remove an unneeded as_a<rtx_insn *> ()

gcc/ChangeLog:

2015-10-10  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

* function.c (stack_protect_epilogue): Remove as_a<rtx_insn *> ()
call that isn't needed.

From-SVN: r228675

Daily bump.

From-SVN: r228672

Re: [PATCH] Update SSA_NAME manager to use two lists

* tree-ssanames.c (flush_ssaname_freelist): Use splice and truncate
rather than moving each name to the freelist individually.

From-SVN: r228668

mips.exp (mips_option_groups): Add -mframe-header-opt and -mno-frame-header-opt options.

2015-10-09  Steve Ellcey  <sellcey@imgtec.com>

* gcc.target/mips/mips.exp (mips_option_groups): Add -mframe-header-opt
and -mno-frame-header-opt options.
* gcc.target/mips/frame-header-1.c: New file.
* gcc.target/mips/frame-header-2.c: New file.
* gcc.target/mips/frame-header-3.c: New file.

From-SVN: r228667

config.gcc (mips*-*-*): Add frame-header-opt.o to extra_objs.

2015-10-05  Steve Ellcey  <sellcey@imgtec.com>

* config.gcc (mips*-*-*): Add frame-header-opt.o to extra_objs.
* frame-header-opt.c: New file.
* config/mips/mips-proto.h (mips_register_frame_header_opt):
Add prototype.
* config/mips/mips.c (mips_compute_frame_info): Check
optimize_call_stack flag.
(mips_option_override): Register new frame_header_opt pass.
  (mips_frame_info, mips_int_mask, mips_shadow_set,
machine_function): Move these types to...
* config/mips/mips.h: here.
(machine_function): Add does_not_use_frame_header and
optimize_call_stack fields.
* config/mips/t-mips (frame-header-opt.o): Add new make rule.
* doc/invoke.texi (-mframe-header-opt, -mno-frame-header-opt):
Document new flags.
* config/mips/mips.opt (mframe-header-opt): Add new option.

From-SVN: r228666

* config/i386/i386.c
(expand_set_or_movmem_prologue_epilogue_by_misaligned_moves): Use
ROUND_DOWN where applicable.

From-SVN: r228665

[PATCH] [6/n] Fix minor SSA_NAME leaks

* tree-vect-stmts.c (free_stmt_vec_info): Free the LHS of the
correct statement.

From-SVN: r228663

[PATCH][ARM]Add earlyclobber modifier for neon_(vtrn, vuzp, vzip)<mode>_insn rtx
pattern.

gcc/

2015-10-09  Renlin Li  <renlin.li@arm.com>

* config/arm/neon.md (neon_vuzp<mode>_insn): Add & modifier for
        operands[0] and operands[2].
        (neon_vtrn<mode>_insn): Likewise.
        (neon_vzip<mode>_insn): Likewise.

From-SVN: r228662

[PATCH V3][GCC] Algorithmic optimization in match and simplify

gcc/ChangeLog

* match.pd: ((X inner_op C0) outer_op C1) New pattern.
((X & C2) << C1): Expand to...
(X {&,^,|} C2 << C1): ...This.
((X & C2) >> C1): Expand to...
(X {&,^,|} C2 >> C1): ...This.

gcc/testsuite/ChangeLog

* gcc.dg/tree-ssa/forwprop-33.c: New.

Co-Authored-By: Hale Wang <hale.wang@arm.com>
From-SVN: r228661

AVX512: Fix embedded rounding/SAE specifier position.

gcc/

PR target/67895
* config/i386/sse.md (define_insn "sse_cvtsi2ss<round_name>"):
Adjust embedded rounding/SAE specifier position.
(define_insn "sse_cvtsi2ssq<round_name>"): Likewise.
(define_insn "cvtusi2<ssescalarmodesuffix>32<round_name>"): Likewise.
(define_insn "cvtusi2<ssescalarmodesuffix>64<round_name>"): Likewise.
(define_insn "sse2_cvtsi2sdq<round_name>"): Likewise.
(define_insn "avx512dq_rangep<mode><mask_name><round_saeonly_name>"):
Likewise.
(define_insn "avx512dq_ranges<mode><round_saeonly_name>"): Likewise.

gcc/testsuite

PR target/67895
* gcc.target/i386/avx512dq-vrangepd-1.c: Adjust assembly regexp.
* gcc.target/i386/avx512dq-vrangeps-1.c: Likewise.
* gcc.target/i386/avx512dq-vrangesd-1.c: Likewise.
* gcc.target/i386/avx512dq-vrangess-1.c: Likewise.
* gcc.target/i386/avx512f-vcvtsi2sd64-1.c: Likewise.
* gcc.target/i386/avx512f-vcvtsi2ss-1.c: Likewise.
* gcc.target/i386/avx512f-vcvtsi2ss64-1.c: Likewise.
* gcc.target/i386/avx512f-vcvtusi2sd64-1.c: Likewise.
* gcc.target/i386/avx512f-vcvtusi2ss-1.c: Likewise.
* gcc.target/i386/avx512f-vcvtusi2ss64-1.c: Likewise.

From-SVN: r228660

Testsuite: add dg-{begin|end}-multiline-output commands

This patch adds an easy way to write tests for expected multiline
output.  For example we can test carets and underlines for
a particular diagnostic with:

/* { dg-begin-multiline-output "" }
 typedef struct _GMutex GMutex;
                ^~~~~~~
   { dg-end-multiline-output "" } */

multiline.exp is used by prune.exp; hence we need to load it before
prune.exp via *load_gcc_lib* for the testsuites of the various
non-"gcc" support libraries (e.g. boehm-gc).

gcc/testsuite/ChangeLog:
* lib/multiline.exp: New file.
* lib/prune.exp: Load multiline.exp.
(prune_gcc_output): Call into multiline.exp to handle any
multiline output directives.
* lib/libgo.exp: Load multiline.exp before prune.exp, using
load_gcc_lib.

boehm-gc/ChangeLog:
* testsuite/lib/boehm-gc.exp: Load multiline.exp before
prune.exp, using load_gcc_lib.

libatomic/ChangeLog:
* testsuite/lib/libatomic.exp: Load multiline.exp before
prune.exp, using load_gcc_lib.

libgomp/ChangeLog:
* testsuite/lib/libgomp.exp: Load multiline.exp before prune.exp,
using load_gcc_lib.

libitm/ChangeLog:
* testsuite/lib/libitm.exp: Load multiline.exp before prune.exp,
using load_gcc_lib.

libvtv/ChangeLog:
* testsuite/lib/libvtv.exp: Load multiline.exp before prune.exp,
using load_gcc_lib.

From-SVN: r228655

[PR 67794] Also remap SSA_NAMEs defined in ASMs in IPA-SRA

2015-10-09  Martin Jambor  <mjambor@suse.cz>

tree-optimization/67794
* tree-sra.c (replace_removed_params_ssa_names): Do not distinguish
between types of state,ents but accept original definitions as a
parameter.
(ipa_sra_modify_function_body): Use FOR_EACH_SSA_DEF_OPERAND to
iterate over definitions.

testsuite/
        * gcc.dg/ipa/ipa-sra-10.c: Nw test.
        * gcc.dg/torture/pr67794.c: Likewise.

From-SVN: r228654

rs6000.c (rs6000_offload_options): New.

* config/rs6000/rs6000.c (rs6000_offload_options): New.
(TARGET_OFFLOAD_OPTIONS): New.

From-SVN: r228653

[PR67891] don't test is_gimple_reg after parm expansion

for  gcc/ChangeLog

PR middle-end/67891
* cfgexpand.c (set_parm_rtl): Drop is_gimple_reg test.

From-SVN: r228652

[PR67766] reorder handling of parallels, concats and promoted values in return

for  gcc/ChangeLog

PR middle-end/67766
* function.c (expand_function_end): Move return value
promotion past the handling of PARALLELs and CONCATs.

From-SVN: r228651

[PR67828] don't unswitch on default defs of non-parms

for  gcc/ChangeLog

PR rtl-optimizatoin/67828
* tree-ssa-loop-unswitch.c: Include tree-ssa.h.
(tree_may_unswitch_on): Don't unswitch on expressions
involving undefined values.

for  gcc/testsuite/ChangeLog

PR rtl-optimization/67828
* gcc.dg/torture/pr67828.c: New.

From-SVN: r228650

* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r228649

genmatch.c (print_operand): Fix formatting.

2015-10-09  Richard Biener  <rguenther@suse.de>

* genmatch.c (print_operand): Fix formatting.
(dt_node::append_simplify): Warn for multiple simplifiers
that match the same pattern.
* match.pd (log (exp @0)): Remove duplicates.

From-SVN: r228648

fix Changelog entry removed at revision 228479

From-SVN: r228647

Missed ChangeLog for previous libstdc++-v3 commit

Add include/experimental/bits dir

* include/experimental/erase_if.h: Move to ...
* include/experimental/bits/erase_if.h: New.
* include/experimental/fs_dir.h: Move to ...
* include/experimental/bits/fs_dir.h: New.
* include/experimental/fs_fwd.h: Move to ...
* include/experimental/bits/fs_fwd.h: New.
* include/experimental/fs_ops.h: Move to ...
* include/experimental/bits/fs_ops.h: New.
* include/experimental/fs_path.h: Move to ...
* include/experimental/bits/fs_path.h: New.
* include/experimental/string_view.tcc: Move to ...
* include/experimental/bits/string_view.tcc: New.
* include/Makefile.am: Add include/experimental/bits sub-directory.
* include/Makefile.in: Regenerate.
* include/experimental/filesystem: Adjust includes.
* include/experimental/map: Likewise.
* include/experimental/set: Likewise.
* include/experimental/string_view: Likewise.
* include/experimental/unordered_map: Likewise.
* include/experimental/unordered_set: Likewise.

From-SVN: r228646

Add include/experimental/bits dir

From-SVN: r228645

[PATCH PR target/67366 2/2] [gimple-fold.c] Support movmisalign optabs in gimple-fold.c

This patch by Richard allows for movmisalign optabs to be supported
in gimple-fold.c. This caused a bit of pain in the testsuite with strlenopt-8.c
in conjunction with the ARM support for movmisalign_optabs as the test
was coded up to do different things depending on whether the target
supported misaligned access or not. However now with unaligned access
being allowed for different levels of the architecture in the arm backend,
the concept of the helper function non_strict_align mapping identically
to the definition of STRICT_ALIGNMENT disappears.

Adjusted thusly for ARM. The testsuite/lib changes were tested with an
arm-none-eabi multilib that included architecture variants that did not
support unaligned access and architecture variants that did.

The testing matrix for this patch was:

1. x86_64 bootstrap and regression test - no regressions.
2. armhf bootstrap and regression test - no regressions.
3. arm-none-eabi cross build and regression test for

{-marm/-march=armv7-a/-mfpu=vfpv3-d16/-mfloat-abi=softfp}
{-mthumb/-march=armv8-a/-mfpu=crypto-neon-fp-armv8/-mfloat-abi=hard}
{-marm/-mcpu=arm7tdmi/-mfloat-abi=soft}
{-mthumb/-mcpu=arm7tdmi/-mfloat-abi=soft}

with no regressions.

Ok to apply ?

2015-10-09  Richard Biener  <rguenth@suse.de>

PR target/67366
* gimple-fold.c (optabs-query.h): Include
(gimple_fold_builtin_memory_op): Allow unaligned stores
when movmisalign_optabs are available.

2015-10-09  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

PR target/67366
* lib/target-supports.exp (check_effective_target_non_strict_align):
Adjust for arm*-*-*.
* gcc.target/arm/pr67366.c: New test.

From-SVN: r228644

[Patch PR target/67366 1/2] [ARM] - Add movmisalignhi / si patterns

This adds movmisalignhi and movmisalignsi expanders when unaligned
access is allowed by the architecture. This allows the mid-end
to expand to misaligned loads and stored.

Compared code generated for the Linux kernel and
it changes code generation for a handful of files all for the better
basically by reducing the stack usage.

Tested by :

1. armhf bootstrap and regression test - no regressions.
2.. arm-none-eabi cross build and regression test for

    {-marm/-march=armv7-a/-mfpu=vfpv3-d16/-mfloat-abi=softfp}
    {-mthumb/-march=armv8-a/-mfpu=crypto-neon-fp-armv8/-mfloat-abi=hard}
    {-marm/-mcpu=arm7tdmi/-mfloat-abi=soft}
    {-mthumb/-mcpu=arm7tdmi/-mfloat-abi=soft}

Will apply to trunk once 2/2 is approved.

regards
Ramana

2015-10-09  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        PR target/67366
        * config/arm/arm.md (movmisalign<mode>): New.
        * config/arm/iterators.md (HSI): New.

From-SVN: r228643

* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r228642

Make-lang.in: Make sure that GNAT1_OBJS and not just GNAT1_ADA_OBJS are compiled only after...

* gcc-interface/Make-lang.in: Make sure that GNAT1_OBJS and not just
GNAT1_ADA_OBJS are compiled only after generated files are created.

From-SVN: r228636

re PR middle-end/67891 (FAIL: gcc.dg/pr43300.c (internal compiler error) on alpha-linux-gnu)

2015-10-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/67891
* gimple-match.h (gimple_simplified_result_is_gimple_val):
New helper.
(gimple_resimplify1): Declare.
(gimple_resimplify2): Likewise.
(gimple_resimplify3): Likewise.
* gimple-match-head.c (gimple_resimplify1): Export.
(gimple_resimplify2): Likewise.
(gimple_resimplify3): Likewise.
(maybe_push_res_to_seq): Use gimple_simplified_result_is_gimple_val.
* gimple-fold.c (gimple_fold_stmt_to_constant_1): Likewise.
* tree-ssa-sccvn.c (visit_reference_op_load): Use gimple_resimplify1
to avoid creating stmts without VN info.

* gcc.dg/tree-ssa/pr67891.c: New testcase.

From-SVN: r228635

[PATCH] [5/n] Fix minor SSA_NAME leaks

* value-prof.c (gimple_ic): Add missing calls to unlink_stmt_vdef
and release_ssa_name in two places.
(gimple_stringop_fixed_value): Similarly.

From-SVN: r228632

Daily bump.

From-SVN: r228631

ipa-icf.c (sem_item::compare_symbol_references): Fix use of availability.

* ipa-icf.c (sem_item::compare_symbol_references): Fix use
of availability.

From-SVN: r228628

[PATCH] [4/n] Fix minor SSA_NAME leaks

        * tree-ssa-loop-im.c (rewrite_bittest): Add missing call to
        release_defs.

From-SVN: r228627

[PATCH] [4/n] Fix minor SSA_NAME leaks

* tree-ssa-loop-im.c (rewrite_bittest): Add missing call to
release_defs.

From-SVN: r228626

[PATCH] [3/n] Fix minor SSA_NAME leaks

* tree-stdarg.c (expand_ifn_va_arg_1): Add missing call to
unlink_stmt_vdef and release_ssa_name_fn.

From-SVN: r228625

[PATCH] [2/n] Fix minor SSA_NAME leaks

* tree-ssa-dse.c (dse_optimize_stmt): Add missing call to
release_defs.

From-SVN: r228624

liboffloadmic: Add missed checks for malloc and strdup return values

liboffloadmic/
* runtime/offload_engine.cpp (Engine::init_process): Use strdup instead
of sizeof+malloc+sprintf, check for return value.
* runtime/offload_env.cpp (MicEnvVar::get_env_var_kind): Check for
strdup return value.
* runtime/offload_host.cpp (__offload_init_library_once): Check for
strdup return value.  Fix size calculation of COI_HOST_THREAD_AFFINITY.
* runtime/emulator/coi_device.cpp (COIProcessWaitForShutdown): Check for
malloc return value.

From-SVN: r228622

Round up the SSE register save area only if needed

There is is no point to round up the SSE register save area to 16 bytes if
the incoming stack boundary is less than 16 bytes.

* config/i386/i386.c (ix86_compute_frame_layout): Round up the
SSE register save area to 16 bytes only if the incoming stack
boundary is no less than 16 bytes.

From-SVN: r228621

[PATCH] [1/n] Fix minor SSA_NAME leaks

* tree-ssa-phiopt.c (factor_out_conversion): Add missing calls to
release_ssa_name.  Fix typo in comment.

From-SVN: r228619

nvptx.h (struct machine_function): Add comment.

* config/nvptx/nvptx.h (struct machine_function): Add comment.
* config/nvptx/nvptx.c (nvptx_declare_function_name): Functions
may return pointer as well as in memory.
(nvptx_output_return): Likewise.

From-SVN: r228618

Move sqrt and cbrt simplifications to match.pd

This patch moves the sqrt and cbrt simplification rules to match.pd.
builtins.c now only does the constant folding.

Bootstrapped & regression-tested on x86_64-linux-gnu.

gcc/
* builtins.c (fold_builtin_sqrt, fold_builtin_cbrt): Delete.
(fold_builtin_1): Update accordingly.  Handle constant arguments here.
* match.pd: Add rules previously handled by fold_builtin_sqrt
and fold_builtin_cbrt.

gcc/testsuite/
* gcc.dg/builtins-47.c: Test the optimized dump instead.

From-SVN: r228616

Make tree_expr_nonnegative_warnv_p recurse into SSA names

The upcoming patch to move sqrt and cbrt simplifications to match.pd
caused a regression because the (abs @0)->@0 simplification didn't
trigger for:

        (abs (convert (abs X)))

The simplification is based on tree_expr_nonnegative_p, which at
the moment just gives up if it sees an SSA_NAME.

This patch makes tree_expr_nonnegative_p recurse into SSA name
definitions, but limits the depth of recursion to a small number
for the reason mentioned in the comment (adapted from an existing
comment in gimple_val_nonnegative_real_p).  The patch reuses code
in tree-vrp.c, moving it to gimple-fold.c.  It also replaces calls
to gimple_val_nonnegative_real_p with calls to tree_expr_nonnegative_p.

A knock-on effect is that we can now prove _i_589 < 0 is false in
sequences like:

      i_1917 = ASSERT_EXPR <i_1075, i_1075 == 0>;
      _i_589 = (const int) i_1917;
      _i_1507 = ASSERT_EXPR <_i_589, _i_589 < 0>;

This defeats an assert in tree-vrp.c that ASSERT_EXPR conditions
are never known to be false.  Previously the assert only ever used
local knowledge and so would be limited to cases like x != x for
integer x.  Now that we use global knowledge it's possible to prove
the assertion condition is false in blocks that are in practice
unreachable.  The patch therefore removes the assert.

Bootstrapped & regression-tested on x86_64-linux-gnu.  I didn't write
a specific test because this is already covered by the testsuite if
the follow-on patch is also applied.

gcc/
* params.def (PARAM_MAX_SSA_NAME_QUERY_DEPTH): New param.
* doc/invoke.texi (--param max-ssa-name-query-depth): Document.
* fold-const.h (tree_unary_nonnegative_warnv_p)
(tree_single_nonnegative_warnv_p, tree_call_nonnegative_warnv_p)
(tree_expr_nonnegative_warnv_p): Add depth parameters.
* fold-const.c: Include gimple-fold.h and params.h.
(tree_ssa_name_nonnegative_warnv_p): New function.
(tree_unary_nonnegative_warnv_p, tree_binary_nonnegative_warnv_p)
(tree_single_nonnegative_warnv_p, tree_call_nonnegative_warnv_p)
(tree_invalid_nonnegative_warnv_p, tree_expr_nonnegative_warnv_p):
Add a depth parameter and increment it for recursive calls to
tree_expr_nonnegative_warnv_p.  Use tree_ssa_name_nonnegative_warnv_p
to handle SSA names.
* gimple-fold.h (gimple_val_nonnegative_real_p): Delete.
(gimple_stmt_nonnegative_warnv_p): Declare.
* tree-vrp.c (remove_range_assertions): Remove assert that condition
cannot be proven false.
(gimple_assign_nonnegative_warnv_p, gimple_call_nonnegative_warnv_p)
(gimple_stmt_nonnegative_warnv_p): Move to...
* gimple-fold.c: ...here.  Add depth parameters and pass them
down to the tree routines.  Accept statements that aren't
assignments or calls but just return false for them.
(gimple_val_nonnegative_real_p): Delete.
* tree-ssa-math-opts.c (gimple_expand_builtin_pow): Use
tree_expr_nonnegative_p instead of gimple_val_nonnegative_real_p.
Check HONOR_NANs first.

From-SVN: r228614

Fix Solaris bootstrap

2015-10-08  Martin Jambor  <mjambor@suse.cz>

* ipa-cp.c (meet_with_1): Make the argument of abs signed.  Remove
unnecessary MIN.

From-SVN: r228607

cp-tree.h (SIMPLE_TARGET_EXPR_P): New.

* cp-tree.h (SIMPLE_TARGET_EXPR_P): New.
* init.c (get_nsdmi): Use it.
* typeck2.c (massage_init_elt): Use it.

From-SVN: r228606

format

From-SVN: r228605

* zh_TW.po: Update.

From-SVN: r228603

re PR c++/67557 (Calling copy constructor of base class in constructor of derived class produces crashing code)

PR c++/67557

* call.c (is_base_field_ref): New.
(unsafe_copy_elision_p): New.
(build_over_call): Use it.

From-SVN: r228602

tree-vect-loop.c (vect_analyze_loop_operations): Skip virtual phi in the tail of outer-loop.

gcc/

* tree-vect-loop.c (vect_analyze_loop_operations): Skip virtual phi
in the tail of outer-loop.

gcc/testsuite/

* gcc.dg/vect/vect-outer-simd-3.c: New test.

From-SVN: r228601

rs6000.c (rs6000_xcoff_debug_unwind_info): Always return UI_NONE.

* config/rs6000/rs6000.c (rs6000_xcoff_debug_unwind_info): Always
return UI_NONE.

From-SVN: r228600

tree-ssa-loop-unswitch.c: Include "gimple-iterator.h" and "cfghooks.h"...

gcc/

* tree-ssa-loop-unswitch.c: Include "gimple-iterator.h" and
"cfghooks.h", add prototypes for introduced new functions.
(tree_ssa_unswitch_loops): Use from innermost loop iterator, move all
checks on ability of loop unswitching to tree_unswitch_single_loop;
invoke tree_unswitch_single_loop or tree_unswitch_outer_loop depending
on innermost loop check.
(tree_unswitch_single_loop): Add all required checks on ability of
loop unswitching under zero recursive level guard.
(tree_unswitch_outer_loop): New function.
(find_loop_guard): Likewise.
(empty_bb_without_guard_p): Likewise.
(used_outside_loop_p): Likewise.
(get_vop_from_header): Likewise.
(hoist_guard): Likewise.
(check_exit_phi): Likewise.

gcc/testsuite/

* gcc.dg/loop-unswitch-2.c: New test.
* gcc.dg/loop-unswitch-3.c: Likewise.
* gcc.dg/loop-unswitch-4.c: Likewise.

From-SVN: r228599

tree-ssa-reassoc.c (dump_ops_vector): Print newline after each ops element.

* tree-ssa-reassoc.c (dump_ops_vector): Print newline after each
ops element.

From-SVN: r228598

Dump only required dse1 file

2015-10-08  Tom de Vries  <tom@codesourcery.com>

* gcc.dg/dse.c: Only dump in dse1 pass.
* gcc.dg/tree-ssa/pr30375.c: Same.

From-SVN: r228597

S/390: Use create_tmp_var_raw in s390_atomic_assign_expand_fenv.

gcc/ChangeLog:

2015-10-08  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

PR c/65345
* config/s390/s390.c (s390_atomic_assign_expand_fenv): Use
create_tmp_var_raw instead of create_tmp_var.

From-SVN: r228594

Daily bump.

From-SVN: r228590

expr.c (store_expr_with_bounds): Handle aggregate moves from BLKmode.

* expr.c (store_expr_with_bounds): Handle aggregate moves from
BLKmode.
* gimple-expr.c (useless_type_conversion_p): Do not use TYPE_CANONICAL
to define gimple type system; compare aggregates only by size.

From-SVN: r228586

Re: [PATCH] Improve DOM's optimization of control statements

* tree-ssa-dom.c (optimize_stmt): Don't set LOOPS_NEED_FIXUP here.
* tree-ssa-threadupdate.c (remove_ctrl_stmt_and_useless_edges): Do it
here instead.  Tighten test to avoid setting LOOPS_NEED_FIXUP
unnecessarily.

@@ -1848,12 +1848,6 @@ optimize_stmt (basic_block bb, gimple_stmt_iterator si,

From-SVN: r228585

gather bbs and conditions in a single walk through dominators

Clean up the function to build scop's basic blocks and the function
that gathers the conditions under which a basic block is executed.  We remove
one traversal of the dominator tree.

This refactoring was triggered by the need of a vec<bb> of all the basic blocks
in a region.  We will use that vector in a patch that removes the out-of-ssa
translation of scalar dependences: we will iterate through the basic blocks of a
region to record scalar dependences crossing bbs or going out of the region.

The patch passes bootstrap and regtest on x86_64-linux.

2015-10-06  Aditya Kumar  <aditya.k7@samsung.com>
                Sebastian Pop  <s.pop@samsung.com>

                * graphite-dependences.c (scop_get_dependences): Do not use SCOP_BBS.
                * graphite-isl-ast-to-gimple.c (get_max_schedule_dimensions): Same.
                (generate_isl_schedule): Same.
                * graphite-optimize-isl.c (scop_get_domains): Same.
                (apply_schedule_map_to_scop): Same.
                * graphite-poly.c (print_iteration_domains): Same.
                (remove_gbbs_in_scop): Same.
                (new_scop): Same.
                (free_scop): Same.
                (print_scop): Same.
                * graphite-poly.h (struct scop): Rename bbs to pbbs.
                (SCOP_BBS): Remove.
                * graphite-scop-detection.c (compare_bb_depths): Remove.
                (graphite_sort_dominated_info): Remove.
                (try_generate_gimple_bb): Move out of scop_detection.
                (all_non_dominated_preds_marked_p): Remove.
                (build_scop_bbs_1): Remove.
                (build_scop_bbs): Remove.
                (nb_pbbs_in_loops): Do not use SCOP_BBS.
                (find_scop_parameters): Same.
                (sese_dom_walker): Rename gather_bbs.
                (before_dom_children): Call try_generate_gimple_bb and collect gbb
                and pbb.
                (build_scops): Call gather_bbs.
                * graphite-sese-to-poly.c (build_scop_scattering): Do not use SCOP_BBS.
                (add_conditions_to_constraints): Same.
                (build_scop_iteration_domain): Same.
                (build_scop_drs): Same.
                (new_pbb_from_pbb): Same.
                * sese.c (new_sese_info): Create bbs.
                * sese.h (struct sese_info_t): Add bbs.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r228581

xcoff.h (ASM_PREFERRED_EH_DATA_FORMAT): Use 64-bit encoding in 64-bit mode.

* config/rs6000/xcoff.h (ASM_PREFERRED_EH_DATA_FORMAT): Use 64-bit
encoding in 64-bit mode.

From-SVN: r228579

compiler: Don't make temporaries for constant operands.

    Fixes golang/go#12616.

    Reviewed-on: https://go-review.googlesource.com/14645

From-SVN: r228578

re PR target/66697 (Feature request: -mstackrealign and force_align_arg_pointer for x86_64)

PR target/66697
* config/i386/i386.c (ix86_option_override_internal): Always use
8-byte minimum stack boundary in 64-bit mode.
(ix86_compute_frame_layout): Remove assert on INCOMING_STACK_BOUNDARY.
(ix86_emit_save_reg_using_mov): Support unaligned SSE store.
Add a REG_CFA_EXPRESSION note if needed.
(ix86_emit_restore_sse_regs_using_mov): Support unaligned SSE load.
(ix86_handle_force_align_arg_pointer_attribute): New.
(ix86_minimum_incoming_stack_boundary): Remove TARGET_64BIT check.
(ix86_attribute_table): Set ix86_force_align_arg_pointer_string
with ix86_handle_force_align_arg_pointer_attribute.
* config/i386/i386.h (MIN_STACK_BOUNDARY): Set to BITS_PER_WORD.

testsuite/ChangeLog:

PR target/66697
* gcc.target/i386/20060512-1.c: Remove ia32 requirement.
(PUSH, POP): New defines.
(sse2_test): Use PUSH and POP to misalign runtime stack.
* gcc.target/i386/20060512-2.c: Remove ia32 requirement.

From-SVN: r228577

re PR go/67874 (fd_unix.go does not build when there is fcntl64 and no fcntl syscall)

PR go/67874
    net, runtime: Call C library fcntl function rather than syscall.Syscall.

    Not all systems define a fcntl syscall; some only have fcntl64.

    Fixes GCC PR go/67874.

    Reviewed-on: https://go-review.googlesource.com/15497

From-SVN: r228576

atomic-dg.exp (atomic_link_flags): Move flag setting to atomic_init.

* testsuite/lib/atomic-dg.exp (atomic_link_flags): Move flag setting
to atomic_init. (atomic_init): Restrict flags usage.

From-SVN: r228575

remove unused code

2015-10-07  Aditya Kumar  <aditya.k7@samsung.com>
                Sebastian Pop  <s.pop@samsung.com>

                * graphite-scop-detection.c (parameter_index_in_region): Remove
                use of SESE_ADD_PARAMS.
                (find_scop_parameters): Same.
                * sese.c (new_sese_info): Same.
                * sese.h (struct sese_info_t): Remove add_params.
                (SESE_ADD_PARAMS): Remove.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r228574

move graphite bookkeeping from sese to sese_info

2015-10-06  Aditya Kumar  <aditya.k7@samsung.com>
                Sebastian Pop  <s.pop@samsung.com>

                * graphite-isl-ast-to-gimple.c (translate_isl_ast_to_gimple): Use
                an sese_info_p.
                (copy_def): Same.
                (copy_internal_parameters): Same.
                (translate_isl_ast_to_gimple): Use an sese_l.
                (build_iv_mapping): Same.
                * graphite-poly.c (new_sese): Rename new_sese_info.
                (free_sese): Rename free_sese_info.
                * graphite-poly.h (struct scop): Use an sese_info_p.
                (scop_set_region): Same.
                * graphite-scop-detection.c (struct sese_l): Moved...
                (get_entry_bb): Moved...
                (get_exit_bb): Moved...
                (parameter_index_in_region_1): Use an sese_info_p.
                (parameter_index_in_region): Same.
                (scan_tree_for_params): Same.
                (find_params_in_bb): Same.
                (sese_dom_walker): Use an sese_l.
                * graphite-sese-to-poly.c (remove_invariant_phi): Same.
                (reduction_phi_p): Same.
                (parameter_index_in_region_1): Use an sese_info_p.
                (propagate_expr_outside_region): Use an sese_l.
                * graphite.c: Replace uses of SCOP_REGION.
                * sese.c (sese_record_loop): Use an sese_info_p.
                (build_sese_loop_nests): Same.
                (sese_build_liveouts_use): Same.
                (sese_build_liveouts_bb): Same.
                (sese_build_liveouts_bb): Same.
                (sese_bad_liveouts_use): Same.
                (sese_reset_debug_liveouts_bb): Same.
                (sese_build_liveouts): Same.
                (new_sese): Renamed new_sese_info.
                (free_sese): Renamed free_sese_info.
                (set_rename): Use an sese_info_p.
                (graphite_copy_stmts_from_block): Same.
                (copy_bb_and_scalar_dependences): Same.
                (outermost_loop_in_sese_1): Use an sese_l.
                (outermost_loop_in_sese): Same.
                (if_region_set_false_region): Use an sese_info_p.
                (move_sese_in_condition): Same.
                (scalar_evolution_in_region): Use an sese_l.
                * sese.h (struct sese_l): ... here.
                (SESE_ENTRY): Remove.
                (SESE_ENTRY_BB): Remove.
                (SESE_EXIT): Remove.
                (SESE_EXIT_BB): Remove.
                (sese_contains_loop): Use an sese_info_p.
                (sese_nb_params): Same.
                (bb_in_sese_p): Use an sese_l.
                (stmt_in_sese_p): Same.
                (defined_in_sese_p): Same.
                (loop_in_sese_p): Same.
                (sese_loop_depth): Same.
                (struct ifsese_s): Use an sese_info_p.
                (gbb_loop_at_index): Use an sese_l.
                (nb_common_loops): Same.
                (scev_analyzable_p): Same.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r228572

re PR sanitizer/67867 (UBSan bootstrap fails with error: ‘otype’ may be used uninitialized in this function [-Werror=maybe-uninitialized])

PR sanitizer/67867
* search.c (accessible_p): Initialize OTYPE to NULL_TREE.

From-SVN: r228569

Define x86 CALL_USED_REGISTERS_MASK

Define x86 CALL_USED_REGISTERS_MASK used on x86 CALL_USED_REGISTERS.

* config/i386/i386.c (ix86_conditional_register_usage): Use
CALL_USED_REGISTERS_MASK.
* config/i386/i386.h (CALL_USED_REGISTERS_MASK): New macro.

From-SVN: r228568

Check $READELF_FOR_TARGET for readelf in configure

Similar to as, ld, nm and objdump, gcc configure should check
$READELF_FOR_TARGET for readelf.

PR bootstrap/67385
* configure.ac (gcc_cv_readelf): Check $READELF_FOR_TARGET.
* configure: Regenerated.

From-SVN: r228567

re PR fortran/65889 ([6 Regressions] [OOP] ICE with sizeof a polymorphic variable.)

gcc/fortran/ChangeLog:

2015-10-07  Andre Vehreschild  <vehre@gcc.gnu.org>

PR fortran/65889
* trans-intrinsic.c (gfc_conv_intrinsic_sizeof): Handle pointer to and
on stack class objects as sizeof parameter.

gcc/testsuite/ChangeLog:

2015-10-07  Andre Vehreschild  <vehre@gcc.gnu.org>

PR fortran/65889
* gfortran.dg/sizeof_5.f90: New test.

From-SVN: r228566

Merge ix86_maybe_switch_abi with ix86_set_current_function

ix86_maybe_switch_abi is called to late during RTL expansion and we
use the stale information from compilation of the previous function.
aggregate_value_p uses call_used_regs.  aggregate_value_p is used by
IPA and return value optimization, which are called before
ix86_maybe_switch_abi is called.  This patch merges ix86_maybe_switch_abi
with ix86_set_current_function.

PR target/67850
* config/i386/i386.c (ix86_maybe_switch_abi): Merged with ...
(ix86_set_current_function): This.
(TARGET_EXPAND_TO_RTL_HOOK): Removed.

From-SVN: r228565

Check in forgotten test for fortran/65766

From-SVN: r228564

tree-vectorizer.h (stmt_vec_info_vec): Use vec<stmt_vec_info>.

2015-10-07  Richard Biener  <rguenther@suse.de>

* tree-vectorizer.h (stmt_vec_info_vec): Use vec<stmt_vec_info>.
(vinfo_for_stmt): Adjust.
(set_vinfo_for_stmt): Likewise.
* tree-vectorizer.c (stmt_vec_info_vec): Likewise.
* tree-vect-stmts.c (free_stmt_vec_info_vec): Likewise.
* tree-vect-loop.c (new_loop_vec_info): Remove special-casing
of inner loop.
(vect_analyze_loop_1): Remove.
(vect_analyze_loop_form_1): Avoid building a loop_vec_info for
inner loop when vectorizing an outer loop by splitting out from ...
(vect_analyze_loop_form): ... here.

From-SVN: r228563

Fix PR c/65345 for arm

2015-10-07  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

PR c/65345
* config/arm/arm-builtins.c (arm_atomic_assign_expand_fenv):
Use create_tmp_var_raw instead of create_tmp_var.

From-SVN: r228562

Cache reals for 1/4, 1/6 and 1/9

We have a global 1/2 and a cached 1/3, but recalculate 1/4, 1/6 and 1/9
each time we need them.  That seems a bit arbitrary and makes the folding
code more noisy (especially once it's moved to match.pd).

This patch caches the other three constants too.  Bootstrapped &
regression-tested on x86_64-linux-gnu.

gcc/
* real.h (dconst_quarter, dconst_sixth, dconst_ninth): New macros.
(dconst_quarter_ptr, dconst_sixth_ptr, dconst_ninth_ptr): Declare.
* real.c (CACHED_FRACTION): New helper macro.
(dconst_third_ptr): Use it.
(dconst_quarter_ptr, dconst_sixth_ptr, dconst_ninth_ptr): New.
* builtins.c (fold_builtin_sqrt): Use dconst_quarter and
dconst_sixth.
(fold_builtin_cbrt): Use dconst_sixth and dconst_ninth.

From-SVN: r228561

cp-gimplify.c (genericize_if_stmt): Use protected_set_expr_location.

* cp-gimplify.c (genericize_if_stmt): Use protected_set_expr_location.
(genericize_cp_loop): Likewise.
* decl.c (cxx_maybe_build_cleanup): Likewise.
* parser.c (cp_parser_binary_expression): Likewise.
(cp_parser_omp_for_loop): Likewise.
(cp_parser_omp_construct): Likewise.
* semantics.c (finish_transaction_stmt): Likewise.
(build_transaction_expr): Likewise.

From-SVN: r228560

[PATCH][PR tree-optimization/67816] Fix jump threading when DOM removes conditionals in jump threading path

PR tree-optimization/67816
* tree-ssa-threadupdate.h (remove_jump_threads_including): Renamed
from remove_jump_threads_starting_at.  Accept an edge rather than
a basic block.
* tree-ssa-threadupdate.c (removed_edges): New hash table.
(remove_jump_threads_including): Note edges that get removed from
the CFG for later pruning of jump threading paths including them.
(thread_through_all_blocks): Remove paths which include edges that
have been removed.
* tree-ssa-dom.c (optimize_stmt): Call remove_jump_threads_including
on each outgoing edges when optimizing away a control statement.

* gcc.c-torture/compile/pr67816.c: New test.

From-SVN: r228559

reorg.c: use vec<rtx_insn *> instead of rtx_insn_list for the delay insn list

gcc/ChangeLog:

2015-10-06  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

* reorg.c (emit_delay_sequence): Store list of delay slot insns
in a vector instead of rtx_insn_list.
(add_to_delay_list): Likewise.
(delete_from_delay_slot): Likewise.
(optimize_skip): Likewise.
(redirect_with_delay_list_safe_p): Likewise.
(check_annul_list_true_false): Likewise.
(steal_delay_list_from_target): Likewise.
(steal_delay_list_from_fallthrough): Likewise.
(redundant_insn): Likewise.
(fill_simple_delay_slots): Likewise.
(fill_slots_from_thread): Likewise.
(fill_eager_delay_slots): Likewise.
(relax_delay_slots): Likewise.

From-SVN: r228558

re PR c++/67810 (Non-expression recognized as fold expression)

PR c++/67810
* parser.c (cp_parser_fold_expr_p): Remove.
(is_binary_op): New.
(cp_parser_fold_expression): Take LHS as parameter.
(cp_parser_primary_expression): Call it after parsing an expression.
(cp_parser_binary_expression, cp_parser_assignment_operator_opt)
(cp_parser_expression): Ignore an operator followed by '...'.
(is_binary_op): New.
* pt.c (tsubst_unary_left_fold, tsubst_binary_left_fold)
(tsubst_unary_right_fold, tsubst_binary_right_fold): Handle errors.

From-SVN: r228556

Daily bump.

From-SVN: r228555

[multiple changes]

2015-10-06  Louis Krupp <louis.krupp@zoho.com>
PR fortran/65766
* resolve.c (gfc_resolve_substring_charlen): For derived type,
use typespec of string component when resolving substring length.

2015-10-06  Louis Krupp     <louis.krupp@zoho.com>

PR fortran/65766
* gfortran.dg/substr_alloc_string_comp_1.f90: New.

From-SVN: r228551

compiler: Record each import as a distinct alias.

    This patch introduces the Package_alias class which is a
    finer representation of the different between a package and the
    aliases it is imported under.  Each alias keeps track of the location
    of its import statement and how many times that alias has been used.
    This allows the gofrontend to report when a specific import has not
    been used even if a symbol from the package has been used by another
    import.

    Fixes golang/go#12326.

    Reviewed-on: https://go-review.googlesource.com/14259

From-SVN: r228550

nios2.c (nios2_symbol_ref_in_small_data_p): For -mgpopt=local, also exclude unintialized common symbols.

2015-10-06  Sandra Loosemore  <sandra@codesourcery.com>

gcc/
* config/nios2/nios2.c (nios2_symbol_ref_in_small_data_p):
For -mgpopt=local, also exclude unintialized common symbols.
* doc/invoke.texi (Nios II Options): Document the change.

From-SVN: r228549

iterators.md (vwcore): Add missing cases for V4HF/V8HF modes.

gcc/ChangeLog:

2015-10-07  Kugan Vivekanandarajah  <kuganv@linaro.org>

* config/aarch64/iterators.md (vwcore): Add missing cases for
 V4HF/V8HF modes.

gcc/testsuite/ChangeLog:

2015-10-07  Kugan Vivekanandarajah  <kuganv@linaro.org>

* gcc.target/aarch64/get_lane_f16_1.c: New test.

From-SVN: r228547

move dr->alias_set to a helper structure

2015-10-06  Aditya Kumar  <aditya.k7@samsung.com>
                Sebastian Pop  <s.pop@samsung.com>

                * graphite-poly.c (new_scop): Initialize drs.
                * graphite-poly.h (struct dr_info): New.
                (struct scop): Add drs.
                * graphite-sese-to-poly.c (pdr_add_alias_set): Use dr_info.
                (pdr_add_memory_accesses): Same.
                (build_poly_dr): Same.
                (build_alias_set): Same.
                (build_scop_drs): Same.
                (build_pbb_drs): Remove.
                * tree-data-ref.c (create_data_ref): Do not initialize alias_set.
                * tree-data-ref.h (data_reference): Remove alias_set.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r228545

remove unused struct base_alias_pair

2015-10-06  Aditya Kumar  <aditya.k7@samsung.com>
                Sebastian Pop  <s.pop@samsung.com>

                * graphite-poly.c (free_data_refs_aux): Remove.
                (free_gimple_poly_bb): Do not call free_data_refs_aux.
                * graphite-poly.h (struct base_alias_pair): Remove.
                * graphite-sese-to-poly.c (pdr_add_alias_set): Remove all uses of
                base_alias_pair and dr->aux.
                (build_alias_set): Same.
                * tree-data-ref.c (create_data_ref): Initialize alias_set.
                * tree-data-ref.h (data_reference): Add alias_set.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r228544

remove dead code in computation of alias sets

2015-10-06  Aditya Kumar  <aditya.k7@samsung.com>
                Sebastian Pop  <s.pop@samsung.com>

                * graphite-poly.c (new_poly_dr): Remove dr_base_object_set.
                Do not set PDR_BASE_OBJECT_SET.
                * graphite-poly.h (poly_dr): Same.
                (PDR_BASE_OBJECT_SET): Remove.
                (new_poly_dr): Update decl.
                * graphite-sese-to-poly.c (build_poly_dr): Update call to
                new_poly_dr.
                (write_alias_graph_to_ascii_dimacs): Remove.
                (write_alias_graph_to_ascii_dot): Remove.
                (write_alias_graph_to_ascii_ecc): Remove.
                (dr_same_base_object_p): Remove.
                (build_alias_set_optimal_p): Rename build_alias_set.  Remove dead
                code.
                (build_base_obj_set_for_drs): Remove.
                (dump_alias_graphs): Remove.
                (build_scop_drs): Remove dead code.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r228543

c-parser.c (c_parser_statement_after_labels): Use protected_set_expr_location.

* c-parser.c (c_parser_statement_after_labels): Use
protected_set_expr_location.
(c_parser_omp_clause_num_gangs): Likewise.
(c_parser_omp_clause_num_threads): Likewise.
(c_parser_omp_clause_num_workers): Likewise.
(c_parser_omp_clause_vector_length): Likewise.
(c_parser_omp_clause_num_teams): Likewise.
(c_parser_omp_clause_thread_limit): Likewise.
* c-typeck.c (build_c_cast): Likewise.
(c_cast_expr): Likewise.

From-SVN: r228541

re PR c++/67863 (-Wtautological-compare warns when it shouldn't)

PR c++/67863
* call.c (build_conditional_expr_1): Build the COND_EXPR with
a location.

* c-c++-common/Wtautological-compare-4.c: New test.

From-SVN: r228540

Remove duplicate target line.

From-SVN: r228539

re PR target/67808 (LRA ICEs on simple double to long double conversion test case)

[gcc]
2015-10-05  Michael Meissner  <meissner@linux.vnet.ibm.com>
    Peter Bergner  <bergner@vnet.ibm.com>

PR target/67808
* config/rs6000/rs6000.md (extenddftf2): In the expander, only
allow registers, but provide insns for the combiner to create for
loads from memory. Separate VSX code from non-VSX code. For
non-VSX code, combine extenddftf2_fprs into extenddftf2 and rename
externaldftf2_internal to externaldftf2_fprs. Reorder constraints
so that registers come before memory operations. Drop support from
converting DFmode to TFmode, if the DFmode value is in a GPR
register.
(extenddftf2_fprs): Likewise.
(extenddftf2_internal): Likewise.
(extenddftf2_vsx): Likewise.
(extendsftf2): In the expander, only allow registers, but provide
insns for the combiner to create for stores and loads.

[gcc/testsuite]
2015-10-05  Michael Meissner  <meissner@linux.vnet.ibm.com>
    Peter Bergner <bergner@vnet.ibm.com>

PR target/67808
* gcc.target/powerpc/pr67808.c: New test.

Co-Authored-By: Peter Bergner <bergner@vnet.ibm.com>
From-SVN: r228538

Remove ATTRIBUTE_UNUSED from `decl' parameter of default_elf_asm_named_section

The decl parameter in default_elf_asm_named_section is actually used.
Applied as obvious after an arm-none-eabi build.

Ramana

2015-10-06 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>

* varasm.c (default_elf_asm_named_section): Remove ATTRIBUTE_UNUSED
from the decl parameter.

From-SVN: r228537

re PR middle-end/67861 (coreutils' wc.c:write_counts is miscompiled since commit 7e3a76de7c496449b187c2688d958631cf21a944)

PR 67861
* gimple-fold.c (gimple_fold_builtin): Add break after
BUILT_IN_PRINTF_CHK, BUILT_IN_VPRINTF_CHK folding.

From-SVN: r228536

Rename scop->ctx to isl_context

* graphite-optimize-isl.c (optimize_isl): Rename scop->ctx
to scop->isl_context.

From-SVN: r228535

arm.c (arm_emit_probe_stack_range): Adjust comment.

* config/arm/arm.c (arm_emit_probe_stack_range): Adjust comment.
(output_probe_stack_range): Rotate the loop and simplify.
(thumb1_expand_prologue): Tweak sorry message.
* config/arm/arm.md (probe_stack): Use bare string.

From-SVN: r228534

* config.gcc (lm32-elf): Add newlib-stdint.h to tm_file.

From-SVN: r228533

gcc * config/msp430/msp430.c (ATTR_NOINIT): New constant.

(ATTR_PERSIST): New constant.
(msp430_data_attr): New function - verifies an attribute that only
applies to variables.
(msp430_attributes): Add noinit and persistent attributes.
(noinit_section): New variable.
(presis_section): New variable.
(TARGET_ASM_INIT_SECTIONS): Define.
(msp430_init_sections): New function - initialises the noinit and
persist section variables.
(msp430_select_section): Add support for noinit and persist
attributes.
(msp430_section_type_flags): Likewise.
* doc/extend.texi:  Document the reent, critical, wakeup, noinit
and persistent attributes.

tests * gcc.target/msp430: New directory.
* gcc.target/msp430/msp430.exp: New file.  Runs MSP430 specific
tests.
* gcc.target/msp430/data-attributes.c: New file.  Checks the
noinit and persistent data attributes.

From-SVN: r228531

remove dead code used by the old cloog scheduler

2015-10-05  Aditya Kumar  <aditya.k7@samsung.com>
                Sebastian Pop  <s.pop@samsung.com>

                * graphite-dependences.c (scop_get_transformed_schedule): Remove.
                (no_violations): Remove.
                (subtract_commutative_associative_deps): Remove.
                (compute_deps): Do not call subtract_commutative_associative_deps.
                (transform_is_safe): Remove.
                (graphite_legal_transform): Remove.
                * graphite-poly.h (graphite_legal_transform): Remove.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r228530

Early exit to avoid redundant computations

Analyze only those bbs which are outside the region for uses which might be
defined inside the region. This is intended to improve the compile time. This
algorithm may be further improved by only looking at the successors of region as
these regions are sese. Added FIXMEs to make this improvement in future.

Passes regtest and bootstrap on x86_64.

gcc/ChangeLog:

2015-10-05  Aditya Kumar  <hiraditya@msn.com>

        * graphite-sese-to-poly.c (build_loop_iteration_domains): Only loops
        which are in this region are passed so gcc_assert and remove redundant
        computation.
        * sese.c (sese_build_liveouts): Pass only those bbs which are not in region.
        (sese_bad_liveouts_use): Only BBs which are not in region are passed so
        gcc_assert on that and remove unnecessary computation.
        (sese_build_liveouts_use): Same.

From-SVN: r228529

Move declarations, assign types, renaming.

1. Move declarations near the assignment/usage.
2. Assign type to members which were void*.
3. Rename scop->context to scop::param_context, and scop::ctx to
scop::isl_context

No functional changes intended. Passes regtest and bootstrap.

gcc/ChangeLog:

2015-10-05  Aditya Kumar  <aditya.k7@samsung.com>

        * graphite-dependences.c (scop_get_reads): Renamed scop->context to scop->param_context.
        (scop_get_must_writes): Same.
        (scop_get_may_writes): Same.
        (scop_get_original_schedule): Same.
        (scop_get_transformed_schedule): Same.
        (subtract_commutative_associative_deps): Same.
        * graphite-isl-ast-to-gimple.c (add_parameters_to_ivs_params): Same.
        (generate_isl_context): Same.
        (generate_isl_schedule): Same.
        (scop_to_isl_ast): Same.
        (graphite_regenerate_ast_isl): Same.
        * graphite-optimize-isl.c (scop_get_domains): Same.
        (optimize_isl): Renamed scop->context to scop->param_context.
        * graphite-poly.c (new_poly_bb): Change the type of argument to gimple_poly_bb_p.
        (new_scop): Renamed scop->context to scop->param_context.
        (free_scop): Same.
        (print_scop_context): Same.
        * graphite-poly.h (new_poly_dr): Change the type of argument from void* to data_reference_p.
        (struct poly_bb): Change the type of black_box to gimple_poly_bb_p.
        (new_poly_bb): Change the type of argument from void* to gimple_poly_bb_p.
        (pbb_set_black_box): Same.
        (struct scop): Rename context to param_context, ctx to isl_context.
        * graphite-scop-detection.c (scop_detection::build_scop_bbs_1): Move declarations closer to assignment.
        (find_params_in_bb): Same.
        (find_scop_parameters): Same.
        * graphite-sese-to-poly.c (unsigned ssa_name_version_typesize): Global to be used for statement IDs.
        (isl_id_for_pbb): Use ssa_name_version_typesize.
        (simple_copy_phi_p): Move declarations closer to assignment.
        (build_pbb_scattering_polyhedrons): Same.
        (build_scop_scattering): Same.
        (isl_id_for_ssa_name): Same.
        (extract_affine_name): Same.
        (extract_affine_int): Same.
        (extract_affine): Same.
        (set_scop_parameter_dim): Use renamed member.
        (build_loop_iteration_domains): Same.
        (add_param_constraints): Same.
        (build_scop_iteration_domain): Same.
        (pdr_add_data_dimensions): Same.
        (build_poly_dr): Same.
        (build_scop_drs): Move declarations closer to assignment.
        (analyze_drs_in_stmts): Same.
        (insert_out_of_ssa_copy): Same.
        (insert_out_of_ssa_copy_on_edge): Same.
        (propagate_expr_outside_region): Same.
        (rewrite_phi_out_of_ssa): Same.
        (rewrite_degenerate_phi): Same.
        (rewrite_reductions_out_of_ssa): Same.
        (rewrite_cross_bb_scalar_dependence): Same.
        (handle_scalar_deps_crossing_scop_limits): Same.
        (rewrite_cross_bb_scalar_deps): Same.
        * graphite.c (graphite_transform_loops): Use renamed member.

From-SVN: r228528

re PR c/65345 (ICE with _Generic selection on _Atomic int)

PR c/65345
* config/alpha/alpha.c (alpha_atomic_assign_expand_fenv): Use
create_tmp_var_raw instead of create_tmp_var.

From-SVN: r228527

Fix PR c/65345 for AArch64

2015-10-06  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

PR c/65345
* config/aarch64/aarch64-builtins.c (aarch64_atomic_assign_expand_fenv):
Use create_tmp_var_raw instead of create_tmp_var.

From-SVN: r228526

AVX-512. Avoid upper-bank registers when splitting vec_extract_lo instruction.

gcc/
PR target/67849
* config/i386/sse.md (define_split vec_select/V8FI): Restrict
split for upper-bank registers when target does not support
AVX512VL.
(define_insn "vec_extract_lo_<mode><mask_name>"): Restrict
split when target does not support AVX512VL.

From-SVN: r228525

re PR c/65345 (ICE with _Generic selection on _Atomic int)

        PR c/65345
        * config/rs6000/rs6000.c (rs6000_atomic_assign_expand_fenv):
        Adjust to use create_tmp_var_raw instead of create_tmp_var.

From-SVN: r228524

builtin_target.c: Fix AVX-512VBMI detection.

gcc/testsuite/
        * gcc.target/i386/builtin_target.c: Fix AVX-512VBMI detection.

From-SVN: r228523