--- /dev/null
+diff -Naurp gcc/config/avr/avr-devices.c gcc/config/avr/avr-devices.c
+--- gcc/config/avr/avr-devices.c 2011-06-10 16:21:40.000000000 -0500
++++ gcc/config/avr/avr-devices.c 2011-06-16 11:39:07.000000000 -0500
+@@ -96,6 +96,7 @@ const struct mcu_type_s avr_mcu_types[]
+ { "attiny87", ARCH_AVR25, "__AVR_ATtiny87__", 0, 0x0100, "tn87" },
+ { "attiny48", ARCH_AVR25, "__AVR_ATtiny48__", 0, 0x0100, "tn48" },
+ { "attiny88", ARCH_AVR25, "__AVR_ATtiny88__", 0, 0x0100, "tn88" },
++ { "attiny80", ARCH_AVR25, "__AVR_ATtiny80__", 0, 0x0100, "tn80" },
+ { "at86rf401", ARCH_AVR25, "__AVR_AT86RF401__", 1, 0x0060, "86401" },
+ /* Classic, > 8K, <= 64K +2-byte PC + { JMP/CALL }. */
+ { "avr3", ARCH_AVR3, NULL, 0, 0x0060, "43355" },
+diff -Naurp gcc/config/avr/t-avr gcc/config/avr/t-avr
+--- gcc/config/avr/t-avr 2011-06-10 16:21:40.000000000 -0500
++++ gcc/config/avr/t-avr 2011-06-16 11:39:55.000000000 -0500
+@@ -141,6 +141,7 @@ MULTILIB_MATCHES = \
+ mmcu?avr25=mmcu?attiny87 \
+ mmcu?avr25=mmcu?attiny48 \
+ mmcu?avr25=mmcu?attiny88 \
++ mmcu?avr25=mmcu?attiny80 \
+ mmcu?avr25=mmcu?at86rf401 \
+ mmcu?avr3=mmcu?at43usb355 \
+ mmcu?avr3=mmcu?at76c711 \