Allow to easily check the generated assembly

flake.nix

@@ -22,7 +22,7 @@
           inherit system;
           overlays = [ (import rust-overlay) ];
         };
-        rust = pkgs.rust-bin.stable.latest.default;
+        rust = pkgs.rust-bin.stable.latest.default.override { extensions = [ "rust-src" ]; };
         naersk' = pkgs.callPackage naersk {
           cargo = rust;
           rustc = rust;
@@ -38,6 +38,7 @@
             ++ (with pkgs; [
               hyperfine
               cargo-flamegraph
+              cargo-show-asm
             ]);
           RUST_PATH = "${rust}";
           RUST_DOC_PATH = "${rust}/share/doc/rust/html/std/index.html";

src/bin/day4.rs

@@ -43,6 +43,7 @@ fn rays<'a, T>(
         .map(|ray| ray.map(|(x, y)| &table[x][y]))
 }
 
+#[inline(never)]
 pub fn part1(input: Parsed) {
     let expected = b"XMAS";
     let mut ray_count = 0;
@@ -60,6 +61,7 @@ pub fn part1(input: Parsed) {
     print_res!("Word count: {ray_count}");
 }
 
+#[inline(never)]
 pub fn part2(input: Parsed) {
     let mut cross_count = 0;
     let expected = *b"MAS";

template.rs

@@ -5,14 +5,17 @@ use bstr::BString;
 
 type Parsed = ();
 
+#[inline(never)]
 pub fn parsing(input: &BString) -> color_eyre::Result<Parsed> {
     todo!("Parsing")
 }
 
+#[inline(never)]
 pub fn part1(input: Parsed) {
     todo!("todo part1")
 }
 
+#[inline(never)]
 pub fn part2(input: Parsed) {
     todo!("todo part2")
 }