port-arm/50641: src/sys/arch/aarch64/include/db_machdep.h:67: possible bad if test ?

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>Number:         50641
>Category:       port-arm
>Synopsis:       src/sys/arch/aarch64/include/db_machdep.h:67: possible bad if test ?
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jan 10 20:15:01 +0000 2016
>Originator:     David Binderman
>Release:        cvs dated 20160110
>Organization:
>Environment:
>Description:
[src/sys/arch/aarch64/include/db_machdep.h:67]: (style) Expression '(X & 0xfc000000) == 0x92000000' is always false.

Source code is


    return (insn & 0xfc000000) == 0x92000000    /* bl */

>How-To-Repeat:

>Fix: