GCC SPEC2000: Releases comparison on x86

The goal of these runs is to monitor the progress of different GCC releases on x86. Most widely used common options -O2 and -O3 are taken for all runs on a machine which is supported for all releases. Additionally we use -mtune=pentium4 (-mcpu=pentium4 for old releases). x86 for Pentium4 has been supported for a long time. So in major degree these data reflect progress of machine-independent optimizations.

The used machine is 3.2Ghz Intel Pentium4 with 1GB memory under RHEL4. The compiler is configured with `--enable-checking=release`.

All changes are given relative to 3.2.3 for SPECInt2000 and relative to 4.0.4 for SPECFP2000.

Compilation Speed

Data for fortran compiler are given for releases starting with 4.0.4.
We used -O2 for galgel compilation by fortran of 4.0.4 because galgel crashes the fortran compiler in -O3 mode.
Code Size
- Base SPECInt2000
- Base SPECFP2000
- Peak SPECInt2000
- Peak SPECFP2000
  
  We used -O2 for galgel compilation by fortran of 4.0.4 because galgel crashes the fortran compiler in -O3 mode.
Generated Code Performace
- Base SPECInt2000
- Base SPECFP2000
- Peak SPECInt2000
- Peak SPECFP2000
  
  We used -O2 for galgel compilation by fortran of 4.0.4 because galgel crashes the fortran compiler in -O3 mode.