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Author: LegNeato

tests/compiletests/src/main.rs

@@ -639,6 +639,36 @@ fn setup_windows_dll_path(codegen_backend_path: &Path) {
     let final_path = env::var(dylib_path_envvar()).unwrap_or_default();
     println!("\nFinal PATH: {}", final_path);
 
+    // Try copying LLVM DLLs to the codegen backend directory
+    println!("\nChecking if LLVM DLLs need to be copied...");
+    if let Some(codegen_dir) = codegen_backend_path.parent() {
+        // Look for LLVM DLLs in the PATH
+        for path_str in final_path.split(';') {
+            let path = Path::new(path_str);
+            if path.exists() && path.to_str().unwrap().contains("rustc_codegen_nvvm") && path.to_str().unwrap().contains("bin") {
+                println!("  Checking for LLVM DLLs in: {}", path.display());
+                if let Ok(entries) = std::fs::read_dir(path) {
+                    for entry in entries.flatten() {
+                        if let Some(name) = entry.file_name().to_str() {
+                            if name.starts_with("LLVM") && name.ends_with(".dll") {
+                                let src = entry.path();
+                                let dst = codegen_dir.join(name);
+                                if !dst.exists() {
+                                    println!("    Copying {} to codegen directory", name);
+                                    if let Err(e) = std::fs::copy(&src, &dst) {
+                                        println!("    Failed to copy: {}", e);
+                                    }
+                                } else {
+                                    println!("    {} already exists in codegen directory", name);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    
     // Try to use dumpbin to check what DLLs are needed
     println!("\nChecking DLL dependencies...");
     let dumpbin_result = Command::new("dumpbin")