llvm-gcc-4.2 vs gcc 4.2.4

Here are the results from current llvm/llvm-gcc-4.2 svn and
gcc 4.2.4 for the Polyhedron 2005 benchmarks under MacOS X
10.5.6 on a MacPro.

              Ave Run (secs) Ave Run (secs) llvm-gcc-4.2/
Benchmark llvm-gcc-4.2 svn gcc 4.2.4 gcc 4.2.4
ac 15.01 15.32 0.980
aermod 15.96 22.96 0.695
air 8.25 8.15 1.012
capaccita 51.41 52.16 0.986
channel 3.32 5.17 0.642
doduc 34.06 34.43 0.989
fatigue 12.80 12.57 1.018
gas_dyn 16.45 13.59 1.210
induct 26.70 28.61 0.933
linpk 15.40 15.46 0.996
mdbx 14.19 12.41 1.143
nf 29.01 27.08 1.071
protein 45.03 41.61 1.082
rnflow 39.67 35.37 1.122
test_fpu 14.03 11.94 1.172
tfft 2.19 2.13 1.028