2012-03-14  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/50797
	* config/i386/i386-opts.h (pmode): New.

	* config/i386/i386.c (ix86_option_override_internal): Properly
	check and set ix86_pmode.

	* config/i386/i386.h (Pmode): Check ix86_pmode instead of
	TARGET_64BIT.

	* config/i386/i386.opt (maddress-mode=): New.

	* doc/invoke.texi: Document -maddress-mode=short|long for x86.

From-SVN: r185396