Index: lib/CodeGen/CodeGenPrepare.cpp
===================================================================
--- lib/CodeGen/CodeGenPrepare.cpp
+++ lib/CodeGen/CodeGenPrepare.cpp
@@ -295,7 +295,7 @@
     if (PSI->isFunctionHotInCallGraph(&F))
       F.setSectionPrefix(".hot");
     else if (PSI->isFunctionColdInCallGraph(&F))
-      F.setSectionPrefix(".cold");
+      F.setSectionPrefix(".unlikely");
   }
 
   /// This optimization identifies DIV instructions that can be
Index: test/Transforms/CodeGenPrepare/section.ll
===================================================================
--- test/Transforms/CodeGenPrepare/section.ll
+++ test/Transforms/CodeGenPrepare/section.ll
@@ -35,7 +35,7 @@
 }
 
 ; CHECK: ![[HOT_ID]] = !{!"function_section_prefix", !".hot"}
-; CHECK: ![[COLD_ID]] = !{!"function_section_prefix", !".cold"}
+; CHECK: ![[COLD_ID]] = !{!"function_section_prefix", !".unlikely"}
 !llvm.module.flags = !{!1}
 !1 = !{i32 1, !"ProfileSummary", !2}
 !2 = !{!3, !4, !5, !6, !7, !8, !9, !10}