diff options
| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-06-09 08:49:06 +0000 |
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| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-06-09 08:49:06 +0000 |
| commit | f3250c32ff42ae18fd03a5311c1f0caec3415aba (patch) | |
| tree | b37da52bcf8015c4b29bb8387c30727e2b4de824 /arm/Op.v | |
| parent | 326d33e5b0f9dc0d3ccf6d75c62fedbc3ca085e5 (diff) | |
| download | compcert-kvx-f3250c32ff42ae18fd03a5311c1f0caec3415aba.tar.gz compcert-kvx-f3250c32ff42ae18fd03a5311c1f0caec3415aba.zip | |
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 'arm/Op.v')
| -rw-r--r-- | arm/Op.v | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -383,7 +383,8 @@ Proof with (try exact I). generalize (S s v1). destruct v0; destruct (eval_shift s v1); simpl; intuition. destruct (zeq b0 b)... destruct v0... destruct v0; destruct v1... - destruct v0; destruct v1; simpl in H0; inv H0. destruct (Int.eq i0 Int.zero); inv H2... + destruct v0; destruct v1; simpl in H0; inv H0. + destruct (Int.eq i0 Int.zero || Int.eq i (Int.repr Int.min_signed) && Int.eq i0 Int.mone); inv H2... destruct v0; destruct v1; simpl in H0; inv H0. destruct (Int.eq i0 Int.zero); inv H2... destruct v0; destruct v1... generalize (S s v1). destruct v0; destruct (eval_shift s v1); simpl; tauto. @@ -841,7 +842,7 @@ Proof. inv H4; inv H2; simpl; auto. inv H4; inv H3; simpl in H1; inv H1. simpl. - destruct (Int.eq i0 Int.zero); inv H2. TrivialExists. + destruct (Int.eq i0 Int.zero || Int.eq i (Int.repr Int.min_signed) && Int.eq i0 Int.mone); inv H2. TrivialExists. inv H4; inv H3; simpl in H1; inv H1. simpl. destruct (Int.eq i0 Int.zero); inv H2. TrivialExists. |