[AArch64] Make BIC, other logical instructions, available.

2015-09-22  Matthew Wahab  <matthew.wahab@arm.com>

* config/aarch64/aarch64.md
(<LOGICAL:optab>_one_cmpl_<SHIFT:optab><mode>3): Make a named
pattern.

From-SVN: r227999

[AArch64] Use atomic instructions for swap and fetch-update operations.

gcc/
2015-09-22  Matthew Wahab  <matthew.wahab@arm.com>

* config/aarch64/aarch64-protos.h (aarch64_gen_atomic_ldop):
Declare.
* config/aarch64/aarch64.c (aarch64_emit_atomic_swap): New.
(aarch64_gen_atomic_ldop): New.
(aarch64_split_atomic_op): Fix whitespace and add a comment.
* config/aarch64/atomics.md (UNSPECV_ATOMIC_SWP): New.
(aarch64_compare_and_swap<mode>_lse): Fix some whitespace.
(atomic_exchange<mode>): Replace with an expander.
(aarch64_atomic_exchange<mode>): New.
(aarch64_atomic_exchange<mode>_lse): New.
(aarch64_atomic_<atomic_optab><mode>): Fix some whitespace.
(aarch64_atomic_swp<mode>): New.

gcc/testsuite/
2015-09-22  Matthew Wahab  <matthew.wahab@arm.com>

* gcc.target/aarch64/atomic-inst-ops.inc: (TEST_MODEL): New.
(TEST_ONE): New.
        * gcc.target/aarch64/atomic-inst-swap.c: New.

From-SVN: r227998

[PATCH tree-inline] Do not say "called from here" with UNKNOWN_LOCATION

In https://sourceware.org/ml/libc-alpha/2014-12/msg00300.html, we give a
"called from here" note without actually having a location, which looks
strange. I haven't been able to generate such a testcase. If this happens,
try to at least point to the current function being called. If that location is
also unknown, skip the extra note.

gcc/ChangeLog:

2015-09-22  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* tree-inline.c (expand_call_inline): Use inform for extra note.
Do not give a note with UNKNOWN_LOCATION.
Replace input_location with gimple_location (stmt).
Use true/false instead of TRUE/FALSE.

gcc/testsuite/ChangeLog:

2015-09-22  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* gcc.target/i386/inline_error.c (int bar): Use dg-message for note.
* gcc.target/i386/pr57756.c (static __inline int caller): Likewise.
* gcc.target/i386/pr59789.c (f1): Likewise.
* gcc.target/i386/intrinsics_5.c (__m128i foo): Likewise.
* gcc.target/i386/intrinsics_6.c: Likewise.
* gcc.dg/winline-5.c (int t): Likewise.
* gcc.dg/winline-9.c (t): Likewise.
* gcc.dg/always_inline2.c (q): Likewise.
* gcc.dg/winline-2.c (inline int t): Likewise.
* gcc.dg/winline-6.c: Likewise.
* gcc.dg/winline-10.c (void g): Likewise.
* gcc.dg/pr49243.c (void parse): Likewise.
* gcc.dg/always_inline3.c (q2): Likewise.
* gcc.dg/winline-3.c: Likewise.
* gcc.dg/winline-7.c (inline void *t): Likewise.

From-SVN: r227997

Handle single restrict pointer in struct in create_variable_info_for_1

2015-09-22  Tom de Vries  <tom@codesourcery.com>

PR tree-optimization/67666
* tree-ssa-structalias.c (create_variable_info_for_1): Handle struct
with single field non-conservative.

* g++.dg/pr67666.C: New test.

From-SVN: r227996

re PR libgomp/67141 (wrong libgomp mutex initialisation order)

2015-09-22  Chung-Lin Tang  <cltang@codesourcery.com>

PR libgomp/67141
* oacc-int.h (goacc_host_init): Add declaration.
* oacc-host.c (goacc_host_init): Remove static and constructor attribute.
* oacc-init.c (goacc_runtime_initialize): Call goacc_host_init() at end.

From-SVN: r227994

Revert LRA SPARC changes for now.

gcc/

PR/67622
Revert:
2015-09-11  David S. Miller  <davem@davemloft.net>

* config/sparc/constraints.md: Make "U" constraint a real register
constraint.
* config/sparc/sparc.c (TARGET_LRA_P): Define.
(D_MODES, DF_MODES): Add missing cast.
(TF_MODES, TF_MODES_NO_S): Include T_MODE.
(OF_MODES, OF_MODES_NO_S): Include O_MODE.
(sparc_register_move_cost): Decrease Niagara/UltrsSPARC memory
cost to 8.
* config/sparc/sparc.h (PROMOTE_MODE): Define.
* config/sparc/sparc.md (*movsi_lo_sum, *movsi_high): Do not
provide these insn when flag_pic.

2015-09-17  David S. Miller  <davem@davemloft.net>

* config/sparc/sparc-protos.h (sparc_secondary_memory_needed):
Declare.
* config/sparc/sparc.c (sparc_secondary_memory_needed): New
function.
* config/sparc/sparc.h (SECONDARY_MEMORY_NEEDED): Use it.
(HARD_REGNO_CALLER_SAVE_MODE): Define.
* config/sparc/sparc.md (sethi_di_medlow, losum_di_medlow, seth44)
(setm44, setl44, sethh, setlm, sethm, setlo, embmedany_sethi)
(embmedany_losum, embmedany_brsum, embmedany_textuhi)
(embmedany_texthi, embmedany_textulo, embmedany_textlo): Do not
provide when flag_pic.

From-SVN: r227993

Daily bump.

From-SVN: r227992

[FT32] fixes for the default hardware startup

libgcc/
        * config/ft32/crti-hw.S: Use __PMSIZE to allow configurable
        memory layout. Deal correctly with BSS region larger than 32K.
        Handle a watchdog reset like a power-on reset. Clean up unused
        code.

From-SVN: r227986

resolve.c (nonscalar_typebound_assign): Fix typos in comment.

2015-09-21  Steven G. Kargl  <kargl@gcc.gnu.org>

* resolve.c (nonscalar_typebound_assign): Fix typos in comment.

From-SVN: r227985

re PR fortran/67615 (ICE on using arithmetic if with array instead of scalar)

2015-09-21  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/67615
* resolve.c (gfc_resolve_code): Check for scalar expression in
arithmetic-if.

2015-09-21  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/67615
* gfortran.dg/pr67615.f90: new test.

From-SVN: r227981

[PATCH] Fix undefined behavior in h8300 backend

* config/h8300/h8300.md (andsi3_ashift_n_lower): Avoid undefined
behavior.

* gcc.target/h8300/andsi3_ashift_n_lower.c: New test.

From-SVN: r227978

Complete the implementation of N4230, Nested namespace definition.

/c-family
2015-09-21  Ville Voutilainen  <ville.voutilainen@gmail.com>

Complete the implementation of N4230, Nested namespace definition.
* c-cppbuiltin.c: Add __cpp_namespace_attributes and
__cpp_nested_namespace_definitions.

/cp
2015-09-21  Ville Voutilainen  <ville.voutilainen@gmail.com>

Complete the implementation of N4230, Nested namespace definition.
* parser.c (cp_parser_namespace_definition): Support namespace
attributes both before and after the namespace identifier.

/testsuite
2015-09-21  Ville Voutilainen  <ville.voutilainen@gmail.com>

Complete the implementation of N4230, Nested namespace definition.
* g++.dg/cpp1y/feat-cxx11-neg.C: Add tests for C++17 namespace
attributes and nested namespace definitions.
* g++.dg/cpp1y/feat-cxx98-neg.C: Likewise.
* g++.dg/cpp1z/feat-cxx1z.C: Likewise.
* g++.dg/cpp1y/feat-cxx14-neg.C: New.
* g++.dg/cpp1z/namespace-attribs.C: Likewise.
* g++.dg/cpp1z/nested-namespace-def1.C: Add tests for attributes
appearing before the namespace identifier.

From-SVN: r227977

Handle lines encoded into several maps in linemap_position_for_loc_and_offset

linemap_position_for_loc_and_offset() tries to generate a location_t
encoding a column offset from the current location, for example, point
to a certain character inside a string. This is trivial to do when the
new location "fits within" the map of the original location. However,
it may happen that the (long) line corresponding to the original
location is encoded in several maps, thus the new location should
actually be encoded in a subsequent map from the original location.
This patch detects this case and adjusts the map correspondingly.

(This shows that the line-map representation is quite wasteful in this
case, because line-maps always start at column 0. That is, map[0]
highest location may encode up to line 8 column 80, then
map[1]->start_location starts encoding at line 8 column 0. Thus, there
are two location_t values that point to the same source location.)

libcpp/ChangeLog:

2015-09-21  Manuel López-Ibáñez  <manu@gcc.gnu.org>

PR c/66415
* line-map.c (linemap_position_for_loc_and_offset): Handle the
case of long lines encoded in multiple maps.

gcc/testsuite/ChangeLog:

2015-09-21  Manuel López-Ibáñez  <manu@gcc.gnu.org>

PR c/66415
* gcc.dg/cpp/pr66415-1.c: Test column number.

From-SVN: r227975

* config/spu/spu.c (spu_expand_insv): Avoid undefined behavior.

From-SVN: r227974

passes.c (rest_of_decl_compilation): Do not call dwarf2out_early_global_decl for aliases.

2015-09-21  Richard Biener  <rguenther@suse.de>

* passes.c (rest_of_decl_compilation): Do not call
dwarf2out_early_global_decl for aliases.

* g++.dg/ext/attr-alias-3.C: Add -g.

From-SVN: r227973

re PR debug/67664 (Duplicate AT_const_value attributes in some c++ cases.)

2015-09-21  Richard Biener  <rguenther@suse.de>

PR debug/67664
* dwarf2out.c (add_location_or_const_value_attribute): Remove
attribute parameter.  Early exit if either DW_AT_const_value
or DW_AT_location are present already.
(gen_variable_die): Adjust caller.
(dwarf2out_late_global_decl): Likewise.

* g++.dg/debug/dwarf2/pr67764.C: New testcase.

From-SVN: r227972

re PR target/64345 ([SH] Improve single bit extraction)

testsuite/
PR target/64345
* gcc.target/sh/pr64345-1.c: Adjust expected insn counts for SH2A.

From-SVN: r227971

re PR target/67657 ([SH][5/6 Regression]: internal compiler error: in cselib_record_set, at cselib.c:2396 when compiling libjpeg-turbo)

gcc/
PR target/67657
* config/sh/sh.c (sh_remove_overlapping_post_inc,
sh_peephole_emit_move_insn): Add new functions.
* config/sh/sh-protos.h (sh_remove_overlapping_post_inc,
sh_peephole_emit_move_insn): Declere them.
* config/sh/sh.md: Use them in various peephole2 patterns.

From-SVN: r227969

re PR middle-end/67651 (Optimizer assumes nothing can reside at address 0 despite -fno-delete-null-pointer-checks)

2015-09-21  Richard Biener  <rguenther@suse.de>

PR middle-end/67651
* rtlanal.c (nonzero_address_p): SYMBOL_REFs may have zero
address with -fno-delete-null-pointer-checks.

From-SVN: r227968

Catch excess warning in gcc.dg/pragma-diag-5.c

We xfail at emitting the correct location, but we still need to catch the
warning.

2015-09-21 Manuel López-Ibáñez <manu@gcc.gnu.org>

* gcc.dg/pragma-diag-5.c: Catch excess warning.

From-SVN: r227967

Fix bootstrap error introduced in r227870

PR libstdc++/67647
* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
(basic_string::shrink_to_fit): Fix #endif placement.

From-SVN: r227966

[RS6000] Migrate from reduc_xxx to reduc_xxx_scal optabs

* config/rs6000/altivec.md (reduc_splus_<mode>): Rename to...
(reduc_plus_scal_<mode>): ...this, add rs6000_expand_vector_extract.
(reduc_uplus_v16qi): Remove.

* config/rs6000/vector.md (VEC_reduc_name): Change "splus" to "plus".
(reduc_<VEC_reduc_name>_v2df): Remove.
(reduc_<VEC_reduc_name>_v4sf): Remove.
(reduc_<VEC_reduc:VEC_reduc_name>_scal_<VEC_F:name>): New.

* config/rs6000/vsx.md (vsx_reduc_<VEC_reduc_name>_v2df): Declare
gen_ function by removing * prefix.
(vsx_reduc_<VEC_reduc_name>_v4sf): Likewise.

From-SVN: r227965

[PR middle-end/60832] Do not convert widest_int to tree just for printing it.

In do_warn_aggressive_loop_optimizations, we convert to a tree just to print a
widest_int. Apart from overly complicated, this results in printing '3u'
instead of just '3'.

Unfortunately, adding a printf-like conversion specifier would require making
pretty-print.c link with wide-int.cc, which will include a lot of new
dependencies into several other programs (gcov-tool for example). It would be
possible to add the conversion specifier to every FE pretty-printer, but this
still would require updating c-format.c, which is far from trivial. A simpler
approach is to convert to a string rather than to a tree.

In addition, "iteration 3 invokes undefined behavior within this loop" seems to
me clearer than "iteration 3 invokes undefined behavior; containing loop".

gcc/testsuite/ChangeLog:

2015-09-21  Manuel López-Ibáñez  <manu@gcc.gnu.org>

PR middle-end/60832
* gcc.dg/pr53265.c: Update.

gcc/ChangeLog:

2015-09-21  Manuel López-Ibáñez  <manu@gcc.gnu.org>

PR middle-end/60832
* tree-ssa-loop-niter.c (do_warn_aggressive_loop_optimizations):
Print i_bound without converting it to a tree.

From-SVN: r227964

[ARM] Replacing variable swaps that use a temporary variable with a call to std::swap in gcc/config/arm/arm.c

On behalf of <bilyan.borisov@arm.com>

2015-09-21  Bilyan Borisov  <bilyan.borisov@arm.com>

* config/arm/arm.c (thumb_output_move_mem_multiple): Replaced
operands[4] operands[5] swap with std::swap, removed tmp variable.
(arm_evpc_neon_vzip): Replaced in0/in1 and
out0/out1 swaps with std::swap, removed x variable.
(arm_evpc_neon_vtrn): Replaced in0/int1 and
out0/out1 swaos with std::swap, removed x variable.
(arm_expand_vec_perm_const_1): Replaced
d->op0/d->op1 swap with std::swap, removed x variable.
(arm_evpc_neon_vuzp): Replaced in0/in1 and
out0/out1 swaps with std::swap, removed x variable.

From-SVN: r227963

cygwin.h (STARTFILE_SPEC): Explicitly search sysroot/usr/lib/32api for additional win32 libraries...

2015-09-21  Jonathan Yong  <10walls@gmail.com>

        * config/i386/cygwin.h (STARTFILE_SPEC): Explicitly search
        sysroot/usr/lib/32api for additional win32 libraries,
        fixes failing Cygwin bootstrapping.

From-SVN: r227962

* gcc.target/arm/stack-checking.c: Skip for Thumb1.

From-SVN: r227960

invoke.texi (SH Options): Undocument SH5/SH64 related options.

gcc/
* doc/invoke.texi (SH Options): Undocument SH5/SH64 related options.

From-SVN: r227959

re PR tree-optimization/59478 (Optimize variable access via byte copy)

gcc/testsuite/
PR target/59478
* gcc.target/sh/pr59478.c: New.

From-SVN: r227958

re PR target/67126 ([SH] gcc.target/sh/pr51244-12.c failures)

gcc/
PR target/67126
* config/sh/sh.md (*reg_lsb_t): Emit bld insn on SH2A.
(*mov_t_msb_neg): Rewrite negc pattern.

gcc/testsuite/
PR target/67126
* gcc.target/sh/pr51244-12.c: Adjust testcase.
* gcc.target/sh/pr54236-2.c: Likewise.

From-SVN: r227957

Daily bump.

From-SVN: r227956

re PR middle-end/67619 (ICE at -O1 and above on x86_64-linux-gnu in int_mode_for_mode, at stor-layout.c:425)

PR middle-end/67619
* lib/target-supports.exp (check_effective_target_builtin_eh_return):
New procedure.

From-SVN: r227952

MAINTAINERS: Update email.

2015-09-20  Kai Tietz  <ktietz70@googlemail.com>

* MAINTAINERS: Update email.

From-SVN: r227951

[AArch64][5/5] Cleanup immediate generation code in aarch64_internal_mov_immediate

2015-09-20  Wilco Dijkstra  <wdijkstr@arm.com>

* config/aarch64/aarch64.c (aarch64_internal_mov_immediate): Cleanup
immediate generation code.

From-SVN: r227950

[AArch64][4/5] Remove redundant code

2015-09-20  Wilco Dijkstra  <wdijkstr@arm.com>

* config/aarch64/aarch64.c (aarch64_internal_mov_immediate): Remove
redundant immediate generation code.

From-SVN: r227949

[AArch64][3/5] Remove dead code

2015-09-20  Wilco Dijkstra  <wdijkstr@arm.com>

* config/aarch64/aarch64.c (aarch64_bitmasks): Remove.
(AARCH64_NUM_BITMASKS): Remove.
(aarch64_bitmasks_cmp): Remove.
(aarch64_build_bitmask_table): Remove.

From-SVN: r227948

[AArch64][2/5] Improve aarch64_internal_mov_immediate by using faster algorithm

2015-09-20  Wilco Dijkstra  <wdijkstr@arm.com>

* config/aarch64/aarch64.c (aarch64_internal_mov_immediate): Replace
slow immediate matching loops with a faster algorithm.

From-SVN: r227947

[AArch64][1/5] Reimplement aarch64_bitmask_imm

2015-09-20  Wilco Dijkstra  <wdijkstr@arm.com>

* config/aarch64/aarch64.c (aarch64_bitmask_imm): Reimplement using
faster algorithm.

From-SVN: r227946

pr43417.c: Move target independent test to ...

gcc/testsuite/
* gcc.target/sh/pr43417.c: Move target independent test to ...
* gcc.c-torture/compile/pr43417.c: ... here.

From-SVN: r227945

sh.exp (check_effective_target_sh4a, [...]): New effective target checks.

gcc/testsuite/
* gcc.target/sh/sh.exp (check_effective_target_sh4a,
check_effective_target_big_endian, check_effective_target_little_endian,
check_effective_target_any_fpu, check_effective_target_double_fpu,
check_effective_target_use_single_only_fpu,
check_effective_target_default_single_fpu,
check_effective_target_no_fpu, check_effective_target_has_xf_regs,
check_effective_target_has_fsca, check_effective_target_has_fsrra,
check_effective_target_has_fpchg, check_effective_target_has_dyn_shift,
check_effective_target_fmovd_enabled,
check_effective_target_has_privileged, check_effective_target_has_pref,
check_effective_target_banked_r0r7_isr,
check_effective_target_stack_save_isr): New effective target checks.
* gcc.target/sh/pr51244-16.c: Merge into pr51244-15.c.
* gcc.target/sh/pr51244-20-sh2a.c: Merge into pr51244-20.c.
* gcc.target/sh/pr51244-3.c: Merge into pr51244-2.c
* gcc.target/sh/pr54089-5.c: Merge into pr54089-4.c.
* gcc.target/sh/20080410-1.c: Use new effective target checks.
* gcc.target/sh/attr-isr-nosave_low_regs.c: Likewise.
* gcc.target/sh/attr-isr.c: Likewise.
* gcc.target/sh/fpul-usage-1.c: Likewise.
* gcc.target/sh/hiconst.c: Likewise.
* gcc.target/sh/mfmovd.c: Likewise.
* gcc.target/sh/pr21255-3.c: Likewise.
* gcc.target/sh/pr33135-1.c: Likewise.
* gcc.target/sh/pr33135-2.c: Likewise.
* gcc.target/sh/pr33135-3.c: Likewise.
* gcc.target/sh/pr33135-4.c: Likewise.
* gcc.target/sh/pr39423-2.c: Likewise.
* gcc.target/sh/pr49880-4.c: Likewise.
* gcc.target/sh/pr49880-5.c: Likewise.
* gcc.target/sh/pr50749-sf-postinc-1.c: Likewise.
* gcc.target/sh/pr50749-sf-postinc-2.c: Likewise.
* gcc.target/sh/pr50749-sf-postinc-3.c: Likewise.
* gcc.target/sh/pr50749-sf-postinc-4.c: Likewise.
* gcc.target/sh/pr50749-sf-predec-1.c: Likewise.
* gcc.target/sh/pr50749-sf-predec-2.c: Likewise.
* gcc.target/sh/pr50749-sf-predec-3.c: Likewise.
* gcc.target/sh/pr50749-sf-predec-4.c: Likewise.
* gcc.target/sh/pr50751-2.c: Likewise.
* gcc.target/sh/pr50751-3.c: Likewise.
* gcc.target/sh/pr50751-5.c: Likewise.
* gcc.target/sh/pr50751-6.c: Likewise.
* gcc.target/sh/pr50751-8.c: Likewise.
* gcc.target/sh/pr51244-15.c: Likewise.
* gcc.target/sh/pr51244-2.c: Likewise.
* gcc.target/sh/pr51244-20.c: Likewise.
* gcc.target/sh/pr51244-6.c: Likewise.
* gcc.target/sh/pr52483-4.c: Likewise.
* gcc.target/sh/pr53511-1.c: Likewise.
* gcc.target/sh/pr53512-1.c: Likewise.
* gcc.target/sh/pr53512-2.c: Likewise.
* gcc.target/sh/pr53512-3.c: Likewise.
* gcc.target/sh/pr53512-4.c: Likewise.
* gcc.target/sh/pr53513-1.c: Likewise.
* gcc.target/sh/pr54089-2.c: Likewise.
* gcc.target/sh/pr54089-3.c: Likewise.
* gcc.target/sh/pr54089-4.c: Likewise.
* gcc.target/sh/pr54602-2.c: Likewise.
* gcc.target/sh/pr54602-3.c: Likewise.
* gcc.target/sh/pr54602-4.c: Likewise.
* gcc.target/sh/pr54680.c: Likewise.
* gcc.target/sh/pr55303-1.c: Likewise.
* gcc.target/sh/pr55303-2.c: Likewise.
* gcc.target/sh/pr55303-3.c: Likewise.
* gcc.target/sh/pr56547-1.c: Likewise.
* gcc.target/sh/pr56547-2.c: Likewise.
* gcc.target/sh/pr61195.c: Likewise.
* gcc.target/sh/pr61996.c: Likewise.
* gcc.target/sh/pr6526.c: Likewise.
* gcc.target/sh/pragma-isr-nosave_low_regs.c: Likewise.
* gcc.target/sh/pragma-isr-trapa2.c: Likewise.
* gcc.target/sh/prefetch.c: Likewise.
* gcc.target/sh/rte-delay-slot.c: Likewise.
* gcc.target/sh/sh2a-band.c: Likewise.
* gcc.target/sh/sh2a-bclr.c: Likewise.
* gcc.target/sh/sh2a-bclrmem.c: Likewise.
* gcc.target/sh/sh2a-bld.c: Likewise.
* gcc.target/sh/sh2a-bor.c: Likewise.
* gcc.target/sh/sh2a-bset.c: Likewise.
* gcc.target/sh/sh2a-bsetmem.c: Likewise.
* gcc.target/sh/sh2a-bxor.c: Likewise.
* gcc.target/sh/sh2a-jsrn.c: Likewise.
* gcc.target/sh/sh2a-movi20s.c: Likewise.
* gcc.target/sh/sh2a-movrt.c: Likewise.
* gcc.target/sh/sh2a-resbank.c: Likewise.
* gcc.target/sh/sh2a-rtsn.c: Likewise.
* gcc.target/sh/sh2a-tbr-jump.c: Likewise.
* gcc.target/sh/sh4a-bitmovua.c: Likewise.
* gcc.target/sh/sh4a-cosf.c: Likewise.
* gcc.target/sh/sh4a-fsrra.c: Likewise.
* gcc.target/sh/sh4a-memmovua.c: Likewise.
* gcc.target/sh/sh4a-sincosf.c: Likewise.
* gcc.target/sh/sh4a-sinf.c: Likewise.

From-SVN: r227944

[PATCH] Fix 47679 by improving jump threading

PR tree-optimization/47679
* tree-ssa-dom.c (record_temporary_equivalences): No longer static.
* tree-ssa-dom.h (record_temporary_equivalences): Add prototype.
* tree-ssa-threadedge.c: Include tree-ssa-dom.h.
(thread_through_normal_block): Use record_temporary_equivalences.

        PR tree-optimization/47679
* g++.dg/warn/Wuninitialized-6.C: New test.

From-SVN: r227942

switch from gimple to gimple*

This renames the gimple_statement_base struct to gimple removes the
typedef of gimple_statement_base * to gimple, and then adjusts all of
the places that use the type.

gcc/ChangeLog:

2015-09-19  Trevor Saunders  <tbsaunde@tbsaunde.org>

* coretypes.h (gimple): Change typedef to be a forward
declaration.
* gimple.h (gimple_statement_base): rename to gimple.
* (all functions and types using gimple): Adjust.
* *.[ch]: Likewise.

gcc/cp/ChangeLog:

2015-09-19  Trevor Saunders  <tbsaunde@tbsaunde.org>

* cp-gimplify.c (gimplify_must_not_throw_expr): Adjust.

From-SVN: r227941

Daily bump.

From-SVN: r227940

xcoff.h (EH_FRAME_IN_DATA_SECTION): Delete.

2015-09-19  Andrew Dixie  <andrewd@gentrack.com>
            David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/xcoff.h (EH_FRAME_IN_DATA_SECTION): Delete.
        (ASM_PREFERRED_EH_DATA_FORMAT): Define.
        (EH_FRAME_THROUGH_COLLECT2): Define.
        (EH_TABLES_CAN_BE_READ_ONLY): Define.
        (ASM_OUTPUT_DWARF_PCREL): Define.
        (ASM_OUTPUT_DWARF_DATAREL): Define.

Co-Authored-By: David Edelsohn <dje.gcc@gmail.com>
From-SVN: r227937

re PR libstdc++/67361 (std::regex_error::what() should say something about the error_code)

PR libstdc++/67361
* include/bits/regex_error.h: Add __throw_regex_error that
supports string.
* include/bits/regex_automaton.h: Add more specific exception
messages.
* include/bits/regex_automaton.tcc: Likewise.
* include/bits/regex_compiler.h: Likewise.
* include/bits/regex_compiler.tcc: Likewise.
* include/bits/regex_scanner.h: Likewise.
* include/bits/regex_scanner.tcc: Likewise.

From-SVN: r227936

pa.c (pa_function_ok_for_sibcall): Remove special treatment of TARGET_ELF32.

* config/pa/pa.c (pa_function_ok_for_sibcall): Remove special treatment
of TARGET_ELF32.

From-SVN: r227933

Implement nested namespace definitions.

/cp
2015-09-18  Ville Voutilainen  <ville.voutilainen@gmail.com>

Implement nested namespace definitions.
* parser.c (cp_parser_namespace_definition): Grok nested namespace
definitions.

/testsuite
2015-09-18  Ville Voutilainen  <ville.voutilainen@gmail.com>

Implement nested namespace definitions.
* g++.dg/cpp1z/nested-namespace-def1.C: New.
* g++.dg/cpp1z/nested-namespace-def2.C: Likewise.
* g++.dg/cpp1z/nested-namespace-def3.C: Likewise.
* g++.dg/lookup/name-clash5.C: Adjust.
* g++.dg/lookup/name-clash6.C: Likewise.

From-SVN: r227932

[PATCH] avail_expr_stack is no longer file scoped

       PR tree-optimization/47679
        * tree-ssa-dom.c (avail_exprs_stack): No longer file scoped.  Move
        it here ...
        (dom_opt_dom_walker): New private member holding the avail_exprs_stack
        object.  Update constructor.
        (pass_dominator::execute):  Corresponding chagnes to declaration
        and initialization of avail_exprs_stack.  Update constructor call
        for dom_opt_dom_walker object.
        (lookup_avail_expr, record_cond): Accept additional argument.  Pass
        it down to children as needed.
        (record_equivalences_from_incoming_edge): Likewise.
        (eliminate_redundant_computations): Likewise.
        (record_equivalences_from_stmt): Likewise.
        (simplify_stmt_for_jump_threading): Likewise.
        (record_temporary_equivalences): Likewise.
        (optimize_stmt): Likewise.
        (dom_opt_dom_walker::thread_across_edge): Update access to
        avail_exprs_stack object and pass it to children as needed.
        (dom_opt_dom_walker::before_dom_children): Similarly.
        (dom_opt_dom_walker::after_dom_children): Similarly.
        * tree-ssa-threadedge.c (pfn_simplify): New typedef.
        (record_temporary_equivalences_from_stmts_at_dest): Use new typedef.
        Add avail_expr_stack argument.  Pass it to children as needed.
        (dummy_simplify): Likewise.
        (simplify_control_stmt_condition): Likewise.
        (thread_around_empty_blocks): Likewise.
        (thread_through_normal_block): Likewise.
        (thread_across_edge): Likewise.
        * tree-ssa-threadedge.h (thread_across_edge): Update prototype.
        * tree-vrp.c (simplify_stmt_for_jump_threading): Update.

From-SVN: r227931

Daily bump.

From-SVN: r227929

Misplaced return in previous commit.

2015-09-18  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* c-pragma.c (handle_pragma_diagnostic): Fix wrong return.

From-SVN: r227924

Use explicit locations for some warnings in c-pragma.c.

gcc/cp/ChangeLog:

2015-09-18  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* parser.c (pragma_lex): Add loc argument. Rearrange the code to
make it more similar to the C version.

gcc/c-family/ChangeLog:

2015-09-18  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* c-pragma.c (handle_pragma_diagnostic): Use explicit location
when warning.
* c-pragma.h (pragma_lex): Add optional loc argument.

gcc/c/ChangeLog:

2015-09-18  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* c-parser.c (pragma_lex): Add loc argument.

gcc/testsuite/ChangeLog:

2015-09-18  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* gcc.dg/pragma-diag-5.c: New test.

From-SVN: r227923

[PATCH] const_and_copies is no longer file scoped

        PR tree-optimization/47679
* tree-ssa-dom.c (const_and_copies): No longer file scoped.  Move
it here ...
(dom_opt_dom_walker): New private member holding the const_and_copies
object.  Update constructor.
(pass_dominator::execute): Corresponding changes to declaration
and initialization of const_and_copies.  Update constructor call
for the dom_opt_dom_walker object.
(record_temporary_equivalences): Accept const_and_copies argument
pass it down to children as needed.
(record_equality): Likewise.
(record_equivalences_from_incoming_edge): Likewise.
(cprop_into_successor_phis, optimize_stmt): Likewise.
(eliminate_redundant_computations): Likewise.
(dom_opt_dom_walker::thread_across_edge): Update access to
const_and_copies object and pass it to children as needed.
(dom_opt_dom_walker::before_dom_children): Similarly.
(dom_opt_dom_walker::after_dom_children): Similarly.

From-SVN: r227922

[PATCH] avail_exprs is no longer file scoped

* tree-ssa-dom.c (avail_exprs): No longer file scoped.  Bury
it into the avail_exprs_stack class.
(pass_dominator::execute): Corresponding changes to declaration
and initialization of avail_exprs.  Pass avail_exprs to
dump_dominator_optimization_stats.
(record_cond): Extract avail_exprs from avail_exprs_stack.
(lookup_avail_expr): Similarly.
(htab_staticstics): Remove unnecessary prototype.  Move to earlier
position in file.
(dump_dominator_optimization_stats): Make static and prototype.
Add argument for the hash table to dump.
(debug_dominator_optimization_stats): Remove.
* tree-ssa-dom.h (dump_dominator_optimization_stats): Remove
prototype.
(debug_dominator_optimization_stats): Similarly.
* tree-ssa-scopedtables.h (class avail_exprs_stack): Add missing
"void" in prototype for pop_to_marker method.  Add accessor method
for the underlying avail_exprs table.

* tree-ssa-threadedge.c: Remove trailing whitespace.

From-SVN: r227921

pa-protos.h (pa_cint_ok_for_move): Change argument type to unsigned.

* config/pa/pa-protos.h (pa_cint_ok_for_move): Change argument type to
unsigned.
(pa_ldil_cint_p): Likewise.
* config/pa/pa.c (pa_cint_ok_for_move): likewise.
(pa_ldil_cint_p): Likewise. Change signed casts to unsigned.
Update callers.
* config/pa/pa.md: Likewise.

From-SVN: r227920

Move diagnostic_show_locus and friends out into a new source file

gcc/ChangeLog:
* Makefile.in (OBJS-libcommon): Add diagnostic-show-locus.o.
* diagnostic.c (adjust_line): Move to diagnostic-show-locus.c.
(diagnostic_show_locus): Likewise.
(diagnostic_print_caret_line): Likewise.
* diagnostic-show-locus.c: New file.

From-SVN: r227915

Update copyright.

From-SVN: r227912

dwarf2out.c (switch_to_eh_frame_section): Add ATTRIBUTE_UNUSED to "back" parameter.

        * dwarf2out.c (switch_to_eh_frame_section): Add ATTRIBUTE_UNUSED to
        "back" parameter. Declare label in #if block.

From-SVN: r227911

re PR middle-end/67619 (ICE at -O1 and above on x86_64-linux-gnu in int_mode_for_mode, at stor-layout.c:425)

PR middle-end/67619
* except.c (expand_builtin_eh_return): Use copy_addr_to_reg to copy
the address to a register.

testsuite/ChangeLog:

PR middle-end/67619
* gcc.dg/torture/pr67619.c: New test.

From-SVN: r227909

[PATCH] Break out phi-only cprop into its own file

PR tree-optimization/47679
* Makefile.in (OBJS): Add tree-ssa-phionlycprop.o
* tree-ssa-dom.c: Remove unnecessary header includes.
(remove_stmt_or_phi): Moved from here into tree-ssa-phionlycprop.c
(get_rhs_or_phi_arg, get_lhs_or_phi_result): Likewise.
(propagate_rhs_into_lhs, eliminate_const_or_copy): Likewise.
(eliminate_degenerate_phis_1, pass_phi_only_cprop): Likewise.
(pass_phi_only_cprop::execute): Likewise.
(make_pass_phi_only_cprop): Likewise.
* tree-ssa-phionlycprop.c: New file with moved code.  Eliminate
uses of file scoped statics by passing the required objects
as parameters wherever needed.

From-SVN: r227908

aix61.h (STARTFILE_SPEC): Add crtdbase.o.

        * config/rs6000/aix61.h (STARTFILE_SPEC): Add crtdbase.o.
        * config/rs6000/rs6000-protos.h (rs6000_asm_output_dwarf_pcrel):
        Declare.
        (rs6000_asm_output_dwarf_datarel): Declare.

Co-Authored-By: David Edelsohn <dje.gcc@gmail.com>
From-SVN: r227907

config.host (powerpc-ibm-aix*): Add crtdbase.o to extra_parts.

libgcc/
        * config.host (powerpc-ibm-aix*): Add crtdbase.o to extra_parts.
        * config/rs6000/crtdbase.S: New file.
        * config/rs6000/t-aix-cxa: Build crtdbase.o.

gcc/
        * defaults.h (EH_FRAME_SECTION_NAME): Depend on
        EH_FRAME_THROUGH_COLLECT2.
        * dwarf2asm.c (dw2_asm_output_encoded_addr_rtx): Add case for
        DW_EH_PE_datarel.
        * dwarf2out.c (switch_to_eh_frame_section): Use a read-only section
        even if EH_FRAME_SECTION_NAME is undefined.  Restrict special
        collect2 labels to EH_FRAME_THROUGH_COLLECT2.
        * except.c (switch_to_exception_section): Use a read-only section
        even if EH_FRAME_SECTION_NAME is undefined.
        * system.h (EH_FRAME_IN_DATA_SECTION): Poison.
        * collect2.c (write_c_file_stat): Provide dbase on AIX.
        (scan_prog_file): Don't export __dso_handle nor
        __gcc_unwind_dbase.
        * config/rs6000/aix.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.
        (EH_TABLES_CAN_BE_READ_ONLY): Define.
        (ASM_OUTPUT_DWARF_PCREL): Define.
        (ASM_OUTPUT_DWARF_DATAREL): Define.
        (EH_FRAME_THROUGH_COLLECT2): Define.
        (EH_FRAME_IN_DATA_SECTION): Delete.
        * config/rs6000/rs6000.c (rs6000_aix_asm_output_dwarf_pcrel): New.
        (rs6000_aix_asm_output_dwarf_datarel): New.
        (rs6000_xcoff_asm_init_sections): Don't set exception_section.
        * config/spu/spu-elf.h (EH_FRAME_IN_DATA_SECTION): Delete.
        (EH_FRAME_THROUGH_COLLECT2): Define.
        * config/i386/i386-interix.h (EH_FRAME_IN_DATA_SECTION): Delete.
        (EH_FRAME_THROUGH_COLLECT2): Define.
        (EH_TABLES_CAN_BE_READ_ONLY): Define.
        * doc/tm.texi.in (EH_FRAME_IN_DATA_SECTION): Delete.
        (EH_FRAME_THROUGH_COLLECT2): New.
        (ASM_OUTPUT_DWARF_DATAREL): New.
        * doc/tm.texi: Regenerate.

Co-Authored-By: David Edelsohn <dje.gcc@gmail.com>
From-SVN: r227906

dwarf2out.c (append_entry_to_tmpl_value_parm_die_table): Assert we're in early phase.

2015-09-18  Richard Biener  <rguenther@suse.de>

* dwarf2out.c (append_entry_to_tmpl_value_parm_die_table): Assert
we're in early phase.
(schedule_generic_params_dies_gen): Likewise.
(gen_remaining_tmpl_value_param_die_attribute): Do only as much
work as possible, retaining unhandled cases.
(gen_scheduled_generic_parms_dies): Set early-dwarf flag and
clear out generic_type_instances at the end.
(dwarf2out_finish): Move call to gen_scheduled_generic_parms_dies...
(dwarf2out_early_finish): ... here.  Do most of
gen_remaining_tmpl_value_param_die_attribute here.

From-SVN: r227905

Fix errors due to extra includes in extc++.h

* include/precompiled/extc++.h: Fix bootstrap error due to
unconditional inclusion of <ext/enc_filebuf.h>.
* include/ext/random: Check for definition of UINT32_C.

From-SVN: r227902

completely_scalarize arrays as well as records.

gcc/:

PR tree-optimization/67283
* tree-sra.c (type_consists_of_records_p): Rename to...
(scalarizable_type_p): ...this, add case for ARRAY_TYPE.
(completely_scalarize_record): Rename to...
(completely_scalarize): ...this, add ARRAY_TYPE case, move some code to:
(scalarize_elem): New.
(analyze_all_variable_accesses): Follow renamings.

gcc/testsuite/:

* gcc.dg/tree-ssa/sra-15.c: New.
* gcc.dg/tree-ssa/sra-16.c: New.

From-SVN: r227901

dwarf2out.c (add_location_or_const_value_attribute): Do nothing in early-dwarf.

2015-09-18  Richard Biener  <rguenther@suse.de>

* dwarf2out.c (add_location_or_const_value_attribute): Do nothing
in early-dwarf.

From-SVN: r227899

re PR tree-optimization/66142 (Loop is not vectorized because not sufficient support for GOMP_SIMD_LANE)

2015-09-18  Richard Biener  <rguenther@suse.de>

PR tree-optimization/66142
* fold-const.c (operand_equal_p): When OEP_ADDRESS_OF
treat MEM[&x] and x the same.
* tree-ssa-sccvn.h (vn_reference_fold_indirect): Remove.
* tree-ssa-sccvn.c (vn_reference_fold_indirect): Return true
when we simplified sth.
(vn_reference_maybe_forwprop_address): Likewise.
(valueize_refs_1): When we simplified through
vn_reference_fold_indirect or vn_reference_maybe_forwprop_address
set valueized_anything to true.
(vn_reference_lookup_3): Use stmt_kills_ref_p to see whether
one ref kills the other instead of just a offset-based test.
* tree-ssa-alias.c (stmt_kills_ref_p): Use OEP_ADDRESS_OF
for the operand_equal_p test to compare bases and also compare
sizes.

From-SVN: r227896

Daily bump.

From-SVN: r227892

debug.cc: Include <cstdio>.

2015-09-17  Catherine Moore  <clm@codesourcery.com>

        * src/c++11/debug.cc: Include <cstdio>.

From-SVN: r227888

Include <cerrno> in src/c++11/random.cc

2015-09-17  Gerald Pfeifer  <gerald@pfeifer.com>

* src/c++11/random.cc: Include <cerrno>.

From-SVN: r227887

re PR sanitizer/64078 (FAIL: c-c++-common/ubsan/object-size-9.c)

2015-09-17  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR sanitizer/64078
        * c-c++-common/ubsan/object-size-9.c (s): Add alignment attribute.
        (f2, f3): Make the function static.
        * c-c++-common/ubsan/object-size-10.c (a, b): Add alignment attribute.

From-SVN: r227886

2015-09-17  François Dumont  <fdumont@gcc.gnu.org>

* include/debug/formatter.h
(_Error_formatter::_Parameter::_M_print_field): Deprecate.
(_Error_formatter::_Parameter::_M_print_description): Likewise.
(_Error_formatter::_M_format_word): Likewise.
(_Error_formatter::_M_print_word): Likewise.
(_Error_formatter::_M_print_string): Likewise.
(_Error_formatter::_M_get_max_length): Likewise.
(_Error_formatter::_M_max_length): Delete.
(_Error_formatter::_M_indent): Likewise.
(_Error_formatter::_M_column): Likewise.
(_Error_formatter::_M_first_line): Likewise.
(_Error_formatter::_M_wordwrap): Likewise.
* src/c++11/debug.cc: Adapt.

From-SVN: r227885

Implement N4295 fold-expressions.

* cp-tree.def: Add UNARY_LEFT_FOLD_EXPR, UNARY_RIGHT_FOLD_EXPR,
BINARY_LEFT_FOLD_EXPR, BINARY_RIGHT_FOLD_EXPR.
* cp-objcp-common.c (cp_common_init_ts): Handle them.
* cp-tree.h (FOLD_EXPR_CHECK, BINARY_FOLD_EXPR_CHECK, FOLD_EXPR_P)
(FOLD_EXPR_MODIFY_P, FOLD_EXPR_OP, FOLD_EXPR_PACK, FOLD_EXPR_INIT): New.
* parser.c (cp_parser_skip_to_closing_parenthesis): Split out...
(cp_parser_skip_to_closing_parenthesis_1): This function.  Change
or_comma parameter to or_ttype.
(cp_parser_fold_operator, cp_parser_fold_expr_p)
(cp_parser_fold_expression): New.
(cp_parser_primary_expression): Use them.
* pt.c (expand_empty_fold, fold_expression, tsubst_fold_expr_pack)
(tsubst_fold_expr_init, expand_left_fold, tsubst_unary_left_fold)
(tsubst_binary_left_fold, expand_right_fold)
(tsubst_unary_right_fold, tsubst_binary_right_fold): New.
(tsubst_copy): Use them.
(type_dependent_expression_p): Handle fold-expressions.
* semantics.c (finish_unary_fold_expr)
(finish_left_unary_fold_expr, finish_right_unary_fold_expr)
(finish_binary_fold_expr): New.

Co-Authored-By: Jason Merrill <jason@redhat.com>
From-SVN: r227883

posix.c (backtrace_open): Cast second argument of open() to int.

2015-09-17  Ian Lance Taylor  <iant@google.com>

        * posix.c (backtrace_open): Cast second argument of open() to int.

From-SVN: r227881

arm.md (*call_value_symbol): Fix operand for interworking.

2015-09-17  Christian Bruel  <christian.bruel@st.com>

* config/arm/arm.md (*call_value_symbol): Fix operand for interworking.

From-SVN: r227880

* gcc-interface/trans.c (emit_check): Do not touch TREE_SIDE_EFFECTS.

From-SVN: r227879

Handle alignment in __atomic_is_lock_free

gcc:

2015-09-17  Richard Henderson  <rth@redhat.com>

PR libstdc++/65913
* builtins.c (fold_builtin_atomic_always_lock_free): Handle fake
pointers that encode the alignment of the object.

libstdc++-v3:

2015-09-17  Jonathan Wakely  <jwakely@redhat.com>

PR libstdc++/65913
* include/bits/atomic_base.h (__atomic_base<_TTp>::is_lock_free(),
__atomic_base<_PTp*>::is_lock_free()): Call the built-in with the
immediate pointer value, not a variable.
* include/std/atomic (atomic<T>::is_lock_free()): Likewise.
* testsuite/29_atomics/atomic/65913.cc: New.

From-SVN: r227878

re PR rtl-optimization/66790 (Invalid uninitialized register handling in REE)

PR rtl-optimization/66790
* df-problems.c (LIVE): Amend documentation.

From-SVN: r227874

Remove non-deterministic part of canonical() test

* testsuite/experimental/filesystem/operations/canonical.cc: Remove
non-deterministic part of the test.

From-SVN: r227873

Make std::random_device retry after short reads

PR libstdc++/65142
* src/c++11/random.cc (random_device::_M_getval()): Retry after short
reads.

From-SVN: r227872

Remove redundant conditional expressions in <system_error>

* include/std/system_error (error_code::operator bool(),
error_condition::operator bool()): Remove redundant conditional
expression.

From-SVN: r227871

Only do shrink_to_fit() when exceptions enabled

* include/bits/allocator.h (__shrink_to_fit_aux<T, true>::_S_do_it):
Do nothing if exceptions are disabled.
* include/bits/basic_string.h (basic_string::shrink_to_fit): Likewise.

From-SVN: r227870

Split up optabs.[hc]

optabs.[hc] is a bit of a behemoth.  It includes basic functions for querying
what a target can do, related tree- and gimple-level query functions,
related rtl-level query functions, and the functions that actually
generate code.  Some gimple optimisations therefore need:

#include "insn-config.h"
#include "expmed.h"
#include "dojump.h"
#include "explow.h"
#include "emit-rtl.h"
#include "varasm.h"
#include "stmt.h"
#include "expr.h"

purely to query whether the target has support for a particular operation.

This patch splits optabs up as follows:

      - optabs-query.[hc]: IL-independent functions for querying what a target
          can do natively.
      - optabs-tree.[hc]: tree and gimple query functions (an extension of
          optabs-query.[hc]).
      - optabs-libfuncs.[hc]: optabs-specific libfuncs (an extension of
          libfuncs.h)
      - optabs.h: For now includes optabs-query.h and optabs-libfuncs.h.

Only two files outside optabs need to include both optabs.h and
optabs-tree.h: expr.c and function.c.  I think that's expected given
that both are related to expand.

It might be good to split optabs.h further, but this is already quite
a big patch.

I changed can_conditionally_move_p from returning an int to returning
a bool and fixed a few formatting glitches.  There should be no other
changes to the functions themselves.

gcc/
* Makefile.in (OBJS): Add optabs-libfuncs.o, optabs-query.o
and optabs-tree.o.
(GTFILES): Replace optabs.c with optabs-libfunc.c.
* genopinit.c (main): Add an include guard to insn-opinit.h.
Protect the rtx_code parts with NUM_RTX_CODE.
* optabs.h: Split parts out to...
* optabs-libfuncs.h, optabs-query.h, optabs-tree.h: ...these
new files.
* optabs.c: Split parts out to...
* optabs-libfuncs.c, optabs-query.c, optabs-tree.c: ...these
new files.
* cilk-common.c: Include optabs-query.h rather than optabs.h.
* fold-const.c: Likewise.
* target-globals.c: Likewise.
* tree-if-conv.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Include optabs-tree.h rather than
optabs.h.  Remove unncessary include files.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vrp.c: Likewise.
* toplev.c: Include optabs-query.h and optabs-libfuncs.h
rather than optabs.h.
* expr.c: Include optabs-tree.h.
* function.c: Likewise.

From-SVN: r227865

compiler: Issue channel type errors earlier.

    When asking for the type of a receive operation, the compiler would
    return an error type if the receive operator was being used on an
    invalid channel type and the error would be reported in a later pass.
    There are several ways that the type checking pass would not see
    the original node and fail to issue the error.  This patch modifies
    receive operations to give an error immediately once it is known that
    the channel type is invalid.

    Fixes golang/go#12323.

    Reviewed-on: https://go-review.googlesource.com/13987

From-SVN: r227863

re PR middle-end/65958 (-fstack-check breaks alloca on architectures using generic stack checking)

PR middle-end/65958
* config/arm/linux-elf.h (STACK_CHECK_STATIC_BUILTIN): Define.
* config/arm/arm-protos.h (output_probe_stack_range): Declare.
* config/arm/arm.c: Include common/common-target.h.
(use_return_insn): Return 0 if the static chain register was saved
above a non-APCS frame.
(arm_compute_static_chain_stack_bytes): Adjust for stack checking.
(struct scratch_reg): New.
(get_scratch_register_on_entry): New function.
(release_scratch_register_on_entry): Likewise.
(arm_emit_probe_stack_range): Likewise.
(output_probe_stack_range): Likewise.
(arm_expand_prologue): Factor out code dealing with the IP register
for nested function and adjust it for stack checking.
Invoke arm_emit_probe_stack_range if static builtin stack checking
is enabled.
(thumb1_expand_prologue): Sorry out if static builtin stack checking
is enabled.
(arm_expand_epilogue): Add the saved static chain register, if any, to
the amount of pre-pushed registers to pop.
(arm_frame_pointer_required): Return true if static stack checking is
enabled and we want to catch the exception with the EABI unwinder.
* config/arm/unspecs.md (UNSPEC_PROBE_STACK): New constant.
(UNSPEC_PROBE_STACK_RANGE): Likewise.
* config/arm/arm.md (probe_stack): New insn.
(probe_stack_range): Likewise.

From-SVN: r227860

genmatch.c (parser::parse_expr): Improve error message for mis-placed flags.

2015-09-17  Richard Biener  <rguenther@suse.de>

* genmatch.c (parser::parse_expr): Improve error message
for mis-placed flags.

From-SVN: r227859

passes.c (rest_of_decl_compilation): Always call early_global_decl debug hook when we created a varpool node.

2015-09-17  Richard Biener  <rguenther@suse.de>

* passes.c (rest_of_decl_compilation): Always call early_global_decl
debug hook when we created a varpool node.
* dwarf2out.c (dwarf2out_late_global_decl): When in LTO call
dwarf2out_early_global_decl, when not just add location or
value attributes to existing DIEs.

From-SVN: r227857

re PR fortran/52846 ([F2008] Support submodules)

2015-09-17  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/52846
PR fortran/67588
* module.c : Add static no_module_procedures.
(gfc_match_submodule): Correct memory leakage caused during the
freeing of use_lists.
(mio_symbol_attribute): Reset above if module procedure is
encountered.
(gfc_dump_module): Set above and exit without writing smod file
if it reset.
* gfortran.texi : Add section on submodule support.

2015-09-17  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/52846
* gfortran.dg/public_private_module_5.f90: Add module procedure
trigger_smod to ensure that the smod file is written.

From-SVN: r227855

[AArch64] Implement copysign[ds]f3

gcc/

* config/aarch64/aarch64.md (copysigndf3): New.
(copysignsf3): Likewise.

gcc/testsuite/

* gcc.target/aarch64/copysign_1.c: New.
* gcc.target/aarch64/copysign_2.c: New.

From-SVN: r227849

Fix LRA regressions on 64-bit SPARC.

gcc/
* config/sparc/sparc-protos.h (sparc_secondary_memory_needed):
Declare.
* config/sparc/sparc.c (sparc_secondary_memory_needed): New
function.
* config/sparc/sparc.h (SECONDARY_MEMORY_NEEDED): Use it.
(HARD_REGNO_CALLER_SAVE_MODE): Define.
* config/sparc/sparc.md (sethi_di_medlow, losum_di_medlow, seth44)
(setm44, setl44, sethh, setlm, sethm, setlo, embmedany_sethi)
(embmedany_losum, embmedany_brsum, embmedany_textuhi)
(embmedany_texthi, embmedany_textulo, embmedany_textlo): Do not
provide when flag_pic.

From-SVN: r227847

cp-tree.h (note_decl_for_pch): Remove.

2015-09-17  Richard Biener  <rguenther@suse.de>

* cp-tree.h (note_decl_for_pch): Remove.
* class.c (build_clone): Do not call note_decl_for_pch.
* semantics.c (finish_member_declaration): Likewise.
(note_decl_for_pch): Remove.
* decl2.c (c_parse_final_cleanups): Mangle all globals before
writing the PCH.

From-SVN: r227846

Fix build failure for SH.

* config/sh/sh.c (label_ref_list_d_pool): Adjust to object_allocator change.

From-SVN: r227845

re PR tree-optimization/66388 (Test gcc.target/i386/pr49781-1.c failed because of recent scev overflow patches.)

PR tree-optimization/66388
* tree-ssa-loop-ivopts.c (struct iv, iv_cand, ivopts_data): New
fields.
(dump_iv): Dump no_overflow information.
(alloc_iv): Initialize new field for struct iv.
(mark_bivs): Count number of no_overflow bivs.
(find_deriving_biv_for_expr, record_biv_for_address_use): New
functions.
(idx_find_step): Call new functions above.
(add_candidate_1, add_candidate): New paramter.
(add_iv_candidate_for_biv): Add sizetype cand for BIV.
(get_computation_aff): Simplify convertion of cand for BIV.
(get_computation_cost_at): Step cand's base if necessary.

From-SVN: r227844

tree-ssa-loop-niter.c (tree_simplify_using_condition_1): New parameter.

* tree-ssa-loop-niter.c (tree_simplify_using_condition_1): New
parameter.
(tree_simplify_using_condition): Ditto.
(simplify_using_initial_conditions): Ditto.
(loop_exits_before_overflow): Pass new argument to function
simplify_using_initial_conditions.  Remove case for type conversions
simplification.
* tree-ssa-loop-niter.h (simplify_using_initial_conditions): New
parameter.
* tree-scalar-evolution.c (simple_iv): Simplify type conversions
in iv base using loop initial conditions.

gcc/testsuite/ChangeLog
* gcc.dg/tree-ssa/loop-bound-2.c: New test.
* gcc.dg/tree-ssa/loop-bound-4.c: New test.
* gcc.dg/tree-ssa/loop-bound-6.c: New test.

From-SVN: r227843

[PATCH] Pass in avail_expr_stack and setup edge_infos earlier

PR tree-optimization/47679
* tree-ssa-dom.c (free_edge_info): Factored out of free_all_edge_infos.
(free_all_edge_infos): Use it.
(allocate_edge_info): Free preexisting edge info data.
(pass_dominator::execute): Set up initial edge info structures.
(dom_opt_dom_walker::thread_across_edge): Pass avail_expr_stack to
thread_across_edge.
* tree-ssa-threadedge.c (thread_across_edge): Accept new argument.  If
non-null, then push/pop markers appropriately.
* tree-ssa-threadedge.h (thread_across_edge): Update prototype.
* tree-vrp.c (identify_jump_threads): Pass NULL for new argument to
thread-across_edge.

From-SVN: r227842

[FT32] Fix memory address space predicate.

gcc/

* config/ft32/ft32.c Fix the memory address space predicate.

From-SVN: r227841

Daily bump.

From-SVN: r227840

re PR target/67573 ([SH] wrong code generated for libstdc++-v3/src/c++11/cxx11-shim_facets.cc at -mlra)

PR target/67573
* config/sh/sh.md: Add early clobber to scratch operand of *call_*pcrel
insn_and_split so not to CSE scratch reg.

From-SVN: r227837

Implement filesystem::canonical() without realpath

PR libstdc++/67173
* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check _XOPEN_VERSION
and PATH_MAX for _GLIBCXX_USE_REALPATH.
* config.h.in: Regenerate.
* configure: Regenerate.
* src/filesystem/ops.cc: (canonical) [!_GLIBCXX_USE_REALPATH]: Add
alternative implementation.
* testsuite/experimental/filesystem/operations/canonical.cc: New.
* testsuite/experimental/filesystem/operations/exists.cc: Add more
tests.
* testsuite/experimental/filesystem/operations/absolute.cc: Add test
variables.
* testsuite/experimental/filesystem/operations/copy.cc: Likewise.
* testsuite/experimental/filesystem/operations/current_path.cc:
Likewise.
* testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
* testsuite/experimental/filesystem/operations/status.cc: Likewise.
* testsuite/experimental/filesystem/operations/temp_directory_path.cc:
Likewise.

From-SVN: r227836

Move check_global_declaration from toplev.c to cgraphunit.c

Unfortunately, toplev.c is a kitchen sink of things that do not belong anywhere
in particular. For example, check_global_declarations is only used in
cgraphunit.c. Moving it there allows us to make it static and remove one call
to symtab_node::get.

gcc/ChangeLog:

2015-09-16  Manuel López-Ibáñez  <manu@gcc.gnu.org>

* toplev.h (check_global_declaration): Remove declaration.
* toplev.c (check_global_declaration): Move to ...
* cgraphunit.c: ... here. Make it static and pass a symtab_node *.
(analyze_functions): Update call.

From-SVN: r227835

compiler: Don't crash on erroneous channel reads.

    Fixes golang/go#12320.

    Reviewed-on: https://go-review.googlesource.com/13932

From-SVN: r227834

Fix endianness assumption in LRA.

gcc/
* lra-constraints.c (simplify_operand_subreg): Do not assume that
lowpart of a SUBREG has offset zero.

From-SVN: r227833