RISC-V: Fix testsuite regression due to recent IRA changes.
After IRA changes, atomic version will use one more register, but
non-atomic still use 2 registers, however this testcase isn't testing for
atomic feature, so I decide change the testcase to always use COUNT++
to test.
ChangeLog
gcc/testsuite/
Kito Cheng <kito.cheng@sifive.com>
* gcc.target/riscv/interrupt-2.c: Update testcase and expected output.