add x86_64 Int is zero support for gen_dev

compiler/gen_dev/src/generic64/mod.rs

@@ -186,6 +186,8 @@ pub trait Assembler<GeneralReg: RegTrait, FloatReg: RegTrait> {
         src2: GeneralReg,
     );
 
+    fn num_is_zero_reg64_reg64(buf: &mut Vec<'_, u8>, dst: GeneralReg, src: GeneralReg);
+
     fn ret(buf: &mut Vec<'_, u8>);
 }
 
@@ -894,6 +896,22 @@ impl<
         }
     }
 
+    fn build_num_is_zero(
+        &mut self,
+        dst: &Symbol,
+        src: &Symbol,
+        arg_layout: &Layout<'a>,
+    ) -> Result<(), String> {
+        match arg_layout {
+            Layout::Builtin(Builtin::Int1) => {
+                let dst_reg = self.claim_general_reg(dst)?;
+                let src_reg = self.load_to_general_reg(src)?;
+                ASM::num_is_zero_reg64_reg64(&mut self.buf, dst_reg, src_reg);
+                Ok(())
+            }
+            x => Err(format!("NumIsZero: layout, {:?}, not implemented yet", x)),
+        }
+    }
     fn create_struct(
         &mut self,
         sym: &Symbol,