1 files changed, 9 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/Localizer.cpp b/llvm/lib/CodeGen/GlobalISel/Localizer.cpp
index 5b13ea3abfd..1c4a668e5f3 100644
--- a/llvm/lib/CodeGen/GlobalISel/Localizer.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/Localizer.cpp
@@ -29,7 +29,11 @@ INITIALIZE_PASS_END(Localizer, DEBUG_TYPE,
                     "Move/duplicate certain instructions close to their use",
                     false, false)
 
-Localizer::Localizer() : MachineFunctionPass(ID) { }
+Localizer::Localizer(std::function<bool(const MachineFunction &)> F)
+    : MachineFunctionPass(ID), DoNotRunPass(F) {}
+
+Localizer::Localizer()
+    : Localizer([](const MachineFunction &) { return false; }) {}
 
 void Localizer::init(MachineFunction &MF) {
   MRI = &MF.getRegInfo();
@@ -212,6 +216,10 @@ bool Localizer::runOnMachineFunction(MachineFunction &MF) {
           MachineFunctionProperties::Property::FailedISel))
     return false;
 
+  // Don't run the pass if the target asked so.
+  if (DoNotRunPass(MF))
+    return false;
+
   LLVM_DEBUG(dbgs() << "Localize instructions for: " << MF.getName() << '\n');
 
   init(MF);