--- /dev/null
+; RUN: llvm-as < %s | opt -sccp | llvm-dis | not grep {ret i32 undef}
+; PR2358
+target datalayout =
+"e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i686-pc-linux-gnu"
+
+define i32 @x(i32 %b) {
+entry:
+ %val = call i32 @llvm.cttz.i32(i32 undef)
+ ret i32 %val
+}
+
+declare i32 @llvm.cttz.i32(i32)
+