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...functions is that most compilers miscompile some of the 7 million functions. llvm-gcc and clang are the only ones we tested that actually get them all right. To compile these functions this code needs to be prepended: #include <limits.h> #include <stdint.h> #include "safe_abbrev.h" #include "safe_math.h" The safe math headers are here: http://www.cs.utah.edu/~regehr/safe_math/ Anyway I just throw this out there. People on this list have told me before that missed-optimization bugs are not considered very interesting. The ideal result (from my poi...

So it would appear that llvm-gcc and clang are both slower than gcc4 which is infamous for being slow at compiling code, and yes this is with a release build/--enable-optimizations. This seems to go against notes such as http://clang.llvm.org/features.html#performance which claim clang is signifcantly faster than gcc. Below are some times and the larger object files when compiling an i386

...miscompile some of the 7 million functions. llvm-gcc and clang are the > only ones we tested that actually get them all right. > > To compile these functions this code needs to be prepended: > > #include <limits.h> > #include <stdint.h> > #include "safe_abbrev.h" > #include "safe_math.h" > > The safe math headers are here: > > http://www.cs.utah.edu/~regehr/safe_math/ > > Anyway I just throw this out there. People on this list have told me > before that missed-optimization bugs are not considered very int...

...> miscompile some of the 7 million functions. llvm-gcc and clang are the > only ones we tested that actually get them all right. > > To compile these functions this code needs to be prepended: > > #include <limits.h> > #include <stdint.h> > #include "safe_abbrev.h" > #include "safe_math.h" > > The safe math headers are here: > > http://www.cs.utah.edu/~regehr/safe_math/ > > Anyway I just throw this out there. People on this list have told me > before that missed-optimization bugs are not considered very interesti...