gcc/ChangeLog

   1 2005-01-10  Kazu Hirata  <kazu@cs.umass.edu>
   2
   3         * tree-vectorizer.c, tree.def: Fix comment typos.
   4
   5 2005-01-10  Mark Dettinger  <dettinge@de.ibm.com>
   6
   7         * config/s390/s390.c (struct processor_costs): 4 new fields:
   8         ddbr, ddr, debr, der.
   9         (s390_rtx_costs): More precise handling of divide instructions.
  10
  11 2005-01-10  David Edelsohn  <edelsohn@gnu.org>
  12
  13         * config/rs6000/t-aix43 (BOOT_LDFLAGS): Define.
  14
  15 2005-01-10  Jan Beulich  <jbeulich@novell.com>
  16
  17         * config/ia64/ia64.c (ia64_in_small_data_p): Also handle the section
  18         names resulting from -ffunction-sections/-fdata-sections and linkonce
  19         ones.
  20         * varasm.c (default_section_type_flags_1): Also set SECTION_SMALL
  21         based on the section name. Rearrange the section name comparison logic
  22         slightly so that each section name is compared against at most once.
  23
  24 2005-01-10  Ben Elliston  <bje@au.ibm.com>
  25
  26         * doc/invoke.texi (Code Gen Options): Add PowerPC to the list of
  27         targets for which -fPIC reduces limitations on the GOT size.
  28
  29 2005-01-09  Falk Hueffner  <falk@debian.org>
  30
  31         * fold-const.c (fold): Also handle EXACT_DIV_EXPR when folding
  32         X/C1 cmpop C2.
  33
  34 2005-01-09  David Edelsohn  <edelsohn@gnu.org>
  35
  36         PR target/18720
  37         * collect2.c (main): Set aixrtl_flag for -brtl option.
  38         (resolve_lib_name): Search for .so file extension before .a
  39         if aixrtl_flag set.
  40
  41 2005-01-09  Dorit Naishlos  <dorit@il.ibm.com>
  42
  43         * tree-vectorizer.c (vect_enhance_data_refs_alignment): Add dump prints.
  44         (vect_analyze_data_refs_alignment): Add dump prints.
  45
  46 2005-01-09  Ira Rosen  <irar@il.ibm.com>
  47
  48         * tree-vectorizer.c (vect_analyze_offset_expr): Use
  49         expr_invariant_in_loop_p.
  50         Initialize outputs first thing in the function.
  51         (vect_update_ivs_after_vectorizer): Call initial_condition_in_loop_num.
  52         (vect_is_simple_iv_evolution): Call initial_condition_in_loop_num.
  53         (vect_analyze_pointer_ref_access): Check that the initial condition of
  54         the access function is loop invariant.
  55
  56 2005-01-09  Richard Henderson  <rth@redhat.com>
  57
  58         * config/i386/i386.c (bdesc_2arg): Update names for mmx_ prefixes.
  59         (ix86_expand_builtin): Likewise.  Frob MASKMOVQ wrt the input mem
  60         just like MASKMOVDQU.  Return plain zero for MMX_ZERO.
  61         * config/i386/i386.md (MMXMODEI, mov<MMXMODEI>,
  62         mov<MMXMODEI>_internal_rex64, mov<MMXMODEI>_internal, movv2sf,
  63         movv2sf_internal_rex64, movv2sf_internal, MMXMODE,
  64         movmisalign<MMXMODE>, mmx_pmovmskb, mmx_maskmovq, mmx_maskmovq_rex,
  65         sse_movntdi, addv8qi3, addv4hi3, addv2si3, mmx_adddi3, ssaddv8qi3,
  66         ssaddv4hi3, usaddv8qi3, usaddv4hi3, subv8qi3, subv4hi3, subv2si3,
  67         mmx_subdi3, sssubv8qi3, sssubv4hi3, ussubv8qi3, ussubv4hi3,
  68         mulv4hi3, smulv4hi3_highpart, umulv4hi3_highpart, mmx_pmaddwd,
  69         sse2_umulsidi3, mmx_iordi3, mmx_xordi3, mmx_anddi3, mmx_nanddi3,
  70         mmx_uavgv8qi3, mmx_uavgv4hi3, mmx_psadbw, mmx_pinsrw, mmx_pinsrw,
  71         mmx_pextrw, mmx_pshufw, eqv8qi3, eqv4hi3, eqv2si3, gtv8qi3, gtv4hi3,
  72         gtv2si3, umaxv8qi3, smaxv4hi3, uminv8qi3, sminv4hi3, ashrv4hi3,
  73         ashrv2si3, lshrv4hi3, lshrv2si3, mmx_lshrdi3, ashlv4hi3, ashlv2si3,
  74         mmx_ashldi3, mmx_packsswb, mmx_packssdw, mmx_packuswb, mmx_punpckhbw,
  75         mmx_punpckhwd, mmx_punpckhdq, mmx_punpcklbw, mmx_punpcklwd,
  76         mmx_punpckldq, emms, addv2sf3, subv2sf3, subrv2sf3, gtv2sf3, gev2sf3,
  77         eqv2sf3, pfmaxv2sf3, pfminv2sf3, mulv2sf3, femms, pf2id, pf2iw,
  78         pfacc, pfnacc, pfpnacc, pi2fw, floatv2si2, pfrcpv2sf2, pfrcpit1v2sf3,
  79         pfrcpit2v2sf3, pfrsqrtv2sf2, pfrsqit1v2sf3, pmulhrwv4hi3, pswapdv2si2,
  80         pswapdv2sf2): Move to mmx.md; rename as necessary with leading
  81         mmx_ prefix.
  82         (mmx_clrdi, pavgusb): Remove.
  83         (ldmxcsr, stmxcsr, sfence, sfence_insn): Move to sse.md; rename
  84         with leading sse_ prefix.
  85         * config/i386/sse.md: Receive them.
  86         * config/i386/mmx.md: New file.
  87         (MMXMODE12, MMXMODE24, mmxvecsize): New.
  88         (subrv2sf3): Turn into expander for normal subtraction.
  89         (mmx_addv2sf3, mmx_mulv2sf3, mmx_smaxv2sf3, mmx_sminv2sf3,
  90         mmx_eqv2sf3, mmx_mulv4hi3, mmx_smulv4hi3_highpart,
  91         mmx_umulv4hi3_highpart, mmx_pmaddwd, mmx_pmulhrwv4hi3, sse2_umulsidi3,
  92         mmx_umaxv8qi3, mmx_smaxv4hi3, mmx_uminv8qi3, mmx_sminv4hi3): Mark
  93         commutative; use ix86_binary_operator_ok.
  94         (mmx_add<MMXMODEI>3, mmx_ssadd<MMXMODE12>3, mmx_usadd<MMXMODE12>3,
  95         mmx_sub<MMXMODEI>3, mmx_sssub<MMXMODE12>3, mmx_ussub<MMXMODE12>3
  96         mmx_ashr<MMXMODE24>3, mmx_lshr<MMXMODE23>3, mmx_ashl<MMXMODE24>3
  97         mmx_eq<MMXMODEI>3, mmx_gt<MMXMODEI>3, mmx_and<MMXMODEI>3,
  98         mmx_nand<MMXMODEI>3, mmx_ior<MMXMODEI>3, mmx_xor<MMXMODEI>3):
  99         Macroize from existing patterns; use ix86_binary_operator_ok.
 100         (mmx_packsswb, mmx_packssdw, mmx_packuswb): Add memory alternative.
 101         (mmx_punpckhbw, mmx_punpcklbw, mmx_punpckhwd, mmx_punpcklwd,
 102         mmx_punpckhdq, mmx_punpckhdq, mmx_punpckldq): Likewise.  Model
 103         with vec_select+vec_concat.
 104         (mmx_pshufw, mmx_pshufw_1): Likewise.
 105         (mmx_uavgv8qi3): Merge pavgusb.  Model correcty.
 106         (mmx_uavgv4hi3): Model correctly.
 107         * config/i386/mmintrin.h (_mm_and_si64, _mm_andnot_si64, _mm_or_si64,
 108         _mm_xor_si64): Remove casts.
 109
 110 2005-01-09  Zdenek Dvorak  <dvorakz@suse.cz>
 111
 112         PR tree-optimization/19224
 113         * tree-scalar-evolution.c (get_instantiated_value,
 114         set_instantiated_value): New functions.
 115         (instantiate_parameters_1): Cache the results.
 116         (instantiate_parameters, resolve_mixers): Initialize and free
 117         the cache.
 118
 119 2005-01-08  David Edelsohn  <edelsohn@gnu.org>
 120
 121         * config/i386/i386.md (addhi_4): Correct reference in comment.
 122         (addqi_4): Same.
 123
 124 2005-01-08  Richard Henderson  <rth@redhat.com>
 125
 126         * config/i386/emmintrin.h (_mm_cvtsi128_si32): Move earlier.
 127         (_mm_cvtsi128_si64x): Likewise.
 128         (_mm_srl_epi64, _mm_srl_epi32, _mm_srl_epi16, _mm_sra_epi32,
 129         _mm_sra_epi16, _mm_sll_epi64, _mm_sll_epi32, _mm_sll_epi16): Use
 130         the _mm_{srl,sll}i_foo counterpart, and _mm_cvtsi128_si32.
 131         * config/i386/i386-modes.def: Add V16HI, V32QI, V4DF, V8SF.
 132         * config/i386/i386-protos.h: Update.
 133         * config/i386/i386.c (print_operand): Add 'H'.
 134         (ix86_fixup_binary_operands): Split out from ...
 135         (ix86_expand_binary_operator): ... here.
 136         (ix86_fixup_binary_operands_no_copy): New.
 137         (ix86_expand_fp_absneg_operator): Handle vector mode results.
 138         (bdesc_2arg): Update names for sse{,2,3}_ prefixes.
 139         (ix86_init_mmx_sse_builtins): Remove *maskncmp* special cases.
 140         (safe_vector_operand): Use CONST0_RTX.
 141         (ix86_expand_binop_builtin): Use ix86_fixup_binary_operands.
 142         (ix86_expand_builtin): Merge CODE_FOR_sse2_maskmovdqu_rex64 and
 143         CODE_FOR_sse2_maskmovdqu.  Special case SSE version of MASKMOVDQU
 144         expansion.  Update names for sse{,2,3}_ prefixes.  Remove *maskncmp*
 145         special cases.
 146         * config/i386/i386.h (IX86_BUILTIN_CMPNGTSS): New.
 147         (IX86_BUILTIN_CMPNGESS): New.
 148         * config/i386/i386.md (UNSPEC_FIX_NOTRUNC): New.
 149         (attr type): Add sselog1.
 150         (attr unit, attr memory): Handle it.
 151         (movti, movti_internal, movti_rex64): Move near other integer moves.
 152         (movtf, movtf_internal): Move near other fp moves.
 153         (SSEMODE, SSEMODEI, vec_setv2df, vec_extractv2df, vec_initv2df,
 154         vec_setv4sf, vec_extractv4sf, vec_initv4sf, movv4sf, movv4sf_internal,
 155         movv2df, movv2df_internal, mov<SSEMODEI>, mov<SSEMODEI>_internal,
 156         movmisalign<SSEMODE>, sse_movups_1, sse_movmskps, sse_movntv4sf,
 157         sse_movhlps, sse_movlhps, sse_storehps, sse_loadhps, sse_storelps,
 158         sse_loadlps, sse_loadss, sse_loadss_1, sse_movss, sse_storess,
 159         sse_shufps, addv4sf3, vmaddv4sf3, subv4sf3, vmsubv4sf3, negv4sf2,
 160         mulv4sf3, vmmulv4sf3, divv4sf3, vmdivv4sf3, rcpv4sf2, vmrcpv4sf2,
 161         rsqrtv4sf2, vmrsqrtv4sf2, sqrtv4sf2, vmsqrtv4sf2, sse_andv4sf3,
 162         sse_nandv4sf3, sse_iorv4sf3, sse_xorv4sf3, sse2_andv2df3,
 163         sse2_nandv2df3, sse2_iorv2df3, sse2_xorv2df3, sse2_andv2di3,
 164         sse2_nandv2di3, sse2_iorv2di3, sse2_xorv2di3, maskcmpv4sf3,
 165         vmmaskcmpv4sf3, sse_comi, sse_ucomi, sse_unpckhps, sse_unpcklps,
 166         smaxv4sf3, vmsmaxv4sf3, sminv4sf3, vmsminv4sf3, cvtpi2ps, cvtps2pi,
 167         cvttps2pi, cvtsi2ss, cvtsi2ssq, cvtss2si, cvtss2siq, cvttss2si,
 168         cvttss2siq, addv2df3, vmaddv2df3, subv2df3, vmsubv2df3, mulv2df3,
 169         vmmulv2df3, divv2df3, vmdivv2df3, smaxv2df3, vmsmaxv2df3, sminv2df3,
 170         vmsminv2df3, sqrtv2df2, vmsqrtv2df2, maskcmpv2df3, vmmaskcmpv2df3,
 171         sse2_comi, sse2_ucomi, sse2_movmskpd, sse2_pmovmskb, sse2_maskmovdqu,
 172         sse2_maskmovdqu_rex64, sse2_movntv2df, sse2_movntv2di, sse2_movntsi,
 173         cvtdq2ps, cvtps2dq, cvttps2dq, cvtdq2pd, cvtpd2dq, cvttpd2dq,
 174         cvtpd2pi, cvttpd2pi, cvtpi2pd, cvtsd2si, cvtsd2siq, cvttsd2si,
 175         cvttsd2siq, cvtsi2sd, cvtsi2sdq, cvtsd2ss, cvtss2sd, cvtpd2ps,
 176         cvtps2pd, addv16qi3, addv8hi3, addv4si3, addv2di3, ssaddv16qi3,
 177         ssaddv8hi3, usaddv16qi3, usaddv8hi3, subv16qi3, subv8hi3, subv4si3,
 178         subv2di3, sssubv16qi3, sssubv8hi3, ussubv16qi3, ussubv8hi3, mulv8hi3,
 179         smulv8hi3_highpart, umulv8hi3_highpart, sse2_umulsidi3,
 180         sse2_umulv2siv2di3, sse2_pmaddwd, sse2_uavgv16qi3, sse2_uavgv8hi3,
 181         sse2_psadbw, sse2_pinsrw, sse2_pextrw, sse2_pshufd, sse2_pshuflw,
 182         sse2_pshufhw, eqv16qi3, eqv8hi3, eqv4si3, gtv16qi3, gtv8hi3,
 183         gtv4si3, umaxv16qi3, smaxv8hi3, uminv16qi3, sminv8hi3, ashrv8hi3,
 184         ashrv4si3, lshrv8hi3, lshrv4si3, lshrv2di3, ashlv8hi3, ashlv4si3,
 185         ashlv2di3, sse2_ashlti3, sse2_lshrti3, sse2_unpckhpd, sse2_unpcklpd,
 186         sse2_packsswb, sse2_packssdw, sse2_packuswb, sse2_punpckhbw,
 187         sse2_punpckhwd, sse2_punpckhdq, sse2_punpcklbw, sse2_punpcklwd,
 188         sse2_punpckldq, sse2_punpcklqdq, sse2_punpckhqdq, sse2_movupd,
 189         sse2_movdqu, sse2_movdq2q, sse2_movdq2q_rex64, sse2_movq2dq,
 190         sse2_movq2dq_rex64, sse2_loadd, sse2_stored, sse2_storehpd,
 191         sse2_loadhpd, sse2_storelpd, sse2_loadlpd, sse2_movsd, sse2_loadsd,
 192         sse2_loadsd_1, sse2_storesd, sse2_shufpd, sse2_clflush, sse2_mfence,
 193         mfence_insn, sse2_lfence, lfence_insn, mwait, monitor, addsubv4sf3,
 194         addsubv2df3, haddv4sf3, haddv2df3, hsubv4sf3, hsubv2df3, movshdup,
 195         movsldup, lddqu, loadddup, movddup): Move to sse.md.  Any with
 196         non-optabs meanings renamed with an "sse{,2,3}_" prefix at the
 197         same time.
 198         (SSEPUSH, push<SSEPUSH>): Remove.
 199         (MMXPUSH, push<MMXPUSH>): Remove.
 200         (sse_movaps, sse_movaps_1, sse_movups): Remove.
 201         (sse2_movapd, sse2_movdqa, sse2_movq): Remove.
 202         (sse2_andti3, sse2_nandti3, sse2_iorti3, sse2_xorti3): Remove.
 203         (sse_clrv4sf, sse_clrv2df, sse2_clrti): Remove.
 204         (maskncmpv4sf3, vmmaskncmpv4sf3): Remove.
 205         (maskncmpv2df3, vmmaskncmpv2df3): Remove.
 206         (ashrv8hi3_ti, ashrv4si3_ti, lshrv8hi3_ti, lshrv4si3_ti): Remove.
 207         (lshrv2di3_ti, ashlv8hi3_ti, ashlv4si3_ti, ashlv2di3_ti): Remove.
 208         * config/i386/athlon.md (athlon_sselog_load): Handle sselog1.
 209         (athlon_sselog_load_k8, athlon_sselog, athlon_sselog_k8): Likewise.
 210         * config/i386/ppro.md (ppro_sse_div_V4SF_load): Fix memory attr.
 211         (ppro_sse_log_V4SF_load): Similarly.  Handle sselog1.
 212         (ppro_sse_log_V4SF): Handle sselog1.
 213         * config/i386/predicates.md (const_0_to_1_operand): New.
 214         (const_0_to_255_mul_8_operand): New.
 215         (const_1_to_31_operand): Rename from const_int_1_31_operand.
 216         (const_2_to_3_operand, const_4_to_7_operand): New.
 217         * config/i386/sse.md: New file.
 218         (SSEMODE12, SSEMODE24, SSEMODE124, SSEMODE248, ssevecsize): New.
 219         (sse_movups): Rename from sse_movups_1.
 220         (sse_loadlss): Rename from sse_loadss_1.
 221         (andv4sf3, iorv4sf3, xorv4sf3, andv2df3): Remove the sse prefix
 222         from the name.
 223         (negv4sf2): Use ix86_expand_fp_absneg_operator.
 224         (absv4sf2, negv2df, absv2df): New.
 225         (addv4sf3): Add expander to call ix86_fixup_binary_operands_no_copy.
 226         (subv4sf3, mulv4sf3, divv4sf3, smaxv4sf3, sminv4sf3, andv4sf3,
 227         iorv4sf3, xorv4sf3, addv2df3, subv2df3, mulv2df3, divv2df3,
 228         smaxv2df3, sminv2df3, andv2df3, iorv2df3, xorv2df3, mulv8hi3,
 229         umaxv16qi3, smaxv8hi3, uminv16qi3, sminv8hi3): Likewise.
 230         (sse3_addsubv4sf3): Model correctly.
 231         sse3_haddv4sf3, sse3_hsubv4sf3, sse3_addsubv2df3, sse3_haddv2df3,
 232         sse3_hsubv2df3, sse2_ashlti3, sse2_lshrti3): Likewise.
 233         (sse_movhlps): Model with vec_select+vec_concat.
 234         (sse_movlhps, sse_unpckhps, sse_unpcklps, sse3_movshdup,
 235         sse3_movsldup, sse_shufps, sse_shufps_1, sse2_unpckhpd, sse3_movddup,
 236         sse2_unpcklpd, sse2_shufpd, sse2_shufpd_1, sse2_punpckhbw,
 237         sse2_punpcklbw, sse2_punpckhwd, sse2_punpcklwd, sse2_punpckhdq,
 238         sse2_punpckldq, sse2_punpckhqdq, sse2_punpcklqdq, sse2_pshufd,
 239         sse2_pshufd_1, sse2_pshuflw, sse2_pshuflw_1, sse2_pshufhw,
 240         sse2_pshufhw_1): Likewise.
 241         (neg<SSEMODEI>2, one_cmpl<SSEMODEI>2): New.
 242         (add<SSEMODEI>3, sse2_ssadd<SSEMODE12>3, sse2_usadd<SSEMODE12>3,
 243         sub<SSEMODEI>3, sse2_sssub<SSEMODE12>3, sse2_ussub<SSEMODE12>3,
 244         ashr<SSEMODE24>3, lshr<SSEMODE248>3, sse2_eq<SSEMODE124>3,
 245         sse2_gt<SSEMODDE124>3, and<SSEMODEI>3, sse_nand<SSEMODEI>3,
 246         ior<SSEMODEI>3, xor<SSEMODEI>3): Macroize from existing patterns.
 247         (addv4sf3, sse_vmaddv4sf3, mulv4sf3, sse_vmmulv4sf3, smaxv4sf3,
 248         sse_vmsmaxv4sf3, sminv4sf3, sse_vmsminv4sf3, addv2df3, sse2_vmaddv2df3,
 249         mulv2df3, sse2_vmmulv2df3, smaxv2df3, sse2_vmsmaxv2df3, sminv2df3,
 250         sse2_vmsminv2df3, umaxv16qi3, smaxv8hi3, uminv16qi3
 251         sminv8hi3): Mark commutative
 252         operands.  Use ix86_binary_operator_ok.
 253         (sse_unpckhps, sse_unpcklps, sse2_packsswb, sse2_packssdw,
 254         sse2_packuswb, sse2_punpckhbw, sse2_punpcklbw, sse2_punpckhwd,
 255         sse2_punpcklwd, sse2_punpckhdq, sse2_punpckldq, sse2_punpckhqdq,
 256         sse2_punpcklqdq): Allow operand2 in memory.
 257         (sse_movhlps, sse_movlhps, sse2_unpckhpd, sse2_unpcklpd
 258         sse2_movsd): Add memory alternatives.
 259         (sse_storelps): Turn expander into an insn; split after reload.
 260         (sse_storess, sse2_loadhpd, sse2_loadlpd): Add non-xmm inputs.
 261         (sse2_storehpd, sse2_storelpd): Add non-xmm outputs.
 262
 263 2005-01-08  Eric Botcazou  <ebotcazou@libertysurf.fr>
 264
 265         * configure.ac (DWARF-2 debug_line): Use objdump.
 266         * configure: Regenerate.
 267
 268 2005-01-08  Jeff Law  <law@redhat.com>
 269             Diego Novillo  <dnovillo@redhat.com>
 270
 271         PR tree-optimization/18241
 272         * tree-nrv.c (tree_nrv): Ignore volatile return values.
 273         * tree-ssa-dse.c (dse_optimize_stmt): Do not optimize
 274         statements with volatile operands.
 275         * tree-ssa-operands.c (add_stmt_operand): Do add volatile
 276         operands after marking a statement with has_volatile_ops.
 277
 278 2005-01-08  Roger Sayle  <roger@eyesopen.com>
 279
 280         * tree.c (int_fits_type_p): Always honor integer constant
 281         TYPE_MIN_VALUE and TYPE_MAX_VALUE if they exist.
 282
 283 2005-01-08  Roger Sayle  <roger@eyesopen.com>
 284
 285         * ifcvt.c (find_if_case_1): Reinstate 2005-01-04 change, now that
 286         the latent bug in rtl_delete_block has been resolved.
 287
 288 2005-01-08  Richard Sandiford  <rsandifo@redhat.com>
 289
 290         * config/mips/t-iris6 (MULTILIB_DIRNAMES): Use -mabi argument values.
 291         (MULTILIB_OSDIRNAMES): Use the standard lib, lib32 and lib64.
 292
 293 2005-01-08  Richard Sandiford  <rsandifo@redhat.com>
 294
 295         * config/mips/t-slibgcc-irix (SHLIB_LINK): Install a copy of the
 296         library as @multilib_dir@/$(SHLIB_SONAME).
 297
 298 2005-01-07  Eric Botcazou  <ebotcazou@libertysurf.fr>
 299
 300         * configure.ac (HAVE_AS_OFFSETABLE_LO10): Fix typo.
 301         * configure: Regenerate.
 302
 303 2005-01-07  Jakub Jelinek  <jakub@redhat.com>
 304
 305         * c-common.c (handle_mode_attribute): For ENUMERAL_TYPE, also copy
 306         TYPE_MODE.
 307
 308 2005-01-07  David Edelsohn  <edelsohn@gnu.org>
 309
 310         PR target/13674
 311         * config/rs6000/rs6000.c (rs6000_legitimize_reload_address):
 312         Convert non-word aligned offset address using ld/std into
 313         indirect address.
 314
 315 2005-01-07  Richard Henderson  <rth@redhat.com>
 316
 317         * config/i386/i386.md (sse_loadhps splitter): Fix operand number typo.
 318
 319 2005-01-07  Richard SAndiford  <rsandifo@redhat.com>
 320
 321         * tree.h (IS_EXPR_CODE_CLASS): Use a straight-forward range check.
 322
 323 2005-01-07  Jakub Jelinek  <jakub@redhat.com>
 324
 325         PR tree-optimization/19283
 326         * fold-const.c (fold_widened_comparison): Return NULL if shorter_type
 327         is not shorter than the original type.
 328
 329         PR rtl-optimization/19012
 330         * config/i386/i386.md (addqi_1_slp): Set memory attribute.
 331
 332         PR rtl-optimization/18861
 333         * cfgbuild.c (BLOCK_USED_BY_TABLEJUMP): Define.
 334         (FULL_STATE): Define.
 335         (mark_tablejump_edge): New function.
 336         (purge_dead_tablejump_edges): New function.
 337         (find_bb_boundaries): Use it.
 338
 339         PR tree-optimization/18828
 340         * builtins.c (expand_builtin_next_arg): Remove argument and all
 341         the argument checking.
 342         (expand_builtin): Adjust caller.
 343         (expand_builtin_va_start): Likewise.  Remove error for too many
 344         arguments.
 345         (fold_builtin_next_arg): Issue error for too many arguments.
 346         After checking arguments, replace them with magic arguments that
 347         prevent further checking of the args.
 348
 349 2005-01-06  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 350
 351         * pa64-hpux.h (STARTFILE_SPEC): Fix typo in spec.
 352
 353 2005-01-06  Roger Sayle  <roger@eyesopen.com>
 354
 355         PR target/6077
 356         * gcc.c (input_suffix_matches): Tweak the semantics of %{.s:...}
 357         and %{.S:...} (and their negative variants) to test whether the
 358         input file is assembler or pre-processed-assembler independent of
 359         the actual filename extension.
 360
 361 2005-01-06  Roger Sayle  <roger@eyesopen.com>
 362
 363         * simplify-rtx.c (simplify_subreg): Simplify truncations of shifts
 364         of sign or zero extended values.
 365
 366 2005-01-06  Geoffrey Keating  <geoffk@apple.com>
 367
 368         * c-cppbuiltin.c (builtin_define_float_constants): Set __*_EPSILON__
 369         for IBM long double format correctly.
 370
 371 2005-01-06  Daniel Berlin <dberlin@dberlin.org>
 372
 373         Fix PR tree-optimization/18792
 374
 375         * tree-data-ref.c (build_classic_dist_vector): Change first_loop
 376         to first_loop_depth, and use loop depth instead of loop number.
 377         (build_classic_dir_vector): Ditto.
 378         (compute_data_dependences_for_loop): Use depth, not loop number.
 379         * tree-loop-linear.c (try_interchange_loops): Use loop depth, not loop
 380         number. Pass in loops, instead of loop numbers.
 381         (gather_interchange_stats): Ditto.
 382         (linear_transform_loops): Ditto.
 383
 384 2005-01-06  Richard Sandiford  <rsandifo@redhat.com>
 385
 386         PR rtl-opt/13299
 387         * loop.c (get_monotonic_increment, biased_biv_fits_mode_p,
 388         biv_fits_mode_p, extension_within_bounds_p): New functions.
 389         (check_ext_dependent_givs): Use them.
 390
 391 2005-01-06  Roger Sayle  <roger@eyesopen.com>
 392
 393         * cfgrtl.c (rtl_delete_block): A basic block may be followed by
 394         more than one barrier, in which case we should delete them all.
 395
 396 2005-01-06  Tobias Schlueter  <tobias.schlueter@physik.uni-muenchen.de>
 397
 398         * gcc.c (process_command): Change year in 'gcc --version' to 2005.
 399
 400 2005-01-05  Daniel Berlin  <dberlin@dberlin.org>
 401
 402         Fix PR middle-end/19286
 403         Fix PR debug/19267
 404         * dwarf2out.c (gen_subprogram_die): If we've already tried to
 405         output this subprogram, simply ignore this attempt to do it again.
 406         (add_abstract_origin_attribute): Don't abort trying to add the abstract
 407         origin attribute if it's not possible.
 408         (gen_block_die): Don't ignore subblocks of "unused" blocks.
 409         (decls_for_scope): Ditto.
 410         * gimple-low.c (mark_blocks_with_used_subblocks): Remove.
 411         (mark_used_blocks): Don't call mark_blocks_with_used_subblocks.
 412
 413 2005-01-05  Richard Henderson  <rth@redhat.com>
 414
 415         PR target/11327
 416         * config/i386/i386.c (BUILTIN_DESC_SWAP_OPERANDS): New.
 417         (bdesc_2arg): Use it.
 418         (ix86_expand_binop_builtin): Force operands into registers
 419         when optimizing.
 420         (ix86_expand_unop_builtin, ix86_expand_unop1_builtin,
 421         ix86_expand_sse_compare, ix86_expand_sse_comi,
 422         ix86_expand_builtin): Likewise.
 423
 424 2005-01-05  Richard Henderson  <rth@redhat.com>
 425
 426         * config/ia64/ia64.c (rtx_needs_barrier): Handle CONST_VECTOR
 427         and VEC_SELECT.
 428         * config/ia64/vect.md (mulv8qi3): Re-implement with mix_[rl].
 429         (mulv4hi3): Set itanium_class mmmul.
 430         (fpack_sfxf, fpack_xfsf, fpack_xfxf): Remove.
 431         (fpack): Rename from fpack_sfsf.
 432
 433 2005-01-05  Richard Henderson  <rth@redhat.com>
 434
 435         PR rtl-opt/10692
 436         * reload1.c (do_input_reload): Restrict the optimization deleteing
 437         a previous output reload to RELOAD_FOR_INPUT.
 438
 439 2005-01-05  Steven Bosscher  <stevenb@suse.de>
 440
 441         * combine.c (expand_compound_operation)  <ZERO_EXTRACT>: Add
 442         comment that we fall through after case.
 443         (mark_used_regs_combine): Don't expect a SIGN_EXTRACT in a SET_DEST.
 444         (distribute_links): Likewise.
 445         * cse.c (cse_insn): Likewise.
 446         * cselib.c (cselib_invalidate_mem): Likewise.
 447         * df.c: Update comments at the top of the file.
 448         (read_modify_subreg_p): Update comments here too.
 449         (df_def_record_1): Don't expect a SIGN_EXTRACT in a SET_DEST.
 450         * flow.c (mark_set_1): Likewise.
 451         (mark_used_regs): Likewise.
 452         * gcse.c (mems_conflict_for_gcse_p): Likewise.
 453         (canon_list_insert): Likewise.
 454         (mark_set): Likewise.
 455         (try_replace_reg): Likewise.
 456         (store_killed_in_insn): Likewise.
 457         * loop.c (count_one_set): Likewise.
 458         (basic_induction_var): Likewise.
 459         * postreload-gcse.c (find_mem_conflicts): Likewise.
 460         * postreload.c (reload_combine_note_store): Likewise.
 461         (move2add_note_store): Likewise.
 462         * reload.c (find_equiv_reg): Likewise.
 463         (mark_referenced_resources): Likewise.
 464         * rtlanal.c (set_noop_p): Likewise.
 465         (note_stores): Likewise.
 466         (note_uses): Likewise.
 467         * sched-deps.c (sched_analyze_1): Likewise.
 468         * sched-rgn.c (check_live_1): Likewise.
 469         (update_live_1): Likewise.
 470         * config/i860/i860.c: Likewise.
 471
 472         * rtl.dec (SIGN_EXTRACT): Document that this cannot appear as
 473         an lvalue.
 474         (ZERO_EXTRACT): Mention that this one can be an lvalue.
 475
 476         * doc/rtl.texi: Update documentation for bit-fields and SET.
 477
 478 2005-01-05  Roger Sayle  <roger@eyesopen.com>
 479
 480         * ifcvt.c (find_if_case_1): Revert 2005-01-04 change.
 481
 482 2005-01-05  Jan Hubicka  <jh@suse.cz>
 483             Richard Henderson  <rth@redhat.com>
 484
 485         PR target/18910
 486         * config/i386/i386.c (ix86_expand_move): Handle tls symbols
 487         with an offset.
 488
 489 2005-01-05  Richard Henderson  <rth@redhat.com>
 490
 491         PR target/12902
 492         * config/i386/i386.md (sse_movhps, sse_movlps): Remove.
 493         (sse_shufps): Change operand 3 to const_int_operand.
 494         (sse2_storelps): Fix typo in template.
 495         (sse_storehps, sse_loadhps, sse_storelps, sse_loadlps): New.
 496         * config/i386/i386.c (ix86_expand_vector_move_misalign): Use them.
 497         (ix86_expand_builtin): Likewise.
 498
 499 2005-01-05  Julian Brown  <julian@codesourcery.com>
 500
 501         * config/arm/arm.c (arm_return_in_memory): Treat complex types
 502         as aggregates for AAPCS ABIs.
 503
 504 2005-01-05  Stan Shebs  <shebs@apple.com>
 505
 506         * unwind-dw2-fde-darwin.c (examine_objects): Use 64-bit
 507         Mach-O getters if ppc64.
 508         * config/darwin.c (darwin_asm_output_dwarf_delta): Obey
 509         size argument.
 510         * config/darwin.h (ASM_PREFERRED_EH_DATA_FORMAT): Use
 511         signed four-byte field for global code case.
 512         (STARTFILE_SPEC): Avoid crt2.o for 64-bit compilation.
 513
 514 2005-01-05  Roger Sayle  <roger@eyesopen.com>
 515
 516         PR middle-end/19100
 517         * c-common.c: Include real.h.
 518         (c_common_truthvalue_conversion): Avoid destructively modifying expr.
 519         Correctly handle TREE_CONSTANT_OVERFLOW for INTEGER_CST.
 520         Correctly handle TREE_CONSTANT_OVERFLOW and NaNs for REAL_CST.
 521         * Makefile.in (c-common.o): Update dependencies.
 522
 523 2005-01-05  Joseph S. Myers  <joseph@codesourcery.com>
 524
 525         * c-parse.in (asm_string): Add trailing semicolon.
 526
 527 2005-01-05  Joseph S. Myers  <joseph@codesourcery.com>
 528
 529         * c-parse.in (asm_string): New.  Don't allow wide strings in
 530         'asm'.
 531         (simple_asm_expr, asm_argument, asm_operand, asm_clobbers): Use
 532         asm_string instead of STRING.
 533
 534 2005-01-05  Joseph S. Myers  <joseph@codesourcery.com>
 535
 536         * c-typeck.c (constructor_no_implicit): Remove.
 537         (set_designator, process_init_element): Don't check
 538         constructor_no_implicit.
 539
 540 2005-01-05  J"orn Rennecke <joern.rennecke@st.com>
 541             Kaz Kojima  <kkojima@gcc.gnu.org>
 542
 543         PR target/16482
 544         * lcm.c (create_pre_exit): New.
 545         (optimize_mode_switching): In MODE_ENTRY / MODE_EXIT case, set
 546         ENTRY_EXIT_EXTRA to 3.  Use create_pre_exit.
 547
 548 2004-01-05  Richard Earnshaw  <rearnsha@arm.com>
 549
 550         * arm.h (TARGET_OPTIONS): Correctly record -mhard-float and
 551         -msoft-float in target_float_switch.
 552         * arm.c (arm_override_options): Fix processing of target_float_switch.
 553
 554 2004-01-05  Richard Earnshaw  <rearnsha@arm.com>
 555
 556         * arm/vfp.md (arm_movsi_vfp): Hide VFP register classes from register
 557         preferencing.
 558
 559 2004-01-05  Uros Bizjak  <uros@kss-loka.si>
 560
 561         * doc/invoke.texi (Intel 386 and AMD x86-64 Options):
 562         Replace i387 with 'i386 compiler' in -mfpmath=sse option.
 563
 564 2005-01-04  Roger Sayle  <roger@eyesopen.com>
 565
 566         * ifcvt.c (find_if_case_1): Avoid creating an empty forwarder block,
 567         if deleting the then-block allows the test-block to fallthru to the
 568         else-block.
 569
 570 2005-01-04  Andrew Pinski  <pinskia@physics.uc.edu>
 571
 572         PR c/19152
 573         * c-decl.c (diagnose_mismatched_decls): Accept "extern inline" declared
 574         after the full declaration if the are in two different TUs.
 575
 576 2005-01-04  Richard Henderson  <rth@redhat.com>
 577
 578         PR tree-opt/19158
 579         * tree-sra.c (generate_one_element_init): Just
 580         call gimplify_and_add.
 581         (generate_element_init): Record the
 582         new referenced variables and mark them for renaming
 583         and split out to ...
 584         (generate_element_init_1): This.
 585         (scalarize_init): Don't call push_gimplify_context/
 586         pop_gimplify_context.
 587
 588 2005-01-04  Geoffrey Keating  <geoffk@apple.com>
 589
 590         * toplev.c (get_src_pwd): Handle failure of getpwd().
 591
 592 2005-01-04  Roger Sayle  <roger@eyesopen.com>
 593
 594         * fold-const.c (fold_single_bit_test): Delete unreachable handling
 595         of TRUTH_NOT_EXPR.
 596         (fold): Don't call fold_single_bit_test with a TRUTH_NOT_EXPR, as
 597         all the cases handled by it are inverted by invert_truthvalue.
 598
 599 2005-01-04  Eric Botcazou  <ebotcazou@libertysurf.fr>
 600
 601         * config/sparc/sparc.md (save_register_windowdi): Add missing mode.
 602         (save_register_windowsi): Likewise.
 603
 604 2005-01-04  Richard Henderson  <rth@redhat.com>
 605
 606         * tree-mudflap.c (mf_varname_tree): Fix thinko setting declname.
 607
 608 2005-01-04  Uros Bizjak  <uros@kss-loka.si>
 609
 610         PR middle-end/17767
 611         * cse.c (fold_rtx) [RTX_COMPARE, RTX_COMM_COMPARE]: Don't attempt
 612         any simplifications of vector mode comparison operators.
 613         * simplify-rtx.c (simplify_relational_operation): Fix variable name.
 614
 615 2005-01-04  Paolo Bonzini  <bonzini@gnu.org>
 616             Devang Patel  <dpatel@apple.com>
 617
 618         PR tree-optimization/18308
 619         * tree-if-conv.c (add_to_dst_predicate_list): Gimplify
 620         the operands before creating a new expression.
 621         * dojump.c (do_jump): Make drop_through_label available
 622         for all cases.  Add expansion of COND_EXPR.
 623
 624 2005-01-04  Ira Rosen  <irar@il.ibm.com>
 625
 626         * tree-vectorizer.c (vect_analyze_offset_expr): Test for
 627         INTEGER_CST instead of TREE_CONSTANT.
 628         (vect_gen_niters_for_prolog_loop): Test for INTEGER_CST
 629         instead of TREE_CONSTANT.
 630         (vect_analyze_pointer_ref_access): Test for INTEGER_CST
 631         instead of TREE_CONSTANT.
 632
 633 2005-01-04  Eric Botcazou  <ebotcazou@libertysurf.fr>
 634
 635         * tree-eh.c (replace_goto_queue): Return early if the queue is empty.
 636
 637 2005-01-04  Uros Bizjak  <uros@kss-loka.si>
 638
 639         PR target/19240
 640         * config/i386/i386.md (*fop_df_1_i387): Disable for TARGET_SSE_MATH.
 641         (*fop_df_1_i387): Disable for (TARGET_SSE2 && TARGET_SSE_MATH).
 642
 643 2005-01-03  Richard Henderson  <rth@redhat.com>
 644
 645         * fold-const.c (force_fit_type): Cope with types larger than 2 HWI.
 646         (fold_convert_const_int_from_int, fold_convert_const_int_from_real,
 647         fold_convert_const_real_from_real): Split out from ...
 648         (fold_convert_const): ... here.
 649
 650 2005-01-03  Richard Henderson  <rth@redhat.com>
 651
 652         PR target/19235
 653         * config/i386/i386.md (movdi_2): Separate SSE1 and SSE2 alternatives.
 654         (mov<MMXMODEI>_internal): Likewise.
 655         (movdf_nointeger): Prefer Y while not preferring, but allowing, x.
 656         Add V2SF case; use it for SSE1; don't use TI.
 657         (movdf_integer): Likewise.
 658         (mov<SSEMODEI>_internal, movti_internal): Force V4SF for SSE1.
 659
 660 2005-01-03  Ira Rosen  <irar@il.ibm.com>
 661
 662         * tree-vectorizer.c (vect_strip_conversions): New function.
 663         (vect_analyze_offset_expr): Call vect_strip_conversions. Add
 664         check for binary class.
 665
 666 2005-01-03  Daniel Berlin  <dberlin@dberlin.org>
 667
 668         Fix PR debug/17924
 669         Fix PR debug/19191
 670         * dwarf2out.c (block_ultimate_origin): Follow decl origin if origin
 671         is a decl.
 672         * gimple-low.c (mark_blocks_with_used_vars): New function.
 673         (mark_blocks_with_used_subblocks): Ditto.
 674         (mark_used_blocks): Ditto.
 675         (pass_mark_used_blocks): New pass.
 676         * tree-inline.c: Include debug.h.
 677         (expand_call_inline): Call outlining_inline_function here.
 678         * tree-optimize.c (init_tree_optimization_passes): Add
 679         pass_mark_used_blocks.
 680         * tree-pass.h (pass_mark_used_blocks): New.
 681         * Makefile.in (tree-inline.o): Add debug.h dependency.
 682
 683 2005-01-03  Geoffrey Keating  <geoffk@apple.com>
 684
 685         * config/darwin.c (darwin_handle_weak_import_attribute): Permit
 686         VAR_DECLs to have weak_import attribute.
 687
 688         * config/rs6000/darwin-fallback.c: Use 'ucontext_t' rather than
 689         'struct ucontext'.
 690
 691 2004-01-03  Steven Bosscher  <stevenb@suse.de>
 692
 693         * passes.c (rest_of_compilation): Don't run regmove if only
 694         flag_expensive_optimizations, require flag_regmove instead.
 695
 696 2005-01-03  Eric Botcazou  <ebotcazou@libertysurf.fr>
 697
 698         * config/sparc/litecoff.h (TARGET_OS_CPP_BUILTINS): Do not
 699         register "sparc".
 700         * config/sparc/sysv4-only.h (TARGET_OS_CPP_BUILTINS): Likewise.
 701         * config/sparc/rtemself.h (TARGET_SUB_OS_CPP_BUILTINS): Likewise.
 702         * config/sparc/sol2-64.h (TARGET_SUB_OS_CPP_BUILTINS): Delete.
 703         * config/sparc/sp64-elf.h (TARGET_SUB_OS_CPP_BUILTINS): Likewise.
 704
 705 2005-01-03  Richard Henderson  <rth@redhat.com>
 706
 707         * config/ia64/ia64.c (TARGET_VECTOR_MODE_SUPPORTED_P): New.
 708         (ia64_const_ok_for_letter_p): New.
 709         (ia64_const_double_ok_for_letter_p): New.
 710         (ia64_extra_constraint): New.
 711         (ia64_expand_vecint_compare): New.
 712         (ia64_expand_vcondu_v2si): New.
 713         (ia64_expand_vecint_cmov): New.
 714         (ia64_expand_vecint_minmax): New.
 715         (ia64_print_operand): Add 'v'.
 716         (ia64_preferred_reload_class): New.
 717         (ia64_vector_mode_supported_p): New.
 718         * config/ia64/ia64.h (UNITS_PER_SIMD_WORD): New.
 719         (PREFERRED_RELOAD_CLASS): Move to function.
 720         (CONST_OK_FOR_LETTER_P): Move to function.
 721         (CONST_DOUBLE_OK_FOR_LETTER_P): Move to function.
 722         (CONSTRAINT_OK_FOR_Q, CONSTRAINT_OK_FOR_R): Remove.
 723         (CONSTRAINT_OK_FOR_S, CONSTRAINT_OK_FOR_T): Remove.
 724         (EXTRA_CONSTRAINT): Move to function.
 725         * config/ia64/ia64.md: Include vect.md.
 726         (itanium_class): Add mmalua.
 727         (type): Handle it.
 728         * config/ia64/itanium1.md (1_mmalua): New.  Add it to bypasses.
 729         (1b_mmalua): New.
 730         * config/ia64/itanium2.md (2_mmalua, 2b_mmalua): Similarly.
 731         * config/ia64/predicates.md (gr_reg_or_0_operand): Accept any
 732         CONST0_RTX.
 733         (const_int_2bit_operand): New.
 734         (fr_reg_or_0_operand): New.
 735         * config/ia64/ia64-modes.def: Add vector modes.
 736         * config/ia64/ia64-protos.h: Update.
 737         * config/ia64/vect.md: New file.
 738
 739 2005-01-03  Richard Henderson  <rth@redhat.com>
 740
 741         * simplify-rtx.c (simplify_binary_operation): Handle VEC_CONCAT.
 742
 743 2005-01-03  Uros Bizjak  <uros@kss-loka.si>
 744
 745         PR target/19236
 746         * config/i386/i386.c (log1psf2): Change mode of operands[0,1]
 747         to SFmode.
 748         (log1pdf2): Change mode of operands[0,1] to DFmode.
 749
 750 2005-01-03  Eric Botcazou  <ebotcazou@libertysurf.fr>
 751
 752         * config/sparc/sparc.h (SPARC_RELAXED_ORDERING): Define to false.
 753         * config/sparc/linux.h (SPARC_RELAXED_ORDERING): Define to true.
 754         * config/sparc/linux64.h (SPARC_RELAXED_ORDERING): Likewise.
 755         * config/sparc/sparc.c (TARGET_RELAXED_ORDERING): Define to
 756         SPARC_RELAXED_ORDERING.
 757
 758 2005-01-03  Richard Henderson  <rth@redhat.com>
 759             Uros Bizjak  <uros@kss-loka.si>
 760
 761         PR target/14631
 762         * config/i386/i386.c (ix86_expand_builtin): [IX86_BUILTIN_PINSRW,
 763         IX86_BUILTIN_PINSRW128]: Fix wrong selector range in error message.
 764         * config/i386/i386.md (mmx_pinsrw, sse2_pinsrw): Fix selector
 765         handling.
 766         (*mmx_pinsrw, *sse2_pinsrw): New patterns.
 767         * config/i386/i386/predicates.md (const_pow2_1_to_8_operand,
 768         const_pow2_1_to_128_operand): New predicates.
 769
 770 2005-01-02  Greg McGary  <greg@mcgary.org>
 771
 772         * tree-mudflap.c (mf_varname_tree): decl_printable_name handles
 773         anonymous decls.
 774         (mf_xform_derefs_1) [RESULT_DECL, STRING_CST]: Handle as innermost
 775         object.  [ptr_type]: Remove unused variable.
 776         Remember nearest addressable array-element or record-component
 777         when checking bitfield components.  Tolerate empty BIND_EXPR.
 778
 779 2005-01-01  Richard Henderson  <rth@redhat.com>
 780
 781         * tree-vectorizer.c (vect_analyze_offset_expr): Strip conversions
 782         that don't narrow the value.  Fail for other conversions.
 783
 784 2005-01-01  Richard Henderson  <rth@redhat.com>
 785
 786         PR c/19031
 787         * c-decl.c (pop_file_scope): Call maybe_apply_pending_pragma_weaks.
 788         * c-lang.c (finish_file): Don't do it here.
 789         * objc/objc-act.c (objc_finish_file): Likewise.
 790
 791         * cgraph.c (decl_assembler_name_equal): New.
 792         (cgraph_node_for_asm, cgraph_varpool_node_for_asm): New.
 793         (cgraph_varpool_node): Actually link up cgraph_varpool_nodes.
 794         * cgraph.h (struct cgraph_varpool_node): Add next.
 795         (cgraph_node_for_asm, cgraph_varpool_node_for_asm): Declare.
 796         * varasm.c (assemble_alias): Mark the target as needed.
 797
 798 2005-01-01  Andrew Pinski  <pinskia@physics.uc.edu>
 799
 800         PR middle-end/19221
 801         * function.c (get_arg_pointer_save_area): Use entry_of_function
 802         instead of get_insns.
 803
 804 2005-01-01  Roger Sayle  <roger@eyesopen.com>
 805             Andrew Pinski  <pinskia@physics.uc.edu>
 806             James E. Wilson  <wilson@specifixinc.com>
 807
 808         PR rtl-optimization/12092
 809         * loop.c (emit_prefetch_instructions): Do nothing if PREFETCH_BLOCK
 810         is zero.
 811
 812 2005-01-01  Roger Sayle  <roger@eyesopen.com>
 813             Olivier Hainque  <hainque@act-europe.fr>
 814
 815         * tree.c (int_fits_type_p): A narrower type always fits in a
 816         wider one, except for negative values into unsigned types.
 817
 818 2005-01-01  Roger Sayle  <roger@eyesopen.com>
 819
 820         * tree.c (int_fits_type_p): Compare the result of force_fit_type
 821         with the original constant rather than require TREE_OVERFLOW.
 822
 823 2005-01-01  Steven Bosscher  <stevenb@suse.de>
 824
 825         PR middle-end/17544
 826         * c-decl.c (finish_function): If compiling C99, annotate the
 827         compiler generated return with the current file name and line 0.
 828         * tree-cfg.c (remove_useless_stmts_warn_notreached): Only warn if
 829         the source line is greater than 0.
 830         (remove_bb): Likewise.
 831
 832 See ChangeLog.12 for earlier changes.