$Revision: 5.0.2.3 $
Package: COMPILER
The value of this variable can be t, nil, or a function object that accepts four arguments and returns t or nil. The arguments passed to the function will be the values of the safety, space, speed, and debug optimization qualities, in that order. nil is equivalent to a function that always returns nil and t to a function that always returns t. When we say t (or true) or nil (or false) in the text below, we mean that the function returns, respectively, t or nil.]
If true, the compiler will trust declarations in code (other than dynamic-extent declarations -- see trust-dynamic-extent-declarations-switch) and produce code (when it can) that is optimized given the declarations. These declarations typically specify the type of values of variables. If nil, declarations will be ignored except (declare notinline) and (declare special) which are always complied with.
See compiling.htm for information on the compiler.
See introduction.htm for a general description of the documentation and index.htm for an index.
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