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When optimizing nonconst * const, cast the result to the type of the operator.

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Per bug report by @Welcius.

Fixes #8.
This commit is contained in:
Sei Lisa 2019-07-02 15:40:20 +02:00
parent 750465f17b
commit 1bdaff32ab
5 changed files with 46 additions and 5 deletions
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15
lslopt/lslfoldconst.py
View file

@ -1204,24 +1204,29 @@ class foldconst(object):
and b == 1 and val in (-1, 1)
):
if val == 1:
parent[index] = child[a]
parent[index] = self.Cast(child[a], optype)
self.FoldTree(parent, index)
return
if val == 0:
if child[a].SEF:
parent[index] = child[b]
parent[index] = self.Cast(child[b], optype)
self.FoldTree(parent, index)
return
if val == -1:
# Note 0.0*-1 equals -0.0 in LSL, so this is safe
node = parent[index] = nr(nt='NEG', t=node.t,
ch=[child[a]], SEF=child[a].SEF)
ch=[self.Cast(child[a], optype)],
SEF=child[a].SEF)
self.FoldTree(parent, index)
return
# only -2, 2 remain
if child[a].nt == 'IDENT' and self.isLocalVar(child[a]):
child[b] = child[a].copy()
child[b] = self.Cast(child[a].copy(), optype)
node.nt = '+'
if val == -2:
parent[index] = nr(nt='NEG', t=node.t,
parent[index] = nr(nt='NEG', t=optype,
ch=[node], SEF=node.SEF)
self.FoldTree(parent, index)
return
return

3
unit_tests/expr.suite/casts.lsl
View file

@ -132,4 +132,7 @@
, llSin(-2147483648)
, llSin(2147483647)
, llSin(2147483647.0)
, 2147483647 * 1.0 * 2
, 3 * 1.0 / 2
, 3 / 2
]

3
unit_tests/expr.suite/casts.out
View file

@ -128,4 +128,7 @@
, 0.9713102
, -0.9713102
, -0.9713102
, 4294967296.
, 1.5
, 1
]

14
unit_tests/regression.suite/issue-8.lsl Normal file
View file

@ -0,0 +1,14 @@
default{timer(){
integer x = llGetNumberOfPrims();
integer y = llGetUnixTime();
llOwnerSay((string)(x * 1.0 / y));
llOwnerSay((string)(x / 1.0 / y));
llOwnerSay((string)(x / (-1.0) / y));
llOwnerSay((string)(x * 1.0 / y));
llOwnerSay((string)(x * (-1.0) / y));
llOwnerSay((string)(x * -2.0));
llOwnerSay((string)(x * 0.0 + y));
llOwnerSay((string)(x + 0.0 + y));
}}

16
unit_tests/regression.suite/issue-8.out Normal file
View file

@ -0,0 +1,16 @@
default
{
timer()
{
integer x = llGetNumberOfPrims();
integer y = llGetUnixTime();
llOwnerSay((string)((float)x / y));
llOwnerSay((string)((float)x / y));
llOwnerSay((string)(-(float)x / y));
llOwnerSay((string)((float)x / y));
llOwnerSay((string)(-(float)x / y));
llOwnerSay((string)(-(x + (float)x)));
llOwnerSay((string)((float)y));
llOwnerSay((string)((float)x + y));
}
}