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3
3-30
i960 Processor Compiler User's Guide
sb | nosb
tce | notce
Default
The set of optimizations performed is determined by the argument of the
(Optimize) option.
Discussion
Use the
(Fine-tune) option to fine-tune how your code is optimized. For
F
general purposes, the optimization level specified with the
option is sufficient. The optimizations performed at each level balance
considerations of code quality, ease of debugging, and compilation time.
However, circumstances can call for use of, or disabling of, some specific
optimizations.
Example
To disable heuristic function in-lining and leaf procedure generation when
compiling at optimization level 2, enter the following:
ic960 -F noai,nolp -O2 proto.c
enables/disables superblock formation.
Suppressing this optimization may reduce your
application's code size.
enables/disables conversion of tail calls into
branch instructions at optimization level 1 or 2.
is the default at optimization level 1, and
notce
is the default at optimization level 2.
tce
O
(Optimize)
O
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