re PR debug/82425 (gcc.dg/guality/inline-params-2.c fail)

2018-01-10  Richard Biener  <rguenther@suse.de>

PR debug/82425
* gcc.dg/guality/inline-params-2.c: Un-XFAIL for slim LTO.

From-SVN: r256429

re PR debug/83765 (LTO bootstrap with Ada fails)

2018-01-10  Richard Biener  <rguenther@suse.de>

PR debug/83765
* dwarf2out.c (gen_subprogram_die): Hoist old_die && declaration
early out so it also covers the case where we have a non-NULL
origin.

From-SVN: r256428

Don't use permutes for single-element accesses (PR83753)

After cunrolling the inner loop, the remaining loop in the testcase
has a single 32-bit access and a group of 64-bit accesses.  We first
try to vectorise at 128 bits (VF 4), but decide not to for cost reasons.
We then try with 64 bits (VF 2) instead.  This means that the group
of 64-bit accesses uses a single-element vector, which is deliberately
supported as of r251538.  We then try to create "permutes" for these
single-element vectors and fall foul of:

      for (i = 0; i < 6; i++)
sel[i] += exact_div (nelt, 2);

in vect_grouped_store_supported, since nelt==1.

Maybe we shouldn't even be trying to vectorise statements in the
single-element case, and instead just copy the scalar statement
for each member of the group.  But until then, this patch treats
non-strided grouped accesses as VMAT_CONTIGUOUS if no permutation
is necessary.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR tree-optimization/83753
* tree-vect-stmts.c (get_group_load_store_type): Use VMAT_CONTIGUOUS
for non-strided grouped accesses if the number of elements is 1.

gcc/testsuite/
PR tree-optimization/83753
* gcc.dg/torture/pr83753.c: New test.

From-SVN: r256427

PR 83740 Wrong string length type in bounds check

This patch fixes up the formatting and corrects the PR number in the
ChangeLog for r256425.

gcc/fortran/ChangeLog:

2018-01-10  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/83740
* trans-array.c (gfc_trans_array_ctor_element): Fix formatting.

From-SVN: r256426

PR 84740 Wrong string length type in bounds check

Need to convert the RHS to the type of the LHS when assigning.

Regtested on x86_64-pc-linux-gnu, committed as obvious.

gcc/fortran/ChangeLog:

2018-01-10  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/84740
* trans-array.c (gfc_trans_array_ctor_element): Convert RHS to the
LHS type when assigning.

From-SVN: r256425

re PR target/81616 (Update -mtune=generic for the current Intel and AMD processors)

PR target/81616
* i386.c (ix86_vectorize_builtin_gather): Check TARGET_USE_GATHER.
* i386.h (TARGET_USE_GATHER): Define.
* x86-tune.def (X86_TUNE_USE_GATHER): New.

From-SVN: r256424

avx2-gather-1.c: Add -march.

* gcc.target/i386/avx2-gather-1.c: Add -march.
* gcc.target/i386/avx2-gather-2.c: Add -march.
* gcc.target/i386/avx2-gather-3.c: Add -march.
* gcc.target/i386/avx2-gather-4.c: Add -march.
* gcc.target/i386/avx2-gather-5.c: Add -march.
* gcc.target/i386/avx2-gather-6.c: Add -march.
* gcc.target/i386/avx512f-gather-1.c: Add -march.
* gcc.target/i386/avx512f-gather-2.c: Add -march.
* gcc.target/i386/avx512f-gather-3.c: Add -march.
* gcc.target/i386/avx512f-gather-4.c: Add -march.
* gcc.target/i386/avx512f-gather-5.c: Add -march.
* gcc.target/i386/avx512f-i32gatherd512-1.c: Add -march.
* gcc.target/i386/avx512f-i32gatherd512-2.c: Add -march.
* gcc.target/i386/avx512f-i32gatherpd512-1.c: Add -march.
* gcc.target/i386/avx512f-i32gatherpd512-2.c: Add -march.
* gcc.target/i386/avx512f-i32gatherps512-1.c: Add -march.

From-SVN: r256423

Clean up partitioning in try_optimize_cfg (PR bootstrap/82831).

2018-01-10  Martin Liska  <mliska@suse.cz>

PR bootstrap/82831
* basic-block.h (CLEANUP_NO_PARTITIONING): New define.
* bb-reorder.c (pass_reorder_blocks::execute): Do not clean up
partitioning.
* cfgcleanup.c (try_optimize_cfg): Fix up partitioning if
CLEANUP_NO_PARTITIONING is not set.

From-SVN: r256422

Mostly revert r254296

r254296 added support for (const ...) wrappers around vectors,
but in the end the agreement was to use a variable-length
encoding of CONST_VECTOR (and VECTOR_CST) instead.  This patch
therefore reverts the bits that are no longer needed.

The rtl.texi part isn't a full revert, since r254296 also updated the
documentation to mention unspecs in address calculations, and to relax
the requirement that the mode had to be Pmode.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* doc/rtl.texi: Remove documentation of (const ...) wrappers
for vectors, as a partial revert of r254296.
* rtl.h (const_vec_p): Delete.
(const_vec_duplicate_p): Don't test for vector CONSTs.
(unwrap_const_vec_duplicate, const_vec_series_p): Likewise.
* expmed.c (make_tree): Likewise.

Revert:
* common.md (E, F): Use CONSTANT_P instead of checking for
CONST_VECTOR.
* emit-rtl.c (gen_lowpart_common): Use const_vec_p instead of
checking for CONST_VECTOR.

From-SVN: r256421

re PR rtl-optimization/83575 (ICE: verify_flow_info failed (error: multiple hot/cold transitions found))

PR middle-end/83575
* predict.c (force_edge_cold): Handle in more sane way edges
with no prediction.

From-SVN: r256420

runtime: work around escaping closure in export_test.go

    When compiling runtime, it is not allowed for local variables
    and closures to be heap allocated. In one test, there is a go
    statement with a closure. In the gc compiler, it distinguishes
    capturing variable by value vs. by address, and rewrites it to
    passing the captured values as arguments. Currently we don't
    have this, and the escape analysis decides to heap allocate the
    closure and also the captured variables, which is not allowed.
    Work around it by passing the variables explicitly.

    This is in preparation of turning on escape analysis for the
    runtime.

    Reviewed-on: https://go-review.googlesource.com/86245

From-SVN: r256419

runtime: noescape some functions/variables

    This is in preparation of turning on escape analysis for the
    runtime.

    - In gccgo, systemstack is implemented with mcall, which is not
      go:noescape. Wrap the closure in noescape so the escape analysis
      does not think it escapes.

    - Mark some C functions go:noescape. They do not leak arguments.

    - Use noescape function to make a few local variables' addresses
      not escape. The escape analysis cannot figure out because they
      are assigned to pointer indirections.

    Reviewed-on: https://go-review.googlesource.com/86244

From-SVN: r256418

cmd/go: add AIX support

    For gccgo code avoid --whole-archive and -(.  Use -blibpath instead of
    -rpath.

    Reviewed-on: https://go-review.googlesource.com/86956

From-SVN: r256417

libgo: add aix build tags

    Reviewed-on: https://go-review.googlesource.com/86936

From-SVN: r256416

Daily bump.

From-SVN: r256415

compiler: use temporary variable for stack allocation

    Currently, allocation expression that can be allocated on stack
    is implemented with __builtin_alloca, which turns into
    __morestack_allocate_stack_space, which may call C malloc. This
    may be slow. Also if this happens during certain runtime
    functions (e.g. write barrier), bad things might happen (when
    the escape analysis is enabled for the runtime). Make a temporary
    variable on stack for the allocation instead.

    Also remove the write barrier in the assignment in building heap
    expression when it is stack allocated.

    Reviewed-on: https://go-review.googlesource.com/86242

From-SVN: r256412

compiler: set captured variable address to nonescape until further flooded

    The escape analysis models closures by flowing captured variable
    address to the closure node. However, the escape state for the
    address expressions remained unset as ESCAPE_UNKNOWN. This
    caused later passes to conclude that the address escapes. Fix this by
    setting its escape state to ESCAPE_NONE first. If it escapes
    (because the closure escapes), the flood phase will set its
    escape state properly.

    Reviewed-on: https://go-review.googlesource.com/86240

From-SVN: r256411

compiler: stack allocate defer thunk

    Defer statement may need to allocate a thunk. When it is not
    inside a loop, this can be stack allocated, as it runs before
    the function finishes.

    Reviewed-on: https://go-review.googlesource.com/85639

From-SVN: r256410

* es.po: Update.

From-SVN: r256408

compiler: make non-escaping Bound_method_expression not heap allocate

    Bound_method_expression needs a closure. Stack allocate the
    closure when it does not escape.

    Reviewed-on: https://go-review.googlesource.com/85638

From-SVN: r256407

compiler: move some escape check to Mark_address_taken

    Move some check of escape state earlier, from get_backend to
    Mark_address_taken. So we can reclaim escape analysis Nodes
    before kicking off the backend (not done in this CL). Also it
    makes it easier to check variables and closures do not escape
    when the escape analysis is run for the runtime package (also
    not done in this CL).

    Reviewed-on: https://go-review.googlesource.com/85735

From-SVN: r256406

compiler: support go:noescape cross package

    CL 83876 added support of go:noescape pragma, but it only works
    for functions called from the same package. The pragma did not
    take effect for exported functions that are not called from
    the same package. The reason is that top level function
    declarations are not traversed, and only reached from calls
    from other functions. This CL adds this support. The Traverse
    class is extended with a mode to traverse function declarations.

    Reviewed-on: https://go-review.googlesource.com/85637

From-SVN: r256405

compiler: stack allocate non-escaping makeslice

    If we're making a slice of constant size that does not need to
    escape, allocate it on stack.

    In lower, do not create temporaries for constant size makeslice,
    so that it is easier to detect the slice is constant size later.

    Reviewed-on: https://go-review.googlesource.com/85636

From-SVN: r256404

compiler: delay escaping sliced arrays

    Arrays that are sliced are set to escape in type checking, very
    early in compilation. The escape analysis runs later but cannot
    undo it. This CL changes it to not escape in the early stage.
    Later the escape analysis will make it escape when needed.

    Reviewed-on: https://go-review.googlesource.com/85635

From-SVN: r256403

i386: Add a test for PR target/78585

PR target/78585 has been fixed for GCC 7 by

commit 7ed04d053eead43d87dff40fb4e2904219afc4d5
Author: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Wed Nov 30 13:02:07 2016 +0000

* config/i386/i386.c (dimode_scalar_chain::convert_op): Avoid
sharing the SUBREG rtx between move and following insn.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243018 138bc75d-0d04-0410-961f-82ee72b054a4

PR target/78585:
* gcc.target/i386/pr78585.c: New test.

From-SVN: r256402

PR libstdc++/80276 fix pretty printers for array smart pointers

PR libstdc++/80276
* python/libstdcxx/v6/printers.py (SharedPointerPrinter)
(UniquePointerPrinter): Print correct template argument, not type of
the pointer.
(TemplateTypePrinter._recognizer.recognize): Handle failure to lookup
a type.
* testsuite/libstdc++-prettyprinters/cxx11.cc: Test unique_ptr of
array type.
* testsuite/libstdc++-prettyprinters/cxx17.cc: Test shared_ptr and
weak_ptr of array types.

From-SVN: r256400

os/signal/internal/pty: build on Solaris

    Patch from Rainer Orth.

    Reviewed-on: https://go-review.googlesource.com/87037

From-SVN: r256399

compiler: make top-level decl for address-taken non-escaping locals

    If a local variable's address is taken and passed out of its
    lexical scope, GCC backend may reuse the stack slot for the
    variable, not knowing it is still live through a pointer. In
    this case, we create a top-level temporary variable and let the
    user-defined variable refer to the temporary variable as its
    storage location. As the temporary variable is declared at the
    top level, its stack slot will remain live throughout the
    function.

    Reviewed-on: https://go-review.googlesource.com/84675

* go-gcc.cc (local_variable): Add decl_var parameter.

From-SVN: r256398

re PR c++/83734 (ice in cxx_eval _statement_list, at cp/constexpr.c:3869)

PR c++/83734
* constexpr.c (cxx_eval_statement_list): Ignore DEBUG_BEGIN_STMTs
in STATEMENT_LIST.  Remove unneeded assert.

* g++.dg/cpp0x/pr83734.C: New test.

From-SVN: r256397

re PR libstdc++/83709 (Inserting duplicates into an unordered associative containers causes the container to invalidate iterators)

2018-01-09  François Dumont  <fdumont@gcc.gnu.org>

PR libstdc++/83709
* include/bits/hashtable_policy.h
(__distance_fwd(_Iterator, _Iterator, input_iterator_tag)): Return 1 if
__first != __last.
(_Insert_base::_M_insert_range(_Ite, _Ite, _NodeGetter, true_type)): New.
(_Insert_base::_M_insert_range(_Ite, _Ite, _NodeGetter, false_type)):
Add false_type parameter.
(_Insert_base::insert): Adapt.
* include/bits/hashtable.h (_Hashtable::operator=(initializzr_list<>)):
Adapt.
(_Hashtable::_M_insert(_Arg&&, const _NodeGen&, true_type, size_t)):
 Add __n_elt parameter, defaulted to 1.
(_Hashtable::_M_insert_unique_node): Likewise. Use it to call rehash
policy _M_need_rehash.
(_Hashtable::_M_merge_unique): Pass target number of elements to add to
produce only 1 rehash if necessary.
* testsuite/23_containers/unordered_map/insert/83709.cc: New.
* testsuite/23_containers/unordered_set/insert/83709.cc: New.

From-SVN: r256396

altivec.md (p8_vmrgow): Add support for V2DI, V2DF, V4SI, V4SF types.

gcc/ChangeLog:

2018-01-09  Carl Love  <cel@us.ibm.com>

* config/rs6002/altivec.md (p8_vmrgow): Add support for V2DI, V2DF,
V4SI, V4SF types.
(p8_vmrgew): Add support for V2DI, V2DF, V4SF types.
* config/rs6000/rs6000-builtin.def: Add definitions for FLOAT2_V2DF,
VMRGEW_V2DI, VMRGEW_V2DF, VMRGEW_V4SF, VMRGOW_V4SI, VMRGOW_V4SF,
VMRGOW_V2DI, VMRGOW_V2DF.  Remove definition for VMRGOW.
* config/rs6000/rs6000-c.c (VSX_BUILTIN_VEC_FLOAT2,
P8V_BUILTIN_VEC_VMRGEW, P8V_BUILTIN_VEC_VMRGOW):  Add definitions.
* config/rs6000/rs6000-protos.h: Add extern defition for
rs6000_generate_float2_double_code.
* config/rs6000/rs6000.c (rs6000_generate_float2_double_code): Add
function.
* config/rs6000/vsx.md (vsx_xvcdpsp): Add define_insn.
(float2_v2df): Add define_expand.

gcc/testsuite/ChangeLog:

2017-01-09 Carl Love  <cel@us.ibm.com>

* gcc.target/powerpc/builtins-1.c (main): Add tests for vec_mergee and
vec_mergeo builtins with float, double, long long, unsigned long long,
bool long long  arguments.
* gcc.target/powerpc/builtins-3-runnable.c (main): Add test for
vec_float2 with double arguments.
* gcc.target/powerpc/builtins-mergew-mergow.c: New runable test for the
vec_mergew and vec_mergow builtins.

From-SVN: r256395

compiler: add escape analysis debug hash

    Add a flag -fgo-debug-escape-hash for debugging escape analysis.
    It takes a binary string, optionally led by a "-", as argument.
    When specified, the escape analysis runs only on functions whose
    name is hashed to a value with matching suffix. The "-" sign
    negates the match, i.e. the analysis runs only on functions with
    non-matching hash.

    Reviewed-on: https://go-review.googlesource.com/83878

* lang.opt (fgo-debug-escape-hash): New option.
* go-c.h (struct go_create_gogo_args): Add debug_escape_hash
field.
* go-lang.c (go_langhook_init): Set debug_escape_hash field.
* gccgo.texi (Invoking gccgo): Document -fgo-debug-escape-hash.

From-SVN: r256393

Part of the fix for pr82190 got undone by my newer memcmp checkin.

From-SVN: r256392

re PR fortran/83742 (ICE in gfc_is_simply_contiguous, at fortran/expr.c:5323)

2018-01-09  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/83742
* expr.c (gfc_is_simply_contiguous): Check for NULL pointer.

2018-01-09  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/83742
* gfortran.dg/contiguous_6.f90: New test.

From-SVN: r256391

PR libstdc++/59253 Improve pretty printers for smart pointers

PR libstdc++/59253 (partial)
* python/libstdcxx/v6/printers.py (SmartPtrIterator): Common iterator
type for pointer stored by shared_ptr, weak_ptr and unique_ptr.
(SharedPointerPrinter, UniquePointerPrinter): Treat stored values as
children.
* testsuite/libstdc++-prettyprinters/cxx11.cc: Update expected output
of unique_ptr printer.
* testsuite/libstdc++-prettyprinters/shared_ptr.cc: Update expected
output of shared_ptr printer.

From-SVN: r256390

compiler: use macro Unordered_map instead of std::unordered_map

    Per gcc/go/go-system.h, this is what it is supposed to be, to
    support wider platforms.

    Reviewed-on: https://go-review.googlesource.com/85975

From-SVN: r256389

Forgot to commit changelog entry:

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

* config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
function.
(do_ifelse): New function.
(do_isel): New function.
(do_sub3): New function.
(do_add3): New function.
(do_load_mask_compare): New function.
(do_overlap_load_compare): New function.
(expand_compare_loop): New function.
(expand_block_compare): Call expand_compare_loop() when appropriate.
* config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
option description.
(-mblock-compare-inline-loop-limit): New option.

From-SVN: r256388

re PR rtl-optimization/83628 (performance regression when accessing arrays on alpha)

PR target/83628
* combine.c (force_int_to_mode) <case ASHIFT>: Use mode instead of
op_mode in the force_to_mode call.

From-SVN: r256387

[AArch64] Use vec_perm_indices helper routines

This patch makes the AArch64 vec_perm_const code use the new
vec_perm_indices routines, instead of checking each element individually.
This means that they extend naturally to variable-length vectors.

Also, aarch64_evpc_dup was the only function that generated rtl when
testing_p is true, and that looked accidental.  The patch adds the
missing check and then replaces the gen_rtx_REG/start_sequence/
end_sequence stuff with an assert that no rtl is generated.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64.c (aarch64_evpc_trn): Use d.perm.series_p
instead of checking each element individually.
(aarch64_evpc_uzp): Likewise.
(aarch64_evpc_zip): Likewise.
(aarch64_evpc_ext): Likewise.
(aarch64_evpc_rev): Likewise.
(aarch64_evpc_dup): Test the encoding for a single duplicated element,
instead of checking each element individually.  Return true without
generating rtl if
(aarch64_vectorize_vec_perm_const): Use all_from_input_p to test
whether all selected elements come from the same input, instead of
checking each element individually.  Remove calls to gen_rtx_REG,
start_sequence and end_sequence and instead assert that no rtl is
generated.

From-SVN: r256385

[AArch64] Reject (high (const (plus anchor offset)))

The aarch64_legitimate_constant_p tests for HIGH and CONST seem
to be the wrong way round: (high (const ...)) is valid rtl that
could be passed in, but (const (high ...)) isn't.  As it stands,
we disallow anchor+offset but allow (high anchor+offset).

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64.c (aarch64_legitimate_constant_p): Fix
order of HIGH and CONST checks.

From-SVN: r256384

Fix permute handling when vectorising scatters

As mentioned in https://gcc.gnu.org/ml/gcc-patches/2017-11/msg01575.html ,
the scatter handling in vectorizable_store seems to be dead code at the
moment.  Enabling it with the vect_analyze_data_ref_access part of
that patch triggered an ICE in the avx512f-scatter-*.c tests (which
previously didn't use scatters).  The problem was that the NARROW
and WIDEN handling uses permute_vec_elements to marshal the inputs,
and permute_vec_elements expected the lhs of the stmt to be an SSA_NAME,
which of course it isn't for stores.

This patch makes permute_vec_elements create a fresh variable in this case.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* tree-vect-stmts.c (permute_vec_elements): Create a fresh variable
if the destination isn't an SSA_NAME.

From-SVN: r256383

re PR tree-optimization/83668 (wrong code with -O -fno-tree-dominator-opts -fgraphite-identity)

2018-01-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83668
* graphite.c (canonicalize_loop_closed_ssa): Add edge argument,
move prologue...
(canonicalize_loop_form): ... here, renamed from ...
(canonicalize_loop_closed_ssa_form): ... this and amended to
swap successor edges for loop exit blocks to make us use
the RPO order we need for initial schedule generation.

* gcc.dg/graphite/pr83668.c: New testcase.

From-SVN: r256381

Fix folding of Inf/NaN comparisons for -ftrapping-math (PR tree-optimization/64811).

The folding of comparisons against Inf (to constants or comparisons
with the maximum finite value) has various cases where it introduces
or loses "invalid" exceptions for comparisons with NaNs.

Folding x > +Inf to 0 should not be about HONOR_SNANS - ordered
comparisons of both quiet and signaling NaNs should raise invalid.

x <= +Inf is not the same as x == x, because again that loses an
exception (equality comparisons don't raise exceptions except for
signaling NaNs).

x == +Inf is not the same as x > DBL_MAX, and a similar issue applies
with the x != +Inf case - that transformation causes a spurious
exception.

This patch fixes the conditionals on the folding to avoid such
introducing or losing exceptions.

Bootstrapped with no regressions on x86_64-pc-linux-gnu (where the
cases involving spurious exceptions wouldn't have failed anyway before
GCC 8 because of unordered comparisons wrongly always having formerly
been used by the back end).  Also tested for powerpc-linux-gnu
soft-float that this fixes many glibc math/ test failures that arose
in that configuration because this folding affected the IBM long
double support in libgcc (no such failures appeared for hard-float
because of the bug of powerpc hard-float always using unordered
comparisons) - some failures remain, but I believe them to be
unrelated.

PR tree-optimization/64811
gcc:
* match.pd: When optimizing comparisons with Inf, avoid
introducing or losing exceptions from comparisons with NaN.

gcc/testsuite:
* gcc.dg/torture/inf-compare-1.c, gcc.dg/torture/inf-compare-2.c,
gcc.dg/torture/inf-compare-3.c, gcc.dg/torture/inf-compare-4.c,
gcc.dg/torture/inf-compare-5.c, gcc.dg/torture/inf-compare-6.c,
gcc.dg/torture/inf-compare-7.c, gcc.dg/torture/inf-compare-8.c:
New tests.
* gcc.c-torture/execute/ieee/fp-cmp-7.x: New file.

From-SVN: r256380

Add gcc_assert about stack alignment (PR sanitizer/82517).

2018-01-09  Martin Liska  <mliska@suse.cz>

PR sanitizer/82517
* asan.c (shadow_mem_size): Add gcc_assert.

From-SVN: r256378

re PR target/79883 (avr i18n: untranslated "interrupt" or "signal")

PR target/79883
* gcc.target/avr/torture/pr57631.c (dg-warning): Quote 'signal'.

From-SVN: r256376

re PR target/82641 (Unable to enable crc32 for a certain function with target attribute on ARM (aarch32))

2018-01-09  Tamar Christina  <tamar.christina@arm.com>

        PR target/82641
        * gcc.target/arm/pragma_fpu_attribute.c: Rewrite to use
        no NEON and require softfp or hard float-abi.
        * gcc.target/arm/pragma_fpu_attribute_2.c: Likewise.

From-SVN: r256375

typo

From-SVN: r256374

Don't save registers in main().

gcc/
Don't save registers in main().
PR target/83737
* doc/invoke.texi (AVR Options) [-mmain-is-OS_task]: Document it.
* config/avr/avr.opt (-mmain-is-OS_task): New target option.
* config/avr/avr.c (avr_set_current_function): Don't error if
naked, OS_task or OS_main are specified at the same time.
(avr_function_ok_for_sibcall): Don't disable sibcalls for OS_task,
OS_main.
(avr_insert_attributes) [-mmain-is-OS_task] <main>: Add OS_task
attribute.
* common/config/avr/avr-common.c (avr_option_optimization_table):
Switch on -mmain-is-OS_task for optimizing compilations.

From-SVN: r256373

re PR tree-optimization/83572 ([graphite] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 15, not 13))

2018-01-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83572
* graphite.c: Include cfganal.h.
(graphite_transform_loops): Connect infinite loops to exit
and remove fake edges at the end.

* gcc.dg/graphite/pr83572.c: New testcase.

From-SVN: r256372

* ipa-inline.c (edge_badness): Revert accidental checkin.

From-SVN: r256370

re PR c++/80763 (-O3 causes error: inline clone in same comdat group list)

PR ipa/80763
* ipa-comdats.c (set_comdat_group): Only set comdat group of real
symbols; not inline clones.

From-SVN: r256369

re PR target/83507 (ICE in internal_dfa_insn_code_* for powerpc targets)

PR target/83507
* modulo-sched.c (schedule_reg_moves): Punt if we'd need to move
hard registers.  Formatting fixes.

* gcc.dg/sms-13.c: New test.

From-SVN: r256368

re PR preprocessor/83722 (the ICE dumper doesn't comment-out some error messages)

PR preprocessor/83722
* gcc.c (try_generate_repro): Pass
&temp_stderr_files[RETRY_ICE_ATTEMPTS - 1] rather than
&temp_stdout_files[RETRY_ICE_ATTEMPTS - 1] as last argument to
do_report_bug.

From-SVN: r256367

re PR fortran/83741 (ICE in gfc_match_allocate, at fortran/match.c:4074)

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

PR Fortran/83741
* gfortran.dg/allocate_assumed_charlen_3.f90: New test.

From-SVN: r256366

libgo: update to Go1.10beta1

    Update the Go library to the 1.10beta1 release.

    Requires a few changes to the compiler for modifications to the map
    runtime code, and to handle some nowritebarrier cases in the runtime.

    Reviewed-on: https://go-review.googlesource.com/86455

gotools/:
* Makefile.am (go_cmd_vet_files): New variable.
(go_cmd_buildid_files, go_cmd_test2json_files): New variables.
(s-zdefaultcc): Change from constants to functions.
(noinst_PROGRAMS): Add vet, buildid, and test2json.
(cgo$(EXEEXT)): Link against $(LIBGOTOOL).
(vet$(EXEEXT)): New target.
(buildid$(EXEEXT)): New target.
(test2json$(EXEEXT)): New target.
(install-exec-local): Install all $(noinst_PROGRAMS).
(uninstall-local): Uninstasll all $(noinst_PROGRAMS).
(check-go-tool): Depend on $(noinst_PROGRAMS).  Copy down
objabi.go.
(check-runtime): Depend on $(noinst_PROGRAMS).
(check-cgo-test, check-carchive-test): Likewise.
(check-vet): New target.
(check): Depend on check-vet.  Look at cmd_vet-testlog.
(.PHONY): Add check-vet.
* Makefile.in: Rebuild.

From-SVN: r256365

match.c (gfc_match_allocate): Check for NULL pointer.

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

* match.c (gfc_match_allocate): Check for NULL pointer.

From-SVN: r256364

RISC-V: Fix -msave-restore bug with sibcalls.

2018-01-08  Monk Chiang  <sh.chiang04@gmail.com>
    Kito Cheng  <kito.cheng@gmail.com>

gcc/
* config/riscv/riscv.c (machine_function::is_leaf): Remove field.
(riscv_leaf_function_p): Delete.
(riscv_function_ok_for_sibcall): Return false when TARGET_SAVE_RESTORE.

2018-01-08  Chih-Mao Chen <pkmx.tw@gmail.com>
    Monk Chiang  <sh.chiang04@gmail.com>

gcc/testsuite/
* gcc.target/riscv/save-restore-1.c: New.

From-SVN: r256362

Daily bump.

From-SVN: r256361

re PR target/83677 (PPC: The xxpermr instruction is not generated correctly)

[gcc]

2018-01-08  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

PR target/83677
* config/rs6000/altivec.md (*altivec_vpermr_<mode>_internal):
Reverse order of second and third operands in first alternative.
* config/rs6000/rs6000.c (rs6000_expand_vector_set): Reverse order
of first and second elements in UNSPEC_VPERMR vector.
(altivec_expand_vec_perm_le): Likewise.

[gcc/testsuite]

2018-01-08  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

PR target/83677
* gcc.target/powerpc/pr83677.c: New file.

From-SVN: r256358

quad-float128.h (IBM128_TYPE): Explicitly use __ibm128, instead of trying to use long double.

2018-01-08  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/quad-float128.h (IBM128_TYPE): Explicitly use
__ibm128, instead of trying to use long double.
(CVT_FLOAT128_TO_IBM128): Use TFtype instead of __float128 to
accomidate -mabi=ieeelongdouble multilibs.
(CVT_IBM128_TO_FLOAT128): Likewise.
* config/rs6000/ibm-ldouble.c (IBM128_TYPE): New macro to define
the appropriate IBM extended double type.
(__gcc_qadd): Change all occurances of long double to IBM128_TYPE.
(__gcc_qsub): Likewise.
(__gcc_qmul): Likewise.
(__gcc_qdiv): Likewise.
(pack_ldouble): Likewise.
(__gcc_qneg): Likewise.
(__gcc_qeq): Likewise.
(__gcc_qne): Likewise.
(__gcc_qge): Likewise.
(__gcc_qle): Likewise.
(__gcc_stoq): Likewise.
(__gcc_dtoq): Likewise.
(__gcc_itoq): Likewise.
(__gcc_utoq): Likewise.
(__gcc_qunord): Likewise.
* config/rs6000/_mulkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(__mulkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/_divkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(FABS): Likewise.
(__divkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/extendkftf2-sw.c (__extendkftf2_sw): Likewise.
* config/rs6000/trunctfkf2-sw.c (__trunctfkf2_sw): Likewise.

From-SVN: r256354

quad-float128.h (IBM128_TYPE): Explicitly use __ibm128, instead of trying to use long double.

2018-01-08  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/quad-float128.h (IBM128_TYPE): Explicitly use
__ibm128, instead of trying to use long double.
(CVT_FLOAT128_TO_IBM128): Use TFtype instead of __float128 to
accomidate -mabi=ieeelongdouble multilibs.
(CVT_IBM128_TO_FLOAT128): Likewise.
* config/rs6000/ibm-ldouble.c (IBM128_TYPE): New macro to define
the appropriate IBM extended double type.
(__gcc_qadd): Change all occurances of long double to IBM128_TYPE.
(__gcc_qsub): Likewise.
(__gcc_qmul): Likewise.
(__gcc_qdiv): Likewise.
(pack_ldouble): Likewise.
(__gcc_qneg): Likewise.
(__gcc_qeq): Likewise.
(__gcc_qne): Likewise.
(__gcc_qge): Likewise.
(__gcc_qle): Likewise.
(__gcc_stoq): Likewise.
(__gcc_dtoq): Likewise.
(__gcc_itoq): Likewise.
(__gcc_utoq): Likewise.
(__gcc_qunord): Likewise.
* config/rs6000/_mulkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(__mulkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/_divkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(FABS): Likewise.
(__divkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/extendkftf2-sw.c (__extendkftf2_sw): Likewise.
* config/rs6000/trunctfkf2-sw.c (__trunctfkf2_sw): Likewise.

From-SVN: r256353

expr.c (gfc_check_pointer_assign): Fix typo in comment.

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

* expr.c (gfc_check_pointer_assign): Fix typo in comment.

From-SVN: r256352

rs6000-string.c (do_load_for_compare_from_addr): New function.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

* config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
function.
(do_ifelse): New function.
(do_isel): New function.
(do_sub3): New function.
(do_add3): New function.
(do_load_mask_compare): New function.
(do_overlap_load_compare): New function.
(expand_compare_loop): New function.
(expand_block_compare): Call expand_compare_loop() when appropriate.
* config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
option description.
(-mblock-compare-inline-loop-limit): New option.

From-SVN: r256351

re PR rtl-optimization/81308 (ICE in calc_dfs_tree, at dominance.c:458)

PR rtl-optimizatin/81308
* tree-switch-conversion.c (cfg_altered): New file scoped static.
(process_switch): If group_case_labels makes a change, then set
cfg_altered.
(pass_convert_switch::execute): If a switch is converted, then
set cfg_altered.  Return TODO_cfg_cleanup if cfg_altered is true.

PR rtl-optimizatin/81308
* g++.dg/pr81308-1.C: New test.
* g++.dg/pr81308-2.C: New test.

From-SVN: r256349

re PR rtl-optimization/81308 (ICE in calc_dfs_tree, at dominance.c:458)

PR rtl-optimization/81308
* recog.c (split_all_insns): Conditionally cleanup the CFG after
splitting insns.

From-SVN: r256348

rs6000.c (rs6000_legitimate_combined_insn): Updated with the new names of the branch decrement patterns...

* config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
with the new names of the branch decrement patterns, and added the
names of the branch decrement conditional patterns.

From-SVN: r256347

PR target/83663 - Revert r255946

gcc/

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

PR target/83663 - Revert r255946
* config/aarch64/aarch64.c (aarch64_expand_vector_init): Modify code
generation for cases where splatting a value is not useful.
* simplify-rtx.c (simplify_ternary_operation): Simplify vec_merge
across a vec_duplicate and a paradoxical subreg forming a vector
mode to a vec_concat.

gcc/testsuite/

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

PR target/83663 - Revert r255946
* gcc.target/aarch64/vect-slp-dup.c: New.

From-SVN: r256346

[arm] Add -march=armv8.3-a and dotprod multilib selection rules

We don't have the t-aprofile, t-multilib and t-arm-elf mapping
rules for multilibs when using the variants of -march=armv8.3-a
and the dotproduct extension.
This patch adds them. -march=armv8.3-a behaves in the same
way as -march=armv8.2-a in this regard.

Bootstrapped and tested with the aprofile multilib list.
Checked that --print-multi-directory gives sensible results
with armv8.3-a options and extensions.
I've also added some armv8.3-a, fp16 and dotprod
combination tests to multilib.exp

* config/arm/t-aprofile (MULTILIB_MATCHES): Add mapping rules for
-march=armv8.3-a variants.
* config/arm/t-multilib: Likewise.
* config/arm/t-arm-elf: Likewise.  Handle dotprod extension.

* gcc.target/arm/multilib.exp: Add fp16, dotprod and armv8.3-a
combination tests.

From-SVN: r256345

rs6000.md (cceq_ior_compare): Remove * so I can use it to generate rtl.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

* config/rs6000/rs6000.md (cceq_ior_compare): Remove * so I can use it
to generate rtl.
(cceq_ior_compare_complement): Give it a name so I can use it, and
change boolean_or_operator predicate to boolean_operator so it can
be used to generate a crand.
(eqne): New code iterator.
(bd/bd_neg): New code_attrs.
(<bd>_<mode>): New name for ctr<mode>_internal[12] now combined into
a single define_insn.
(<bd>tf_<mode>): A new insn pattern for the conditional form branch
decrement (bdnzt/bdnzf/bdzt/bdzf).
* config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
with the new names of the branch decrement patterns, and added the
names of the branch decrement conditional patterns.

From-SVN: r256344

re PR tree-optimization/83563 ([graphite] ICE: Segmentation fault (in instantiate_scev_r))

2018-01-08  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83563
* graphite.c (canonicalize_loop_closed_ssa_form): Reset the SCEV
cache.

* gcc.dg/graphite/pr83563.c: New testcase.

From-SVN: r256343

re PR c++/83713 (ICE in do_narrow at gcc/convert.c:474)

2018-01-08  Richard Biener  <rguenther@suse.de>

PR middle-end/83713
* convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks.

* g++.dg/torture/pr83713.C: New testcase.

From-SVN: r256341

Xfail ssa-dom-cse-2.c for nvptx

2018-01-08  Tom de Vries  <tom@codesourcery.com>

* gcc.dg/tree-ssa/ssa-dom-cse-2.c: Xfail scan for nvptx.

From-SVN: r256340

re PR tree-optimization/83685 (ICE: SSA corruption)

2018-01-08  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83685
* tree-ssa-pre.c (create_expression_by_pieces): Do not insert
references to abnormals.

* gcc.dg/torture/pr83685.c: New testcase.

From-SVN: r256339

re PR lto/83719 (ICE (segfault) in hash_table<indirect_string_hasher, xcallocator>::elements())

2018-01-08  Richard Biener  <rguenther@suse.de>

PR lto/83719
* dwarf2out.c (output_indirect_strings): Handle empty
skeleton_debug_str_hash.
(dwarf2out_early_finish): Index strings for -gsplit-dwarf.

* gcc.dg/lto/pr83719_0.c: New testcase.

From-SVN: r256338

PR 78534 Regression on 32-bit targets

By switching from int to size_t in order to handle larger values,
r256322 introduced a bug that manifested itself on 32-bit
targets. Fixed by using the correct type to store the result of a
next_array_record call.

Regtested on x86_64-pc-linux-gnu and i686-pc-linux-gnu, committed to
trunk as obvious.

libgfortran/ChangeLog:

2018-01-08  Janne Blomqvist  <jb@gcc.gnu.org>

PR 78534, bugfix for r256322
* io/transfer.c (next_record_w): Use correct type for return value
of next_array_record.

From-SVN: r256337

Require stack size for some test-cases

2018-01-08  Tom de Vries  <tom@codesourcery.com>

* gcc.dg/graphite/interchange-7.c: Add dg-require-stack-size.
* gcc.dg/graphite/run-id-1.c: Same.
* gcc.dg/tree-ssa/loop-interchange-4.c: Same.

From-SVN: r256336

re PR fortran/83611 ([PDT] Assignment of parameterized types causes double free error in runtime)

2018-01-08  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/83611
* decl.c (gfc_get_pdt_instance): If parameterized arrays have
an initializer, convert the kind parameters and add to the
component if the instance.
* trans-array.c (structure_alloc_comps): Add 'is_pdt_type' and
use it with case COPY_ALLOC_COMP. Call 'duplicate_allocatable'
for parameterized arrays. Clean up typos in comments. Convert
parameterized array initializers and copy into the array.
* trans-expr.c (gfc_trans_scalar_assign): Do a deep copy for
parameterized types.
*trans-stmt.c (trans_associate_var): Deallocate associate vars
as necessary, when they are PDT function results for example.

PR fortran/83731
* trans-array.c (structure_alloc_comps): Only compare len parms
when they are declared explicitly.

2018-01-08  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/83611
* gfortran.dg/pdt_15.f03 : Bump count of 'n.data = 0B' to 8.
* gfortran.dg/pdt_26.f03 : Bump count of '_malloc' to 9.
* gfortran.dg/pdt_27.f03 : New test.

PR fortran/83731
* gfortran.dg/pdt_28.f03 : New test.

From-SVN: r256335

[ARC] Revamp trampoline implementation

The new implementation attempts to clean up the existing trampoline
implementation for ARC making it to work for linux type of systems.

gcc/
2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (TARGET_TRAMPOLINE_ADJUST_ADDRESS): Delete.
        (emit_store_direct): Likewise.
        (arc_trampoline_adjust_address): Likewise.
        (arc_asm_trampoline_template): New function.
        (arc_initialize_trampoline): Use asm_trampoline_template.
        (TARGET_ASM_TRAMPOLINE_TEMPLATE): Define.
        * config/arc/arc.h (TRAMPOLINE_SIZE): Adjust to 16.
        *config/arc/arc.md (flush_icache): Delete pattern.

From-SVN: r256334

[ARC] Enable unaligned access.

Use munaligned-access to control if we can have unaligned accesses.  For ARC
HS family unaligned access is always on.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc-c.def (__ARC_UNALIGNED__): New define.
* config/arc/arc.h (STRICT_ALIGNMENT): Control this macro using
munaligned-access.

From-SVN: r256333

Require alloca for some test-cases

2018-01-08  Tom de Vries  <tom@codesourcery.com>

* c-c++-common/builtins.c: Require effective target alloca.
* gcc.dg/Wrestrict.c: Same.
* gcc.dg/tree-ssa/loop-interchange-15.c: Same.

From-SVN: r256332

epiphany: Enable Ada run-time build

gcc/

PR target/83681
* config/epiphany/epiphany.h (make_pass_mode_switch_use): Guard
by not USED_FOR_TARGET.
(make_pass_resolve_sw_modes): Likewise.

From-SVN: r256331

nios2: Enable Ada run-time build

gcc/
* config/nios2/nios2.h (nios2_section_threshold): Guard by not
USED_FOR_TARGET.

From-SVN: r256330

re PR tree-optimization/83580 (Wrong code caused by vectorization)

2018-01-08  Richard Biener  <rguenther@suse.de>

PR middle-end/83580
* tree-data-ref.c (split_constant_offset): Remove STRIP_NOPS.

* gcc.dg/torture/pr83580.c: New testcase.

From-SVN: r256329

re PR tree-optimization/83517 (Missed optimization in math expression: (x+x)/x == 2)

2018-01-08  Richard Biener  <rguenther@suse.de>

PR middle-end/83517
* match.pd ((t * 2) / 2) -> t): Add missing :c.

* gcc.dg/pr83517.c: New testcase.

From-SVN: r256328

Daily bump.

From-SVN: r256327

libgfortran.h (GFC_DTYPE_COPY): New macro.

2018-01-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

* libgfortran.h (GFC_DTYPE_COPY): New macro.
(GFC_DTYPE_COPY_SETRANK): New macro.
(GFC_DTYPE_IS_UNSET): New macro.
* intrinsics/cshift0.c (cshift0): Use new macros.
* intrinsics/eoshift0.c (eoshift0): Likewise.
* intrinsics/eoshift2.c (eoshift2): Likewise.
* intrinsics/move_alloc.c (move_alloc): Likewise.
* intrinsics/reshape_generic.c (reshape_internal): Likewise.
* intrinsics/spread_generic.c (spread_internal): Likewise.
* intrinsics/spread_generic.c (spread_scalar): Likewise.
* intrinsics/spread_generic.c (spread_char_scalar): Likewise.
* intrinsics/spread_generic.c (spread_char4_scalar): Likewise.
* intrinsics/unpack_generic.c (unpack0): Likewise.
* intrinsics/unpack_generic.c (unpack0_char): Likewise.
* intrinsics/unpack_generic.c (unpack0_char4): Likewise.
* m4/cshift1.m4 (cshift1): Likewise.
* m4/eoshift1.m4 (eoshift1): Likewise.
* m4/eoshift3.m4 (eoshift3): Likewise.
* m4/iforeach-s.m4: Likewise.
* m4/iforeach.m4: Likewise.
* m4/ifunction-s.m4: Likewise.
* m4/ifunction-s2.m4: Likewise.
* m4/ifunction.m4: Likewise.
* m4/ifunction_logical.m4: Likewise.
* m4/reshape.m4: Likewise.
* m4/spread.m4: Likewise.
* generated/all_l1.c : Regenerated.
* generated/all_l16.c : Regenerated.
* generated/all_l2.c : Regenerated.
* generated/all_l4.c : Regenerated.
* generated/all_l8.c : Regenerated.
* generated/any_l1.c : Regenerated.
* generated/any_l16.c : Regenerated.
* generated/any_l2.c : Regenerated.
* generated/any_l4.c : Regenerated.
* generated/any_l8.c : Regenerated.
* generated/count_16_l.c : Regenerated.
* generated/count_1_l.c : Regenerated.
* generated/count_2_l.c : Regenerated.
* generated/count_4_l.c : Regenerated.
* generated/count_8_l.c : Regenerated.
* generated/cshift1_16.c : Regenerated.
* generated/cshift1_4.c : Regenerated.
* generated/cshift1_8.c : Regenerated.
* generated/eoshift1_16.c : Regenerated.
* generated/eoshift1_4.c : Regenerated.
* generated/eoshift1_8.c : Regenerated.
* generated/eoshift3_16.c : Regenerated.
* generated/eoshift3_4.c : Regenerated.
* generated/eoshift3_8.c : Regenerated.
* generated/iall_i1.c : Regenerated.
* generated/iall_i16.c : Regenerated.
* generated/iall_i2.c : Regenerated.
* generated/iall_i4.c : Regenerated.
* generated/iall_i8.c : Regenerated.
* generated/iany_i1.c : Regenerated.
* generated/iany_i16.c : Regenerated.
* generated/iany_i2.c : Regenerated.
* generated/iany_i4.c : Regenerated.
* generated/iany_i8.c : Regenerated.
* generated/iparity_i1.c : Regenerated.
* generated/iparity_i16.c : Regenerated.
* generated/iparity_i2.c : Regenerated.
* generated/iparity_i4.c : Regenerated.
* generated/iparity_i8.c : Regenerated.
* generated/maxloc0_16_i1.c : Regenerated.
* generated/maxloc0_16_i16.c : Regenerated.
* generated/maxloc0_16_i2.c : Regenerated.
* generated/maxloc0_16_i4.c : Regenerated.
* generated/maxloc0_16_i8.c : Regenerated.
* generated/maxloc0_16_r10.c : Regenerated.
* generated/maxloc0_16_r16.c : Regenerated.
* generated/maxloc0_16_r4.c : Regenerated.
* generated/maxloc0_16_r8.c : Regenerated.
* generated/maxloc0_16_s1.c : Regenerated.
* generated/maxloc0_16_s4.c : Regenerated.
* generated/maxloc0_4_i1.c : Regenerated.
* generated/maxloc0_4_i16.c : Regenerated.
* generated/maxloc0_4_i2.c : Regenerated.
* generated/maxloc0_4_i4.c : Regenerated.
* generated/maxloc0_4_i8.c : Regenerated.
* generated/maxloc0_4_r10.c : Regenerated.
* generated/maxloc0_4_r16.c : Regenerated.
* generated/maxloc0_4_r4.c : Regenerated.
* generated/maxloc0_4_r8.c : Regenerated.
* generated/maxloc0_4_s1.c : Regenerated.
* generated/maxloc0_4_s4.c : Regenerated.
* generated/maxloc0_8_i1.c : Regenerated.
* generated/maxloc0_8_i16.c : Regenerated.
* generated/maxloc0_8_i2.c : Regenerated.
* generated/maxloc0_8_i4.c : Regenerated.
* generated/maxloc0_8_i8.c : Regenerated.
* generated/maxloc0_8_r10.c : Regenerated.
* generated/maxloc0_8_r16.c : Regenerated.
* generated/maxloc0_8_r4.c : Regenerated.
* generated/maxloc0_8_r8.c : Regenerated.
* generated/maxloc0_8_s1.c : Regenerated.
* generated/maxloc0_8_s4.c : Regenerated.
* generated/maxloc1_16_i1.c : Regenerated.
* generated/maxloc1_16_i16.c : Regenerated.
* generated/maxloc1_16_i2.c : Regenerated.
* generated/maxloc1_16_i4.c : Regenerated.
* generated/maxloc1_16_i8.c : Regenerated.
* generated/maxloc1_16_r10.c : Regenerated.
* generated/maxloc1_16_r16.c : Regenerated.
* generated/maxloc1_16_r4.c : Regenerated.
* generated/maxloc1_16_r8.c : Regenerated.
* generated/maxloc1_16_s1.c : Regenerated.
* generated/maxloc1_16_s4.c : Regenerated.
* generated/maxloc1_4_i1.c : Regenerated.
* generated/maxloc1_4_i16.c : Regenerated.
* generated/maxloc1_4_i2.c : Regenerated.
* generated/maxloc1_4_i4.c : Regenerated.
* generated/maxloc1_4_i8.c : Regenerated.
* generated/maxloc1_4_r10.c : Regenerated.
* generated/maxloc1_4_r16.c : Regenerated.
* generated/maxloc1_4_r4.c : Regenerated.
* generated/maxloc1_4_r8.c : Regenerated.
* generated/maxloc1_4_s1.c : Regenerated.
* generated/maxloc1_4_s4.c : Regenerated.
* generated/maxloc1_8_i1.c : Regenerated.
* generated/maxloc1_8_i16.c : Regenerated.
* generated/maxloc1_8_i2.c : Regenerated.
* generated/maxloc1_8_i4.c : Regenerated.
* generated/maxloc1_8_i8.c : Regenerated.
* generated/maxloc1_8_r10.c : Regenerated.
* generated/maxloc1_8_r16.c : Regenerated.
* generated/maxloc1_8_r4.c : Regenerated.
* generated/maxloc1_8_r8.c : Regenerated.
* generated/maxloc1_8_s1.c : Regenerated.
* generated/maxloc1_8_s4.c : Regenerated.
* generated/maxval1_s1.c : Regenerated.
* generated/maxval1_s4.c : Regenerated.
* generated/maxval_i1.c : Regenerated.
* generated/maxval_i16.c : Regenerated.
* generated/maxval_i2.c : Regenerated.
* generated/maxval_i4.c : Regenerated.
* generated/maxval_i8.c : Regenerated.
* generated/maxval_r10.c : Regenerated.
* generated/maxval_r16.c : Regenerated.
* generated/maxval_r4.c : Regenerated.
* generated/maxval_r8.c : Regenerated.
* generated/minloc0_16_i1.c : Regenerated.
* generated/minloc0_16_i16.c : Regenerated.
* generated/minloc0_16_i2.c : Regenerated.
* generated/minloc0_16_i4.c : Regenerated.
* generated/minloc0_16_i8.c : Regenerated.
* generated/minloc0_16_r10.c : Regenerated.
* generated/minloc0_16_r16.c : Regenerated.
* generated/minloc0_16_r4.c : Regenerated.
* generated/minloc0_16_r8.c : Regenerated.
* generated/minloc0_16_s1.c : Regenerated.
* generated/minloc0_16_s4.c : Regenerated.
* generated/minloc0_4_i1.c : Regenerated.
* generated/minloc0_4_i16.c : Regenerated.
* generated/minloc0_4_i2.c : Regenerated.
* generated/minloc0_4_i4.c : Regenerated.
* generated/minloc0_4_i8.c : Regenerated.
* generated/minloc0_4_r10.c : Regenerated.
* generated/minloc0_4_r16.c : Regenerated.
* generated/minloc0_4_r4.c : Regenerated.
* generated/minloc0_4_r8.c : Regenerated.
* generated/minloc0_4_s1.c : Regenerated.
* generated/minloc0_4_s4.c : Regenerated.
* generated/minloc0_8_i1.c : Regenerated.
* generated/minloc0_8_i16.c : Regenerated.
* generated/minloc0_8_i2.c : Regenerated.
* generated/minloc0_8_i4.c : Regenerated.
* generated/minloc0_8_i8.c : Regenerated.
* generated/minloc0_8_r10.c : Regenerated.
* generated/minloc0_8_r16.c : Regenerated.
* generated/minloc0_8_r4.c : Regenerated.
* generated/minloc0_8_r8.c : Regenerated.
* generated/minloc0_8_s1.c : Regenerated.
* generated/minloc0_8_s4.c : Regenerated.
* generated/minloc1_16_i1.c : Regenerated.
* generated/minloc1_16_i16.c : Regenerated.
* generated/minloc1_16_i2.c : Regenerated.
* generated/minloc1_16_i4.c : Regenerated.
* generated/minloc1_16_i8.c : Regenerated.
* generated/minloc1_16_r10.c : Regenerated.
* generated/minloc1_16_r16.c : Regenerated.
* generated/minloc1_16_r4.c : Regenerated.
* generated/minloc1_16_r8.c : Regenerated.
* generated/minloc1_16_s1.c : Regenerated.
* generated/minloc1_16_s4.c : Regenerated.
* generated/minloc1_4_i1.c : Regenerated.
* generated/minloc1_4_i16.c : Regenerated.
* generated/minloc1_4_i2.c : Regenerated.
* generated/minloc1_4_i4.c : Regenerated.
* generated/minloc1_4_i8.c : Regenerated.
* generated/minloc1_4_r10.c : Regenerated.
* generated/minloc1_4_r16.c : Regenerated.
* generated/minloc1_4_r4.c : Regenerated.
* generated/minloc1_4_r8.c : Regenerated.
* generated/minloc1_4_s1.c : Regenerated.
* generated/minloc1_4_s4.c : Regenerated.
* generated/minloc1_8_i1.c : Regenerated.
* generated/minloc1_8_i16.c : Regenerated.
* generated/minloc1_8_i2.c : Regenerated.
* generated/minloc1_8_i4.c : Regenerated.
* generated/minloc1_8_i8.c : Regenerated.
* generated/minloc1_8_r10.c : Regenerated.
* generated/minloc1_8_r16.c : Regenerated.
* generated/minloc1_8_r4.c : Regenerated.
* generated/minloc1_8_r8.c : Regenerated.
* generated/minloc1_8_s1.c : Regenerated.
* generated/minloc1_8_s4.c : Regenerated.
* generated/minval1_s1.c : Regenerated.
* generated/minval1_s4.c : Regenerated.
* generated/minval_i1.c : Regenerated.
* generated/minval_i16.c : Regenerated.
* generated/minval_i2.c : Regenerated.
* generated/minval_i4.c : Regenerated.
* generated/minval_i8.c : Regenerated.
* generated/minval_r10.c : Regenerated.
* generated/minval_r16.c : Regenerated.
* generated/minval_r4.c : Regenerated.
* generated/minval_r8.c : Regenerated.
* generated/norm2_r10.c : Regenerated.
* generated/norm2_r16.c : Regenerated.
* generated/norm2_r4.c : Regenerated.
* generated/norm2_r8.c : Regenerated.
* generated/parity_l1.c : Regenerated.
* generated/parity_l16.c : Regenerated.
* generated/parity_l2.c : Regenerated.
* generated/parity_l4.c : Regenerated.
* generated/parity_l8.c : Regenerated.
* generated/product_c10.c : Regenerated.
* generated/product_c16.c : Regenerated.
* generated/product_c4.c : Regenerated.
* generated/product_c8.c : Regenerated.
* generated/product_i1.c : Regenerated.
* generated/product_i16.c : Regenerated.
* generated/product_i2.c : Regenerated.
* generated/product_i4.c : Regenerated.
* generated/product_i8.c : Regenerated.
* generated/product_r10.c : Regenerated.
* generated/product_r16.c : Regenerated.
* generated/product_r4.c : Regenerated.
* generated/product_r8.c : Regenerated.
* generated/reshape_c10.c : Regenerated.
* generated/reshape_c16.c : Regenerated.
* generated/reshape_c4.c : Regenerated.
* generated/reshape_c8.c : Regenerated.
* generated/reshape_i16.c : Regenerated.
* generated/reshape_i4.c : Regenerated.
* generated/reshape_i8.c : Regenerated.
* generated/reshape_r10.c : Regenerated.
* generated/reshape_r16.c : Regenerated.
* generated/reshape_r4.c : Regenerated.
* generated/reshape_r8.c : Regenerated.
* generated/spread_c10.c : Regenerated.
* generated/spread_c16.c : Regenerated.
* generated/spread_c4.c : Regenerated.
* generated/spread_c8.c : Regenerated.
* generated/spread_i1.c : Regenerated.
* generated/spread_i16.c : Regenerated.
* generated/spread_i2.c : Regenerated.
* generated/spread_i4.c : Regenerated.
* generated/spread_i8.c : Regenerated.
* generated/spread_r10.c : Regenerated.
* generated/spread_r16.c : Regenerated.
* generated/spread_r4.c : Regenerated.
* generated/spread_r8.c : Regenerated.
* generated/sum_c10.c : Regenerated.
* generated/sum_c16.c : Regenerated.
* generated/sum_c4.c : Regenerated.
* generated/sum_c8.c : Regenerated.
* generated/sum_i1.c : Regenerated.
* generated/sum_i16.c : Regenerated.
* generated/sum_i2.c : Regenerated.
* generated/sum_i4.c : Regenerated.
* generated/sum_i8.c : Regenerated.
* generated/sum_r10.c : Regenerated.
* generated/sum_r16.c : Regenerated.
* generated/sum_r4.c : Regenerated.
* generated/sum_r8.c : Regenerated.

From-SVN: r256323

PR 78534, 83704 Handle large formatted I/O

In order to handle large characters when doing formatted I/O, use
size_t and ptrdiff_t for lengths.  Compared to the previous patch,
based on discussions on IRC use size_t for sizes that don't need to be
negative rather than ptrdiff_t everywhere.

Regtested on x86_64-pc-linux-gnu, approved as part of the PR 78534
approval, committed to trunk.

libgfortran/ChangeLog:

2018-01-07  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/78534
PR fortran/83704
* io/fbuf.c (fbuf_init): Use size_t instead of int for length.
(fbuf_debug): Convert debug output to unsigned long.
(fbuf_reset): Use ptrdiff_t for return value.
(fbuf_alloc): Use size_t for length argument.
(fbuf_flush): Handle large buffers.
(fbuf_flush_list): Likewise.
(fbuf_seek): Use ptrdiff_t for offset and return value.
(fbuf_read): Use size_t for length argument.
(fbuf_getc_refill): Use size_t to match fbuf_read.
* io/fbuf.h (struct fbuf): Use size_t for lengths.
(fbuf_init): Use size_t instead of int for length.
(fbuf_reset): Use ptrdiff_t for return value.
(fbuf_alloc): Use size_t for length argument.
(fbuf_seek): Use ptrdiff_t for offset and return value.
(fbuf_read): Use size_t for length argument.
* io/io.h (read_block_form): Likewise.
(read_block_form4): Likewise.
(write_block): Likewise.
(read_a): Likewise.
(read_a_char4): Likewise.
(read_x): Likewise.
(write_a): Likewise.
(write_a_char4): Likewise.
* io/list_read.c (list_formatted_read_scalar): Use size_t to
handle large buffers.
* io/read.c (read_l): Likewise.
(read_utf8): Likewise.
(read_utf8_char1): Likewise.
(read_default_char1): Likewise.
(read_utf8_char4): Likewise.
(read_default_char4): Likewise.
(read_a): Likewise.
(read_a_char4): Likewise.
(eat_leading_spaces): Likewise.
(next_char): Likewise.
(read_decimal): Likewise.
(read_radix): Likewise.
(read_f): Likewise.
(read_x): Likewise.
* io/transfer.c (read_sf_internal): Likewise.
(read_sf): Likewise.
(read_block_form): Likewise.
(read_block_form4): Likewise.
(write_block): Likewise.
(formatted_transfer_scalar_write): Likewise.
(next_record_w): Likewise.
* io/unix.c (mem_alloc_r): Likewise.
(mem_alloc_r4): Likewise.
(mem_alloc_w): Likewise.
(mem_alloc_w4): Likewise.
(mem_read): Likewise.
(mem_read4): Likewise.
(mem_write): Likewise.
(mem_write4): Likewise.
(open_internal): Likewise.
(open_internal4): Likewise.
* io/unix.h (open_internal): Likewise.
(open_internal4): Likewise.
(mem_alloc_w): Likewise.
(mem_alloc_r): Likewise.
(mem_alloc_w4): Likewise.
(mem_alloc_r4): Likewise.
* io/write.c (write_check_cc): Likewise.
(write_cc): Likewise.
(write_a): Likewise.
(write_a_char4): Likewise.

From-SVN: r256322

Commit right version

From-SVN: r256321

re PR middle-end/81897 (spurious -Wmaybe-uninitialized warning)

PR middle-end/81897
* tree-ssa-uninit.c (compute_control_dep_chain): Do not bail on
basic blocks with a small number of successors.
(convert_control_dep_chain_into_preds): Improve handling of
forwarder blocks.
(dump_predicates): Split apart into...
(dump_pred_chain): ...here...
(dump_pred_info): ...and here.
(can_one_predicate_be_invalidated_p): Add debugging printfs.
(can_chain_union_be_invalidated_p): Improve check for invalidation
of paths.
(uninit_uses_cannot_happen): Avoid unnecessary if
convert_control_dep_chain_into_preds yielded nothing.

PR middle-end/81897
* gcc.dg/uninit-pr81897.c: New test.

From-SVN: r256320

re PR tree-optimization/83640 (ICE in generic_overlap, at gimple-ssa-warn-restrict.c:814)

2018-01-06  Martin Sebor  <msebor@redhat.com>

PR tree-optimization/83640
* gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Avoid
subtracting negative offset from size.
(builtin_access::overlap): Adjust offset bounds of the access to fall
within the size of the object if possible.

PR tree-optimization/83640
* gcc.dg/Wrestrict-6.c: New test.
* gcc.dg/pr83640.c: New test.

From-SVN: r256319

re PR middle-end/83699 (Many 64-bit SPARC gcc.dg/vect tests FAIL)

PR rtl-optimization/83699
* expmed.c (extract_bit_field_1): Restrict the vector usage of
extract_bit_field_as_subreg to cases in which the extracted
value is also a vector.

From-SVN: r256318

Daily bump.

From-SVN: r256317

Remove unused variable

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

        * io/write.c (namelist_write): Remove unused variable "i".

From-SVN: r256314

PR 83704 Use size_t in write_character

For printing long characters, we need to use size_t instead of int in
the argument to write_character.

Regtested on x86_64-pc-linux-gnu, approved in the PR, committed to
trunk.

libgfortran/ChangeLog:

2018-01-06  Dominique d'Humieres  <dominiq@lps.ens.fr>
    Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/83704
* io/write.c (write_character): Use size_t instead of int for
length.

Co-Authored-By: Janne Blomqvist <jb@gcc.gnu.org>
From-SVN: r256313

Tighten LRA cycling check

LRA has code to try to prevent cycling, by avoiding reloads that
look too similar to the instruction being reloaded.  E.g. if we
have a R<-C move for some constant C, reloading the source with
another R<-C move is unlikely to be a good idea.

However, this safeguard unnecessarily triggered in tests like
the one in the patch.  We started with instructions like:

(insn 12 9 13 5 (set (reg:DI 0 x0)
        (reg/f:DI 459)) "reg-alloc-1.c":18 47 {*movdi_aarch64}
     (expr_list:REG_EQUAL (symbol_ref:DI ("x00") [flags 0xc0]  <var_decl 0x7f3c03c1f510 x00>)
        (nil)))

where r459 didn't get allocated a register and is equivalent to
constant x00.  LRA would then handle it like this:

Changing pseudo 459 in operand 1 of insn 12 on equiv `x00'
            1 Non-pseudo reload: reject+=2
            1 Non input pseudo reload: reject++
------->    Cycle danger: overall += LRA_MAX_REJECT
          alt=0,overall=609,losers=1,rld_nregs=1
[...]
          alt=13,overall=9,losers=1,rld_nregs=1
[...]
         Choosing alt 13 in insn 12:  (0) r  (1) w {*movdi_aarch64}

In other words, to avoid loading the constant x00 into another GPR,
LRA decided instead to move it into a floating-point register,
then move that floating-point register into x0:

      Creating newreg=630, assigning class FP_REGS to r630
      Set class ALL_REGS for r631
   12: x0:DI=r630:DI
      REG_EQUAL `x00'
    Inserting insn reload before:
  815: r631:DI=high(`x00')
  816: r630:DI=r631:DI+low(`x00')
      REG_EQUAL `x00'

That's inefficient and doesn't really help to resolve a cycling
problem, since the r630 destination of 816 needs to be reloaded into
a GPR anyway.

The cycling check already had an exception for source values that are
the result of an elimination.  This patch extends it to include the
result of equivalence substitution.

2018-01-06  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* lra-constraints.c (process_alt_operands): Test for the equivalence
substitutions when detecting a possible reload cycle.

gcc/testsuite/
* gcc.target/aarch64/reg-alloc-1.c: New test.

From-SVN: r256312

PR 78534 libgfortran ChangeLog

The libgfortran/ChangeLog entry was accidentally not included in
r256284.

From-SVN: r256311

PR 50892 Latent bug in char pointer assignment

Due to r256284 (PR 78534) there was a latent bug that reared it's head
due to different character length types in the pointer
assignment. Fixed by this patch, which also adds a reduced testcase.

Regtested on x86_64-pc-linux-gnu, committed to trunk as obvious.

gcc/fortran/ChangeLog:

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/50892
* trans-expr.c (gfc_trans_pointer_assignment): fold_convert rhs to
lhs type.

gcc/testsuite/ChangeLog:

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/50892
* gfortran.dg/char_pointer_assign_icb_1.f90: New test.

From-SVN: r256310

re PR debug/83480 (ICE in create_block_for_bookkeeping, at sel-sched.c:4557)

PR debug/83480
* toplev.c (process_options): Don't enable debug_nonbind_markers_p
by default if flag_selective_schedling{,2}.  Formatting fixes.

* gcc.dg/pr83480.c: New test.

From-SVN: r256309

re PR rtl-optimization/83682 (ICE in simplify_subreg, at simplify-rtx.c:6296)

PR rtl-optimization/83682
* rtl.h (const_vec_duplicate_p): Only return true for VEC_DUPLICATE
if it has non-VECTOR_MODE element mode.
(vec_duplicate_p): Likewise.

* gcc.target/i386/pr83682.c: New test.

From-SVN: r256308

re PR debug/83694 (New test case gcc.dg/pr83666.c from r256232 ICEs)

PR middle-end/83694
* cfgexpand.c (expand_debug_expr): Punt if mode1 is VOIDmode
and bitsize might be greater than MAX_BITSIZE_MODE_ANY_INT.

From-SVN: r256307