[gn build] Port 60fda8ebb6d
diff --git a/llvm/utils/gn/secondary/llvm/lib/Target/ARM/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Target/ARM/BUILD.gn
index 27d98ae..e98d3a77 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Target/ARM/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Target/ARM/BUILD.gn
@@ -67,6 +67,7 @@
     "ARMBaseInstrInfo.cpp",
     "ARMBaseRegisterInfo.cpp",
     "ARMBasicBlockInfo.cpp",
+    "ARMBlockPlacement.cpp",
     "ARMCallLowering.cpp",
     "ARMCallingConv.cpp",
     "ARMConstantIslandPass.cpp",