Hi Jack,
Below are the results for the Polyhedron 2005 benchmarks compiled with llvm/compiler-rt/dragonegg 3.3svn at r182439 against current
FSF gcc 4.7.3svn and 4.8.1svn. The only major bug remaining in the dragonegg 3.3svn support for gcc 4.8.x is 15980 – _iround and _iroundf undefined for dragonegg under gcc 4.8.0
which results in unresolved symbols for _iround and _iroundf in the aermod and rnflow testcases. Note that this skews the geometric mean
of the run time to much higher values.I also didn't hook up LLVM's new fast-math optimizations yet, which I expect to
make a big difference.
Duncan,
Is current dragonegg 3.3svn configured to enable llvm vectorization like clang or do we still have to
manually pass those flags with -fplugin-arg-dragonegg-llvm-option? Also can the new fast-math optimizations
be manually enabled in dragonegg via flags to -fplugin-arg-dragonegg-llvm-option as well?
Jack