Compile error under Intel Xeon CPU E5-2630

Hello,

I installed Arduino IDE at one of my PC which has Intel Xeon CPU E5-2630. (Windows7 Enterprise 64bit)
And it returns compilation errors for every examples like below.

But if I changed Arduino version as 1.6.11 at board manager, it works without error.
I guess that over 1.6.11 version has a compatibility issue with Intel Xeon CPU E5-2630.

[1.6.23 Error]
```
"C:\Users\kiki\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\5.4.0-atmel3.6.1-arduino2/bin/avr-gcc" -Wall -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o "C:\Users\kiki\AppData\Local\Temp\arduino_build_9388/Blink.ino.elf" "C:\Users\kiki\AppData\Local\Temp\arduino_build_9388\sketch\Blink.ino.cpp.o" "C:\Users\kiki\AppData\Local\Temp\arduino_build_9388/..\arduino_cache_220929\core\core_arduino_avr_uno_fb933ce05b1df03f3b91ed6505233e1f.a" "-LC:\Users\kiki\AppData\Local\Temp\arduino_build_9388" -lm
__vector_16' referenced in section `.vectors' of c:/users/kiki/appdata/local/arduino15/packages/arduino/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/../lib/gcc/avr/5.4.0/../../../../avr/lib/avr5/crtatmega328p.o: defined in discarded section '.text' of wiring.c.o (symbol from plugin)

c:/users/kiki/appdata/local/arduino15/packages/arduino/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/../lib/gcc/avr/5.4.0/../../../../avr/lib/avr5/crtatmega328p.o:(.init9+0x0): undefined reference to `main'

collect2.exe: error: ld returned 1 exit status

exit status 1
```

[1.6.11 No Error]
```
Linking everything together...
"C:\Users\kiki\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\4.8.1-arduino5/bin/avr-gcc" -Wall -Os -Wl,--gc-sections -mmcu=atmega328p -o "C:\Users\kiki\AppData\Local\Temp\arduino_build_227972/Blink.ino.elf" "C:\Users\kiki\AppData\Local\Temp\arduino_build_227972\sketch\Blink.ino.cpp.o" "C:\Users\kiki\AppData\Local\Temp\arduino_build_227972/core\core.a" "-LC:\Users\kiki\AppData\Local\Temp\arduino_build_227972" -lm
"C:\Users\kiki\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\4.8.1-arduino5/bin/avr-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 "C:\Users\kiki\AppData\Local\Temp\arduino_build_227972/Blink.ino.elf" "C:\Users\kiki\AppData\Local\Temp\arduino_build_227972/Blink.ino.eep"
"C:\Users\kiki\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\4.8.1-arduino5/bin/avr-objcopy" -O ihex -R .eeprom "C:\Users\kiki\AppData\Local\Temp\arduino_build_227972/Blink.ino.elf" "C:\Users\kiki\AppData\Local\Temp\arduino_build_227972/Blink.ino.hex"
Sketch uses 0 bytes (0%) of program storage space. Maximum is 32256 bytes.
Global variables use 0 bytes (0%) of dynamic memory, leaving 2048 bytes for local variables. Maximum is 2048 bytes.
```

Reproduce the Blink example build on Windows 7 with Arduino IDE 1.6.23, Intel Xeon E5-2630, and the reported avr-gcc 5.4.0 toolchain, then compare it with IDE 1.6.11 and avr-gcc 4.8.1. Use the reported linker output as the entry point; done means the regression is isolated and a verified build no longer produces the discarded __vector_16 or undefined main errors.

Written by the indexing model from the issue text.