Fix #8404 JS backend doesn't handle float->int type conversion (#15950) [backport]

* Fix #8404 JS backend doesn't handle float->int type conversion
* handle conv to uint as cast, discard other cases
* limit to int32, times use int64
* toInt including tyInt64 break times timezones lib, ignore for now
* also affect to vm
* move to tests/misc/t8404.nim

(cherry picked from commit 797cb2e67b)
This commit is contained in:
Bung
2020-11-13 20:44:48 +08:00
committed by narimiran
parent 6c5eaa955d
commit a832fa65c4
2 changed files with 42 additions and 3 deletions

View File

@@ -2124,11 +2124,17 @@ proc genConv(p: PProc, n: PNode, r: var TCompRes) =
if dest.kind == src.kind:
# no-op conversion
return
case dest.kind:
of tyBool:
let toInt = (dest.kind in tyInt..tyInt32)
let fromInt = (src.kind in tyInt..tyInt32)
let toUint = (dest.kind in tyUInt..tyUInt32)
let fromUint = (src.kind in tyUInt..tyUInt32)
if toUint and (fromInt or fromUint):
let trimmer = unsignedTrimmer(dest.size)
r.res = "($1 $2)" % [r.res, trimmer]
elif dest.kind == tyBool:
r.res = "(!!($1))" % [r.res]
r.kind = resExpr
of tyInt:
elif toInt:
r.res = "(($1)|0)" % [r.res]
else:
# TODO: What types must we handle here?