Specifies the level of optimization of the code produced by the compiler.
Note: This directive is supported for native COBOL only.
Syntax:
>>-.---.--OPT--"integer"-------------------><
+-/-+
Parameters:
-
integer
- The level of optimization; one of:
- 1
- Minimal optimization.
- 2
- Default optimization.
- 3
- Additional optimization - particularly of STRING, UNSTRING and INSPECT. This option increases the time taken to generate a
program in comparison to the default optimization.
- 4
- Optimized as for option 3, but in addition the code is scheduled. This option increases the time taken to generate a program
in comparison to option 3.
Properties:
| Default:
|
OPT"2"
|
| Phase:
|
Generate
|
| $SET:
|
Any
|
Dependencies:
If no other OPT level is specified, set to OPT"1" at end by ANIM.
Comments:
OPT is the equivalent of OPT"3".
Debugging code compiled with an OPT level greater than 1 can be difficult, as compiler optimizations reorganize instructions derived from your source in such a way that, for example, Step might appear to jump statements or execute statements out of order, and Query and Modify might not work as expected.