Fixup tool checking

Author: Zalathar

src/bootstrap/src/core/build_steps/check.rs

@@ -453,12 +453,14 @@ macro_rules! tool_check_step {
             // The part of this path after the final '/' is also used as a display name.
             path: $path:literal
             $(, alt_path: $alt_path:literal )*
+            , mode: $mode:path
             $(, default: $default:literal )?
             $( , )?
         }
     ) => {
         #[derive(Debug, Clone, PartialEq, Eq, Hash)]
         pub struct $name {
+            pub build_compiler: Compiler,
             pub target: TargetSelection,
         }
 
@@ -473,16 +475,33 @@ macro_rules! tool_check_step {
             }
 
             fn make_run(run: RunConfig<'_>) {
-                run.builder.ensure($name { target: run.target });
+                let host = run.builder.config.host_target;
+                let target = run.target;
+                let build_compiler = match $mode {
+                    Mode::ToolBootstrap => run.builder.compiler(0, host),
+                    Mode::ToolStd => {
+                        // A small number of tools rely on in-tree standard
+                        // library crates (e.g. compiletest needs libtest).
+                        let build_compiler = run.builder.compiler(run.builder.top_stage, host);
+                        run.builder.std(build_compiler, host);
+                        run.builder.std(build_compiler, target);
+                        build_compiler
+                    }
+                    Mode::ToolRustc => {
+                        prepare_compiler_for_tool_rustc(run.builder, target)
+                    }
+                    _ => panic!("unexpected mode for tool check step: {:?}", $mode),
+                };
+                run.builder.ensure($name { target, build_compiler });
             }
 
             fn run(self, builder: &Builder<'_>) {
-                let Self { target } = self;
-                run_tool_check_step(builder, target, stringify!($name), $path);
+                let Self { target, build_compiler } = self;
+                run_tool_check_step(builder, build_compiler, target, $path, $mode);
             }
 
             fn metadata(&self) -> Option<StepMetadata> {
-                Some(StepMetadata::check(stringify!($name), self.target))
+                Some(StepMetadata::check(stringify!($name), self.target).built_by(self.build_compiler))
             }
         }
     }
@@ -491,19 +510,17 @@ macro_rules! tool_check_step {
 /// Used by the implementation of `Step::run` in `tool_check_step!`.
 fn run_tool_check_step(
     builder: &Builder<'_>,
+    build_compiler: Compiler,
     target: TargetSelection,
-    step_type_name: &str,
     path: &str,
+    mode: Mode,
 ) {
     let display_name = path.rsplit('/').next().unwrap();
-    let compiler = builder.compiler(builder.top_stage, builder.config.host_target);
-
-    builder.ensure(Rustc::new(builder, compiler, target));
 
     let mut cargo = prepare_tool_cargo(
         builder,
-        compiler,
-        Mode::ToolRustc,
+        build_compiler,
+        mode,
         target,
         builder.kind,
         path,
@@ -515,33 +532,56 @@ fn run_tool_check_step(
         &[],
     );
 
+    // FIXME: check bootstrap doesn't currently work with --all-targets
     cargo.arg("--all-targets");
 
-    let stamp = BuildStamp::new(&builder.cargo_out(compiler, Mode::ToolRustc, target))
-        .with_prefix(&format!("{}-check", step_type_name.to_lowercase()));
+    let stamp = BuildStamp::new(&builder.cargo_out(build_compiler, mode, target))
+        .with_prefix(&format!("{display_name}-check"));
+
+    let stage = match mode {
+        // Mode::ToolRustc is included here because of how msg_sysroot_tool prints stages
+        Mode::Std | Mode::ToolRustc => build_compiler.stage,
+        _ => build_compiler.stage + 1,
+    };
 
-    let _guard = builder.msg_check(format!("{display_name} artifacts"), target, None);
+    let _guard =
+        builder.msg_tool(builder.kind, mode, display_name, stage, &build_compiler.host, &target);
     run_cargo(builder, cargo, builder.config.free_args.clone(), &stamp, vec![], true, false);
 }
 
-tool_check_step!(Rustdoc { path: "src/tools/rustdoc", alt_path: "src/librustdoc" });
+tool_check_step!(Rustdoc {
+    path: "src/tools/rustdoc",
+    alt_path: "src/librustdoc",
+    mode: Mode::ToolRustc
+});
 // Clippy, miri and Rustfmt are hybrids. They are external tools, but use a git subtree instead
 // of a submodule. Since the SourceType only drives the deny-warnings
 // behavior, treat it as in-tree so that any new warnings in clippy will be
 // rejected.
-tool_check_step!(Clippy { path: "src/tools/clippy" });
-tool_check_step!(Miri { path: "src/tools/miri" });
-tool_check_step!(CargoMiri { path: "src/tools/miri/cargo-miri" });
-tool_check_step!(Rustfmt { path: "src/tools/rustfmt" });
-tool_check_step!(MiroptTestTools { path: "src/tools/miropt-test-tools" });
-tool_check_step!(TestFloatParse { path: "src/tools/test-float-parse" });
-tool_check_step!(FeaturesStatusDump { path: "src/tools/features-status-dump" });
-
-tool_check_step!(Bootstrap { path: "src/bootstrap", default: false });
+tool_check_step!(Clippy { path: "src/tools/clippy", mode: Mode::ToolRustc });
+tool_check_step!(Miri { path: "src/tools/miri", mode: Mode::ToolRustc });
+tool_check_step!(CargoMiri { path: "src/tools/miri/cargo-miri", mode: Mode::ToolRustc });
+tool_check_step!(Rustfmt { path: "src/tools/rustfmt", mode: Mode::ToolRustc });
+tool_check_step!(MiroptTestTools {
+    path: "src/tools/miropt-test-tools",
+    mode: Mode::ToolBootstrap
+});
+// We want to test the local std
+tool_check_step!(TestFloatParse { path: "src/tools/test-float-parse", mode: Mode::ToolStd });
+tool_check_step!(FeaturesStatusDump {
+    path: "src/tools/features-status-dump",
+    mode: Mode::ToolBootstrap
+});
+
+tool_check_step!(Bootstrap { path: "src/bootstrap", mode: Mode::ToolBootstrap, default: false });
 
 // `run-make-support` will be built as part of suitable run-make compiletest test steps, but support
 // check to make it easier to work on.
-tool_check_step!(RunMakeSupport { path: "src/tools/run-make-support", default: false });
+tool_check_step!(RunMakeSupport {
+    path: "src/tools/run-make-support",
+    mode: Mode::ToolBootstrap,
+    default: false
+});
 
 /// Check step for the `coverage-dump` bootstrap tool. The coverage-dump tool
 /// is used internally by coverage tests.

src/bootstrap/src/core/build_steps/tool.rs

@@ -77,7 +77,7 @@ impl Builder<'_> {
                 *target,
             ),
             // doesn't depend on compiler, same as host compiler
-            _ => self.msg(Kind::Build, build_stage, format_args!("tool {tool}"), *host, *target),
+            _ => self.msg(kind, build_stage, format_args!("tool {tool}"), *host, *target),
         }
     }
 }

src/bootstrap/src/core/builder/tests.rs

@@ -1352,9 +1352,8 @@ mod snapshot {
                 .path("miri")
                 .render_steps(), @r"
         [build] llvm <host>
-        [build] rustc 0 <host> -> rustc 1 <host>
         [check] rustc 0 <host> -> rustc 1 <host>
-        [check] Miri <host>
+        [check] rustc 0 <host> -> Miri 1 <host>
         ");
     }
 
@@ -1374,9 +1373,8 @@ mod snapshot {
                 .stage(1)
                 .render_steps(), @r"
         [build] llvm <host>
-        [build] rustc 0 <host> -> rustc 1 <host>
         [check] rustc 0 <host> -> rustc 1 <host>
-        [check] Miri <host>
+        [check] rustc 0 <host> -> Miri 1 <host>
         ");
     }
 
@@ -1391,9 +1389,8 @@ mod snapshot {
         [build] llvm <host>
         [build] rustc 0 <host> -> rustc 1 <host>
         [build] rustc 1 <host> -> std 1 <host>
-        [build] rustc 1 <host> -> rustc 2 <host>
         [check] rustc 1 <host> -> rustc 2 <host>
-        [check] Miri <host>
+        [check] rustc 1 <host> -> Miri 2 <host>
         ");
     }
 
@@ -1448,6 +1445,15 @@ mod snapshot {
         ");
     }
 
+    #[test]
+    fn check_bootstrap_tool() {
+        let ctx = TestCtx::new();
+        insta::assert_snapshot!(
+            ctx.config("check")
+                .path("run-make-support")
+                .render_steps(), @"[check] rustc 0 <host> -> RunMakeSupport 1 <host>");
+    }
+
     #[test]
     fn test_exclude() {
         let ctx = TestCtx::new();