I did a project before involving program speed optimization for the Intel x86 platform, the performance of the application compiled using Intel C++ and using Intel Performance Primitive (IPP) is significantly faster than that without IPP.
I wonder if the JVM can be compiled for the Intel platform using Intel tools and if it will have significant performance improvement?
Most of the machine/native code which is run is generated by the JIT.
For code which is currently written in C or C++ it might be faster, but this code shouldn’t be called directly very much. If you have some critical JNI libraries, it might help.