r263165 - in /trunk/gcc: ChangeLog config/s390/...

[krebbel@gcc.gnu.org]

Author: krebbel
Date: Tue Jul 31 15:41:59 2018
New Revision: 263165

URL: https://gcc.gnu.org/viewcvs?rev=263165&root=gcc&view=rev
Log:
S/390: Don't emit prefetch instructions for clrmem

gcc/ChangeLog:

2018-07-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	* config/s390/s390.c (s390_expand_setmem): Make the unrolling to
	depend on whether prefetch instructions will be emitted or not.
	Use TARGET_SETMEM_PFD for checking whether prefetch instructions
	will be emitted or not.
	* config/s390/s390.h (TARGET_SETMEM_PREFETCH_DISTANCE)
	(TARGET_SETMEM_PFD): New macros.

gcc/testsuite/ChangeLog:

2018-07-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	* gcc.target/s390/memset-1.c: Improve testcase.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/s390/s390.c
    trunk/gcc/config/s390/s390.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/s390/memset-1.c