.
	* oacc-host.c: Don't include stdint.h.

From-SVN: r271597

	PR target/90568
	* config/i386/x86-tune-sched.c (ix86_macro_funsion_pair_p): Call
	gen_attr_type just once instead of 4-7 times.  Formatting fixes.
	Handle stack_protect_test_<mode> codegen similarly to corresponding
	sub instruction.

From-SVN: r271596

2019-05-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88440
	* opts.c (default_options_table): Enable -ftree-loop-distribute-patterns
	at -O[2s]+.
	* tree-loop-distribution.c (generate_memset_builtin): Fold the
	generated call.
	(generate_memcpy_builtin): Likewise.
	(distribute_loop): Pass in whether to only distribute patterns.
	(prepare_perfect_loop_nest): Also allow size optimization.
	(pass_loop_distribution::execute): When optimizing a loop
	nest for size allow pattern replacement.

	* gcc.dg/tree-ssa/ldist-37.c: New testcase.
	* gcc.dg/tree-ssa/ldist-38.c: Likewise.
	* gcc.dg/vect/vect.exp: Add -fno-tree-loop-distribute-patterns.
	* gcc.dg/tree-ssa/ldist-37.c: Adjust.
	* gcc.dg/tree-ssa/ldist-38.c: Likewise.
	* g++.dg/tree-ssa/pr78847.C: Likewise.
	* gcc.dg/autopar/pr39500-1.c: Likewise.
	* gcc.dg/autopar/reduc-1char.c: Likewise.
	* gcc.dg/autopar/reduc-7.c: Likewise.
	* gcc.dg/tree-ssa/ivopts-lt-2.c: Likewise.
	* gcc.dg/tree-ssa/ivopts-lt.c: Likewise.
	* gcc.dg/tree-ssa/predcom-dse-1.c: Likewise.
	* gcc.dg/tree-ssa/predcom-dse-2.c: Likewise.
	* gcc.dg/tree-ssa/predcom-dse-3.c: Likewise.
	* gcc.dg/tree-ssa/predcom-dse-4.c: Likewise.
	* gcc.dg/tree-ssa/prefetch-7.c: Likewise.
	* gcc.dg/tree-ssa/prefetch-8.c: Likewise.
	* gcc.dg/tree-ssa/prefetch-9.c: Likewise.
	* gcc.dg/tree-ssa/scev-11.c: Likewise.
	* gcc.dg/vect/costmodel/i386/costmodel-vect-31.c: Likewise.
	* gcc.dg/vect/costmodel/i386/costmodel-vect-33.c: Likewise.
	* gcc.dg/vect/costmodel/x86_64/costmodel-vect-31.c: Likewise.
	* gcc.dg/vect/costmodel/x86_64/costmodel-vect-33.c: Likewise.
	* gcc.target/i386/pr30970.c: Likewise.
	* gcc.target/i386/vect-double-1.c: Likewise.
	* gcc.target/i386/vect-double-2.c: Likewise.
	* gcc.dg/tree-ssa/gen-vect-2.c: Likewise.
	* gcc.dg/tree-ssa/gen-vect-26.c: Likewise.
	* gcc.dg/tree-ssa/gen-vect-28.c: Likewise.
	* gcc.dg/tree-ssa/gen-vect-32.c: Likewise.
	* gfortran.dg/vect/vect-5.f90: Likewise.
	* gfortran.dg/vect/vect-8.f90: Likewise.

From-SVN: r271595

From-SVN: r271592

Some of the i386.exp tests fail on Darwin (and at least one passes
incorrectly on Linux) because their scan-asm match strings are too
general.  In some cases the strings also match instances in the .file
and size directives or in comment output.  This patch makes the match
strings more specific.

2019-05-24  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/i386/pconfig-1.c: Scan for the string in the generated
	code, not in comments or miscellaneous directives. Adjust expected
	count.
	* gcc.target/i386/pr18041-1.c: Likewise.
	* gcc.target/i386/pr18041-2.c: Likewise.
	* gcc.target/i386/wbinvd-1.c: Likewise.
	* gcc.target/i386/wbnoinvd-1.c: Likewise.
	* gcc.target/i386/pr66819-3.c: Specifically, check that there is no
	call to "bar".
	* gcc.target/i386/pr66819-4.c: Likewise.
	* gcc.target/i386/pr82662.c
	* gcc.target/i386/ptwrite2.c: Make the checks look for the specific
	destination register, don't try the m32 test on m64 targets.

From-SVN: r271591

A couple of the i386.exp tests fail because the label spelling used
is different between ELF and Mach-O targets. Adjusted here.

2019-05-24  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/i386/pr67985-2.c: Adjust label checks for
	Darwin.
	* gcc.target/i386/pr77881.c: Likewise.

From-SVN: r271590

A few of the i386.exp target tests cannot pass on Darwin
because either the port doesn't support a feature, or the
ABI demands sufficiently different codegen that matching
the output with scan-asms would require a different test.

Disabling those tests here.

2019-05-24  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/i386/falign-functions-2.c: Skip for Darwin.
	* gcc.target/i386/pr70738-7.c: Likewise.
	* gcc.target/i386/pr24414.c: Likewise.

From-SVN: r271589

From-SVN: r271588

One of the static assertions in 20_util/function_objects/invoke/1.cc was
wrong, but didn't fail because by default it was compiled with
-std=gnu++14 which didn't use that static assertion. Split out the C++17
parts to a new file that always runs with -std=gnu++17, so those checks
are always done.

The 23_containers/unordered_set/allocator/ext_ptr.cc test is supposed to
be a run-time test but was unintentionally compile-only.

	* testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
	tests to ...
	* testsuite/20_util/function_objects/invoke/3.cc: New test.
	* testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
	"compile" test to "run".

From-SVN: r271584

	* doc/xml/manual/intro.xml: Document LWG DR 2996 change.
	* doc/html/*: Regenerate.
	* include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
	rvalue aliasing constructor.
	(static_pointer_cast, const_pointer, dynamic_pointer_cast)
	(reinterpret_pointer_cast): Add overloads taking rvalues.
	* include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
	Add rvalue aliasing constructor.
	* testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
	"run" and check return values as well as types.
	* testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
	* testsuite/20_util/shared_ptr/casts/rval.cc: New test.
	* testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
	* testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
	values.

From-SVN: r271583

	* doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
	* doc/xml/manual/intro.xml: Likewise.
	* include/std/future (__create_task_state): Add default arguments
	to make providing an allocator optional.
	(packaged_task::packaged_task(F&&)): Call __create_task_state directly
	instead of delegating to another constructor.
	(packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
	define allocator-extended constructors for C++17 and later.
	* testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
	C++11 and C++14.
	* testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
	* testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
	* testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.

From-SVN: r271582

This can't work without special support because placing
the call directly after the function label breaks the
ABI requirement that call sites are 16byte aligned.

gcc/

2019-05-23  Iain Sandoe  <iain@sandoe.co.uk>

       * config/i386/darwin.h: Reject -mfentry*.
       * doc/sourcebuild.texi: Document mfentry target support.

gcc/testsuite/

2019-05-23  Iain Sandoe  <iain@sandoe.co.uk>

       * lib/target-supports.exp (check_effective_target_mfentry): New.
       * gcc.target/i386/fentry-override.c: Require effective target mfentry.
       * gcc/testsuite/gcc.target/i386/fentry.c: Likewise
       * gcc.target/i386/fentryname1.c: Likewise
       * gcc.target/i386/fentryname2.c: Likewise
       * gcc.target/i386/fentryname3.c: Likewise
       * gcc.target/i386/nop-mcount.c: Likewise
       * gcc.target/i386/pr82699-2.c: Likewise
       * gcc.target/i386/pr82699-4.c: Likewise
       * gcc.target/i386/pr82699-5.c: Likewise
       * gcc.target/i386/pr82699-6.c: Likewise
       * gcc.target/i386/returninst1.c: Likewise
       * gcc.target/i386/returninst2.c: Likewise
       * gcc.target/i386/returninst3.c : Likewise

From-SVN: r271580

rs6000.c (rs6000_global_entry_point_needed_p): Rename to rs6000_global_entry_point_prologue_needed_p.

[gcc]

2019-05-22  Bill Schmidt  <wschmidt@linux.ibm.com>

	* config/rs6000/rs6000.c (rs6000_global_entry_point_needed_p):
	Rename to rs6000_global_entry_point_prologue_needed_p.  Return
	false for PC-relative functions.
	(rs6000_output_function_prologue): Change called function name to
	rs6000_global_entry_point_prologue_needed_p.  Emit ".localentry
	name,1" for PC-relative functions.
	(rs6000_elf_declare_function_name): Change called function name to
	rs6000_global_entry_point_prologue_needed_p.

[gcc/testsuite]

2019-05-22  Bill Schmidt  <wschmidt@linux.ibm.com>

	* gcc.target/powerpc/localentry-1.c: New file.

From-SVN: r271577

	PR target/90552
	* config/i386/i386.c (gen_rtx_cost):
	Use ix86_tune_cost instead of ix86_cost.

testsuite/ChangeLog:

	PR target/90552
	* gcc.target/i386/pr90552.c: New test.

From-SVN: r271576

2019-05-22  Bill Schmidt  <wschmidt@linux.ibm.com>
	    Michael Meissner  <meissner@linux.ibm.com>
	    Segher Boessenkool  <segher@kernel.crashing.org>

	* config/rs6000/rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Add
	OPTION_MASK_PCREL.
	(POWERPC_MASKS): Add OPTION_MASK_PCREL.
	* config/rs6000/rs6000-protos.h (rs6000_pcrel_p): New prototype.
	(rs6000_fndecl_pcrel_p): Likewise.
	* config/rs6000/rs6000.c (rs6000_option_override_internal): Report
	error if -mpcrel is requested without -mcpu=future.
	(rs6000_opt_masks): Add entry for pcrel.
	(rs6000_fndecl_pcrel_p): New function.
	(rs6000_pcrel_p): Likewise.
	* config/rs6000/rs6000.opt (mpcrel): New option.
	* doc/invoke.texi: Document -mpcrel and -mno-pcrel.


Co-Authored-By: Michael Meissner <meissner@linux.ibm.com>
Co-Authored-By: Segher Boessenkool <segher@kernel.crashing.org>

From-SVN: r271575