Do not mark instructions in unreachable sections of the function as live.
This fixes PR332 and ADCE/2004-05-04-UnreachableBlock.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13349 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed