r246455 - in /trunk/gcc: ChangeLog config/s390/...

[krebbel@gcc.gnu.org]

Author: krebbel
Date: Fri Mar 24 14:01:54 2017
New Revision: 246455

URL: https://gcc.gnu.org/viewcvs?rev=246455&root=gcc&view=rev
Log:
S/390: arch12: Add vllezlf instruction.

This adds support for the vector load element and zero instruction and
makes sure it is used when initializing vectors with elements while
setting the rest to 0.

gcc/ChangeLog:

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

	* config/s390/s390.c (s390_expand_vec_init): Use vllezl
	instruction if possible.
	* config/s390/vector.md (vec_halfnumelts): New mode
	attribute.
	("*vec_vllezlf<mode>"): New pattern.

gcc/testsuite/ChangeLog:

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

	* gcc.target/s390/vxe/vllezlf-1.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/s390/vxe/vllezlf-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/s390/s390.c
    trunk/gcc/config/s390/vector.md
    trunk/gcc/testsuite/ChangeLog