27 lines
851 B
Factor
27 lines
851 B
Factor
! Copyright (C) 2010 Slava Pestov, 2011 Alex Vondrak.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors combinators.short-circuit cpu.architecture fry
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kernel math
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compiler.cfg.instructions
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compiler.cfg.gvn.graph
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compiler.cfg.gvn.avail
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compiler.cfg.gvn.rewrite ;
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IN: compiler.cfg.gvn.slots
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: simplify-slot-addressing? ( insn -- ? )
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complex-addressing? [
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slot>> vreg>insn [ ##add-imm? ] with-available-uses?
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] [ drop f ] if ;
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: simplify-slot-addressing ( insn -- insn/f )
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dup simplify-slot-addressing? [
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clone dup slot>> vreg>insn
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[ src1>> >>slot ]
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[ src2>> over scale>> '[ _ _ shift - ] change-tag ]
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bi
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] [ drop f ] if ;
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M: ##slot rewrite simplify-slot-addressing ;
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M: ##set-slot rewrite simplify-slot-addressing ;
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M: ##write-barrier rewrite simplify-slot-addressing ;
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