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-rw-r--r--src/tools/run-make-support/src/external_deps/rustc.rs6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/tools/run-make-support/src/external_deps/rustc.rs b/src/tools/run-make-support/src/external_deps/rustc.rs
index 60d3366ee98..b74b1d5e166 100644
--- a/src/tools/run-make-support/src/external_deps/rustc.rs
+++ b/src/tools/run-make-support/src/external_deps/rustc.rs
@@ -405,6 +405,12 @@ impl Rustc {
         };
         self
     }
+
+    /// Make that the generated LLVM IR is in source order.
+    pub fn codegen_source_order(&mut self) -> &mut Self {
+        self.cmd.arg("-Zcodegen-source-order");
+        self
+    }
 }
 
 /// Query the sysroot path corresponding `rustc --print=sysroot`.