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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 /config.h.in | |
| parent | a1b0488fc9df3d895a2e5eefbcd348d3f7fe0e52 (diff) | |
| download | glibc-4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb.zip glibc-4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb.tar.gz glibc-4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb.tar.bz2 | |
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 '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 2b9aa1a..8d44b8a 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 |