; ModuleID = '/dev/null'
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

define i64 @main() {
  block0:
    %tmp = bitcast i64 123 to i64
    br i1 true, label %block1, label %block1
  block1:
    %tmp2 = phi i64 [%tmp, %block0], [456, %block0]
    ret i64 0
}