[llvm] Fix the computation of size of gshared instances in another pl…

…ace.

Fixes mono#13610.

mono/mini/mini-llvm.c

@@ -2417,6 +2417,7 @@ emit_vtype_to_args (EmitContext *ctx, LLVMBuilderRef builder, MonoType *t, LLVMV
 	int j, size, nslots;
 	LLVMTypeRef arg_type;
 
+	t = mini_get_underlying_type (t);
 	size = get_vtype_size (t);
 
 	if (MONO_CLASS_IS_SIMD (ctx->cfg, mono_class_from_mono_type_internal (t)))
@@ -3248,11 +3249,12 @@ emit_entry_bb (EmitContext *ctx, LLVMBuilderRef builder)
 		case LLVMArgAsIArgs: {
 			LLVMValueRef arg = LLVMGetParam (ctx->lmethod, pindex);
 			int size;
+			MonoType *t = mini_get_underlying_type (ainfo->type);
 
 			/* The argument is received as an array of ints, store it into the real argument */
-			ctx->addresses [reg] = build_alloca (ctx, ainfo->type);
+			ctx->addresses [reg] = build_alloca (ctx, t);
 
-			size = mono_class_value_size (mono_class_from_mono_type_internal (ainfo->type), NULL);
+			size = mono_class_value_size (mono_class_from_mono_type_internal (t), NULL);
 			if (size == 0) {
 			} else if (size < TARGET_SIZEOF_VOID_P) {
 				/* The upper bits of the registers might not be valid */