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-rw-r--r--ia32/SelectOp.vp14
1 files changed, 8 insertions, 6 deletions
diff --git a/ia32/SelectOp.vp b/ia32/SelectOp.vp
index 0c30386d..7f79a4f7 100644
--- a/ia32/SelectOp.vp
+++ b/ia32/SelectOp.vp
@@ -264,14 +264,16 @@ Nondetfunction or (e1: expr) (e2: expr) :=
| Eop (Ointconst n1) Enil, t2 => orimm n1 t2
| t1, Eop (Ointconst n2) Enil => orimm n2 t1
| Eop (Oshlimm n1) (t1:::Enil), Eop (Oshruimm n2) (t2:::Enil) =>
- if Int.eq (Int.add n1 n2) Int.iwordsize
- && same_expr_pure t1 t2
- then Eop (Ororimm n2) (t1:::Enil)
+ if Int.eq (Int.add n1 n2) Int.iwordsize then
+ if same_expr_pure t1 t2
+ then Eop (Ororimm n2) (t1:::Enil)
+ else Eop (Oshldimm n1) (t1:::t2:::Enil)
else Eop Oor (e1:::e2:::Enil)
| Eop (Oshruimm n2) (t2:::Enil), Eop (Oshlimm n1) (t1:::Enil) =>
- if Int.eq (Int.add n1 n2) Int.iwordsize
- && same_expr_pure t1 t2
- then Eop (Ororimm n2) (t1:::Enil)
+ if Int.eq (Int.add n1 n2) Int.iwordsize then
+ if same_expr_pure t1 t2
+ then Eop (Ororimm n2) (t1:::Enil)
+ else Eop (Oshldimm n1) (t1:::t2:::Enil)
else Eop Oor (e1:::e2:::Enil)
| _, _ =>
Eop Oor (e1:::e2:::Enil)