1 ! Copyright (C) 2010 Slava Pestov.
2 ! See https://factorcode.org/license.txt for BSD license.
3 USING: accessors combinators combinators.short-circuit
4 compiler.cfg.instructions compiler.cfg.value-numbering.graph
5 cpu.architecture kernel layouts math ;
6 IN: compiler.cfg.value-numbering.rewrite
8 ! Outputs f to mean no change
9 GENERIC: rewrite ( insn -- insn/f )
11 M: insn rewrite drop f ;
14 GENERIC: insn>integer ( insn -- n )
16 M: ##load-integer insn>integer val>> ;
18 : vreg>integer ( vreg -- n ) vreg>insn insn>integer ; inline
20 : vreg-immediate-arithmetic? ( vreg -- ? )
23 [ val>> immediate-arithmetic? ]
26 : vreg-immediate-bitwise? ( vreg -- ? )
29 [ val>> immediate-bitwise? ]
32 UNION: literal-insn ##load-integer ##load-reference ;
34 GENERIC: insn>literal ( insn -- n )
36 M: ##load-integer insn>literal val>> >fixnum ;
38 M: ##load-reference insn>literal obj>> ;
40 : vreg>literal ( vreg -- n ) vreg>insn insn>literal ; inline
42 : vreg-immediate-comparand? ( vreg -- ? )
44 { [ dup ##load-integer? ] [ val>> tag-fixnum immediate-comparand? ] }
45 { [ dup ##load-reference? ] [ obj>> immediate-comparand? ] }