[gn build] Port e8b255df1bb4

llvm/utils/gn/secondary/llvm/lib/Target/Hexagon/BUILD.gn

diff --git a/llvm/utils/gn/secondary/llvm/lib/Target/Hexagon/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Target/Hexagon/BUILD.gn
index c055001..065d33d 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Target/Hexagon/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Target/Hexagon/BUILD.gn
@@ -79,6 +79,7 @@
     "HexagonOptAddrMode.cpp",
     "HexagonOptimizeSZextends.cpp",
     "HexagonPeephole.cpp",
+    "HexagonQFPOptimizer.cpp",
     "HexagonRDFOpt.cpp",
     "HexagonRegisterInfo.cpp",
     "HexagonSelectionDAGInfo.cpp",