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| author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-05-11 07:59:11 +0200 |
|---|---|---|
| committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-05-11 07:59:11 +0200 |
| commit | ae22df3c5ef0a60527ea85b83bb71e8c95a6ab9c (patch) | |
| tree | c9a29a001c7ca63d607c335a4b767b54736b8744 /mppa_k1c/ExtValues.v | |
| parent | 428af5f71a063962e53e4ab58eaa372ccc926394 (diff) | |
| download | compcert-kvx-ae22df3c5ef0a60527ea85b83bb71e8c95a6ab9c.tar.gz compcert-kvx-ae22df3c5ef0a60527ea85b83bb71e8c95a6ab9c.zip | |
Pmsub compiled
Diffstat (limited to 'mppa_k1c/ExtValues.v')
| -rw-r--r-- | mppa_k1c/ExtValues.v | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mppa_k1c/ExtValues.v b/mppa_k1c/ExtValues.v index 1aa17458..0d56fd1c 100644 --- a/mppa_k1c/ExtValues.v +++ b/mppa_k1c/ExtValues.v @@ -131,3 +131,19 @@ Definition val_shrxl (v1 v2: val): val := else Vundef | _, _ => Vundef end. + +Lemma sub_add_neg : + forall x y, Val.sub x y = Val.add x (Val.neg y). +Proof. + destruct x; destruct y; simpl; trivial. + f_equal. + apply Int.sub_add_opp. +Qed. + +Lemma neg_mul_distr_r : + forall x y, Val.neg (Val.mul x y) = Val.mul x (Val.neg y). +Proof. + destruct x; destruct y; simpl; trivial. + f_equal. + apply Int.neg_mul_distr_r. +Qed.
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