IA64: dependency violation not detected

[Jan Beulich]

In a code sequence like

        cmp.eq  p6, p7 = r1, r2
        ;;
        cmp.ne  p6, p0 = r1, r2
        ;;
        (p6)    mov r3 = 0
        (p7)    mov r3 = 1
        ;;

the assembler fails to note that the mutex relationship between p6 and p7 
established in the first instruction gets destroyed by the second one. There is 
source code specifically dealing with this situation in (falsely) ignoring this 
(binutils 2.13 tc-ia64.c line 8915).

Thanks, Jan