------- Comment #5 from ubizjak at gmail dot com 2007-02-24 19:09 ------- (In reply to comment #2) > I have verified that revision 119252: > > http://gcc.gnu.org/ml/gcc-cvs/2006-11/msg00907.html > breaks -mtune=nocona. Jan, can you take a look? Thanks.
Something is still wrong with unrolled_loop stringop handling. Patch at http://gcc.gnu.org/ml/gcc-patches/2007-02/msg01937.html and the following patch that disables unrolled loop stringops (for nocona) bootstraps OK for -mtune=nocona. This applies to -march=athlon64 as well. Index: i386.c =================================================================== --- i386.c (revision 122286) +++ i386.c (working copy) @@ -789,10 +789,10 @@ COSTS_N_INSNS (44), /* cost of FSQRT instruction. */ {{libcall, {{12, loop_1_byte}, {-1, rep_prefix_4_byte}}}, {libcall, {{32, loop}, {20000, rep_prefix_8_byte}, - {100000, unrolled_loop}, {-1, libcall}}}}, + /*{100000, unrolled_loop},*/ {-1, libcall}}}}, {{libcall, {{6, loop_1_byte}, {48, loop}, {20480, rep_prefix_4_byte}, {-1, libcall}}}, - {libcall, {{24, loop}, {64, unrolled_loop}, + {libcall, {{24, loop}, /*{64, unrolled_loop},*/ {8192, rep_prefix_8_byte}, {-1, libcall}}}} }; -- ubizjak at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ubizjak at gmail dot com Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2007-02-24 19:09:51 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30770
