ekirpichov: > Hi, > > I'm parsing Java classfiles with Data.Binary, the code is here: > http://paste.org/index.php?id=4625 > > The problem is that the resulting code parses rt.jar from JDK6 (about > 15K classes, 47Mb zipped) in 15 seconds (run the program with main > -mclose rt.jar, for instance), which is 10 times slower than my Java > version of the same code. > > I compile the program with -O2 ; I tried -ddump-inlinings and it turns > out that my readByte/readWord16/readWord32 functions don't get > inlined, despite being simply aliases for 'get::Get WordXX'; so, in > places where my Java version does a pointer access (after being > JIT-compiled), the Haskell version does two function calls. > > What can be the reason of this lack of inlining? Or how do I > understand the output of -ddump-inlinings? >
Which version of GHC and Data.Binary are you using? If using 6.8.x, use the previous Data.Binary release. If using 6.10.x, use the latest. -- Don _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
