Compiler policy is controlled by the
supporting all ANSI optimization qualities (
For effects of various optimization qualities on type-safety and debuggability see Declarations as Assertions and Debugger Policy Control.
Ordinarily, when the
speed quality is high, the compiler emits
notes to notify the programmer about its inability to apply various
optimizations. For selective muffling of these notes See Controlling Verbosity.
The value of
space mostly influences the compiler's decision
whether to inline operations, which tend to increase the size of
programs. Use the value
0 with caution, since it can cause the
compiler to inline operations so indiscriminately that the net effect
is to slow the program by causing cache misses or even swapping.
 A deprecated
sb-ext:inhibit-warnings is still supported, but
liable to go away at any time.