Tentative Windows fix.

src/llvm_state.cpp

@@ -309,17 +309,17 @@ llvm::orc::JITTargetMachineBuilder create_jit_tmb(unsigned opt_level, code_model
 
     // LCOV_EXCL_START
 
-#if LLVM_VERSION_MAJOR >= 17
-
     // NOTE: the code model setup is working only on LLVM>=19 (or at least
     // LLVM 18 + patches, as in the conda-forge LLVM package), due to this bug:
     //
     // https://github.com/llvm/llvm-project/issues/88115
     //
     // Additionally, there are indications from our CI that attempting to set
-    // the code model before LLVM 17 might just be buggy, as we see widespread
+    // the code model before LLVM 17 or on Windows might just be buggy, as we see widespread
     // ASAN failures all over the place. Thus, let us not do anything with the code
-    // model setting before LLVM 17.
+    // model setting before LLVM 17 or on Windows.
+
+#if LLVM_VERSION_MAJOR >= 17 && !defined(_WIN32)
 
     // Setup the code model.
     switch (c_model) {