compiler.tree.propagation.transforms ;
IN: compiler.tree.propagation.known-words
-\ fixnum
-most-negative-fixnum most-positive-fixnum [a,b]
-"interval" set-word-prop
-
-\ array-capacity
-0 max-array-capacity [a,b]
-"interval" set-word-prop
-
{ + - * / }
[ { number number } "input-classes" set-word-prop ] each
{ fixnum bignum integer rational float real number object }
[ class<= ] with find nip ;
-: fits? ( interval class -- ? )
- "interval" word-prop interval-subset? ;
+: fits-in-fixnum? ( interval -- ? )
+ fixnum-interval interval-subset? ;
: binary-op-class ( info1 info2 -- newclass )
[ class>> ] bi@
[ [ interval>> ] bi@ ] dip call ; inline
: won't-overflow? ( class interval -- ? )
- [ fixnum class<= ] [ fixnum fits? ] bi* and ;
+ [ fixnum class<= ] [ fits-in-fixnum? ] bi* and ;
: may-overflow ( class interval -- class' interval' )
over null-class? [
[ object-info ] [ f <literal-info> ] if ;
: info-intervals-intersect? ( info1 info2 -- ? )
- [ interval>> ] bi@ intervals-intersect? ;
+ 2dup [ class>> real class<= ] both?
+ [ [ interval>> ] bi@ intervals-intersect? ] [ 2drop t ] if ;
{ number= bignum= float= } [
[
{ >integer integer }
} [
- '[
- _
- [ nip ] [
- [ interval>> ] [ class-interval ] bi*
- interval-intersect
- ] 2bi
- <class/interval-info>
- ] "outputs" set-word-prop
+ '[ _ swap interval>> <class/interval-info> ] "outputs" set-word-prop
] assoc-each
{ numerator denominator }
dup name>> {
{
[ "alien-signed-" ?head ]
- [ string>number 8 * 1- 2^ dup neg swap 1- [a,b] ]
+ [ string>number 8 * 1 - 2^ dup neg swap 1 - [a,b] ]
}
{
[ "alien-unsigned-" ?head ]
- [ string>number 8 * 2^ 1- 0 swap [a,b] ]
+ [ string>number 8 * 2^ 1 - 0 swap [a,b] ]
}
} cond
- [ fixnum fits? fixnum integer ? ] keep <class/interval-info>
+ [ fits-in-fixnum? fixnum integer ? ] keep <class/interval-info>
'[ 2drop _ ] "outputs" set-word-prop
] each