https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85968
Bug ID: 85968
Summary: gcc/config/arc/arc.c:9805: bad test ?
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
gcc/trunk/gcc/config/arc/arc.c:9805:65: warning: bitwise comparison always
evaluates to true [-Wtautological-compare]
Source code is
250266 claziss if (((fn_type & ARC_FUNCTION_ILINK1) |
ARC_FUNCTION_FIRQ) != 0)
250266 claziss regno = ILINK1_REGNUM;
250266 claziss else if ((fn_type & ARC_FUNCTION_ILINK2) != 0)
250266 claziss regno = ILINK2_REGNUM;
250266 claziss else
250266 claziss gcc_unreachable ();
but
/* Fast interrupt is only available on ARCv2 processors. */
ARC_FUNCTION_FIRQ = 1 << 3,
so regno only ever gets set to ILINK1_REGNUM.
