From 54f97d1988f623ba7422e13a504caeb5701ba93c Mon Sep 17 00:00:00 2001 From: Xavier Leroy Date: Fri, 21 Aug 2015 11:05:36 +0200 Subject: Refactoring of builtins and annotations in the back-end. Before, the back-end languages had distinct instructions - Iannot for annotations, taking structured expressions (annot_arg) as arguments, and producing no results' - Ibuiltin for other builtins, using simple pseudoregs/locations/registers as arguments and results. This branch enriches Ibuiltin instructions so that they take structured expressions (builtin_arg and builtin_res) as arguments and results. This way, - Annotations fit the general pattern of builtin functions, so Iannot instructions are removed. - EF_vload_global and EF_vstore_global become useless, as the same optimization can be achieved by EF_vload/vstore taking a structured argument of the "address of global" kind. - Better code can be generated for builtin_memcpy between stack locations, or volatile accesses to stack locations. Finally, this commit also introduces a new kind of external function, EF_debug, which is like EF_annot but produces no observable events. It will be used later to transport debug info through the back-end, without preventing optimizations. --- ia32/SelectOpproof.v | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'ia32/SelectOpproof.v') diff --git a/ia32/SelectOpproof.v b/ia32/SelectOpproof.v index 50f0d9b6..d40ec7af 100644 --- a/ia32/SelectOpproof.v +++ b/ia32/SelectOpproof.v @@ -898,12 +898,12 @@ Proof. exists (v :: nil); split. constructor; auto. constructor. subst; simpl. rewrite Int.add_zero; auto. Qed. -Theorem eval_annot_arg: +Theorem eval_builtin_arg: forall a v, eval_expr ge sp e m nil a v -> - CminorSel.eval_annot_arg ge sp e m (annot_arg a) v. + CminorSel.eval_builtin_arg ge sp e m (builtin_arg a) v. Proof. - intros until v. unfold annot_arg; case (annot_arg_match a); intros; InvEval. + intros until v. unfold builtin_arg; case (builtin_arg_match a); intros; InvEval. - constructor. - constructor. - constructor. -- cgit