r246002 - in /trunk/gcc: ChangeLog gimple-expr....

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Mar  9 13:20:50 2017
New Revision: 246002

URL: https://gcc.gnu.org/viewcvs?rev=246002&root=gcc&view=rev
Log:
2017-03-09  Richard Biener  <rguenther@suse.de>

	PR middle-end/79971
	* gimple-expr.c (useless_type_conversion_p): Preserve
	TYPE_SATURATING for fixed-point types.

	* gcc.dg/fixed-point/pr79971.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/fixed-point/pr79971.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-expr.c
    trunk/gcc/testsuite/ChangeLog