PR c/83989
	* gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Don't
	use SSA_NAME_VAR as base for SSA_NAMEs with non-NULL SSA_NAME_VAR.

	* c-c++-common/Wrestrict-3.c: New test.

From-SVN: r257086

ARCv2 Core3 cpus are comming with dbnz support. Add this feature on
the tune option.

gcc/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arch.h (arc_tune_attr): Add ARC_TUNE_CORE_3.
        * config/arc/arc.c (arc_sched_issue_rate): Use ARC_TUNE_... .
        (arc_init): Likewise.
        (arc_override_options): Likewise.
        (arc_file_start): Choose Tag_ARC_CPU_variation based on arc_tune
        value.
        (hwloop_fail): Use TARGET_DBNZ when we want to check for dbnz insn
        support.
        * config/arc/arc.h (TARGET_DBNZ): Define.
        * config/arc/arc.md (attr tune): Add core_3, use ARC_TUNE_... to
        properly set the tune attribute.
        (dbnz): Use TARGET_DBNZ guard.
        * config/arc/arc.opt (mtune): Add core3 option.

From-SVN: r257085

Delegitimize address is used to undo the obfuscating effect of PIC
addresses, returning the address in a way which is understood by the
compiler.  The old version of the hook was outdated, not beeing able
to recognize the current addresses generated by the ARC backend.

gcc/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_delegitimize_address_0): Refactored to
	recognize new pic like addresses.
	(arc_delegitimize_address): Clean up.

testsuite/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

	* testsuite/gcc.target/arc/tdelegitimize_addr.c: New test.

From-SVN: r257084

gcc/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arches.def: Option mrf16 valid for all
        architectures.
        * config/arc/arc-c.def (__ARC_RF16__): New predefined macro.
        * config/arc/arc-cpus.def (em_mini): New cpu with rf16 on.
        * config/arc/arc-options.def (FL_RF16): Add mrf16 option.
        * config/arc/arc-tables.opt: Regenerate.
        * config/arc/arc.c (arc_conditional_register_usage): Handle
        reduced register file case.
        (arc_file_start): Set must have build attributes.
        * config/arc/arc.h (MAX_ARC_PARM_REGS): Conditional define using
        mrf16 option value.
        * config/arc/arc.opt (mrf16): Add new option.
        * config/arc/elf.h (ATTRIBUTE_PCS): Define.
        * config/arc/genmultilib.awk: Handle new mrf16 option.
        * config/arc/linux.h (ATTRIBUTE_PCS): Define.
        * config/arc/t-multilib: Regenerate.
        * doc/invoke.texi (ARC Options): Document mrf16 option.

libgcc/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/lib1funcs.S (__udivmodsi4): Use safe version for RF16
        option.
        (__divsi3): Use RF16 safe registers.
        (__modsi3): Likewise.

From-SVN: r257083

gcc/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h: Add arc_is_secure_call_p proto.
        * config/arc/arc.c (arc_handle_secure_attribute): New function.
        (arc_attribute_table): Add 'secure_call' attribute.
        (arc_print_operand): Print secure call operand.
        (arc_function_ok_for_sibcall): Don't optimize tail calls when
        secure.
        (arc_is_secure_call_p): New function.
        * config/arc/arc.md (call_i): Add support for sjli instruction.
        (call_value_i): Likewise.
        * config/arc/constraints.md (Csc): New constraint.

From-SVN: r257082

The ARCv2 ISA provides the JLI instruction, which is two-byte instructions
that can be used to reduce code size in an application. To make use of it,
we provide two new function attributes 'jli_always' and 'jli_fixed' which
will force the compiler to call the indicated function using a jli_s
instruction. The compiler also generates the entries in the JLI table for
the case when we use 'jli_always' attribute. In the case of 'jli_fixed'
the compiler assumes a fixed position of the function into JLI
table. Thus, the user needs to provide an assembly file with the JLI table
for the final link. This is usefully when we want to have a table in ROM
and a second table in the RAM memory.

The jli instruction usage can be also forced without the need to annotate
the source code via '-mjli-always' command.

gcc/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>
            John Eric Martin <John.Martin@emmicro-us.com>

        * config/arc/arc-protos.h: Add arc_is_jli_call_p proto.
        * config/arc/arc.c (_arc_jli_section): New struct.
        (arc_jli_section): New type.
        (rc_jli_sections): New static variable.
        (arc_handle_jli_attribute): New function.
        (arc_attribute_table): Add jli_always and jli_fixed attribute.
        (arc_file_end): New function.
        (TARGET_ASM_FILE_END): Define.
        (arc_print_operand): Reuse 'S' letter for JLI output instruction.
        (arc_add_jli_section): New function.
        (jli_call_scan): Likewise.
        (arc_reorg): Call jli_call_scan.
        (arc_output_addsi): Remove 'S' from printing asm operand.
        (arc_is_jli_call_p): New function.
        * config/arc/arc.md (movqi_insn): Remove 'S' from printing asm
        operand.
        (movhi_insn): Likewise.
        (movsi_insn): Likewise.
        (movsi_set_cc_insn): Likewise.
        (loadqi_update): Likewise.
        (load_zeroextendqisi_update): Likewise.
        (load_signextendqisi_update): Likewise.
        (loadhi_update): Likewise.
        (load_zeroextendhisi_update): Likewise.
        (load_signextendhisi_update): Likewise.
        (loadsi_update): Likewise.
        (loadsf_update): Likewise.
        (movsicc_insn): Likewise.
        (bset_insn): Likewise.
        (bxor_insn): Likewise.
        (bclr_insn): Likewise.
        (bmsk_insn): Likewise.
        (bicsi3_insn): Likewise.
        (cmpsi_cc_c_insn): Likewise.
        (movsi_ne): Likewise.
        (movsi_cond_exec): Likewise.
        (clrsbsi2): Likewise.
        (norm_f): Likewise.
        (normw): Likewise.
        (swap): Likewise.
        (divaw): Likewise.
        (flag): Likewise.
        (sr): Likewise.
        (kflag): Likewise.
        (ffs): Likewise.
        (ffs_f): Likewise.
        (fls): Likewise.
        (call_i): Remove 'S' asm letter, add jli instruction.
        (call_value_i): Likewise.
        * config/arc/arc.op (mjli-always): New option.
        * config/arc/constraints.md (Cji): New constraint.
        * config/arc/fpx.md (addsf3_fpx): Remove 'S' from printing asm
        operand.
        (subsf3_fpx): Likewise.
        (mulsf3_fpx): Likewise.
        * config/arc/simdext.md (vendrec_insn): Remove 'S' from printing
        asm operand.
        * doc/extend.texi (ARC): Document 'jli-always' and 'jli-fixed'
        function attrbutes.
        * doc/invoke.texi (ARC): Document mjli-always option.

gcc/testsuite
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * gcc.target/arc/jli-1.c: New file.
        * gcc.target/arc/jli-2.c: Likewise.

Co-Authored-By: John Eric Martin <John.Martin@emmicro-us.com>

From-SVN: r257081

From-SVN: r257080

2018-01-25  Sebastian Perta  <sebastian.perta@renesas.com>

	* config/rl78/rl78.c: if operand 2 is const avoid addition with 0
	and use incw and decw where possible
	* testsuite/gcc.target/rl78/test_addsi3_internal.c: new file

From-SVN: r257079

gcc/testsuite/ChangeLog:

2018-01-26  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	* gcc.target/aarch64/sve/peel_ind_1.c: Match (adrp|adr) in scan-assembler.
	* gcc.target/aarch64/sve/peel_ind_2.c: Likewise.
	* gcc.target/aarch64/sve/peel_ind_3.c: Likewise.

From-SVN: r257078

2018-01-26  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/81082
	* fold-const.c (fold_plusminus_mult_expr): Do not perform the
	association if it requires casting to unsigned.
	* match.pd ((A * C) +- (B * C) -> (A+-B)): New patterns derived
	from fold_plusminus_mult_expr to catch important cases late when
	range info is available.

	* gcc.dg/vect/pr81082.c: New testcase.
	* gcc.dg/tree-ssa/loop-15.c: XFAIL the (int)((unsigned)n + -1U) * n + n
	simplification to n * n.

From-SVN: r257077

	gcc/testsuite:
	* gcc.target/i386/mcount_pic.c: Only xfail get_pc_thunk scan on
	Solaris 10.
	* gcc.target/i386/pr63620.c: Likewise.

	gcc:
	* config/i386/sol2.h (USE_HIDDEN_LINKONCE): Remove.
	* configure.ac (hidden_linkonce): New test.
	* configure: Regenerate.
	* config.in: Regenerate.

From-SVN: r257076

gcc/
	* config/i386/avx512bitalgintrin.h (_mm512_bitshuffle_epi64_mask,
	_mm512_mask_bitshuffle_epi64_mask, _mm256_bitshuffle_epi64_mask,
	_mm256_mask_bitshuffle_epi64_mask, _mm_bitshuffle_epi64_mask,
	_mm_mask_bitshuffle_epi64_mask): Fix type.
	* config/i386/i386-builtin-types.def (UHI_FTYPE_V2DI_V2DI_UHI,
	USI_FTYPE_V4DI_V4DI_USI): Remove.
	* config/i386/i386-builtin.def (__builtin_ia32_vpshufbitqmb512_mask,
	__builtin_ia32_vpshufbitqmb256_mask,
	__builtin_ia32_vpshufbitqmb128_mask): Fix types.
	* config/i386/i386.c (ix86_expand_args_builtin): Remove old types.
	* config/i386/sse.md (VI1_AVX512VLBW): Change types.

gcc/testsuite/
	* gcc.target/i386/avx512bitalg-vpshufbitqmb-1.c: Add -mavx512f -mavx512bw.
	* gcc.target/i386/avx512bitalgvl-vpshufbitqmb-1.c: Add -mavx512bw.
	* gcc.target/i386/i386.exp: Fix types.

From-SVN: r257075

From-SVN: r257073

vbpermq produces its output in bits 48..63 of the target vector reg,
so the output cannot be lane swapped.

gcc/
	PR target/84033
	* config/rs6000/rs6000-p8swap.c (rtx_is_swappable_p): Exclude
	UNSPEC_VBPERMQ.  Sort other unspecs.
gcc/testsuite/
	PR target/84033
	* gcc.target/powerpc/swaps-p8-46.c: New.

From-SVN: r257070

    
    Add a Type::is_alias method to remove some existing loops and avoid
    adding a new one.
    
    Test case is https://golang.org/cl/89935.
    
    Fixes golang/go#23489
    
    Reviewed-on: https://go-review.googlesource.com/89975

From-SVN: r257069

    
    This was the original intent, as reflected in the long comment at the
    start of names.cc, but I forgot to implement it.
    
    Also, remove a leading ".0" from the final name.  That could occur for
    a method whose receiver type starts with 'u', as in that case we
    prepend a space to the mangled name, to avoid confusion with the
    Unicode mangling, and the space turns into ".0".
    
    Also, if the Unicode encoding would cause the final to start with
    "..u" or "..U", add a leading underscore.
    
    Patch gotest to not get fooled by some names.
    
    The result of these changes is that all symbols start with a letter or
    an underscore.
    
    Reviewed-on: https://go-review.googlesource.com/90015

From-SVN: r257068

gcc::jit::recording::union_ has some stray fields, which
are duplicates of those in the compound_type base class.

It looks like these have been present since the initial merger of the jit
branch to trunk (r217374), where it had three duplicate fields:

 location *m_loc;
 string *m_name;
 fields *m_fields;

I removed the duplicate field "m_fields" in r219564 but missed the other
two.

This patch removes them.

gcc/jit/ChangeLog:
	PR jit/81672
	* jit-recording.h (gcc::jit::recording::union_): Remove fields
	"m_loc" and "m_name".

From-SVN: r257066

re PR fortran/37577 ([meta-bug] change internal array descriptor format for better syntax, C interop TR, rank 15)

2018-25-01  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/37577
	* array.c (gfc_match_array_ref): If standard earlier than F2008
	it is an error if the reference dimension is greater than 7.
	libgfortran.h : Increase GFC_MAX_DIMENSIONS to 15. Change the
	dtype masks and shifts accordingly.
	* trans-array.c (gfc_conv_descriptor_dtype): Use the dtype
	type node to check the field.
	(gfc_conv_descriptor_dtype): Access the rank field of dtype.
	(duplicate_allocatable_coarray): Access the rank field of the
	dtype descriptor rather than the dtype itself.
	* trans-expr.c (get_scalar_to_descriptor_type): Store the type
	of 'scalar' on entry and use its TREE_TYPE if it is ARRAY_TYPE
	(ie. a character).
	(gfc_conv_procedure_call): Pass TREE_OPERAND (tmp,0) to
	get_scalar_to_descriptor_type if the actual expression is a
	constant.
	(gfc_trans_structure_assign): Assign the rank directly to the
	dtype rank field.
	* trans-intrinsic.c (gfc_conv_intrinsic_rank): Cast the result
	to default integer kind.
	(gfc_conv_intrinsic_sizeof): Obtain the element size from the
	'elem_len' field of the dtype.
	* trans-io.c (gfc_build_io_library_fndecls): Replace
	gfc_int4_type_node with dtype_type_node where necessary.
	(transfer_namelist_element): Use gfc_get_dtype_rank_type for
	scalars.
	* trans-types.c : Provide 'get_dtype_type_node' to acces the
	dtype_type_node and, if necessary, build it.
	The maximum size of an array element is now determined by the
	maximum value of size_t.
	Update the description of the array descriptor, including the
	type def for the dtype_type.
	(gfc_get_dtype_rank_type): Build a constructor for the dtype.
	Distinguish RECORD_TYPEs that are BT_DERIVED or BT_CLASS.
	(gfc_get_array_descriptor_base): Change the type of the dtype
	field to dtype_type_node.
	(gfc_get_array_descr_info): Get the offset to the rank field of
	the dtype.
	* trans-types.h : Add a prototype for 'get_dtype_type_node ()'.
	* trans.h : Define the indices of the dtype fields.

2018-25-01  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/37577
	* gfortran.dg/coarray_18.f90: Allow dimension 15 for F2008.
	* gfortran.dg/coarray_lib_this_image_2.f90: Change 'array1' to
	'array01' in the tree dump comparison.
	* gfortran.dg/coarray_lib_token_4.f90: Likewise.
	* gfortran.dg/inline_sum_1.f90: Similar - allow two digits.
	* gfortran.dg/rank_1.f90: Allow dimension 15 for F2008.

2018-25-01  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/37577
	* caf/single.c (_gfortran_caf_failed_images): Access the 'type'
	and 'elem_len' fields of the dtype instead of the shifts.
	(_gfortran_caf_stopped_images): Likewise.
	* intrinsics/associated.c (associated): Compare the 'type' and
	'elem_len' fields instead of the dtype.
	* caf/date_and_time.c : Access the dtype fields rather using
	shifts and masks.
	* io/transfer.c (transfer_array ): Comment on item count.
	(set_nml_var,st_set_nml_var): Change dtype type and use fields.
	(st_set_nml_dtio_var): Likewise.
	* libgfortran.h : Change definition of GFC_ARRAY_DESCRIPTOR and
	add a typedef for the dtype_type. Change the GFC_DTYPE_* macros
	to access the dtype fields.

From-SVN: r257065

From-SVN: r257064

From-SVN: r257063

	* elf.c (elf_open_debugfile_by_debuglink): Don't check CRC if the
	desired CRC is zero.
	(elf_add): Don't clear *found_sym and *found_dwarf if debuginfo.

From-SVN: r257062

    
    The top three region number bits must be masked out before
    right-shifting the address bits into place, otherwise they will be
    copied down into the lower always-zero address bits.
    
    Reviewed-on: https://go-review.googlesource.com/84535

From-SVN: r257061

	PR middle-end/83055
	* predict.c (drop_profile): Do not push/pop cfun; update also
	node->count.
	(handle_missing_profiles): Fix logic looking for zero profiles.

	* gcc.dg/torture/pr83055.c: New testcase.

From-SVN: r257059

	PR c++/84031
	* decl.c (find_decomp_class_base): Ignore unnamed bitfields.  Ignore
	recursive calls that return ret.
	(cp_finish_decomp): Ignore unnamed bitfields.

	* g++.dg/cpp1z/decomp36.C: New test.

From-SVN: r257057

From-SVN: r257053

From-SVN: r257052

	PR middle-end/83977
	* ipa-fnsummary.c (compute_fn_summary): Clear can_change_signature
	on functions with #pragma omp declare simd or functions with simd
	attribute.
	* omp-simd-clone.c (expand_simd_clones): Revert 2018-01-24 change.
	* config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
	Remove trailing \n from warning_at calls.

	* c-c++-common/gomp/pr83977-1.c: Add -w to dg-options.

From-SVN: r257051

	PR libstdc++/81076
	* include/c_global/cstddef (__byte_operand): Define primary template.
	* testsuite/18_support/byte/81076.cc: New test.

From-SVN: r257050

    
    Reviewed-on: https://go-review.googlesource.com/89815

From-SVN: r257049

2018-01-25  Tom de Vries  <tom@codesourcery.com>

	PR target/84028
	* config/nvptx/nvptx.c (nvptx_single): Add exit insn after noreturn call
	for neutered workers.

	* testsuite/libgomp.oacc-fortran/pr84028.f90: New test.

From-SVN: r257046

gcc_release (build_sources): Use getconf to get at the number of cores in the system and pass -jN to gcc_build.

2018-01-25  Richard Biener  <rguenther@suse.de>

	* gcc_release (build_sources): Use getconf to get at the number
	of cores in the system and pass -jN to gcc_build.

From-SVN: r257045

I'd somehow thought that the dump lines in these two tests were already
correctly guarded, but they weren't.

2018-01-25  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/testsuite/
	* gcc.dg/vect/vect-reduc-or_1.c: Require whole_vector_shift for
	the shift dump line.
	* gcc.dg/vect/vect-reduc-or_2.c: Likewise.

From-SVN: r257044

From-SVN: r257040

	PR other/68239
	* mmap.c (backtrace_free_locked): Don't put more than 16 entries
	on the free list.

From-SVN: r257039

[gcc/testsuite]
2018-01-24  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/81550
	* gcc.target/powerpc/loop_align.c: Use unsigned long for the loop
	index instead of int, which allows IVOPTs to properly optimize the
	loop.

From-SVN: r257038

These testcases jit-compile functions that return char, but
were erroneously calling them as if they returned int.

This led to errors for certain target configurations (e.g.
reading from %eax (32-bit) in the harness when only %al (8-bit)
had been written to in the jit-compiled function).

gcc/testsuite/ChangeLog:
	PR jit/82846
	* jit.dg/test-alignment.c (create_aligned_code): Fix return type
	of "fn_type" typedef.
	* jit.dg/test-alignment.cc (verify_aligned_code): Likewise.

From-SVN: r257037

From-SVN: r257036

    
    Encode all external symbol names using only ASCII alphanumeric
    characters, underscore, and dot.  Use a scheme that can be reliably
    demangled to a somewhat readable version as described in the long
    comment in names.cc.
    
    A minor cleanup discovered during this was that we were treating
    function types as different if one had a NULL parameters_ field and
    another has a non-NULL parameters_ field that has no parameters.  This
    worked because we mangled them slightly differently.  We now mangle
    them the same, so we treat them as equal, as we should anyhow.
    
    Reviewed-on: https://go-review.googlesource.com/89555

	* go.go-torture/execute/names-1.go: New test.

From-SVN: r257033

PR target/68467 is libgcc failing to build for m68k-linux-gnu
configured for ColdFire.

Jeff has an analysis in the PR identifying the problem as resulting
from the callers of libcalls with 1-byte or 2-byte arguments wanting
to push just 1 or 2 bytes on the stack, while the libcall
implementations have the normal C ABI and expect 4-byte arguments.
For normal C functions, I believe the TARGET_PROMOTE_PROTOTYPES
definition would ensure such arguments get passed as 4-byte, but that
does not apply for libcalls.

This patch fixes the issue by defining TARGET_PROMOTE_FUNCTION_MODE
for m68k.  The definition is conservative, only applying promotions in
the case of arguments to libcalls; otherwise it returns the unpromoted
type, which I believe matches what the default implementation of the
hook would have done on m68k.

I have tested that this fixes the libgcc build for ColdFire, and, in
conjunction with one glibc patch, this enables glibc to build cleanly
for ColdFire and to pass the compilation parts of the glibc testsuite
except for one test unrelated to this patch (while glibc and the
compilation parts of the testsuite continue to build OK for
non-ColdFire m68k, as expected).  I have *not* run any GCC tests for
this patch, or any execution tests for m68k.

	PR target/68467
	* config/m68k/m68k.c (m68k_promote_function_mode): New function.
	(TARGET_PROMOTE_FUNCTION_MODE): New macro.

From-SVN: r257032

	PR target/83994
	* i386.c (get_probe_interval): Move to earlier point.
	(ix86_compute_frame_layout): If -fstack-clash-protection and
	the frame is larger than the probe interval, then use pushes
	to save registers rather than reg->mem moves.
	(ix86_expand_prologue): Remove conditional for int_registers_saved
	assertion.

	PR target/83994
	* gcc.target/i386/pr83994.c: New test.

From-SVN: r257031