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...n-arg-dragonegg-enable-gcc-optzns) in RC3. I assume we still only have partial coverage of all of the -ffast-math optimizations performed by FSF gcc in llvm's fast-math support, correct? Jack Tested on x86_apple-darwin12 Compile Flags: -ffast-math -funroll-loops -O3 de-gfc47: /sw/lib/gcc4.7/bin/gfortran -fplugin=/sw/lib/gcc4.7/lib/dragonegg.so -specs=/sw/lib/gcc4.7/lib/integrated-as.specs de-gfc48: /sw/lib/gcc4.8/bin/gfortran -fplugin=/sw/lib/gcc4.8/lib/dragonegg.so -specs=/sw/lib/gcc4.8/lib/integrated-as.specs de-gfc47+optzns: /sw/lib/gcc4.7/bin/gfortran -fplugin=/sw/...

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 http://llvm.org/bugs/show_bug.cgi?id=15980 which results in unresolved symbols for _iround and _iroundf in the aermod and rnflow testcases. Note that this

...d induct: since turning on gcc's optimizations there halve the run-time, LLVM's IR optimizers are clearly missing something important. Ciao, Duncan. > Jack > > Tested on x86_apple-darwin12 > > Compile Flags: -ffast-math -funroll-loops -O3 > > de-gfc47: /sw/lib/gcc4.7/bin/gfortran -fplugin=/sw/lib/gcc4.7/lib/dragonegg.so -specs=/sw/lib/gcc4.7/lib/integrated-as.specs > de-gfc48: /sw/lib/gcc4.8/bin/gfortran -fplugin=/sw/lib/gcc4.8/lib/dragonegg.so -specs=/sw/lib/gcc4.8/lib/integrated-as.specs > de-gfc47+optzns: /sw/lib/gcc4.7/bin/gfortran -fp...