[gn build] Port c0cdd22c72

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

@@ -99,6 +99,7 @@ static_library("CodeGen") {
     "MachineBlockPlacement.cpp",
     "MachineBranchProbabilityInfo.cpp",
     "MachineCSE.cpp",
+    "MachineCfgTraits.cpp",
     "MachineCombiner.cpp",
     "MachineCopyPropagation.cpp",
     "MachineDebugify.cpp",

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

@@ -19,6 +19,7 @@ static_library("IR") {
     "Attributes.cpp",
     "AutoUpgrade.cpp",
     "BasicBlock.cpp",
+    "CFG.cpp",
     "Comdat.cpp",
     "ConstantFold.cpp",
     "ConstantRange.cpp",

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

@@ -53,6 +53,7 @@ static_library("Support") {
     "COM.cpp",
     "CRC.cpp",
     "CachePruning.cpp",
+    "CfgTraits.cpp",
     "Chrono.cpp",
     "CodeGenCoverage.cpp",
     "CommandLine.cpp",