Function insn_is_atomic

crates/virtual-machine/src/cpu/hazard_unit.rs:81–83

True when the instruction is an atomic (acts as load for hazard purposes).

(insn: &DecodedInsn)

/// `fmv.x`/`fclass` (funct5 below) write integer rd; FP-forwarding those starves the consumer.
pub fn insn_is_fp_dest(insn: &DecodedInsn) -> bool {
    match insn {
        DecodedInsn::FLoad { .. } | DecodedInsn::FMac { .. } => true,
        DecodedInsn::FOp { funct5, .. } => !matches!(*funct5, 0b11000 | 0b10100 | 0b11100),
        _ => false,
    }
}