Displaying 1 result from an estimated 1 matches for "foldphiopargintophi".
2017 Jan 29
3
Folding zext from i1 into PHI nodes with only zwo incoming values.
Hi,
AFAICT there are two places where zext instructions may get folded into PHI
nodes. One is FoldPHIArgZextsIntoPHI and the other is the more generic
FoldPHIArgOpIntoPHI. Now, the former only handles PHIs with more than 2
incoming values, while the latter only handles casts where the source type
is legal.
This means that for an PHI node with two incoming i8 values, both resulting
from `zext i1