1 ! Copyright (C) 2008, 2009 Slava Pestov, Doug Coleman.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: sequences accessors layouts kernel math namespaces
5 compiler.tree.propagation.info
8 compiler.cfg.instructions
10 compiler.cfg.registers
11 compiler.cfg.comparisons ;
12 IN: compiler.cfg.intrinsics.fixnum
14 : emit-both-fixnums? ( -- )
17 tag-mask get ^^and-imm
21 : tag-literal ( n -- tagged )
22 literal>> [ tag-fixnum ] [ \ f tag-number ] if* ;
24 : emit-fixnum-op ( insn -- dst )
25 [ 2inputs ] dip call ds-push ; inline
27 : emit-fixnum-shift-fast ( node -- )
28 dup node-input-infos dup second value-info-small-fixnum? [
30 [ ds-drop ds-pop ] dip
31 second literal>> dup sgn {
32 { -1 [ neg tag-bits get + ^^sar-imm ^^tag-fixnum ] }
37 ] [ drop emit-primitive ] if ;
39 : emit-fixnum-bitnot ( -- )
40 ds-pop ^^not tag-mask get ^^xor-imm ds-push ;
42 : emit-fixnum-log2 ( -- )
43 ds-pop ^^log2 tag-bits get ^^sub-imm ^^tag-fixnum ds-push ;
45 : emit-fixnum*fast ( -- )
46 2inputs ^^untag-fixnum ^^mul ds-push ;
48 : emit-fixnum-comparison ( cc -- )
49 '[ _ ^^compare ] emit-fixnum-op ;
51 : emit-bignum>fixnum ( -- )
52 ds-pop ^^bignum>integer ^^tag-fixnum ds-push ;
54 : emit-fixnum>bignum ( -- )
55 ds-pop ^^untag-fixnum ^^integer>bignum ds-push ;
57 : emit-no-overflow-case ( dst -- final-bb )
58 [ -2 ##inc-d ds-push ] with-branch ;
60 : emit-overflow-case ( word -- final-bb )
61 [ ##call ] with-branch ;
63 : emit-fixnum-overflow-op ( quot word -- )
64 [ [ D 1 ^^peek D 0 ^^peek ] dip call ] dip
65 [ emit-no-overflow-case ] [ emit-overflow-case ] bi* 2array
66 emit-conditional ; inline
68 : fixnum+overflow ( x y -- z ) [ >bignum ] bi@ + ;
70 : fixnum-overflow ( x y -- z ) [ >bignum ] bi@ - ;
72 : fixnum*overflow ( x y -- z ) [ >bignum ] bi@ * ;
75 [ ^^fixnum-add ] \ fixnum+overflow emit-fixnum-overflow-op ;
78 [ ^^fixnum-sub ] \ fixnum-overflow emit-fixnum-overflow-op ;
81 [ ^^untag-fixnum ^^fixnum-mul ] \ fixnum*overflow emit-fixnum-overflow-op ;