2017-09-25  Piotr Trojanek  <trojanek@adacore.com>

	* adabkend.adb (Call_Back_End): Fix wording of "front-end" and
	"back-end" in comments.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

	* exp_ch6.adb (Expand_Call_Helper): The extra accessibility check in a
	call that appears in a classwide precondition and that mentions an
	access formal of the subprogram, must use the accessibility level of
	the actual in the call. This is one case in which a reference to a
	formal parameter appears outside of the body of the subprogram.

From-SVN: r253141

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_res.adb (Replace_Actual_Discriminants): Replace a discriminant
	for GNATprove.
	(Resolve_Entry): Clean up predicate

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_prag.adb (Analyze_Constituent): Raise Unrecoverable_Error rather
	than Program_Error because U_E is more in line with respect to the
	intended behavior.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch13.adb (Resolve_Aspect_Expressions): The expression for aspect
	Storage_Size does not freeze, and thus can include references to
	deferred constants.

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_spark.adb (Expand_SPARK_Potential_Renaming): Do not process a
	reference when it appears within a pragma of no significance to SPARK.
	(In_Insignificant_Pragma): New routine.
	* sem_prag.ads: Add new table Pragma_Significant_In_SPARK.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch12.adb (Analyze_Associations, case N_Formal_Package): If the
	actual is a renaming, indicate that it is the renamed package that must
	be frozen before the instantiation.

2017-09-25  Yannick Moy  <moy@adacore.com>

	* doc/gnat_ugn/gnat_and_program_execution.rst: Fix typo in description
	of dimensionality system in GNAT UG.
	* gnat_ugn.texi: Regenerate.

2017-09-25  Yannick Moy  <moy@adacore.com>

	* gnat1drv.adb: Call Check_Safe_Pointers from the frontend in
	GNATprove_Mode when switch -gnatdF used.

2017-09-25  Piotr Trojanek  <trojanek@adacore.com>

	* adabkend.adb (Call_Back_End): Reset Current_Error_Node when starting
	the backend.

From-SVN: r253140

exp_imgv.adb (Expand_Image_Attribute): Disable the optimized expansion of user-defined enumeration types when...

gcc/ada/

2017-09-25  Javier Miranda  <miranda@adacore.com>

	* exp_imgv.adb (Expand_Image_Attribute): Disable the optimized
	expansion of user-defined enumeration types when the generation of
	names for enumeration literals is suppressed.

2017-09-25  Gary Dismukes  <dismukes@adacore.com>

	* libgnarl/s-taprop__linux.adb: Minor reformatting.

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch13.adb (Resolve_Aspect_Expressions): Do not resolve identifiers
	that appear as selector names of parameter associations, as these are
	never resolved by visibility.

2017-09-25  Justin Squirek  <squirek@adacore.com>

	* sem_res.adb (Resolve_Entry): Generate reference for index entities.

gcc/testsuite/

2017-09-25  Justin Squirek  <squirek@adacore.com>

	* gnat.dg/entry_family.adb: New testcase

From-SVN: r253139

2017-09-25  Doug Rupp  <rupp@adacore.com>

	* libgnarl/s-taprop__linux.adb (Compute_Base_Monotonic_Clock): Refine.

2017-09-25  Javier Miranda  <miranda@adacore.com>

	* exp_imgv.adb (Is_User_Defined_Enumeration_Type): New subprogram.
	(Expand_User_Defined_Enumeration_Image): New subprogram.
	(Expand_Image_Attribute): Enable speed-optimized expansion of
	user-defined enumeration types when we are compiling with optimizations
	enabled.

2017-09-25  Piotr Trojanek  <trojanek@adacore.com>

	* sem_util.adb (Has_Null_Abstract_State): Remove, as an exactly same
	routine is already provided by Einfo.
	* einfo.adb (Has_Null_Abstract_State): Replace with the body from
	Sem_Util, which had better comments and avoided double calls to
	Abstract_State.

From-SVN: r253138

	PR target/80556
	* config/i386/darwin.h (REAL_LIB_SPEC): New; put libSystem ahead
	of libgcc_eh for m64.
	* config/i386/darwin64.h: Likewise.

/* WORKAROUND pr80556:
   For x86_64 Darwin10 and later, the unwinder is in libunwind (redirected
   from libSystem).  This doesn't use the keymgr (see keymgr.c) and therefore
   the calls that libgcc makes to obtain the KEYMGR_GCC3_DW2_OBJ_LIST are not
   updated to include new images, and might not even be valid for a single
   image.
   Therefore, for 64b exes at least, we must use the libunwind implementation,
   even when static-libgcc is specified.  We put libSystem first so that
   unwinder symbols are satisfied from there.

From-SVN: r253137

2017-09-25  Bob Duff  <duff@adacore.com>

	* exp_ch3.adb: Rename Comp_Type_Simple to be Comp_Simple_Init.

2017-09-25  Doug Rupp  <rupp@adacore.com>

	* libgnarl/s-taprop__linux.adb (Base_Monotonic_Clock): New variable.
	(Compute_Base_Monotonic_Clock): New function.
	(Timed_Sleep): Adjust to use Base_Monotonic_Clock.
	(Timed_Delay): Likewise.
	(Monotonic_Clock): Likewise.
	* s-oscons-tmplt.c (CLOCK_MONOTONIC): Use on Linux.

From-SVN: r253136

2017-09-25  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch12.adb (Save_References_In_Aggregate): Small correction to
	previous change.

2017-09-25  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch5.adb, sem_ch4.adb, sem_ch13.adb, sem_attr.adb, exp_ch3.adb:
	Minor reformatting.

From-SVN: r253135

2017-09-25  Richard Biener  <rguenther@suse.de>

	PR middle-end/82144
	* dwarf2out.c (gen_enumeration_type_die): Do not add alignment
	attribute for incomplete types nor twice for complete ones.

From-SVN: r253134

2017-09-25  Tom de Vries  <tom@codesourcery.com>

	* MAINTAINERS (CPU Port Maintainers): Add myself as nvptx maintainer.

From-SVN: r253133

This patch removes an unnecessary fold_convert to boolean_type_node at
the end of gfc_likely and gfc_unlikely.  It makes no difference to the
generated code, but makes tree dumps a little bit cleaner.

2017-09-25  Janne Blomqvist  <jb@gcc.gnu.org>
        * trans.c (gfc_unlikely): Remove unnecessary fold_convert.
        (gfc_likely): Likewise.

Regtested on x86_64-pc-linux-gnu.

From-SVN: r253132

From-SVN: r253131

Since the upper 32 bits of stack register are always zero for x32, we
can encode %esp as %rsp to avoid 0x67 prefix in address if there is no
index or base register.

gcc/

	PR target/82267
	* config/i386/i386.c (ix86_print_operand_address_as): Encode
	%esp as %rsp to avoid 0x67 prefix if there is no index or base
	register.

gcc/testsuite/

	PR target/82267
	* gcc.target/i386/pr82267.c: New test.

From-SVN: r253127

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
	PR fortran/66328

	* gfortran.dg/data_derived_1.f90: New test.

From-SVN: r253126

re PR fortran/54633 (ICEs and reject valid with MINLOC/MINVAL (MAXLOC/MAXVAL) due to lacking compile-time simplification)

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/54633
	* gfortran.dg/intrinsic_bounds_1.f90: New test.
	* gfortran.dg/intrinsic_param_1.f90: New test.

From-SVN: r253125

	PR libgfortran/79612
	* runtime/bounds.c: Use GFC_ASSERT.

From-SVN: r253124

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
	    Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/80118
	* expr.c (gfc_get_full_arrayspec_from_expr): If there is
	no symtree, set array spec to NULL.

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
	    Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/80118
	* gfortran.dg/zero_sized_7.f90: New test.


Co-Authored-By: Steven G. Kargl <kargl@gcc.gnu.org>

From-SVN: r253123

From-SVN: r253122

	PR bootstrap/82306
	* config/i386/i386.opt (mprefer-avx256): Use
	ix86_target_flags variable.
	* config/i386/i386.c (ix86_target_string): Move
	-mprefer-avx256 to flag2_opts.

From-SVN: r253118

2017-09-23  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/82143
	* lang.opt: Add the options -fdefault-real-10 and -fdefault-real-16.
	Rename flag_default_real to flag_default_real_8.
	* invoke.texi: Add documentation.
	* module.c (use_iso_fortran_env_module): flag_default_real is renamed.
	* trans-types.c (gfc_init_kinds): Implement the flags
	-fdefault-real-10 and -fdefault-real-16. Make -fdefault-double-8 work
	without -fdefault-real-8.

2017-09-23  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/82143
	* gfortran.dg/promotion_3.f90: New test case.
	* gfortran.dg/promotion_4.f90: New test case.

From-SVN: r253117

gcc/testsuite:
	* gcc.target/i386/pr82196-1.c: (b): Remove volatile asm.
	* gcc.target/i386/pr82196-2.c: (b): Likewise.

libgcc:
	* configure.ac: Add Check for HAVE_AS_AVX.
	* config.in: Regenerate.
	* configure: Likewise.
	* config/i386/i386-asm.h: Include auto-target.h from libgcc.
	(SSE_SAVE, SSE_RESTORE): Emit .byte sequence for !HAVE_AS_AVX.
	Correct out-of-date comments.

From-SVN: r253116

From-SVN: r253114

	PR bootstrap/81926
	* cp-objcp-common.c (cp_get_debug_type): Do only one lookup.

From-SVN: r253109

re PR middle-end/35691 (Missed (a == 0) && (b == 0) into (a|(typeof(a)(b)) == 0 when the types don't match)

	PR middle-end/35691
	* match.pd: Simplify x == -1 & y == -1 into (x & y) == -1
	and x != -1 | y != -1 into (x & y) != -1.

	* gcc.dg/pr35691-1.c: Use -fdump-tree-forwprop1-details
	instead of -fdump-tree-forwprop-details in dg-options.
	* gcc.dg/pr35691-2.c: Likewise.
	* gcc.dg/pr35691-3.c: New test.
	* gcc.dg/pr35691-4.c: New test.

From-SVN: r253107

	PR sanitizer/81929
	* tree.c (struct replace_placeholders_t): Add pset field.
	(replace_placeholders_r): Call cp_walk_tree with d->pset as
	last argument instead of NULL.  Formatting fix.
	(replace_placeholders): Add pset variable, add its address
	into data.  Pass &pset instead of NULL to cp_walk_tree.

	* g++.dg/ubsan/pr81929.C: New test.

From-SVN: r253106

    
    Reviewed-on: https://go-review.googlesource.com/64592

From-SVN: r253105

2017-09-22  Steve Ellcey  <sellcey@cavium.com>

	* config.gcc: Add new case statement to set
	default_gnu_indirect_function.  Remove it from x86_64-*-linux*,
	i[34567]86-*, powerpc*-*-linux*spe*, powerpc*-*-linux*, s390-*-linux*,
	s390x-*-linux* case statements.   Added aarch64 to the list of
	supported architectures.

From-SVN: r253104

This PR shows that we weren't filtering out irrelevant stmts in
vect_get_peeling_costs_all_drs (unlike related loops in which
we iterate over all datarefs).

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR tree-optimization/82289
	* tree-vect-data-refs.c (vect_get_peeling_costs_all_drs): Check
	STMT_VINFO_RELEVANT_P.

gcc/testsuite/
	PR tree-optimization/82289
	* gcc.dg/vect/pr82289.c: New test.

From-SVN: r253103

extract_range_from_binary_expr_1 had:

      if (range_int_cst_p (&vr0)
          && range_int_cst_p (&vr1)
          && TYPE_OVERFLOW_WRAPS (expr_type))
        ...
      ...
      extract_range_from_multiplicative_op_1 (vr, code, &vr0, &vr1);

but extract_range_from_multiplicative_op_1 also requires range_int_cst_p.
I think we should bail out if either range isn't a constant.

This might only be theoretical with current sources, but it's needed
once polynomial constants are added.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* tree-vrp.c (extract_range_from_multiplicative_op_1): Assert
	for VR_RANGE only; don't allow VR_ANTI_RANGE.
	(extract_range_from_binary_expr_1): Don't call
	extract_range_from_multiplicative_op_1 if !range_int_cst_p.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253102

The vectoriser aligned vectors to TYPE_ALIGN unconditionally, although
there was also a hard-coded assumption that this was equal to the type
size.  This was inconvenient for SVE for two reasons:

- When compiling for a specific power-of-2 SVE vector length, we might
  want to align to a full vector.  However, the TYPE_ALIGN is governed
  by the ABI alignment, which is 128 bits regardless of size.

- For vector-length-agnostic code it doesn't usually make sense to align,
  since the runtime vector length might not be a power of two.  Even for
  power of two sizes, there's no guarantee that aligning to the previous
  16 bytes will be an improveent.

This patch therefore adds a target hook to control the preferred
vectoriser (as opposed to ABI) alignment.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* target.def (preferred_vector_alignment): New hook.
	* doc/tm.texi.in (TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT): New
	hook.
	* doc/tm.texi: Regenerate.
	* targhooks.h (default_preferred_vector_alignment): Declare.
	* targhooks.c (default_preferred_vector_alignment): New function.
	* tree-vectorizer.h (dataref_aux): Add a target_alignment field.
	Expand commentary.
	(DR_TARGET_ALIGNMENT): New macro.
	(aligned_access_p): Update commentary.
	(vect_known_alignment_in_bytes): New function.
	* tree-vect-data-refs.c (vect_calculate_required_alignment): New
	function.
	(vect_compute_data_ref_alignment): Set DR_TARGET_ALIGNMENT.
	Calculate the misalignment based on the target alignment rather than
	the vector size.
	(vect_update_misalignment_for_peel): Use DR_TARGET_ALIGMENT
	rather than TYPE_ALIGN / BITS_PER_UNIT to update the misalignment.
	(vect_enhance_data_refs_alignment): Mask the byte misalignment with
	the target alignment, rather than masking the element misalignment
	with the number of elements in a vector.  Also use the target
	alignment when calculating the maximum number of peels.
	(vect_find_same_alignment_drs): Use vect_calculate_required_alignment
	instead of TYPE_ALIGN_UNIT.
	(vect_duplicate_ssa_name_ptr_info): Remove stmt_info parameter.
	Measure DR_MISALIGNMENT relative to DR_TARGET_ALIGNMENT.
	(vect_create_addr_base_for_vector_ref): Update call accordingly.
	(vect_create_data_ref_ptr): Likewise.
	(vect_setup_realignment): Realign by ANDing with
	-DR_TARGET_MISALIGNMENT.
	* tree-vect-loop-manip.c (vect_gen_prolog_loop_niters): Calculate
	the number of peels based on DR_TARGET_ALIGNMENT.
	* tree-vect-stmts.c (get_group_load_store_type): Compare the gap
	with the guaranteed alignment boundary when deciding whether
	overrun is OK.
	(vectorizable_mask_load_store): Interpret DR_MISALIGNMENT
	relative to DR_TARGET_ALIGNMENT instead of TYPE_ALIGN_UNIT.
	(ensure_base_align): Remove stmt_info parameter.  Get the
	target base alignment from DR_TARGET_ALIGNMENT.
	(vectorizable_store): Update call accordingly.   Interpret
	DR_MISALIGNMENT relative to DR_TARGET_ALIGNMENT instead of
	TYPE_ALIGN_UNIT.
	(vectorizable_load): Likewise.

gcc/testsuite/
	* gcc.dg/vect/vect-outer-3a.c: Adjust dump scan for new wording
	of alignment message.
	* gcc.dg/vect/vect-outer-3a-big-array.c: Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253101

gcc/testsuite/ChangeLog:

	PR c/81854
	* gcc.target/i386/pr80732.c: Correct a type error.

From-SVN: r253100

This patch adds a helper function for getting the number of bytes
accessed by an unvectorised data reference, which helps when general
modes have a variable size.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* tree-vectorizer.h (vect_get_scalar_dr_size): New function.
	* tree-vect-data-refs.c (vect_update_misalignment_for_peel): Use it.
	(vect_enhance_data_refs_alignment): Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253099

This patch adds a bit more error checking to parsecpu.awk to ensure
that statements are not missing arguments or have excess arguments
beyond those permitted.  It also slightly improves the handling of
errors so that we terminate properly if parsing fails and be as
helpful as we can while in the parsing phase.

2017-09-22  Richard Earnshaw  <richard.earnshaw@arm.com>

	* config/arm/parsecpu.awk (fatal): Note that we've encountered an
	error.  Only quit immediately if parsing is complete.
	(BEGIN): Initialize fatal_err and parse_done.
	(begin fpu, end fpu): Check number of arguments.
	(begin arch, end arch): Likewise.
	(begin cpu, end cpu): Likewise.
	(cname, tune for, tune flags, architecture, fpu, option): Likewise.
	(optalias): Likewise.

From-SVN: r253098

This patch autogenerates arm-isa.h from new entries in arm-cpus.in.
This has the primary advantage that it makes the description file more
self-contained, but it also solves the 'array dimensioning' problem
that Tamar recently encountered.  It adds two new constructs to
arm-cpus.in: features and fgroups.  Fgroups are simply a way of naming
a group of feature bits so that they can be referenced together.  We
follow the convention that feature bits are all lower case, while
fgroups are (predominantly) upper case. This is helpful as in some
contexts they share the same namespace. Most of the minor changes in
this patch are related to adopting this new naming convention.

2017-09-22  Richard Earnshaw  <richard.earnshaw@arm.com>

	* config.gcc (arm*-*-*): Don't add arm-isa.h to tm_p_file.
	* config/arm/arm-isa.h: Delete.  Move definitions to ...
	* arm-cpus.in: ... here.  Use new feature and fgroup values.
	* config/arm/arm.c (arm_option_override): Use lower case for feature
	bit names.
	* config/arm/arm.h (TARGET_HARD_FLOAT): Likewise.
	(TARGET_VFP3, TARGET_VFP5, TARGET_FMA): Likewise.
	* config/arm/parsecpu.awk (END): Add new command 'isa'.
	(isa_pfx): Delete.
	(print_isa_bits_for): New function.
	(gen_isa): New function.
	(gen_comm_data): Use print_isa_bits_for.
	(define feature): New keyword.
	(define fgroup): New keyword.
	* config/arm/t-arm (TM_H): Remove.
	(GTM_H): Add arm-isa.h.
	(arm-isa.h): Add rule to generate file.
	* common/config/arm/arm-common.c: (arm_canon_arch_option): Use lower
	case for feature bit names.

From-SVN: r253097

gcc/cp/ChangeLog:
	* call.c (get_fndecl_argument_location): New function.
	(convert_like_real): Use it  when complaining about argument type
	mismatches.
	* cp-tree.h (struct cp_parameter_declarator): Add "loc" field.
	* parser.c (make_parameter_declarator): Add "loc" param and use
	it to initialize the new field.
	(cp_parser_translation_unit): Add UNKNOWN_LOCATION for "loc" of
	the "no_parameters" parameter.
	(cp_parser_parameter_declaration_list): Set the location of the
	result of grokdeclarator to be the parameter's loc, assuming no
	errors.
	(cp_parser_parameter_declaration): Generate a location for the
	parameter and pass to make_parameter_declarator.

gcc/testsuite/ChangeLog:
	* g++.dg/diagnostic/param-type-mismatch.C: Update expected results
	to reflect highlighting of parameters; add test coverage for
	callback parameters.

From-SVN: r253096

	PR sanitizer/77631
	* configure.ac: Check for lstat and readlink.
	* elf.c (lstat, readlink): Provide dummy versions if real versions
	are not available.
	* configure, config.h.in: Rebuild.

From-SVN: r253095

2017-09-22  Richard Biener  <rguenther@suse.de>

	* graphite-isl-ast-to-gimple.c (graphite_verify): Inline into
	single caller.
	(graphite_regenerate_ast_isl): Do not reset SCEV.  Move debug
	print of no dependency loops ...
	* graphite.c (graphite_transform_loops): ... here.
	(canonicalize_loop_closed_ssa_form): Work from inner to outer
	loops.
	(same_close_phi_node, remove_duplicate_close_phi,
	make_close_phi_nodes_unique, defined_in_loop_p): Fold into ...
	(canonicalize_loop_closed_ssa): ... here and simplify.
	* graphite-optimize-isl.c: Include tree-vectorizer.h.
	(optimize_isl): Use dump_printf_loc to tell when we stopped
	optimizing because of an ISL timeout.

	* gcc.dg/graphite/scop-24.c: New testcase.

From-SVN: r253094

2017-09-22  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82291
	* tree-if-conv.c (predicate_mem_writes): Make sure to
	remove writes in blocks predicated with false.

	* gcc.dg/torture/pr82291.c: New testcase.

From-SVN: r253093

2017-09-22  Richard Biener  <rguenther@suse.de>

	* sese.c: Include cfganal.h.
	(if_region_set_false_region): Remove.
	(create_if_region_on_edge): Likewise.
	(move_sese_in_condition): Re-implement without destroying
	dominators.

From-SVN: r253092

2017-09-22  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/52832
	* gfortran.dg/associate_31.f90 : Remove failing test.

From-SVN: r253091

graphite-isl-ast-to-gimple.c (translate_pending_phi_nodes): Verify both BBs contain loop PHI nodes before dispatching to copy_loop_phi_args.

2017-09-21  Richard Biener  <rguenther@suse.de>

	* graphite-isl-ast-to-gimple.c (translate_pending_phi_nodes):
	Verify both BBs contain loop PHI nodes before dispatching to
	copy_loop_phi_args.
	(graphite_regenerate_ast_isl): Do not recompute dominators,
	do not verify three times.  Restructure for clarity.
	* graphite-scop-detection.c (same_close_phi_node,
	remove_duplicate_close_phi, make_close_phi_nodes_unique,
	defined_in_loop_p, canonicalize_loop_closed_ssa,
	canonicalize_loop_closed_ssa_form): Simplify, remove excess
	checking and SSA rewrite, move to ...
	* graphite.c: ... here.  Include ssa.h and tree-ssa-loop-manip.h.
	(graphite_initialize): Do not pass in ctx, do not reset the
	SCEV cache, compute only dominators.
	(graphite_transform_loops): Allocate ISL ctx after
	graphite_initialize.  Call canonicalize_loop_closed_ssa_form.
	Maintain post-dominators only around build_scops.
	* sese.c (if_region_set_false_region): Make static.  Free
	and recompute dominators.
	(move_sese_in_condition): Assert we don't get called with
	post-dominators computed.
	* sese.h (if_region_set_false_region): Remove.

From-SVN: r253090