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. --- backend/Linearizeproof.v | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'backend/Linearizeproof.v') diff --git a/backend/Linearizeproof.v b/backend/Linearizeproof.v index 08bcd3f3..dc4d11ea 100644 --- a/backend/Linearizeproof.v +++ b/backend/Linearizeproof.v @@ -644,14 +644,7 @@ Proof. (* Lbuiltin *) left; econstructor; split. simpl. apply plus_one. eapply exec_Lbuiltin; eauto. - eapply external_call_symbols_preserved'; eauto. - exact symbols_preserved. exact public_preserved. exact varinfo_preserved. - econstructor; eauto. - - (* Lannot *) - left; econstructor; split. simpl. - apply plus_one. eapply exec_Lannot; eauto. - eapply eval_annot_args_preserved with (ge1 := ge); eauto. exact symbols_preserved. + eapply eval_builtin_args_preserved with (ge1 := ge); eauto. exact symbols_preserved. eapply external_call_symbols_preserved; eauto. exact symbols_preserved. exact public_preserved. exact varinfo_preserved. econstructor; eauto. -- cgit