+2005-03-02 Devang Patel <dpatel@apple.com>
+
+ PR tree-optimization/18815
+ * tree-if-conv.c (combine_blocks): Adjust loop header edges for
+ loops with zero exit edges.
+
+2005-03-02 Kazu Hirata <kazu@cs.umass.edu>
+
+ * cfg.c (connect_src, connect_dest, disconnect_src,
+ disconnct_dest): New.
+ (unchecked_make_edge, remove_edge, redirect_edge_succ,
+ redirect_edge_pred): Use the new functions.
+
+ * tree-ssa-dom.c (tree_ssa_dominator_optimize): Call
+ free_dominance_info only when needed.
+
+2005-03-02 David Edelsohn <edelsohn@gnu.org>
+
+ PR target/20276
+ * config/rs6000/predicates.md (reg_or_cint64_operand): Fix typo.
+ (reg_or_sub_cint64_operand): Same.
+
+2005-03-02 Jeff Law <law@redhat.com>
+
+ * tree-ssa-dom.c (tree_ssa_dominator_optimize): Fix setting of
+ CFG_ALTERED in the main DOM iteration loop.
+
+2005-03-02 Mark Mitchell <mark@codesourcery.com>
+
+ PR c++/19916
+ * varasm.c (initializer_constant_valid_p): Allow conversions
+ between OFFSET_TYPEs. Tidy.
+
+2005-03-02 Hans-Peter Nilsson <hp@axis.com>
+
+ * config/cris/cris.md ("return"): Remove epilogue delay list
+ sanity check.
+
+2005-03-02 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * config/arm/linux-elf.h (ARM_FUNCTION_PROFILER): Do not use (PLT)
+ for Thumb.
+ * config/arm/netbsd-elf.h (ARM_FUNCTION_PROFILER): Likewise.
+
+2005-03-02 Kazu Hirata <kazu@cs.umass.edu>
+
+ * cfgloop.h, cfgloopanal.c, cfgloopmanip.c, conflict.c,
+ loop-init.c, loop-unroll.c, print-tree.c, reg-notes.def,
+ config/m68k/m68k.c, config/mips/mips.h,
+ config/rs6000/rs6000-protos.h, doc/contrib.texi,
+ doc/include/gcc-common.texi: Update copyright.
+
+ PR middle-end/18029 and PR middle-end/18030
+ * expr.c (optimize_bitfield_assignment_op): Add a special case
+ to handle BIT_IOR_EXPR and BIT_XOR_EXPR.
+
+ * fold-const.c (fold_unary): New.
+ (fold): Call fold_unary on unary expressions.
+
+2005-03-02 Richard Guenther <rguenth@gcc.gnu.org>
+
+ * cgraph.h (struct cgraph_edge): Add prev_caller and
+ prev_callee fields.
+ (cgraph_node_remove_callees): Export.
+ * cgraph.c (cgraph_create_edge): Initialize prev_caller
+ and prev_callee.
+ (cgraph_edge_remove_callee): New function.
+ (cgraph_edge_remove_caller): Likewise.
+ (cgraph_remove_edge): Use.
+ (cgraph_redirect_edge_callee): Likewise.
+ (cgraph_node_remove_callees): New function.
+ (cgraph_node_remove_callers): Likewise.
+ (cgraph_remove_node): Use.
+ * tree-optimize.c (tree_rest_of_compilation): Use
+ cgraph_node_remove_callees instead of manual loop.
+ * cgraphunit.c (cgraph_finalize_function): Likewise.
+ (cgraph_expand_function): Likewise.
+ (cgraph_remove_unreachable_nodes): Likewise.
+
+2005-03-02 Joseph S. Myers <joseph@codesourcery.com>
+
+ PR c/8927
+ * c-tree.h (undeclared_variable, build_external_ref): Add extra
+ argument.
+ * c-decl.c (undeclared_variable): Take location as argument.
+ * c-typeck.c (build_external_ref): Likewise.
+ * c-parser.c (c_parser_postfix_expression): Pass location of
+ identifier to build_external_ref.
+
+2005-03-01 David Edelsohn <edelsohn@gnu.org>
+
+ * config/rs6000/rs6000.md (cceq splitter): Use operand mode, not
+ CCEQ mode for branch_positive_comparison_operator test.
+ * config/rs6000/predicates (branch_comparison_operator): Revert to
+ define_predicate.
+ (scc_comparison_operator): Same.
+ (branch_positive_comparison_operator): Same.
+
+2005-03-01 Hans-Peter Nilsson <hp@axis.com>
+
+ * config/cris/cris.c (cris_eligible_for_epilogue_delay)
+ (cris_delay_slots_for_epilogue): Remove.
+ (save_last): Move into cris_target_asm_function_epilogue.
+ (cris_target_asm_function_epilogue): Remove tests for file being
+ NULL.
+ * config/cris/cris-protos.h (cris_eligible_for_epilogue_delay)
+ (cris_delay_slots_for_epilogue): Remove prototypes.
+ * config/cris/cris.h (DELAY_SLOTS_FOR_EPILOGUE)
+ (ELIGIBLE_FOR_EPILOGUE_DELAY): Do not define.
+
+2005-03-01 David Edelsohn <edelsohn@gnu.org>
+
+ * config/rs6000/predicates.md (branch_comparison_operator): Change
+ to define_special_predicate.
+ (scc_comparison_operator): Same.
+ (branch_positive_comparison_operator): Same.
+
+2005-03-01 Daniel Berlin <dberlin@dberlin.org>
+
+ * Makefile.in (tree-ssa-sink.o): New.
+ (OBJS-common): Add tree-ssa-sink.o.
+ * common.opt: Add -ftree-sink
+ * opts.c (decode_options): flag_tree_sink is set at O1 or higher.
+ * timevar.def (TV_TREE_SINK): new timevar.
+ * tree-flow.h (is_hidden_global_store): Prototype.
+ * tree-optimize.c (init_tree_optimization_passes): Add
+ pass_sink_code.
+ * tree-pass.h (pass_sink_code): New.
+ * tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Move checking
+ for non-obvious global store store to is_hidden_global_store, and
+ call that new function.
+ * tree-ssa-sink.c: New file.
+ * doc/invoke.texi: Document -fdump-tree-sink and -ftree-sink.
+ * doc/passes.texi: Document forward store motion.
+ * testsuite/gcc.dg/tree-ssa/ssa-sink-1.c: New test
+ * testsuite/gcc.dg/tree-ssa/ssa-sink-2.c: New test
+ * testsuite/gcc.dg/tree-ssa/ssa-sink-3.c: New test
+ * testsuite/gcc.dg/tree-ssa/ssa-sink-4.c: New test
+
+2005-03-01 Per Bothner <per@bothner.com>
+
+ * diagnostic.c (diagnostic_build_prefix): If USE_MAPPED_LOCATION
+ and we have a non-zero column-number, add it to the message.
+ Also factor out the diagnostic_kind_text.
+
+2005-03-01 Zdenek Dvorak <dvorakz@suse.cz>
+
+ * cfgloop.c (flow_loop_entry_edges_find, flow_loop_exit_edges_find,
+ flow_loop_pre_header_scan, flow_loop_pre_header_find,
+ flow_loop_scan): Removed.
+ (flow_loop_dump): Do not dump removed fields.
+ (flow_loop_free): Do not free removed fields.
+ (flow_loops_find): Flags argument removed. Do not call flow_loop_scan.
+ (loop_exit_edge_p): New function.
+ * cfgloop.h (struct loop): Removed fields pre_header, pre_header_edges,
+ num_pre_header_edges, entry_edges, num_entries, exit_edges,
+ num_exits, exits_doms.
+ (LOOP_TREE, LOOP_PRE_HEADER, LOOP_ENTRY_EDGES, LOOP_EXIT_EDGES,
+ LOOP_EDGES, LOOP_ALL): Removed.
+ (flow_loop_scan): Declaration removed.
+ (loop_exit_edge_p, mark_loop_exit_edges): Declare.
+ * cfgloopmanip.c (create_loop_notes): Do not pass flags to
+ flow_loops_find.
+ * ifcvt.c (mark_loop_exit_edges): Moved to cfgloopanal.c.
+ (if_convert): Call flow_loops_find and flow_loops_free
+ when calling mark_loop_exit_edges.
+ * cfgloopanal.c (mark_loop_exit_edges): Moved from
+ ifcvt.c. Removed the flow_loops_find, flow_loops_free and
+ free_dominance_info calls.
+ * loop-init.c (flow_loops_find): Ditto.
+ * passes.c (rest_of_handle_branch_prob): Ditto.
+ * lambda-code.c (perfect_nestify): Do not call flow_loops_find.
+ * loop-unroll.c (analyze_insns_in_loop): Do not use
+ EDGE_LOOP_EXIT.
+ * predict.c (predict_loops): Do not call flow_loop_scan.
+ Use get_loop_exit_edges.
+ (tree_estimate_probability): Do not pass flags to flow_loops_find.
+ * tree-if-conv.c (bb_with_exit_edge_p): Take loop as argument.
+ Do not use EDGE_LOOP_EXIT.
+ (tree_if_convert_cond_expr, if_convertible_modify_expr_p): Pass loop
+ to bb_with_exit_edge_p.
+ (if_convertible_loop_p): Do not call flow_loop_scan. Use
+ loop->single_exit. Do not use EDGE_LOOP_EXIT. Pass loop
+ to bb_with_exit_edge_p.
+ (combine_blocks): Pass loop to bb_with_exit_edge_p. Do not use
+ EDGE_LOOP_EXIT.
+ * tree-loop-linear.c (linear_transform_loops): Do not call
+ flow_loop_scan. Use loop->single_exit.
+ * tree-vect-analyze.c (vect_analyze_operations): Use loop->single_exit.
+ (vect_analyze_loop_form): Do not call flow_loop_scan.
+ * tree-vect-transform.c (vect_update_ivs_after_vectorizer): Use
+ loop->single_exit.
+ (vect_do_peeling_for_loop_bound): Use loop_preheader_edge and
+ loop->single_exit.
+ * tree-vectorizer.c (slpeel_update_phis_for_duplicate_loop,
+ slpeel_make_loop_iterate_ntimes, slpeel_can_duplicate_loop_p,
+ slpeel_tree_duplicate_loop_to_edge_cfg,
+ slpeel_verify_cfg_after_peeling, slpeel_tree_peel_loop_to_edge):
+ Use loop_preheader_edge and loop->single_exit. Do not call
+ flow_loop_scan.
+
+2005-03-01 Nick Clifton <nickc@redhat.com>
+
+ * config/arm/arm.c (thumb_find_work_register): Check all of the
+ argument registers to see if they are free, and a couple of
+ special cases where the last argument register but can be proved
+ to be available during the function's prologue.
+ (print_multi_reg, arm_compute_save_reg0_reg12_mask,
+ output_return_instruction, emit_multi_reg_push, thumb_pushpop,
+ thumb_unexpanded_epilogue): Use unsigned long as the type for the
+ register bit-mask.
+ (thumb_compute_save_reg_mask): Likewise. Also use
+ thumb_find_work_register() to ensure that there is agreement about
+ which work register is going to be used in the prologue.
+ (thumb_output_function_prologue): Use unsigned long as the type
+ for the register bit-mask. Also delay pushing the link register if
+ other high registers are going to be pushed.
+ (thumb_compute_save_reg_mask, emit_multi_reg_push,
+ print_multi-reg, number_of_first_bit_set, thumb_pushpop): Remove
+ redundant prototypes.
+
+2005-02-28 John David Anglin <dave.anglin#nrc-cnrc.gc.ca>
+
+ PR target/19819
+ * pa.h (GO_IF_LEGITIMATE_ADDRESS): Allow allow hard registers during
+ and after reload in REG+REG indexed addresses without REG_POINTER
+ set in the base and not set in the index.
+
+2005-02-28 Kaz Kojima <kkojima@gcc.gnu.org>
+
+ * config/sh/linux.h (MD_EXEC_PREFIX, MD_STARTFILE_PREFIX):
+ Don't undefine here.
+ (HANDLE_PRAGMA_PACK_PUSH_POP): Delete.
+ (NO_IMPLICIT_EXTERN_C, CPLUSPLUS_CPP_SPEC): Likewise.
+ (TARGET_OS_CPP_BUILTINS): Use LINUX_TARGET_OS_CPP_BUILTINS.
+ (LIB_SPEC, LINK_EH_SPEC, STARTFILE_SPEC, ENDFILE_SPEC,
+ LINK_GCC_C_SEQUENCE_SPEC, USE_LD_AS_NEEDED, TARGET_C99_FUNCTIONS):
+ Delete.
+ * config.gcc (sh*-*-linux*): Use config/linux.h.
+
+2005-02-28 Dale Johannesen <dalej@apple.com>
+ Stan Shebs <shebs@apple.com>
+
+ Rewrite of 64-bit Darwin structure-by-value pass/return.
+ * config/rs6000/rs6000.h (CUMULATIVE_ARGS): New fields
+ intoffset, use_stack, named.
+ * config/rs6000/rs6000.c (rs6000_darwin64_function_arg): Remove.
+ (rs6000_darwin64_record_arg_advance_flush): New.
+ (rs6000_darwin64_record_arg_advance_recurse): New.
+ (rs6000_darwin64_record_arg_flush): New.
+ (rs6000_darwin64_record_arg_recurse): New.
+ (rs6000_darwin64_record_arg): New.
+ (rs6000_return_in_memory): Remove AGGREGATE_TYPE_P check.
+ (function_arg_boundary): Handle 128-bit aligned structs.
+ (function_arg_advance): Rewrite darwin64 struct handling.
+ (function_arg): Call rs6000_darwin64_record_arg.
+ (function_arg_partial_nregs): Handle darwin64 structs.
+ (rs6000_darwin64_function_value): Remove.
+ (rs6000_function_value): Call rs6000_darwin64_record_arg.
+
+2005-02-28 Roger Sayle <roger@eyesopen.com>
+
+ PR tree-optimization/20216
+ * tree-chrec.c (tree_fold_factorial): Delete.
+ (tree_fold_binomial): Change argument list to take a return type
+ and change the type of K to unsigned int. Rewrite to avoid explicit
+ evaluation of factorials, and (recursively) calling fold to perform
+ compile-time arithmetic. Return NULL on (internal) overflow.
+ (chrec_evaluate): Change type of K to an unsigned int. Avoid
+ calling tree_fold_binomial unnecessarily. Return chrec_dont_know
+ if any intermediate calculation overflows.
+ (chrec_apply): Update call to chrec_evaluate.
+
+2005-02-28 James E Wilson <wilson@specifixinc.com>
+
+ * config/mips/mips.h (NO_PROFILE_COUNTERS): Define.
+
+2005-02-28 Joseph S. Myers <joseph@codesourcery.com>
+
+ PR c/20245
+ * c-parser.c (c_parser_compound_statement): Return error_mark_node
+ instead of NULL_TREE on error.
+
2005-02-28 David Edelsohn <edelsohn@gnu.org>
* config/rs6000/rs6000.c (EASY_VECTOR_15): Remove.
("*andqi_lowpart", "iorsi3", "iorhi3", "iorqi3", "uminsi3"):
Insert spaces in constraints to align alternatives vertically for
readability.
- ("cmphi"): Ditto. Add separate alternative for operand 0 "Q>",
+ ("cmphi"): Ditto. Add separate alternative for operand 0 "r",
operand 1: "M".
2005-02-27 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
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