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/TargetPrinter.ml | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'ia32/TargetPrinter.ml') diff --git a/ia32/TargetPrinter.ml b/ia32/TargetPrinter.ml index 18aacebf..581c84e2 100644 --- a/ia32/TargetPrinter.ml +++ b/ia32/TargetPrinter.ml @@ -658,20 +658,17 @@ module Target(System: SYSTEM):TARGET = assert false | Pbuiltin(ef, args, res) -> begin match ef with + | EF_annot(txt, targs) -> + print_annot_stmt oc (extern_atom txt) targs args | EF_inline_asm(txt, sg, clob) -> fprintf oc "%s begin inline assembly\n\t" comment; - print_inline_asm preg oc (extern_atom txt) sg args res; + print_inline_asm preg oc (extern_atom txt) sg + (params_of_builtin_args args) + (params_of_builtin_res res); fprintf oc "%s end inline assembly\n" comment | _ -> assert false end - | Pannot(ef, args) -> - begin match ef with - | EF_annot(txt, targs) -> - print_annot_stmt oc (extern_atom txt) targs args - | _ -> - assert false - end let print_literal64 oc (lbl, n) = fprintf oc "%a: .quad 0x%Lx\n" label lbl n -- cgit