diff options
| -rw-r--r-- | src/ChangeLog | 7 | ||||
| -rw-r--r-- | src/algebra/strap/SYMBOL.lsp | 2 | ||||
| -rw-r--r-- | src/interp/g-opt.boot | 6 |
3 files changed, 14 insertions, 1 deletions
diff --git a/src/ChangeLog b/src/ChangeLog index 7c5e2ac4..17b9cf46 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,5 +1,12 @@ 2010-07-24 Gabriel Dos Reis <gdr@cs.tamu.edu> + * interp/g-opt.boot (optIadd): More simplification if either + operand is zero. + (optIsub): Likewise. + (optImul): More simplifications if either operand is one. + +2010-07-24 Gabriel Dos Reis <gdr@cs.tamu.edu> + * interp/c-util.boot (usedSymbol?): Move to g-util.boot. * interp/nruncomp.boot (NRTsetVector4a): Tidy. diff --git a/src/algebra/strap/SYMBOL.lsp b/src/algebra/strap/SYMBOL.lsp index c2af9d6f..b1cb0a30 100644 --- a/src/algebra/strap/SYMBOL.lsp +++ b/src/algebra/strap/SYMBOL.lsp @@ -610,7 +610,7 @@ (DEFUN |SYMBOL;istring| (|n| $) (COND ((< 9 |n|) (|error| "Can have at most 9 scripts of each kind")) - (T (|getSimpleArrayEntry| (|getShellEntry| $ 18) (+ |n| 0))))) + (T (|getSimpleArrayEntry| (|getShellEntry| $ 18) |n|)))) (DEFUN |SYMBOL;list;$L;34| (|sy| $) (COND diff --git a/src/interp/g-opt.boot b/src/interp/g-opt.boot index 8224b450..47f3ca2d 100644 --- a/src/interp/g-opt.boot +++ b/src/interp/g-opt.boot @@ -714,14 +714,20 @@ optBge ['%bge,a,b] == optIadd(x is ['%iadd,a,b]) == integer? a and integer? b => a + b + integer? a and a = 0 => b + integer? b and b = 0 => a x optIsub(x is ['%isub,a,b]) == integer? a and integer? b => a - b + integer? a and a = 0 => ['%ineg,b] + integer? b and b = 0 => a x optImul(x is ['%imul,a,b]) == integer? a and integer? b => a * b + integer? a and a = 1 => b + integer? b and b = 1 => a x optIneg(x is ['%ineg,a]) == |