Merge of the "volatile" branch:

- native treatment of volatile accesses in CompCert C's semantics
- translation of volatile accesses to built-ins in SimplExpr
- native treatment of struct assignment and passing struct parameter by value
- only passing struct result by value remains emulated
- in cparser, remove emulations that are no longer used
- added C99's type _Bool and used it to express || and && more efficiently.


git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1814 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

1 files changed, 15 insertions, 2 deletions

diff --git a/arm/SelectOp.vp b/arm/SelectOp.vp
index 432db948..7b8851c9 100644
--- a/arm/SelectOp.vp
+++ b/arm/SelectOp.vp
@@ -68,11 +68,24 @@ Nondetfunction notint (e: expr) :=
   | _ => Eop Onot (e:::Enil)
   end.
 
-(** ** Boolean negation *)
+(** ** Boolean value and boolean negation *)
+
+Fixpoint boolval (e: expr) {struct e} : expr :=
+  let default := Eop (Ocmp (Ccompuimm Cne Int.zero)) (e ::: Enil) in
+  match e with 
+  | Eop (Ointconst n) Enil =>
+      Eop (Ointconst (if Int.eq n Int.zero then Int.zero else Int.one)) Enil
+  | Eop (Ocmp cond) args =>
+      Eop (Ocmp cond) args
+  | Econdition e1 e2 e3 =>
+      Econdition e1 (boolval e2) (boolval e3)
+  | _ =>
+      default
+  end.
 
 Fixpoint notbool (e: expr) {struct e} : expr :=
   let default := Eop (Ocmp (Ccompuimm Ceq Int.zero)) (e ::: Enil) in
-  match e with
+  match e with 
   | Eop (Ointconst n) Enil =>
       Eop (Ointconst (if Int.eq n Int.zero then Int.one else Int.zero)) Enil
   | Eop (Ocmp cond) args =>