Typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70792 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/StackSlotColoring.cpp b/lib/CodeGen/StackSlotColoring.cpp
index 139d12b..6406b1c 100644
--- a/lib/CodeGen/StackSlotColoring.cpp
+++ b/lib/CodeGen/StackSlotColoring.cpp
@@ -37,7 +37,7 @@
              cl::desc("Suppress slot sharing during stack coloring"));
 
 static cl::opt<bool>
-ColorWithRegs("-color-ss-with-regs",
+ColorWithRegs("color-ss-with-regs",
              cl::init(false), cl::Hidden,
              cl::desc("Color stack slots with free registers"));