|  | ; RUN: llc < %s -march=x86 | 
|  | ; PR3241 | 
|  |  | 
|  | @g_620 = external global i32 | 
|  |  | 
|  | define void @func_18(i32 %p_21) nounwind { | 
|  | entry: | 
|  | %t0 = call i32 @func_31(i32 %p_21) nounwind | 
|  | %t1 = call i32 @safe_add_macro_uint32_t_u_u() nounwind | 
|  | %t2 = icmp sgt i32 %t1, 0 | 
|  | %t3 = zext i1 %t2 to i32 | 
|  | %t4 = load i32, i32* @g_620, align 4 | 
|  | %t5 = icmp eq i32 %t3, %t4 | 
|  | %t6 = xor i32 %p_21, 1 | 
|  | %t7 = call i32 @func_55(i32 %t6) nounwind | 
|  | br i1 %t5, label %return, label %bb | 
|  |  | 
|  | bb: | 
|  | unreachable | 
|  |  | 
|  | return: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | declare i32 @func_31(i32) | 
|  |  | 
|  | declare i32 @safe_add_macro_uint32_t_u_u() | 
|  |  | 
|  | declare i32 @func_55(i32) |