Baseline C  : cc  -arch ev6 -fast +CFB ONESTEP 
          C++: cxx -arch ev6 -O2        ONESTEP 
 
 Peak: 
   All but 252.eon: cc -g3 -arch ev6 ONESTEP
      164.gzip: -fast -O4 -non_shared +CFB 
       175.vpr: -fast -O4 -assume restricted_pointers +CFB 
       176.gcc: -fast -O4 -xtaso_short -all -ldensemalloc -none
                +CFB +IFB 
       181.mcf: -fast -xtaso_short +CFB +IFB +PFB
    186.crafty: same as base
    197.parser: -fast -O4 -xtaso_short -non_shared +CFB
       252.eon: cxx -arch ev6 -O2 -all -ldensemalloc -none 
   253.perlbmk: -fast -non_shared +CFB +IFB 
       254.gap: -fast -O4 -non_shared +CFB +IFB +PFB 
    255.vortex: -fast -non_shared +CFB +IFB
     256.bzip2: -fast -O4 -non_shared +CFB 
     300.twolf: -fast -O4 -assume restricted_pointers -all 
                -ldensemalloc -none +CFB +IFB

 Most benchmarks are built using one or more types of 
 profile-driven feedback.  The types used are designated
 by abbreviations in the notes:

 +CFB: Code generation is optimized by the compiler, using 
       feedback from a training run.  These commands are
       done before the first compile (in phase "fdo_pre0"):

            mkdir /tmp/pp
            rm -f /tmp/pp/${baseexe}*

       and these flags are added to the first and second compiles:

            PASS1_CFLAGS = -prof_gen_noopt -prof_dir /tmp/pp
            PASS2_CFLAGS = -prof_use       -prof_dir /tmp/pp
 
      (Peak builds use /tmp/pp above; base builds use /tmp/pb.)

 +IFB: Icache usage is improved by the post-link-time optimizer 
       Spike, using feedback from a training run.  These commands
       are used (in phase "fdo_postN"):  

            mv ${baseexe} oldexe
            spike oldexe -feedback oldexe -o ${baseexe}

 +PFB: Prefetches are improved by the post-link-time optimizer 
       Spike, using feedback from a training run.  These
       commands are used (in phase "fdo_post_makeN"):

            rm -f *Counts*
            mv ${baseexe} oldexe
            pixie -stats dstride oldexe 1>pixie.out 2>pixie.err
            mv oldexe.pixie ${baseexe}

       A training run is carried out (in phase "fdo_runN"), and 
       then this command (in phase "fdo_postN"):

            spike oldexe -fb oldexe -stride_prefetch -o ${baseexe}

 When Spike is used for both Icache and Prefetch improvements, 
 only one spike command is actually issued, with the Icache 
 options followed by the Prefetch options.
 
 Portability: gcc: -Dalloca=__builtin_alloca; crafty: -DALPHA
 perlbmk: -DSPEC_CPU2000_DUNIX; vortex: -DSPEC_CPU2000_LP64
 gap: -DSYS_HAS_CALLOC_PROTO -DSYS_IS_BSD -DSYS_HAS_IOCTL_PROTO 
      -DSPEC_CPU2000_LP64
  
 Information on UNIX V5.1 Patches can be found at
 http://ftp1.service.digital.com/public/unix/v5.1/
  
 
 Spike, and the Program Analysis Tools, are part of the Developers' 
 Tool Kit Supplement, http://www.tru64unix.compaq.com/dtk/ .  The
 features used in this SPEC submission will be available at the web 
 site as a beta kit in August, 2001, and as a production release in
 October, 2001.  The C compiler for this SPEC submission has been
 available at the same location, as a production release, since
 May, 2001.