From 442b6fb7c09a39577261de90413cc4db366f1c5f Mon Sep 17 00:00:00 2001 From: Alexandre Oliva Date: Thu, 3 Dec 2020 16:20:28 -0300 Subject: [PATCH] fix __builtin___clear_cache overrider fallout Machines that had CLEAR_CACHE_INSN and that would thus issue calls to __clear_cache with the default call expander, would fail on languages that did not set up the __clear_cache builtin. This patch arranges for all languages to set up this builtin. Machines or multilibs that had ptr_mode != Pmode, such as aarch64 with -mabi=ilp32, would fail the RTL mode test of the arguments passed to __clear_cache, because we'd insist on ptr_mode. This patch arranges for Pmode to be accepted as well. for gcc/ChangeLog * tree.c (build_common_builtin_nodes): Declare __builtin___clear_cache for all languages. * builtins.c (maybe_emit_call_builtin___clear_cache): Accept Pmode arguments. --- gcc/builtins.c | 3 ++- gcc/tree.c | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/builtins.c b/gcc/builtins.c index ecc12e69c14..cd30de8bfb0 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -7793,7 +7793,8 @@ default_emit_call_builtin___clear_cache (rtx begin, rtx end) void maybe_emit_call_builtin___clear_cache (rtx begin, rtx end) { - if (GET_MODE (begin) != ptr_mode || GET_MODE (end) != ptr_mode) + if ((GET_MODE (begin) != ptr_mode && GET_MODE (begin) != Pmode) + || (GET_MODE (end) != ptr_mode && GET_MODE (end) != Pmode)) { error ("both arguments to %<__builtin___clear_cache%> must be pointers"); return; diff --git a/gcc/tree.c b/gcc/tree.c index 52a145dd018..72311005f57 100644 --- a/gcc/tree.c +++ b/gcc/tree.c @@ -10733,6 +10733,12 @@ build_common_builtin_nodes (void) ftype = build_function_type_list (void_type_node, ptr_type_node, ptr_type_node, NULL_TREE); + if (!builtin_decl_explicit_p (BUILT_IN_CLEAR_CACHE)) + local_define_builtin ("__builtin___clear_cache", ftype, + BUILT_IN_CLEAR_CACHE, + "__builtin___clear_cache", + ECF_NOTHROW); + local_define_builtin ("__builtin_nonlocal_goto", ftype, BUILT_IN_NONLOCAL_GOTO, "__builtin_nonlocal_goto", -- 2.11.4.GIT