Remove old local DCE pass

basis/compiler/cfg/dead-code/dead-code-tests.factor

@@ -1,9 +0,0 @@
-USING: compiler.cfg.dead-code compiler.cfg.instructions
-compiler.cfg.registers compiler.cfg.debugger
-cpu.architecture tools.test ;
-IN: compiler.cfg.dead-code.tests
-
-[ { } ] [
-    { T{ ##load-immediate f V int-regs 134 16 } }
-    eliminate-dead-code
-] unit-test

basis/compiler/cfg/dead-code/dead-code.factor

@@ -1,61 +0,0 @@
-! Copyright (C) 2008 Slava Pestov.
-! See http://factorcode.org/license.txt for BSD license.
-USING: accessors assocs sets kernel namespaces sequences
-compiler.cfg.instructions compiler.cfg.def-use ;
-IN: compiler.cfg.dead-code
-
-! Dead code elimination -- assumes compiler.cfg.alias-analysis
-! has already run.
-
-! Maps vregs to sequences of vregs
-SYMBOL: liveness-graph
-
-! vregs which participate in side effects and thus are always live
-SYMBOL: live-vregs
-
-! mapping vregs to stack locations
-SYMBOL: vregs>locs
-
-: init-dead-code ( -- )
-    H{ } clone liveness-graph set
-    H{ } clone live-vregs set
-    H{ } clone vregs>locs set ;
-
-GENERIC: compute-liveness ( insn -- )
-
-M: ##flushable compute-liveness
-    [ uses-vregs ] [ dst>> ] bi liveness-graph get set-at ;
-
-M: ##peek compute-liveness
-    [ [ loc>> ] [ dst>> ] bi vregs>locs get set-at ]
-    [ call-next-method ]
-    bi ;
-
-: live-replace? ( ##replace -- ? )
-    [ src>> vregs>locs get at ] [ loc>> ] bi = not ;
-
-M: ##replace compute-liveness
-    dup live-replace? [ call-next-method ] [ drop ] if ;
-
-: record-live ( vregs -- )
-    [
-        dup live-vregs get key? [ drop ] [
-            [ live-vregs get conjoin ]
-            [ liveness-graph get at record-live ]
-            bi
-        ] if
-    ] each ;
-
-M: insn compute-liveness uses-vregs record-live ;
-
-GENERIC: live-insn? ( insn -- ? )
-
-M: ##flushable live-insn? dst>> live-vregs get key? ;
-
-M: ##replace live-insn? live-replace? ;
-
-M: insn live-insn? drop t ;
-
-: eliminate-dead-code ( insns -- insns' )
-    init-dead-code
-    [ [ compute-liveness ] each ] [ [ live-insn? ] filter ] bi ;

basis/compiler/cfg/dead-code/summary.txt

@@ -1 +0,0 @@
-Dead-code elimination