Rollup merge of rust-lang#130730 - veera-sivarajan:clean-test-headers, r=compiler-errors

Reorganize Test Headers

This PR moves the test headers to the top in a couple of test files to maintain consistent style.

Based on this comment: rust-lang#130665 (comment)

Author: matthiaskrgr

Diff for: tests/ui/consts/const-eval/stable-metric/ctfe-simple-loop.allow.stderr

@@ -1,5 +1,5 @@
 warning: constant evaluation is taking a long time
-  --> $DIR/ctfe-simple-loop.rs:9:5
+  --> $DIR/ctfe-simple-loop.rs:10:5
    |
 LL | /     while index < n {
 LL | |
@@ -10,7 +10,7 @@ LL | |     }
    | |_____^ the const evaluator is currently interpreting this expression
    |
 help: the constant being evaluated
-  --> $DIR/ctfe-simple-loop.rs:19:1
+  --> $DIR/ctfe-simple-loop.rs:20:1
    |
 LL | const Y: u32 = simple_loop(35);
    | ^^^^^^^^^^^^

Diff for: tests/ui/consts/const-eval/stable-metric/ctfe-simple-loop.rs

@@ -1,9 +1,10 @@
 //@ check-pass
 //@ revisions: warn allow
+//@ compile-flags: -Z tiny-const-eval-limit
+
 #![cfg_attr(warn, warn(long_running_const_eval))]
 #![cfg_attr(allow, allow(long_running_const_eval))]
 
-//@ compile-flags: -Z tiny-const-eval-limit
 const fn simple_loop(n: u32) -> u32 {
     let mut index = 0;
     while index < n {

Diff for: tests/ui/consts/const-eval/stable-metric/ctfe-simple-loop.warn.stderr

@@ -1,5 +1,5 @@
 warning: constant evaluation is taking a long time
-  --> $DIR/ctfe-simple-loop.rs:9:5
+  --> $DIR/ctfe-simple-loop.rs:10:5
    |
 LL | /     while index < n {
 LL | |
@@ -12,18 +12,18 @@ LL | |     }
    = note: this lint makes sure the compiler doesn't get stuck due to infinite loops in const eval.
            If your compilation actually takes a long time, you can safely allow the lint.
 help: the constant being evaluated
-  --> $DIR/ctfe-simple-loop.rs:18:1
+  --> $DIR/ctfe-simple-loop.rs:19:1
    |
 LL | const X: u32 = simple_loop(19);
    | ^^^^^^^^^^^^
 note: the lint level is defined here
-  --> $DIR/ctfe-simple-loop.rs:3:24
+  --> $DIR/ctfe-simple-loop.rs:5:24
    |
 LL | #![cfg_attr(warn, warn(long_running_const_eval))]
    |                        ^^^^^^^^^^^^^^^^^^^^^^^
 
 warning: constant evaluation is taking a long time
-  --> $DIR/ctfe-simple-loop.rs:9:5
+  --> $DIR/ctfe-simple-loop.rs:10:5
    |
 LL | /     while index < n {
 LL | |
@@ -36,13 +36,13 @@ LL | |     }
    = note: this lint makes sure the compiler doesn't get stuck due to infinite loops in const eval.
            If your compilation actually takes a long time, you can safely allow the lint.
 help: the constant being evaluated
-  --> $DIR/ctfe-simple-loop.rs:19:1
+  --> $DIR/ctfe-simple-loop.rs:20:1
    |
 LL | const Y: u32 = simple_loop(35);
    | ^^^^^^^^^^^^
 
 warning: constant evaluation is taking a long time
-  --> $DIR/ctfe-simple-loop.rs:9:5
+  --> $DIR/ctfe-simple-loop.rs:10:5
    |
 LL | /     while index < n {
 LL | |
@@ -53,7 +53,7 @@ LL | |     }
    | |_____^ the const evaluator is currently interpreting this expression
    |
 help: the constant being evaluated
-  --> $DIR/ctfe-simple-loop.rs:19:1
+  --> $DIR/ctfe-simple-loop.rs:20:1
    |
 LL | const Y: u32 = simple_loop(35);
    | ^^^^^^^^^^^^

Diff for: tests/ui/consts/const-eval/stable-metric/evade-deduplication-issue-118612.rs

@@ -1,8 +1,8 @@
 //@ check-pass
+//@ compile-flags: -Z tiny-const-eval-limit -Z deduplicate-diagnostics=yes
 
 #![allow(long_running_const_eval)]
 
-//@ compile-flags: -Z tiny-const-eval-limit -Z deduplicate-diagnostics=yes
 const FOO: () = {
     let mut i = 0;
     loop {