[Patch AArch64] Fixup floating point division with -march=armv8-a+nosimd

The canonical examples is :

    double
    foo (double x, double y)
      {
        return x / y;
      }

    with -march=armv8-a+nosimd

generates a function that calls __divdf3. Ofcourse on AArch64 we don't
have any software floating point and this causes issues.

There is also a problem in +nosimd that has existed since the dawn of
time in the port with respect to long doubles (128 bit floating
point), here the ABI and the compiler expect the presence of the SIMD
unit as these parameters are passed in the vector registers. Thus
while +nosimd tries to prevent the use of SIMD instructions in the
compile we don't get this right as we end up using ldr qN / str qN
instructions and even there I think things go wrong in a simple
example that I tried.

Is that sufficient to consider marking +nosimd as deprecated in GCC-8
and remove this in a future release ?

That is not a subject for this patch but something separate but I
would like to put this into trunk and the release
branches. Bootstrapped and regression tested on my aarch64 desktop.

Ok ?

From-SVN: r255194

re PR rtl-optimization/81020 (wrong code with -O -fno-tree-bit-ccp -fno-tree-coalesce-vars -fno-tree-vrp)

PR rtl-optimization/81020
* gcc.dg/pr81020.c: New test.

From-SVN: r255193

tree.def (SWITCH_EXPR): Change from 3 operand to 2 operand tree.

* tree.def (SWITCH_EXPR): Change from 3 operand to 2 operand tree.
Adjust comment.
* tree.h (SWITCH_LABELS): Remove.
* gimplify.c (gimplify_switch_expr): Don't test SWITCH_LABELS,
assert SWITCH_BODY is non-NULL.
* tree-pretty-print.c (dump_generic_node): Remove SWITCH_LABELS
handling.
* tree.c (block_may_fallthru): Always return true; for SWITCH_EXPR.
c/
* c-typeck.c (c_start_case): Build SWITCH_EXPR using build2 instead
of build3.
cp/
* cp-gimplify.c (genericize_switch_stmt): Build SWITCH_EXPR using
build2_loc instead of build3_loc.
ada/
* gcc-interface/trans.c (Case_Statement_to_gnu): Build SWITCH_EXPR
using build2 instead of build3.
jit/
* jit-playback.c (add_switch): Build SWITCH_EXPR using build2 instead
of build3.  Formatting fixes.  Adjust funciton comment.
fortran/
* trans-decl.c (gfc_trans_entry_master_switch): Build SWITCH_EXPR
using fold_build2_loc instead of fold_build3_loc.
* trans-io.c (io_result): Likewise.
* trans-stmt.c (gfc_trans_integer_select, gfc_trans_character_select):
Likewise.
go/
* go-gcc.cc (Gcc_backend::switch_statement): Build SWITCH_EXPR using
build2_loc instead of build3_loc.
brig/
* brigfrontend/brig-branch-inst-handler.cc
(brig_branch_inst_handler::operator): Build SWITCH_EXPR using build2
instead of build3.

From-SVN: r255192

re PR tree-optimization/80788 (ICE in set_value_range, at tree-vrp.c:252)

PR tree-optimization/80788
* match.pd (X +- C1 CMP C2 -> X CMP C2 -+ C1): If res
has TREE_OVERFLOW set, call drop_tree_overflow.

* gcc.dg/pr80788.c: New test.

From-SVN: r255191

re PR target/83158 (gcc.target/i386/pr78057.c fail)

2017-11-28  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83158
* tree-vrp.c (intersect_ranges): Prefer ~[0, 0] in a few more
cases.

From-SVN: r255190

* MAINTAINERS (write after approval): Add myself.

From-SVN: r255189

rs6000: Improve comparison rtx_cost (PR81288)

The current rs6000 rtx_cost for comparisons against 0 is very high if
TARGET_ISEL && !TARGET_MFCRF, much higher than for reg-reg comparisons,
much higher than a load of 0 and such a reg-reg-comparison.  This leads
to infinite recursion in CSE (see PR81288).

This patch removes the too-high cost, also simplifying this code.

PR 81288/target
* config/rs6000/rs6000.c (rs6000_rtx_costs): Do not handle
TARGET_ISEL && !TARGET_MFCRF differently.  Simplify code.

From-SVN: r255188

rs6000: Improve scc isel

If we have a negative condition we can use a literal 0 in the isel,
instead of having to load it into a register.  If the condition is from
a comparison with an immediate we can change e.g. LT to LE and adjust
the immediate, saving a li instruction.

* config/rs6000/rs6000.md (<code><GPR:mode><GPR2:mode>2_isel): Change
LT/GT/LTU/GTU to LE/GE/LEU/GEU where possible.

From-SVN: r255186

Daily bump.

From-SVN: r255185

PR c++/83058 - ICE on C++ code with negative array index: in warn_placement_new_too_small

gcc/cp/ChangeLog:

PR c++/83058
* init.c (warn_placement_new_too_small): Use offset_int instead of
HOST_WIDE_INT.

gcc/testsuite/ChangeLog:

PR c++/83058
* g++.dg/warn/Wplacement-new-size-5.C: New test.

From-SVN: r255182

re PR c++/81888 (Structured bindings stopped working)

PR c++/81888
* parser.c (cp_parser_decomposition_declaration): Reject just
BRACE_ENCLOSED_INITIALIZER_P initializers with nelts != 1 rather
than all such CONSTRUCTORs, and only if is_direct_init is true.

* g++.dg/cpp1z/decomp30.C: Add a test for structured binding with
= {} and = { a, a } initializers.
* g++.dg/cpp1z/decomp31.C: New test.

From-SVN: r255180

pt.c (primary_template_specialization_p): Rename from

* pt.c (primary_template_specialization_p): Rename from

primary_template_instantiation_p.  Don't check
DECL_TEMPLATE_INSTANTIATION.
* call.c, cp-tree.h, decl2.c: Adjust.

From-SVN: r255179

[gcc]
2017-11-27  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR middle_end/82333
* varasm.c (compare_constant): Take the mode of the constants into
account when comparing floating point constants.

[gcc/testsuite]
2017-11-27  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR middle_end/82333
* gcc.target/powerpc/pr82333.c: New test.

From-SVN: r255177

Add missing noexcept in string_view::find_first_of declaration

2017-11-27  Stephan Bergmann  <sbergman@redhat.com>

* include/std/string_view (basic_string_view::find_first_of): Add
missing noexcept.

From-SVN: r255176

hash-set.h (DEFINE_DEBUG_HASH_SET): Remove static qualifier from explicit instantiation of debug_helper.

* hash-set.h (DEFINE_DEBUG_HASH_SET): Remove static qualifier
from explicit instantiation of debug_helper.
* vec.h (DEFINE_DEBUG_VEC): Ditto.

From-SVN: r255175

Fix std::unordered_map deduction guide

2017-11-27  Stephan Bergmann  <sbergman@redhat.com>

* include/bits/unordered_map.h (unordered_map): Fix deduction guide.
* include/debug/unordered_map (unordered_map): Likewise.

From-SVN: r255174

gimple-fold.c (gimple_fold_builtin_memory_op): Remove dead code, refactor a bit.

2017-11-27  Richard Biener  <rguenther@suse.de>

* gimple-fold.c (gimple_fold_builtin_memory_op): Remove dead code,
refactor a bit.

From-SVN: r255172

tree.c (wide_int_to_tree): Free discarded INTEGER_CST.

2017-11-27  Richard Biener  <rguenther@suse.de>

* tree.c (wide_int_to_tree): Free discarded INTEGER_CST.
(type_hash_canon): Also clear int_cst_hash_table entry for
TYPE_MIN/MAX_VALUE.
(build_nonstandard_integer_type): Hash all TYPE_MAX_VALUEs.

From-SVN: r255171

extend.texi: Add -A suffix (ARMv8*-A, ARMv7-A).

2017-11-27  Tamar Christina  <tamar.christina@arm.com>

* doc/extend.texi: Add -A suffix (ARMv8*-A, ARMv7-A).
* doc/invoke.texi: Add -A suffix (ARMv8*-A, ARMv7-A).
* doc/sourcebuild.texi: Add -A suffix (ARMv8*-A, ARMv7-A).

From-SVN: r255169

re PR c++/81675 (attribute(noreturn) of destructor in :? not honored)

PR c++/81675
* cp-gimplify.c (cp_fold) <case COND_EXPR>: Don't return immediately
for VOID_TYPE_P COND_EXPRs, instead fold the operands and if op0 is
INTEGER_CST, ensure that both op1 and op2 are non-NULL and fall
through into normal folding, otherwise just rebuild x if any op
changed.

* g++.dg/warn/pr81675.C: New test.

From-SVN: r255167

Fix UB in hash-map.h

bootstrap-ubsan shows:
  gcc/hash-map.h:277:19: runtime error: member access within null pointer of type 'struct hash_map'

Fix the issue by returning early.

From-SVN: r255166

cfgloop.h (struct loop): Document usage of USHRT_MAX for unroll.

* cfgloop.h (struct loop): Document usage of USHRT_MAX for unroll.
* loop-unroll.c (decide_unroll_constant_iterations): Implement it.
(decide_unroll_runtime_iterations): Likewise.
(decide_unroll_stupid): Likewise.

From-SVN: r255165

Fix code generation for buildtin_longjmp with CET.

According to the description of  inssp instruction from Intel CET it
adusts the shadow stack pointer (ssp) only by value in the range of
[0..255]. As a number of adjustment could be greater than 255 there
should be a loop generated to adjust ssp.

gcc/
* config/i386/i386.md: Add a loop with incssp.
* testsuite/gcc.target/i386/cet-sjlj-1.c: Fix test.
* testsuite/gcc.target/i386/cet-sjlj-4.c: Likewise.

From-SVN: r255164

[PR 81248] Fix ipa-sra size check

2017-11-27  Martin Jambor  <mjambor@suse.cz>

PR tree-optimization/81248
* tree-sra.c (splice_param_accesses): Remove size check.
(decide_one_param_reduction): Fix size check.
* gimple-pretty-print.c (dump_profile): Silence warning.
* params.def (PARAM_IPA_SRA_PTR_GROWTH_FACTOR): Adjust description.

testsuite/
* g++.dg/ipa/pr81248.C: New test.
* gcc.dg/tree-ssa/ssa-pre-31.c: Disable IPA-SRA.
* gcc/testsuite/gcc.dg/ipa/ipcp-cstagg-2.c: Likewise.

From-SVN: r255163

null-8.C (bar): New function.

* g++.dg/ubsan/null-8.C (bar): New function.
(foo): Use bar instead of __builtin_printf.

From-SVN: r255162

re PR debug/81307 (g++.dg/debug/debug9.C -gstabs FAILs)

PR debug/81307
* dbxout.c (lastlineno): New variable.
(dbx_debug_hooks): Use dbxout_switch_text_section as
switch_text_section debug hook.
(dbxout_function_end): Switch to current_function_section
rather than function_section.  If crtl->has_bb_partition,
output just one N_FUN, depending on in_cold_section_p.
(dbxout_source_line): Remember last lineno in lastlineno.
(dbxout_switch_text_section): New function.
(dbxout_function_decl): Adjust dbxout_block caller.
(dbx_block_with_cold_children): New function.
(dbxout_block): Return true if any LBRAC/RBRAC have been
emitted.  Use dbx_block_with_cold_children at depth == 0
in second partition.  Add PARENT_BLOCKNUM argument, pass
it optionally adjusted to children.  Output LBRAC/RBRAC
around recursive call only if the block is in the current
partition, if not and anything was output, emit empty
range LBRAC/RBRAC.
* final.c (final_scan_insn): Compute cold_function_name
before calling switch_text_section debug hook.  Call
that hook even if dwarf2out_do_frame if not emitting
dwarf debug info.

* g++.dg/debug/debug9.C: Remove -fno-reorder-blocks-and-partition
workaround.

From-SVN: r255161

re PR target/83100 (powerpc: internal compiler error: in get_variable_section, at varasm.c:1150 with -fdata-sections)

PR target/83100
* varasm.c (bss_initializer_p): Return true for DECL_COMMON
TREE_READONLY decls.

* gcc.dg/pr83100-1.c: New test.
* gcc.dg/pr83100-2.c: New test.
* gcc.dg/pr83100-3.c: New test.
* gcc.dg/pr83100-4.c: New test.

From-SVN: r255160

Fix PR82488 - signed integer overflow in expr.c

bootstrap-ubsan shows:
 gcc/expr.c:4103:17: runtime error: signed integer overflow: 0 - -9223372036854775808 cannot be represented in type 'long int'

Fix by handling the saw_unknown case earlier.

PR rtl-optimization/82488
* expr.c (fixup_args_size_notes): Avoid signed integer overflow.

diff --git a/gcc/expr.c b/gcc/expr.c
index ee07de5aaa44..e9d8555c9452 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -4100,10 +4100,13 @@ fixup_args_size_notes (rtx_insn *prev, rtx_insn *last, int end_args_size)
       if (STACK_GROWS_DOWNWARD)
  this_delta = -(unsigned HOST_WIDE_INT) this_delta;

-      args_size -= this_delta;
+      if (saw_unknown)
+ args_size = INT_MIN;
+      else
+ args_size -= this_delta;
     }

-  return saw_unknown ? INT_MIN : args_size;
+  return args_size;
 }

 #ifdef PUSH_ROUNDING
--
Markus

From-SVN: r255159

Daily bump.

From-SVN: r255158

i386.c (processor_target_table): Add skylake_cost for skylake-avx512.

* config/i386/i386.c (processor_target_table): Add skylake_cost for
skylake-avx512.
* config/i386/x86-tune-costs.h (skylake_memcpy, skylake_memset,
skylake_cost): New.

* config/i386/driver-i386.c (host_detect_local_cpu):
Detect skylake-avx512.

* config.gcc: Add -march=cannonlake.
* config/i386/driver-i386.c (host_detect_local_cpu): Detect cannonlake.
* config/i386/i386-c.c (ix86_target_macros_internal): Handle cannonlake.
* config/i386/i386.c (processor_costs): Add m_CANNONLAKE.
(PTA_CANNONLAKE): New.
(processor_target_table): Add cannonlake.
(ix86_option_override_internal): Ditto.
(fold_builtin_cpu): Ditto.
(get_builtin_code_for_version): Handle cannonlake.
(M_INTEL_COREI7_CANNONLAKE): New.
* config/i386/i386.h (TARGET_CANNONLAKE, PROCESSOR_CANNONLAKE): New.
* doc/invoke.texi: Add -march=cannonlake.

gcc/testsuite/

* gcc.target/i386/funcspec-56.inc: Handle new march.
* g++.dg/ext/mv16.C: Ditto.

libgcc/

* config/i386/cpuinfo.c (get_intel_cpu): Handle cannonlake.
* config/i386/cpuinfo.h (processor_subtypes): Add
INTEL_COREI7_CANNONLAKE.

From-SVN: r255155

Plugin support on Windows/MinGW

config/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

* gcc-plugin.m4: Add support for MinGW.

gcc/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

* plugin.c (add_new_plugin): Use platform-specific library extensions.
(try_init_one_plugin): Alternative implementation for MinGW.
* Makefile.in (plugin_implib): New.
(gengtype-lex.c): Fix broken AIX workaround.
* configure: Regenerate.
* doc/plugins.texi: Document support for MinGW.

gcc/c/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

* Make-lang.in (c.install-plugin): Install backend import library.

gcc/cp/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

* Make-lang.in (c++.install-plugin): Install backend import library.

libcc1/ChangeLog:
2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

* configure: Regenerate.

From-SVN: r255154

Daily bump.

From-SVN: r255153

re PR rtl-optimization/81553 (ICE in immed_wide_int_const, at emit-rtl.c:607)

PR rtl-optimization/81553
* combine.c (simplify_if_then_else): In (if_then_else COND (OP Z C1) Z)
to (OP Z (mult COND (C1 * STORE_FLAG_VALUE))) optimization, if OP
is a shift where C1 has different mode than the whole shift, use C1's
mode for MULT rather than the shift's mode.

* gcc.c-torture/compile/pr81553.c: New test.

From-SVN: r255150

structret1.C (FrameworkObject::action): Return a value.

* g++.dg/abi/structret1.C (FrameworkObject::action): Return a
value.

From-SVN: r255149

re PR target/82848 (ICE in expand_expr_real_2, at expr.c:8715)

PR target/82848
* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Don't fold
builtins not enabled in the currently selected ISA.

* gcc.target/powerpc/pr82848.c: New test.

From-SVN: r255148

Daily bump.

From-SVN: r255147

re PR fortran/81304 (Bogus warning with -Wsurprising and -fopenmp: Type specified for intrinsic function 'min' / 'max')

PR fortran/81304
* trans-openmp.c (gfc_trans_omp_array_reduction_or_udr): Set
attr.implicit_type in intrinsic_sym to avoid undesirable warning.

* testsuite/libgomp.fortran/pr81304.f90: New test.

From-SVN: r255144

Factor out division by squares

This patch implements the some of the division optimizations discussed in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71026.

The division reciprocal optimization now handles divisions by squares:

     x / (y * y) -> x  * (1 / y) * (1 / y)

This requires at least one more division by y before it triggers - the
3 divisions of (1/ y) are then CSEd into a single division.  Overall
this changes 1 division into 1 multiply, which is generally much faster.

2017-11-24  Jackson Woodruff  <jackson.woodruff@arm.com>

    gcc/
PR tree-optimization/71026
* tree-ssa-math-opts (is_division_by_square, is_square_of): New.
(insert_reciprocals): Change to insert reciprocals before a division
by a square and to insert the square of a reciprocal.
(execute_cse_reciprocals_1): Change to consider division by a square.
(register_division_in): Add importance parameter.

    testsuite/
PR tree-optimization/71026
* gfortran.dg/extract_recip_1.f: New test.
* gcc.dg/extract_recip_3.c: New test.
* gcc.dg/extract_recip_4.c: New test.

From-SVN: r255141

re PR tree-optimization/82402 (error: SSA_NAME_OCCURS_IN_ABNORMAL_PHI should be set)

2017-11-24  Richard Biener  <rguenther@suse.de>

PR tree-optimization/82402
* tree-vect-loop-manip.c (create_lcssa_for_virtual_phi): Properly
set SSA_NAME_OCCURS_IN_ABNORMAL_PHI.

* gcc.dg/torture/pr82402.c: New testcase.

From-SVN: r255140

Simplify 0 - ptr.

2017-11-24  Marc Glisse  <marc.glisse@inria.fr>

* match.pd (0-ptr): New transformation.

From-SVN: r255139

re PR bootstrap/83015 (bootstrap comparison failure on ia64)

PR bootstrap/83015
* ipa-inline.c (inline_small_functions): Set current badnes correctly
when skipping checking.

From-SVN: r255138

Whitespace fix for libgfortran/ChangeLog

From-SVN: r255137

re PR tree-optimization/83128 (Unable to optimize {m,c}alloc when strings builtin are used)

2017-11-24  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83128
* tree-ssa-sccvn.c (fully_constant_vn_reference_p): Handle STRING_CSTs.
(vn_reference_lookup_3): Likewise.

* gcc.dg/tree-ssa/ssa-fre-62.c: New testcase.

From-SVN: r255136

PR 36313 Replace int with gfc_charlen_type, take 3

Still some prototypes that didn't match the implementation.

2017-11-24  Janne Blomqvist  <jb@gcc.gnu.org>
        PR fortran/36313
        * m4/maxloc2s.m4: Replace int with gfc_charlen_type, take 3.
        * m4/minloc2s.m4: Likewise.
        * generated/maxloc2_16_s1.c: Regenerated.
        * generated/maxloc2_16_s4.c: Regenerated.
        * generated/maxloc2_4_s1.c: Regenerated.
        * generated/maxloc2_4_s4.c: Regenerated.
        * generated/maxloc2_8_s1.c: Regenerated.
        * generated/maxloc2_8_s4.c: Regenerated.
        * generated/minloc2_16_s1.c: Regenerated.
        * generated/minloc2_16_s4.c: Regenerated.
        * generated/minloc2_4_s1.c: Regenerated.
        * generated/minloc2_4_s4.c: Regenerated.
        * generated/minloc2_8_s1.c: Regenerated.
        * generated/minloc2_8_s4.c: Regenerated.

From-SVN: r255135

re PR sanitizer/83014 (ICE in pretty-print with -fsanitize=bounds)

PR sanitizer/83014
* ubsan.c (ubsan_type_descriptor): Use pp_unsigned_wide_integer
instead of pp_printf with HOST_WIDE_INT_PRINT_DEC.  Avoid calling
tree_to_uhwi twice.

* gcc.dg/ubsan/pr83014.c: New test.

From-SVN: r255134

tree-object-size.c (pass_through_call): Use gimple_call_return_flags ERF_RETURN*ARG* for builtins other than...

* tree-object-size.c (pass_through_call): Use gimple_call_return_flags
ERF_RETURN*ARG* for builtins other than BUILT_IN_ASSUME_ALIGNED,
check for the latter with gimple_call_builtin_p.  Do not handle
BUILT_IN_STPNCPY_CHK which is not a pass through call.

* gcc.dg/builtin-object-size-18.c: New test.

From-SVN: r255133

Add missing gcc/config.gcc hunks from r255121.

From-SVN: r255132

Add missing hunks from r255121.

From-SVN: r255131

Daily bump.

From-SVN: r255130

Add [[nodiscard]] attribute to std::launder

* libsupc++/new (launder): Add nodiscard attribute.
* testsuite/18_support/launder/nodiscard.cc: New test.

From-SVN: r255127

[ARM] Fix Dot Product NEON intrinsics

2017-11-24  Christophe Lyon  <christophe.lyon@linaro.org>

* config/arm/arm_neon.h: Fix pragma GCC push_options before
vdot_u32.

From-SVN: r255126

re PR ada/83091 (ICE with -g in arm-eabi compilation)

PR ada/83091
* gcc-interface/decl.c (gnat_to_gnu_entity): Do not build a variant
type for the implementation type of a packed array.

From-SVN: r255125

Add [[nodiscard]] attribute to C++17 components

* include/bits/fs_path.h (path::empty): Add nodiscard attribute.
* include/bits/range_access.h (empty): Likewise.
* include/std/string_view (basic_string_view::empty): Likewise.
* testsuite/21_strings/basic_string_view/capacity/empty_neg.cc: New
test.
* testsuite/24_iterators/range_access_cpp17_neg.cc: New test.
* testsuite/27_io/filesystem/path/query/empty_neg.cc: New test.

From-SVN: r255124

PR libstdc++/83134 Ensure std::__not_ converts B::value to bool

PR libstdc++/83134
* include/std/type_traits (__not_): Explicitly convert to bool.
* testsuite/20_util/declval/requirements/1_neg.cc: Adjust dg-error.
* testsuite/20_util/logical_traits/83134.cc: New test.
* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Adjust
dg-error.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
Likewise.

From-SVN: r255122

Enable VBMI2 support [3/7]

gcc/
config/i386/avx512vbmi2intrin.h (_mm512_mask_expand_epi8,
_mm512_maskz_expand_epi8, _mm512_mask_expandloadu_epi8,
_mm512_maskz_expandloadu_epi8, _mm512_mask_expand_epi16,
_mm512_maskz_expand_epi16, _mm512_mask_expandloadu_epi16,
_mm512_maskz_expandloadu_epi16): New intrinsics.
config/i386/avx512vbmi2vlintrin.h (_mm_mask_expand_epi8,
_mm_maskz_expand_epi8, _mm_mask_expandloadu_epi8,
_mm_maskz_expandloadu_epi8, _mm_mask_expand_epi16,
_mm_maskz_expand_epi16, _mm_mask_expandloadu_epi16,
_mm_maskz_expandloadu_epi16, _mm256_mask_expand_epi16,
_mm256_maskz_expand_epi16, _mm256_mask_expandloadu_epi16,
_mm256_maskz_expandloadu_epi16, _mm256_mask_expand_epi8,
_mm256_maskz_expand_epi8, _mm256_mask_expandloadu_epi8,
_mm256_maskz_expandloadu_epi8): New intrinsics.
config/i386/i386-builtin-types.def (V64QI_FTYPE_PCV64QI_V64QI_UDI,
V32HI_FTYPE_PCV32HI_V32HI_USI, V32QI_FTYPE_PCV32QI_V32QI_USI,
V16HI_FTYPE_PCV16HI_V16HI_UHI, V16QI_FTYPE_PCV16QI_V16QI_UHI,
V8HI_FTYPE_PCV8HI_V8HI_UQI): New types.
config/i386/i386.c (ix86_expand_special_args_builtin): Use new types.
config/i386/sse.md (VI248_VLBW): New iterator.
(expand<mode>_mask, expand<mode>_maskz): New patterns.

gcc/testsuite/
gcc.target/i386/avx512f-vpexpandb-1.c: New test.
gcc.target/i386/avx512f-vpexpandb-2.c: Ditto.
gcc.target/i386/avx512f-vpexpandw-1.c: Ditto.
gcc.target/i386/avx512f-vpexpandw-2.c: Ditto.
gcc.target/i386/avx512vl-vpexpandb-1.c: Ditto.
gcc.target/i386/avx512vl-vpexpandb-2.c: Ditto.
gcc.target/i386/avx512vl-vpexpandw-1.c: Ditto.
gcc.target/i386/avx512vl-vpexpandw-2.c: Ditto.

From-SVN: r255121

Enable VBMI2 support [2/7]

gcc/
config.gcc (avx512vbmi2intrin.h, avx512vbmi2vlintrin): New headers.
config/i386/avx512vbmi2intrin.h (_mm512_mask_compress_epi8,
_mm512_maskz_compress_epi8, _mm512_mask_compressstoreu_epi8,
_mm512_mask_compress_epi16, _mm512_maskz_compress_epi16,
_mm512_mask_compressstoreu_epi16): New.
config/i386/avx512vbmi2vlintrin.h (_mm_mask_compress_epi8,
_mm_maskz_compress_epi8, _mm256_mask_compressstoreu_epi16,
_mm_mask_compress_epi16, _mm_maskz_compress_epi16,
_mm256_mask_compress_epi16, _mm256_maskz_compress_epi16,
_mm_mask_compressstoreu_epi8, _mm_mask_compressstoreu_epi16,
_mm256_mask_compress_epi8, _mm256_maskz_compress_epi8,
_mm256_mask_compressstoreu_epi8): New.
config/i386/i386-builtin-types.def (VOID_FTYPE_PV64QI_V64QI_UDI,
VOID_FTYPE_PV32HI_V32HI_USI, VOID_FTYPE_PV32QI_V32QI_USI,
VOID_FTYPE_PV16QI_V16QI_UHI, VOID_FTYPE_PV16HI_V16HI_UHI,
VOID_FTYPE_PV8HI_V8HI_UQI): New types.
config/i386/i386-builtin.def (__builtin_ia32_compressqi512_mask,
__builtin_ia32_compresshi512_mask, __builtin_ia32_compressqi256_mask,
__builtin_ia32_compressqi128_mask, __builtin_ia32_compresshi256_mask,
__builtin_ia32_compresshi128_mask,
__builtin_ia32_compressstoreuqi512_mask,
__builtin_ia32_compressstoreuhi512_mask,
__builtin_ia32_compressstoreuqi256_mask,
__builtin_ia32_compressstoreuqi128_mask,
__builtin_ia32_compressstoreuhi256_mask,
__builtin_ia32_compressstoreuhi128_mask): New builtins.
config/i386/i386.c (ix86_init_mmx_sse_builtins): Create special args
array for flags2.
(ix86_expand_special_args_builtin): Handle new types.
(s4fma_expand): Handle new builtin array.
config/i386/immintrin.h: Include new headers.
config/i386/sse.md (VI12_AVX512VLBW): New iterator.
(compress<mode>_mask, compressstore<mode>_mask): New patterns.

gcc/testsuite/
gcc.target/i386/avx512-check.h: Handle AVX512VBMI2 bit.
gcc.target/i386/avx512f-vpcompressb-1.c: New test.
gcc.target/i386/avx512f-vpcompressb-2.c: Ditto.
gcc.target/i386/avx512f-vpcompressw-1.c: Ditto.
gcc.target/i386/avx512f-vpcompressw-2.c: Ditto.
gcc.target/i386/avx512vl-vpcompressb-1.c: Ditto.
gcc.target/i386/avx512vl-vpcompressb-2.c: Ditto.
gcc.target/i386/avx512vl-vpcompressw-1.c: Ditto.
gcc.target/i386/avx512vl-vpcompressw-2.c: Ditto.
gcc.target/i386/i386.exp (check_effective_target_avx512vbmi2): New.

From-SVN: r255119

rs6000.c (rs6000_gimple_fold_builtin): Formatting fixes.

* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Formatting
fixes.  Declare temp and g variables at the top in order to avoid
{} in most of the cases.

From-SVN: r255118

parser.c (cp_parser_omp_declare): Change return type to bool from void, return true for declare simd.

* parser.c (cp_parser_omp_declare): Change return type to bool from
void, return true for declare simd.
(cp_parser_pragma): Return cp_parser_omp_declare returned value
rather than always false.

From-SVN: r255117

c-parser.c (c_parser_omp_declare_simd): Reject declare simd in pragma_stmt context.

* c-parser.c (c_parser_omp_declare_simd): Reject declare simd in
pragma_stmt context.

* gcc.dg/gomp/declare-simd-1.c (f9): Remove.
* gcc.dg/gomp/declare-simd-5.c: New test.

From-SVN: r255116

re PR fortran/81841 (THREADPRIVATE (OpenMP) wrongly rejected in BLOCK DATA)

PR fortran/81841
* parse.c (parse_spec): Allow ST_OMP_THREADPRIVATE inside of
BLOCK DATA.

* libgomp.fortran/pr81841.f90: New test.

From-SVN: r255115

pr65240-1.C: Add -Wno-return-type to dg-options.

* g++.dg/pr65240-1.C: Add -Wno-return-type to dg-options.
* g++.dg/pr65240-2.C: Likewise.
* g++.dg/pr65240-3.C: Likewise.
* g++.dg/pr65240-4.C: Likewise.

From-SVN: r255114

Simplify ptr - 0

2017-11-23  Marc Glisse  <marc.glisse@inria.fr>

* match.pd (ptr-0): New transformation.

From-SVN: r255113

This patch adds support for modelling the varying costs of different addressing modes.

This patch adds support for modelling the varying costs of
different addressing modes. The generic cost table treats
all addressing modes as having equal cost.

gcc/ChangeLog:

2017-11-23  Charles Baylis  <charles.baylis@linaro.org>

        * config/arm/arm-protos.h (enum arm_addr_mode_op): New.
        (struct addr_mode_cost_table): New.
        (struct tune_params): Add field addr_mode_costs.
        * config/arm/arm.c (generic_addr_mode_costs): New.
        (arm_slowmul_tune): Initialise addr_mode_costs field.
        (arm_fastmul_tune): Likewise.
        (arm_strongarm_tune): Likewise.
        (arm_xscale_tune): Likewise.
        (arm_9e_tune): Likewise.
        (arm_marvell_pj4_tune): Likewise.
        (arm_v6t2_tune): Likewise.
        (arm_cortex_tune): Likewise.
        (arm_cortex_a8_tune): Likewise.
        (arm_cortex_a7_tune): Likewise.
        (arm_cortex_a15_tune): Likewise.
        (arm_cortex_a35_tune): Likewise.
        (arm_cortex_a53_tune): Likewise.
        (arm_cortex_a57_tune): Likewise.
        (arm_exynosm1_tune): Likewise.
        (arm_xgene1_tune): Likewise.
        (arm_cortex_a5_tune): Likewise.
        (arm_cortex_a9_tune): Likewise.
        (arm_cortex_a12_tune): Likewise.
        (arm_cortex_a73_tune): Likewise.
        (arm_v7m_tune): Likewise.
        (arm_cortex_m7_tune): Likewise.
        (arm_v6m_tune): Likewise.
        (arm_fa726te_tune): Likewise.
        (arm_mem_costs): Use table lookup to calculate cost of addressing
        mode.

From-SVN: r255112

[ARM] Refactor costs calculation for MEM.

This patch moves the calculation of costs for MEM into a
separate function, and reforms the calculation into two
parts. Firstly any additional cost of the addressing mode
is calculated, and then the cost of the memory access itself
is added.

In this patch, the calculation of the cost of the addressing
mode is omitted, to be added in a subsequent patch.

gcc/ChangeLog:

<date>  Charles Baylis  <charles.baylis@linaro.org>

        * config/arm/arm.c (arm_mem_costs): New function.
        (arm_rtx_costs_internal): Use arm_mem_costs.

gcc/testsuite/ChangeLog:

<date>  Charles Baylis  <charles.baylis@linaro.org>

        * gcc.target/arm/addr-modes-float.c: New test.
        * gcc.target/arm/addr-modes-int.c: New test.
        * gcc.target/arm/addr-modes.h: New header.

From-SVN: r255111

re PR fortran/36313 ([F03] {MIN,MAX}{LOC,VAL} should accept character arguments)

2017-11-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/36313
* m4/maxloc2s.m4: Replace int for character length by
gfc_charlen_type.
* m4/minloc2s.m4: Likewise.
* generated./maxloc2_16_s1.c: Regenerated.
* generated./maxloc2_16_s4.c: Regenerated.
* generated./maxloc2_4_s1.c: Regenerated.
* generated./maxloc2_4_s4.c: Regenerated.
* generated./maxloc2_8_s1.c: Regenerated.
* generated./maxloc2_8_s4.c: Regenerated.
* generated./minloc2_16_s1.c: Regenerated.
* generated./minloc2_16_s4.c: Regenerated.
* generated./minloc2_4_s1.c: Regenerated.
* generated./minloc2_4_s4.c: Regenerated.
* generated./minloc2_8_s1.c: Regenerated.
* generated./minloc2_8_s4.c: Regenerated.

From-SVN: r255109

Fix .debug_rnglists generation with -gdwarf-5 -gsplit-dwarf.

Early debug broke generation of .debug_rnglists when using both -gdwarf5
and -gsplit-dwarf. It introduces a generation for init_sections_and_labels,
but doesn't account for the generation of up to 4 unique ranges labels,
two created in init_sections_and_labels and two in output_rnglists.
Fix this by passing generation to output_rnglists and creating 4 unique
labels per generation.

Without this fix using -gdwarf-5 -gsplit-dwarf could result in:
  Error: symbol `.Ldebug_ranges2' is already defined

gcc/ChangeLog:

       * dwarf2out.c (init_sections_and_labels): Use generation to create
       unique ranges_section_label and ranges_base_label. Return generation.
       (output_rnglists): Add generation argument. Use generation to create
       unique ranges labels.
       (dwarf2out_finish): Get generation from init_sections_and_labels
       and pass generation to output_rnglists.

From-SVN: r255107

generic.texi (ANNOTATE_EXPR): Document 3rd operand.

* doc/generic.texi (ANNOTATE_EXPR): Document 3rd operand.
* cfgloop.h (struct loop): Add unroll field.
* function.h (struct function): Add has_unroll bitfield.
* gimplify.c (gimple_boolify) <ANNOTATE_EXPR>: Deal with unroll kind.
(gimplify_expr) <ANNOTATE_EXPR>: Propagate 3rd operand.
* loop-init.c (pass_loop2::gate): Return true if cfun->has_unroll.
(pass_rtl_unroll_loops::gate): Likewise.
* loop-unroll.c (decide_unrolling): Tweak note message.  Skip loops
for which loop->unroll==1.
(decide_unroll_constant_iterations): Use note for consistency and
take loop->unroll into account.  Return early if loop->unroll is set.
Fix thinko in existing test.
(decide_unroll_runtime_iterations): Use note for consistency and
take loop->unroll into account.
(decide_unroll_stupid): Likewise.
* lto-streamer-in.c (input_cfg): Read loop->unroll.
* lto-streamer-out.c (output_cfg): Write loop->unroll.
* tree-cfg.c (replace_loop_annotate_in_block) <annot_expr_unroll_kind>:
        New case.
(replace_loop_annotate) <annot_expr_unroll_kind>: Likewise.
(print_loop): Print loop->unroll if set.
* tree-core.h (enum annot_expr_kind): Add annot_expr_unroll_kind.
* tree-inline.c (copy_loops): Copy unroll and set cfun->has_unroll.
* tree-pretty-print.c (dump_generic_node) <annot_expr_unroll_kind>:
New case.
* tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Bail out if
loop->unroll is set and smaller than the trip count.  Otherwise bypass
entirely the heuristics if loop->unroll is set.  Remove dead note.
Fix off-by-one bug in other note.
(try_peel_loop): Bail out if loop->unroll is set.  Fix formatting.
(tree_unroll_loops_completely_1): Force unrolling if loop->unroll
is greater than 1.
(tree_unroll_loops_completely): Make static.
(pass_complete_unroll::execute): Use correct type for variable.
(pass_complete_unrolli::execute): Fix formatting.
* tree.def (ANNOTATE_EXPR): Add 3rd operand.
ada/
* gcc-interface/trans.c (gnat_gimplify_stmt) <LOOP_STMT>: Pass 3rd
operand to ANNOTATE_EXPR and also pass unrolling hints.
c/
* c-parser.c (c_parser_while_statement): Pass 3rd operand to
ANNOTATE_EXPR.
(c_parser_do_statement): Likewise.
(c_parser_for_statement): Likewise.
cp/
* pt.c (tsubst_expr) <ANNOTATE_EXPR>: Recurse on 3rd operand.
* semantics.c (finish_while_stmt_cond): Pass 3rd operand to
ANNOTATE_EXPR.
(finish_do_stmt): Likewise.
(finish_for_cond): Likewise.
fortran/
* trans-stmt.c (gfc_trans_forall_loop): Pass 3rd operand to
ANNOTATE_EXPR.

From-SVN: r255106

i386.h (TARGET_PREFER_AVX256): Also enable when TARGET_PREFER_AVX128 is set.

* config/i386/i386.h (TARGET_PREFER_AVX256): Also
enable when TARGET_PREFER_AVX128 is set.

From-SVN: r255105

ipa-profile.c (ipa_propagate_frequency_1): Use count instead of frequency.

* ipa-profile.c (ipa_propagate_frequency_1): Use count instead of
frequency.
* cgraph.c (cgraph_edge::dump_edge_flags): Dump sreal frequencies.
(cgraph_edge::maybe_hot_p): Use sreal frequencies.

From-SVN: r255104

ipa-fnsummary.c (record_modified_bb_info): Use sreal frequencies.

* ipa-fnsummary.c (record_modified_bb_info): Use sreal
frequencies. Fix estimation of aggregate parameters.

* gcc.dg/ipa/inline-1.c: Update template.

From-SVN: r255103

cgraphclones.c (cgraph_node::create_clone): Fix updating of profile when inlining.

* cgraphclones.c (cgraph_node::create_clone): Fix updating of profile
when inlining.

From-SVN: r255102

[libgccjit] Wrap RETURN_NULL_IF_FAIL_NONNULL_NUMERIC_TYPE in JIT_{BEGIN,END}_STMT.

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* libgccjit.c (RETURN_NULL_IF_FAIL_NONNULL_NUMERIC_TYPE): Wrap in
JIT_{BEGIN,END}_STMT.

From-SVN: r255101

[sh] Wrap ASM_OUTPUT_ADDR_VEC_ELT in do {} while (0)

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* config/sh/sh.h (ASM_OUTPUT_ADDR_VEC_ELT): Wrap in "do {} while (0)".

From-SVN: r255100

[libobjc] Wrap CLASS_TABLE_HASH in do {} while (0)

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* class.c (CLASS_TABLE_HASH): Wrap in "do {} while (0)".

From-SVN: r255099

[ft32] Remove semicolon after ASM_OUTPUT_ADDR_VEC_ELT

2017-11-23  Tom de Vries  <tom@codesourcery.com>

* config/ft32/ft32.h (ASM_OUTPUT_ADDR_VEC_ELT): Remove semicolon after
macro.

From-SVN: r255098

re PR target/83111 ([sh] stack smashing detected in gen_udivsi3)

gcc/
PR target/83111
* config/sh/sh.md (udivsi3, divsi3, sibcall_value_pcrel,
sibcall_value_pcrel_fdpic): Use local variable instead of
operands[3].
(calli_tbr_rel): Add missing operand 2.
(call_valuei_tbr_rel): Add missing operand 3.

From-SVN: r255096

re PR middle-end/82253 (ICE in convert_move, at expr.c:604)

PR middle-end/82253
* expr.c (expand_assignment): For CONCAT to_rtx, complex type from and
bitpos/bitsize covering the whole destination, use store_expr only if
the complex mode is the same.  Otherwise, use expand_normal and if
it returns CONCAT, subreg each part separately instead of trying to
subreg the whole result.

* gfortran.dg/pr82253.f90: New test.

From-SVN: r255095

re PR fortran/82814 (ICE from submodule character function)

2017-11-23  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/82814
* trans-types.c (gfc_sym_type): If a character function result
is missing the charlen backend_decl, use the one from the name-
space procedure symbol, if present.

2017-11-23  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/82814
* gfortran.dg/submodule_31.f08: New test.

From-SVN: r255094

re PR tree-optimization/23094 (store ccp, or store copy prop misses an optimization)

2017-11-23  Richard Biener  <rguenther@suse.de>

PR tree-optimization/23094
* tree-ssa-sccvn.c (vuse_ssa_val): Handle VN_TOP when we
come here from walking over backedges in the first iteration.
(vn_reference_lookup_3): Skip clobbers that store the same value.

* gcc.dg/tree-ssa/ssa-fre-61.c: New testcase.

From-SVN: r255093

re PR tree-optimization/81403 (wrong code at -O3)

2017-11-23  Richard Biener  <rguenther@suse.de>

PR tree-optimization/81403
* tree-ssa-pre.c (get_representative_for): Add parameter specifying
a block we need a leader relative to.
(phi_translate_1): For nary processing require a leader from
get_representative_for given we run expression simplification
using match-and-simplify.  Remove previous fix.

From-SVN: r255092

re PR tree-optimization/83089 (ICE: Segmentation fault (in instantiate_scev_name))

2017-11-23  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83089
* gcc.dg/pr83089.c: Require pthread.

From-SVN: r255091

cmd/go, go/internal/gccgoimporter: pass -X to ar on AIX

    Reviewed-on: https://go-review.googlesource.com/72930

From-SVN: r255090

Daily bump.

From-SVN: r255089

gimple-ssa-evrp-analyze.c (evrp_range_analyzer::try_find_new_range): Use new method allocate_value_range rather than accessing the...

* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::try_find_new_range):
Use new method allocate_value_range rather than accessing the
vrp_value_range_pool data member directly.
* tree-vrp.c (simplify_stmt_for_jump_threading): Tweak slightly
to use extract_range_from_stmt method to avoid need for
extract_range_from_assignment method.
(vrp_prop::vrp_finalize): Use set_lattice_propagation_complete
method rather than setting values_propgated data member directly.
* vr-values.h (class vr_values): Privatize vrp_value_range_pool,
and values propagated data members and extract_range_from_assignment
method.  Reorder private data members to conform to standards.
Add new methods set_lattice_propagation_complete and
allocate_value_range.

From-SVN: r255086

* g++.dg/abi/pr68355.C: Don't expect tail call on ia32.

From-SVN: r255085

re PR c++/82401 (error: qsort comparator non-negative on sorted output: 1 in insert_late_enum_def_bindings on an invalid code)

PR c++/82401
* name-lookup.c (member_name_cmp): Return 0 if a == b.

* g++.dg/cpp0x/pr82401.C: New test.

From-SVN: r255084

re PR rtl-optimization/83030 (ICE in create_pseudo_cfg, at dwarf2cfi.c:2840)

PR rtl-optimization/83030
* doc/rtl.texi (Flags in an RTL Expression): Alphabetize, add entry
for CROSSING_JUMP_P and mention usage of 'jump' for JUMP_INSNs.
(Insns): Delete entry for REG_CROSSING_JUMP in register notes.
* bb-reorder.c (update_crossing_jump_flags): Do not test whether the
CROSSING_JUMP_P flag is already set before setting it.
* cfgrtl.c (fixup_partition_crossing): Likewise.
* reorg.c (relax_delay_slots): Do not consider a CROSSING_JUMP_P insn
as useless.

From-SVN: r255083

jit: update test suite for change to -Warray-bounds

jit.dg/test-error-array-bounds.c is a test of how libgccjit
handles errors coming from the middle-end, using -Warray-bounds as
an example.

It started failing as of r254830 (aka 987b3316c4e7c908e3c7d2151c20971f9707ad66),
due to that commit changing the wording of the message.

This commit fixes the jit testcase by updating it to use the new
wording.

gcc/testsuite/ChangeLog:
PR tree-optimization/82588
PR tree-optimization/82583
* jit.dg/test-error-array-bounds.c (verify_code): Update expected
error message from -Warray-bounds.

From-SVN: r255082

* g++.dg/graphite/pr41562.C: Add -Wno-return-type.

From-SVN: r255081

re PR libgomp/83106 (libgomp/target.c:2671:2: error: ‘strncat’ specified bound 5 equals source length [-Werror=stringop-overflow=])

PR libgomp/83106
* target.c (gomp_target_init): Compute lengths just once and
use them in both malloc size and subsequent copying.

From-SVN: r255080

simplify-rtx.c (simplify_binary_operation_1): Handle the case where both arguments are using gen_const_vec_series.

* simplify-rtx.c (simplify_binary_operation_1) <case VEC_SERIES>:
Handle the case where both arguments are using gen_const_vec_series.

From-SVN: r255079

Make shift argument to eoshift0 and eoshift2 be of type index_type

Test case that requires 4 GB RAM that exercises eoshift0:

program main
  implicit none
  integer(1) :: line(2_8**31+10)
  line = 42
  line = eoshift(line, 2_8**31+7)
  print *, line(1:4)
  print *, line((ubound(line, 1, kind=8)-4):ubound(line, 1, kind=8))
end program main

Before patch:
❯ ./a.out
    0    0    0    0
    42   42   42   42   42

With patch:
❯ ./a.out
   42   42   42    0
   0    0    0    0    0

Regtested on x86_64-pc-linux-gnu.

libgfortran/ChangeLog:

2017-11-22  Janne Blomqvist  <jb@gcc.gnu.org>

        * intrinsics/eoshift0.c (eoshift0): Make shift an index_type.
        * intrinsics/eoshift2.c (eoshift2): Make shift an index_type.

From-SVN: r255077

C/C++: fix quoting of "aka" typedef information (PR 62170)

PR 62170 describes a problem with how the quoting in pp_format
interacts with the "aka" information for typedefs in %qT for
the C family of frontends, and also now for %qH and %qI in the
C++ frontend: we print:

  'Py_ssize_t* {aka int*}'
   ^^^^^^^^^^^^^^^^^^^^^^ colorized as "quote"

i.e.
  '[START_COLOR]Py_ssize_t* {aka int*}[END_COLOR]'

when we should print:

  'Py_ssize_t*' {aka 'int*'}
   ^^^^^^^^^^^        ^^^^ colorized as "quote"

i.e.
  '[START_COLOR]Py_ssize_t*[END_COLOR]' {aka '[START_COLOR]int*[END_COLOR]'}

where the opening and closing quote characters and colorization are
added by the 'q' handling within pp_format.

This patch fixes the quoting by updating the %T handling in C and C++
and the %H/%I handling in C++ to insert the quoting appropriately.
It converts the "quote" param of the pp_format_decoder callback from
bool to bool *, allowing for the %T and %H/%I handlers to write
false back to it, to avoid printing the closing quote for the cases
like the above where the trailing closing quote isn't needed.

It introduces pp_begin_quote/pp_end_quote to simplify this.  These
take a "bool show_color", rather than using "pp_show_color (pp)"
since cxx_pp's pp_show_color isn't currently initialized (since
cxx_initialize_diagnostics happens before diagnostic_color_init).

gcc/c/ChangeLog:
PR c++/62170
* c-objc-common.c (c_tree_printer): Convert penultimate param from
bool to bool *.  Within '%T' handling, if showing an "aka", use
"quoted" param to add appropriate quoting.

gcc/cp/ChangeLog:
PR c++/62170
* error.c (type_to_string): Add leading comment.  Add params
"postprocessed", "quote", and "show_color", using them to fix
quoting of the "aka" for types involving typedefs.
(arg_to_string): Update for new params to type_to_string.
(cxx_format_postprocessor::handle): Likewise.
(cp_printer): Convert penultimate param from bool to bool *.
Update call to type_to_string and calls to
defer_phase_2_of_type_diff.

gcc/fortran/ChangeLog:
PR c++/62170
* error.c (gfc_notify_std): Convert "quoted" param from bool to
bool *.

gcc/ChangeLog:
PR c++/62170
* pretty-print.c (pp_format): Move quoting implementation to
pp_begin_quote and pp_end_quote.  Update pp_format_decoder call
to pass address of "quote" local.
(pp_begin_quote): New function.
(pp_end_quote): New function.
* pretty-print.h (printer_fn): Convert penultimate param from bool
to bool *.
(pp_begin_quote): New decl.
(pp_end_quote): New decl.
* tree-diagnostic.c (default_tree_printer): Convert penultimate
param from bool to bool *.
* tree-diagnostic.h (default_tree_printer): Likewise.

gcc/testsuite/ChangeLog:
PR c++/62170
* g++.dg/diagnostic/aka1.C: Update expected error messages to
reflect fixes to quoting.
* g++.dg/diagnostic/aka2.C: New test case.
* g++.dg/parse/error55.C: Update expected error messages to
reflect fixes to quoting.
* gcc.dg/diag-aka-1.c: Likewise.
* gcc.dg/diag-aka-2.c: New test case.
* gcc.dg/pr13804-1.c: Update expected error messages to reflect
fixes to quoting.
* gcc.dg/pr56980.c: Likewise.
* gcc.dg/pr65050.c: Likewise.
* gcc.dg/redecl-14.c: Likewise.
* gcc.dg/utf16-4.c Likewise.
* gcc.target/i386/sse-vect-types.c (__m128d): Likewise.
* obj-c++.dg/invalid-type-1.mm: Likewise.
* objc.dg/proto-lossage-4.m: Likewise.

From-SVN: r255076

target-supports.exp (check_effective_target_bswap16): Remove

* lib/target-supports.exp (check_effective_target_bswap16): Remove
(check_effective_target_bswap32): Ditto.
(check_effective_target_bswap64): Ditto.
* gcc.dg/optimize-bswaphi-1.c: Use bswap effective
target instead of bswap16.
* gcc.dg/optimize-bswapsi-1.c: Use bswap effective
target instead of bswap32.
* gcc.dg/optimize-bswapsi-2.c: Ditto.
* gcc.dg/optimize-bswapsi-3.c: Ditto.
* gcc.dg/optimize-bswapsi-4.c: Ditto.
* gcc.dg/optimize-bswapsi-5.c: Ditto.
* gcc.dg/pr77673.c: Ditto.
* gcc.dg/optimize-bswapdi-1.c: Use bswap effective
target instead of bswap64.
* gcc.dg/optimize-bswapdi-2.c: Ditto.
* gcc.dg/optimize-bswapdi-3.c: Ditto.

From-SVN: r255075

* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::evrp_range_analyzer)
Initialize vr_values.
(evrp_range_analyzer::try_find_new_range): Call methods attached to
vr_values via vr_values class instance rather than delegators.
(evrp_range_analyzer::record_ranges_from_phis): Likewise.
(evrp_range_analyzer::record_ranges_from_stmt): Likewise.
(evrp_range_analyzer::push_value_range): Likewise.
(evrp_range_analyzer::pop_value_range): Likewise.
* gimple-ssa-evrp-analyze.h (class evrp_range_analyzer): Remove
most delegators.  Those remaining are exposed as public interfaces.
Make vr_values a pointer and private.
(evrp_range_analyzer::~evrp_range_analyzer): Delete the attached
vr_values.
(evrp_range_analyzer::get_vr_value): New method.
* gimple-ssa-evrp.c (class evrp_folder): Use DISABLE_COPY_AND_ASSIGN.
(evrp_folder::evrp_folder): New ctor to initialize vr_values.
(class evrp_dom_walker): Attach evrp_folder class, initialize
it in the ctor.  Remove temporary delegators.
(evrp_dom_walker::before_dom_children): Call methods in attached
evrp_range_analyzer class via class instance pointer.  Use
free value_range_constant_singleton to remove need for
op_with_constant_singleton_value delegator method.  Do not
create a vrp_prop class instance for every call!  Narrow
scope of a couple variables.
(evrp_dom_walker::cleanup): Call methods in attached
evrp_range_analyzer class via class instance pointer.
* vr-values.h (class vr_values): Privatize many methods and
data members.

From-SVN: r255074

Replace REDUC_*_EXPRs with internal functions.

This patch replaces the REDUC_*_EXPR tree codes with internal functions.
This is needed so that the upcoming in-order reductions can also use
internal functions without too much complication.

2017-11-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* tree.def (REDUC_MAX_EXPR, REDUC_MIN_EXPR, REDUC_PLUS_EXPR): Delete.
* cfgexpand.c (expand_debug_expr): Remove handling for them.
* expr.c (expand_expr_real_2): Likewise.
* fold-const.c (const_unop): Likewise.
* optabs-tree.c (optab_for_tree_code): Likewise.
* tree-cfg.c (verify_gimple_assign_unary): Likewise.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node): Likewise.
(op_code_prio): Likewise.
(op_symbol_code): Likewise.
* internal-fn.def (DEF_INTERNAL_SIGNED_OPTAB_FN): Define.
(IFN_REDUC_PLUS, IFN_REDUC_MAX, IFN_REDUC_MIN): New internal functions.
* internal-fn.c (direct_internal_fn_optab): New function.
(direct_internal_fn_array, direct_internal_fn_supported_p
(internal_fn_expanders): Handle DEF_INTERNAL_SIGNED_OPTAB_FN.
* fold-const-call.c (fold_const_reduction): New function.
(fold_const_call): Handle CFN_REDUC_PLUS, CFN_REDUC_MAX and
CFN_REDUC_MIN.
* tree-vect-loop.c: Include internal-fn.h.
(reduction_code_for_scalar_code): Rename to...
(reduction_fn_for_scalar_code): ...this and return an internal
function.
(vect_model_reduction_cost): Take an internal_fn rather than
a tree_code.
(vect_create_epilog_for_reduction): Likewise.  Build calls rather
than assignments.
(vectorizable_reduction): Use internal functions rather than tree
codes for the reduction operation.  Update calls to the functions
above.
* config/aarch64/aarch64-builtins.c (aarch64_gimple_fold_builtin):
Use calls to internal functions rather than REDUC tree codes.
* config/aarch64/aarch64-simd.md: Update comment accordingly.

From-SVN: r255073

PR 83097 Use __BYTE_ORDER__ predefined macro instead of runtime check

By using the __BYTE_ORDER__ predefined macro we don't need the
determine_endianness function anymore.

Regtested on x86_64-pc-linux-gnu.

libgfortran/ChangeLog:

2017-11-22  Janne Blomqvist  <jb@gcc.gnu.org>

        PR libfortran/83097
* io/inquire.c (inquire_via_unit): Use __BYTE_ORDER__ predefined
macro.
* io/open.c (st_open): Likewise.
* io/transfer.c (data_transfer_init): Likewise.
* io/write.c (btoa_big): Likewise.
(otoa_big): Likewise.
(ztoa_big): Likewise.
* libgfortran.h (big_endian): Remove variable.
(GFOR_POINTER_TO_L1): Use __BYTE_ORDER__ macro.
* runtime/main.c (determine_endianness): Remove function.
(init): Remove call to determine_endianness.
* runtime/minimal.c: Remove setting big_endian variable.

From-SVN: r255072

[PATCH] Add myself as GCC maintainer

*** ChangeLog ***

2017-11-22  Sudakshina Das  <sudi.das@arm.com>

* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r255071

re PR fortran/36313 ([F03] {MIN,MAX}{LOC,VAL} should accept character arguments)

2017-11-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/36313
* Makefile.am: Add i_maxloc0s_c, i_maxloc1s_c, i_maxloc2s_c,
i_minloc0s_c, i_minloc1s_c and i_minloc2s_c.
* Makefile.in: Regenerated.
        * generated/maxloc0_16_s1.c: New file.
        * generated/maxloc0_16_s4.c: New file.
        * generated/maxloc0_4_s1.c: New file.
        * generated/maxloc0_4_s4.c: New file.
        * generated/maxloc0_8_s1.c: New file.
        * generated/maxloc0_8_s4.c: New file.
        * generated/maxloc1_16_s1.c: New file.
        * generated/maxloc1_16_s4.c: New file.
        * generated/maxloc1_4_s1.c: New file.
        * generated/maxloc1_4_s4.c: New file.
        * generated/maxloc1_8_s1.c: New file.
        * generated/maxloc1_8_s4.c: New file.
        * generated/maxloc2_16_s1.c: New file.
        * generated/maxloc2_16_s4.c: New file.
        * generated/maxloc2_4_s1.c: New file.
        * generated/maxloc2_4_s4.c: New file.
        * generated/maxloc2_8_s1.c: New file.
        * generated/maxloc2_8_s4.c: New file.
        * generated/minloc0_16_s1.c: New file.
        * generated/minloc0_16_s4.c: New file.
        * generated/minloc0_4_s1.c: New file.
        * generated/minloc0_4_s4.c: New file.
        * generated/minloc0_8_s1.c: New file.
        * generated/minloc0_8_s4.c: New file.
        * generated/minloc1_16_s1.c: New file.
        * generated/minloc1_16_s4.c: New file.
        * generated/minloc1_4_s1.c: New file.
        * generated/minloc1_4_s4.c: New file.
        * generated/minloc1_8_s1.c: New file.
        * generated/minloc1_8_s4.c: New file.
        * generated/minloc2_16_s1.c: New file.
        * generated/minloc2_16_s4.c: New file.
        * generated/minloc2_4_s1.c: New file.
        * generated/minloc2_4_s4.c: New file.
        * generated/minloc2_8_s1.c: New file.
        * generated/minloc2_8_s4.c: New file.
        * m4/iforeach-s.m4: New file.
        * m4/ifunction-s.m4: New file.
        * m4/maxloc0s.m4: New file.
        * m4/maxloc1s.m4: New file.
        * m4/maxloc2s.m4: New file.
        * m4/minloc0s.m4: New file.
        * m4/minloc1s.m4: New file.
        * m4/minloc2s.m4: New file.
* gfortran.map: Add new functions.
* libgfortran.h: Add gfc_array_s1 and gfc_array_s4.

2017-11-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/36313
* check.c (int_or_real_or_char_check_f2003): New function.
* iresolve.c (gfc_resolve_maxloc): Add number "2" for
character arguments and rank-zero return value.
(gfc_resolve_minloc): Likewise.
* trans-intrinsic.c (gfc_conv_intrinsic_minmaxloc): Handle case of
character arguments and rank-zero return value by removing
unneeded arguments and calling the library function.

2017-11-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/36313
* gfortran.dg/maxloc_string_1.f90: New test.
* gfortran.dg/minloc_string_1.f90: New test.

From-SVN: r255070

vxworks.c (vxworks_override_options): Pick default dwarf version from macro value, VXWORKS_DWARF_VERSION_DEFAULT.

2017-11-22  Olivier Hainque  <hainque@adacore.com>

       * config/vxworks.c (vxworks_override_options): Pick default
dwarf version from macro value, VXWORKS_DWARF_VERSION_DEFAULT.
       * config/vxworks.h: Define VXWORKS_DWARF_VERSION_DEFAULT and
       DWARF_GNAT_ENCODINGS_DEFAULT.
       * config/vxworksae.h: Likewise.

From-SVN: r255069