| 1 | RunningOnHPPA |
| 2 | ============= |
| 3 | |
| 4 | MLton runs fine on the HPPA architecture. |
| 5 | |
| 6 | == Notes == |
| 7 | |
| 8 | * When compiling for HPPA, MLton targets the 32-bit HPPA architecture. |
| 9 | |
| 10 | * When compiling for HPPA, MLton doesn't support native code |
| 11 | generation (`-codegen native`). Hence, performance is not as good as |
| 12 | it might be and compile times are longer. Also, the quality of code |
| 13 | generated by `gcc` is important. By default, MLton calls `gcc -O1`. |
| 14 | You can change this by calling MLton with `-cc-opt -O2`. |
| 15 | |
| 16 | * When compiling for HPPA, MLton uses `-align 8` by default. While |
| 17 | this speeds up reals, it also may increase object sizes. If your |
| 18 | program does not make significant use of reals, you might see a |
| 19 | speedup with `-align 4`. |