+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
+ (PROTO): Remove
+ (.PHONY): Remove C and PROTO
+
+2006-02-20 Roger Sayle <roger@eyesopen.com>
+
+ PR middle-end/26236
+ * doc/c-tree.texi (INTEGER_TYPE): Remove reference to the now
+ deprecated CHAR_TYPE tree code.
+
+2006-02-20 Paolo Bonzini <bonzini@gnu.org>
+
+ * configure.ac (target_list): Add install-info, dvi, html.
+ * configure: Regenerate.
+
+ * ada/Make-lang.in, cp/Make-lang.in, fortran/Make-lang.in,
+ java/Make-lang.in, objc/Make-lang.in, objcp/Make-lang.in,
+ treelang/Make-lang.in: Do not use double-colon rules.
+
+2006-02-20 Daniel Berlin <dberlin@dberlin.org>
+
+ * tree.h (struct tree_memory_tag): Add is_used_alone member.
+ (TMT_USED_ALONE): New macro.
+ * tree-pass.h (PROP_tmt_usage): New property.
+ (TODO_update_tmt_usage): New todo.
+ * tree-ssa-alias.c (updating_used_alone): New variable.
+ (recalculate_used_alone): New function.
+ (compute_may_aliases): Set updating_used_alone, call
+ recalculate_used_alone.
+ * tree-sra.c (pass_sra): Note that this pass destroys
+ PROP_tmt_usage, and add TODO_update_tmt_usage.
+ * tree-ssa-forwprop.c (pass_forwprop): Ditto.
+ * tree-flow.h (updating_used_alone): Prototype.
+ (recalculate_used_alone): Ditto.
+ * passes.c (execute_todo): Add code to set updating_used_alone,
+ and call recalculate.
+ * tree-ssa-operands.c (add_virtual_operand): Only append bare def
+ for clobber if used alone, and add assert to verify used_alone
+ status.
+
+2006-02-20 Angel Nunez Mencias <anunez@de.ibm.com>
+
+ * config/s390/s390.c (legitimize_pic_address): Assertions checking
+ for non tls symbols added.
+ (legitimize_address): Do nothing for PLUS expressions if one of the
+ addends is a tls symbol reference.
+
+2006-02-20 Paolo Bonzini <bonzini@gnu.org>
+
+ PR bootstrap/25476
+
+ * Makefile.in (LDFLAGS): Define from autoconf substitution.
+
+ * Makefile.in (BOOTSTRAPPING): New.
+ (quickstrap): New definition if BOOTSTRAPPING=yes.
+
+ * Makefile.in (CONFIG_LANGUAGES): Substitute all_selected_languages.
+ * configure.ac: Substitute all_selected_languages with the languages
+ that were configured. For all the other variables except
+ lang_specs_files, include all the languages in the tree.
+ * configure: Regenerate.
+
+ * Makefile.in (stmp-fixinc): Copy includes from the prev-gcc directory,
+ if there is one. Run the commands to run fixincludes in the same
+ subshell.
+
+ * doc/makefile.texi: Document new makefile targets from toplevel bootstrap.
+ * doc/install.texi: Document exact conventions for searching target tools.
+ Document --with-build-time-tools. Document toplevel bootstrap. Document
+ something more about building an Ada cross-compiler. Don't list GNU Make
+ requirements which affect all platforms.
+
+2006-02-19 Roger Sayle <roger@eyesopen.com>
+
+ PR middle-end/19543
+ * varasm.c (compare_constant) <INTEGER_CST>: Integer constants are
+ only equivalent if the have both the same mode and precision.
+
+2006-02-20 Ben Elliston <bje@au.ibm.com>
+
+ * doc/tree-ssa.texi (Interfaces): Describe low vs. high GIMPLE.
+
2006-02-19 Roger Sayle <roger@eyesopen.com>
Steven Bosscher <stevenb.gcc@gmail.com>
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