diff options
Diffstat (limited to 'src/interp/g-opt.boot')
| -rw-r--r-- | src/interp/g-opt.boot | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/src/interp/g-opt.boot b/src/interp/g-opt.boot index 8110587e..38613f11 100644 --- a/src/interp/g-opt.boot +++ b/src/interp/g-opt.boot @@ -392,16 +392,31 @@ optLESSP u == ['GREATERP,b,a] u -$simpleVMoperators == - '(CONS CAR CDR LENGTH SIZE EQUAL EQL EQ NOT NULL OR AND - SPADfirst QVELT _+ _- _* _< _= ASH INTEGER_-LENGTH +++ List of VM side effect free operators. +$VMsideEffectFreeOperators == + '(CAR CDR LENGTH SIZE EQUAL EQL EQ NOT NULL OR AND + SPADfirst QVELT _+ _- _* _< _= _<_= _> _>_= ASH INTEGER_-LENGTH QEQCAR QCDR QCAR INTEGERP FLOATP STRINGP IDENTP SYMBOLP - MINUSP GREATERP) + MINUSP GREATERP ZEROP ODDP FLOAT_-RADIX FLOAT FLOAT_-SIGN FLOAT_-DIGITS + CGREATERP GGREATERP CHAR BOOLE GET BVEC_-GREATER FUNCALL) -isSimpleVMForm form == +++ List of simple VM operators +$simpleVMoperators == + append($VMsideEffectFreeOperators, + ["CONS","LIST","VECTOR","STRINGIMAGE", + "MAKE-FULL-CVEC","BVEC-MAKE-FULL","COND"]) + +++ Return true if the `form' is semi-simple with respect to +++ to the list of operators `ops'. +semiSimpleRelativeTo?(form,ops) == isAtomicForm form => true - form is [op,:args] and MEMQ(op,$simpleVMoperators) - and ("and"/[isAtomicForm arg for arg in args]) + form isnt [op,:args] or not MEMQ(op,ops) => false + and/[semiSimpleRelativeTo?(f,ops) for f in args] + +++ Return true if `form' is a simple VM form. +++ See $simpleVMoperators for the definition of simple operators. +isSimpleVMForm form == + semiSimpleRelativeTo?(form,$simpleVMoperators) ++ Return true if `form' is a VM form whose evaluation does not depend ++ on the program point where it is evaluated. |