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/CMparser.mly | 6 ------ 1 file changed, 6 deletions(-) (limited to 'backend/CMparser.mly') diff --git a/backend/CMparser.mly b/backend/CMparser.mly index f62e05d4..b48a486e 100644 --- a/backend/CMparser.mly +++ b/backend/CMparser.mly @@ -42,12 +42,6 @@ let mkef sg toks = EF_vload c | [EFT_tok "volatile"; EFT_tok "store"; EFT_chunk c] -> EF_vstore c - | [EFT_tok "volatile"; EFT_tok "load"; EFT_chunk c; - EFT_tok "global"; EFT_string s; EFT_int n] -> - EF_vload_global(c, intern_string s, coqint_of_camlint n) - | [EFT_tok "volatile"; EFT_tok "store"; EFT_chunk c; - EFT_tok "global"; EFT_string s; EFT_int n] -> - EF_vstore_global(c, intern_string s, coqint_of_camlint n) | [EFT_tok "malloc"] -> EF_malloc | [EFT_tok "free"] -> -- cgit