1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/CommandFlags.cpp b/llvm/lib/CodeGen/CommandFlags.cpp
index a47608c..0a7c7a9 100644
--- a/llvm/lib/CodeGen/CommandFlags.cpp
+++ b/llvm/lib/CodeGen/CommandFlags.cpp
@@ -84,6 +84,7 @@ CGOPT(DebuggerKind, DebuggerTuningOpt)
 CGOPT(bool, EnableStackSizeSection)
 CGOPT(bool, EnableAddrsig)
 CGOPT(bool, EmitCallSiteInfo)
+CGOPT(bool, EnableMachineFunctionSplitter)
 CGOPT(bool, EnableDebugEntryValues)
 CGOPT(bool, ValueTrackingVariableLocations)
 CGOPT(bool, ForceDwarfFrameSection)
@@ -407,6 +408,13 @@ codegen::RegisterCodeGenFlags::RegisterCodeGenFlags() {
       cl::init(false));
   CGBINDOPT(ValueTrackingVariableLocations);
 
+  static cl::opt<bool> EnableMachineFunctionSplitter(
+      "split-machine-functions",
+      cl::desc("Split out cold basic blocks from machine functions based on "
+               "profile information"),
+      cl::init(false));
+  CGBINDOPT(EnableMachineFunctionSplitter);
+
   static cl::opt<bool> ForceDwarfFrameSection(
       "force-dwarf-frame-section",
       cl::desc("Always emit a debug frame section."), cl::init(false));
@@ -479,6 +487,7 @@ TargetOptions codegen::InitTargetOptionsFromCodeGenFlags() {
   Options.ExplicitEmulatedTLS = EmulatedTLSView->getNumOccurrences() > 0;
   Options.ExceptionModel = getExceptionModel();
   Options.EmitStackSizeSection = getEnableStackSizeSection();
+  Options.EnableMachineFunctionSplitter = getEnableMachineFunctionSplitter();
   Options.EmitAddrsig = getEnableAddrsig();
   Options.EmitCallSiteInfo = getEmitCallSiteInfo();
   Options.EnableDebugEntryValues = getEnableDebugEntryValues();