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| author | Stefan Liebler <stli@linux.vnet.ibm.com> | 2016-04-04 12:54:22 +0200 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2016-04-04 14:58:54 -0400 |
| commit | a3195f733dc383a8baeb0d178ee77b819efffaeb (patch) | |
| tree | f074b852d01f964f2d11e5018aa43f9c34d02814 /config.h.in | |
| parent | ee91916b2158b68b8730e1bf815260466b4d0cbc (diff) | |
| download | glibc-a3195f733dc383a8baeb0d178ee77b819efffaeb.tar glibc-a3195f733dc383a8baeb0d178ee77b819efffaeb.tar.gz glibc-a3195f733dc383a8baeb0d178ee77b819efffaeb.tar.bz2 glibc-a3195f733dc383a8baeb0d178ee77b819efffaeb.zip | |
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)
(cherry picked from commit 5fc92dc17d6a2eb6420cef33d8d6bd3a84bb968c)
Diffstat (limited to 'config.h.in')
| -rw-r--r-- | config.h.in | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/config.h.in b/config.h.in index 2b9aa1a986..8d44b8a7a9 100644 --- a/config.h.in +++ b/config.h.in @@ -91,6 +91,9 @@ /* Define if assembler supports AVX512. */ #undef HAVE_AVX512_ASM_SUPPORT +/* Define if assembler supports vector instructions on S390. */ +#undef HAVE_S390_VX_ASM_SUPPORT + /* Define if assembler supports Intel MPX. */ #undef HAVE_MPX_SUPPORT |