diff options
Diffstat (limited to 'powerpc/ConstpropOp.vp')
| -rw-r--r-- | powerpc/ConstpropOp.vp | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/powerpc/ConstpropOp.vp b/powerpc/ConstpropOp.vp index 0ed92e90..f18a72e9 100644 --- a/powerpc/ConstpropOp.vp +++ b/powerpc/ConstpropOp.vp @@ -124,12 +124,15 @@ Definition make_mulimm (n: int) (r1 r2: reg) := end. Definition make_divimm (n: int) (r1 r2: reg) := - match Int.is_power2 n with - | Some l => if Int.ltu l (Int.repr 31) - then (Oshrximm l, r1 :: nil) - else (Odiv, r1 :: r2 :: nil) - | None => (Odiv, r1 :: r2 :: nil) - end. + if Int.eq n Int.one then + (Omove, r1 :: nil) + else + match Int.is_power2 n with + | Some l => if Int.ltu l (Int.repr 31) + then (Oshrximm l, r1 :: nil) + else (Odiv, r1 :: r2 :: nil) + | None => (Odiv, r1 :: r2 :: nil) + end. Definition make_divuimm (n: int) (r1 r2: reg) := match Int.is_power2 n with |