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| author | Stefan Liebler <stli@linux.vnet.ibm.com> | 2016-04-04 13:20:26 +0200 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.vnet.ibm.com> | 2016-04-04 13:20:26 +0200 |
| commit | 3058f7487e5b98f7af0219f77464294000c84bf0 (patch) | |
| tree | 859d61fbba55c88c52f5f4f1e1d2e8bed00368d4 /ChangeLog | |
| parent | 66cdb5b20df45c4eb28ab27ebcfb67ef023338e3 (diff) | |
| download | glibc-3058f7487e5b98f7af0219f77464294000c84bf0.tar.gz | |
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.
(cherry picked from commit 4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb)
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -1,5 +1,12 @@ 2016-04-04 Stefan Liebler <stli@linux.vnet.ibm.com> + * 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. + +2016-04-04 Stefan Liebler <stli@linux.vnet.ibm.com> + * sysdeps/s390/dl-procinfo.c (_dl_s390_cap_flags): Add z13. * sysdeps/s390/dl-procinfo.h (_DL_PLATFORMS_COUNT): Increased. |