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author | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2019-05-26 18:44:46 +0200 |
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committer | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2019-05-26 18:44:46 +0200 |
commit | c36514ac4b05f78dd2e02fab3f8886cab8234925 (patch) | |
tree | 2c3cc9281942d801a0b889e2452bd59c92815cf7 /powerpc/SelectOpproof.v | |
parent | 546ca4827a033210d8cd94fe72721c7b0b364e11 (diff) | |
download | compcert-kvx-c36514ac4b05f78dd2e02fab3f8886cab8234925.tar.gz compcert-kvx-c36514ac4b05f78dd2e02fab3f8886cab8234925.zip |
PowerPC: add SelectOp.select function
This function and its proof should have been part of commit 43e7b67.
They are already there for the other ports.
Diffstat (limited to 'powerpc/SelectOpproof.v')
-rw-r--r-- | powerpc/SelectOpproof.v | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/powerpc/SelectOpproof.v b/powerpc/SelectOpproof.v index 5f87d9b9..5bf25722 100644 --- a/powerpc/SelectOpproof.v +++ b/powerpc/SelectOpproof.v @@ -1000,6 +1000,26 @@ Proof. exists (Val.singleoffloat v); split. EvalOp. inv D; auto. Qed. +Theorem eval_select: + forall le ty cond al vl a1 v1 a2 v2 a b, + select ty cond al a1 a2 = Some a -> + eval_exprlist ge sp e m le al vl -> + eval_expr ge sp e m le a1 v1 -> + eval_expr ge sp e m le a2 v2 -> + eval_condition cond vl m = Some b -> + exists v, + eval_expr ge sp e m le a v + /\ Val.lessdef (Val.select (Some b) v1 v2 ty) v. +Proof. + unfold select; intros. + destruct (match ty with Tint => true | Tlong => Archi.ppc64 | _ => false end); inv H. + exists (Val.select (Some b) v1 v2 ty); split. + apply eval_Eop with (v1 :: v2 :: vl). + constructor; auto. constructor; auto. + simpl. rewrite H3; auto. + auto. +Qed. + Theorem eval_addressing: forall le chunk a v b ofs, eval_expr ge sp e m le a v -> |