------- Comment #11 from rguenth at gcc dot gnu dot org  2006-04-21 12:34 
-------
Exchanging FRE with DCE produces on x86_64 (-O2 vs. -O2 with patch):

                                     Estimated                     Estimated
                   Base      Base      Base      Peak      Peak      Peak
   Benchmarks    Ref Time  Run Time   Ratio    Ref Time  Run Time   Ratio
   ------------  --------  --------  --------  --------  --------  --------
   164.gzip          1400   165       851          1400   164       851    *
   164.gzip          1400   164       851    *     1400   164       856
   164.gzip          1400   164       856          1400   164       851
   175.vpr           1400   157       892    *     1400   160       877    *
   175.vpr           1400   156       898          1400   159       882
   175.vpr           1400   158       888          1400   161       872
   176.gcc           1100        --          X     1100        --          X
   181.mcf           1800   319       564          1800   320       562    *
   181.mcf           1800   320       562    *     1800   320       562
   181.mcf           1800   321       562          1800   320       563
   186.crafty        1000    65.8    1520          1000    65.3    1532
   186.crafty        1000    66.0    1515    *     1000    65.2    1534
   186.crafty        1000    66.6    1500          1000    65.2    1533    *
   197.parser        1800   267       675          1800   268       671
   197.parser        1800   268       671    *     1800   269       670
   197.parser        1800   268       671          1800   268       671    *
   252.eon           1300    89.4    1454          1300    89.1    1459    *
   252.eon           1300    90.0    1444          1300    90.1    1443
   252.eon           1300    89.5    1452    *     1300    89.0    1461
   253.perlbmk       1800   160      1126    *     1800   160      1126    *
   253.perlbmk       1800   159      1131          1800   159      1130
   253.perlbmk       1800   160      1123          1800   160      1124
   254.gap           1100   114       963    *     1100   117       941    *
   254.gap           1100   114       963          1100   117       942
   254.gap           1100   115       956          1100   118       934
   255.vortex        1900   143              X     1900   143              X
   255.vortex        1900   144              X     1900   144              X
   255.vortex        1900   143              X     1900   143              X
   256.bzip2         1500   164       913    *     1500   165       912    *
   256.bzip2         1500   164       917          1500   164       917
   256.bzip2         1500   164       912          1500   165       911
   300.twolf         3000   292      1028          3000   296      1014
   300.twolf         3000   293      1023          3000   292      1028
   300.twolf         3000   293      1024    *     3000   295      1016    *
   ========================================================================
   164.gzip          1400   164       851    *     1400   164       851    *
   175.vpr           1400   157       892    *     1400   160       877    *
   176.gcc                                   X                             X
   181.mcf           1800   320       562    *     1800   320       562    *
   186.crafty        1000    66.0    1515    *     1000    65.2    1533    *
   197.parser        1800   268       671    *     1800   268       671    *
   252.eon           1300    89.5    1452    *     1300    89.1    1459    *
   253.perlbmk       1800   160      1126    *     1800   160      1126    *
   254.gap           1100   114       963    *     1100   117       941    *
   255.vortex                                X                             X
   256.bzip2         1500   164       913    *     1500   165       912    *
   300.twolf         3000   293      1024    *     3000   295      1016    *
   Est. SPECint_base2000                   --
   Est. SPECint2000                                                      --

                                     Estimated                     Estimated
                   Base      Base      Base      Peak      Peak      Peak
   Benchmarks    Ref Time  Run Time   Ratio    Ref Time  Run Time   Ratio
   ------------  --------  --------  --------  --------  --------  --------
   168.wupwise       1600       148      1084      1600       147      1086
   168.wupwise       1600       149      1075      1600       148      1079
   168.wupwise       1600       148      1082*     1600       147      1086*
   171.swim          3100       381       814      3100       381       814
   171.swim          3100       380       816      3100       380       815
   171.swim          3100       380       816*     3100       380       815*
   172.mgrid         1800       244       737      1800       243       740
   172.mgrid         1800       244       737      1800       243       741
   172.mgrid         1800       244       737*     1800       243       741*
   173.applu         2100       262       801      2100       263       797
   173.applu         2100       263       799*     2100       264       796*
   173.applu         2100       263       798      2100       264       795
   177.mesa          1400       120      1170      1400       120      1168
   177.mesa          1400       119      1176*     1400       119      1177
   177.mesa          1400       119      1176      1400       119      1176*
   178.galgel        2900       195      1486      2900       193      1503*
   178.galgel        2900       194      1495*     2900       197      1472
   178.galgel        2900       193      1501      2900       192      1510
   179.art           2600       249      1042*     2600       247      1053
   179.art           2600       249      1044      2600       241      1080
   179.art           2600       251      1035      2600       246      1058*
   183.equake        1300       121      1073      1300       121      1072*
   183.equake        1300       122      1066      1300       122      1067
   183.equake        1300       121      1072*     1300       121      1073
   187.facerec       1900       226       842*     1900       225       846*
   187.facerec       1900       226       839      1900       225       843
   187.facerec       1900       225       844      1900       224       847
   188.ammp          2200       227       971      2200       227       968
   188.ammp          2200       227       971*     2200       227       971*
   188.ammp          2200       227       968      2200       227       971
   189.lucas         2000       181      1105      2000       182      1097*
   189.lucas         2000       182      1100      2000       183      1094
   189.lucas         2000       181      1104*     2000       182      1101
   191.fma3d         2100       257       818*     2100       256       819*
   191.fma3d         2100       257       818      2100       257       819
   191.fma3d         2100       257       818      2100       256       819
   200.sixtrack      1100       257       428      1100       259       425
   200.sixtrack      1100       257       428      1100       259       425
   200.sixtrack      1100       257       428*     1100       259       425*
   301.apsi          2600       277       937*     2600       281       926*
   301.apsi          2600       277       939      2600       280       928
   301.apsi          2600       278       936      2600       281       925 
   ========================================================================
   168.wupwise       1600       148      1082*     1600       147      1086*
   171.swim          3100       380       816*     3100       380       815*
   172.mgrid         1800       244       737*     1800       243       741*
   173.applu         2100       263       799*     2100       264       796*
   177.mesa          1400       119      1176*     1400       119      1176*
   178.galgel        2900       194      1495*     2900       193      1503*
   179.art           2600       249      1042*     2600       246      1058*
   183.equake        1300       121      1072*     1300       121      1072*
   187.facerec       1900       226       842*     1900       225       846*
   188.ammp          2200       227       971*     2200       227       971*
   189.lucas         2000       181      1104*     2000       182      1097*
   191.fma3d         2100       257       818*     2100       256       819*
   200.sixtrack      1100       257       428*     1100       259       425*
   301.apsi          2600       277       937*     2600       281       926*
   Est. SPECfp_base2000                   918      
   Est. SPECfp2000                                                      918


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23346

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