From 3058f7487e5b98f7af0219f77464294000c84bf0 Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Mon, 4 Apr 2016 13:20:26 +0200 Subject: 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) --- ChangeLog | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 3ecc89b750..c68136ca25 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2016-04-04 Stefan Liebler + + * 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 * sysdeps/s390/dl-procinfo.c (_dl_s390_cap_flags): Add z13. -- cgit v1.2.1