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* config/rs6000/predicates.md (offsettable_mem_operand): Test
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
index 39cc552..306ddc4 100644 (file)
@@ -1,3 +1,374 @@
+2009-07-14  David Edelsohn  <edelsohn@gnu.org>
+
+       * config/rs6000/predicates.md (offsettable_mem_operand): Test
+       RTX_AUTOINC class.
+
+2009-07-14  Dodji Seketeli  <dodji@redhat.com>
+
+       PR debug/40705
+       PR c++/403057
+       * dwarf2.out.c (gen_type_die_with_usage): Added comment.
+
+2009-07-14  Richard Guenther  <rguenther@suse.de>
+
+       PR middle-end/40745
+       * cfgexpand.c (partition_stack_vars): Do not bother to update
+       alias information when not optimizing.
+
+2009-07-14  Richard Guenther  <rguenther@suse.de>
+       Andrey Belevantsev <abel@ispras.ru>
+
+       * tree-ssa-alias.h (refs_may_alias_p_1): Declare.
+       (pt_solution_set): Likewise.
+       * tree-ssa-alias.c (refs_may_alias_p_1): Export.
+       * tree-ssa-structalias.c (pt_solution_set): New function.
+       * final.c (rest_of_clean_state): Free SSA data structures.
+       * print-rtl.c (print_decl_name): Remove.
+       (print_mem_expr): Implement in terms of print_generic_expr.
+       * alias.c (ao_ref_from_mem): New function.
+       (rtx_refs_may_alias_p): Likewise.
+       (true_dependence): Query alias-export info.
+       (canon_true_dependence): Likewise.
+       (write_dependence_p): Likewise.
+       * tree-dfa.c (get_ref_base_and_extent): For void types leave
+       size unknown.
+       * emit-rtl.c (component_ref_for_mem_expr): Remove.
+       (mem_expr_equal_p): Use operand_equal_p.
+       (set_mem_attributes_minus_bitpos): Do not use
+       component_ref_for_mem_expr.
+       * cfgexpand.c (add_partitioned_vars_to_ptset): New function.
+       (update_alias_info_with_stack_vars): Likewise.
+       (partition_stack_vars): Call update_alias_info_with_stack_vars.
+       * tree-ssa.c (delete_tree_ssa): Do not release SSA names
+       explicitly nor clear stmt operands.
+       Free the decl-to-pointer map.
+       * tree-optimize.c (execute_free_datastructures): Do not free
+       SSA data structures here.
+       * tree-flow.h (struct gimple_df): Add decls_to_pointers member.
+       * Makefile.in (emit-rtl.o): Add pointer-set.h dependency.
+       (alias.o): Add tree-ssa-alias.h, pointer-set.h and $(TREE_FLOW_H)
+       dependencies.
+       (print-rtl.o): Add $(DIAGNOSTIC_H) dependency.
+
+2009-07-13  DJ Delorie  <dj@redhat.com>
+
+       * config/mep/mep.h (CC1_SPEC): Tweak parameters to trigger
+       unrolling at the right iteration count.
+
+       * config/mep/mep.c (mep_expand_prologue): Fix frame pointer
+       calculations.
+
+2009-07-13  Ghassan Shobaki  <ghassan.shobaki@amd.com>
+       
+       * haifa-sched.c 
+       (rank_for_schedule): Introduced flags to enable/disable 
+       individual scheduling heuristics.
+       * common.opt: Introduced flags to enable/disable
+        individual heuristics in the scheduler.        
+       * doc/invoke.texi: Introduced flags to enable/disable
+        individual heuristics in the scheduler.
+       
+2009-07-13  Kai Tietz  <kai.tietz@onevision.com>
+
+       * config/i386/t-gthr-win32 (LIB2FUNCS_EXTRA): Remove file
+       config/i386/mingw-tls.c.
+       * config/i386/mingw-tls.c: Removed.
+
+2009-07-13  Ira Rosen  <irar@il.ibm.com>
+
+       * tree-vect-loop.c (get_initial_def_for_reduction): Ensure that the 
+       checks access only relevant statements.
+       (vectorizable_reduction): Likewise.
+
+2009-07-12  Kai Tietz  <kai.tietz@onevision.com>
+
+       * config/i386/cygming.h (TARGET_OS_CPP_BUILTINS): Define _X86_
+       just for 32-bit case.
+
+2009-07-12  Jan Hubicka  <jh@suse.cz>
+
+       PR tree-optimization/40585
+       * except.c (expand_resx_expr): When there already is resume
+       instruction, produce linked list.
+       (build_post_landing_pads): Assert that resume is empty.
+       (connect_post_landing_pads): Handle resume lists.
+       (dump_eh_tree): Dump resume list.
+
+2009-07-12  Ira Rosen  <irar@il.ibm.com>
+
+       * tree-parloops.c (loop_parallel_p): Call vect_is_simple_reduction
+       with additional argument.
+       * tree-vectorizer.h (enum vect_def_type): Add
+       vect_double_reduction_def.
+       (vect_is_simple_reduction): Add argument.
+       * tree-vect-loop.c (vect_determine_vectorization_factor): Fix
+       indentation.
+       (vect_analyze_scalar_cycles_1): Detect double reduction. Call
+       vect_is_simple_reduction with additional argument.
+       (vect_analyze_loop_operations): Handle exit phi nodes in case of
+       double reduction.
+       (reduction_code_for_scalar_code): Handle additional codes by
+       returning ERROR_MARK for them. Fix comment and indentation.
+       (vect_is_simple_reduction): Fix comment, add argument to specify
+       double reduction. Detect double reduction.
+       (get_initial_def_for_induction): Fix indentation.
+       (get_initial_def_for_reduction): Fix comment and indentation.
+       Handle double reduction. Create initial definitions that do not
+       require adjustment if ADJUSTMENT_DEF is NULL. Handle additional cases.
+       (vect_create_epilog_for_reduction): Fix comment, add argument to
+       handle double reduction. Use PLUS_EXPR in case of MINUS_EXPR in
+       epilogue result extraction. Create double reduction phi node and
+       replace relevant uses.
+       (vectorizable_reduction): Call vect_is_simple_reduction with
+       additional argument. Fix indentation. Update epilogue code treatment
+       according to the changes in reduction_code_for_scalar_code. Check
+       for double reduction. Call vect_create_epilog_for_reduction with
+       additional argument.
+       * tree-vect-stmts.c (process_use): Handle double reduction, update
+       documentation.
+       (vect_mark_stmts_to_be_vectorized): Handle double reduction.
+       (vect_get_vec_def_for_operand): Likewise.
+
+2009-07-12  Danny Smith  <dansmister@gmail.com>
+
+       * config/i386/winnt.c (i386_pe_determine_dllexport_p): Don't
+       dllexport if !TREE_PUBLIC.
+       (i386_pe_maybe_record_exported_symbol): Assert TREE_PUBLIC.
+
+2009-07-11  Anatoly Sokolov  <aesok@post.ru>
+
+       * config/avr/avr.h (TARGET_CPU_CPP_BUILTINS): Redefine.
+       (avr_extra_arch_macro) Remove declatation.
+       * config/avr/avr.c (avr_cpu_cpp_builtins): New function.
+       (avr_extra_arch_macro) Declare as static.
+       * config/avr/avr-protos.h (avr_cpu_cpp_builtins): Dclare.
+
+2009-07-11  Jan Hubicka  <jh@suse.cz>
+
+       PR middle-end/48388
+       * except.c (can_be_reached_by_runtime): Test for NULL aka bitmap.
+
+2009-07-11  Jakub Jelinek  <jakub@redhat.com>
+
+       PR debug/40713
+       * dwarf2out.c (dw_fde_struct): Add in_std_section and
+       cold_in_std_section bits.
+       (dwarf2out_begin_prologue): Initialize them.
+       (dwarf2out_finish): Don't emit FDE range into .debug_ranges
+       if already covered by text_section or cold_text_section range.
+
+       PR rtl-optimization/40667
+       * defaults.h (MINIMUM_ALIGNMENT): Define if not defined.
+       * doc/tm.texi (MINIMUM_ALIGNMENT): Document it.
+       * config/i386/i386.h (MINIMUM_ALIGNMENT): Define.
+       * config/i386/i386.c (ix86_minimum_alignment): New function.
+       * config/i386/i386-protos.h (ix86_minimum_alignment): New prototype.
+       * cfgexpand.c (expand_one_var): Use MINIMIM_ALIGNMENT.
+       * emit-rtl.c (gen_reg_rtx): Likewise.
+       * function.c (assign_parms): Likewise.  If nominal_type needs
+       bigger alignment than FUNCTION_ARG_BOUNDARY, use its alignment
+       rather than passed_type's alignment.
+
+       PR target/40668
+       * function.c (assign_parm_setup_stack): Adjust
+       MEM_OFFSET (data->stack_parm) if promoted_mode is different
+       from nominal_mode on big endian.
+
+2009-07-11  Paolo Bonzini  <bonzini@gnu.org>
+
+       * expmed.c (emit_store_flag_1): Fix choice of zero vs. sign extension.
+
+2009-07-10  DJ Delorie  <dj@redhat.com>
+
+       * config/mep/mep.c (mep_can_inline_p): Correct logic, and simplify.
+
+2009-07-10  Mark Mitchell  <mark@codesourcery.com>
+
+       * config/arm/thumb2.md (thumb2_cbz): Correct computation of length
+       attribute.
+       (thumb2_cbnz): Likewise.
+
+2009-07-10  David Daney  <ddaney@caviumnetworks.com>
+
+       PR target/39079
+       * config.gcc (supported_defaults): Add synci.
+       (with_synci): Add validation.
+       (all_defaults): Add synci.
+       * config/mips/mips.md (clear_cache): Use TARGET_SYNCI instead of
+       ISA_HAS_SYNCI.
+       (synci): Same.
+       * config/mips/mips.opt (msynci): New option.
+       * config/mips/mips.c (mips_override_options): Warn on use of
+       -msynci for targets that do now support it.
+       * gcc/config/mips/mips.h (OPTION_DEFAULT_SPECS): Add a default for
+       msynci.
+       * gcc/doc/invoke.texi (-msynci): Document the new option.
+       * doc/install.texi (--with-synci): Document the new option.
+
+2009-07-10  Richard Guenther  <rguenther@suse.de>
+
+       PR tree-optimization/40496
+       * tree-ssa-loop-manip.c (tree_transform_and_unroll_loop): Create
+       the PHI result with a compatible type.
+
+2009-07-10  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+       PR 25509
+       PR 40614
+       * c.opt (Wunused-result): New.
+       * doc/invoke.texi: Document it.
+       * c-common.c (c_warn_unused_result): Use it.
+
+2009-07-09  DJ Delorie  <dj@redhat.com>
+
+       * targhooks.c (default_target_can_inline_p): Rename from
+       default_target_option_can_inline_p.
+       * targhooks.h (default_target_can_inline_p): Likewise.
+       * target-def.h (TARGET_CAN_INLINE_P): Rename from
+       TARGET_OPTION_CAN_INLINE_P.
+       * config/i386/i386.c (TARGET_CAN_INLINE_P): Likewise.
+       * config/mep/mep.c (TARGET_CAN_INLINE_P): Likewise.
+       (mep_target_can_inline_p): Rename from
+       mep_target_option_can_inline_p.
+
+       PR target/40626
+       * config/mep/mep.h (FUNCTION_ARG_REGNO_P): Add coprocessor
+       registers used to pass vectors.
+
+       * config/mep/mep.c (mep_option_can_inline_p): Remove error call.
+
+2009-07-09  Tom Tromey  <tromey@redhat.com>
+
+       * unwind-dw2-fde-darwin.c: Include dwarf2.h.
+       * config/mmix/mmix.c: Include dwarf2.h.
+       * config/rs6000/darwin-fallback.c: Include dwarf2.h.
+       * config/xtensa/unwind-dw2-xtensa.c: Include dwarf2.h.
+       * config/sh/sh.c: Include dwarf2.h.
+       * config/i386/i386.c: Include dwarf2.h.
+       * Makefile.in (DWARF2_H): Remove 'elf'.
+       * except.c: Include dwarf2.h.
+       * unwind-dw2.c: Include dwarf2.h.
+       * dwarf2out.c: Include dwarf2.h.
+       * unwind-dw2-fde-glibc.c: Include dwarf2.h.
+       * unwind-dw2-fde.c: Include dwarf2.h.
+       * dwarf2asm.c: Include dwarf2.h.
+
+2009-07-09  Maxim Kuvyrkov  <maxim@codesourcery.com>
+
+       * haifa-sched.c (insn_finishes_cycle_p): New static function.
+       (max_issue): Use it.
+       * sched-int.h (struct sched_info: insn_finishes_block_p): New
+       scheduler hook.
+       * sched-rgn.c (rgn_insn_finishes_block_p): Implement it.
+       (region_sched_info): Update.
+       * sched-ebb.c (ebb_sched_info): Update.
+       * modulo-sched.c (sms_sched_info): Update.
+       * sel-sched-ir.c (sched_sel_haifa_sched_info): Update.
+
+2009-07-09  Maxim Kuvyrkov  <maxim@codesourcery.com>
+
+       * varasm.c (build_constant_desc): Don't share RTL in pool entries.
+
+2009-07-09  Basile Starynkevitch  <basile@starynkevitch.net>
+
+       * plugin.c (try_init_one_plugin): passes RTLD_GLOBAL to dlopen. 
+
+2009-07-09  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/40692
+       * fold-const.c (fold_cond_expr_with_comparison): Don't replace
+       arg1 with arg01 if arg1 is already INTEGER_CST.
+
+2009-07-08  Adam Nemet  <anemet@caviumnetworks.com>
+
+       * simplify-rtx.c (simplify_binary_operation_1) <AND>:
+       Transform (and (truncate)) into (truncate (and)).
+
+2009-07-08  Adam Nemet  <anemet@caviumnetworks.com>
+
+       * combine.c (make_extraction): Check TRULY_NOOP_TRUNCATION before
+       creating LHS paradoxical subregs.  Fix surrounding returns to
+       use NULL_RTX rather than 0.
+
+2009-07-08  DJ Delorie  <dj@redhat.com>
+
+       * config/mep/mep.c: (mep_option_can_inline_p): New.
+       (TARGET_OPTION_CAN_INLINE_P): Define.
+
+2009-07-08  Mark Wielaard  <mjw@redhat.com>
+
+       PR debug/40659
+       * dwarf2out.c (add_data_member_location_attribute): When we have
+       only a constant offset don't emit a new location description using
+       DW_OP_plus_uconst, but just add the constant with add_AT_int, when
+       dwarf_version > 2.
+
+2009-07-08  Richard Henderson  <rth@redhat.com>
+
+       PR target/38900
+       * config/i386/i386.h (CONDITIONAL_REGISTER_USAGE): Move to i386.c.
+       (enum reg_class): Add CLOBBERED_REGS.
+       (REG_CLASS_NAMES, REG_CLASS_CONTENTS): Likewise.
+       * config/i386/i386.c (ix86_conditional_register_usage): Moved
+       from CONDITIONAL_REGISTER_USAGE; build CLOBBERED_REGS for 64-bit.
+       (ix86_function_ok_for_sibcall): Tidy.  Disallow MS->SYSV sibcalls.
+       (ix86_expand_call): Use sibcall_insn_operand when needed.  Don't
+       force 64-bit sibcalls into R11.
+       * config/i386/constraints.md (U): New constraint.
+       * config/i386/i386.md (sibcall_1, sibcall_value_1): Use it.
+       (sibcall_1_rex64, sibcall_value_1_rex64): Likewise.
+       (sibcall_1_rex64_v, sibcall_value_1_rex64_v): Remove.
+
+2009-07-08  Shujing Zhao  <pearly.zhao@oracle.com>
+
+       * basic-block.h (dump_regset, debug_regset): Remove duplicate
+       prototypes.
+       * c-objc-common.h (c_initialize_diagnostics): Ditto.
+       * ebitmap.h (dump_ebitmap): Ditto.
+       * optabs.h (optab_libfunc): Ditto.
+       * tree.h (tree_expr_nonzero_warnv_p): Ditto.
+       * tree-flow.h (vect_can_force_dr_alignment_p,
+       get_vectype_for_scalar_type): Ditto.
+       (vectorize_loops): Move prototype to ...
+       * tree-vectorizer.h: ... here. Also, adjust comment.
+       (vect_set_verbosity_level): Remove duplicate prototype.
+       * tree-ssa-loop.c: Include tree-vectorizer.h.
+       * Makefile.in (tree-ssa-loop.o): Depend on tree-vectorizer.h.
+
+2009-07-08  Nick Clifton  <nickc@redhat.com>
+
+       * config/i386/unix.h (ASM_COMMENT_START): Add a space after the
+       forward slash.
+
+2009-07-08  DJ Delorie  <dj@redhat.com>
+
+       * config/mep/mep-ivc2.cpu (cpmovtocsar0_C3, cpmovtocsar1_C3,
+       cpmovtocc_C3, cpmovtocsar0_P0S_P1, cpmovtocsar1_P0S_P1,
+       cpmovtocc_P0S_P1): Mark volatile.  Note which registers are
+       written to.
+       * config/mep/intrinsics.md: Regenerated.
+       * config/mep/mep.c (mep_interrupt_saved_reg): Save IVC2 control
+       registers when asm() or calls are detected.
+
+2009-07-08  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+       PR c++/31246
+       * gimplify.c (gimplify_expr): Propagate no_warning flag when
+       gimplifying.
+       * gimple (gimple_build_call_from_tree): Likewise.
+       * tree-cfg.c (remove_useless_stmts_warn_notreached): Check
+       no_warning flag before warning.
+
+2009-07-07  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+       * tree.c (set_expr_locus): Remove.
+       * tree.h (EXPR_LOCUS,SET_EXPR_LOCUS,set_expr_locus): Remove.
+       * c-typeck.c (c_finish_stmt_expr):  Replace EXPR_LOCUS by
+       EXPR_LOCATION.
+       * gimplify.c (internal_get_tmp_var): Likewise.
+       (gimplify_call_expr): Likewise.
+       (gimplify_one_sizepos): Likewise.
+
 2009-07-07  Eric Botcazou  <ebotcazou@adacore.com>
 
        PR debug/40666
 
 2009-07-07  Duncan Sands  <baldrick@free.fr>
 
-        * final.c (pass_clean_state): Give the pass a name.
-        * passes.c (pass_rest_of_compilation): Likewise.
-        * tree-optimize.c (pass_all_optimizations): Likewise.
+       * final.c (pass_clean_state): Give the pass a name.
+       * passes.c (pass_rest_of_compilation): Likewise.
+       * tree-optimize.c (pass_all_optimizations): Likewise.
 
 2009-07-07  H.J. Lu  <hongjiu.lu@intel.com>
 
 
 2009-07-07  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
-       * cgraphunit.c: Replace %J by an explicit location. Update all
-       calls.
+       * cgraphunit.c: Replace %J by an explicit location.  Update all calls.
        * c-decl.c: Likewise.
        * function.c: Likewise.
        * varasm.c: Likewise.
        * config/mep/intrinsics.md: Regenerate.
        * config/mep/intrinsics.h: Regenerate.
        * config/mep/mep-intrin.h: Regenerate.
-       
+
 2009-07-07  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
        * c-lex.c: Replace %H by an explicit location. Update all calls.
 
 2009-07-06  Diego Novillo  <dnovillo@google.com>
 
-       * tree-pretty-print.c (dump_generic_node): Protect
-       against NULL op0.
+       * tree-pretty-print.c (dump_generic_node): Protect against NULL op0.
        (debug_tree_chain): Handle cycles.
 
 2009-07-06  Nick Clifton  <nickc@redhat.com>
        (TARGET_CPU_CPP_BUILTINS): Define
        __FMOVD_ENABLED__ if TARGET_FMOVD is true.
        * config/sh/sh.md (movdf_i4): For alternative 0 use either one or
-       two fmov instructions depending upon whether TARGET_FMOVD is
-       enabled.
+       two fmov instructions depending upon whether TARGET_FMOVD is enabled.
        (split for DF load from memory into register): Also handle
        MEMs which consist of REG+DISP addressing.
        (split for DF store from register to memory): Likewise.
 2009-07-03  Vladimir Makarov  <vmakarov@redhat.com>
 
        PR target/40587
-       * ira.c (build_insn_chain): Use DF_LR_OUT instead of
-       df_get_live_out.
-       
+       * ira.c (build_insn_chain): Use DF_LR_OUT instead of df_get_live_out.
+
 2009-07-03  Richard Guenther  <rguenther@suse.de>
 
        PR tree-optimization/40640
 2009-07-03  Richard Guenther  <rguenther@suse.de>
 
        PR middle-end/34163
-       * tree-chrec.c (chrec_convert_1): Fold (T2)(t +- x) to
-       (T2)t +- (T2)x if t +- x is known to not overflow and
-       the conversion widens the operation.
+       * tree-chrec.c (chrec_convert_1): Fold (T2)(t +- x) to (T2)t +- (T2)x
+       if t +- x is known to not overflow and the conversion widens the
+       operation.
        * Makefile.in (tree-chrec.o): Add $(FLAGS_H) dependency.
 
 2009-07-03  Jan Hubicka  <jh@suse.cz>
        * config/mep/intrinsics.md: Regenerate.
        * config/mep/intrinsics.h: Regenerate.
        * config/mep/mep-intrin.h: Regenerate.
-       
+
 2009-07-01  Anthony Green  <green@moxielogic.com>
 
        * config/moxie/moxie.c (moxie_expand_prologue): Use dec
        instruction when possible.
        (moxie_expand_prologue): Ditto.  Also, save an instruction and
-       some complexity by popping off of $r12 instead of $sp.  
+       some complexity by popping off of $r12 instead of $sp.
        * config/moxie/moxie.md (movsi_pop): Don't assume $sp.  Take two
        operands.
-       
+
 2009-07-01  Richard Henderson  <rth@redhat.com>
 
        PR bootstrap/40347
        (vect_finalize_reduction): Handle subtraction, fix comments.
        (vectorizable_reduction): Handle nested cycles. In case of nested
        cycle keep track of the reduction variable position. Call 
-       vect_is_simple_reduction with additional parameter. Use original 
+       vect_is_simple_reduction with additional parameter. Use original
        statement code in reduction epilogue for nested cycle. Call
        vect_create_epilog_for_reduction with additional parameter.
        * tree-vect-patterns.c (vect_recog_dot_prod_pattern): Assert
 2009-06-01  Ira Rosen  <irar@il.ibm.com>
 
        PR tree-optimization/39129
-       * tree-vect-loop-manip.c (conservative_cost_threshold): Change the 
+       * tree-vect-loop-manip.c (conservative_cost_threshold): Change the
        printed message.
-       (vect_do_peeling_for_loop_bound): Use 
+       (vect_do_peeling_for_loop_bound): Use
        LOOP_REQUIRES_VERSIONING_FOR_ALIGNMENT and
        LOOP_REQUIRES_VERSIONING_FOR_ALIAS macros.
        (vect_loop_versioning): Likewise.
        (vect_create_cond_for_alias_checks): Fix indentation.
-       * tree-vectorizer.h (struct _loop_vec_info): Fix indentation of the 
+       * tree-vectorizer.h (struct _loop_vec_info): Fix indentation of the
        macros.
        (LOOP_REQUIRES_VERSIONING_FOR_ALIGNMENT): Define.
        (LOOP_REQUIRES_VERSIONING_FOR_ALIAS): Likewise.
-       * tree-vect-loop.c (vect_analyze_loop_form): Change "too many BBs" to 
+       * tree-vect-loop.c (vect_analyze_loop_form): Change "too many BBs" to
        "control flow in loop".
-       (vect_estimate_min_profitable_iters): Use 
+       (vect_estimate_min_profitable_iters): Use
        LOOP_REQUIRES_VERSIONING_FOR_ALIGNMENT and
        LOOP_REQUIRES_VERSIONING_FOR_ALIAS macros.
        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Likewise.
        (vect_create_data_ref_ptr): Don't mention array dimension in printing.
-       * tree-vect-stmts.c (vectorizable_store): Replace the check that the 
-       statement belongs to a group of strided accesses with the exact code 
+       * tree-vect-stmts.c (vectorizable_store): Replace the check that the
+       statement belongs to a group of strided accesses with the exact code
        check.
        (vectorizable_load): Likewise.
        * tree-vect-slp.c (vect_analyze_slp_instance): Spell out "basic block".