Rollup merge of #60187 - tmandry:generator-optimization, r=eddyb

[rust.git] / src / bootstrap / util.rs

diff --git a/src/bootstrap/util.rs b/src/bootstrap/util.rs
index f22f0559265b11ef6d0f5bbb526b722e5359c91d..9f684678bb060be35fbfde61d36a04adafec9374 100644 (file)
--- a/src/bootstrap/util.rs
+++ b/src/bootstrap/util.rs
@@ -356,3 +356,19 @@ pub fn force_coloring_in_ci(self, cmd: &mut Command) {
         }
     }
 }
+
+pub fn forcing_clang_based_tests() -> bool {
+    if let Some(var) = env::var_os("RUSTBUILD_FORCE_CLANG_BASED_TESTS") {
+        match &var.to_string_lossy().to_lowercase()[..] {
+            "1" | "yes" | "on" => true,
+            "0" | "no" | "off" => false,
+            other => {
+                // Let's make sure typos don't go unnoticed
+                panic!("Unrecognized option '{}' set in \
+                        RUSTBUILD_FORCE_CLANG_BASED_TESTS", other)
+            }
+        }
+    } else {
+        false
+    }
+}