* tree-data-ref.c (compute_all_dependences): Use a pointer to

[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog

2006-04-02  Sebastian Pop  <pop@cri.ensmp.fr>

        * tree-data-ref.c (compute_all_dependences): Use a pointer to
        the dependence_relations vector.
        (compute_data_dependences_for_loop): Adjust call to
        compute_all_dependences.

2006-04-01  Roger Sayle  <roger@eyesopen.com>
            Richard Henderson  <rth@redhat.com>

        * gimplify.c (gimplify_scan_omp_clauses) <OMP_CLAUSE_IF>: Call
        gimple_boolify on the condition before calling gimplify_expr.

2006-03-31  Bob Wilson  <bob.wilson@acm.org>

        * config/xtensa/lib1funcs.asm: Rename abi_entry/abi_return macros
        to leaf_entry/leaf_return.  Change leaf_entry to add 16 bytes to
        the frame size.  Update to use the new macros.
        * config/xtensa/ieee754-sf.S: Use new leaf_entry/leaf_return macros.
        * config/xtensa/ieee754-df.S: Likewise.

2006-03-31  Richard Henderson  <rth@redhat.com>

        * tree-cfg.c (make_ctrl_stmt_edges, make_exit_edges): Merge into...
        (make_edges): ... here.  Control fallthru creation with a local
        variable.  Do not play with fake edges.
        (make_omp_sections_edges): Don't set EDGE_ABNORMAL.
        (make_goto_expr_edges): Don't play with fake edges.  Make for_call
        a boolean.

2006-04-01  Joseph S. Myers  <joseph@codesourcery.com>

        * dwarf2.h (DW64_CIE_ID): Define.
        * dwarf2out.c (DWARF_CIE_ID): Define.
        (output_call_frame_info): Output 0xffffffff before standard 8-byte
        length header.  Use DWARF_CIE_ID.
        (value_format): Use DW_FORM_data4 or DW_FORM_data8 for
        dw_val_class_loc_list depending on DWARF_OFFSET_SIZE.

2006-03-31  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/linux-atomic.asm: New file.
        * config/sh/t-linux (LIB2FUNCS_EXTRA): Add linux-atomic.asm.

2006-03-31  DJ Delorie  <dj@redhat.com>

        * config/m32c/cond.md: Set condition flags properly throughout.
        * config/m32c/minmax.md: Likewise.
        * config/m32c/prologue.md: Likewise.
        * config/m32c/bitops.md: Likewise.
        * config/m32c/muldiv.md: Likewise.
        * config/m32c/mov.md: Likewise.
        * config/m32c/addsub.md: Likewise.
        * config/m32c/m32c.md: Likewise.
        * config/m32c/jump.md: Likewise.
        * config/m32c/shift.md: Likewise.

        * config/m32c/cond.md (cmp<mode>): Call m32c_output_compare to
        conditionally output the pattern for this.
        * config/m32c/m32c.c (flags_needed_for_conditional): New.
        (m32c_compare_redundant): New.
        (m32c_output_compare): New.
        * config/m32c/m32c-protos.h (m32c_output_compare): New.

        * config/m32c/m32c.c (m32c_prepare_shift): Fix logic to clobber
        dest, not src.  Allow other 4-byte modes.

2006-03-30  Denis Chertykov  <denisc@overta.ru>

        * doc/md.texi: Refer to avr/constraints.md instead of
        avr/avr.h.

2006-03-30  Roger Sayle  <roger@eyesopen.com>

        * expr.c (emit_group_store): Make BYTEPOS a HOST_WIDE_INT to
        signed vs. unsigned comparison failures on some hosts.

2006-03-31  Alan Modra  <amodra@bigpond.net.au>

        PR target/26459
        * config/rs6000/rs6000.h (CANNOT_CHANGE_MODE_CLASS): Limit 2003-12-08
        change to FLOAT_REGS.

        * config/rs6000/rs6000.c (rs6000_explicit_options): Add ieee.
        (rs6000_override_options): Use it.
        (rs6000_handle_option): Set it.  Set rs6000_explicit_options.abi
        only for -mabi=spe/no-spe and -mabi=altivec.

2006-03-30  Geoffrey Keating  <geoffk@apple.com>

        * config/darwin.h (LINK_COMMAND_SPEC): Don't try to protect %S with
        !Zdynamiclib.

2006-03-30  Carlos O'Donell  <carlos@codesourcery.com>

        * Makefile.in: Rename docdir to gcc_docdir.

2006-03-30  Roger Sayle  <roger@eyesopen.com>

        PR target/17959
        * expr.c (emit_group_store):  Optimize group stores into a pseudo
        register by using a paradoxical subreg to initialize the destination
        if the first or last member of the group specifies a "low part".

2006-03-30  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        PR target/26734
        * rtl.def (DEPS_LIST): Change type of the second operand to 'int'.
        * target.h (struct gcc_target.speculate_insn): Change type of the
        second parameter to 'int'.
        * lists.c (alloc_DEPS_LIST): Change signature.  Update reference to
        the second operand of the DEPS_LIST.
        (copy_DEPS_LIST_list): Update reference to the second operand of the
        DEPS_LIST.
        * rtl.h (alloc_DEPS_LIST): Update signature.
        * sched-int.h (ds_t): Change typedef to 'int'.
        (DEP_STATUS, BITS_PER_DEP_STATUS): Update.

2006-03-30  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        * haifa-sched.c (try_ready): Change condition to restore
        non-speculative pattern of the instruction.
        (process_insn_depend_be_in_spec): Code to keep probability of the
        speculative dependence non-decreasing.

2006-03-30  Jie Zhang  <jie.zhang@analog.com>

        * config/bfin/bfin.c (single_move_for_strmov): Renamed to...
        (single_move_for_movmem): ... this. Also change all uses.
        (bfin_expand_strmov): Renamed to...
        (bfin_expand_movmem): ... this. Also change all uses.
        * config/bfin/bfin.md (movstrsi): Renamed to...
        (movstrsi): ...this.

2006-03-30  Paolo Bonzini  <bonzini@gnu.org>

        PR tree-optimization/26830

        * tree-ssa-copy.c (copy_prop_visit_assignment): Do not check loop depth.
        (copy_prop_visit_stmt): Remove write-only variable ann.
        (init_copy_prop): Check variable loop depth here.  Do not simulate
        memory-tag and virtual operand PHIs except for store copy prop.

2006-03-30  Richard Guenther  <rguenther@suse.de>

        * config/i386/i386.c: Remove builtins for SSE2 ABI intrinsic
        variants with double arguments.

2006-03-29  David Edelsohn  <edelsohn@gnu.org>

        * genpreds.c (write_tm_constrs_h): Delete variable p.
        * genconditions.c (write_header): Add tm-constrs.h to included
        headers.
        * genpeep.c (main): Add toplev.h to included headers.
        * Makefile.in (build/gencondmd.o): Add tm-constrs.h dependency.
        (build/genpeep.o): Add toplev.h dependency.
        * config/rs6000/constraints.md: Add "W" constraint.

2006-03-29  Roger Sayle  <roger@eyesopen.com>

        * stor-layout.c (mode_for_size_tree): Remove restiction on type
        sizes by correctly testing whether the size fits a host integer.
        (initialize_sizetypes): Use set_min_and_max_values_for_integral_type
        to correctly set TYPE_MIN_VALUE and TYPE_MAX_VALUE to the full
        SImode range for the default sizetype and bitsizetype.

2006-03-29  Roger Sayle  <roger@eyesopen.com>

        * convert.c (convert_to_pointer): Preserve the TREE_OVERFLOW
        and TREE_CONSTANT_OVERFLOW bits of the argument.  Return
        quickly if the argument is already of the correct type.
        Call fold_build1 instead of build1.  Tidy up blank lines.

2006-03-29  David Edelsohn  <edelsohn@gnu.org>

        * genemit.c (main): Add tm-constrs.h to included headers.
        * genoutput.c (output_prologue): Add tm-constrs.h to included headers.
        * genpeep.c (main): Add tm-constrs.h to included headers.
        * genpreds.c (write_satisfies_constraint_fns): Rename to ...
        (write_tm_constrs_h): this and write complete file.
        (write_tm_preds_h): Do not emit satisfies_constraint fns.
        (write_insn_preds_c): Add tm-constrs.h to included headers.
        (gen_constrs): New variable.
        (parse_option): Parse "-c".
        (main): Invoke write_tm_constrs_h.
        * genrecog.c (write_header): Add tm-constrs.h to included headers.
        * Makefile.in (STAGECOPYSTUFF): Add tm-constrs.h.
        (object_out_file): Add tm-constrs.h dependency.
        (insn-emit.o): Same.
        (insn-output.o): Same.
        (insn-peep.o): Same.
        (insn-preds.o): Same.
        (insn-recog.o): Same.
        (tm-constsr.h): New target.
        (s-constrs-h): New target.

        * config/rs6000/constraints.md: New file.
        * config/rs6000/rs6000.c: Include tm-constrs.h.
        (num_insn_constant_wide): Convert to satisfies_constraint.
        (rs6000_rtx_costs): Convert to satisfies_constraint.
        * config/rs6000/rs6000.h (REG_CLASS_FROM_LETTER): Delete.
        (CONST_OK_FOR_LETTER_P): Delete.
        (CONST_DOUBLE_OK_FOR_LETTER_P): Delete.
        (EXTRA_CONSTRAINT): Delete.
        (EXTRA_MEMORY_CONSTRAINT): Delete.
        (EXTRA_ADDRESS_CONSTRAINT): Delete.
        * config/rs6000/predicates.md: Convert to satisfies_constraint.
        * config/rs6000/rs6000.md: Include constraints.md.  Convert to
        satisfies_constraint.

        * config/i386/i386.c: Include tm-constrs.h.

2006-03-29  Sebastian Pop  <pop@cri.ensmp.fr>

        * tree-loop-linear.c (compute_data_dependences_for_loop): Adjust calls.
        * tree-data-ref.c (find_data_references_in_loop,
        compute_data_dependences_for_loop): Use pointers to VEC.
        (analyze_all_data_dependences): Adjust calls.
        * tree-data-ref.h (find_data_references_in_loop,
        compute_data_dependences_for_loop): Adjust declarations.
        * tree-vect-analyze.c (vect_analyze_data_refs): Adjust call to
        compute_data_dependences_for_loop.

2006-03-29  Paul Brook  <paul@codesourcery.com>

        * config/arm/vfp.md (movsf_vfp): Disparage w<->r alternatives.
        (movdf_vfp): Ditto.

2006-03-29  Sebastian Pop  <pop@cri.ensmp.fr>

        PR tree-optimization/26859
        * tree-ssa-loop-niter.c (infer_loop_bounds_from_undefined): Avoid
        division by zero.
        (convert_step): Remove TREE_OVERFLOW and TREE_CONSTANT_OVERFLOW flags
        for the step after fold_convert.

2006-03-29  Paul Brook  <paul@codesourcery.com>

        * reload1.c (choose_reload_regs): Check for all RTX_AUTOINC operators.
        (inc_for_reload): Handle PRE_MODIFY and POST_MODIFY addresses.

2006-03-29  Paul Brook  <paul@codesourcery.com>

        PR middle-end/23623
        * targhooks.c (default_narrow_bitfield): New fuction.
        * targhooks.h (default_narrow_bitfield): add prototype.
        * target.h (gcc_target): Add narrow_volatile_bitfield.
        * target-def.h (TARGET_NARROW_VOLATILE_BITFIELD): Define.
        * stor-layout.c (get_best_mode): Use targetm.narrow_volatile_bitfield.
        * doc/tm.texi: Document TARGET_NARROW_VOLATILE_BITFIELDS.
        * config/arm/arm.c (TARGET_NARROW_VOLATILE_BITFIELD): Define.

2006-03-29  Andreas Krebbel  <krebbel1@de.ibm.com>

        * config.gcc (s390-*-linux-*, s390x-*-linux*): Add t-dfprules to 
        tmake_file.
        * config/s390/s390.c (S390_scalar_mode_supported_p): New function.
        (NR_C_MODES): Add TDmode, DDmode and SDmode.
        (s390_output_pool_entry, ): Accept MODE_DECIMAL_FLOAT.
        (s390_hard_regno_mode_ok): Disallow TDmode in integer regs.
        (s390_function_arg_float): Allow SDmode and DDmode values to be
        passed in floating point registers.
        (s390_function_arg_integer, s390_function_value): Replace MODE_FLOAT 
        check with SCALAR_FLOAT_MODE_P.
        (TARGET_SCALAR_MODE_SUPPORTED_P): Define target macro.

2006-03-28  Zdenek Dvorak <dvorakz@suse.cz>

        PR tree-optimization/25985
        * tree-ssa-loop-niter.c (number_of_iterations_le,
        number_of_iterations_ne): Make comments more precise.
        (number_of_iterations_cond): Add only_exit argument.  Use the
        fact that signed variables do not overflow only when only_exit
        is true.
        (loop_only_exit_p): New.
        (number_of_iterations_exit): Pass result of loop_only_exit_p to
        number_of_iterations_cond.

2006-03-28  Zdenek Dvorak <dvorakz@suse.cz>

        PR tree-optimization/26643
        * tree-ssa-loop-ivopts.c (find_interesting_uses_address): Do not handle
        bit_field_refs.

2006-03-28  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/sh.md (udivsi3_i4_int): Clobber MACH_REG and MACL_REG.
        (divsi3_i4_int): Likewise.

2006-03-28  Roger Sayle   <roger@eyesopen.com>

        * expr.c (emit_group_store): Only create a new pseudo reg if the
        quantity it needs to hold isn't already a suitable pseudo.

2006-03-28  Jeff Law  <law@redhat.com>

        * timevar.def (TV_TREE_PHI_CPROP): New timevar.
        * tree-ssa-dom.c (pass_phi_only_cprop): Use it.

2006-03-28  Roger Sayle  <roger@eyesopen.com>

        * fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & Y) ^ Y as
        the equivalent ~X & Y, and the symmetry related transformations.
        (fold_binary) <BIT_AND_EXPR>: Similarly, fold (X ^ Y) & Y as 
        ~X & Y, and symmetry related transforms.

2006-03-28  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        Revert my 2006-03-27 patches.

2006-03-28  Roger Sayle  <roger@eyesopen.com>

        * fold-const.c (fold_unary) <NOP_EXPR>: Fold (T1)(~(T2)X) as
        ~(T1)X, when T1 and T2 are integer types of the same precision
        and (T2)X isn't an extension.

2006-03-28  Jeff Law  <law@redhat.com>

        PR tree-optimization/26796
        * tree-ssa-dom.c (propagate_rhs_into_lhs): Queue blocks which
        need EH edge cleanups rather than purging them immediately.
        (eliminate_degenerate_phis): Handle queued EH cleanups.

2006-03-28  Daniel Berlin  <dberlin@dberlin.org>

        * tree-ssa-alias.c (create_sft): Initially inherit TREE_ADDRESSABLE
        from parent_var.

2006-03-27  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/22524
        * fold-const.c (fold_binary) <MINUS_EXPR>: Call fold_convert to
        cast BIT_NOT_EXPR operand to the correct type.

2006-03-27  Sebastian Pop  <pop@cri.ensmp.fr>

        * tree-loop-linear.c: Don't include varray.h.
        (gather_interchange_stats, try_interchange_loops,
        linear_transform_loops): Use VEC instead of VARRAY.
        * lambda-mat.c: Don't include varray.h.
        * tree-chrec.c: Same.
        * lambda-trans.c: Same.
        * tree-vectorizer.c (new_loop_vec_info, destroy_loop_vec_info): Use
        VEC instead of VARRAY.
        * tree-vectorizer.h: Idem.
        * tree-data-ref.c (dump_data_references,
        dump_data_dependence_relations, dump_dist_dir_vectors, dump_ddrs,
        initialize_data_dependence_relation, finalize_ddr_dependent,
        compute_all_dependences, find_data_references_in_loop,
        compute_data_dependences_for_loop, analyze_all_data_dependences,
        free_dependence_relation, free_dependence_relations,
        free_data_refs): Idem.
        * tree-data-ref.h (data_reference_p, subscript_p): New.
        (data_dependence_relation, DDR_SUBSCRIPT, DDR_NUM_SUBSCRIPTS): Use
        VEC instead of VARRAY.
        (DDR_SUBSCRIPTS_VECTOR_INIT): Removed.
        (find_data_references_in_loop, compute_data_dependences_for_loop,
        dump_ddrs, dump_dist_dir_vectors, dump_data_references,
        dump_data_dependence_relations, free_dependence_relations,
        free_data_refs): Adjust declaration.
        (lambda_transform_legal_p): Move declaration here...
        * tree-vect-analyze.c (vect_analyze_data_ref_dependences,
        vect_compute_data_refs_alignment, vect_verify_datarefs_alignment,
        vect_enhance_data_refs_alignment, vect_analyze_data_ref_accesses,
        vect_analyze_data_refs): Use VEC instead of VARRAY.
        * lambda.h (lambda_transform_legal_p): ...from here.
        * lambda-code.c (lambda_transform_legal_p): Use VEC instead of VARRAY.
        * tree-vect-transform.c (vect_update_inits_of_drs): Idem.
        * Makefile.in (tree-loop-linear.o, lambda-mat.o, lambda-trans.o,
        tree-chrec.o): Don't depend on VARRAY_H.

2006-03-27  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        * rtl.def (Copyright): Update date.
        (DEPS_LIST): Change type of the second operand to 'int'.
        * target.h (Copyright): Update date.
        (struct gcc_target.speculate_insn): Change type of the second parameter
        to 'int'.
        * lists.c (Copyright): Update date.
        (alloc_DEPS_LIST): Change signature.  Update reference to the second
        operand of the DEPS_LIST.
        (copy_DEPS_LIST_list): Update reference to the second operand of the
        DEPS_LIST.
        * rtl.h (Copyright): Update date.
        (alloc_DEPS_LIST): Update signature.
        * sched-int.h (Copyright): Update date.
        (ds_t): Change typedef to 'int'.
        (DEP_STATUS, BITS_PER_DEP_STATUS): Update.

2006-03-27  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        * haifa-sched.c (Copyright): Update date.
        (try_ready): Change condition to restore non-speculative pattern
        of the instruction.
        (process_insn_depend_be_in_spec): Code to keep probability of the
        speculative dependence non-decreasing.

2006-03-27  Bernd Schmidt  <bernd.schmidt@analog.com>

        * regrename.c (replace_oldest_value_addr): Initialize a variable to
        shut up the compiler.

2006-03-27  J"orn Rennecke <joern.rennecke@st.com>

        * config/sh/t-sh ($(T)libic_invalidate_array_4-100.a): Fix rule
        to use lib prefix for target.
        ($(T)libic_invalidate_array_4-200.a): Likewise.
        ($(T)libic_invalidate_array_4a.a): Likewise.

2006-03-27  Andrew Stubbs <andrew.stubbs@st.com>
            J"orn Rennecke <joern.rennecke@st.com>

        * superh.opt: New file.
        * sh.c (boardtype, osruntime): Remove.
        * superh.h (SUBTARGET_OPTIONS): Remove.
        * config.gcc (sh*-superh-elf): Add sh/superh.opt to extra_options.

        * config.gcc (sh*-*-*): Don't use c-c ranges for tr.  Quote sed
        arguments with ^ and/or [].

        * config.gcc (sh-*-*): Add quoting to account for quirk of
        Solaris /bin/sh.
        Replace == with = in enable_incomplete_targets test.

        * config/sh/superh.h (SUBTARGET_LINK_SPEC): Replace LITTLE_ENDIAN_BIT
        with MASK_LITTLE_ENDIAN.

        * config.gcc (sh*-superh-elf): Add sh/superh.h to tm_file.
        * config/sh/sh.opt: Added to some comments.
        * config/sh/superh.h: Removed some chaff.

        * config/sh/sh.opt: Add m4-[1234]00* options.
        * config/sh/sh.c (sh_handle_option): Likewise.
        * config/sh/t-sh (IC_EXTRA_PARTS, EXTRA_MULTILIB_PARTS): Define.
        (ic_invalidate_array_4-100.o): New rule.
        ($(T)libic_invalidate_array_4-100.a): Likewise.
        (ic_invalidate_array_4-200.o): Likewise.
        ($(T)libic_invalidate_array_4-200.a): Likewise.
        (ic_invalidate_array_4a.o): Likewise.
        ($(T)libic_invalidate_array_4a.a): Likewise.
        * config/sh/t-elf (EXTRA_MULTILIB_PARTS): Add IC_EXTRA_PARTS.
        * config/sh/embed-elf.h (LIBGCC_SPEC): Add clauses for m4-100*,
        m4-200*, and m4a*.
        * config/sh/crt1.asm: Merged in profiling code.
        * config/sh/superh.h (STARTFILE_SPEC): Override.
        * config/sh/t-superh: Override EXTRA_MULTILIB_PARTS.
        Add rules for $(T)crt1-mmu.o, $(T)gcrt1-mmu.o and $(T)gcrt1.o.
        * config.gcc (sh*-superh-elf): Add t-superh to tmake_file.

        * t-sh (MULTILIB_MATCHES): Add sh4-[1245]00* variants.
        * config/sh/t-superh: Removed now-redundant MULTILIB_OPTIONS /
        MULTILIB_DIRNAMES / MULTILIB_MATCHES settings.

        * sh.opt (mpretend-cmove): New option.
        * sh.h (OPERRIDE_OPTIONS): Switch it off if not TARGET_SH1.
        * sh.md (movsicc_t_false, movsicc_t_tru): New patterns.
        (movsicc): Add TARGET_PRETEND_CMOVE code.

2006-03-27  Andreas Krebbel  <krebbel1@de.ibm.com>

        * config/s390/s390-protos.h (s390_hard_regno_mode_ok, 
        s390_class_max_nregs): New function prototypes.
        * config/s390/s390.c (REGNO_PAIR_OK): New macro.
        (s390_hard_regno_mode_ok, s390_class_max_nregs): New functions.
        * config/s390/s390.h (HARD_REGNO_NREGS, HARD_REGNO_MODE_OK,
        CLASS_MAX_NREGS): Macro bodies replaced by function calls.

2006-03-26  Geoffrey Keating  <geoffk@apple.com>

        * dwarf2out.c (add_location_or_const_value_attribute): Call
        tree_add_const_value_attribute if nothing else works.
        (reference_to_unused): New.
        (rtl_for_decl_init): Use reference_to_unused to decide whether
        to output an initializer.

2006-03-27  Alan Modra  <amodra@bigpond.net.au>

        PR target/26459
        * config/rs6000/rs6000.md (DF reg move peephole): Prevent
        peephole removing spe frob_di_df_2.

2006-03-26  Sebastian Pop  <pop@cri.ensmp.fr>

        * tree-data-ref.c: Rename DDR_SIZE_VECT to DDR_NB_LOOPS.
        (subscript_dependence_tester_1): Declared.
        (print_dir_vectors, print_dist_vectors): New.
        (debug_data_dependence_relation): New.
        (dump_data_dependence_relation): Print more details.
        (initialize_data_dependence_relation): Initialize DDR_LOOP_NEST.
        (analyze_subscript_affine_affine): Don't ICE when gcd_alpha_beta is 0.
        (save_dist_v, save_dir_v, add_outer_distances,
        build_classic_dist_vector_1): New.
        (build_classic_dist_vector): Rewrite to work on DDR_LOOP_NEST.
        Don't test for lambda_vector_lexico_pos.
        (same_access_functions, add_multivariate_self_dist,
        add_other_self_distances, dir_from_dist): New.
        (build_classic_dir_vector): Replace implementation almost identical to 
        build_classic_dist_vector with a walk of DDR_DIST_VECTS with a call to
        dir_from_dist.
        (subscript_dependence_tester_1): New.
        (subscript_dependence_tester): Handle the lexicographically negative
        distance vectors by recomputing the dependence relation.
        (compute_affine_dependence): Remove parameter loop_nest_depth.
        (compute_self_dependence): Don't call compute_subscript_distance.
        (compute_all_dependences): Remove parameters nb_loops, loop_nest_depth.
        Add a parameter for the loop_nest.
        (find_loop_nest_1, find_loop_nest): New.
        (compute_data_dependences_for_loop): Compute the loop nest, and give
        up if the nest is not well formed.
        * tree-data-ref.h (loop_p): New.
        (struct data_dependence_relation): Replace size_vect field with 
        loop_nest, a vec of loops.
        (DDR_SIZE_VECT): Renamed DDR_NB_LOOPS.
        (DDR_LOOP_NEST): New.
        (print_dir_vectors, print_dist_vectors,
        debug_data_dependence_relation): Declared.
        (index_in_loop_nest): New.
        * tree-vect-analyze.c (vect_analyze_data_ref_dependence): Use
        DDR_LOOP_NEST and index_in_loop_nest to determine the dependence
        distance.

2006-03-25  Adam Nemet  <anemet@caviumnetworks.com>

        * simplify-rtx.c (simplify_relational_operation): Call
        simplify_relational_operation_1 even if mode is VOIDmode.

2006-03-25  Daniel Berlin  <dberlin@dberlin.org>

        PR tree-optimization/26804
        * tree.h (DECL_CALL_CLOBBERED): New macro.
        (tree_decl_common): Add call_clobbered_flag.
        * tree-flow-inline.h (is_call_clobbered): Use DECL_CALL_CLOBBERED.
        (mark_call_clobbered): Set DECL_CALL_CLOBBERED.
        (clear_call_clobbered): Clear DECL_CALL_CLOBBERED.
        (mark_non_addressable): Ditto.
        * tree-ssa.c (verify_call_clobbered): New function.
        (verify_alias_info): Use it.
        * tree-pass.h (pass_reset_cc_flags): New prototype.
        * tree-ssa-alias.c (pass_reset_cc_flags): New structure.
        (reset_cc_flags): New function.
        * passes.c (init_optimization_passes): Call reset_cc_flags after
        initializing referenced_vars.

2006-03-25  Uros Bizjak  <uros@kss-loka.si>
            Roger Sayle  <roger@eyesopen.com>

        PR middle-end/26717
        * fold-const.c (fold_binary) [RDIV_EXPR]: Do not optimize A / A
        to 1.0 for non-real operands. Implement A / A optimization for
        complex operands.

2006-03-25  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (size_cost): Correct the comment for
        cost of storing fp registers.
        (i386_cost): Likewise.
        (i486_cost): Likewise.
        (pentium_cost): Likewise.
        (pentiumpro_cost): Likewise.
        (k6_cost): Likewise.
        (athlon_cost): Likewise.
        (k8_cost): Likewise.
        (pentium4_cost): Likewise.
        (nocona_cost): Likewise.
        (generic64_cost): Likewise.
        (generic32_cost): Likewise.

2006-03-24  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr-protos.h (extra_constraint): Delete.
        (extra_constraint_Q): New declaration.
        * config/avr/constraints.md: New file.
        * config/avr/avr.md: Include it.
        (REG_X, REG_Y, REG_Z, REG_W): New constants.
        (TMP_REGNO, ZERO_REGNO): Likewise.
        (UNSPEC_STRLEN, UNSPEC_INDEX_JMP): Likewise.
        * config/avr/avr.c (avr_reg_class_from_letter): Delete.
        (extra_constraint): Delete.
        (extra_constraint_Q): Test for memory constraint 'Q'.
        * config/avr/avr.h (REG_X,REG_Y,REG_Z,REG_W): Delete.
        (REG_CLASS_FROM_LETTER): Delete.
        (CONST_OK_FOR_LETTER_P): Delete.
        (CONST_DOUBLE_OK_FOR_LETTER_P): Delete.
        (EXTRA_CONSTRAINT): Delete.
        (TMP_REGNO): Delete.
        (ZERO_REGNO): Delete.

2006-03-24  Jeff Law  <law@redhat.com>

        * tree-ssa-dom.c (propagate_rhs_into_lhs): Don't call update_stmt
        directly.  Call mark_new_vars_to_rename slightly earlier.

2006-03-24  Geoffrey Keating  <geoffk@apple.com>

        * dwarf2out.c (is_c_family): Understand new DWARF3 language types.
        (is_cxx): Likewise.
        (gen_compile_unit_die): Use new language types for Objective-C and
        Objective-C++.
        (dwarf2out_decl): Use is_cxx rather than testing explicitly against
        DW_LANG_C_plus_plus.

        PR 26793
        * config/t-darwin (crt3.o): Work around bug 26840.
        * config/darwin-crt3.c: Rewrite.
        * config/darwin.h (STARTFILE_SPEC): Don't use -l for crt3.o.

2006-03-24  Carlos O'Donell  <carlos@codesourcery.com>

        * doc/invoke.texi: Document -femit-class-debug-always
        * common.opt: Add -femit-class-debug-always.

2006-03-24  Andreas Krebbel  <krebbel1@de.ibm.com>

        * config/s390/s390.c (s390_decompose_address): Allow SImode for
        index and base register.
        (s390_expand_plug_operand, legitimate_address_p, preferred_la_operand_p,
        print_operand_address, print_operand): Replaced REG_OK_FOR_BASE_STRICT_P
        with REGNO_OK_FOR_BASE_P and REG_OK_FOR_INDEX_STRICT_P with
        REGNO_OK_FOR_INDEX_P.
        * config/s390/s390.h (REGNO_OK_FOR_INDEX_P): Replaced check with
        ADDR_REGNO_P.
        (REG_OK_FOR_INDEX_NONSTRICT_P, REG_OK_FOR_BASE_NONSTRICT_P,
        REG_OK_FOR_INDEX_STRICT_P, REG_OK_FOR_BASE_STRICT_P, REG_OK_FOR_INDEX_P,
        REG_OK_FOR_BASE_P): Definitions removed.

2006-03-24  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/26611
        * gimplify.c (gimplify_bind_expr): Only call omp_add_variable on
        non-global variables that don't have DECL_SEEN_IN_BIND_EXPR_P bit
        set yet or weren't marked as local yet.

2006-03-24  Bernd Schmidt  <bernd.schmidt@analog.com>

        * regrename.c (scan_rtx_address): Initialize a variable to shut up
        the compiler.

2006-03-24  Eric Botcazou  <ebotcazou@adacore.com>

        * config/rs6000/rs6000-protos.h (rs6000_offsettable_memref_p): Declare.
        (rs6000_legitimate_small_data_p): Delete.
        * config/rs6000/rs6000.c (rs6000_offsettable_memref_p): New predicate.
        (rs6000_legitimate_small_data_p): Rename to legitimate_small_data_p
        and make static.  Add forward declaration.  Update uses.
        (rs6000_split_multireg_move): Use rs6000_offsettable_memref_p instead
        of offsettable_memref_p.
        * config/rs6000/rs6000.md (movdf_hardfloat32): Revert 2005-08-23 fix.
        Use rs6000_offsettable_memref_p instead of a less accurate predicate.

2006-03-24  Jeff Law  <law@redhat.com>

        * tree-ssa-dom.c (propagate_rhs_into_lhs): Temporarily work
        around bug in immediate-use iterator.

2006-03-24  Alan Modra  <amodra@bigpond.net.au>

        PR target/26607
        * config/rs6000/darwin-ldouble.c: Don't compile when __NO_FPRS__
        or __LITTLE_ENDIAN__.

2006-03-23  J"orn Rennecke <joern.rennecke@st.com>

        * config/sh/divtab-sh4.c, config/sh/divcost-analysis: New files.
        * config/sh/lib1funcs.asm (div_table): Add !__SH5__ variant.
        * config/sh/t-sh (LIB1ASMFUNCS): Add _div_table.
        * config/sh/sh.opt (mdiv=): Amend description.
        * config/sh/sh.h (TARGET_DIVIDE_CALL_DIV1): New macro.
        (TARGET_DIVIDE_CALL_FP, TARGET_DIVIDE_CALL_TABLE): Likewise.
        (sh_divide_strategy_e): Add new members SH_DIV_CALL_DIV1,
        SH_DIV_CALL_FP, SH_DIV_CALL_TABLE and SH_DIV_INTRINSIC.
        (OVERRIDE_OPTIONS): Also process sh_div_str for TARGET_SH1.
        Calculate sh_divsi3_libfunc using TARGET_DIVIDE_* macros.
        * config/sh/sh.md (udivsi3_i4_int, divsi3_i4_int): New patterns.
        (udivsi3, divsi3): Use them.  Check TARGET_DIVIDE_CALL_TABLE /
        TARGET_DIVIDE_CALL_FP.

2006-03-23  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        * haifa-sched.c (choose_ready): Fix type of the local variable.
        Move local variables.  Add comment.
        (check_reg_live): Change signature.  Make callable from debugger.
        * sched-int.h (check_reg_live): Update signature.
        * sched-ebb.c (check_reg_live): Update parameters.
        * sched-rgn.c (check_reg_live): Ditto.
        (region_head_or_leaf_p): Check pointer before dereferencing.
        * config/ia64/ia64.c (ia64_set_sched_flags): Disable data speculation
        before reload on optimization levels below 1.

2006-03-23  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.c (alpha_legitimate_constant_p): Reject
        tls symbols.

        PR target/26347
        * config/alpha/predicates.md (local_symbolic_operand): Reject
        weak symbols.

2006-03-23  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/26795
        * tree-ssa-pre.c (create_value_expr_from): Don't reject
        expressions which have overflowed constants.

2006-03-23  Zdenek Dvorak <dvorakz@suse.cz>

        * cse.c (cse_end_of_basic_block): Do not check for LOOP_END note.

2006-03-23  Zdenek Dvorak <dvorakz@suse.cz>

        * cfgloopmanip.c (create_loop_notes): Removed.
        * final.c (final_scan_insn): Do not handle loop notes.
        * jump.c (squeeze_notes): Ditto.
        * cfglayout.c (skip_insns_after_block,
        duplicate_insn_chain): Ditto.
        * cfgcleanup.c (rest_of_handle_jump2): Do not call
        create_loop_notes.
        * cfgloop.h (create_loop_notes): Declaration removed.

2006-03-23  Richard Sandiford  <richard@codesourcery.com>

        * varasm.c (output_constant_pool): Restore fnname and fndecl
        arguments.
        (assemble_start_function): Adjust call accordingly.
        (assemble_end_function): Likewise.

2006-03-22  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>

        PR mudflap/26790
        * tree-mudflap.c (mudflap_finish_file): Skip erroneous objects.

        PR mudflap/26789
        * tree-mudflap.c (mf_xform_derefs_1): Return early on error_mark_node.

2006-03-22  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>

        PR driver/22600
        * system.h (ICE_EXIT_CODE): New macro.
        * diagnostic.c (diagnostic_count_diagnostic): Exit with ICE_EXIT_CODE.
        (diagnostic_action_after_output): Likewise.
        * gcc.c (fatal_ice): New function.
        (execute): Use it instead of fatal.
        (fancy_abort): Likewise.
        * doc/invoke.texi (-pass-exit-codes): Document return code for ICEs.

2006-03-22  Jeff Law  <law@redhat.com>

        * loop-unroll.c (analyze_iv_to_split_insn): Handle
        iv_analyze_result returning false.

2006-03-22  Jie Zhang  <jie.zhang@analog.com>

        * config/bfin/bfin.h (ASM_FORMAT_PRIVATE_NAME): Remove.

2006-03-22  Richard Henderson  <rth@redhat.com>

        PR middle-end/26084
        * except.c (duplicate_eh_regions_0): New.
        (duplicate_eh_region_1): Duplicate the children of the node as
        well as the node itself.  Link them up properly.
        (duplicate_eh_region_2): Merge into ...
        (duplicate_eh_regions): ... here.  Take copy_region argument, and
        copy only a sub-tree if asked.  Simplify copying and fixup.
        (eh_region_outer_p): New.
        * except.h (duplicate_eh_regions): Update decl.
        (eh_region_outer_p): Declare.
        * omp-low.c (lower_omp_single): Fix eh region placement wrt OMP_RETURN.
        (lower_omp_master): Likewise.
        (lower_omp_ordered): Likewise.
        * tree-cfg.c (struct move_stmt_d): Add new_label_map.
        (move_stmt_r): Use it to remap labels.  Handle recursion vs
        remap_decls_p properly.
        (move_block_to_fn): Pass in new_label_map.  Remap RESX_EXPR.
        (find_outermost_region_in_block): New.
        (new_label_mapper): New.
        (move_sese_region_to_fn): Copy eh information to the new function
        properly.
        * tree-inline.c (copy_cfg_body): Update for new duplicate_eh_regions
        argument.
        * tree-pretty-print.c (dump_generic_node): Dump RESX_EXPR region
        number.

2006-03-22  Richard Sandiford  <richard@codesourcery.com>

        * doc/md.texi (-mshared): Mention that -mshared code can be linked
        into shared libraries.

2006-03-22  Richard Sandiford  <richard@codesourcery.com>

        * doc/md.texi: Refer to i386/constraints.md instead of
        i386/predicates.md.
        * config/i386/constraints.md: New file, extracted from...
        * config/i386/predicates.md: ...here.
        * config/i386/i386.md: Include constraints.md.

2006-03-21  Jason Merrill  <jason@redhat.com>

        * builtins.c (expand_builtin_fork_or_exec): Fix pasto.

        PR middle-end/20297
        * expr.c (init_block_move_fn): Force default visibility.
        (init_block_clear_fn): Likewise.
        * builtins.c (expand_builtin_fork_or_exec): Likewise.
        * targhooks.c (default_external_stack_protect_fail): Likewise.

2006-03-21  Richard Sandiford  <richard@codesourcery.com>

        * config/mips/predicates.md (const_call_insn_operand): Allow direct
        calls to locally-defined functions if TARGET_ABSOLUTE_ABICALLS.
        * config/mips/mips.md (jal_macro): Test TARGET_ABSOLUTE_ABICALLS.
        Use TARGET_OLDABI instead of !TARGET_NEWABI.
        (loadgp): Use mips_current_loadgp_style.
        (loadgp_noshared): New pattern.
        (sibcall_internal): Use MIPS_CALL.
        (sibcall_value_internal): Likewise.
        (sibcall_value_multiple_internal): Likewise.
        (call_internal): Likewise.
        (call_value_internal): Likewise.
        (call_value_multiple_internal): Likewise.
        (call_split): Use MIPS_CALL and add an 'S' constraint.
        (call_value_split): Likewise.
        (call_value_multiple_split): Likewise.
        * config/mips/mips.opt (-mabicalls): Tweak docstring.
        (-mshared): New option.
        * config/mips/mips-protos.h (mips_loadgp_style): New enum.
        (mips_current_loadgp_style): Declare.
        * config/mips/mips.c (mips_classify_symbol): Avoid using
        SYMBOL_GOT_LOCAL if TARGET_ABSOLUTE_ABICALLS.  Use SYMBOL_GENERAL
        rather than SYMBOL_GOT_GLOBAL for locally-binding symbols if
        TARGET_ABSOLUTE_ABICALLS.
        (override_options): Adjust comments.  Improve the warning that is
        issued when -mabicalls and -G are used together.
        (mips_file_start): Remove comment.
        (mips_current_loadgp_style): New function.
        (mips_gnu_local_gp): New variable.
        (mips_emit_loadgp): Use mips_current_loadgp_style.  Handle
        LOADGP_ABSOLUTE.
        (mips_output_function_prologue): Use mips_current_laodgp_style.
        (mips_expand_prologue): Call mips_emit_loadgp before emitting
        the cprestore instruction.
        (mips_extra_live_on_entry): Fix reversed test.  Don't make $25
        live for TARGET_ABSOLUTE_ABICALLS.
        * config/mips/mips.h (TARGET_ABSOLUTE_ABICALLS): New macro.
        (ASM_SPEC): Pass down -mshared and -mno-shared.
        (MIPS_CALL): New macro.
        * config/mips/netbsd.h (TARGET_OS_CPP_BUILTINS): Remove __ABICALLS__
        definition.
        * doc/invoke.texi (-mabicalls): Update documentation.
        (-mshared): Document.

2006-03-21  Steve Ellcey  <sje@cup.hp.com>

        * config/ia64/unwind-hpux.c: New file.
        * config/ia64/t-hpux: Add unwind-hpux.c to libgcc.

2006-03-21  Steve Ellcey  <sje@cup.hp.com>

        PR libgomp/26384
        * config/pa/pa64-hpux.h (LIB_SPEC): Fix for -mt and -pthread options.

2006-03-21  Jeff Law  <law@redhat.com>

        * tree-vrp.c (extract_range_from_unary_expr): Derive ranges for
        type conversions of a VR_VARYING source to a wider type.

2006-03-21  Eric Botcazou  <ebotcazou@libertysurf.fr>

        * config.gcc (i[34567]86-*-solaris2*): Add config/sol2-10.h to
        tm_file on Solaris 10 and later.
        (sparc64-*-solaris2*): Likewise.
        (sparc-*-solaris2*): Likewise.
        * config/sol26.h: Rename to config/sol2-6.h.
        * config/sol2-10.h: New file.

2006-03-21  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/26781
        * tree-ssa-pre.c (create_component_ref_by_pieces):
        Handle STRING_CST.

2006-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/26690
        * tree.c (get_callee_fndecl): If CALL is error_mark_node,
        return it immediately.

2006-03-21  Michael Matz  <matz@suse.de>

        * genautomata.c (<struct state>, num_out_arcs, presence_signature):
        New members.
        (remove_arc, add_arc): Update num_out_arcs member.
        (set_out_arc_insns_equiv_num): Returns nothing instead of number
        of out arcs.
        (cache_presence): New function.
        (compare_states_for_equiv): New function.
        (state_is_differed): Don't take number of outargs, adjust callers.
        Use new invariant for speeding up.
        (init_equiv_class): Create initial classes based on sorted
        input.
        (partition_equiv_class): Don't track out_arcs_num.
        (evaluate_equiv_classes): Call cache_presence on all states and
        sort them.

2006-03-21  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/bfin-protos.h (bfin_dsp_memref_p): Declare.
        * config/bfin/bfin.c (bfin_dsp_memref_p): New function.
        (bfin_valid_reg_p): Test for pseudos explicitly and use only
        REGNO_MODE_CODE_OK_FOR_BASE_P.  New args MODE and OUTER_CODE; all
        callers changed.
        * config/bfin/bfin.h (PREG_P): Use P_REGNO_P.
        (IREG_P, P_REGNO_P, I_REGNO_P): New macros.
        (enum reg_class, REG_CLASS_CONTENTS): Add IPREGS.
        (BASE_REG_CLASS, REG_OK_FOR_BASE_P, REG_OK_FOR_INDEX_P,
        REGNO_OK_FOR_BASE_STRICT_P, REGNO_OK_FOR_BASE_NONSTRICT_P): Delete
        macros.
        (IREG_POSSIBLE_P, MODE_CODE_BASE_REG_CLASS,
        REGNO_MODE_CODE_OK_FOR_BASE_P): New macros.
        (REGNO_REG_CLASS): ARGP is in PREGS.
        * config/bfin/bfin.md (movhi_insn): Allow for addresses containing
        IREGS.
        (zero_extendhisi2, extendhisi2): Likewise; changed to define_and_split
        to deal with those addresses.
        * addresses.h: New file.
        * caller-save.c: Include "addresses.h".
        (init_caller_save): Use new base_reg_class function.
        * rtl-factoring.c: Include "addresses.h".
        (recompute_gain_for_pattern_seq): Use new function ok_for_base_p_1.
        * recog.c: Include "addresses.h".
        (preprocess_constraints): Use new base_reg_class function.
        * regrename.c: Include "addresses.h".
        (scan_rtx_address): Use new regno_ok_for_base_p and base_reg_class
        functions.  Keep track of a new var INDEX_CODE to compute valid
        classes.
        (replace_oldest_value_addr): Likewise.
        (replace_oldest_value_mem): Use base_reg_class.
        * reload.c: Include "addresses.h".
        (REGNO_MODE_OK_FOR_BASE_P, REG_MODE_OK_FOR_BASE_P): Delete macros.
        (find_reloads): Use new base_reg_class function.
        (find_reloads_address): Likewise; also use regno_ok_for_base_p.
        (find_reloads_address_1): Likewise. New args OUTER_CODE and INDEX_CODE;
        all callers and prototype changed.
        * reload1.c: Include "addresses.h".
        (maybe_fix_stack_asms): Use base_reg_class.
        * regclass.c: Include "addresses.h".
        (ok_for_index_p_nonstrict, ok_for_base_p_nonstrict): New functions.
        (init_reg_autoinc): Use new base_reg_class function.
        (record_reg_classes): Likewise.
        (record_address_regs): Delete arg CLASS; add args CONTEXT, MODE,
        OUTER_CODE and INDEX_CODE.  All callers and prototype changed.
        Use new args to compute necessary class.

        * Makefile.in (regclass.o, reload.o, reload1.o, caller-save.o, recog.o,
        regrename.o, rtl-factoring.o): Update dependencies.
        * doc/tm.texi (MODE_CODE_BASE_REG_CLASS): Document.
        (REGNO_MODE_CODE_OK_FOR_BASE_P): Likewise.
        (REG_OK_FOR_BASE_P, REG_MODE_OK_FOR_BASE_P, REG_MODE_OK_FOR_REG_BASE_P,
        REG_OK_FOR_INDEX_P): Delete documentation.

2006-03-21  Alexey Starovoytov  <alexey.starovoytov@sun.com>

        * config.gcc (sparc-*-solaris2*): Change the default CPU setting
        from V7 to V9 for Solaris 7 and above.

2006-03-21  Toon Moene  <toon@moene.indiv.nluug.nl>

        * doc/invoke.texi: Document new flag -fargument-noalias-anything.
        * tree-ssa-alias.c (may_alias_p): If flag_argument_noalias > 2,
        argument pointers may not alias any other storage.
        * common.opt: Define option -fargument-noalias-anything.
        * tree-ssa-structalias.c (intra_create_variable_infos): Fortran
        alias semantics is specified by flag_argument_noalias > 2.

2006-03-20  Jeff Law  <law@redhat.com>

        * tree-pass.h (pass_phi_only_copy_prop): Delete.
        (pass_phi_only_cprop): Declare.
        * passes.c (init_optimization_passes): Replace pass_phi_only_copy_prop
        with phi_only_cprop
        * tree-ssa-dom.c (degenerate_phi_result): New function.
        (remove_stmt_or_phi, get_lhs_or_phi_result): Likewise.
        (get_rhs_or_phi_arg, propagate_rhs_into_lhs): Likewise.
        (eliminate_const_or_copy, eliminate_degenerate_phis_1): Likewise.
        (eliminate_degenerate_phis): Likewise.
        (pass_phi_only_cprop): New pass descriptor.
        * tree-ssa-copy.c (init_copy_prop): Lose PHIS_ONLY argument and
        support code.  Callers updated.
        (execute_copy_prop, do_copy_prop): Likewise and corresponding changes.
        (store_copy_prop): Likewise.
        (do_phi_only_copy_prop, pass_phi_only_copy_prop): Remove.

2006-03-20  Jason Merrill  <jason@redhat.com>

        PR c++/21764
        * c-pragma.c (visstack): Move out of handle_pragma_visibility.
        (push_visibility, pop_visibility): Likewise.
        * c-pragma.h: Declare them.

2006-03-20  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/sh.c (untangle_mova): Initialize n_addr and n_target.

        * config/sh/sh.c (find_regmode_weight): Change the type of the first
        parameter and use get_ebb_head_tail.
        (sh_md_init_global): Adjust uses of find_regmode_weight.

2006-03-20  Steven Bosscher  <stevenb.gcc@gmail.com>

        * function.h (struct function) <x_tail_recursion_reentry>:
        Rename to x_stack_check_probe_note.
        (tail_recursion_reentry): Rename to stack_check_probe_note.
        * function.c: Replace tail_recursion_reentry with
        stack_check_probe_note everywhere.
        (expand_function_start): Only emit a note for
        stack_check_probe_note with -fstack-protect.
        * stmt.c (expand_case): Don't emit NOTE_INSN_DELETED notes.

        * emit-rtl.c (remove_unnecessary_notes): Remove.
        (pass_remove_unnecessary_notes): Remove.
        * rtl.h (remove_unnecessary_notes): Remove prototype.
        * final.c (final_start_function): Don't call remove_unnecessary_notes.
        * tree-pass.h (pass_remove_unnecessary_notes): Remove.
        * passes.c (pass_remove_unnecessary_notes): Don't run it.

2006-03-20  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/26629
        * tree-ssa-pre (phi_translate): Handle ARRAY_REF's operands.
        (valid_in_set): Handle ARRAY_REF.
        Change "if min_variant or VH" to asserts.
        (create_component_ref_by_pieces): Handle ARRAY_REF.
        (create_expression_by_pieces): Likewise.
        (can_PRE_operation): ARRAY_REFs can now be PRE'd.

2006-03-20  David Edelsohn  <edelsohn@gnu.org>

        * genpreds.c (write_insn_extra_address_constraint): Argument `c'
        is operand of switch, not str[0].

2006-03-20  Alan Modra  <amodra@bigpond.net.au>

        * config/rs6000/rs6000.c (rs6000_handle_option): Use
        TARGET_NO_FP_IN_TOC inside #ifdef TARGET_USES_SYSV4_OPT too.

2006-03-19  David Edelsohn  <edelsohn@gnu.org>

        * genpreds.c (write_tm_preds_h): Add semicolon and newline at
        end of insn_extra_address_constraint declaration.

2006-03-19  David Edelsohn  <edelsohn@gnu.org>

        * config/rs6000/rs6000.opt (no-fp-in-toc): Use Var not Mask.
        (no-sum-in-toc): Same.
        * config/rs6000/rs6000.c (rs6000_handle_option): Use new
        variables.
        * config/rs6000/sysv4.h (SUBTARGET_OVERRIDE_OPTIONS): Set
        NO_FP_IN_TOC for -fPIC instead of mask.

        * config/rs6000/t-aix43 (T_ADAFLAGS): Delete.
        (BOOT_LDFLAGS): Delete.
        (LDFLAGS): Delete.
        * config/rs6000/t-aix52: Same.

        * config/rs6000/rs6000.md (store_multiple_power): Delete.
        (stmsi[345678]_power): New.

2006-03-17  Steve Ellcey  <sje@cup.hp.com>

        * config/ia64/ia64.opt: Add empty line to end of file.

2006-03-17  Richard Guenther  <rguenther@suse.de>

        PR middle-end/26721
        * builtins.c (get_pointer_alignment): For component style references
        adjust alignment to the component type alignment.  Make sure
        to adjust alignment for component access of constants.

2006-03-17  David Edelsohn  <edelsohn@gnu.org>

        * config/rs6000/rs6000.md (strlensi): Emit barrier after
        unconditional jump.

2006-03-17  Paul Brook  <paul@codesourcery.com>

        * doc/install.texi: Docuemnt --with-mode.
        * config.gcc: Add --with-mode for arm*-*-*.
        * config/arm/arm.h (OPTION_DEFAULT_SPECS): Add "mode".

2006-03-17  J"orn Rennecke <joern.rennecke@st.com>

        * sh.c (max_labelno_before_reorg): New variable.
        (sh_reorg): Initialize it.
        (find_barrier): Check max_labelno_before_reorg before using
        label_to_alignment.  Take length of explicit alignment insns
        into account.  When seeing a UNSPECV_CONST_END, return it.

        * sh.c (fixup_mova): Set mode of affected label to QImode.
        (untangle_mova): New function.
        (find_barrier): Use it.  Check mode of label before decrementing
        num_mova.
        (sh_reorg): Likewise.
        Set mode of all insns back to VOIDmode.

        * sh.c (MOVA_LABELREF): New macro.
        (mova_p, fixup_mova, sh_reorg): Use it.
        (find_barrier, sh_reorg): Don't count num_mova back to 0 unless
        ADDR_DIFF_VEC matches mova.

2006-03-17  Steven Bosscher  <stevenb.gcc@gmail.com>

        * dwarf2asm.c (dw2_asm_output_offset): Mark 'base' argument
        with ATTRIBUTE_UNUSED.

2006-03-17  Alexandre Oliva  <aoliva@redhat.com>

        * dwarf2out.c (dwarf2out_stack_adjust): Always track the stack
        pointer, instead of assuming it is possible to derive the
        correct args size from a call insn.

2006-03-16  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

        * rtl.h (CONST_INT_P): Define.
        * config/vax/vax.c (print_operand_address): Use CONST_INT_P()
        instead of GET_CODE(x) == CONST_INT.
        (vax_rtx_costs): Likewise.
        (vax_output_int_move): Likewise.
        (vax_output_int_add): Likewise.
        (legitimate_constant_address_p): Likewise.
        (index_term_p): Likewise.
        * config/vax/vax.h (PRINT_OPERAND): Likewise.
        * config/vax/vax.md (and<mode>3): Likewise.
        (ashrsi3): Likewise.
        (extv): Likewise.
        (movstricthi): Likewise.
        (movstrictqi): Likewise.
        (rotrsi3): Likewise.
        (five unnamed insns): Likewise.

2006-03-16  Geoffrey Keating  <geoffk@apple.com>

        * doc/tm.texi (SDB and DWARF): Add extra parameter to
        ASM_OUTPUT_DWARF_OFFSET.  Use @var to indicate metavariables.
        * dwarf2asm.h (dw2_asm_output_offset): Add section parameter.
        * dwarf2asm.c (dw2_asm_output_offset): Add base section parameter.
        Pass to ASM_OUTPUT_DWARF_OFFSET.
        * dwarf2out.c (debug_frame_section): New.
        (output_call_frame_info): Use debug_frame_section.  Pass it to
        dw2_asm_output_offset.
        (output_die): Pass appropriate section to dw2_asm_output_offset.
        (output_compilation_unit_header): Likewise.
        (output_pubnames): Likewise.
        (output_aranges): Likewise.
        (enum dw_val_class): Break dw_val_class_lbl_offset into
        dw_val_class_lineptr and dw_val_class_macptr.
        (add_AT_lbl_offset): Delete.
        (add_AT_lineptr): New.
        (add_AT_macptr): New.
        (AT_lbl): Expect a lineptr or macptr.
        (print_die): Handle dw_val_class_lineptr and dw_val_class_macptr.
        (attr_checksum): Likewise.
        (same_dw_val_p): Likewise.
        (size_of_die): Likewise.
        (value_format): Likewise.
        (output_die): Likewise.
        (dwarf2out_finish): Call add_AT_lineptr and add_AT_macptr instead of
        add_AT_lbl_offset.
        * config/i386/cygming.h (ASM_OUTPUT_DWARF_OFFSET): Add extra parameter.
        * config/i386/i386.c (x86_file_start): Call darwin_file_start.
        * config/darwin-protos.h (darwin_file_start): New.
        (darwin_asm_output_dwarf_offset): New.
        * config/ia64/ia64.h (ASM_OUTPUT_DWARF_OFFSET): Add extra parameter.
        * config/rs6000/rs6000.c (rs6000_darwin_file_start): Call
        darwin_file_start.
        * config/darwin.c (darwin_emit_unwind_label): Don't output label
        if not EH section; simplify.
        (darwin_file_start): New.
        (darwin_asm_output_dwarf_offset): New.
        * config/darwin.h (DEBUG_FRAME_SECTION): In __DWARF segment,
        mark as 'debug'.
        (DEBUG_INFO_SECTION): Likewise.
        (DEBUG_ABBREV_SECTION): Likewise.
        (DEBUG_ARANGES_SECTION): Likewise.
        (DEBUG_MACINFO_SECTION): Likewise.
        (DEBUG_LINE_SECTION): Likewise.
        (DEBUG_LOC_SECTION): Likewise.
        (DEBUG_PUBNAMES_SECTION): Likewise.
        (DEBUG_STR_SECTION): Likewise.
        (DEBUG_RANGES_SECTION): Likewise.
        (FRAME_BEGIN_LABEL): Must start with 'L' in debug section.
        (ASM_OUTPUT_DWARF_OFFSET): New.

2006-03-16  Joseph S. Myers  <joseph@codesourcery.com>

        * config.gcc (tm_defines): Always add to previous value rather
        than replacing it.

2006-03-16  Richard Sandiford  <richard@codesourcery.com>

        * config/mips/predicates.md (splittable_const_int_operand): New,
        split from move_operand.
        (splittable_symbolic_operand): New.
        (move_operand): Add commentary.  Use splittable_const_int_operand.
        Inline mips_atomic_symbolic_constant_p.
        * config/mips/mips.md: Add combine splitters for handling moves
        of splittable_const_int_operands and splittable_symbolic_operands.
        * config/mips/mips-protos.h (mips_atomic_symbolic_constant_p): Delete.
        (mips_split_symbol): Declare.
        (mips_move_integer): Declare.
        * config/mips/mips.c (mips_split_p): Make global.
        (TARGET_MIN_ANCHOR_OFFSET): Override default.
        (TARGET_MAX_ANCHOR_OFFSET): Likewise.
        (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Likewise.
        (TARGET_USE_ANCHORS_FOR_SYMBOL_P): Likewise.
        (mips_offset_within_object_p): Handle block symbols.
        (mips_atomic_symbolic_constant_p): Delete.
        (mips_cannot_force_const_mem): Return false for constants that
        mips_legitimize_move can handle.
        (mips_use_blocks_for_constant_p): New function.
        (mips_split_symbol): Make global.
        (mips_move_integer): Likewise.  Add a temporary register argument.
        (mips_legitimize_const_move): Use splittable_const_int_operand and
        splittable_symbolic_operand.
        (mips_use_anchors_for_symbol_p): New function.
        * config/mips/mips.h: Protect externs with !USED_FOR_TARGET.
        (mips_split_p): Declare.  

2006-03-16  Richard Sandiford  <richard@codesourcery.com>

        * config.gcc (mips64*-*-linux*): Keep existing tm_defines.
        (mips*-*-linux*): Likewise.

2006-03-16  Roger Sayle  <roger@eyesopen.com>
            Daniel Speyer  <dspeyer@wam.umd.edu>

        PR middle-end/18259
        * tree-dump.c (dump_real): New function.
        (dequeue_and_dump) <REAL_CST>: Use it to dump FP constants.
        * Makefile.in (REAL_H): New macro for dependencies on real.h.
        (tree-dump.o): Add $(REAL_H) to the dependencies.

2006-03-16  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/21781
        * real.c (real_from_string): If the mantissa is zero, don't bother
        parsing the exponent as the result should always be zero.

2006-03-16  Andreas Krebbel  <krebbel1@de.ibm.com>

        * simplify-rtx.c (simplify_plus_minus): Simplify within CONST terms.

2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>

        * config/ia64/ia64.c (stops_p): Added explicit initialization.
        (ia64_first_cycle_multipass_dfa_lookahead_guard_spec,
        ia64_h_i_d_extended, ia64_set_sched_flags, ia64_speculate_insn,
        ia64_needs_block_p, ia64_gen_check, ia64_sched_init_global,
        ia64_sched_finish_global): New static functions to implement
        hooks from gcc_target.sched.
        (spec_check_no, max_uid, pending_data_specs): New static variables.
        (ia64_mode_to_int, ia64_gen_spec_insn, ia64_spec_check_p,
        ia64_spec_check_src_p): New static functions.
        (ia64_adjust_cost): Renamed to ia64_adjust_cost_2.
        (TARGET_SCHED_ADJUST_COST): Removed.
        (TARGET_SCHED_ADJUST_COST_2, TARGET_SCHED_INIT_GLOBAL,
        TARGET_SCHED_FINISH_GLOBAL, TARGET_SCHED_H_I_D_EXTENDED,
        TARGET_SCHED_SPECULATE_INSN, TARGET_SCHED_NEEDS_BLOCK_P,
        TARGET_SCHED_GEN_CHECK,
        TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
        TARGET_SCHED_SET_SCHED_FLAGS): New macros.
        (update_set_flags, group_barrier_needed, set_src_needs_barrier):
        Fixed to handle speculation checks.
        (rtx_needs_barrier): Fixed to handle speculative loads and
        their checks.
        (ia64_variable_issue): Added code to count speculative loads and their
        checks.
        (ia64_first_cycle_multipass_dfa_lookahead_guard): Fixed to handle
        speculative loads.
        (enum SPEC_MODES, enum SPEC_GEN_LD_MAP, SPEC_GEN_CHECK_OFFSET):
        New enumerations.
        (SPEC_GEN_EXTEND_OFFSET, SPEC_N, SPEC_GEN_CHECK_MUTATION_OFFSET):
        New constants.
        (ia64_ld_address_bypass_p): Fixed to handle speculative loads.
        (ia64_reorg): Reset stops_p to NULL after it is freed.
        * config/ia64/ia64.md (UNSPEC_LDA, UNSPEC_LDS, UNSPEC_LDSA,
        UNSPEC_LDCCLR, UNSPEC_CHKACLR, UNSPEC_CHKS): New constants.
        (itanium_class): chk_s renamed to chk_s_i.  New constants: chk_s_f,
        chk_a.
        (data_speculative, control_speculative, check_load): New attributes.
        (mov<mode>_advanced, mov<mode>_speculative,
        mov<mode>_speculative_advanced, zero_extend<mode>di2_advanced,
        zero_extend<mode>di2_speculative,
        zero_extend<mode>di2_speculative_advanced): New patterns for
        data and control speculative loads.
        (mov<mode>_clr, zero_extend<mode>di2_clr): New patterns for
        check loads.
        (advanced_load_check_clr_<mode>, speculation_check_<mode>):
        New pattern for data and control speculation checks.
        (MODE, MODE_FOR_EXTEND, output_a, output_s, output_sa, output_c_clr,
        ld_reg_constr, ldc_reg_constr, chk_reg_constr, mem_constr,
        reg_pred_prefix, ld_class, chka_class, chks_class, attr_yes):
        Auxiliary definitions for the patterns.
        * config/ia64/itanium1.md (1_fldc, 1_fldpc, 1_ldc, 1_chk_s_f, 1_chk_a,
        1b_fldc, 1b_fldpc, 1b_ldc, 1b_chk_s_f, 1b_chk_a): New resource
        constraints.
        (1_fld, 1_fldp, 1_ld, 1b_fld, 1b_fldp, 1b_ld): Add a condition
        for speculation.
        (1_chk_s, 1b_chk_s): Renamed to 1_chk_s_i, 1b_chk_s_i.
        * config/ia64/itanium2.md (2_flda, 2_fldc, 2_fldpc, 2_ldc, 2_chk_s_f,
        2_chk_a, 2b_flda, 2b_fldc, 2b_fldpc, 2b_ldc, 2b_chk_s_f, 2b_chk_a):
        New resource constraints.
        (2_fld, 2_fldp, 2_ld, 2b_fld, 2b_fldp, 2b_ld): Add a condition
        for speculation.
        (2_chk_s, 2b_chk_s): Renamed to 2_chk_s_i, 2b_chk_s_i.
        * config/ia64/ia64.opt (msched-br-data-spec, msched-ar-data-spec,
        msched-control-spec, msched-br-in-data-spec, msched-ar-in-data-spec,
        msched-in-control-spec, msched-ldc, msched-control-ldc,
        msched-spec-verbose, msched-prefer-non-data-spec-insns,
        msched-prefer-non-control-spec-insns,
        msched-count-spec-in-critical-path): New flags to tune speculative
        scheduling.
        * doc/invoke.texi (msched-br-data-spec, msched-ar-data-spec,
        msched-control-spec, msched-br-in-data-spec, msched-ar-in-data-spec,
        msched-in-control-spec, msched-ldc, msched-control-ldc,
        msched-spec-verbose, msched-prefer-non-data-spec-insns,
        msched-prefer-non-control-spec-insns,
        msched-count-spec-in-critical-path): Document new flags.

2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>

        * target.h (struct spec_info_def): New opaque declaration.
        (struct gcc_target.sched): New fields: adjust_cost_2, h_i_d_extended,
        speculate_insn, needs_block_p, gen_check,
        first_cycle_multipass_dfa_lookahead_guard_spec, set_sched_flags.
        * target-def.h (TARGET_SCHED_ADJUST_COST_2,
        TARGET_SCHED_H_I_D_EXTENDED, TARGET_SCHED_SPECULATE_INSN,
        TARGET_SCHED_NEEDS_BLOCK_P, TARGET_SCHED_GEN_CHECK,
        TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
        TARGET_SCHED_SET_SCHED_FLAGS): New macros to initialize fields in
        gcc_target.sched.
        (TARGET_SCHED): Use new macros.
        * rtl.h (copy_DEPS_LIST_list): New prototype.
        * sched-int.h (struct sched_info): Change signature of new_ready field,
        adjust all initializations. New fields: add_remove_insn,
        begin_schedule_ready, add_block, advance_target_bb, fix_recovery_cfg,
        region_head_or_leaf_p.
        (struct spec_info_def): New structure declaration.
        (spec_info_t): New typedef.
        (struct haifa_insn_data): New fields: todo_spec, done_spec, check_spec,
        recovery_block, orig_pat.
        (glat_start, glat_end): New variables declaraions.
        (TODO_SPEC, DONE_SPEC, CHECK_SPEC, RECOVERY_BLOCK, ORIG_PAT):
        New access macros.
        (enum SCHED_FLAGS): New constants: SCHED_RGN, SCHED_EBB,
        DETACH_LIFE_INFO, USE_GLAT.
        (enum SPEC_SCHED_FLAGS): New enumeration.
        (NOTE_NOTE_BB_P): New macro.
        (extend_dependency_caches, xrecalloc, unlink_bb_notes, add_block,
        attach_life_info, debug_spec_status, check_reg_live): New functions.
        (get_block_head_tail): Change signature to get_ebb_head_tail, adjust
        all uses in ddg.c, modulo-sched.c, haifa-sched.c, sched-rgn.c,
        sched-ebb.c
        (get_dep_weak, ds_merge): Prototype functions from sched-deps.c .
        * ddg.c (get_block_head_tail): Adjust all uses.
        * modulo-sched.c (get_block_head_tail): Adjust all uses.
        (sms_sched_info): Initialize new fields.
        (contributes_to_priority): Removed.
        * haifa-sched.c (params.h): New include.
        (get_block_head_tail): Adjust all uses.
        (ISSUE_POINTS): New macro.
        (glat_start, glat_end): New global variables.
        (spec_info_var, spec_info, added_recovery_block_p, nr_begin_data,
        nr_be_in_data, nr_begin_control, nr_be_in_control, bb_header,
        old_last_basic_block, before_recovery, current_sched_info_var,
        rgn_n_insns, luid): New static variables.
        (insn_cost1): New function.  Move logic from insn_cost to here.
        (find_insn_reg_weight1): New function.  Move logic from
        find_insn_reg_weight to here.
        (reemit_notes, move_insn, max_issue): Change signature.
        (move_insn1): Removed.
        (extend_h_i_d, extend_ready, extend_global, extend_all, init_h_i_d,
        extend_bb): New static functions to support extension of scheduler's
        data structures.
        (generate_recovery_code, process_insn_depend_be_in_spec,
        begin_speculative_block, add_to_speculative_block,
        init_before_recovery, create_recovery_block, create_check_block_twin,
        fix_recovery_deps): New static functions to support
        generation of recovery code.
        (fix_jump_move, find_fallthru_edge, dump_new_block_header,
        restore_bb_notes, move_block_after_check, move_succs): New static
        functions to support ebb scheduling.
        (init_glat, init_glat1, attach_life_info1, free_glat): New static
        functions to support handling of register live information.
        (associate_line_notes_with_blocks, change_pattern, speculate_insn,
        sched_remove_insn, clear_priorities, calc_priorities, bb_note,
        add_jump_dependencies): New static functions.
        (check_cfg, has_edge_p, check_sched_flags): New static functions for
        consistancy checking.
        (debug_spec_status): New function to call from debugger.
        (priority): Added code to handle speculation checks.
        (rank_for_schedule): Added code to distinguish speculative instructions.
        (schedule_insn): Added code to handle speculation checks.
        (unlink_other_notes, rm_line_notes, restore_line_notes, rm_other_notes):
        Fixed to handle ebbs.
        (move_insn): Added code to handle ebb scheduling.
        (max_issue): Added code to use ISSUE_POINTS of instructions.
        (choose_ready): Added code to choose between speculative and
        non-speculative instructions.
        (schedule_block): Added code to handle ebb scheduling and scheduling of
        speculative instructions.
        (sched_init): Initialize new variables.
        (sched_finish): Free new variables.  Print statistics.
        (try_ready): Added code to handle speculative instructions.
        * lists.c (copy_DEPS_LIST_list): New function.
        * sched-deps.c (extend_dependency_caches): New function.  Move logic
        from create_dependency_caches to here.
        (get_dep_weak, ds_merge): Make global.
        * genattr.c (main): Code to output prototype for
        dfa_clear_single_insn_cache.
        * genautomata.c (DFA_CLEAR_SINGLE_INSN_CACHE_FUNC_NAME): New macros.
        (output_dfa_clean_insn_cache_func): Code to output
        dfa_clear_single_insn_cache function.
        * sched-ebb.c (target_n_insns): Remove.  Adjust all users to use
        n_insns.
        (can_schedule_ready_p, fix_basic_block_boundaries, add_missing_bbs):
        Removed.
        (n_insns, dont_calc_deps, ebb_head, ebb_tail, last_bb):
        New static variables.
        (begin_schedule_ready, add_remove_insn, add_block1, advance_target_bb,
        fix_recovery_cfg, ebb_head_or_leaf_p): Implement hooks from
        struct sched_info.
        (ebb_sched_info): Initialize new fields.
        (get_block_head_tail): Adjust all uses.
        (compute_jump_reg_dependencies): Fixed to use glat_start.
        (schedule_ebb): Code to remove unreachable last block.
        (schedule_ebbs): Added code to update register live information.
        * sched-rgn.c (region_sched_info): Initialize new fields.
        (get_block_head_tail): Adjust all uses.
        (last_was_jump): Removed.  Adjust users.
        (begin_schedule_ready, add_remove_insn, insn_points, extend_regions,
        add_block1, fix_recovery_cfg, advance_target_bb, region_head_or_leaf_p):
        Implement new hooks.
        (check_dead_notes1): New static function.
        (struct region): New fields: dont_calc_deps, has_real_ebb.
        (RGN_DONT_CALC_DEPS, RGN_HAS_REAL_EBB): New access macros.
        (BB_TO_BLOCK): Fixed to handle EBBs.
        (EBB_FIRST_BB, EBB_LAST_BB): New macros.
        (ebb_head): New static variable.
        (debug_regions, contributes_to_priority): Fixed to handle EBBs.
        (find_single_block_regions, find_rgns, find_more_rgns): Initialize
        new fields.
        (compute_dom_prob_ps): New assertion.
        (check_live_1, update_live_1): Fixed to work with glat_start instead of
        global_live_at_start.
        (init_ready_list): New assertions.
        (can_schedule_ready_p): Split update code to begin_schedule_ready.
        (new_ready): Add support for BEGIN_CONTROL speculation.
        (schedule_insns): Fixed code that updates register live information
        to handle EBBs.
        (schedule_region): Fixed to handle EBBs.
        (init_regions): Use extend_regions and check_dead_notes1.
        * params.def (PARAM_MAX_SCHED_INSN_CONFLICT_DELAY,
        PARAM_SCHED_SPEC_PROB_CUTOFF): New parameters.
        * doc/tm.texi (TARGET_SCHED_ADJUST_COST_2, TARGET_SCHED_H_I_D_EXTENDED,
        TARGET_SCHED_SPECULATE_INSN, TARGET_SCHED_NEEDS_BLOCK_P,
        TARGET_SCHED_GEN_CHECK,
        TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
        TARGET_SCHED_SET_SCHED_FLAGS): Document.
        * doc/invoke.texi (max-sched-insn-conflict-delay,
        sched-spec-prob-cutoff): Document.

2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>

        * sched-int.h (struct haifa_insn_data): New fields: resolved_deps,
        inter_tick, queue_index.
        (struct sched_info): Change signature of init_ready_list field.
        Adjust all initializations.
        (RESOLVED_DEPS): New access macro.
        (ready_add): Remove prototype.
        (try_ready): Add prototype.
        * sched-rgn.c (init_ready_list): Use try_ready.
        (schedule_region): Initialize
        current_sched_info->{sched_max_insns_priority, queue_must_finish_empty}.
        * sched-ebb.c (new_ready): Remove.  Adjust ebb_sched_info.
        (init_ready_list): Use try_ready.
        (schedule_ebb): Initialize current_sched_info->sched_max_insns_priority.
        * lists.c (remove_list_elem): Remove `static'.
        (remove_free_INSN_LIST_elem): New function.
        * rtl.h (remove_list_elem, remove_free_INSN_LIST_elem): Add prototypes.
        * haifa-sched.c (INTER_TICK, QUEUE_INDEX): New macros.
        (INVALID_TICK, MIN_TICK, QUEUE_SCHEDULED, QUEUE_NOWHERE, QUEUE_READY):
        New constants.
        (readyp): New variable.
        (queue_remove, ready_remove_insn, fix_inter_tick, fix_tick_ready,
        change_queue_index, resolve_dep): New static functions.
        (try_ready): New function.  Adjust callers in sched-rgn.c and
        sched-ebb.c to use it instead of ready_add.
        (clock_var): Move at the begining of file.
        (rank_for_schedule): Fix typo.
        (queue_insn): Add assertion.  Handle QUEUE_INDEX.
        (ready_lastpos): Enforce assertion.
        (ready_add): Make it static.  Handle QUEUE_INDEX.  Add new argument,
        update all callers.
        (ready_remove_first, ready_remove): Handle QUEUE_INDEX.
        (schedule_insn): Rewrite to use try_ready and resolve_dep.
        (queue_to_ready): Use free_INSN_LIST_list.
        (early_queue_to_ready): Fix typo.
        (schedule_block): Init readyp.  Move init_ready_list call after the
        initialization of clock_var.  Fix error in rejecting insn by
        targetm.sched.dfa_new_cycle.  Add call to fix_inter_tick.  Remove code
        that previously corrected INSN_TICKs.  Add code for handling
        QUEUE_INDEX.
        (set_priorities): Fix typo.
        (sched_init): Initialize INSN_TICK, INTER_TICK and QUEUE_INDEX.
        Clarify comment and code that keeps current_sched_info->next_tail
        non-null.

2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>

        * sched-rgn.c (extend_rgns): New static function.
        (find_rgns): Use it.
        (gather_region_statistics, print_region_statistics): New static
        functions.
        * params.def (PARAM_MAX_SCHED_EXTEND_REGIONS_ITERS): New parameter.
        * doc/invoke.texi (max-sched-extend-regions-iters): Document.

2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
            Andrey Belevantsev <abel@ispras.ru>

        * ddg.c (build_intra_loop_deps): Adjust add_forward_dependence call.
        * lists.c (unused_deps_list): New variable.
        (free_list): Add assertions to verify the proper distinguishing 
        between INSN_LISTs and DEPS_LISTs.
        (find_list_elem, remove_list_elem, remove_list_node): New static
        functions.
        (alloc_DEPS_LIST, free_DEPS_LIST, free_DEPS_LIST_node,
        remove_free_INSN_LIST_elem, remove_free_DEPS_LIST_elem,
        remove_free_INSN_LIST_node, remove_free_DEPS_LIST_node): New functions.
        (alloc_INSN_LIST): Assert that the list we're working on is indeed
        an INSN_LIST.
        (free_INSN_LIST_node): Likewise.
        * modulo-sched.c (current_sched_info): Initialize flags field.
        * reg-notes.def: Exchange DEP_ANTI and DEP_OUTPUT.
        * rtl.def (DEPS_LIST): Define.
        * rtl.h: Declare new functions from lists.c.
        * sched-deps.c (spec_dependency_cache): New static variable.
        (maybe_add_or_update_back_dep_1, add_back_dep): New static functions.
        (add_dependence): Change return type to void.  Move the logic to ...
        (add_or_update_back_dep_1): ... here.  Handle speculative dependencies.
        (delete_all_dependences): Add comment about forward_dependency_cache.
        Handle spec_dependency_cache.  Handle DEPS_LISTs.
        (fixup_sched_groups): Clarify the change of priority of output
        and anti dependencies.
        (sched_analyze_2): Adjust add_dependence calls to create data
        speculative dependence.
        (add_forward_dependence): Renamed to add_forw_dep, change prototype.
        Adjust all callers.  Handle DEPS_LISTS.
        (compute_forward_dependences): Use add_forw_dep.  Sort LOG_LINKs in
        presence of speculation.
        (init_dependency_caches, free_dependency_caches):
        Handle spec_dependency_cache.
        (adjust_add_sorted_back_dep, adjust_back_add_forw_dep, delete_forw_dep,
        estimate_dep_weak, get_dep_weak, ds_merge, check_dep_status):
        New static functions.
        (add_or_update_back_dep, add_or_update_back_forw_dep,
        add_back_forw_dep, delete_back_forw_dep): New functions.
        * sched-int.h (ds_t, dw_t): New typedefs.
        (struct sched_info): Add new field flags.
        (struct haifa_insn_data): Add new bitfield has_internal_dep.
        Prototype new sched-deps.c functions.
        (HAS_INTERNAL_DEP, DEP_STATUS): New access macros.
        (BITS_PER_DEP_STATUS, BITS_PER_DEP_WEAK, DEP_WEAK_MASK, MAX_DEP_WEAK,
        MIN_DEP_WEAK, NO_DEP_WEAK, UNCERTAIN_DEP_WEAK, BEGIN_DATA, BE_IN_DATA,
        BEGIN_CONTROL, BE_IN_CONTROL, BEGIN_SPEC, DATA_SPEC, CONTROL_SPEC,
        SPECULATIVE, BE_IN_SPEC, FIRST_SPEC_TYPE, LAST_SPEC_TYPE,
        SPEC_TYPE_SHIFT, DEP_TRUE, DEP_OUTPUT, DEP_ANTI, DEP_TYPES, HARD_DEP):
        New constants.
        (enum SPEC_TYPES_OFFSETS, enum DEPS_ADJUST_RESULT, enum SCHED_FLAGS):
        New enums.
        * sched-rgn.c (current_sched_info): Initialize flags field.
        (schedule_insns): Initialize current_sched_info before the sched_init
        call.
        * sched-ebb.c (current_sched_info): Initialize flags field.
        (add_deps_for_risky_insns): Use control_flow_insn_p instead of JUMP_P.
        Call add_or_update_back_dep instead of add_dependence.
        Create control speculative dependencies.
        (schedule_insns): Initialize current_sched_info before the sched_init
        call.

2006-03-16  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/linux-unwind.h (shmedia_fallback_frame_state): Set
        fs->signal_frame.
        (sh_fallback_frame_state): Likewise.

2006-03-15  Geoffrey Keating  <geoffk@apple.com>

        * config.gcc (*-*-darwin*): Don't build crt2.o for all Darwin ports.
        Do switch on default_use_cxa_atexit.
        (powerpc*-*-darwin*): Build crt2.o on powerpc.
        * config/darwin-crt3.o: New.
        * config/darwin.h (LINK_SPEC): If -shared-libgcc, make linker default
        to 10.3.  Pass '-multiply_defined suppress' if crt3.o is in use.
        (STARTFILE_SPEC): Add crt3.o when -shared-libgcc and appropriate
        OS version.
        * config/rs6000/t-darwin: Move crt2.o building to here.
        * config/rs6000/darwin.h (C_COMMON_OVERRIDE_OPTIONS): Update
        Mac OS version for using __cxa_get_exception_ptr.  Don't test versions
        of __cxa_atexit.

2006-03-15  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

        * config/vax/vax.c (nonindexed_address_p): Change logical negation
        from '! xxx' to '!xxx' for coding-style conformance.
        * config/vax/vax.h (PCC_BITFIELD_TYPE_MATTERS): Likewise.
        (EXTRA_CONSTRAINT): Likewise.
        * config/vax/vax.md (four unnamed insns): Likewise.
        
2006-03-15  Paul Brook  <paul@codesourcery.com>

        * config/arm/arm.c (minipool_pad): New.
        (add_minipool_forward_ref): Include pool alignment padding in address
        calculation.
        (push_minipool_fix): Set minipool_pad.
        (minipool_pad): Ditto.

2006-03-15  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

        * config/vax/vax.c (split_quadword_operands): Use MEM_P()
        instead of GET_CODE() == MEM and REG_P() instead of
        GET_CODE() == REG.
        (print_operand_address): Likewise.
        (vax_address_cost): Likewise.
        (vax_rtx_costs): Likewise.
        (vax_notice_update_cc): Likewise.
        (vax_output_int_add): Likewise.
        (INDEX_REGISTER_P): Likewise.
        (BASE_REGISTER_P): Likewise.
        (nonindexed_address_p): Likewise.
        (vax_mode_dependent_address_p): Likewise.
        * config/vax/vax.h (EXTRA_CONSTRAINT): Likewise.
        (PRINT_OPERAND): Likewise.
        * config/vax/vax.md (ashlsi3): Likewise.
        (ashlsi3): Likewise.
        (some more unnamed insns): Likewise.

2006-03-15  Kazu Hirata  <kazu@codesourcery.com>

        * tree-ssa-dce.c (EXECUTE_IF_CONTROL_DEPENDENT): Make it an
        iterator-style macro.
        (mark_control_dependent_edges_necessary): Update the use of
        EXECUTE_IF_CONTROL_DEPENDENT.

2006-03-15  J"orn Rennecke <joern.rennecke@st.com>

        * config/sh/predicates.md (cache_address_operand): Special.
        (ua_address_operand): Likewise.

2006-03-15  Zdenek Dvorak <dvorakz@suse.cz>

        * haifa-sched.c (unlink_other_notes, reemit_notes): Do not handle
        loop notes.
        * sched-deps.c (sched_analyze_insn, sched_analyze): Ditto.

2006-03-15  Andreas Schwab  <schwab@suse.de>

        * gensupport.c (identify_predicable_attribute): Don't free p_false
        when it is still in use.

2006-03-15  Eric Botcazou  <ebotcazou@libertysurf.fr>

        * config.gcc (default with_cpu setting) <sparc*-*-*>: Do not modify
        the default setting here.

2006-03-14  Steven Bosscher  <stevenb.gcc@gmail.com>

        * tree-pass.h (pass_cfg): Remove.
        * alias.c (rest_of_handle_cfg, pass_cfg): Remove.
        * passes.c (pass_cfg): Don't run it.

2006-03-14  Kazu Hirata  <kazu@codesourcery.com>

        * Makefile.in (reg-stack.o): Don't depend on gt-reg-stack.h.
        * reg-stack.c (stack_regs_mentioned_data): Change the type to
        VEC(char,heap) *.
        (stack_regs_mentioned): Update the uses of
        stack_regs_mentioned_data.  Don't access the array beyond its
        end.
        (reg_to_stack): Update the uses of stack_regs_mentioned_data.
        Don't include gt-reg-stack.h.

        * config/bfin/bfin.h (UNALIGNED_WORD_ASM_OP): Remove.
        * system.h (UNALIGNED_WORD_ASM_OP): Poison.

        * combine.c (UWIDE_SHIFT_LEFT_BY_BITS_PER_WORD): Remove.

        PR middle-end/26684
        * reg-stack.c (stack_regs_mentioned_data): Put it undef #ifdef
        STACK_REGS.

2006-03-14  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        * pa/pa32-linux.h (CRT_CALL_STATIC_FUNCTION): Fix typo.

2006-03-14  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/26672
        * tree-ssa-propagate.c (set_rhs): Don't walk DEFs if not in
        SSA form.

2006-03-14  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/26667
        * ipa-inline.c (cgraph_check_inline_limits): Walk the correct
        node for the callees.  Always allow inlining if it will shrink
        the function size.

2006-03-14  Richard Guenther  <rguenther@suse.de>

        PR middle-end/26659
        * builtins.c (get_pointer_alignment): Prefer alignment
        information from decls over that from types.

2006-03-14  Andrew Pinski  <pinskia@physics.uc.edu>

        PR target/26657
        * config/darwin.h (LINK_COMMAND_SPEC): Handle -fopenmp.

2006-03-14  Joseph S. Myers  <joseph@codesourcery.com>

        * config/rs6000/rs6000.opt (mdlmzb): New option.
        (msched-prolog, msched-epilog): Use Var not Mask.
        * doc/invoke.texi (-mdlmzb): Document.
        * config/rs6000/rs6000.c (TARGET_DEFAULT_TARGET_FLAGS): Remove
        MASK_SCHED_PROLOG.
        (rs6000_override_options): Enable -mdlmzb for 405 and 440.
        * config/rs6000/rs6000.md: Add dlmzb support for 405 and 440.

2006-03-13  Uttam Pawar  <uttamp@us.ibm.com>

        PR rtl-optimization/25739
        * bt-load.c (augment_live_range): Free tos pointer.

        * gensupport.c (identify_predicable_attribute): Free
        p_false pointer.
        * gcov.c (create_file_names): Free name pointer.

2006-03-13  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/26557
        * stmt.c (emit_case_nodes): Handle the case where the index is a
        CONST_INT, where the comparison mode is specified by the index type.

2006-03-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        * pa/pa32-linux.h (CRT_CALL_STATIC_FUNCTION): Define when CRTSTUFFS_O
        is defined.

2006-03-13  Richard Sandiford  <richard@codesourcery.com>

        * config/mips/mips.md (*branch_fp): Use %Z2 for the condition.
        (*branch_fp_inverted): Likewise.

2006-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/25989
        * omp-low.c (expand_omp_for_generic): Mark istart0
        and iend0 as addressable.

2006-03-13  Jie Zhang  <jie.zhang@analog.com>

        * config/bfin/uclinux.h: Define _GNU_SOURCE in CPLUSPLUS_CPP_SPEC.

2006-03-13  Jeff Law  <law@redhat.com>

        * tree-vrp.c (stmt_interesting_for_vrp): Some statements with
        virtual operands are interesting.
        (vrp_visit_stmt): Corresponding changes.

2006-03-13  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/lib1funcs.asm (___umodsi3): Use stack to save contents
        of RETS.
        * config/bfin/bfin.h (TARGET_CPU_CPP_BUILTINS): If
        TARGET_ID_SHARED_LIBRARY, define __ID_SHARED_LIB__.
        * config/bfin/crti.S: Use it instead of __PIC__.
        * config/bfin/crtn.S: Likewise.

        * config/bfin/bfin.md (call_value_symbol, sibcall_value_symbol,
        call_symbol, sibcall_symbol): Disallow if TARGET_ID_SHARED_LIBRARY,
        not if flag_pic.
        Lose 'G' modifier for call operand.
        * config/bfin/bfin.c (print_operand) <case SYMBOL_REF>: Don't
        recognize 'G' modifier.

2006-03-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/18859
        * gimplify.c (gimplify_switch_expr): Discard empty ranges.
        * stmt.c (expand_case): Likewise.

2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>

        PR rtl-optimization/26254
        * loop-invariant.c (seq_insns_valid_p): New function.
        (move_invariant_reg): Only emit new code if it is valid.

2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>

        * cfgrtl.c (last_loop_beg_note, back_edge_of_syntactic_loop_p):
        Removed.
        (force_nonfallthru_and_redirect): Do not use last_loop_beg_note.
        (rtl_split_edge): Do not use back_edge_of_syntactic_loop_p.
        (commit_one_edge_insertion): Do not look for loop notes.

2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>

        * jump.c (follow_jumps): Do not check for loop notes.  Move check for
        flag_test_coverage out of loop.

2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>

        * final.c (shorten_branches): Remove outdated comment, and turn
        the if branch that guards it to continue.

2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>

        * cfgloop.c (flow_loop_dump): Do not dump loop->invalid field.
        * cfgloop.h (struct loop): Remove unused fields.

2006-03-13  Kazu Hirata  <kazu@codesourcery.com>

        * doc/invoke.texi (-fdump-rtl-loop): Remove.
        (-dL, -fdump-rtl-loop2): Update the dump file names 

        * doc/invoke.texi: Update dump file names.

2006-03-12  Steven Bosscher  <stevenb.gcc@gmail.com>

        * predict.c (estimate_probability): Remove.
        * profile.c (rest_of_handle_branch_prob, pass_branch_prob): Remove.
        * basic-block.h (estimate_probability): Remove prototype.
        * passes.c (finish_optimization_passes): Dump branch prediction or
        profiling heuristics to the .profile tree dump.
        (init_optimization_passes): Unqueue pass_branch_prob.

        * doc/invoke.texi (-fdump-rtl-bp): Remove.

2006-03-11  Steven Bosscher  <stevenb.gcc@gmail.com>

        * rtl.def (LABEL_REF): Remove the field for LABEL_NEXTREF.
        * rtl.h (LABEL_NEXTREF): Remove field accessor.

2006-03-11  Eric Botcazou  <ebotcazou@adacore.com>

        * function.h (frame_offset_overflow): Declare.
        * function.c (frame_offset_overflow): New function.
        (assign_stack_local_1): Call it to detect that the offset overflows.
        * cfgexpand.c (alloc_stack_frame_space): Likewise.

2006-03-11  Steven Bosscher  <stevenb.gcc@gmail.com>

        * config/sh/sh.c: Include alloc-pool.h.
        (label_ref_list_pool): New alloc pool.
        (label_ref_list_t): New type for lists of labels.
        (struct pool_node): Make wend a label_ref_list_t.
        (add_constant): Use the new type, eradicate LABEL_NEXTREF
        references.
        (dump_table): Likewise.
        (sh_reorg): Set up the alloc pool before using add_constant and
        dump_table, and destroy it when finishing.

2006-03-11  Richard Sandiford  <richard@codesourcery.com>

        * config/mips/mips.c: Remove redundant comment.

2006-03-10  Jason Merrill  <jason@redhat.com>

        PR c/26004
        * gimplify.c (gimplify_modify_expr_rhs): Don't do return slot opt if 
        the target was declared 'register'.

2006-03-10  Adam Nemet  <anemet@caviumnetworks.com>

        * genpreds.c (write_insn_constraint_len): Change definition of
        insn_constraint_len to return size_t to match the declaration.

2006-03-10  DJ Delorie  <dj@redhat.com>

        * config/m32c/m32c.c (m32c_const_ok_for_constraint_p): Bit numbers
        start at zero.
        (m32c_expand_insv): Fix test for an AND mask.

2006-03-10  Richard Guenther  <rguenther@suse.de>

        PR middle-end/26565
        * builtins.c (get_pointer_alignment): Handle component
        references for field alignment.

2006-03-10  J"orn Rennecke <joern.rennecke@st.com>

        * config.gcc (sh*-superh-elf, sh*elf (newlib)): Use newlib.h
        when building with libgloss.
        (sh*elf): Implement --without-fp option.
        (sh64-superh-linux*): Don't multilib. 

2006-03-10  J"orn Rennecke <joern.rennecke@st.com>

        * struct-equiv.c (rtx_equiv_p): Fix POST_MODIFY case.

2006-03-09  Andrew Pinski  <pinskia@physics.uc.edu>

        * tree-ssa-phiopt.c (tree_ssa_phiopt): Add cfgchanged variable.
        Set it when one of the replacement functions returned true.
        Return TODO_cleanup_cfg if cfgchanged is true.
        (pass_phiopt) <todo_flags_finish>: Remove TODO_cleanup_cfg.

2006-03-09  Adam Nemet  <anemet@caviumnetworks.com>

        * combine.c (simplify_shift_const_1): Use gen_lowpart_or_truncate
        instead of gen_lowpart.

2006-03-09  Richard Sandiford  <richard@codesourcery.com>

        * config/mips/mips-protos.h (mips_output_conditional_branch): Change
        interface.
        (mips_output_order_conditional_branch): Declare.
        * config/mips/mips.h (MIPS_BRANCH): New macro.
        * config/mips/mips.c (gen_conditional_branch): Use VOIDmode
        for the comparison.  Use gen_condjump.
        (mips_output_conditional_branch): Rework interface to take the
        asm templates for a direct branch and the inverse of a direct branch.
        (mips_output_order_conditional_branch): New function.
        (mips_builtin_branch_and_move): New function.
        (mips_expand_builtin_compare): Use it.  Use VOIDmode for the
        branch condition.  Use gen_single_cc as the condition for
        __builtin_mips_upper_* or __builtin_mips_lower_*.
        (mips_expand_builtin_bposge): Use mips_builtin_branch_and_move.
        Use VOIDmode for the branch condition.
        * config/mips/predicates.md (order_operator): New predicate.
        * config/mips/mips.md (UNSPEC_SINGLE_CC): New constant.
        (branch_fp): Rename to...
        (*branch_fp): ...this.  Remove mode from comparison operator.
        Use new mips_output_conditional_branch interface.
        (branch_fp_inverted): Rename to...
        (*branch_fp_inverted): ...this and update as for *branch_fp.
        (*branch_zero<mode>): Rename to...
        (*branch_order<mode>): ...this.  Remove mode from comparison operator.
        Use mips_output_order_conditional_branch.  Only accept ordered
        comparisons.  
        (*branch_zero<mode>_inverted): Rename to...
        (*branch_order<mode>_inverted): ...this and update as for
        *branch_order<mode>.
        (*branch_equality<mode>): Accept zero as the second operand to
        the equality operator.  Use the new mips_output_conditional_branch
        interface.
        (*branch_equality<mode>_inverted): Likewise.
        (condjump): New expander.
        * config/mips/mips-dsp.md (mips_bposge): Remove mode from comparison
        operator.
        * config/mips/mips-ps-3d.md (bc1any4t, bc1any4f): Likewise.
        (bc1any2t, bc1any2f): Likewise.
        (single_cc): New expander.
        (*branch_upper_lower, *branch_upper_lower_inverted): New patterns.

2006-03-09  Richard Sandiford  <richard@codesourcery.com>

        * doc/md.texi: Update documentation of MIPS constraints.
        * config/mips/constraints.md: New file.
        * config/mips/mips.md: Include it.
        * config/mips/mips.c (mips_char_to_class): Delete.
        (override_options): Don't initialize mips_char_to_class.
        * config/mips/mips.h (mips_char_to_class): Delete.
        (REG_CLASS_FROM_LETTER): Delete.
        (CONST_OK_FOR_LETTER_P): Delete.
        (CONST_DOUBLE_OK_FOR_LETTER_P): Delete.
        (EXTRA_CONSTRAINT_Y): Delete.
        (EXTRA_CONSTRAINT_STR): Delete.
        (CONSTRAINT_LEN): Delete.
        (EXTRA_MEMORY_CONSTRAINT): Delete.

2006-03-09  Diego Novillo  <dnovillo@redhat.com>

        * tree-cfg.c (move_block_to_fn): Remove the statements from the
        original fn's eh regions.

2006-03-09  Eric Botcazou  <ebotcazou@adacore.com>

        * fold-const.c (build_range_check): Make sure to use a valid type to
        apply the "(c>=low) && (c<=high) into (c-low>=0) && (c-low<=high-low)"
        transformation.

        (range_predecessor): New static function.
        (range_successor): Likewise.
        (merge_ranges): Use them to compute predecessors and successors of
        range bounds.

2006-03-09  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/26561
        * fold-const.c (fold_div_compare): When optimizing X/C1 op C2 as
        X op C3, consider whether C3 overflows towards +Inf or -Inf.

2006-03-08  DJ Delorie  <dj@redhat.com>

        * config/m32c/addsub.md (addqi3): Disparage a0/a1.
        (addpsi3): Expand to include memory operands.  Remove
        reload-specific splits.
        * config/m32c/bitops.md (bset_qi, bset_hi, bclr_qi): New.
        (andqi3_16, andhi3_16, iorqi3_16, iorhi3_16): New.
        (andqi3_24, andhi3_24, iorqi3_24, iorhi3_24): New.
        (andqi3, andhi3, iorqi3, iorhi3): Convert to expanders.
        (shift1_qi, shift1_hi, insv): New.
        * config/m32c/cond.md (cbranchqi4, cbranchhi4): Remove.
        (cbranch<mode>4, stzx_16, stzx_24_<mode>, stzx_reversed,
        cmp<mode>, b<code>, s<code>, s<code>_24, movqicc, movhicc,
        cond_to_int): New.
        * config/m32c/m32c-protos.h: Update as needed.
        * config/m32c/m32c.c (m32c_reg_class_from_constraint): Don't
        default the Rcr, Rcl, Raw, and Ral constraints.  Add Ra0 and Ra1.
        Fail for unrecognized R* constraints.
        (m32c_cannot_change_mode_class): Be more picky about pseudos.
        (m32c_const_ok_for_constraint_p): Add Imb, Imw, and I00.
        (m32c_extra_constraint_p2): Allow (mem (plus (plus fb int) int)).
        Add Sp constraint.
        (m32c_init_libfuncs): New.
        (m32c_legitimate_address_p): Add debug wrapper.
        (m32c_rtx_costs): New.
        (m32c_address_cost): New.
        (conversions): Add 'B' prefix.
        (m32c_print_operand): 'h' and 'H' pick lower and upper halves of
        operands, or word regnames for QI operands.  'B' prints bit
        position.
        (m32c_expand_setmemhi): New.
        (m32c_expand_movmemhi): New.
        (m32c_expand_movstr): New.
        (m32c_expand_cmpstr): New.
        (m32c_prepare_shift): Shift counts are limited to 16 bits at a time.
        (m32c_expand_neg_mulpsi3): Handle non-ints.
        (m32c_cmp_flg_0): New.
        (m32c_expand_movcc): New.
        (m32c_expand_insv): New.
        (m32c_scc_pattern): New.
        * config/m32c/m32c.h (reg classes): Add AO_REGS and A1_REGS.  Take
        a0/a1 out of SIregs.
        (STORE_FLAG_VALUE): New.
        * config/m32c/m32c.md: Add unspecs for string moves.  Define various mode and
        code macros.
        (no_insn): New.
        * config/m32c/mov.md: Make constraints more liberal.
        (zero_extendqihi2): Optimize r0/r1 case.
        * config/m32c/muldiv.md (mulpsi3): Check for intvals.
        * config/m32c/predicates.md (m32c_any_operand): New.
        (m32c_nonimmediate_operand): New.
        (m32c_hl_operand): New.
        (m32c_r3_operand): New.
        (ap_operand): New.
        (ma_operand): New.
        (memsym_operand): New.
        (memimmed_operand): New.
        (a_qi_operand): New.
        (m32c_eqne_operator): New.
        (m32c_1bit8_operand): New.
        (m32c_1bit16_operand): New.
        (m32c_1mask8_operand): New.
        (m32c_1mask16_operand): New.
        * config/m32c/blkmov.md: New file.
        * config/m32c/t-m32c (MD_FILES): Add blkmov.

2006-03-08  Andreas Tobler  <a.tobler@schweiz.ch>

        * dwarf2out.c (expand_builtin_dwarf_sp_column): Make dwarf_regnum
        unsigned to fix signed/unsigned comparison issue in
        DWARF2_FRAME_REG_OUT.
        (expand_builtin_init_dwarf_reg_sizes): Make i unsigned to fix signed/
        unsigned comparison issue in DWARF2_FRAME_REG_OUT.

        * tree-ssa-operands.c (finalize_ssa_def_ops): Move the declaration
        of ptr into the ENABLE_CHECKING section.

2006-03-08  Jeff Law  <law@redhat.com>

        * tree-vrp.c (infer_value_range): Only count pointer uses
        and dereferences if -fdelete-null-pointer-checks is enabled.

        * tree-vrp.c (find_assert_locations): Infer value ranges for
        single use pointers, but do not create ASSERT_EXPRs for them.
        When a non-null range is inferred for a pointer, backwards
        propagate that range to other equivalent pointers through the
        use-def chain.

2006-03-08  Paolo Bonzini  <bonzini@gnu.org>

        PR bootstrap/26500
        * Makefile.in (dvi, html, install-info): Invoke the corresponding
        language hook targets.
        * ada/Make-lang.in, cp/Make-lang.in, objc/Make-lang.in,
        objcp/Make-lang.in: Create stub rules for dvi, html, install-info
        if language hook targets were missing.

2006-03-07  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-ssa-opfinalize.h: Removed.
        * Makefile.in (tree-ssa-operands.o): Remove tree-ssa-opfinalize.h
        dependency.
        * tree-ssa-operands.c: Do not include tree-ssa-opfinalize.h.
        (ALLOC_OPTYPE, APPEND_OP_AFTER, MOVE_HEAD_AFTER, MOVE_HEAD_TO_FREELIST,
        INITIALIZE_USE, add_def_op, add_use_op, add_vuse_op, add_maydef_op,
        add_mustdef_op, finalize_ssa_def_ops, finalize_ssa_use_ops,
        finalize_ssa_v_may_def_ops, finalize_ssa_vuse_ops,
        finalize_ssa_v_must_def_ops): New.

2006-03-07  Kenneth Zadeck <zadeck@naturalbridge.com>

        * df-scan.c: (df_bb_refs_record): Fix obvious typo with wrong
        block as parameter.

2006-03-07  Geoffrey Keating  <geoffk@apple.com>

        * varasm.c (assemble_end_function): Say that 'fnname' is unused.

        * config/i386/i386.c (ix86_delegitimize_address): Handle Darwin
        addresses with offsets; reorganize.

        * dwarf2out.c (DWARF2_FRAME_REG_OUT): Move up in file.
        (expand_builtin_dwarf_sp_column): Call DWARF2_FRAME_REG_OUT.
        (expand_builtin_init_dwarf_reg_sizes): Likewise.

2006-03-08  David Billinghurst <David.Billinghurst@riotinto.com>

        PR target/26588
        * config/i386/cygwin.h (GOMP_SELF_SPECS): Define.

2006-03-08  Ben Elliston  <bje@au.ibm.com>

        * config/fp-bit.h (CMPtype): Typedef to a word mode integer.

2006-03-07  Aldy Hernandez  <aldyh@redhat.com>

        PR gomp/26238
        * doc/passes.texi (Tree-SSA passes): Document omp lowering and
        expansion.

2006-03-07  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/26587
        * tree-ssa-structalias.c (handle_ptr_arith): Handle MINUS_EXPR.

2006-03-07  Richard Sandiford  <richard@codesourcery.com>

        * varasm.c (assemble_variable): Fix setting of DECL_IN_TEXT_SECTION.

2006-03-07  Richard Sandiford  <richard@codesourcery.com>

        * hooks.c (hook_bool_mode_rtx_true): New function.
        * hooks.h (hook_bool_mode_rtx_true): Declare.
        * toplev.c (compile_file): Call output_shared_constant_pool.
        * varasm.c (shared_constant_pool): New variable.
        (assemble_start_function, assemble_end_function): Remove arguments
        from call to output_constant_pool.
        (create_constant_pool): New function, split out from...
        (init_varasm_status): ...here.
        (force_const_mem): Choose between the shared and per-function constant
        pools.  Set current_function_uses_const_pool when reusing old entries
        as well as when creating new ones.
        (mark_constant): Ignore data argument.
        (mark_constants): Remove pool argument.
        (mark_constant_pool): Likewise.  Use current_function_uses_const_pool
        to decide whether the function uses a constant pool.
        (output_constant_pool_contents): New function, split out from...
        (output_constant_pool): ...here.
        (output_shared_constant_pool): New function.
        (init_varasm_once): Initialize shared_constant_pool.
        * output.h (output_constant_pool): Delete.
        (output_shared_constant_pool): Declare.
        * config/s390/s390-protos.h (s390_output_constant_pool): Delete.
        * config/i386/i386.c (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Override.

2006-03-06  Nick Clifton  <nickc@redhat.com>

        * config/m32r/m32r.h (OPTIMIZATION_OPTIONS): Remove reference to
        flag_strength_reduce.

2006-03-06  Ben Elliston  <bje@au.ibm.com>

        * config.gcc: Add t-dfprules to $tmake_file for i*86-*-linux* and
        x86_64-*-linux* configurations.

        * config/dfp-bit.h (CMPtype): Typedef to a word mode integer.
        (LIBGCC2_WORDS_BIG_ENDIAN): Define.

2006-03-05  Kazu Hirata  <kazu@codesourcery.com>

        * tree-ssa-threadupdate.c (rediscover_loops_after_threading):
        Remove.
        * basic-block.h: Remove the extern for
        rediscover_loops_after_threading.

        * cfgloop.c (cancel_loop): Make it static.
        * cfgloop.h: Remove the prototype for cancel_loop.

        * flow.c (recompute_reg_usage): Make it static.
        * rtl.h: Remove the prototype for recompute_reg_usage.

        * function.c (use_return_register): Make it static.
        * function.h: Remove the prototype.

2006-03-05  Kazu Hirata  <kazu@codesourcery.com>

        * recog.c (volatile_mem_p, validate_change_maybe_volatile):
        Remove.
        * recog.h: Remove the prototype for
        validate_change_maybe_volatile.

2006-03-05  Kazu Hirata  <kazu@codesourcery.com>

        * rtlanal.c (replace_reg): Remove.
        * rtl.h: Remove the prototype for replace_reg.

2006-03-05  Kazu Hirata  <kazu@codesourcery.com>

        * regclass.c (reg_scan_update): Remove.
        (reg_scan_mark_refs): Remove the last argument.
        * rtl.h: Remove the prototype for reg_scan_update.

2006-03-04  Kazu Hirata  <kazu@codesourcery.com>

        * builtins.c, c-pragma.h, c-typeck.c, cgraph.c, cgraphunit.c,
        combine.c, common.opt, config/dfp-bit.c, config/i386/i386.c,
        config/m68k/m68k.c, config/m68k/m68k.md, config/mt/mt.c,
        config/mt/mt.h, config/s390/s390.md, df-core.c, df-problems.c,
        df-scan.c, df.h, diagnostic.c, expr.c, function.h, gimplify.c,
        loop-invariant.c, omp-low.c, opts.c, passes.c,
        rtl-factoring.c, rtlanal.c, struct-equiv.c, tree-cfgcleanup.c,
        tree-ssa-loop-niter.c, tree-ssa-loop-prefetch.c,
        tree-ssa-structalias.c, tree-ssa-threadedge.c,
        tree-ssa-threadupdate.c, tree-vect-patterns.c,
        tree-vect-transform.c, tree-vectorizer.h, tree-vrp.c,
        unwind-dw2.c: Fix comment typos.  Follow spelling conventions.

2006-03-04  Kazu Hirata  <kazu@codesourcery.com>

        * dwarf2out.c (dwarf2out_add_library_unit_info): Remove.
        * dwarf2out.h: Remove the prototype for
        dwarf2out_add_library_unit_info.

2006-03-04  Kazu Hirata  <kazu@codesourcery.com>

        * tree.c (add_var_to_bind_expr): Remove.
        * tree.h: Remove the prototype for add_var_to_bind_expr.

2006-03-04  Kazu Hirata  <kazu@codesourcery.com>

        * regclass.c (n_non_fixed_regs): Remove.
        (init_reg_sets_1, globalize_reg): Remove all uses of
        n_non_fixed_regs.
        * hard-reg-set.h: Remove the extern for n_non_fixed_regs.

2006-03-04  Kazu Hirata  <kazu@codesourcery.com>

        * rtlanal.c (insns_safe_to_move_p): Remove.
        * rtl.h: Remove the prototype for insns_safe_to_move_p.

2006-03-04  Kazu Hirata  <kazu@codesourcery.com>

        * expmed.c (expand_mult_add): Remove.
        * expr.h: Remove the prototype for expand_mult_add.

2006-03-04  Jakub Jelinek  <jakub@redhat.com>

        * unwind-dw2.h (_Unwind_FrameState): Add REG_SAVED_VAL_OFFSET
        and REG_SAVED_VAL_EXP constants.
        * unwind-dw2.c (struct _Unwind_Context): Add by_value array.
        (_Unwind_GetGR, _Unwind_SetGR, _Unwind_GetGRPtr, _Unwind_SetGRPtr):
        Handle regs stored by value.
        (_Unwind_SetGRValue, _Unwind_GRByValue): New functions.
        (execute_cfa_program): Handle DW_CFA_val_offset,
        DW_CFA_val_offset_sf and DW_CFA_val_expression.
        (uw_update_context_1): Handle REG_SAVED_REG with regs stored by
        value specially.  Handle REG_SAVED_VAL_OFFSET and REG_SAVED_VAL_EXP.
        (uw_install_context_1): Handle target regs stored by value.

2006-03-03  Daniel Berlin  <dberlin@dberlin.org>

        * tree-sra.c (tree_sra): Return todoflags;
        (generate_one_element): Set TODO_update_smt_usage if needed.
        (pass_sra): Remove TODO_update_smt_usage.
        * tree-ssa-forwprop.c (forward_propagate_addr_expr): Add some
        parameter.
        (tree_ssa_forward_propagate_single_use_vars): Return
        TODO_update_smt_usage if we need to update SMT usage.
        (pass_forwprop): Remove TODO_update_smt_usage.
        
2006-03-03  Diego Novillo  <dnovillo@redhat.com>

        * tree-ssa-operands.c: Tidy whitespace.  Fix spelling.
        (correct_use_link): Remove reference to get_stmt_operands.
        (update_stmt_operands): Likewise.
        (get_modify_expr_operands): New function factored out of
        parse_ssa_operands and get_expr_operands.
        Try to create V_MUST_DEFs for LHS by default.
        (get_expr_operands) <case MODIFY_EXPR>: Call
        get_modify_expr_operands.
        <case ARRAY_RANGE_REF>: Handle together with ARRAY_REF.
        <case BIT_FIELD_REF>: Clear opf_kill_def from FLAGS.
        (parse_ssa_operands) <case MODIFY_EXPR>: Call
        get_modify_expr_operands.

2006-03-03  Kazu Hirata  <kazu@codesourcery.com>

        * tree-dfa.c (referenced_var_lookup_if_exists): Remove.
        * tree-flow.h: Remove the prototype for
        referenced_var_lookup_if_exists.

2006-03-03  Steve Ellcey  <sje@cup.hp.com>

        PR rtl-optimization/26345
        PR target/19061
        * config/ia64/predicates.md (basereg_operand): Don't look in subregs.

2006-03-03  Roger Sayle  <roger@eyesopen.com>

        PR tree-optimization/26524
        * tree-scalar-evolution.c (interpret_rhs_modify_expr): Use
        fold_convert to create a constant of the appropriate type.

2006-03-03  Richard Sandiford  <richard@codesourcery.com>

        * doc/tm.texi: Refer to SYMBOL_REF_HAS_BLOCK_INFO_P instead of
        SYMBOL_REF_IN_BLOCK_P.
        * doc/rtl.texi: Likewise.  Refer to SYMBOL_FLAG_HAS_BLOCK_INFO instead
        of SYMBOL_FLAG_IN_BLOCK.
        * gengtype.c (adjust_field_rtx_def): Use SYMBOL_REF_HAS_BLOCK_INFO_P
        instead of SYMBOL_REF_IN_BLOCK_P.
        * explow.c (use_anchored_address): Likewise.
        * rtl.c (rtx_size): Likewise.
        * varasm.c (create_block_symbol): Set SYMBOL_FLAG_HAS_BLOCK_INFO
        instead of SYMBOL_FLAG_IN_BLOCK.
        (make_decl_rtl): Use SYMBOL_REF_HAS_BLOCK_INFO_P instead of
        SYMBOL_REF_IN_BLOCK_P.
        (assemble_variable): Likewise.
        (output_constant_def_contents): Likewise.
        (output_constant_pool): Likewise.
        (default_encode_section_info): Preserve SYMBOL_FLAG_HAS_BLOCK_INFO
        instead of SYMBOL_FLAG_IN_BLOCK.
        * rtl.h (block_symbol): Refer to SYMBOL_REF_HAS_BLOCK_INFO_P instead of
        SYMBOL_REF_IN_BLOCK_P.
        (SYMBOL_REF_BLOCK): Likewise.
        (SYMBOL_REF_OFFSET): Likewise.
        (BLOCK_SYMBOL_CHECK): Use SYMBOL_REF_HAS_BLOCK_INFO_P instead of
        SYMBOL_REF_IN_BLOCK_P.
        (SYMBOL_FLAG_IN_BLOCK): Replace with...
        (SYMBOL_FLAG_HAS_BLOCK_INFO): ...this.
        (SYMBOL_REF_IN_BLOCK_P): Replace with...
        (SYMBOL_REF_HAS_BLOCK_INFO_P): ...this.

2006-03-03  Jakub Jelinek  <jakub@redhat.com>

        * config/arm/unwind-arm.h (_Unwind_GetIPInfo): Fix pasto.

2006-03-02  Roger Sayle  <roger@eyesopen.com>

        * simplify-rtx.c (simplify_unary_operation): When simplifying
        (neg (lt X 0)) into (ashiftrt X C) or (lshiftrt X C), make sure
        that we perform the right shift in the appropriate mode, and
        then extend or truncate the result to requested mode.

2006-03-03  Zdenek Dvorak <dvorakz@suse.cz>

        * gengtype.c (main): Handle double_int type.
        * tree.h (struct tree_int_cst): Make type of int_cst double_int.
        * double-int.c: New file.
        * double-int.h: New file.
        * system.h: Include doubleint.h.
        * Makefile.in (SYSTEM_H): Include double-int.h.
        (double-int.o): Add.

2006-03-03  Joseph S. Myers  <joseph@codesourcery.com>

        PR bootstrap/26478
        * Makefile.in (stmp-int-hdrs): Remove include/unwind.h before
        copying over it.

2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-vrp.c (remove_range_assertions): Do not update statements
        unnecessarily.

2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>

        * cse.c (rest_of_handle_cse): Do not pass CLEANUP_PRE_LOOP to cfg
        cleanup.
        * gcse.c (rest_of_handle_gcse): Ditto.
        * except.c (gate_handle_eh): Ditto.
        * cfgcleanup.c (rest_of_handle_jump2): Ditto.
        * basic-block.h (CLEANUP_PRE_LOOP): Remove.

2006-03-02  Eric Christopher  <echristo@apple.com>

        * config/i386/i386.c (machopic_output_stub): Add indirection to
        jump.

2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>

        * loop.c: Removed.

2006-03-02  David S. Miller  <davem@sunset.davemloft.net>

        Sun Niagara specific optimizations.
        * config.gcc: Recognize niagara as target.
        * config/sparc/sparc.h (SPARC_RELAXED_ORDERING): Mention Niagara.
        (TARGET_CPU_niagara): Define.
        (CPP_CPU64_DEFAULT_SPEC): Define __sparc_v9__ for Niagara.
        (ASM_CPU64_DEFAULT_SPEC): Pass -Av9b for Niagara.
        (CPP_CPU_SPEC): Handle -mcpu=niagara.
        (ASM_CPU_SPEC): Likewise.
        (PROCESSOR_NIAGARA): New enum entry.
        (REGISTER_MOVE_COST): Handle Niagara.
        (BRANCH_COST, PREFETCH_BLOCK, SIMULTANEOUS_PREFETCHES): Likewise.
        * config/sparc/sparc.c (niagara_costs): New processor_costs entry.
        (sparc_override_options): Recognize "niagara", set appropriate
        default MASK_* values for it, and align functions to 32-bytes
        by default just like ULTRASPARC/ULTRASPARC3.
        (sparc_initialize_trampoline): Handle niagara like ultrasparc.
        (sparc64_initialize_trampoline): Likewise.
        (sparc_use_sched_lookahead): Use zero for niagara.
        (sparc_issue_rate): Use one for niagara.
        * config/sparc/niagara.md: New file.
        * config/sparc/sparc.md: Include it.
        * config/sparc/sol2-bi.h (CPP_CPU64_DEFAULT_SPEC,
        ASM_CPU32_DEFAULT_SPEC, ASM_CPU64_DEFAULT_SPEC): Set appropriately
        when default cpu is niagara.
        (CPP_CPU_SPEC): Handle -mcpu=niagara.
        (ASM_CPU_SPEC): Likewise.
        * config/sparc/sol2.h (ASM_CPU_DEFAULT_SPEC): Set appropriately
        when default cpu is niagara.
        (ASM_CPU_SPEC): Handle -mcpu=niagara.
        * config/sparc/linux64.h: Handle a default of TARGET_CPU_niagara
        just like v9/ultrasparc/ultrasparc3.
        * doc/invoke.texi: Add documentation for "niagara" and improve
        existing documentation for ultrasparc variants.

2006-03-02  Diego Novillo  <dnovillo@redhat.com>

        * tree-ssa-operands.c (update_stmt_operands): Update documentation.

2006-03-02  Richard Sandiford  <richard@codesourcery.com>

        * doc/tm.texi (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Document.
        (ASM_OUTPUT_BSS): Describe the two ways of handling global BSS,
        and say that only one is needed.
        * doc/rtl.texi (SYMBOL_REF_BLOCK): Say that the block can be null.
        * target.h (have_switchable_bss_sections): New hook.
        * explow.c (use_anchored_address): Check that the symbol is in a block.
        * varasm.c (tls_comm_section, comm_section, lcomm_section)
        (bss_noswitch_section): New variables.
        (get_unnamed_section): Add SECTION_UNNAMED to the flags.
        (get_noswitch_section): New function.
        (get_block_for_section): Allow SECT to be null.
        (unlikely_text_section_p): Use SECTION_STYLE.
        (bss_initializer_p): New function.
        (get_variable_section): Move earlier in file.  Take a new argument,
        prefer_noswitch_p.  Move bss checks from assemble_variable to here.
        Return one of the new *_sections in such cases.
        (get_block_for_decl): New function, extracting some logic from
        use_blocks_for_decl_p.
        (change_symbol_section): Remove in favor of...
        (change_symbol_block): ...this new function.
        (use_blocks_for_decl_p): Remove checks now performed by
        get_block_for_decl.
        (make_decl_rtl): Use change_symbol_block and get_block_for_decl.
        (ASM_EMIT_LOCAL, ASM_EMIT_BSS, ASM_EMIT_COMMON): Delete in favor of...
        (emit_local, emit_bss, emit_common): ...these new functions.
        Return true if the alignment was honored.
        (emit_tls_common): New function.
        (asm_emit_uninitialised): Delete.
        (assemble_variable_noswitch): New function, split out from...
        (assemble_variable): ...here.  Don't make decisions about common
        variables here.  Globalize all public decls that go into non-common
        sections.  Check whether SYMBOL_REF_BLOCK is null.
        (output_constant_def_contents): Check whether SYMBOL_REF_BLOCK is null.
        (output_constant_pool): Likewise.
        (init_varasm_once): Initialize the new section variables.
        (have_global_bss_p): New function.
        (categorize_decl_for_section): Use bss_initializer_p.
        (switch_to_section): Use SECTION_STYLE.  Abort for SECTION_NOSWITCH.
        (place_block_symbol): Assert that the symbol must be in a block.
        * target-def.h (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): New macro.
        (TARGET_INITIALIZER): Include it.
        * rtl.h (SYMBOL_REF_BLOCK): Document the null alternative.
        * output.h (SECTION_STYLE_MASK, SECTION_COMMON): New macros.
        (SECTION_MACH_DEP): Bump by two.
        (SECTION_UNNAMED, SECTION_NOSWITCH): New macros.
        (unnamed_section): Mention SECTION_UNNAMED in comment.
        (named_section): Likewise SECTION_NAMED.
        (noswitch_section_callback): New type.
        (noswitch_section): New structure.
        (section): Add a noswitch_section alternative.
        (SECTION_STYLE): New macro.
        (tls_comm_section, comm_section, lcomm_section): Declare.
        (bss_noswitch_section, have_global_bss_p): Declare.
        * config/elfos.h (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Override.
        * config/iq2000/iq2000.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS):
        Override.
        * config/v850/v850.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Override.
        * config/stormy16/stormy16.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS):
        Override.

2006-03-02  Daniel Berlin <dberlin@dberlin.org>

        * gcc/tree-vrp.c (execute_vrp): Return value.
        * gcc/regrename.c (rest_of_handle_regrename): Ditto.
        * gcc/tree-into-ssa.c (rewrite_into_ssa): Ditto.
        * gcc/tree-complex.c (tree_lower_complex): Ditto.
        (tree_lower_complex_O0): Ditto.
        * gcc/tracer.c (rest_of_handle_tracer): Ditto.
        * gcc/postreload-gcse.c (rest_of_handle_gcse2): Ditto.
        * gcc/postreload.c (rest_of_handle_postreload): Ditto.
        * gcc/tree-tailcall.c (execute_tail_recursion): Ditto.
        (execute_tail_calls): Ditto.
        * gcc/tree-ssa-loop-ch.c (copy_loop_headers): Ditto.
        * gcc/tree.h (init_function_for_compilation): Ditto.
        * gcc/ipa-cp.c (ipcp_driver): Ditto.
        * gcc/tree-scalar-evolution.c (scev_const_prop): Ditto.
        * gcc/tree-scalar-evolution.h (scev_const_prop): Ditto.
        * gcc/final.c (compute_alignments): Ditto.
        (rest_of_handle_final): Ditto.
        (rest_of_handle_shorten_branches): Ditto.
        (rest_of_clean_state): Ditto.
        * gcc/omp-low.c (execute_expand_omp): Ditto.
        (execute_lower_omp): Ditto.
        * gcc/tree-ssa-dse.c (tree_ssa_dse): Ditto.
        * gcc/ipa-reference.c (static_execute): Ditto.
        * gcc/tree-ssa-uncprop.c (tree_ssa_uncprop): Ditto.
        * gcc/reorg.c (rest_of_handle_delay_slots): Ditto.
        (rest_of_handle_machine_reorg): Ditto.
        * gcc/cgraphunit.c (rebuild_cgraph_edges): Ditto.
        * gcc/flow.c (recompute_reg_usage): Ditto.
        (rest_of_handle_remove_death_notes): Ditto.
        (rest_of_handle_life): Ditto.
        (rest_of_handle_flow2): Ditto.
        * gcc/tree-ssa-copyrename.c (rename_ssa_copies): Ditto.
        * gcc/tree-ssa-ccp.c (do_ssa_ccp): Ditto.
        (do_ssa_store_ccp): Ditto.
        (execute_fold_all_builtins): Ditto.
        * gcc/mode-switching.c (rest_of_handle_mode_switching): Ditto.
        * gcc/modulo-sched.c (rest_of_handle_sms): Ditto.
        * gcc/ipa-pure-const.c (static_execute): Ditto.
        * gcc/cse.c (rest_of_handle_cse): Ditto.
        (rest_of_handle_cse2): Ditto.
        * gcc/web.c (rest_of_handle_web): Ditto.
        * gcc/tree-stdarg.c (execute_optimize_stdarg): Ditto.
        * gcc/tree-ssa-math-opts.c (execute_cse_reciprocals): Ditto.
        * gcc/tree-ssa-dom.c (tree_ssa_dominator_optimize): Ditto.
        * gcc/tree-nrv.c (tree_nrv): Ditto.
        (execute_return_slot_opt): Ditto.
        * gcc/tree-ssa-alias.c (compute_may_aliases): Ditto.
        (create_structure_vars): Ditto.
        * gcc/loop-init.c (rtl_loop_init): Ditto.
        (rtl_loop_done): Ditto.
        (rtl_move_loop_invariants): Ditto.
        (rtl_unswitch): Ditto.
        (rtl_unroll_and_peel_loops): Ditto.
        (rtl_doloop): Ditto.
        * gcc/gimple-low.c (lower_function_body): Ditto.
        (mark_used_blocks): Ditto.
        * gcc/tree-ssa-sink.c (execute_sink_code): Ditto.
        * gcc/ipa-inline.c (cgraph_decide_inlining): Ditto.
        (cgraph_early_inlining): Ditto.
        * gcc/global.c (rest_of_handle_global_alloc): Ditto.
        * gcc/jump.c (cleanup_barriers): Ditto.
        (purge_line_number_notes): Ditto.
        * gcc/ifcvt.c (rest_of_handle_if_conversion): Ditto.
        (rest_of_handle_if_after_reload): Ditto.
        * gcc/tree-ssa-loop.c (tree_ssa_loop_init): Ditto.
        (tree_ssa_loop_im): Ditto.
        (tree_ssa_loop_unswitch): Ditto.
        (tree_vectorize): Ditto.
        (tree_linear_transform): Ditto.
        (tree_ssa_loop_ivcanon): Ditto.
        (tree_ssa_empty_loop): Ditto.
        (tree_ssa_loop_bounds): Ditto.
        (tree_complete_unroll): Ditto.
        (tree_ssa_loop_prefetch): Ditto.
        (tree_ssa_loop_ivopts): Ditto.
        (tree_ssa_loop_done): Ditto.
        * gcc/predict.c (tree_estimate_probability): Ditto.
        * gcc/recog.c (split_all_insns_noflow): Ditto.
        (rest_of_handle_peephole2): Ditto.
        (rest_of_handle_split_all_insns): Ditto.
        * gcc/tree-eh.c (lower_eh_constructs): Ditto.
        * gcc/regmove.c (rest_of_handle_regmove): Ditto.
        (rest_of_handle_stack_adjustments): Ditto.
        * gcc/local-alloc.c (rest_of_handle_local_alloc): Ditto.
        * gcc/function.c (instantiate_virtual_regs): Ditto.
        (init_function_for_compilation): Ditto.
        (rest_of_handle_check_leaf_regs): Ditto.
        * gcc/gcse.c (rest_of_handle_jump_bypass): Ditto.
        (rest_of_handle_gcse): Ditto.
        * gcc/ipa-type-escape.c (type_escape_execute): Ditto.
        * gcc/alias.c (rest_of_handle_cfg): Ditto.
        * gcc/tree-if-conv.c (main_tree_if_conversion): Ditto.
        * gcc/profile.c (rest_of_handle_branch_prob): Ditto.
        * gcc/tree-ssa-phiopt.c (tree_ssa_phiopt): Ditto.
        * gcc/rtl-factoring.c (rest_of_rtl_seqabstr): Ditto.
        * gcc/bt-load.c (rest_of_handle_branch_target_load_optimize): Ditto
        * gcc/tree-dfa.c (find_referenced_vars): Ditto.
        * gcc/except.c (set_nothrow_function_flags): Ditto.
        (convert_to_eh_region_ranges): Ditto.
        (rest_of_handle_eh): Ditto.
        * gcc/emit-rtl.c (unshare_all_rtl): Ditto.
        (remove_unnecessary_notes): Ditto.
        * gcc/except.h (set_nothrow_function_flags): Ditto.
        (convert_to_eh_region_ranges): Ditto.
        * gcc/cfgexpand.c (tree_expand_cfg): Ditto.
        * gcc/tree-cfgcleanup.c (merge_phi_nodes): Ditto.
        * gcc/tree-ssa-pre.c (do_pre): Ditto.
        (execute_fre): Ditto.
        * gcc/cfgcleanup.c (rest_of_handle_jump): Ditto.
        (rest_of_handle_jump2): Ditto.
        * gcc/tree-sra.c (tree_sra): Ditto.
        * gcc/tree-mudflap.c (execute_mudflap_function_ops): Ditto.
        (execute_mudflap_function_decls): Ditto.
        * gcc/tree-ssa-copy.c (do_copy_prop): Ditto.
        (do_store_copy_prop): Ditto.
        * gcc/ipa-prop.h (ipcp_driver): Ditto.
        * gcc/cfglayout.c (insn_locators_initialize): Ditto.
        * gcc/tree-ssa-forwprop.c
        (tree_ssa_forward_propagate_single_use_vars): Ditto.
        * gcc/cfglayout.h (insn_locators_initialize): Ditto.
        * gcc/tree-ssa-dce.c (tree_ssa_dce): Ditto.
        * gcc/tree-ssa.c (execute_early_warn_uninitialized): Ditto.
        (execute_late_warn_uninitialized): Ditto.
        * gcc/rtl.h (cleanup_barriers): Ditto.
        (split_all_insns_noflow): Ditto.
        (purge_line_number_notes): Ditto.
        (unshare_all_rtl): Ditto.
        (remove_unnecessary_notes): Ditto.
        (recompute_reg_usage): Ditto.
        (variable_tracking_main): Ditto.
        * gcc/integrate.c (emit_initial_value_sets): Ditto.
        * gcc/integrate.h (emit_initial_value_sets): Ditto.
        * gcc/tree-optimize.c (execute_free_datastructures): Ditto
        (execute_free_cfg_annotations): Ditto.
        (execute_fixup_cfg): Ditto.
        (execute_cleanup_cfg_pre_ipa): Ditto.
        (execute_cleanup_cfg_post_optimizing): Ditto.
        (execute_init_datastructures): Ditto.
        * gcc/tree-object-size.c (compute_object_sizes): Ditto.
        * gcc/combine.c (rest_of_handle_combine): Ditto.
        * gcc/tree-outof-ssa.c (rewrite_out_of_ssa): Ditto.
        * gcc/bb-reorder.c (duplicate_computed_gotos): Ditto.
        (rest_of_handle_reorder_blocks): Ditto.
        (rest_of_handle_partition_blocks): Ditto.
        * gcc/var-tracking.c (variable_tracking_main): Ditto.
        * gcc/tree-profile.c (tree_profiling): Ditto.
        * gcc/tree-vect-generic.c (expand_vector_operations): Ditto.
        * gcc/reg-stack.c (rest_of_handle_stack_regs): Ditto.
        * gcc/sched-rgn.c (rest_of_handle_sched): Ditto.
        (rest_of_handle_sched2): Ditto.
        * gcc/basic-block.h (free_bb_insn): Ditto.
        * gcc/tree-ssa-structalias.c (ipa_pta_execute): Ditto.
        * gcc/tree-cfg.c (execute_build_cfg): Ditto.
        (remove_useless_stmts): Ditto.
        (split_critical_edges): Ditto.
        (execute_warn_function_return): Ditto.
        (execute_warn_function_noreturn): Ditto.
        * gcc/tree-ssa-reassoc.c (execute_reassoc): Ditto.
        * gcc/cfgrtl.c (free_bb_for_insn): Ditto.
        * gcc/passes.c (execute_one_pass): Run additional
        todos returned by execute function.
        * gcc/tree-pass.h (struct tree_opt_pass): Make execute
        return a value.

2006-03-02  Richard Guenther  <rguenther@suse.de>

        * tree-ssa-alias.c (find_used_portions): Consider taking
        the address as making the variable not write-only.

2006-03-02  Nick Clifton  <nickc@redhat.com>

        * config.gcc (default_use_cxa_atexit): Extend the description of
        this configure variable.  Set its default value to "yes" for
        Linux, NetBSD and ELF targets on the assumption that they will
        use C libraries with the __cxa_atexit function.

2006-03-02  Ben Elliston  <bje@au.ibm.com>

        * config/rs6000/linux-unwind.h (frob_update_context): Mark `fs'
        parameter as unused to suppress a build warning.

2006-03-02  Ben Elliston  <bje@au.ibm.com>

        * mklibgcc.in: Depend on config/dfp-bit.h in rules that compile
        config/dfp-bit.c.

2006-03-01  Roger Sayle  <roger@eyesopen.com>

        PR other/26489
        * gthr-posix.h (__gthrw2): Define to take three parameters, the
        declared name, the weak reference name, and the typeof name.
        (__gthrw): Avoid expanding the declared name suffix.
        (__gthrw3): New Tru64 specific macro to simplify the OSF/1 decls.

2006-03-01  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2.h (DW_TAG_condition, DW_TAG_shared_type): New constants
        from DWARF 3.
        (DW_AT_description, DW_AT_binary_scale, DW_AT_decimal_scale,
        DW_AT_small, DW_AT_decimal_sign, DW_AT_digit_count,
        DW_AT_picture_string, DW_AT_mutable, DW_AT_threads_scaled,
        DW_AT_explicit, DW_AT_object_pointer, DW_AT_endianity,
        DW_AT_elemental, DW_AT_pure, DW_AT_recursive): New.
        (DW_OP_form_tls_address, DW_OP_call_frame_cfa, DW_OP_bit_piece): New.
        (DW_ATE_packed_decimal, DW_ATE_numeric_string, DW_ATE_edited,
        DW_ATE_signed_fixed, DW_ATE_unsigned_fixed): New.
        (DW_DS_unsigned, DW_DS_leading_overpunch, DW_DS_trailing_overpunch,
        DW_DS_leading_separate, DW_DS_trailing_separate): New.
        (DW_END_default, DW_END_big, DW_END_little): New.
        (DW_END_lo_user, DW_END_hi_user): Define.
        (DW_LNE_lo_user, DW_LNE_hi_user): Define.
        (DW_CFA_val_offset, DW_CFA_val_offset_sf, DW_CFA_val_expression): New.
        (DW_LANG_PLI, DW_LANG_ObjC, DW_LANG_ObjC_plus_plus, DW_LANG_UPC,
        DW_LANG_D): New.

2006-03-01  Diego Novillo  <dnovillo@redhat.com>

        * tree.def (SYMBOL_MEMORY_TAG): Rename from TYPE_MEMORY_TAG.
        Update all users.
        * tree-pass.h (PROP_smt_usage): Rename from PROP_tmt_usage.
        Update all users.
        (TODO_update_smt_usage): Rename from TODO_update_tmt_usage.
        Update all users.
        * tree.h (SMT_USED_ALONE): Rename from TMT_USED_ALONE.
        Update all users.
        * tree-flow.h (struct var_ann_d): Rename field 'type_mem_tag'
        to 'symbol_mem_tag'.
        Update all users.
        * doc/tree-ssa.texi: Update documentation to reflect TMT->SMT
        rename.

2006-03-01  Roger Sayle  <roger@eyesopen.com>

        * builtins.c (fold_builtin_copysign): Delete unreachable code.

2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>

        PR target/25761
        * config/darwin.h (MACHOPIC_JUST_INDIRECT): Check just
        MACHO_DYNAMIC_NO_PIC_P.
        (MACHOPIC_PURE): Check flag_pic and not MACHO_DYNAMIC_NO_PIC_P.

2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>

        PR target/26389
        * config/darwin-protos.h (darwin_asm_output_anchor):
        Declare.
        * config/darwin-sections.def (cstring_section):
        Add SECTION_MERGE to the flags.
        (literal4_section): Likewise.
        (literal8_section): Likewise.
        (objc_selector_refs_section): Likewise.
        (objc_cls_refs_section): Likewise.
        * config/darwin.c (darwin_asm_output_anchor): New
        function.
        * config/darwin.h (TARGET_ASM_OUTPUT_ANCHOR): Define.

2006-03-01  Daniel Berlin  <dberlin@dberlin.org>

        Fix PR tree-optimization/26443
        * tree-vrp.c (pass_vrp): Add TODO_update_tmt_usage
        to todo and PROP_tmt_usage to properties_destroyed.
        * tree-ssa-ccp.c (pass_ccp): Ditto.
        (pass_store_ccp): Ditto.
        * tree-ssa-dom.c (pass_dominator): Ditto.

2006-03-01  Diego Novillo  <dnovillo@redhat.com>

        * tree-ssa-operands.c: Cleanup whitespace.
        (get_asm_expr_operands): Move before first invocation.
        (get_indirect_ref_operands): Likewise.
        (get_tmr_operands): Likewise.
        (get_call_expr_operands): Likewise.
        (append_def): Likewise.
        (append_use): Likewise.
        (append_v_may_def): Likewise.
        (append_v_must_def): Likewise.
        (add_call_clobber_ops): Likewise.
        (add_call_read_ops): Likewise.
        (add_stmt_operand): Likewise.
        (add_virtual_operand): Likewise.
        (build_ssa_operands): Likewise.

2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>

        PR middle-end/26022
        Revert:
        PR middle-end/24437
        * tree-ssa-ccp.c (fold_stmt): Move folding of OBJ_TYPE_REF
        with a call expr to ...
        * fold-const.c (fold_ternary) <case CALL_EXPR>: Here.

2006-03-01  Diego Novillo  <dnovillo@redhat.com>

        * tree-vrp.c (extract_range_from_assert): Remove special
        handling for types with super-types.

2006-03-01  Ben Elliston  <bje@au.ibm.com>

        * config.gcc: Add t-dfprules to $tmake_file for powerpc-*-linux*
        and powerpc64-*-linux* configurations.
        * config/t-dfprules: New file.

        * mklibgcc.in: Add logic to handle $DFP_ENABLE and $DFP_CFLAGS.
        Compile dfp-bit.c from the source directory using -DWIDTH and
        $DFP_CFLAGS to control the compilation of that file, rather than
        generating width-specific versions in the build directory.
        * Makefile.in (libgcc.mk): Pass down DFP_ENABLE and DFP_CFLAGS.
        (LIBGCC_DEPS): Replace $(D32PBIT) et al with config/dfp-bit.[hc].

2006-02-28  Zack Weinberg  <zackw@panix.com>

        * doc/md.texi: Avoid use of @headitem so that makeinfo <4.7
        continues to work.

2006-02-28  Eric Christopher  <echristo@apple.com>

        * config/rs6000/darwin.h (ENABLE_STACK_EXECUTE): Define.
        Set up IN_LIBGCC definition of TARGET_64BIT.
        * config/i386/darwin.h (ENABLE_STACK_EXECUTE): Define.

2006-02-28  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/14752
        * c-common.c (c_common_truthvalue_conversion) <MINUS_EXPR,
        BIT_XOR_EXPR, BIT_AND_EXPR>: Delete.  Let fold optimize these
        cases via the construction of "expr != 0".

2006-02-28  Steven Bosscher  <stevenb.gcc@gmail.com>

        * alias.c (alias_invariant, alias_invariant_size): Remove.
        (record_base_value): Remove.
        (memrefs_conflict_p): Don't look at alias_invariant.
        (end_alias_analysis): Don't free it.
        * alias.h (record_base_value): Remove prototype.

2006-02-28  Paolo Bonzini  <bonzini@gnu.org>
            Adam Nemet  <anemet@caviumnetworks.com>

        * rtl.h (truncated_to_mode): Declare it.
        (struct rtl_hooks): Add reg_truncated_to_mode hook.
        * rtlhooks-def.h (RTL_HOOKS_REG_TRUNCATED_TO_MODE): New macro.
        (RTL_HOOKS_INITIALIZER): Include it.
        * rtlhooks.c (reg_truncated_to_mode_general): New function.
        * combine.c (RTL_HOOKS_REG_TRUNCATED_TO_MODE): Override to
        reg_truncated_to_mode.
        * rtlanal.c (truncated_to_mode): Define it.
        * simplify-rtx.c (simplify_unary_operation_1): Use it.

2006-02-28  Jeff Law  <law@redhat.com>

        * tree-chrec.c (chrec_convert_aggressive): Do not eliminate
        conversions where TYPE_MIN_VALUE/TYPE_MAX_VALUE do not cover
        the range allowed by TYPE_PRECISION.

        * tree.h (strct phi_arg_d): Remove unused NONZERO field.

2006-02-28  Dorit Nuzman  <dorit@il.ibm.com>

        PR tree-optimization/26419
        * doc/invoke.texi (ftree-vectorizer-verbose): Add information on
        values of n.

2006-02-27  Zack Weinberg  <zackw@panix.com>

        * doc/md.texi: Fix typo in previous change.

2006-02-27  Kenneth Zadeck <zadeck@naturalbridge.com>

        * df.c: Remove.

2006-02-27  Zack Weinberg  <zackw@panix.com>

        * rtl.def (define_constraint, define_register_constraint)
        (define_memory_constraint, define_address_constraint): New MD forms.
        * gensupport.c (process_rtx): Put define_constraint etc on the
        predicate queue.
        * genpreds.c (process_define_predicate): Adjust comment.  Validate
        the name, and call validate_exp to validate the expression.
        (mark_mode_tests, write_extract_subexp): Can assume correct input.
        (write_predicate_expr): Likewise.  NAME argument no longer necessary;
        all callers changed.
        (validate_exp, needs_variable, struct constraint_data)
        (constraints_by_letter_table, first_constraint, last_constraint_ptr)
        (FOR_ALL_CONSTRAINTS, generic_constraint_letters, const_int_constraints)
        (const_dbl_constraints, constraint_max_namelen)
        (have_register_constraints, have_memory_constraints)
        (have_address_constraints, have_address_constraints)
        (have_extra_constraints, have_const_int_constraints)
        (have_const_dbl_constraints, mangle, add_constraint)
        (process_define_constraint, process_define_register_constraint)
        (write_enum_constraint_num, write_lookup_constraint)
        (write_insn_constraint_len, write_regclass_for_constraint)
        (write_constraint_satisfied_p, write_insn_const_int_ok_for_constraint)
        (write_insn_extra_memory_constraint)
        (write_insn_extra_address_constraint)
        (write_satisfies_constraint_fns): New.
        (write_tm_preds_h): If we have new-style constraint definitions,
        prototype the functions generated from them, and define the
        old constraint interface (still used by generic code) in terms of
        those functions.
        (write_insn_preds_c): If we have new-style constraint definitions,
        generate all relevant functions from those definitions.
        (main): Handle define_constraint etc.
        * genoutput.c (struct constraint_data, indep_constraints)
        (mdep_constraint_letters, constraints_by_letter_table, note_constraint)
        (mdep_constraint_len): New data structures and functions, defined
        #ifdef USE_MD_CONSTRAINTS.
        (check_constraint_len): Don't define #ifdef USE_MD_CONSTRAINTS.
        (validate_insn_alternatives): If USE_MD_CONSTRAINTS is defined,
        use new logic to validate operand constraints against constraint
        definitions.
        (main): Process define_constraint etc. if USE_MD_CONSTRAINTS is
        defined.
        * defaults.h: If none of the old-style constraint macros are
        defined, define USE_MD_CONSTRAINTS; do not provide defaults for any
        old-style macros; and poison REG_CLASS_FROM_LETTER,
        CONST_OK_FOR_LETTER_P, CONST_DOUBLE_OK_FOR_LETTER_P, and
        EXTRA_CONSTRAINT.
        * recog.c (reg_fits_class_p): If cl is NO_REGS, return 0 immediately.
        * doc/md.texi: Document new constraint-definition mechanism and the
        C interface it provides.  Remove references to old mechanism
        elsewhere in the document.
        (Machine Constraints): Use pathnames relative to gcc directory,
        i.e. config/ARCH/FILE.  Change i386 section to refer to
        config/i386/predicates.md; update that section to match docstrings.
        * doc/tm.texi: Move all documentation of the old constraint-
        definition macros to their own section, clearly mark as obsolete.

        * config/i386/predicates.md (R, q, Q, l, a, b, c, d, S, D, A, f, t)
        (u, y, x, Y, I, J, K, L, M, N, O, G, C, e, Z): New constraint
        definitions.
        * config/i386/i386.h (REG_CLASS_FROM_LETTER, CONST_OK_FOR_LETTER_P)
        (CONST_DOUBLE_OK_FOR_LETTER_P, EXTRA_CONSTRAINT): Delete.
        * config/i386/i386.md (*movdf_nointeger): Remove stray 'H' from
        constraint strings.
        (splits and peepholes): Use satisfies_constraint_*.
        * config/i386/i386.c (memory_address_length)
        (ix86_attr_length_immediate_default): Use satisfies_constraint_*.

2006-02-27  Daniel Berlin  <dberlin@dberlin.org>

        * lambda-code.c (can_convert_to_perfect_nest): Allow any type of
        scalar operation to be put back into the loop.

2006-02-27  Jakub Jelinek  <jakub@redhat.com>

        PR other/26208
        * unwind-dw2.c (struct _Unwind_Context): Add signal_frame field.
        (extract_cie_info): Handle S flag in augmentation string.
        (execute_cfa_program): If context->signal_frame, execute also
        fs->pc == context->ra instructions.
        (uw_frame_state_for): If context->signal_frame, don't subtract one
        from context->ra to find FDE.
        (uw_update_context_1): Set context->signal_frame to
        fs->signal_frame.
        (_Unwind_GetIPInfo): New function.
        * unwind-dw2.h (_Unwind_FrameState): Add signal_frame field.
        * unwind-c.c (PERSONALITY_FUNCTION): Use _Unwind_GetIPInfo instead
        of _Unwind_GetIP.
        * unwind-sjlj.c (_Unwind_GetIPInfo): New function.
        * unwind-generic.h (_Unwind_GetIPInfo): New prototype.
        * unwind-compat.c (_Unwind_GetIPInfo): New function.
        * libgcc-std.ver (_Unwind_GetIPInfo): Export @@GCC_4.2.0.
        * config/ia64/unwind-ia64.c (_Unwind_GetIPInfo): New function.
        * config/arm/unwind-arm.h (_Unwind_GetIPInfo): Define.
        * config/i386/linux-unwind.h (x86_fallback_frame_state,
        x86_64_fallback_frame_state): Set fs->signal_frame.
        * config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Likewise.
        (MD_FROB_UPDATE_CONTEXT): Define unconditionally.
        (frob_update_context): Likewise.  Workaround missing S flag in
        Linux 2.6.12 - 2.6.16 kernel vDSOs.
        * config/s390/linux-unwind.h (s390_fallback_frame_state): Likewise.
        Remove the psw_addr + 1 hack.

2006-02-27  Daniel Berlin  <dberlin@dberlin.org>

        * tree-ssa-structalias.c (get_constraint_for): Move code to deal
        with aggregates here.
        (find_func_aliases): Remove code for &<aggregate> from here.

2006-02-26  Roger Sayle  <roger@eyesopen.com>

        * fold-const.c (fold_binary) <EQ_EXPR>:  Fold (~X & C) eq/ne 0 as
        (X & C) ne/eq 0, where C is a single bit, i.e. a power of two.
        Fold both "((X & C) ^ C) eq/ne 0" and "((X ^ C) & C) eq/ne 0"
        as (X & C) ne/eq 0.

2006-02-26  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/19983
        * real.c (real_nan): Allow both 0x and 0X as hexadecimal prefixes.

2006-02-26  Zdenek Dvorak <dvorakz@suse.cz>

        * opts.c (decode_options): Do not handle flag_strength_reduce.
        (common_handle_option): Handle OPT_floop_optimize, OPT_frerun_loop_opt
        and OPT_fstrength_reduce.
        * tree-ssa-loop.c (tree_ssa_loop_prefetch): Only test
        flag_prefetch_loop_arrays for being nonzero.
        * common.opt (floop-optimize, frerun-loop-opt): Resurrected as
        no-ops.
        (fprefetch-loop-arrays-rtl): Removed.
        (flag_prefetch_loop_arrays): Do not specify the value.

        * doc/passes.texi: Update documentation of loop optimizer
        passes.
        * doc/invoke.texi (-fstrength-reduce, -fprefetch-loop-arrays-rtl,
        -frerun-loop-opt): Remove.

2006-02-26  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/26421
        * tree-ssa-alias.c (find_used_portions): Don't treat parameters
        in function calls that are ADDR_EXPRs as using the whole structure.

2006-02-26  Steven Bosscher  <stevenb.gcc@gmail.com>

        * common.opt (-floop-optimize, -frerun-loop-opt): Remove.
        * tree-pass.h (pass_loop_optimize): Remove.
        * passes.c (pass_loop_optimize): Never run it.
        * toplev.c (backend_init): Don't call init_loop.
        * opts.c (flag_loop_optimize_set): Remove.
        (decode_options): Never set flag_loop_optimize or flag_rerun_loop_opt.
        (common_handle_option) <OPT_floop_optimize>: Remove.  Don't disable
        the old RTL loop optimizer when profiling enabled.
        * predict.c (tree_estimate_probability): Always strip builtin_expect.
        * cfgcleanup.c (try_forward_edges): Don't avoid killing loop
        pre-headers for the sake of the old RTL loop optimizer.
        * Makefile.in: Remove all references to loop.o.

        * doc/invoke.texi: Remove all references to -floop-optimize
        and -frerun-loop-opt.

2006-02-26  Zack Weinberg  <zackw@panix.com>

        * doc/md.texi (Machine Constraints): Refer to all files with paths
        relative to gcc directory (i.e. config/CPU/file).  Add missing
        @table @code ... @end table to M32C subsection.

2006-02-26  Roger Sayle  <roger@eyesopen.com>

        * fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & 1) ^ 1 as
        (X & 1) == 0.
        <BIT_AND_EXPR>: Fold (X ^ 1) & 1 and ~X & 1 as (X & 1) == 0.

2006-02-26  Roger Sayle  <roger@eyesopen.com>
            James A. Morrison  <phython@gcc.gnu.org>

        PR middle-end/21137
        * fold-const.c (fold_binary) <EQ_EXPR>:  Fold ((X>>C1)&C2) eq/ne 0,
        when C2 is a power of two, as either (X&(C2<<C1)) eq/ne 0 if the
        new constant C2<<C1, or as (X<0) or (X,false) depending upon the
        signedness of the shift operation.

2006-02-26  Dorit Nuzman  <dorit@il.ibm.com>

        PR tree-optimization/26359
        * tree-ssa-alias.c (new_type_alias): Set fields for new tag.

2006-02-25  Roger Sayle  <roger@eyesopen.com>

        * simplify-rtx.c (simplify_relational_operation_1):  Simplify
        (X^Y) == 0 as X == Y and (X^Y) != 0 as X != Y.  Simplify (X^Y) == Y
        as X == 0, and some symmetry related transformations.
        Simplify (X^C1) == C2 as X == (C1^C2).  Split long comment line.

2006-02-25  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/23673
        * fold-const.c (fold_binary) <EQ_EXPR>:  Fold (X^Y) == 0 as X == Y
        and (X^Y) != 0 as X != Y.  Fold (X^Y) == Y as X == 0, and some
        symmetry related transformations.  Fold (X^C1) == C2 as
        X == (C1^C2).

2006-02-25  Juergen Weigert  <jw@suse.de>
        Richard Guenther  <rguenther@suse.de>

        * scan-decls.c (scan_decls): Don't fetch new statement after CPP_EOF.

2006-02-24  Adam Nemet  <anemet@caviumnetworks.com>

        * combine.c (gen_lowpart_or_truncate): Call
        simplify_gen_unary(TRUNCATE, ...) instead of gen_rtx_TRUNCATE.

2006-02-24  Diego Novillo  <dnovillo@redhat.com>

        * doc/invoke.texi: Move -fopenmp description to "Options for
        Code Generation".
        Remove reference to -lgomp.

2006-02-24  David Edelsohn  <edelsohn@gnu.org>

        * doc/install.texi: Require GNU tar version 1.14.

2006-02-24  Geoffrey Keating  <geoffk@apple.com>

        * doc/tm.texi (Run-time Target): Document C_COMMON_OVERRIDE_OPTIONS.
        * doc/invoke.texi (C++ Dialect Options): Document
        -fno-use-cxa-get-exception-ptr.
        * configure.ac: Define DEFAULT_USE_CXA_ATEXIT to 2 not 1.
        * configure: Regenerate.
        * c.opt (fuse-cxa-get-exception-ptr): New.
        * c-opts.c (c_common_handle_option): Handle
        OPT_fuse_cxa_get_exception_ptr.
        * c-common.c (flag_use_cxa_atexit): Update documentation.
        (flag_use_cxa_get_exception_ptr): New.
        * c-common.h (flag_use_cxa_get_exception_ptr): New.
        * config/rs6000/darwin.h (SUBTARGET_OVERRIDE_OPTIONS): Improve
        documentation.
        (C_COMMON_OVERRIDE_OPTIONS): New.

2006-02-24  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/24952
        * combine.c (try_combine): Explicitly check whether GET_CODE is
        a SET or a CLOBBER, instead on checking that it isn't a USE.

2006-02-24  Roger Sayle  <roger@eyesopen.com>

        * fold-const.c (fold_comparison): New subroutine of fold_binary
        containing transformations common to both the equality and
        ordering relational operators, factored out of fold_binary.
        (fold_binary): Separate out the equality operators (EQ_EXPR
        and NE_EXPR) from the ordering operators (LT_EXPR, GT_EXPR,
        LE_EXPR and GE_EXPR), calling fold_comparison to perform the
        transformations common to both.
        (fold_div_compare): Fix latent bugs in the previously unreachable
        LT_EXPR and GE_EXPR cases.

2006-02-24  David Edelsohn  <edelsohn@gnu.org>

        * config/rs6000/rs6000.c (rs6000_init_builtins): Change
        decl libname for clog to __clog on AIX.

        * config/rs6000/xcoff.h (MAX_OFILE_ALIGNMENT): Define.

2006-02-24  Alan Modra  <amodra@bigpond.net.au>

        PR target/26453
        * config/rs6000/rs6000.c (rs6000_output_function_epilogue): Don't
        output traceback table for thunks.  Localise rs6000_stack_info call.

2006-02-23  Roger Sayle  <roger@eyesopen.com>
            Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * gthr-posix.h (__gthrw): Fix typo in comment.

2006-02-23  Geoffrey Keating  <geoffk@apple.com>

        * doc/cpp.texi (Character sets): Document that we do support
        input files to be in any character set.

2006-02-23  Jeff Law  <law@redhat.com>

        * tree.h (PHI_ARG_NONZERO): Remove.
        * tree-phinodes.c (add_phi_arg): No longer initialize PHI_ARG_NONZERO.
        (remove_phi_arg_num): No longer copy PHI_ARG_NONZERO from the old
        node to the new node.

        PR tree-optimization/26425
        * tree-vrp.c (vrp_visit_assignment): If the LHS's type has a NULL
        min/max, then assume its varying.

2006-02-23  Zdenek Dvorak <dvorakz@suse.cz>

        PR rtl-optimization/26316
        * rtlanal.c (enum may_trap_p_flags): New.
        (may_trap_p_1): Take flags instead of unaligned_mems argument.  Ignore
        MEM_NOTRAP_P if flags & MTP_AFTER_MOVE.
        (may_trap_p, may_trap_or_fault_p): Pass flags to may_trap_p_1.
        (may_trap_after_code_motion_p): New function.
        * loop-invariant.c (find_identical_invariants): Fix dump formating.
        (find_invariant_insn): Use may_trap_after_code_motion_p.
        * rtl.h (may_trap_after_code_motion_p): Declare.

2006-02-23  Zdenek Dvorak <dvorakz@suse.cz>

        * emit-rtl.c (immed_double_const): Cleanup.

2006-02-23  Daniel Berlin  <dberlin@dberlin.org>

        Fix PR tree-optimization/26376
        * tree-ssa-structalias.c (find_func_aliases):  Use get_id_for_tree,
        remove assert.

2006-02-23  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/26412
        * gimplify.c (omp_add_variable): Guard variable size decl test with
        DECL_SIZE (decl) check.

2006-02-23  Richard Guenther  <rguenther@suse.de>

        PR middle-end/26439
        * tree-ssa-structalias.c (find_func_aliases): Handle complex types
        like aggregate types.

2006-02-23  Jakub Jelinek  <jakub@redhat.com>

        * configure.ac: Add --with{,out}-long-double-128 configure option.
        (TARGET_DEFAULT_LONG_DOUBLE_128): New test.
        * configure: Rebuilt.
        * config.in: Rebuilt.
        * doc/install.texi (Options specification): Document
        --with-long-double-128.

        * config/rs6000/linux.h [TARGET_DEFAULT_LONG_DOUBLE_128]
        (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
        * config/rs6000/linux64.h [TARGET_DEFAULT_LONG_DOUBLE_128]
        (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.

2006-02-23  Aldy Hernandez  <aldyh@redhat.com>

        * config/s390/s390.c (override_options): Handle
        TARGET_DEFAULT_LONG_DOUBLE_128.

        * config/alpha/alpha.c (override_options): Handle
        TARGET_DEFAULT_LONG_DOUBLE_128.

        * config/sparc/sparc.c (sparc_override_options): Handle
        TARGET_DEFAULT_LONG_DOUBLE_128.

2006-02-22  Daniel Jacobowitz  <dan@codesourcery.com>

        * Makefile.in (stmp-fixinc): Use real-$(INSTALL_HEADERS_DIR).
        (real-install-headers-tar, real-install-headers-cpio)
        (real-install-headers-cp): New targets.

2006-02-22  Richard Sandiford  <richard@codesourcery.com>

        * tree.h (variable_section): Delete.
        * varasm.c (variable_section): Delete.

2006-02-22  Paolo Bonzini  <bonzini@gnu.org>

        * install.texi: Add notes on install.texi2html.
        (Building in parallel): Do not use footnotes.

2006-02-21  Aldy Hernandez  <aldyh@redhat.com>

        PR libgomp/26234
        * doc/install.texi (Configuration): Document --disable-libgomp.

2006-02-21  Geoffrey Keating  <geoffk@apple.com>

        * config/i386/darwin.h (DWARF2_FRAME_REG_OUT): New.

2006-02-21  Alexandre Oliva  <aoliva@redhat.com>

        * config/i386/sse.md (vec_extractv2df_1_sse): New.
        (vec_extractv2df_0_sse): New.

2006-02-21  Alexandre Oliva  <aoliva@redhat.com>

        * defaults.h (CFA_FRAME_BASE_OFFSET): Define.
        * config/ia64/ia64.h (CFA_FRAME_BASE_OFFSET): Override.
        * doc/tm.texi (CFA_FRAME_BASE_OFFSET): Document.
        * dwarf2out.c (build_cfa_loc): New offset parameter.  Add it
        to the result of the expression.
        (def_cfa_1): Adjust.
        (frame_pointer_cfa_offset): Rename to...
        (frame_pointer_fb_offset): ... this.  Adjust all uses.
        (convert_cfa_to_loc_list): Rename to...
        (convert_cfa_to_fb_loc_list): ... this.  New offset parameter.
        Pass it on to build_cfa_loc.
        (compute_frame_pointer_to_cfa_displacement): Rename to...
        (compute_frame_pointer_to_fb_displacement): ... this.  New
        offset parameter.  Use it in computation.
        (gen_subprogram_die): Compute cfa_fb_offset with the new
        macro, and use it to compute the fb loc list and the
        displacement.

2006-02-21  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/predicates.md (cc_operand): Delete predicate.  All uses
        replaced with register_operand.
        * config/bfin/bfin.c (bfin_register_move_cost): Moving CC to any
        non-DREG is expensive.
        * config/bfin/bfin.h (FIXED_REGISTERS): CC isn't fixed.
        * config/bfin/bfin.md (movbi): Fix constraints and template for moves
        involving memory.

2006-02-21  Joseph S. Myers  <joseph@codesourcery.com>

        * doc/install.texi2html: Use set -e.

2006-02-21  Richard Sandiford  <richard@codesourcery.com>

        * doc/tm.texi (ASM_OUTPUT_SHARED_COMMON, ASM_OUTPUT_SHARED_BSS)
        (ASM_OUTPUT_SHARED_LOCAL): Delete.
        * doc/invoke.texi (-fshared-data): Delete.
        * common.opt (fshared-data): Delete.
        * varasm.c (asm_emit_uninitialised): Remove flag_shared_data handling.
        (assemble_static_space): Remove #if 0 code.
        * system.h (ASM_OUTPUT_SHARED_COMMON, ASM_OUTPUT_SHARED_BSS)
        (ASM_OUTPUT_SHARED_LOCAL): Poison.
        * config/cris/cris.h: Remove FIXME.

2006-02-21  Paolo Bonzini  <bonzini@gnu.org>

        * doc/sourcebuild.texi (Front End Directory): No more double-colon
        hooks.

2006-02-21  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/26379
        * combine.c (simplify_shift_const_1): Disable nested shifts
        optimization for vector shifts.

2006-02-20  Roger Sayle  <roger@eyesopen.com>

        PR tree-optimization/26361
        * tree-vrp.c (extract_range_from_unary_expr): Handle NEGATE_EXPR
        of unsigned integer types.

2006-02-20  Sebastian Pop  <pop@cri.ensmp.fr>

        * tree-chrec.c (eq_evolutions_p): New.
        * tree-chrec.h (eq_evolutions_p): Declared.
        * tree-data-ref.c: Fix formatting.
        (datadep_stats, dependence_stats): New.
        (gcd): Moved...
        (print_direction_vector): New.
        (dump_data_dependence_relation): Use print_direction_vector.
        (object_analysis, create_data_ref): Handle COMPONENT_REF.
        (compute_subscript_distance): Static.
        (initialize_data_dependence_relation): Static.  Get the number
        of loops surrounding the references from the callers, and initialize
        DDR_SIZE_VECT to nb_loops.  Use both base_addr_differ_p and
        base_object_differ_p analyzers.
        (analyze_ziv_subscript, analyze_siv_subscript_cst_affine,
        compute_overlap_steps_for_affine_1_2,
        analyze_subscript_affine_affine): Count the classified dependences.
        Print a message when a test failed.
        (can_use_analyze_subscript_affine_affine): New.
        (analyze_siv_subscript): Compute the data dependences on symbolic
        scevs that verify can_use_analyze_subscript_affine_affine.
        (chrec_steps_divide_constant_p): Returns true, false, or unknown.
        (analyze_miv_subscript): Update use of chrec_steps_divide_constant_p.
        Handle symbolic scevs.
        (analyze_overlapping_iterations): Let symbolic affine scevs to be
        analyzed.
        (subscript_dependence_tester): Moved...
        (build_classic_dist_vector, build_classic_dir_vector): Don't use
        lambda_vector_clear on newly allocated vectors.  Get nb_loops from
        DDR_SIZE_VECT instead of getting it in parameter.
        (subscript_dependence_tester): ... here.  Take as a parameter
        loop_nest_depth.  Call build_classic_dist_vector and
        build_classic_dir_vector.
        (compute_affine_dependence): Update subscript_dependence_tester
        parameters.  Update datadep_stats counters.  Call
        compute_subscript_distance.
        (compute_self_dependence): Save the dist and dir vectors.  Call
        compute_subscript_distance.
        (ddr_p, DEF_VEC_P(ddr_p), DEF_VEC_ALLOC_P(ddr_p,heap)): Moved...
        (compute_all_dependences): Reorder parameters as they were before
        conversion to VEC.  Pass nb_loops and loop_nest_depth.  Don't call
        compute_subscript_distance.  Update the use of
        compute_affine_dependence and initialize_data_dependence_relation.
        (find_data_references_in_loop): Handle COMPONENT_REF.
        (compute_data_dependences_for_loop): Initialize dependence_stats.
        Don't call build_classic_dist_vector and build_classic_dir_vector.
        Update the parameters of initialize_data_dependence_relation and
        compute_all_dependences.  Print the statistics from datadep_stats.
        (analyze_all_data_dependences): Static.  Not used until the pass for
        checking the data dependences is contributed.
        * tree-data-ref.h (ddr_p, DEF_VEC_P(ddr_p),
        DEF_VEC_ALLOC_P(ddr_p,heap)): ... here.
        (initialize_data_dependence_relation, compute_affine_dependence,
        analyze_all_data_dependences, compute_subscript_distance): Removed.
        (print_direction_vector): New.
        * lambda.h (gcd): ... here.
        (lambda_vector_gcd): Moved here from gcd_vector.
        * lambda-code.c (gcd, gcd_vector): Removed.
        (lambda_compute_target_space): Use lambda_vector_gcd.  Fix formatting.
        * Makefile.in (tree-vect-patterns.o): Depends on TREE_DATA_REF_H.

2006-02-20  Diego Novillo  <dnovillo@redhat.com>

        * ipa-type-escape.c: Tidy some comments and white space.
        * tree-ssa-operands.c: Likewise.

2006-02-20  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/25879
        * tree-pretty-print.c (debug_tree_chain): Walk the chains.
        (dump_decl_name): Do not walk the decl tree chains.
        * tree-pass.h (TDF_CHAIN): Remove.

2006-02-20  Rafael Ávila de Espíndola  <rafael.espindola@gmail.com>

        * Makefile.in (C): Remove