i960 Processor Compiler User's Guide
2-32
2
condition is not checked for each
iteration. In a few cases, however, the
increased code size may decrease
performance.
This option uses several decision criteria
determine how far to unroll a loop. For
example, when the loop body is small
and there are relatively few iterations, it
may choose to completely unroll the
loop. For loops with larger bodies and
more iterations, it may partially unroll
the loop and change the increment
counter accordingly.
funroll-loops
enables both fstrength-reduce and
frerun-cse-after-loop.
f[no-]volatile Consider/do not consider all memory
references through pointers to be
volatile.
f[no-]volatile-global Consider/do not consider all references
to global variables to be volatile.
f[no-]writable-strings Store/do not store string constants in the
writable data segment and make them
unique. This is for compatibility with
old programs that assume they can write
into string constants.
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