Minor tweak. Instead of generating:

        movl 32(%esp), %eax
        cmpl $1, %eax
        je LBB1_1       #bb
LBB1_4: #entry
        cmpl $2, %eax
        je LBB1_2       #bb2
        jmp LBB1_3      #UnifiedReturnBlock
LBB1_1: #bb

notice that we would miss the fall through and emit this instead:

        movl 32(%esp), %eax
        cmpl $2, %eax
        je LBB1_2       #bb2
LBB1_4: #entry
        cmpl $1, %eax
        jne LBB1_3      #UnifiedReturnBlock
LBB1_1: #bb

llvm-svn: 31130