##compare-integer
Basic block instructions

Prev:	##compare-imm-branch
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Vocabulary
compiler.cfg.instructions

Class description
This instruction is emitted for fixnum comparisons.

See also
emit-fixnum-comparison

Definition

IN: compiler.cfg.instructions

TUPLE: ##compare-integer < foldable-insn
    dst src1 src2 cc temp insn# ;

Methods

USING: accessors compiler.cfg.gvn.avail
compiler.cfg.instructions kernel ;

M: ##compare-integer >avail-insn-defs [ ] change-dst drop ;


USING: accessors compiler.cfg.gvn.avail
compiler.cfg.instructions kernel ;

M: ##compare-integer >avail-insn-temps [ ] change-temp drop ;


USING: accessors compiler.cfg.gvn.avail
compiler.cfg.instructions kernel ;

M: ##compare-integer >avail-insn-uses
    [ dup >avail-vreg or* ] change-src1
    [ dup >avail-vreg or* ] change-src2 drop ;


USING: accessors arrays compiler.cfg.gvn.expressions
compiler.cfg.gvn.graph compiler.cfg.instructions kernel
sequences.private ;

M: ##compare-integer >expr
    \ ##compare-integer swap [ src1>> vreg>vn ] keep
    [ src2>> vreg>vn ] keep [ cc>> ] keep drop 4 f <array>
    3 swap [ set-array-nth ] keep 2 swap [ set-array-nth ] keep
    1 swap [ set-array-nth ] keep 0 swap [ set-array-nth ] keep
    ;


USING: accessors arrays compiler.cfg.instructions
compiler.cfg.value-numbering.expressions
compiler.cfg.value-numbering.graph kernel sequences.private ;

M: ##compare-integer >expr
    \ ##compare-integer swap [ src1>> vreg>vn ] keep
    [ src2>> vreg>vn ] keep [ cc>> ] keep drop 4 f <array>
    3 swap [ set-array-nth ] keep 2 swap [ set-array-nth ] keep
    1 swap [ set-array-nth ] keep 0 swap [ set-array-nth ] keep
    ;


USING: accessors compiler.cfg.instructions
compiler.cfg.linear-scan.assignment kernel ;

M: ##compare-integer assign-insn-defs
    [ vreg>reg ] change-dst drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.linear-scan.assignment kernel ;

M: ##compare-integer assign-insn-temps
    [ vreg>reg ] change-temp drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.linear-scan.assignment kernel ;

M: ##compare-integer assign-insn-uses
    [ vreg>reg ] change-src1 [ vreg>reg ] change-src2 drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.representations.rewrite kernel ;

M: ##compare-integer convert-insn-defs
    [ converted-value ] change-dst drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.representations.rewrite kernel ;

M: ##compare-integer convert-insn-temps [ ] change-temp drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.representations.rewrite kernel ;

M: ##compare-integer convert-insn-uses
    [ converted-value ] change-src1
    [ converted-value ] change-src2 drop ;


USING: compiler.cfg.instructions
compiler.cfg.representations.preferred cpu.architecture kernel ;

M: ##compare-integer defs-vreg-reps drop { tagged-rep } ;


USING: accessors arrays compiler.cfg.def-use
compiler.cfg.instructions ;

M: ##compare-integer defs-vregs dst>> 1array ;


USING: accessors compiler.cfg.instructions compiler.codegen
cpu.architecture kernel ;

M: ##compare-integer generate-insn
    [ dst>> ] keep [ src1>> ] keep [ src2>> ] keep [ cc>> ] keep
    [ temp>> ] keep drop %compare ;


USING: combinators combinators.short-circuit
compiler.cfg.instructions compiler.cfg.representations.peephole
generic kernel ;

M: ##compare-integer optimize-insn
    {
        {
            [ dup { [ src1-tagged? ] [ src2-tagged? ] } 1&& ]
            [ unchanged ]
        }
        [
            M\ ##compare-integer optimize-insn
            (call-next-method)
        ]
    } cond ;


USING: accessors compiler.cfg.instructions compiler.cfg.renaming
kernel ;

M: ##compare-integer rename-insn-defs
    [ rename-value ] change-dst drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.registers compiler.cfg.renaming kernel ;

M: ##compare-integer rename-insn-temps
    [ drop next-vreg ] change-temp drop ;


USING: accessors compiler.cfg.instructions compiler.cfg.renaming
kernel ;

M: ##compare-integer rename-insn-uses
    [ rename-value ] change-src1 [ rename-value ] change-src2
    drop ;


USING: accessors combinators compiler.cfg.gvn.comparisons
compiler.cfg.gvn.math compiler.cfg.gvn.rewrite
compiler.cfg.instructions kernel ;

M: ##compare-integer rewrite
    {
        {
            [ dup src1>> vreg-immediate-arithmetic? ]
            [ t >compare-integer-imm ]
        }
        {
            [ dup src2>> vreg-immediate-arithmetic? ]
            [ f >compare-integer-imm ]
        }
        { [ dup diagonal? ] [ rewrite-self-compare ] }
        [ drop f ]
    } cond ;


USING: accessors combinators compiler.cfg.instructions
compiler.cfg.value-numbering.comparisons
compiler.cfg.value-numbering.math
compiler.cfg.value-numbering.rewrite kernel ;

M: ##compare-integer rewrite
    {
        {
            [ dup src1>> vreg-immediate-arithmetic? ]
            [ t >compare-integer-imm ]
        }
        {
            [ dup src2>> vreg-immediate-arithmetic? ]
            [ f >compare-integer-imm ]
        }
        { [ dup diagonal? ] [ rewrite-self-compare ] }
        [ drop f ]
    } cond ;


USING: accessors compiler.cfg.instructions
compiler.cfg.ssa.construction.private kernel ;

M: ##compare-integer ssa-rename-insn-defs
    [ gen-name ] change-dst drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.ssa.construction.private kernel ;

M: ##compare-integer ssa-rename-insn-temps
    [ ] change-temp drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.ssa.construction.private kernel ;

M: ##compare-integer ssa-rename-insn-uses
    [ top-name ] change-src1 [ top-name ] change-src2 drop ;


USING: compiler.cfg.instructions
compiler.cfg.representations.preferred cpu.architecture kernel ;

M: ##compare-integer temp-vreg-reps drop { int-rep } ;


USING: accessors arrays compiler.cfg.def-use
compiler.cfg.instructions ;

M: ##compare-integer temp-vregs temp>> 1array ;


USING: compiler.cfg.instructions
compiler.cfg.representations.preferred cpu.architecture kernel ;

M: ##compare-integer uses-vreg-reps drop { int-rep int-rep } ;


USING: accessors arrays compiler.cfg.def-use
compiler.cfg.instructions kernel ;

M: ##compare-integer uses-vregs
    [ src1>> ] [ src2>> ] bi 2array ;