r279878 - in /branches/ibm/pcrel-trunk/gcc: Cha...

[meissner@gcc.gnu.org]

Author: meissner
Date: Sat Jan  4 00:35:31 2020
New Revision: 279878

URL: https://gcc.gnu.org/viewcvs?rev=279878&root=gcc&view=rev
Log:
Fix vector extract element from memory issues.

2020-01-03  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/rs6000.c (rs6000_adjust_vec_address): Add
	gcc_assert tests to make sure the temporary register is safe to
	use.  If the element number is variable, make sure it does not go
	beyond the number of elements in the vector.  Simplify testing for
	illegal address offsets.
	(rs6000_split_vec_extract_var): Move the code for restricting the
	variable element number for vectors in memory to the
	rs6000_adjust_vec_address function.


Modified:
    branches/ibm/pcrel-trunk/gcc/ChangeLog.meissner
    branches/ibm/pcrel-trunk/gcc/config/rs6000/rs6000.c