Fix UBSAN errors in dse.c (PR rtl-optimization/82044).
commit89a03a5054d433e103a9fa565e37791096b17547
authormarxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 21 Nov 2017 13:39:14 +0000 (21 13:39 +0000)
committermarxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 21 Nov 2017 13:39:14 +0000 (21 13:39 +0000)
tree91c9d0c44fc7b5f85ce97e48bc0232423cb36f0b
parenteecc0d1efb049a057af214764bea6256db07828e
Fix UBSAN errors in dse.c (PR rtl-optimization/82044).

2017-11-21  Martin Liska  <mliska@suse.cz>

PR rtl-optimization/82044
PR tree-optimization/82042
* dse.c (check_mem_read_rtx): Check for overflow.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@255001 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/dse.c