2017-09-27  Richard Biener  <rguenther@suse.de>

	* graphite-scop-detection.c (find_scop_parameters): Move
	loop bound handling ...
	(gather_bbs::before_dom_children): ... here, avoiding the need
	to build scop_info->loop_nest.
	(record_loop_in_sese): Remove.
	* sese.h (sese_info_t::loop_nest): Remove.
	* sese.c (new_sese_info): Do not allocate loop_nest.
	(free_sese_info): Do not free loop_nest.

From-SVN: r253232

    
    Reviewed-on: https://go-review.googlesource.com/64550

From-SVN: r253231

	PR c++/82159
	* gimplify.c (gimplify_modify_expr): Don't optimize away zero sized
	lhs from calls if the lhs has addressable type.

	* g++.dg/opt/pr82159.C: New test.

From-SVN: r253230

2017-09-27  Richard Biener  <rguenther@suse.de>

	* graphite.h (scop::max_alias_set): New member.
	* graphite-scop-detection.c: Remove references to non-existing
	--param in comments.
	(build_alias_sets): Record the maximum alias set used for drs.
	(build_scops): Support zero as unlimited for
	--param graphite-max-arrays-per-scop.
	* graphite-sese-to-poly.c (add_scalar_version_numbers): Remove
	and inline into ...
	(build_poly_sr_1): ... here.  Compute alias set based on the
	maximum alias set used for drs rather than
	PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP

From-SVN: r253229

2017-09-27  Tom de Vries  <tom@codesourcery.com>

	* testsuite/libgomp.oacc-c-c++-common/parallel-reduction.c (main):
	Remove acc_device_nvidia references.

From-SVN: r253228

graphite-optimize-isl.c (get_schedule_for_node_st): Allow --param loop-block-tile-size=0 to disable tiling.

2017-09-27  Richard Biener  <rguenther@suse.de>

	* graphite-optimize-isl.c (get_schedule_for_node_st): Allow
	--param loop-block-tile-size=0 to disable tiling.

From-SVN: r253227

2017-09-27  Richard Biener  <rguenther@suse.de>

	* doc/invoke.texi (graphite-max-bbs-per-function): Remove.
	(graphite-max-nb-scop-params): Document special value zero.
	* domwalk.h (dom_walker::STOP): New symbolical constant.
	(dom_walker::dom_walker): Add optional parameter for bb to
	RPO mapping.
	(dom_walker::~dom_walker): Declare.
	(dom_walker::before_dom_children): Document STOP return value.
	(dom_walker::m_user_bb_to_rpo): New member.
	(dom_walker::m_bb_to_rpo): Likewise.
	* domwalk.c (dom_walker::dom_walker): Compute bb to RPO
	mapping here if not provided by the user.
	(dom_walker::~dom_walker): Free bb to RPO mapping if not
	provided by the user.
	(dom_walker::STOP): Define.
	(dom_walker::walk): Do not compute bb to RPO mapping here.
	Support STOP return value from before_dom_children to stop
	walking.
	* graphite-optimize-isl.c (optimize_isl): If the schedule
	is the same still generate code if -fgraphite-identity
	or -floop-parallelize-all are given.
	* graphite-scop-detection.c: Include cfganal.h.
	(gather_bbs::gather_bbs): Get and pass through bb to RPO
	mapping.
	(gather_bbs::before_dom_children): Return STOP for BBs
	not in the region.
	(build_scops): Compute bb to RPO mapping and pass it to
	the domwalk.  Treat --param graphite-max-nb-scop-params=0
	as not limiting the number of params.
	* graphite.c (graphite_initialize): Remove limit on the
	number of basic-blocks in a function.
	* params.def (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION): Remove.
	(PARAM_GRAPHITE_MAX_NB_SCOP_PARAMS): Adjust to documented
	default value of 10.

From-SVN: r253226

	gcc/fortran/
	* lang.opt <Wdo-subscript>: End help text with a period.

From-SVN: r253225

Fails on S/390 with char defaulting to unsigned char.

gcc/testsuite/ChangeLog:

2017-09-27  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.dg/vect/pr65947-9.c: Use signed char explicitly.

From-SVN: r253224

vsx.md (peephole for optimizing move SF to GPR): Adjust code to eliminate needing to do the shift right 32-bits operation after...

[gcc]
2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/vsx.md (peephole for optimizing move SF to GPR):
	Adjust code to eliminate needing to do the shift right 32-bits
	operation after XSCVDPSPN.

[gcc/testsuite]
2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/pr71977-1.c: Update test to know that we
	don't generate a 32-bit shift after doing XSCVDPSPN.
	* gcc.target/powerpc/direct-move-float1.c: Likewise.
	* gcc.target/powerpc/direct-move-float3.c: New test.

From-SVN: r253223

From-SVN: r253222

2017-09-26  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	* match.pd ((X / Y) == 0 -> X < Y): New pattern.
	((X / Y) != 0 -> X >= Y): Likewise.

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

From-SVN: r253218

rs6000-c.c (P9V_BUILTIN_VEC_XL_LEN_R, [...]): Add support for builtins vector unsigned char vec_xl_len_r (unsigned char *...

gcc/ChangeLog:

2017-09-26  Carl Love  <cel@us.ibm.com>

	* config/rs6000/rs6000-c.c (P9V_BUILTIN_VEC_XL_LEN_R,
	P9V_BUILTIN_VEC_XST_LEN_R): Add support for builtins
	vector unsigned char vec_xl_len_r (unsigned char *, size_t);
	void vec_xst_len_r (vector unsigned char, unsigned char *, size_t);
	* config/rs6000/altivec.h (vec_xl_len_r, vec_xst_len_r): Add defines.
	* config/rs6000/rs6000-builtin.def (XL_LEN_R, XST_LEN_R): Add
	definitions and overloading.
	* config/rs6000/rs6000.c (altivec_expand_builtin): Add case
	statement for P9V_BUILTIN_XST_LEN_R.
	(altivec_init_builtins): Add def_builtin for P9V_BUILTIN_STXVLL.
	* config/rs6000/vsx.md (lxvll, stxvll, xl_len_r, xst_len_r): Add
	define_expand and define_insn for the instructions and builtins.
	* doc/extend.texi: Update the built-in documentation file for the new
	built-in functions.
	* config/rs6000/altivec.md (altivec_lvsl_reg, altivec_lvsr_reg): Add
	define_insn for the instructions

gcc/testsuite/ChangeLog:

2017-09-26  Carl Love  <cel@us.ibm.com>

	* gcc.target/powerpc/builtins-5-p9-runnable.c: Add new runable test
	file for the new built-ins and the existing built-ins.

From-SVN: r253217

2017-09-26  Krister Walfridsson  <krister.walfridsson@gmail.com>

	PR target/39570
	* gcc/config/netbsd-protos.h: New file.
	* gcc/config/netbsd.c: New file.
	* gcc/config/netbsd.h (SUBTARGET_INIT_BUILTINS): Define.
	* gcc/config/t-netbsd: New file.
	* gcc/config.gcc (tm_p_file): Add netbsd-protos.h.
	(tmake_file) Add t-netbsd.
	(extra_objs) Add netbsd.o.

From-SVN: r253216

From-SVN: r253215

2017-09-26  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/82143
	PR fortran/82324
	* doc/sourcebuild.texi: Document fortran_real_10 and fortran_real_16.

2017-09-26  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/82143
	PR fortran/82324
	* lib/target-supports.exp (check_effective_target_fortran_real_10): New.
	* gfortran.dg/promotion_3.f90: Only run if real(16) is available.
	* gfortran.dg/promotion_4.f90: Only run if real(10) is available.
	Don't assume that DOUBLE PRECISION has kind=16.

From-SVN: r253214

2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/vsx.md (vsx_xscvdpspn): Eliminate useless
	alternative constraint.
	(vsx_xscvspdpn): Likewise.
	(vsx_xscvspdpn_scalar): Likewise.

From-SVN: r253213

2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/vsx.md (vsx_xscvspdp_scalar2): Move insn so that
	it is adjacent to the other XSCVSPDP insns.

From-SVN: r253212

2017-09-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* frontend-passes.c (do_subscript): Don't do anything
	if inside an associate list.

2017-09-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* gfortran.dg/gomp/associate1.f90: Remove unnecessary
	warning from associate construct and do loop.

From-SVN: r253211

2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.md (movsi_from_df): Optimize converting a
	DFmode to a SFmode, and then needing to move the SFmode to a GPR
	to use the XSCVDPSP instruction instead of FRSP and XSCVDPSPN.

From-SVN: r253210

rs6000.md (movsi_from_sf): Adjust code to eliminate doing a 32-bit shift right or vector extract after...

2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.md (movsi_from_sf): Adjust code to
	eliminate doing a 32-bit shift right or vector extract after doing
	XSCVDPSPN.  Use zero_extendsidi2 instead of p8_mfvsrd_4_disf to
	move the value to the GPRs.
	(movdi_from_sf_zero_ext): Likewise.
	(reload_gpr_from_vsxsf): Likewise.
	(p8_mfvsrd_4_disf): Delete, no longer used.

From-SVN: r253209

rs6000.md (extendsi<mode>2): Add a splitter to do sign extension from a vector register to a GPR by doing a...

2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.md (extendsi<mode>2): Add a splitter to do
	sign extension from a vector register to a GPR by doing a 32-bit
	direct move and then an EXTSW.
	(extendsi<mode>2 splitter): Likewise.

From-SVN: r253208

2017-09-26  Martin Jambor  <mjambor@suse.cz>

	* tree-sra.c (compare_access_positions): Put integral types first,
	stabilize sorting of integral types, remove conditions putting
	non-full-precision integers last.
	(sort_and_splice_var_accesses): Disable scalarization if a
	non-integert would be represented by a non-full-precision integer.

From-SVN: r253207

2017-09-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* gfortran.dg/gomp/associate1.f90: Really commit change
	from 2017-09-25.
	* gfortran.dg/predcom-1.f: Likewise.
	* gfortran.dg/unconstrained_commons.f: Likewise.

From-SVN: r253206

Building glibc for many different configurations and running the
compilation parts of the testsuite runs into failures of the
elf/check-execstack test for hppa and microblaze.  Those
configurations default to executable stacks in the Linux kernel
because of VM_DATA_DEFAULT_FLAGS definitions including VM_EXEC
(VM_DATA_DEFAULT_FLAGS being the default definition of
VM_STACK_DEFAULT_FLAGS).

This fails because those configurations are not generating
.note.GNU-stack sections to indicate that programs do not need an
executable stack.  This patch fixes GCC to generate those sections on
those architectures (when configured for a target using the Linux
kernel), as it does on other architectures, together with adding that
section to libgcc .S sources, with the same code as used on other
architectures (or a variant using "#ifdef __linux__" instead of the
usual "#if defined(__ELF__) && defined(__linux__)" for microblaze, as
that configuration doesn't use elfos.h and so doesn't define __ELF__).

This suffices to eliminate that glibc test failure.  (For hppa, the
compilation parts of the glibc testsuite still fail because of the
separate elf/check-textrel failure.)

gcc:
	* config/microblaze/linux.h (TARGET_ASM_FILE_END): Likewise.
	* config/pa/pa.h (NEED_INDICATE_EXEC_STACK): Likewise.
	* config/pa/pa-linux.h (NEED_INDICATE_EXEC_STACK): Likewise.
	* config/pa/pa.c (pa_hpux_file_end): Rename to pa_file_end.
	Define unconditionally, with [ASM_OUTPUT_EXTERNAL_REAL]
	conditionals inside the function instead of around it.  Call
	file_end_indicate_exec_stack if NEED_INDICATE_EXEC_STACK.
	(TARGET_ASM_FILE_END): Define unconditionally to pa_file_end.

libgcc:
	* config/microblaze/crti.S, config/microblaze/crtn.S,
	config/microblaze/divsi3.S, config/microblaze/moddi3.S,
	config/microblaze/modsi3.S, config/microblaze/muldi3_hard.S,
	config/microblaze/mulsi3.S,
	config/microblaze/stack_overflow_exit.S,
	config/microblaze/udivsi3.S, config/microblaze/umodsi3.S,
	config/pa/milli64.S: Add .note.GNU-stack section.

From-SVN: r253204

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

	* graphite-scop-detection.c (scop_detection::build_scop_depth): Rewrite,
	fold in ...
	(scop_detection::build_scop_breadth): ... this.  Removed.
	(scop_detection::loop_is_valid_in_scop): Fold into single caller.
	(scop_detection::harmful_stmt_in_bb): Likewise.
	(scop_detection::graphite_can_represent_stmt): Likewise.
	(scop_detection::loop_body_is_valid_scop): Likewise.  Remove recursion.
	(scop_detection::can_represent_loop): Remove recursion, fold in ...
	(scop_detection::can_represent_loop_1): ... this.  Removed.
	(scop_detection::harmful_loop_in_region): Simplify after inlining
	the above and remove more quadraticness.
	(build_scops): Adjust.
	* tree-data-ref.c (loop_nest_has_data_refs): Remove pointless
	quadraticness.

From-SVN: r253203

re PR target/82267 (x32: unnecessary address-size prefixes.  Why isn't -maddress-mode=long the default?)

	PR target/82267
	* config/i386/i386.c (ix86_print_operand_address_as): Only test
	REGNO (base) == SP_REG if base is a REG.

From-SVN: r253202

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
	* tree-ssa-reassoc.c (update_range_test): Dump r->exp each time
	if it is different SSA_NAME.
	(optimize_range_tests_cmp_bitwise): New function.
	(optimize_range_tests): Call it.

	* gcc.dg/pr35691-5.c: New test.
	* gcc.dg/pr35691-6.c: New test.

From-SVN: r253201

From-SVN: r253200

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

	PR tree-optimization/82321
	* graphite.c (canonicalize_loop_closed_ssa): Properly check
	for the def being inside the loop.

	* gcc.dg/graphite/pr82321.c: New testcase.

From-SVN: r253199

gcc/ChangeLog:

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

	* config/s390/vx-builtins.md ("vmslg"): Add missing operand in
	assembler output.
	* config/s390/s390-builtins.def: Fix constraint on op4.

From-SVN: r253198

V2DF mode was still hard-coded here.

gcc/ChangeLog:

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

	* config/s390/s390.c (s390_expand_vec_compare): Use the new mode
	independent expanders.
	* config/s390/vector.md ("vec_cmpuneq", "vec_cmpltgt")
	("vec_ordered", "vec_unordered"): New expanders.

From-SVN: r253197

gcc/ChangeLog:

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

	* config/s390/s390.c (s390_preferred_simd_mode): Return V4SFmode
	for SFmode.

From-SVN: r253196

gcc/ChangeLog:

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

	* config/s390/vector.md ("vec_unpacks_low_v16qi"): Rename to
	vec_unpacks_lo_v16qi.
	("vec_unpacku_low_v16qi"): Rename to vec_unpacku_lo_v16qi.

From-SVN: r253195

gcc/ChangeLog:

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

	* config/s390/vector.md ("vec_unpacks_lo_v4sf")
	("vec_unpacks_hi_v4sf", "vec_unpacks_lo_v2df")
	("vec_unpacks_hi_v2df", "vec_pack_trunc_v2df"): New expanders.

From-SVN: r253194

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

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

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

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

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