-qspill
Category
Pragma equivalent
#pragma options [no]spill
Purpose
Specifies the size (in bytes) of the register spill space, the internal program storage areas used by the optimizer for register spills to storage.
Defaults
-qspill=512
Parameters
- size
- An integer representing the number of bytes for the register allocation spill area.
Usage
If your program is very complex, or if there are too many computations to hold in registers at one time and your program needs temporary storage, you might need to increase this area. Do not enlarge the spill area unless the compiler issues a message requesting a larger spill area. In case of a conflict, the largest spill area specified is used.
Predefined macros
None.
Examples
If you received
a warning message when compiling myprogram.c and
want to compile it specifying a spill area of 900 entries, enter:
xlc myprogram.c -qspill=900
