doc/guide/src/RunningOnS390.adoc

   1 RunningOnS390
   2 =============
   3
   4 MLton runs fine on the S390 architecture.
   5
   6 == Notes ==
   7
   8 * When compiling for S390, MLton doesn't support native code
   9 generation (`-codegen native`).  Hence, performance is not as good as
  10 it might be and compile times are longer.  Also, the quality of code
  11 generated by `gcc` is important.  By default, MLton calls `gcc -O1`.
  12 You can change this by calling MLton with `-cc-opt -O2`.