[mono] Disable null checks in ghsaredvt wrappers, they are not needed, (#53775)

and they take up a lot of space since these wrappers are very common.

diff --git a/src/mono/mono/mini/mini.c b/src/mono/mono/mini/mini.c
index a8fb86c..3135f85 100644 (file)
--- a/src/mono/mono/mini/mini.c
+++ b/src/mono/mono/mini/mini.c
@@ -3213,6 +3213,12 @@ mini_method_compile (MonoMethod *method, guint32 opts, JitFlags flags, int parts
 
        if (cfg->compile_llvm)
                cfg->explicit_null_checks = TRUE;
+       if (cfg->explicit_null_checks && method->wrapper_type == MONO_WRAPPER_OTHER &&
+               (mono_marshal_get_wrapper_info (method)->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG ||
+                mono_marshal_get_wrapper_info (method)->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG)) {
+               /* These wrappers contain loads/stores which can't fail */
+               cfg->explicit_null_checks = FALSE;
+       }
 
        /*
        if (!mono_debug_count ())