r193322 - in /trunk/gcc: ChangeLog config/sparc...

[davem@gcc.gnu.org]

Author: davem
Date: Thu Nov  8 03:26:49 2012
New Revision: 193322

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193322
Log:
Add extensive commentary to sparc's "U" constraint.

	* config/sparc/constraints.md ("U"): Document, in detail,
	which this constraint is necessary.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sparc/constraints.md