r262079 - in /branches/gcc-6-branch/gcc: Change...

[jakub@gcc.gnu.org]

Author: jakub
Date: Mon Jun 25 17:34:55 2018
New Revision: 262079

URL: https://gcc.gnu.org/viewcvs?rev=262079&root=gcc&view=rev
Log:
	Backported from mainline
	2018-03-16  Jakub Jelinek  <jakub@redhat.com>

	PR target/84899
	* postreload.c (reload_combine_recognize_pattern): Perform
	INTVAL addition in unsigned HOST_WIDE_INT type to avoid UB and
	truncate_int_for_mode the result for the destination's mode.

	* gcc.dg/pr84899.c: New test.

Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/pr84899.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/postreload.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog