gcc/
	* config.gcc (nds32*-*-*): Check that n6/n8/s8 are valid to --with-cpu.
	* config/nds32/nds32-n8.md: New file.
	* config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N6 and CPU_N8.
	* config/nds32/nds32-pipelines-auxiliary.c: Implementation for n8
	pipeline.
	* config/nds32/nds32-protos.h: More declarations for n8 pipeline.
	* config/nds32/nds32-utils.c: More implementations for n8 pipeline.
	* config/nds32/nds32.md (pipeline_model): Add n8.
	* config/nds32/nds32.opt (mcpu): Support n8 pipeline cpus.
	* config/nds32/pipelines.md: Include n8 settings.

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

From-SVN: r259219

gcc/
	* config.gcc (nds32*): Add nds32-utils.o into extra_objs.
	* config/nds32/nds32-n9-2r1w.md: New file.
	* config/nds32/nds32-n9-3r2w.md: New file.
	* config/nds32/nds32-opts.h (nds32_cpu_type, nds32_mul_type,
	nds32_register_ports): New or modify for cpu n9.
	* config/nds32/nds32-pipelines-auxiliary.c: Implementation for n9
	pipeline.
	* config/nds32/nds32-protos.h: More declarations for n9 pipeline.
	* config/nds32/nds32-utils.c: New file.
	* config/nds32/nds32.h (TARGET_PIPELINE_N9, TARGET_PIPELINE_SIMPLE,
	TARGET_MUL_SLOW): Define.
	* config/nds32/nds32.md (pipeline_model): New attribute.
	* config/nds32/nds32.opt (mcpu, mconfig-mul, mconfig-register-ports):
	New options that support cpu n9.
	* config/nds32/pipelines.md: Include n9 settings.
	* config/nds32/t-nds32 (nds32-utils.o): Add dependency.

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

From-SVN: r259218

gcc/
	* config/nds32/nds32-md-auxiliary.c (output_cond_branch): Output align
	information if necessary.
	(output_cond_branch_compare_zero): Likewise.
	* config/nds32/nds32.c (nds32_adjust_insn_length): Consider align case.
	(nds32_target_alignment): Refine for alignment.
	* config/nds32/nds32.h (NDS32_ALIGN_P): Define.
	(FUNCTION_BOUNDARY): Modify.
	* config/nds32/nds32.md (call_internal, call_value_internal): Consider
	align case.
	* config/nds32/nds32.opt (malways-align, malign-functions): New.

From-SVN: r259217

gcc/
	* config/nds32/constants.md (unspec_volatile_element): Add values for
	TLB operation and data prefetch.
	* config/nds32/nds32-intrinsic.c: Implementation of intrinsic
	functions for TLB operation and data prefetch.
	* config/nds32/nds32-intrinsic.md: Likewise.
	* config/nds32/nds32_intrinsic.h: Likewise.
	* config/nds32/nds32.c (nds32_dpref_names): Likewise.
	(nds32_print_operand): Likewise.
	* config/nds32/nds32.h (nds32_builtins): Likewise.

From-SVN: r259216

From-SVN: r259215

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
	Andrew Pinski <pinsika@gcc.gnu.org>

	PR middle-end/82976
	* match.pd: Use constant_boolean_node of correct type instead of
	boolean_true_node or boolean_false_node for simplifying
	pointer comparisons to zero.

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR middle-end/82976
	* gfortran.dg/realloc_on_assign_16a.f90: New test.


Co-Authored-By: Andrew Pinski <pinskia@gcc.gnu.org>

From-SVN: r259212

	PR tree-optimization/80021
	* tree.c (verify_type_variant): Make error call in verify_variant_match
	translatable and remove final full stop.

From-SVN: r259211

gcc/
	* config/nds32/constants.md (unspec_volatile_element): Add
	UNSPEC_VOLATILE_EH_RETURN.
	* config/nds32/nds32-md-auxiliary.c (nds32_output_stack_push,
	nds32_output_stack_pop): Support dwarf exception handling process.
	* config/nds32/nds32-protos.h (nds32_dynamic_chain_address): Declare.
	* config/nds32/nds32.c (nds32_init_machine_status): Support dwarf
	exception handling process.
	(nds32_compute_stack_frame): Likewise.
	(nds32_return_addr_rtx): Likewise.
	(nds32_initial_elimination_offset): Likewise.
	(nds32_expand_prologue): Likewise.
	(nds32_expand_epilogue): Likewise.
	(nds32_dynamic_chain_address): New function.
	* config/nds32/nds32.h (machine_function): Add fields for dwarf
	exception handling.
	(DYNAMIC_CHAIN_ADDRESS): Define.
	(EH_RETURN_DATA_REGNO): Define.
	(EH_RETURN_STACKADJ_RTX): Define.
	* config/nds32/nds32.md (eh_return, nds32_eh_return): Implement
	patterns for dwarf exception handling.

From-SVN: r259210

gcc/
	* config/nds32/nds32.h: Clean up obsolete macros.

From-SVN: r259209

gcc/
	* config/nds32/constants.md (unspec_element, unspec_volatile_element):
	Add enum values for particular instructions.
	* config/nds32/nds32-intrinsic.c: Implementation of expanding
	particular intrinsic functions.
	* config/nds32/nds32-intrinsic.md: Likewise.
	* config/nds32/nds32_intrinsic.h: Likewise.
	* config/nds32/nds32.h (nds32_builtins): Likewise.
	* config/nds32/nds32.md (type): Add pbsad and pbsada.
	(btst, ave): New patterns for particular instructions.

From-SVN: r259208

gcc/
	* config/nds32/constants.md (unspec_element, unspec_volatile_element):
	Add enum values for atomic load/store and memory sync.
	* config/nds32/nds32-intrinsic.c: Implementation for atomic load/store
	and memory sync.
	* config/nds32/nds32-intrinsic.md: Likewise.
	* config/nds32/nds32_intrinsic.h: Likewise.
	* config/nds32/nds32.h (nds32_builtins): Likewise.

From-SVN: r259207

	PR tree-optimization/85257
	* fold-const.c (native_encode_vector): If not all elts could fit
	and off is -1, return 0 rather than offset.
	* tree-ssa-sccvn.c (vn_reference_lookup_3): Pass
	(offseti - offset2) / BITS_PER_UNIT as 4th argument to
	native_encode_expr.  Verify len * BITS_PER_UNIT >= maxsizei.  Don't
	adjust buffer in native_interpret_expr call.

	* gcc.dg/pr85257.c: New test.

From-SVN: r259206

gcc/
	* config/nds32/constants.md (unspec_volatile_element): Add cache
	control enum values.
	* config/nds32/nds32-intrinsic.c: Add cache control expand functions.
	* config/nds32/nds32-intrinsic.md: Add cache control patterns.
	* config/nds32/nds32.c (nds32_cctl_names): New.
	(nds32_print_operand): Handle cache control register names.
	* config/nds32/nds32.h (nds32_builtins): New enum values.
	* config/nds32/nds32_intrinsic.h: Add cache control enum types and
	macros.
	* config/nds32/nds32.md (type): Add mmu.
	* config/nds32/pipelines.md (simple_insn): Add mmu.

From-SVN: r259205

gcc/
	* config/nds32/nds32.md (type): Remove call.
	* config/nds32/pipelines.md (simple_insn): Likewise.

From-SVN: r259204

gcc/
	* config/nds32/constants.md (unspec_volatile_element): Add
	UNSPEC_VOLATILE_FMFCSR, UNSPEC_VOLATILE_FMTCSR and
	UNSPEC_VOLATILE_FMFCFG.
	* config/nds32/nds32-intrinsic.c (bdesc_noarg): New builtin
	description for fmfcfg and fmfcsr.
	(bdesc_1arg): Add fmtcsr.
	(bdesc_2arg): Add fcpynss, fcpyss, fcpynsd and fcpysd.
	(nds32_expand_builtin_impl): Deal with FPU intrinsic functions.
	* config/nds32/nds32-intrinsic.md (unspec_fcpynsd, unspec_fcpysd,
	unspec_fcpynss, unspec_fcpysd, unspec_fcpyss, unspec_fmfcsr,
	unspec_fmfcfg): New patterns.
	* config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_FMFCFG,
	NDS32_BUILTIN_FMFCSR, NDS32_BUILTIN_FMTCSR, NDS32_BUILTIN_FCPYNSS,
	NDS32_BUILTIN_FCPYSS,NDS32_BUILTIN_FCPYNSD and NDS32_BUILTIN_FCPYSD.
	* config/nds32/nds32_intrinsic.h (__nds32__fcpynsd, __nds32__fcpynss,
	__nds32__fcpysd, __nds32__fcpyss, __nds32__fmfcsr, __nds32__fmtcsr,
	__nds32__fmfcfg): Define.

From-SVN: r259203

gcc/
	* config/nds32/nds32.c (nds32_intrinsic_register_names): Add more
	intrinsic register names.
	* config/nds32/nds32_intrinsic.h (nds32_intrinsic_registers): Add more
	intrinsic register enum values and macros.

From-SVN: r259202

gcc/
	* config/nds32/nds32.c (nds32_legitimate_index_p): Modify condition
	for load/store addressing form.
	(nds32_print_operand_address): Likewise.

From-SVN: r259201

From-SVN: r259200

	PR target/85196
	* config/sparc/sparc.c (sparc_expand_move): Deal with symbolic operands
	based on LABEL_REF.  Remove useless assertion.
	(pic_address_needs_scratch): Fix formatting.
	(sparc_legitimize_pic_address): Minor tweaks.
	(sparc_delegitimize_address): Adjust assertion accordingly.
	* config/sparc/sparc.md (movsi_pic_label_ref): Change label_ref_operand
	into symbolic_operand.
	(movsi_high_pic_label_ref): Likewise.
	(movsi_lo_sum_pic_label_ref): Likewise.
	(movdi_pic_label_ref): Likewise.
	(movdi_high_pic_label_ref): Likewise.
	(movdi_lo_sum_pic_label_ref): Likewise.

From-SVN: r259194

From-SVN: r259193

2018-04-06  Amaan Cheval  <amaan.cheval@gmail.com>

	* config.gcc (x86_64-*-rtems*): Add rtems.h to tm_file for
	custom LIB_SPEC setup.

From-SVN: r259192

	gcc/
	* config.gcc (riscv*-*-freebsd*): Add RISC-V FreeBSD support.
	* config/riscv/freebsd.h: New.
	libgcc/
	* config.host (riscv*-*-freebsd*): Add RISC-V FreeBSD support.

From-SVN: r259190

2018-04-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR libfortran/85253
	* m4/matmul_internal.m4: If ycount == 1, add one more row to
	the internal buffer.
	* generated/matmul_c10.c: Regenerated.
	* generated/matmul_c16.c: Regenerated.
	* generated/matmul_c4.c: Regenerated.
	* generated/matmul_c8.c: Regenerated.
	* generated/matmul_i1.c: Regenerated.
	* generated/matmul_i16.c: Regenerated.
	* generated/matmul_i2.c: Regenerated.
	* generated/matmul_i4.c: Regenerated.
	* generated/matmul_i8.c: Regenerated.
	* generated/matmul_r10.c: Regenerated.
	* generated/matmul_r16.c: Regenerated.
	* generated/matmul_r4.c: Regenerated.
	* generated/matmul_r8.c: Regenerated.
	* generated/matmulavx128_c10.c: Regenerated.
	* generated/matmulavx128_c16.c: Regenerated.
	* generated/matmulavx128_c4.c: Regenerated.
	* generated/matmulavx128_c8.c: Regenerated.
	* generated/matmulavx128_i1.c: Regenerated.
	* generated/matmulavx128_i16.c: Regenerated.
	* generated/matmulavx128_i2.c: Regenerated.
	* generated/matmulavx128_i4.c: Regenerated.
	* generated/matmulavx128_i8.c: Regenerated.
	* generated/matmulavx128_r10.c: Regenerated.
	* generated/matmulavx128_r16.c: Regenerated.
	* generated/matmulavx128_r4.c: Regenerated.
	* generated/matmulavx128_r8.c: Regenerated.

From-SVN: r259188

gcc/
	* config/nds32/nds32.c (nds32_adjust_insn_length): Refine.
	* config/nds32/nds32.h (ADJUST_INSN_LENGTH): Change the location in
	file.

From-SVN: r259187

gcc/
	* config/nds32/nds32-md-auxiliary.c (nds32_output_return,
	nds32_output_call, nds32_symbol_binds_local_p): New functions.
	* config/nds32/nds32-protos.h (nds32_output_call,
	nds32_output_return): Declare.
	* config/nds32/nds32.md: Refine all the call and return patterns.

Co-Authored-By: Kito Cheng <kito.cheng@gmail.com>

From-SVN: r259186

Here, since the condition for the constexpr if depends on the type of 'j',
it's still dependent when we are partially instantiating the inner lambda,
so we need to defer instantiating the constexpr if.  When we instantiated
the inner lambda, we tried to substitute into the typename, which failed
because we didn't have a declaration of 'i' available.

Fixed by teaching extract_locals_r to capture local typedefs such as 'ar';
if we have the typedef handy, we don't need to substitute into its
definition.

	* pt.c (extract_locals_r): Remember local typedefs.

From-SVN: r259185

This patch adds more suggestions as per:
  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84269#c10
some of which need C++14 and C++17, and some of which use headers that
exist in earlier standards.

For example, <memory> exists in C++98, but if the user attempts to
use std::make_shared with -std=c++98, they are suggested to include
<memory>, even if they've already included it.

This patch adds the missing names, and fixes the nonsensical suggestions
by detecting if the name isn't available yet, based on the user's
dialect, and reporting things more intelligently:

t.cc: In function 'void test_make_shared()':
t.cc:5:8: error: 'make_shared' is not a member of 'std'
   std::make_shared<int>();
        ^~~~~~~~~~~
t.cc:5:8: note: 'std::make_shared' is only available from C++11 onwards

gcc/cp/ChangeLog:
	PR c++/84269
	* name-lookup.c (struct std_name_hint): Move out of
	get_std_name_hint; add field "min_dialect".
	(get_std_name_hint): Add min_dialect values to all initializers.
	Add <any>, <atomic>, <bitset>, <condition_variable>, <functional>,
	<future>, <istream>, <iterator>, <ostream>, <mutex>, <optional>,
	<shared_mutex>, <string_view>, <thread>, and <variant>.
	Add fstream, ifstream, and ofstream to <fstream>.
	Add istringstream, ostringstream, and stringstream to <sstream>.
	Add basic_string to <string>.
	Add tuple_element and tuple_size to <tuple>.
	Add declval to <utility>.
	Fix ordering of <queue> and <tuple>.
	Return a std_name_hint, rather than a const char *.
	(get_cxx_dialect_name): New function.
	(maybe_suggest_missing_std_header): Detect names that aren't yet
	available in the current dialect, and instead of suggesting a
	missing #include, warn about the dialect.

gcc/testsuite/ChangeLog:
	PR c++/84269
	* g++.dg/lookup/missing-std-include-6.C: Move std::array and
	std::tuple here since they need C++11.
	* g++.dg/lookup/missing-std-include-8.C: New test.
	* g++.dg/lookup/missing-std-include.C: Move std::array and
	std::tuple test to missing-std-include-6.C to avoid failures
	with C++98.

From-SVN: r259184

	PR debug/85252
	* dwarf2out.c (rtl_for_decl_init): For STRING_CST initializer only
	build CONST_STRING if TYPE_MAX_VALUE is non-NULL and is INTEGER_CST.

	* gcc.dg/debug/pr85252.c: New test.

From-SVN: r259183

	PR rtl-optimization/84872
	* cfgloopmanip.c (create_preheader): Use make_forwarder_block even if
	nentry == 1 when CP_FALLTHRU_PREHEADERS and single_entry is
	EDGE_CROSSING edge.

	* gcc.dg/graphite/pr84872.c: New test.

From-SVN: r259182

	PR c++/85210
	* pt.c (tsubst_decomp_names): Return error_mark_node and assert
	errorcount is set if tsubst doesn't return a VAR_DECL.

	* g++.dg/cpp1z/decomp42.C: New test.

From-SVN: r259181

We provide fix-it hints for the most common "std" names when an explicit
"std::" prefix is present, however we don't yet provide fix-it hints for
this implicit case:

  using namespace std;
  void f() {  cout << "test"; }

for which we emit:

  t.cc: In function 'void f()':
  t.cc:2:13: error: 'cout' was not declared in this scope
  void f() {  cout << "test"; }
              ^~~~

This patch detects if a "using namespace std;" directive is present
in the current namespace, and if so, offers a suggestion for
unrecognized names that are in our list of common "std" names:

  t.cc: In function 'void f()':
  t.cc:2:13: error: 'cout' was not declared in this scope
   void f() {  cout << "test"; }
               ^~~~
  t.cc:2:13: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
  +#include <iostream>
   using namespace std;
   void f() {  cout << "test"; }
               ^~~~

gcc/cp/ChangeLog:
	PR c++/85021
	* name-lookup.c (using_directives_contain_std_p): New function.
	(has_using_namespace_std_directive_p): New function.
	(suggest_alternatives_for): Simplify if/else logic using early
	returns.  If no candidates were found, and there's a
	"using namespace std;" directive, call
	maybe_suggest_missing_std_header.
	(maybe_suggest_missing_header): Split later part of the function
	into..
	(maybe_suggest_missing_std_header): New.

gcc/testsuite/ChangeLog:
	PR c++/85021
	* g++.dg/lookup/missing-std-include-7.C: New test.

From-SVN: r259179

	* cp-tree.h (PROCESSING_REAL_TEMPLATE_DECL_P): False if
	processing_template_parmlist.

From-SVN: r259178

	* cp-gimplify.c (cp_genericize_r): Discard using of undeduced auto.

From-SVN: r259177

From-SVN: r259169

re PR tree-optimization/85244 (Bad optimisation with flexible array member (may be related to -ftree-dominator-opts))

2018-04-06  Richard Biener  <rguenther@suse.de>

	PR middle-end/85244
	* tree-dfa.c (get_ref_base_and_extent): Reset seen_variable_array_ref
	after seeing a component reference with an adjacent field.  Treat
	refs to arrays at struct end of external decls similar to
	refs to unconstrained commons.

	* gcc.dg/torture/pr85244-1.c: New testcase.
	* gcc.dg/torture/pr85244-2.c: Likewise.

From-SVN: r259168

re PR sanitizer/85213 (-fsanitize=undefined internal compiler error: in fold_convert_loc, at fold-const.c:2402)

	PR sanitizer/85213
	* fold-const.c (twoval_comparison_p): Remove SAVE_P argument and don't
	look through SAVE_EXPRs with non-side-effects argument.  Adjust
	recursive calls.
	(fold_comparison): Adjust twoval_comparison_p caller, don't handle
	save_p here.

	* c-c++-common/ubsan/pr85213.c: New test.

From-SVN: r259167

2018-04-06  Richard Biener  <rguenther@suse.de>

	PR middle-end/85180
	* alias.c (find_base_term): New wrapper around find_base_term
	unwinding CSELIB_VAL_PTR changes.
	(find_base_term): Do not restore CSELIB_VAL_PTR during the
	recursion.

	* gcc.dg/pr85180.c: New testcase.

From-SVN: r259166

gcc/testsuite/ChangeLog:

2018-04-06  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/vector/vcond-shift.c: Use the proper conditions
	to trigger the optimization. Do some cleanup and function
	renaming.  Add more test functions.

From-SVN: r259165

We still use lr r0,r0 as a NOP instruction although we have some kind
of dedicated NOP instruction (nopr) which maps to a "branch never".

As a side-effect this fixes testcases scanning for NOPs
e.g. patchable_function_entry-*.

As another side-effect this makes it difficult to distingiush NOPs
generated for hotpatching from NOPs added when using -O0 to attach
location information to it.  Hence I had to make sure that the hotpatch
testcases get skipped when compiling without optimization.

gcc/ChangeLog:

2018-04-06  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/s390.c (s390_z10_optimize_cmp): Expand dedicated NOP
	instructions.
	* config/s390/s390.md (UNSPECV_NOP_LR_0, UNSPECV_NOP_LR_1): New
	constant definitions.
	("nop"): lr 0,0 -> nopr r0
	("nop_lr0", "nop_lr1"): New insn definitions.

gcc/testsuite/ChangeLog:

2018-04-06  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/s390.exp: Remove -O0 from list of torture
	options.
	* gcc.target/s390/hotpatch-1.c: Skip when building without
	optimization.
	* gcc.target/s390/hotpatch-10.c: Likewise.
	* gcc.target/s390/hotpatch-11.c: Likewise.
	* gcc.target/s390/hotpatch-12.c: Likewise.
	* gcc.target/s390/hotpatch-13.c: Likewise.
	* gcc.target/s390/hotpatch-14.c: Likewise.
	* gcc.target/s390/hotpatch-15.c: Likewise.
	* gcc.target/s390/hotpatch-16.c: Likewise.
	* gcc.target/s390/hotpatch-17.c: Likewise.
	* gcc.target/s390/hotpatch-18.c: Likewise.
	* gcc.target/s390/hotpatch-19.c: Likewise.
	* gcc.target/s390/hotpatch-2.c: Likewise.
	* gcc.target/s390/hotpatch-3.c: Likewise.
	* gcc.target/s390/hotpatch-4.c: Likewise.
	* gcc.target/s390/hotpatch-5.c: Likewise.
	* gcc.target/s390/hotpatch-6.c: Likewise.
	* gcc.target/s390/hotpatch-7.c: Likewise.
	* gcc.target/s390/hotpatch-8.c: Likewise.
	* gcc.target/s390/hotpatch-9.c: Likewise.

From-SVN: r259164

On IBM Z we enforce function alignment to 8 bytes.  Hence we get an
error instead of a warning when trying to specify smaller alignments.

gcc/testsuite/ChangeLog:

2018-04-06  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* c-c++-common/Wattributes.c: Disable warning for s390* target and
	check for an error instead.
	* gcc.dg/Wattributes-6.c: Likewise.

From-SVN: r259163