r246443 - in /trunk/gcc: config/s390/s390.c tes...

[krebbel@gcc.gnu.org]

Author: krebbel
Date: Fri Mar 24 13:52:30 2017
New Revision: 246443

URL: https://gcc.gnu.org/viewcvs?rev=246443&root=gcc&view=rev
Log:
S/390: PR79904: Disallow reg + sym_ref literal pool addresses.

We accept reg + sym_ref as valid address if sym_ref is a literal pool
reference knowing that it will be rewritten as r13 + reg + offset.
However, annotate_constant_pool_refs was never able to handle that.

With the patch only single sym_refs are accepted.

Regression tested on s390x.

2017-03-24  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	PR target/79904
	* config/s390/s390.c (s390_decompose_address): Reject reg +
	sym_ref literal pool references.

gcc/testsuite/ChangeLog:

2017-03-24  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.dg/ubsan/pr79904-2.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/ubsan/pr79904-2.c
Modified:
    trunk/gcc/config/s390/s390.c
    trunk/gcc/testsuite/ChangeLog