OSDN Git Service

2006-02-02 Paolo Bonzini <bonzini@gnu.org>
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
index 7990d2f..078ea9d 100644 (file)
@@ -1,3 +1,542 @@
+2006-02-02  Paolo Bonzini  <bonzini@gnu.org>
+
+       * tree-flow-inline.h (bsi_after_labels): Rewrite, return
+       what its name says.
+       * lambda-code.c (perfect_nestify): Use bsi_insert_before on
+       bsi_after_labels iterator.
+       * tree-if-conv.c (find_phi_replacement_condition,
+       replace_phi_with_cond_modify_expr): Likewise.
+       * tree-scalar-evolution.c (scev_const_prop): Likewise.
+       * tree-ssa-loop-ivopts.c (compute_phi_arg_on_exit): Likewise.
+
+2006-02-02  Diego Novillo  <dnovillo@redhat.com>
+
+       * tree-inline.c (copy_tree_r): Also copy OMP_CLAUSE nodes.
+
+2006-02-02  Diego Novillo  <dnovillo@redhat.com>
+
+       PR 25990
+       * tree-cfg.c (move_block_to_fn): Clear out the basic block
+       array after growing it.
+
+2006-02-01  Steve Ellcey  <sje@cup.hp.com>
+
+       PR middle-end/24901
+       * fold-const.c (fold_checksum_tree): Change type of buf.
+
+2006-02-01  Bernd Schmidt  <bernd.schmidt@analog.com>
+
+       * reload.c (push_secondary_reload): Initialize t_icode.
+
+2006-02-01  Jakub Jelinek  <jakub@redhat.com>
+
+       * config/rs6000/sysv4.h (SUBTARGET_OVERRIDE_OPTIONS): For
+       -msoft-float -mlong-double-128 only issue a warning, but don't
+       swich to DFmode long double.
+
+2006-02-01  Hans-Peter Nilsson  <hp@axis.com>
+
+       * cse.c (fold_rtx) <case RTX_COMM_COMPARE, RTX_COMPARE>: When arg1
+       has a constant equivalent, iterate over equivalents for arg0,
+       calling simplify_relational_operation and if there's a result
+       cheaper than X, apply fold_rtx and return the result.
+
+2006-02-01  Jan Hubicka  <jh@suse.cz>
+
+       * opts.c (no_unit_at_a_time_default): New global variable.
+       (decode_options): Use it.
+       * opts.h (no_unit_at_a_time_default): Declare.
+
+2006-02-01  Paul Brook  <paul@codesourcery.com>
+
+       * function.c (assign_parm_setup_reg): Use function argument promotion
+       rules.
+       * expr.c (expand_expr_real_1): Use function argument promotion rules
+       for PARM_DECLs.
+
+2006-02-01  Steve Ellcey  <sje@cup.hp.com>
+
+       * gcc.c (process_command): Change j to 'unsigned int'.
+
+2006-01-31  Andrew Pinski  <pinskia@physics.uc.edu>
+
+       PR middle-end/26001
+       * expr.c (expand_expr_real_1) <case ARRAY_REF>:
+       Use the corrected index for the character
+       out of the string constant.
+
+2006-01-31  Andrew Pinski  <pinskia@physics.uc.edu>
+
+       * mode-switching.c (optimize_mode_switching): Fix size
+       allocated for bb_info[n_entities].
+
+2006-01-31  Andrew Pinski  <pinskia@physics.uc.edu>
+
+       * gcc.c (main): Correct type that is allocated for
+       explicit_link_files.
+
+2006-01-31  Jakub Jelinek  <jakub@redhat.com>
+
+       * config/s390/s390.c (init_alignment_context): Set
+       ALIAS_SET_MEMORY_BARRIER on the MEM.
+       * config/sparc/sparc.c (sparc_expand_compare_and_swap_12): Likewise.
+
+2006-01-31  Uttam Pawar  <uttamp@us.ibm.com>
+
+       PR middle-end/25933
+       * loop-unroll.c (unroll_loop_runtime_iterations): Free
+       dom_bbs pointer.
+       * tree-ssa-live.c (type_var_init): Allocate bitmap after
+       call to tpa_init.
+
+2006-01-31  Marcin Dalecki  <martin@dalecki.de>
+
+       * tree-vrp.c: Use XNEW/XCNEW allocation wrappers.
+       * regrename.c: Ditto.
+       * tree-ssa-loop-im.c: Ditto.
+       * tree-dump.c: Ditto.
+       * tree-complex.c: Ditto.
+       * genrecog.c: Ditto.
+       * tree-ssa-threadupdate.c: Ditto.
+       * tracer.c: Ditto.
+       * java/class.c: Ditto.
+       * java/jcf-parse.c: Ditto.
+       * java/resource.c: Ditto.
+       * java/except.c: Ditto.
+       * java/jvspec.c: Ditto.
+       * java/jcf-write.c: Ditto.
+       * java/jcf-path.c: Ditto.
+       * java/gjavah.c: Ditto.
+       * java/zextract.c: Ditto.
+       * java/jcf-io.c: Ditto.
+       * java/jcf.h: Ditto.
+       * java/buffer.c: Ditto.
+       * java/lang.c: Ditto.
+       * java/parse-scan.y: Ditto.
+       * java/lex.c: Ditto.
+       * java/lex.h: Ditto.
+       * cfgloopmanip.c: Ditto.
+       * postreload-gcse.c: Ditto.
+       * tree-ssa-loop-manip.c: Ditto.
+       * postreload.c: Ditto.
+       * tree-ssa-loop-ch.c: Ditto.
+       * loop.c: Ditto.
+       * ipa-cp.c: Ditto.
+       * cppspec.c: Ditto.
+       * diagnostic.c: Ditto.
+       * final.c: Ditto.
+       * genoutput.c: Ditto.
+       * gcc.c: Ditto.
+       * cfghooks.c: Ditto.
+       * cfgloopanal.c: Ditto.
+       * objc/objc-act.c: Ditto.
+       * gcov.c: Ditto.
+       * genextract.c: Ditto.
+       * genautomata.c: Ditto.
+       * pretty-print.c: Ditto.
+       * genemit.c: Ditto.
+       * cgraphunit.c: Ditto.
+       * flow.c: Ditto.
+       * df-scan.c: Ditto.
+       * haifa-sched.c: Ditto.
+       * dominance.c: Ditto.
+       * dbxout.c: Ditto.
+       * tree-ssa-loop-ivopts.c: Ditto.
+       * df-core.c: Ditto.
+       * mode-switching.c: Ditto.
+       * modulo-sched.c: Ditto.
+       * graph.c: Ditto.
+       * ipa-pure-const.c: Ditto.
+       * cse.c: Ditto.
+       * fix-header.c: Ditto.
+       * web.c: Ditto.
+       * tree-stdarg.c: Ditto.
+       * ipa-utils.c: Ditto.
+       * loop-init.c: Ditto.
+       * ipa-inline.c: Ditto.
+       * cfganal.c: Ditto.
+       * global.c: Ditto.
+       * alloc-pool.c: Ditto.
+       * dwarf2out.c: Ditto.
+       * opts.c: Ditto.
+       * genattrtab.c: Ditto.
+       * tree-ssa-loop-ivcanon.c: Ditto.
+       * predict.c: Ditto.
+       * timevar.c: Ditto.
+       * lcm.c: Ditto.
+       * fortran/gfortranspec.c: Ditto.
+       * regmove.c: Ditto.
+       * local-alloc.c: Ditto.
+       * langhooks.c: Ditto.
+       * function.c: Ditto.
+       * tree-vectorizer.c: Ditto.
+       * gcse.c: Ditto.
+       * ipa-type-escape.c: Ditto.
+       * alias.c: Ditto.
+       * tree-if-conv.c: Ditto.
+       * profile.c: Ditto.
+       * ipa.c: Ditto.
+       * tree-data-ref.c: Ditto.
+       * loop-unroll.c: Ditto.
+       * treelang/treetree.c: Ditto.
+       * calls.c: Ditto.
+       * bt-load.c: Ditto.
+       * ggc-common.c: Ditto.
+       * except.c: Ditto.
+       * coverage.c: Ditto.
+       * cselib.c: Ditto.
+       * tree-cfgcleanup.c: Ditto.
+       * tree-ssa-pre.c: Ditto.
+       * cfgcleanup.c: Ditto.
+       * loop-invariant.c: Ditto.
+       * loop-iv.c: Ditto.
+       * ipa-prop.c: Ditto.
+       * print-tree.c: Ditto.
+       * conflict.c: Ditto.
+       * ggc-page.c: Ditto.
+       * sched-deps.c: Ditto.
+       * regclass.c: Ditto.
+       * tree-object-size.c: Ditto.
+       * combine.c: Ditto.
+       * bb-reorder.c: Ditto.
+       * resource.c: Ditto.
+       * var-tracking.c: Ditto.
+       * cfgloop.c: Ditto.
+       * df-problems.c: Ditto.
+       * reg-stack.c: Ditto.
+       * tlink.c: Ditto.
+       * gccspec.c: Ditto.
+       * sched-rgn.c: Ditto.
+       * tree-ssa-structalias.c: Ditto.
+       * tree-ssa-reassoc.c: Ditto.
+       * config/darwin-c.c: Ditto.
+       * config/darwin.c: Ditto.
+       * config/arm/arm.c: Ditto.
+       * cfgrtl.c: Ditto.
+       * collect2.c: Ditto.
+       * reload1.c: Ditto.
+
+2006-01-31  Nicolas Pitre  <nico@cam.org>
+
+       * arm.md (smaxsi3): Make aware of smax_m1.
+       (smax_m1): New.
+
+2006-01-31  Nathan Sidwell  <nathan@codesourcery.com>
+
+       * gcc/config/m68k/lb1sf68.asm: Use moveq to load small constants.
+
+2006-01-31  Richard Guenther  <rguenther@suse.de>
+
+       * doc/invoke.texi (-msselibm): Document.
+       * target.h (expand_library_builtin): New target hook.
+       * builtins.c (expand_builtin): Use expand_library_builtin.
+       (default_expand_library_builtin): New function.
+       * gcc.c (LINK_GCC_MATH_SPEC): Define.
+       (LINK_COMMAND_SPEC): Handle %(link_gcc_math).
+       (link_gcc_math_spec): Declare.
+       (static_specs): Add link_gcc_math_spec.
+       * expr.h (default_expand_library_builtin): Declare.
+       * target-def.h (TARGET_EXPAND_LIBRARY_BUILTIN): Define.
+       (TARGET_INITIALIZER): Add TARGET_EXPAND_LIBRARY_BUILTIN.
+       * config/i386/i386.h: Provide LINK_GCC_MATH_SPEC.
+       * config/i386/i386.opt (msselibm): New target option.
+       * config/i386/i386.c (ix86_builtin_function_variants): New array.
+       (ix86_init_sse_abi_builtins): New function.
+       (ix86_expand_library_builtin): Likewise.
+       (TARGET_EXPAND_LIBRARY_BUILTIN): Define.
+       (override_options): Handle error conditions wrt -msselibm.
+       (ix86_builtins): Add function codes for SSE2 ABI builtins.
+       (ix86_init_builtins): Call ix86_init_sse_abi_builtins.
+       * doc/extend.texi (__builtin_sse2_*): Document new target specific
+       builtins.
+
+2006-01-31  Richard Guenther  <rguenther@suse.de>
+       Paolo Bonzini  <bonzini@gnu.org>
+
+       * doc/install.texi (--disable-libgcc-math): Document.
+
+2006-01-30  Marcin Dalecki  <martin@dalecki.de>
+
+       * expr.h (expand_normal): new inline function.
+       * builtins.c: use it, use EXPAND_NORMAL explicitely.
+       * dojump.c: use it.
+       * dwarf2out.c: use it.
+       * expr.c: use it.
+       * calls.c: use it.
+       * expmed.c: use it.
+       * except.c: use it.
+       * config/sparc/sparc.c: use it.
+       * config/i386/i386.c: use it.
+       * config/rs6000/rs6000.c: use it.
+       * config/arm/arm.c: use it.
+       * config/mips/mips.c: use it.
+       * stmt.c: use it, use EXPAND_NORMAL explicitely.
+
+2006-01-30  Roger Sayle  <roger@eyesopen.com>
+
+       * config/i386/cygwin.h (GCC_DRIVER_HOST_INITIALIZATION): Cast
+       argv to the appropriate type.
+
+2006-01-30  Zdenek Dvorak <dvorakz@suse.cz>
+
+       * tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Remove
+       unreachable code.
+
+2006-01-30  Ulrich Weigand  <uweigand@de.ibm.com>
+
+       PR target/26018
+       * config/s390/s390.c (struct machine_function): New flag
+       decomposed_literal_pool_addresses_ok_p.
+       (s390_reorg): Set it before final stage of literal pool transforms.
+       (s390_decompose_address): Only accept displacements of the form
+       (minus (label_ref ...) (label_ref ...)) if that flag is set.
+
+2006-01-30  Carlos O'Donell  <carlos@codesourcery.com>
+
+       * optabs.c (prepare_cmp_insn): If unbaised and unsigned then bias
+       the comparison routine return.
+
+2006-01-30  Michael Matz  <matz@suse.de>
+
+       * global.c (find_reg): Only evict for global regs.
+       Take n_refs into account and dump more info.
+
+2006-01-30  J"orn Rennecke <joern.rennecke@st.com>
+
+       PR target/14798:
+       * sh.c (pragma_interrupt, trap_exit, sp_switch): Remove variable.
+       (pragma_trap, pragma_nosave_low_regs): Likewise.
+       (current_function_anonymous_args): Likewise.
+       (sh_deferred_function_attributes): New variable.
+       (sh_deferred_function_attributes_tail): Likewise.
+       (print_operand): For '@', look up trap_exit attribute.
+       (calc_live_regs): Look up trapa_handler attribute.  For trapa
+       handlers, save/restore fpscr, but don't do any other
+       interrupt-specific saves.
+       Don't save r0..r7 if the nosave_low_regs attribute is in effect.
+       Fix check for partially saved registers to check for SHmedia.
+       (sh_expand_prologue, sh_expand_epilogue): Look up sp_switch attribute.
+       (sh_output_function_epilogue): Don't clear any of the removed
+       variables.
+       (sh_insert_attributes): Don't check pragma_interrupt.
+       Insert deferred attributes.  Check that interrupt attribute is
+       present for other attributes that require its presence.
+       (sh_attribute_table): Add new attributes trapa_handler and
+       nosave_low_regs.
+       (sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute):
+       Don't check for pragma_interrupt.  Don't store argument.
+       * sh.h (pragma_interrupt, sp_switch): Don't declare.
+       (sh_deferred_function_attributes): Declare.
+       (sh_deferred_function_attributes_tail): Likewise.
+       * sh.md (sp_switch_1): Add operand.  Change generator caller.
+       (sh_pr_interrupt, sh_pr_trapa, sh_pr_nosave_low_regs): Remove.
+       (*return_i): Don't use when trap_exit attribute is in effect.
+       (*return_trapa): New insn pattern.
+       * sh-c.c: New file.
+       * config.gcc (sh[123456ble]*-* | sh-*-*): New trailer stanza,
+       setting c_target_objs and cxx_target_objs.
+       * t-sh: Add rule for sh-c.o.
+
+2006-01-30  Richard Guenther  <rguenther@suse.de>
+
+       PR c++/23372
+       * gimplify.c (gimplify_target_expr): Handle easy cases
+       without creating a temporary.
+
+2006-01-30  Nathan Sidwell  <nathan@codesourcery.com>
+
+       * vec.h (safe_grow): Remove duplicated line.
+
+2006-01-29  Diego Novillo  <dnovillo@redhat.com>
+
+       PR 25874
+       * omp-low.c (execute_expand_omp): Move CFG cleanup code ...
+       (expand_omp): ... here.
+       (expand_omp_parallel): Only remove barriers for combined
+       parallel+workshare constructs.
+
+2006-01-29  Eric Botcazou  <ebotcazou@adacore.com>
+
+       Revert
+
+       2005-11-09  Eric Botcazou  <ebotcazou@adacore.com>
+       * tree.c (build_qualified_type): Chain the new type to the original
+       type's TYPE_NEXT_PTR_TO or TYPE_NEXT_REF_TO linked lists if it is
+       a POINTER_TYPE or a REFERENCE_TYPE respectively.
+       (build_pointer_type_for_mode): Only return unqualified types.
+       (build_reference_type_for_mode): Likewise.
+
+2006-01-29  Gabriel Dos Reis  <gdr@integgrable-solutions.net>
+
+       * configure.ac (cxx_compat_warn): Set if -Wc++-compat is supported.
+       * Makefile.in (CXX_COMPAT_WARN): Define.
+       * configure: Regenerate.
+
+2006-01-29  Dorit Nuzman  <dorit@il.ibm.com>
+
+       PR tree-opt/25911
+       * tree-vect-patterns.c (vect_recog_dot_prod_pattern): Change assert
+       to an if check.
+
+2006-01-29  Gabriel Dos Reis  <gdr@integrable-solutions.net>
+
+       * toplev.c: Fix thinko.
+
+2006-01-29  Gabriel Dos Reis  <gdr@integrable-solutions.net>
+           Marcin Dalecki  <martin@dalecki.de>
+
+       * toplev.c (floor_log2, exact_log2): Don't define if __cplusplus.
+       (push_srcloc): Use XNEW.
+       (init_asm_output, default_get_pch_validity): Use XNEWVEC.
+
+2006-01-29  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+       * df-core.c (df_set_blocks): Deleted all variable.
+
+2006-01-28  Ian Lance Taylor  <ian@airs.com>
+
+       * cgraphunit.c (cgraph_assemble_pending_functions): Call
+       cgraph_output_pending_asms.
+
+2006-01-28  Zack Weinberg  <zackw@panix.com>
+
+       * c.opt: Add -W(no-)overlength-strings.
+       * doc/invoke.texi: Document it.
+       * c-opts.c (c_common_handle_option): -pedantic implies
+       -Woverlength-strings, if not explicitly disabled already.
+       (c_common_post_options): -Woverlength-strings defaults to off, and
+       is always off for C++.
+       * c-common.c (fix_string_type): Issue warning about strings longer
+       than is portable only if warn_overlength_strings.  Rearrange code
+       a little for clarity.
+       * configure.in: Check for -Wno-overlength-strings as well before
+       enabling -pedantic in stage 1.
+       * Makefile.in (STRICT2_WARN): Add -Wno-overlength-strings.
+       (gcc.o-warn, insn-automata.o-warn, build/gencondmd.o-warn): Delete.
+
+       * genconditions.c (write_header, write_one_condition)
+       (write_conditions, write_writer): Consolidate very long strings
+       that were broken up to fit in C89 portable limit.  Don't use
+       printf when fputs will do.
+
+2006-01-28  Adam Nemet  <anemet@caviumnetworks.com>
+
+       * combine.c (simplify_comparison <AND>): Check
+       TRULY_NOOP_TRUNCATION before start using a subreg.
+
+       * config/mips/mips.md (*branch_zero<mode>,
+       *branch_zero<mode>_inverted, *branch_equality<mode>,
+       *branch_equality<mode>_inverted, *branch_equality<mode>_mips16):
+       Remove mode check from comparisons.
+
+2006-01-28  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+       * config/mips/mips-protos.h (mips_set_live_on_entry): Deleted.
+
+2006-01-28  Kazu Hirata  <kazu@codesourcery.com>
+
+       * expmed.c (const_mult_add_overflow_p): Remove.
+       * expr.h: Remove the prototype for const_mult_add_overflow_p.
+
+       * recog.c (validate_replace_rtx_subexp): Remove.
+       * recog.h: Remove the prototype for
+       validate_replace_rtx_subexp.
+
+       * integrate.h: Remove the prototype for
+       copy_decl_for_inlining.
+       * rtl.h: Remove the prototype for mark_constant_function.
+       * tree-vectorizer.h: Remove the prototype for
+       vect_strip_conversion.
+
+       * modulo-sched.c (create_partial_schedule,
+       free_partial_schedule, reset_partial_schedule): Make them
+       static.
+
+       * hooks.c (hook_bool_rtx_int_false): Remove.
+       * hooks.h: Remove the prototype for hook_bool_rtx_int_false.
+
+2006-01-28  David Edelsohn  <edelsohn@gnu.org>
+
+       * config/rs6000/aix43.h (SUBTARGET_OVERRIDE_OPTIONS): -msoft-float
+       and -mlong-double-128 are incompatible.
+       * config/rs6000/aix52.h (SUBTARGET_OVERRIDE_OPTIONS): Same.
+       * config/rs6000/t-aix43 (LIB2FUNCS_EXTRA): Add ppc64-fp.c.
+       (TARGET_LIBGCC2_CFLAGS): Define.
+       * config/rs6000/t-aix52 (LIB2FUNCS_EXTRA): Same.
+       (TARGET_LIBGCC2_CFLAGS): Same.
+       * config/rs6000/ppc64-fp.c: Compile for 64-bit AIX.
+
+2006-01-28  Kazu Hirata  <kazu@codesourcery.com>
+
+       PR c/19606.
+       * c-typeck.c (build_binary_op): Perform implicit casts of
+       operands before shortening them.
+
+       * cfgloopmanip.c (split_loop_bb): Remove.
+       * cfgloop.h: Remove the prototype for split_loop_bb.
+
+       * cfgloop.c (flow_loop_outside_edge_p): Remove.
+       * cfgloop.h: Remove the prototype for
+       flow_loop_outside_edge_p.
+
+       * emit-rtl.c (init_virtual_regs): Make it static.
+       * function.h: Remove the prototype for init_virtual_regs.
+
+       * recog.c (peephole2_optimize): Make it static.
+       * recog.h: Remove the prototype for peephole2_optimize.
+
+2006-01-27  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * df-scan.c (df_record_entry_block_defs): Check if
+       INCOMING_RETURN_ADDR_RTX is defined.
+
+2006-01-27  Daniel Berlin  <dberlin@dberlin.org>
+           Kenneth Zadeck <zadeck@naturalbridge.com>
+
+       PR rtl-optimization/24762
+       * doc/tm.texi: Added TARGET_EXTRA_LIVE_ON_ENTRY.
+       * targhooks.c (hook_void_bitmap): New hook prototype.
+       * targhoohs.h (hook_void_bitmap): Ditto.
+       * bitmap.h (bitmap_head_def): Moved to coretypes.h.
+       * coretypes.h (bitmap_head_def): Moved from bitmap.h.
+       * target.h (live_on_entry): New function pointer.
+       * df-scan.c (df_all_hard_regs): Removed.
+       (df_scan_dump, df_hard_reg_init): Removed df_all_hard_regs.
+       (df_scan_free_internal): Added df->entry_block_defs.
+       (df_scan_alloc): Ditto.
+       (df_scan_dump): Ditto.
+       (df_uses_record): Plumbed flag field properly thru calls.
+       Record EH_RETURN_DATA_REGNO in eh blocks unconditionally.
+       This part fixes PR24762.
+       (df_bb_refs_record): Added code to make the frame and arg
+       pointers live in EH blocks.
+       (df_refs_record): Added call to df_record_entry_block_defs.
+       (df_record_entry_block_defs): New function.
+       * df-core.c: Added comments to describe new artifical defs.
+       * df.h (DF_REF_DIES_AFTER_THIS_USE): New flag in enum df_ref_flags.
+       (entry_block_defs): New field in struct df.
+       (df_all_hard_regs): Deleted.
+       * target-def.h: Added TARGET_EXTRA_LIVE_ON_ENTRY.
+       * df-problems.c (df_ru_bb_local_compute_process_def):
+       Added code to handle artifical defs in the entry to a function.
+       (df_ru_bb_local_compute): Ditto.
+       (df_rd_bb_local_compute_process_def):  Ditto.
+       (df_rd_bb_local_compute): Ditto.
+       (df_lr_bb_local_compute): Ditto.
+       (df_ur_bb_local_compute): Ditto.
+       (df_urec_bb_local_compute):  Ditto.
+       (df_chain_create_bb):  Ditto.
+       (df_ur_local_finalize): Removed entry.
+       (df_urec_init): Ditto.
+       (df_urec_local_finalize): Ditto.
+       (df_ri_bb_compute): Added detection of last use of pseudos.
+       * Makefile.in (df-scan.o): Updated dependencies.
+       * config/mips/mips-protos.h (mips_set_live_on_entry): Added.
+       * config/mips/mips.c (mips_set_live_on_entry): Added.
+       * config/mips/mips.c (TARGET_EXTRA_LIVE_ON_ENTRY): Added value
+       for target hook.
+       * dce.c (marked_insn_p): Added code to handle artifical defs.
+
 2006-01-27  H.J. Lu  <hongjiu.lu@intel.com>
 
        * config/i386/emmintrin.h (_mm_cvtsd_f64): Add missing Intel