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https://gcc.gnu.org/pipermail/gcc-patches/2023-February/612648.html
https://gcc.gnu.org/legacy-ml/gcc-patches/2015-05/msg00899.html
https://gcc.gnu.org/PR65612
From d16a8ceb1c3c8a7ec381090b4c316ff4c55661c0 Mon Sep 17 00:00:00 2001
From:
Date: Thu, 7 May 2020 21:14:11 -0500
Subject: [PATCH] convert "__cpu_indicator_init" to
"__cpu_indicator_init_local"
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -12338,10 +12338,10 @@ ix86_expand_builtin (tree exp, rtx target, rtx subtarget,
{
case IX86_BUILTIN_CPU_INIT:
{
- /* Make it call __cpu_indicator_init in libgcc. */
+ /* Make it call __cpu_indicator_init_local in libgcc. */
tree call_expr, fndecl, type;
type = build_function_type_list (integer_type_node, NULL_TREE);
- fndecl = build_fn_decl ("__cpu_indicator_init", type);
+ fndecl = build_fn_decl ("__cpu_indicator_init_local", type);
call_expr = build_call_expr (fndecl, 0);
return expand_expr (call_expr, target, mode, EXPAND_NORMAL);
}
--- a/libgcc/config/i386/cpuinfo.c
+++ b/libgcc/config/i386/cpuinfo.c
@@ -508,7 +508,7 @@ __cpu_indicator_init (void)
return 0;
}
-#if defined SHARED && defined USE_ELF_SYMVER
-__asm__ (".symver __cpu_indicator_init, __cpu_indicator_init@GCC_4.8.0");
-__asm__ (".symver __cpu_model, __cpu_model@GCC_4.8.0");
+#ifndef SHARED
+int __cpu_indicator_init_local (void)
+ __attribute__ ((weak, alias ("__cpu_indicator_init")));
#endif
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