After we add the frm register to the global_regs, we may not need to define_insn that volatile to emit the frm restore insns. The cooperatively-managed global register will help to handle this, instead of emit the volatile define_insn explicitly. gcc/ChangeLog: * config/riscv/riscv.cc (riscv_emit_frm_mode_set): Refactor the frm mode set by removing fsrmsi_restore_volatile. * config/riscv/vector-iterators.md (unspecv): Remove as unnecessary. * config/riscv/vector.md (fsrmsi_restore_volatile): Ditto. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/base/float-point-dynamic-frm-49.c: Adjust the asm dump check times. * gcc.target/riscv/rvv/base/float-point-dynamic-frm-50.c: Ditto. * gcc.target/riscv/rvv/base/float-point-dynamic-frm-52.c: Ditto. * gcc.target/riscv/rvv/base/float-point-dynamic-frm-74.c: Ditto. * gcc.target/riscv/rvv/base/float-point-dynamic-frm-75.c: Ditto. Signed-off-by: Pan Li <pan2.li@intel.com>