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| author | Stefan Liebler <stli@linux.vnet.ibm.com> | 2015-08-26 10:26:19 +0200 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2015-08-26 10:26:19 +0200 |
| commit | 4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb (patch) | |
| tree | 474a3cf443a605bae96d09127300e4f7204d78bc /io/posix_fallocate64.c | |
| parent | a1b0488fc9df3d895a2e5eefbcd348d3f7fe0e52 (diff) | |
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S390: configure check for vector instruction support in assembler.
The S390 specific test checks if the assembler has support for the new z13
vector instructions by compiling a vector instruction. The .machine and
.machinemode directives are needed to compile the vector instruction without
-march=z13 option on 31/64 bit.
On success the macro HAVE_S390_VX_ASM_SUPPORT is defined. This macro is used
to determine if the optimized functions can be build without compile errors.
If the used assembler lacks vector support, then a warning is dumped while
configuring and only the common code functions are build.
The z13 instruction support was introduced in
"[Committed] S/390: Add support for IBM z13."
(https://sourceware.org/ml/binutils/2015-01/msg00197.html)
ChangeLog:
* config.h.in (HAVE_S390_VX_ASM_SUPPORT): New macro undefine.
* sysdeps/s390/configure.ac: Add test for S390 vector instruction
assembler support.
* sysdeps/s390/configure: Regenerated.
Diffstat (limited to 'io/posix_fallocate64.c')
0 files changed, 0 insertions, 0 deletions