1 ; RUN: opt < %s -gvn -S | not grep "%z2 =" 2 3 define i32 @main() { 4 block1: 5 %z1 = bitcast i32 0 to i32 6 br label %block2 7 block2: 8 %z2 = bitcast i32 0 to i32 9 ret i32 %z2 10 } 11