Auto merge of #113382 - lqd:test-mcp510, r=<try>

[perf] test MCP510

r? `@ghost`

try-job: dist-x86_64-linux-alt

compiler/rustc/src/main.rs

@@ -36,6 +36,9 @@
 // for an example of how to do so.
 
 fn main() {
+    #[cfg(debug_assertions)]
+    compile_error!("debug assertions are indeed enabled");
+
     // See the comment at the top of this file for an explanation of this.
     #[cfg(feature = "jemalloc")]
     {

src/ci/github-actions/jobs.yml

@@ -72,7 +72,7 @@ envs:
     # - not running `opt-dist`'s post-optimization smoke tests on the resulting toolchain
     #
     # If you *want* these to happen however, temporarily uncomment it before triggering a try build.
-    DIST_TRY_BUILD: 1
+    # DIST_TRY_BUILD: 1
 
   auto:
     <<: *production

src/ci/run.sh

@@ -127,6 +127,13 @@ if [ "$DEPLOY$DEPLOY_ALT" = "1" ]; then
 
   CODEGEN_BACKENDS="${CODEGEN_BACKENDS:-llvm}"
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=$CODEGEN_BACKENDS"
+
+  # Unless explicitly disabled, we want rustc debug assertions on the -alt builds
+  if [ "$DEPLOY_ALT" != "" ]; then
+    if [ "$NO_DEBUG_ASSERTIONS" = "" ]; then
+      RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --enable-debug-assertions"
+    fi
+  fi
 else
   # We almost always want debug assertions enabled, but sometimes this takes too
   # long for too little benefit, so we just turn them off.