1; RUN: llc < %s
2
3; Examples that exhibits a bug in DAGCombine.  The case is triggered by the
4; following program.  The bug is DAGCombine assumes that the bit convert
5; preserves the number of elements so the optimization code tries to read
6; through the 3rd mask element, which doesn't exist.
7define i32 @update(<2 x i64> %val1, <2 x i64> %val2) nounwind readnone {
8entry:
9	%shuf = shufflevector <2 x i64> %val1, <2 x i64> %val2, <2 x i32> <i32 0, i32 3>
10	%bit  = bitcast <2 x i64> %shuf to <4 x i32>
11	%res =  extractelement <4 x i32> %bit, i32 3
12	ret i32 %res
13}
14