Rollup merge of #140430 - nnethercote:hir-exhaustive, r=dtolnay

Improve test coverage of HIR pretty printing.

Details in individual commits.

r? `@dtolnay`

try-job: test-various

Author: Zalathar

tests/ui/unpretty/exhaustive-asm.expanded.stdout

@@ -0,0 +1,33 @@
+#![feature(prelude_import)]
+#[prelude_import]
+use std::prelude::rust_2024::*;
+#[macro_use]
+extern crate std;
+//@ revisions: expanded hir
+//@[expanded]compile-flags: -Zunpretty=expanded
+//@[expanded]check-pass
+//@[hir]compile-flags: -Zunpretty=hir
+//@[hir]check-pass
+//@ edition:2024
+//@ only-x86_64
+//
+// asm parts of exhaustive.rs. Separate because we only run this on x86_64.
+
+mod expressions {
+    /// ExprKind::InlineAsm
+    fn expr_inline_asm() {
+        let x;
+        asm!("mov {1}, {0}\nshl {1}, 1\nshl {0}, 2\nadd {0}, {1}",
+            inout(reg)
+            x,
+            out(reg)
+            _);
+    }
+}
+
+mod items {
+    /// ItemKind::GlobalAsm
+    mod item_global_asm {
+        global_asm! (".globl my_asm_func");
+    }
+}

tests/ui/unpretty/exhaustive-asm.hir.stdout

@@ -0,0 +1,31 @@
+#[prelude_import]
+use std::prelude::rust_2024::*;
+#[macro_use]
+extern crate std;
+//@ revisions: expanded hir
+//@[expanded]compile-flags: -Zunpretty=expanded
+//@[expanded]check-pass
+//@[hir]compile-flags: -Zunpretty=hir
+//@[hir]check-pass
+//@ edition:2024
+//@ only-x86_64
+//
+// asm parts of exhaustive.rs. Separate because we only run this on x86_64.
+
+mod expressions {
+    /// ExprKind::InlineAsm
+    fn expr_inline_asm() {
+        let x;
+        asm!("mov {1}, {0}\nshl {1}, 1\nshl {0}, 2\nadd {0}, {1}",
+            inout(reg)
+            x,
+            out(reg)
+            _);
+    }
+}
+
+mod items {
+    /// ItemKind::GlobalAsm
+    mod item_global_asm {/// ItemKind::GlobalAsm
+        global_asm! (".globl my_asm_func") }
+    }

tests/ui/unpretty/exhaustive-asm.rs

@@ -0,0 +1,31 @@
+//@ revisions: expanded hir
+//@[expanded]compile-flags: -Zunpretty=expanded
+//@[expanded]check-pass
+//@[hir]compile-flags: -Zunpretty=hir
+//@[hir]check-pass
+//@ edition:2024
+//@ only-x86_64
+//
+// asm parts of exhaustive.rs. Separate because we only run this on x86_64.
+
+mod expressions {
+    /// ExprKind::InlineAsm
+    fn expr_inline_asm() {
+        let x;
+        core::arch::asm!(
+            "mov {tmp}, {x}",
+            "shl {tmp}, 1",
+            "shl {x}, 2",
+            "add {x}, {tmp}",
+            x = inout(reg) x,
+            tmp = out(reg) _,
+        );
+    }
+}
+
+mod items {
+    /// ItemKind::GlobalAsm
+    mod item_global_asm {
+        core::arch::global_asm!(".globl my_asm_func");
+    }
+}

tests/ui/unpretty/expanded-exhaustive.stdout renamed to tests/ui/unpretty/exhaustive.expanded.stdout

@@ -1,7 +1,13 @@
 #![feature(prelude_import)]
-//@ compile-flags: -Zunpretty=expanded
+//@ revisions: expanded hir
+//@[expanded]compile-flags: -Zunpretty=expanded
+//@[expanded]check-pass
+//@[hir]compile-flags: -Zunpretty=hir
+//@[hir]check-fail
 //@ edition:2024
-//@ check-pass
+
+// Note: the HIR revision includes a `.stderr` file because there are some
+// errors that only occur once we get past the AST.
 
 #![feature(auto_traits)]
 #![feature(box_patterns)]
@@ -211,7 +217,10 @@ mod expressions {
     }
 
     /// ExprKind::Await
-    fn expr_await() { let fut; fut.await; }
+    fn expr_await() {
+        let fut;
+        fut.await;
+    }
 
     /// ExprKind::TryBlock
     fn expr_try_block() { try {} try { return; } }
@@ -242,7 +251,9 @@ mod expressions {
     }
 
     /// ExprKind::Underscore
-    fn expr_underscore() { _; }
+    fn expr_underscore() {
+        _;
+    }
 
     /// ExprKind::Path
     fn expr_path() {
@@ -275,16 +286,8 @@ mod expressions {
     /// ExprKind::Ret
     fn expr_ret() { return; return true; }
 
-    /// ExprKind::InlineAsm
-    fn expr_inline_asm() {
-        let x;
-        asm!("mov {1}, {0}\nshl {1}, 1\nshl {0}, 2\nadd {0}, {1}",
-            inout(reg)
-            x,
-            out(reg)
-            _);
-    }
 
+    /// ExprKind::InlineAsm: see exhaustive-asm.rs
     /// ExprKind::OffsetOf
     fn expr_offset_of() {
 
@@ -300,65 +303,12 @@ mod expressions {
 
 
 
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         // concat_idents is deprecated
 
 
@@ -450,10 +400,7 @@ mod items {
         unsafe extern "C++" {}
         unsafe extern "C" {}
     }
-    /// ItemKind::GlobalAsm
-    mod item_global_asm {
-        global_asm! (".globl my_asm_func");
-    }
+    /// ItemKind::GlobalAsm: see exhaustive-asm.rs
     /// ItemKind::TyAlias
     mod item_ty_alias {
         pub type Type<'a> where T: 'a = T;