diff options
Diffstat (limited to 'powerpc/SelectOp.vp')
| -rw-r--r-- | powerpc/SelectOp.vp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/powerpc/SelectOp.vp b/powerpc/SelectOp.vp index 40c9011..3bb5544 100644 --- a/powerpc/SelectOp.vp +++ b/powerpc/SelectOp.vp @@ -210,6 +210,13 @@ Nondetfunction andimm (n1: int) (e2: expr) := match e2 with | Eop (Ointconst n2) Enil => Eop (Ointconst (Int.and n1 n2)) Enil + | Eop (Oandimm n2) (Eop (Oshrimm amount) (t2:::Enil) ::: Enil) => + let n := Int.and n1 n2 in + if Int.eq (Int.shru (Int.shl n amount) amount) n + && Int.ltu amount Int.iwordsize + then rolm t2 (Int.sub Int.iwordsize amount) + (Int.and (Int.shru Int.mone amount) n) + else Eop (Oandimm n) (Eop (Oshrimm amount) (t2:::Enil) ::: Enil) | Eop (Oandimm n2) (t2:::Enil) => Eop (Oandimm (Int.and n1 n2)) (t2:::Enil) | Eop (Orolm amount2 mask2) (t2:::Enil) => |