summaryrefslogtreecommitdiff
path: root/config.h.in
diff options
context:
space:
mode:
authorStefan Liebler <stli@linux.vnet.ibm.com>2015-08-26 10:26:19 +0200
committerAndreas Krebbel <krebbel@linux.vnet.ibm.com>2015-08-26 10:26:19 +0200
commit4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb (patch)
tree474a3cf443a605bae96d09127300e4f7204d78bc /config.h.in
parenta1b0488fc9df3d895a2e5eefbcd348d3f7fe0e52 (diff)
downloadglibc-4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb.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.
Diffstat (limited to 'config.h.in')
-rw-r--r--config.h.in3
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