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| 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 /ia32/Op.v | |
| parent | 326d33e5b0f9dc0d3ccf6d75c62fedbc3ca085e5 (diff) | |
| download | compcert-f3250c32ff42ae18fd03a5311c1f0caec3415aba.tar.gz compcert-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 'ia32/Op.v')
| -rw-r--r-- | ia32/Op.v | 14 |
1 files changed, 8 insertions, 6 deletions
@@ -361,9 +361,11 @@ Proof with (try exact I). destruct v0; destruct v1... simpl. destruct (zeq b b0)... destruct v0; destruct v1... destruct v0... + destruct v0; destruct v1; simpl in *; 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 *; inv H0. destruct (Int.eq i0 Int.zero); inv H2... - destruct v0; destruct v1; simpl in *; inv H0. destruct (Int.eq i0 Int.zero); inv H2... - destruct v0; destruct v1; simpl in *; inv H0. destruct (Int.eq i0 Int.zero); inv H2... + destruct v0; destruct v1; simpl in *; 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 *; inv H0. destruct (Int.eq i0 Int.zero); inv H2... destruct v0; destruct v1... destruct v0... @@ -837,12 +839,12 @@ Proof. rewrite Int.sub_shifted. auto. inv H4; inv H2; simpl; auto. inv H4; simpl; auto. + inv H4; inv H3; simpl in H1; inv H1. simpl. + 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. - inv H4; inv H3; simpl in H1; inv H1. simpl. - destruct (Int.eq i0 Int.zero); inv H2. TrivialExists. - inv H4; inv H3; simpl in H1; inv H1. simpl. - destruct (Int.eq i0 Int.zero); inv H2. TrivialExists. + inv H4; inv H3; simpl in H1; inv H1. simpl. + 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. inv H4; inv H2; simpl; auto. |