1 files changed, 5 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/X86/X86TargetMachine.cpp b/contrib/llvm/lib/Target/X86/X86TargetMachine.cpp
index 5e6aa7d..1fc6b20 100644
--- a/contrib/llvm/lib/Target/X86/X86TargetMachine.cpp
+++ b/contrib/llvm/lib/Target/X86/X86TargetMachine.cpp
@@ -154,6 +154,7 @@ public:
   void addIRPasses() override;
   bool addInstSelector() override;
   bool addILPOpts() override;
+  void addPreRegAlloc() override;
   void addPostRegAlloc() override;
   void addPreEmitPass() override;
 };
@@ -187,6 +188,10 @@ bool X86PassConfig::addILPOpts() {
   return true;
 }
 
+void X86PassConfig::addPreRegAlloc() {
+  addPass(createX86CallFrameOptimization());
+}
+
 void X86PassConfig::addPostRegAlloc() {
   addPass(createX86FloatingPointStackifierPass());
 }