diff --git a/llvm/lib/Target/AVR/AVRDevices.td b/llvm/lib/Target/AVR/AVRDevices.td
--- a/llvm/lib/Target/AVR/AVRDevices.td
+++ b/llvm/lib/Target/AVR/AVRDevices.td
@@ -288,0 +289 @@
+def : Device<"attiny441",          FamilyAVR25, ELFArchAVR25>;
@@ -290,0 +292 @@
+def : Device<"attiny841",          FamilyAVR25, ELFArchAVR25>;