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| author | Andreas Krebbel <krebbel@linux.ibm.com> | 2018-11-21 07:48:49 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2018-11-21 07:48:49 +0000 |
| commit | b8923037ef1b229326b7f238580d91bbbb76b8ff (patch) | |
| tree | c774c995e556775f66fd907b025e0e61f8f78669 /gcc/fortran/options.c | |
| parent | 98f08eb8939735c1e9cbc1ec5cadebe79e935c90 (diff) | |
| download | gcc-b8923037ef1b229326b7f238580d91bbbb76b8ff.zip gcc-b8923037ef1b229326b7f238580d91bbbb76b8ff.tar.gz gcc-b8923037ef1b229326b7f238580d91bbbb76b8ff.tar.bz2 | |
S/390: Support vector load/store alignment hints
The IBM z14 POP adds an optional alignment operand to the vl, vst,
vlm, and vstm instruction (vector loads and stores). Vectors residing
on 8 or 16 byte boundaries might get loaded or stored faster on some
models given the instruction uses the proper hint operand. A wrong
hint will hurt performance though.
The attached testcase align-1 currently fails due to:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88085
gcc/ChangeLog:
2018-11-21 Andreas Krebbel <krebbel@linux.ibm.com>
* configure.ac: Add check for Binutils to determine whether vector
load/store alignments hints are being supported.
* config.in: Regenerate.
* configure: Regenerate.
* config/s390/s390.c (print_operand): Support new output
modifier A.
* config/s390/s390.md ("movti"): Append alignment hint output
using the new output modifier 'A'.
* config/s390/vector.md ("mov<mode>", "*vec_tf_to_v1tf")
("*vec_ti_to_v1ti"): Likewise.
gcc/testsuite/ChangeLog:
2018-11-21 Andreas Krebbel <krebbel@linux.ibm.com>
* gcc.target/s390/vector/align-1.c: New test.
* gcc.target/s390/vector/align-2.c: New test.
From-SVN: r266336
Diffstat (limited to 'gcc/fortran/options.c')
0 files changed, 0 insertions, 0 deletions