Method is_stack_address

crates/ir-to-asm/src/compiler/function_context.rs:190–192

(&self, reg: &IrRegister)

    pub fn emit_prologue(&self, backend: &mut impl Rv64Backend) {
        backend.emit_comment("--- Function Prologue ---");
        let frame_size = self.frame_size();
        backend.emit_comment(&format!("Allocate stack frame: {frame_size} bytes"));
        backend.emit_add_imm(SP, SP, -(frame_size as i64));
        if let Some(offset) = self.ra_offset() {
            backend.emit_comment(&format!("Save return address (ra) at offset {offset}"));
            backend.emit_sd(SP, RA, offset as i32);