tests: Skip const OOM tests on aarch64-unknown-linux-gnu

Skip const OOM tests on AArch64 Linux through explicit annotations
instead of inside opt-dist.
Intended to avoid confusion in cases like rust-lang#135952.

Prerequisite for rust-lang#135960.

Author: mrkajetanp

src/tools/opt-dist/src/main.rs

@@ -148,16 +148,6 @@ fn create_environment(args: Args) -> anyhow::Result<(Environment, Vec<String>)>
 
             let is_aarch64 = target_triple.starts_with("aarch64");
 
-            let skip_tests = if is_aarch64 {
-                vec![
-                    // Those tests fail only inside of Docker on aarch64, as of December 2024
-                    "tests/ui/consts/promoted_running_out_of_memory_issue-130687.rs".to_string(),
-                    "tests/ui/consts/large_const_alloc.rs".to_string(),
-                ]
-            } else {
-                vec![]
-            };
-
             let checkout_dir = Utf8PathBuf::from("/checkout");
             let env = EnvironmentBuilder::default()
                 .host_tuple(target_triple)
@@ -169,7 +159,7 @@ fn create_environment(args: Args) -> anyhow::Result<(Environment, Vec<String>)>
                 .shared_llvm(true)
                 // FIXME: Enable bolt for aarch64 once it's fixed upstream. Broken as of December 2024.
                 .use_bolt(!is_aarch64)
-                .skipped_tests(skip_tests)
+                .skipped_tests(vec![])
                 .build()?;
 
             (env, shared.build_args)

tests/ui/consts/large_const_alloc.rs

@@ -1,5 +1,7 @@
 //@ only-64bit
 // on 32bit and 16bit platforms it is plausible that the maximum allocation size will succeed
+// FIXME (#135952) In some cases on AArch64 Linux the diagnostic does not trigger
+//@ ignore-aarch64-unknown-linux-gnu
 
 const FOO: () = {
     // 128 TiB, unlikely anyone has that much RAM

tests/ui/consts/large_const_alloc.stderr

@@ -1,11 +1,11 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/large_const_alloc.rs:6:13
+  --> $DIR/large_const_alloc.rs:8:13
    |
 LL |     let x = [0_u8; (1 << 47) - 1];
    |             ^^^^^^^^^^^^^^^^^^^^^ tried to allocate more memory than available to compiler
 
 error[E0080]: could not evaluate static initializer
-  --> $DIR/large_const_alloc.rs:11:13
+  --> $DIR/large_const_alloc.rs:13:13
    |
 LL |     let x = [0_u8; (1 << 47) - 1];
    |             ^^^^^^^^^^^^^^^^^^^^^ tried to allocate more memory than available to compiler

tests/ui/consts/promoted_running_out_of_memory_issue-130687.rs

@@ -3,6 +3,8 @@
 
 // Needs the max type size to be much bigger than the RAM people typically have.
 //@ only-64bit
+// FIXME (#135952) In some cases on AArch64 Linux the diagnostic does not trigger
+//@ ignore-aarch64-unknown-linux-gnu
 
 pub struct Data([u8; (1 << 47) - 1]);
 const _: &'static Data = &Data([0; (1 << 47) - 1]);

tests/ui/consts/promoted_running_out_of_memory_issue-130687.stderr

@@ -1,5 +1,5 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/promoted_running_out_of_memory_issue-130687.rs:8:32
+  --> $DIR/promoted_running_out_of_memory_issue-130687.rs:10:32
    |
 LL | const _: &'static Data = &Data([0; (1 << 47) - 1]);
    |                                ^^^^^^^^^^^^^^^^^^ tried to allocate more memory than available to compiler