[Bug target/92950] Wrong load instructions emitted for movv1qi

[krebbel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92950

--- Comment #3 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Tue Dec 17 08:41:54 2019
New Revision: 279454

URL: https://gcc.gnu.org/viewcvs?rev=279454&root=gcc&view=rev
Log:
Fix PR92950: Wrong code emitted for movv1qi

The backend emits 16 bit memory loads for single element character
vector.  As a result the character will not be right justified in the
GPR.

gcc/ChangeLog:

2019-12-17  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2019-12-16  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR target/92950
        * config/s390/vector.md ("mov<mode>" for V_8): Replace lh, lhy,
        and lhrl with llc.

gcc/testsuite/ChangeLog:

2019-12-17  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2019-12-16  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR target/92950
        * gcc.target/s390/vector/pr92950.c: New test.


Added:
    branches/gcc-8-branch/gcc/testsuite/gcc.target/s390/vector/pr92950.c
Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/config/s390/vector.md
    branches/gcc-8-branch/gcc/testsuite/ChangeLog