From a6e55271fbc27bc605ba08c5f4e7b64719909ab0 Mon Sep 17 00:00:00 2001
From: Manuel Drehwald <git@manuel.drehwald.info>
Date: Fri, 7 Feb 2025 20:56:17 -0500
Subject: [PATCH] fix autodiff perf by running the enzyme opt pass before
 autodiff

---
 src/bootstrap/src/core/build_steps/llvm.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/bootstrap/src/core/build_steps/llvm.rs b/src/bootstrap/src/core/build_steps/llvm.rs
index 3cf25373b896..b4f823bfd1d8 100644
--- a/src/bootstrap/src/core/build_steps/llvm.rs
+++ b/src/bootstrap/src/core/build_steps/llvm.rs
@@ -964,6 +964,7 @@ impl Step for Enzyme {
             .env("LLVM_CONFIG_REAL", &llvm_config)
             .define("LLVM_ENABLE_ASSERTIONS", "ON")
             .define("ENZYME_EXTERNAL_SHARED_LIB", "ON")
+            .define("ENZYME_RUNPASS", "ON")
             .define("LLVM_DIR", builder.llvm_out(target));
 
         cfg.build();