Test the whole range of varargs handling stuff

llvm-svn: 6034

llvm/test/Feature/varargs.ll

@@ -1,9 +1,21 @@
+; Demonstrate all of the variable argument handling intrinsic functions plus 
+; the va_arg instruction.
 
-
+implementation
+declare void %llvm.va_start(sbyte**, ...)
+declare void %llvm.va_copy(sbyte**, sbyte*)
+declare void %llvm.va_end(sbyte**)
 
 int %test(int %X, ...) {
 	%ap = alloca sbyte*
-	; This is not a legal testcase, it just shows the syntax for va_arg
+	%aq = alloca sbyte*
+	call void (sbyte**, ...)* %llvm.va_start(sbyte** %ap, int %X)
+	%apv = load sbyte** %ap
+	call void %llvm.va_copy(sbyte** %aq, sbyte* %apv)
+	call void %llvm.va_end(sbyte** %aq)
+	
 	%tmp = va_arg sbyte** %ap, int 
+
+	call void %llvm.va_end(sbyte** %ap)
 	ret int %tmp
 }