diff options
| author |  xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2014-08-17 07:52:12 +0000 |
|---|---|---|
| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2014-08-17 07:52:12 +0000 |
| commit | 17f519651feb4a09aa90c89c949469e8a5ab0e88 (patch) | |
| tree | c7bda5e43a2d1f950180521a1b854ac9592eea73 /backend/CMtypecheck.ml | |
| parent | 88613c0f5415a0d3f2e0e0e9ff74bd32b6b4685e (diff) | |
- Support "switch" statements over 64-bit integers
(in CompCert C to Cminor, included)
- Translation of "switch" to decision trees or jumptables made generic
over the sizes of integers and moved to the Cminor->CminorSel pass
instead of CminorSel->RTL as before.
- CminorSel: add "exitexpr" to support the above.
- ValueDomain: more precise analysis of comparisons against an integer
literal. E.g. "x >=u 0" is always true.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2565 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'backend/CMtypecheck.ml')
| -rw-r--r-- | backend/CMtypecheck.ml | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/backend/CMtypecheck.ml b/backend/CMtypecheck.ml index 02c3f21..aacbf86 100644 --- a/backend/CMtypecheck.ml +++ b/backend/CMtypecheck.ml @@ -313,8 +313,8 @@ let rec type_stmt env blk ret s = | Sexit n -> if Nat.to_int n >= blk then raise (Error (sprintf "Bad exit(%d)\n" (Nat.to_int n))) - | Sswitch(e, cases, deflt) -> - unify (type_expr env [] e) tint + | Sswitch(islong, e, cases, deflt) -> + unify (type_expr env [] e) (if islong then tlong else tint) | Sreturn None -> begin match ret with | None -> () |