Sample programs for comparison of different VM interpretation techniques. See the Makefile for the full list of targets.

• switched - switched interpreter
• threaded - threaded interpreter
• predecoded - switched interpreter with preliminary decoding phase
• subroutined - subroutined interpreter
• threaded-cached - threaded interpreter with pre-decoding.
• tailrecursive - subroutined interpreter with tail-call optimization
• translated - binary translator to Intel 64 machine code
• native - a static implementation of the test program in C

Use measure.sh to measure run time of individual binaries or to perform a comparison of multiple variants (alternatively, run make all measure).

Tested to compile with GCC 4.8.1 and ICC 15.0.3 on Ubuntu Linux 12.04.5. Limited testing is also done on Windows 8.1 Cygwin64 environment.

An article discussing structure, performance variations, and comparison of interpreters: http://habrahabr.ru/company/intel/blog/261665/ (in Russian).