diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ChangeLog | 8 | ||||
| -rw-r--r-- | src/algebra/boolean.spad.pamphlet | 4 | ||||
| -rw-r--r-- | src/interp/g-opt.boot | 14 |
3 files changed, 16 insertions, 10 deletions
diff --git a/src/ChangeLog b/src/ChangeLog index f7804a76..80c21881 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,5 +1,13 @@ 2009-03-01 Gabriel Dos Reis <gdr@cs.tamu.edu> + * interp/g-opt.boot (optimize): Remove non-qualified + interpretation of 'false' and 'true'. + (optCond): Emit 'NOT', not 'NULL'. + (optIF2COND): Likewise. + (EqualBarGensym): Tidy. + +2009-03-01 Gabriel Dos Reis <gdr@cs.tamu.edu> + * interp/compiler.boot (compTopLevel): Initialize list of optimizable domain constructors. (processInlineRequest): New. diff --git a/src/algebra/boolean.spad.pamphlet b/src/algebra/boolean.spad.pamphlet index 836e57dd..b38ef042 100644 --- a/src/algebra/boolean.spad.pamphlet +++ b/src/algebra/boolean.spad.pamphlet @@ -523,8 +523,8 @@ KleeneTrivalentLogic(): Public == Private where ++ s case true holds if the value of `x' is `true'. Private == add Rep == Byte -- We need only 3 bits, in fact. - false == per(0::NonNegativeInteger::Byte) - unknown == per(1::NonNegativeInteger::Byte) + false == per(0::Byte) + unknown == per(1::Byte) true == per(2::Byte) x = y == rep x = rep y x case true == x = true diff --git a/src/interp/g-opt.boot b/src/interp/g-opt.boot index 4a0a91af..ff3ea090 100644 --- a/src/interp/g-opt.boot +++ b/src/interp/g-opt.boot @@ -83,8 +83,6 @@ optimize x == RPLAC(first x,optimize optXLAMCond SUBLIS(pairList(argl,a),body)) atom y => optimize rest x - y="true" => RPLAC(first x,'(QUOTE (QUOTE T))) - y="false" => RPLAC(first x,nil) if first y="IF" then (RPLAC(first x,optIF2COND y); y:= first x) op:= GETL(subrname first y,"OPTIMIZE") => (optimize rest x; RPLAC(first x,FUNCALL(op,optimize first x))) @@ -228,15 +226,15 @@ optCond (x is ['COND,:l]) == if l is [a,[aa,b]] and TruthP aa and b is ["COND",:c] then RPLACD(rest x,c) if l is [[p1,:c1],[p2,:c2],:.] then - if (p1 is ['NULL,p1'] and p1' = p2) or (p2 is ['NULL,p2'] and p2' = p1) then + if (p1 is ["NOT",=p2]) or (p2 is ["NOT",=p1]) then l:=[[p1,:c1],['(QUOTE T),:c2]] RPLACD( x,l) c1 is ['NIL] and p2 = '(QUOTE T) and first c2 = '(QUOTE T) => - p1 is ['NULL,p1']=> return p1' - return ['NULL,p1] + p1 is ["NOT",p1']=> return p1' + return ["NOT",p1] l is [[p1,:c1],[p2,:c2],[p3,:c3]] and TruthP p3 => EqualBarGensym(c1,c3) => - ["COND",[["OR",p1,["NULL",p2]],:c1],[['QUOTE,true],:c2]] + ["COND",[["OR",p1,["NOT",p2]],:c1],[['QUOTE,true],:c2]] EqualBarGensym(c1,c2) => ["COND",[["OR",p1,p2],:c1],[['QUOTE,true],:c3]] x for y in tails l repeat @@ -257,7 +255,7 @@ EqualBarGensym(x,y) == fn(x,y) == x=y => true GENSYMP x and GENSYMP y => - z:= assoc(x,$GensymAssoc) => (y=rest z => true; false) + z:= assoc(x,$GensymAssoc) => y=rest z $GensymAssoc:= [[x,:y],:$GensymAssoc] true null x => y is [g] and GENSYMP g @@ -268,7 +266,7 @@ EqualBarGensym(x,y) == --Called early, to change IF to COND optIF2COND ["IF",a,b,c] == - b is "%noBranch" => ["COND",[["NULL",a],c]] + b is "%noBranch" => ["COND",[["NOT",a],c]] c is "%noBranch" => ["COND",[a,b]] c is ["IF",:.] => ["COND",[a,b],:rest optIF2COND c] c is ["COND",:p] => ["COND",[a,b],:p] |