Intel i960 - Page 63

gcc960 Compiler Driver
2-45
2
nostdlib (No Standard Libraries)
Do not use standard
libraries.
Excludes standard libraries.
O (Optimize)
Specifies optimization
level.
O[ level ]
The O[ level ] option specifies the level of optimization as described
below.
O0 Turns optimization off, and additionally disables
default optimizations that may interfere with
debugging. This is the default.
O or O1 These options enable basic optimizations,
including: advanced register allocation, common
subexpression elimination, loop invariant code
motion, expression simplification and instruction
combination, jump optimization, dead-code
elimination, and i960 processor-specific
peephole optimization.
O1 is equivalent to O.
This is the default setting when you use the
fdb
(Program Database) or fprof (Instrument)
option.