diff --git a/llvm/lib/CodeGen/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp
--- a/llvm/lib/CodeGen/RegisterCoalescer.cpp
+++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp
@@ -116,7 +116,7 @@
     cl::desc("For a large interval, if it is coalesed with other live "
              "intervals many times more than the threshold, stop its "
              "coalescing to control the compile time. "),
-    cl::init(100));
+    cl::init(256));
 
 namespace {