[Bug target/92846] New: [ARC] gloating point compares not generating Invalid Operand

[vgupta at synopsys dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92846

            Bug ID: 92846
           Summary: [ARC] gloating point compares not generating Invalid
                    Operand
           Product: gcc
           Version: 9.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vgupta at synopsys dot com
                CC: claziss at gcc dot gnu.org, vgupta at synopsys dot com
  Target Milestone: ---

This is similar to issues reported for other targets
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52451
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77918

The FDCMP instructions generated raised Invalid operand only for sNaN. This
causes glibc testsuite failures test-{double,float,...}-iseqsig which test both
qNaN and sNaN and expect either to pass.