r229714 - in /trunk/gcc: ChangeLog gimple-expr....

[ebotcazou@gcc.gnu.org]

Author: ebotcazou
Date: Tue Nov  3 17:19:30 2015
New Revision: 229714

URL: https://gcc.gnu.org/viewcvs?rev=229714&root=gcc&view=rev
Log:
	* gimple-expr.c (useless_type_conversion_p): Reinstate type canonical
	check for aggregate types and beef up comment for mode check.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-expr.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gnat.dg/discr45.adb