1 files changed, 7 insertions, 1 deletions
diff --git a/src/rustllvm/PassWrapper.cpp b/src/rustllvm/PassWrapper.cpp
index b4116c96ba1..d0c042e6451 100644
--- a/src/rustllvm/PassWrapper.cpp
+++ b/src/rustllvm/PassWrapper.cpp
@@ -366,7 +366,9 @@ extern "C" LLVMTargetMachineRef LLVMRustCreateTargetMachine(
     LLVMRustCodeModel RustCM, LLVMRustRelocMode RustReloc,
     LLVMRustCodeGenOptLevel RustOptLevel, bool UseSoftFloat,
     bool PositionIndependentExecutable, bool FunctionSections,
-    bool DataSections, bool TrapUnreachable) {
+    bool DataSections,
+    bool TrapUnreachable,
+    bool Singlethread) {
 
   auto CM = fromRust(RustCM);
   auto OptLevel = fromRust(RustOptLevel);
@@ -406,6 +408,10 @@ extern "C" LLVMTargetMachineRef LLVMRustCreateTargetMachine(
     Options.TrapUnreachable = true;
   }
 
+  if (Singlethread) {
+    Options.ThreadModel = ThreadModel::Single;
+  }
+
   TargetMachine *TM = TheTarget->createTargetMachine(
       Trip.getTriple(), RealCPU, Feature, Options, RM, CM, OptLevel);
   return wrap(TM);