diff options
Diffstat (limited to 'backend/Selection.v')
| -rw-r--r-- | backend/Selection.v | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/backend/Selection.v b/backend/Selection.v index ca1f1619..e4be867f 100644 --- a/backend/Selection.v +++ b/backend/Selection.v @@ -348,7 +348,11 @@ Inductive stmt_class : Type := Fixpoint classify_stmt (s: Cminor.stmt) : stmt_class := match s with | Cminor.Sskip => SCskip - | Cminor.Sassign id a => SCassign id a + | Cminor.Sassign id a => + match a with + | Cminor.Evar id2 => if ident_eq id id2 then SCskip else SCassign id a + | _ => SCassign id a + end | Cminor.Sbuiltin None (EF_debug _ _ _) _ => SCskip | Cminor.Sseq s1 s2 => match classify_stmt s1, classify_stmt s2 with |