[gn build] Port 8e46e34d

llvm/utils/gn/secondary/llvm/lib/LTO/BUILD.gn

@@ -22,6 +22,7 @@ static_library("LTO") {
     "//llvm/lib/Transforms/Utils",
   ]
   sources = [
+    "Caching.cpp",
     "LTO.cpp",
     "LTOBackend.cpp",
     "LTOCodeGenerator.cpp",

llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn

@@ -54,7 +54,6 @@ static_library("Support") {
     "COM.cpp",
     "CRC.cpp",
     "CachePruning.cpp",
-    "Caching.cpp",
     "Chrono.cpp",
     "CodeGenCoverage.cpp",
     "CommandLine.cpp",