diff options
| author |  xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-06-09 08:49:06 +0000 |
|---|---|---|
| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-06-09 08:49:06 +0000 |
| commit | f3250c32ff42ae18fd03a5311c1f0caec3415aba (patch) | |
| tree | b37da52bcf8015c4b29bb8387c30727e2b4de824 /powerpc/ConstpropOpproof.v | |
| parent | 326d33e5b0f9dc0d3ccf6d75c62fedbc3ca085e5 (diff) | |
Make min_int / -1 and min_int % -1 semantically undefined
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1919 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'powerpc/ConstpropOpproof.v')
| -rw-r--r-- | powerpc/ConstpropOpproof.v | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/powerpc/ConstpropOpproof.v b/powerpc/ConstpropOpproof.v index 1c050bd..eef3944 100644 --- a/powerpc/ConstpropOpproof.v +++ b/powerpc/ConstpropOpproof.v @@ -139,7 +139,8 @@ Proof. rewrite Val.sub_add_opp. rewrite Val.add_assoc. simpl. rewrite Int.sub_add_opp. auto. - destruct (Int.eq n2 Int.zero); inv H0; simpl; auto. + destruct (Int.eq n2 Int.zero). inv H0. + destruct (Int.eq n1 (Int.repr Int.min_signed) && Int.eq n2 Int.mone); inv H0; simpl; auto. destruct (Int.eq n2 Int.zero); inv H0; simpl; auto. destruct (Int.ltu n2 Int.iwordsize); simpl; auto. |