Merge pull request #81 from kdnakt/20230607

22-1: late output operands

22/22-1_late_output_operands.rs

@@ -0,0 +1,27 @@
+use std::arch::asm;
+
+fn main() {
+    let mut a: u64 = 4;
+    let mut b: u64 = 4;
+    let mut c: u64 = 4;
+
+    // 消すと--releaseビルドでバグる
+    println!("a={}", a);
+    // println!("b={}", b);
+    // println!("c={}", c);
+
+    unsafe {
+        asm!(
+            "add {0}, {1}",
+            "add {0}, {2}",
+            inlateout(reg) a,
+            in(reg) b,
+            in(reg) c,
+        );
+    }
+    // assert_eq!(a, 14);
+
+    println!("a={}", a);
+    // println!("b={}", b);
+    // println!("c={}", c);
+}