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Compiler Command-line Options
2.1.122 -Ospace
This option instructs the compiler to perform optimizations to reduce image size at the
expense of a possible increase in execution time.
Use this option if code size is more critical than performance. For example, when the
-Ospace option is selected, large structure copies are done by out-of-line function calls
instead of inline code.
If required, you can compile the time-critical parts of your code with -Otime, and the rest
with -Ospace.
Default
If you do not specify either -Ospace or -Otime, the compiler assumes -Ospace.
See also
• -Otime
• -Onum on page 2-96
• #pragma Onum on page 4-67
• #pragma Ospace on page 4-68
• #pragma Otime on page 4-68.
2.1.123 -Otime
This option instructs the compiler to perform optimizations to reduce execution time at
the expense of a possible increase in image size.
Use this option if execution time is more critical than code size. If required, you can
compile the time-critical parts of your code with -Otime, and the rest with -Ospace.
Default
If you do not specify -Otime, the compiler assumes -Ospace.
Example
When the -Otime option is selected, the compiler compiles:
while (expression) body;
as:
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