[Bug testsuite/106690] New: check_effective_target_bswap should be enabled for riscv if ZBB ISA extension is enabled

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106690

            Bug ID: 106690
           Summary: check_effective_target_bswap should be enabled for
                    riscv if ZBB ISA extension is enabled
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

While looking into __builtin_bswap testcases to quickly run before doing a fun
test run, I Noticed check_effective_target_bswap does not see if ZBB is enabled
for RISCV.