diff options
author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-02-04 19:14:14 +0000 |
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committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-02-04 19:14:14 +0000 |
commit | 25b9b003178002360d666919f2e49e7f5f4a36e2 (patch) | |
tree | d5f7fb317f34f3a7ac9383c21b0eb143317c30f8 /powerpc/SelectOp.vp | |
parent | 145b32ec504541e98f73b2c87ff2d8181b5e7968 (diff) |
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
Diffstat (limited to 'powerpc/SelectOp.vp')
-rw-r--r-- | powerpc/SelectOp.vp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/powerpc/SelectOp.vp b/powerpc/SelectOp.vp index 3bb5544..08968f7 100644 --- a/powerpc/SelectOp.vp +++ b/powerpc/SelectOp.vp @@ -69,7 +69,20 @@ Nondetfunction notint (e: expr) := | _ => Elet e (Eop Onor (Eletvar O ::: Eletvar O ::: 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 |