Move has_errors_or_delayed_bugs check into start_codegen

Author: bjorn3

compiler/rustc_interface/src/passes.rs

@@ -1009,7 +1009,14 @@ fn check_for_rustc_errors_attr(tcx: TyCtxt<'_>) {
 pub(crate) fn start_codegen<'tcx>(
     codegen_backend: &dyn CodegenBackend,
     tcx: TyCtxt<'tcx>,
-) -> Box<dyn Any> {
+) -> Result<Box<dyn Any>> {
+    // Don't do code generation if there were any errors. Likewise if
+    // there were any delayed bugs, because codegen will likely cause
+    // more ICEs, obscuring the original problem.
+    if let Some(guar) = tcx.sess.dcx().has_errors_or_delayed_bugs() {
+        return Err(guar);
+    }
+
     // Hook for UI tests.
     check_for_rustc_errors_attr(tcx);
 
@@ -1035,7 +1042,7 @@ pub(crate) fn start_codegen<'tcx>(
         }
     }
 
-    codegen
+    Ok(codegen)
 }
 
 fn get_recursion_limit(krate_attrs: &[ast::Attribute], sess: &Session) -> Limit {

compiler/rustc_interface/src/queries.rs

@@ -126,14 +126,7 @@ impl<'tcx> Queries<'tcx> {
 
     pub fn codegen_and_build_linker(&'tcx self) -> Result<Linker> {
         self.global_ctxt()?.enter(|tcx| {
-            // Don't do code generation if there were any errors. Likewise if
-            // there were any delayed bugs, because codegen will likely cause
-            // more ICEs, obscuring the original problem.
-            if let Some(guar) = self.compiler.sess.dcx().has_errors_or_delayed_bugs() {
-                return Err(guar);
-            }
-
-            let ongoing_codegen = passes::start_codegen(&*self.compiler.codegen_backend, tcx);
+            let ongoing_codegen = passes::start_codegen(&*self.compiler.codegen_backend, tcx)?;
 
             Ok(Linker {
                 dep_graph: tcx.dep_graph.clone(),