|
 |
147e83 |
From 2d04109858181ed8c7dc3e4ae42923a26c1d3591 Mon Sep 17 00:00:00 2001
|
|
|
147e83 |
From: Stefan Liebler <stli@linux.vnet.ibm.com>
|
|
|
147e83 |
Date: Thu, 8 Oct 2015 10:47:37 +0200
|
|
|
147e83 |
Subject: [PATCH 08/30] S390: configure check for vector instruction support in
|
|
|
147e83 |
assembler.
|
|
|
147e83 |
|
|
|
147e83 |
upstream-commit-id: 4f0a1cea34c05fb2acc16f1a2d291f53230eb4fb
|
|
|
147e83 |
https://www.sourceware.org/ml/libc-alpha/2015-07/msg00153.html
|
|
|
147e83 |
|
|
|
147e83 |
The S390 specific test checks if the assembler has support for the new z13
|
|
|
147e83 |
vector instructions by compiling a vector instruction. The .machine and
|
|
|
147e83 |
.machinemode directives are needed to compile the vector instruction without
|
|
|
147e83 |
-march=z13 option on 31/64 bit.
|
|
|
147e83 |
On success the macro HAVE_S390_VX_ASM_SUPPORT is defined. This macro is used
|
|
|
147e83 |
to determine if the optimized functions can be build without compile errors.
|
|
|
147e83 |
If the used assembler lacks vector support, then a warning is dumped while
|
|
|
147e83 |
configuring and only the common code functions are build.
|
|
|
147e83 |
|
|
|
147e83 |
The z13 instruction support was introduced in
|
|
|
147e83 |
"[Committed] S/390: Add support for IBM z13."
|
|
|
147e83 |
(https://sourceware.org/ml/binutils/2015-01/msg00197.html)
|
|
|
147e83 |
|
|
|
147e83 |
ChangeLog:
|
|
|
147e83 |
|
|
|
147e83 |
* config.h.in (HAVE_S390_VX_ASM_SUPPORT): New macro undefine.
|
|
|
147e83 |
* sysdeps/s390/configure.ac: Add test for S390 vector instruction
|
|
|
147e83 |
assembler support.
|
|
|
147e83 |
* sysdeps/s390/configure: Regenerated.
|
|
|
147e83 |
---
|
|
|
147e83 |
config.h.in | 3 +++
|
|
|
147e83 |
sysdeps/s390/configure | 39 +++++++++++++++++++++++++++++++++++++++
|
|
|
147e83 |
sysdeps/s390/configure.in | 27 +++++++++++++++++++++++++++
|
|
|
147e83 |
3 files changed, 69 insertions(+)
|
|
|
147e83 |
|
|
|
147e83 |
diff --git a/config.h.in b/config.h.in
|
|
|
147e83 |
index 68321d4..f7f2388 100644
|
|
|
147e83 |
--- a/config.h.in
|
|
|
147e83 |
+++ b/config.h.in
|
|
|
147e83 |
@@ -110,6 +110,9 @@
|
|
|
147e83 |
/* Define if assembler supports Intel MPX. */
|
|
|
147e83 |
#undef HAVE_MPX_SUPPORT
|
|
|
147e83 |
|
|
|
147e83 |
+/* Define if assembler supports vector instructions on S390. */
|
|
|
147e83 |
+#undef HAVE_S390_VX_ASM_SUPPORT
|
|
|
147e83 |
+
|
|
|
147e83 |
/* Define if gcc supports FMA4. */
|
|
|
147e83 |
#undef HAVE_FMA4_SUPPORT
|
|
|
147e83 |
|
|
|
147e83 |
diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure
|
|
|
147e83 |
index 669bb9b..cc4c1e0 100644
|
|
|
147e83 |
--- a/sysdeps/s390/configure
|
|
|
147e83 |
+++ b/sysdeps/s390/configure
|
|
|
147e83 |
@@ -3,3 +3,42 @@
|
|
|
147e83 |
|
|
|
147e83 |
$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
|
|
|
147e83 |
|
|
|
147e83 |
+
|
|
|
147e83 |
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 vector instruction support" >&5
|
|
|
147e83 |
+$as_echo_n "checking for S390 vector instruction support... " >&6; }
|
|
|
147e83 |
+if ${libc_cv_asm_s390_vx+:} false; then :
|
|
|
147e83 |
+ $as_echo_n "(cached) " >&6
|
|
|
147e83 |
+else
|
|
|
147e83 |
+ cat > conftest.c <<\EOF
|
|
|
147e83 |
+void testvecinsn ()
|
|
|
147e83 |
+{
|
|
|
147e83 |
+ __asm__ (".machine \"z13\" \n\t"
|
|
|
147e83 |
+ ".machinemode \"zarch_nohighgprs\" \n\t"
|
|
|
147e83 |
+ "vistrbs %%v16,%%v17 \n\t"
|
|
|
147e83 |
+ "locghie %%r1,0" : :);
|
|
|
147e83 |
+}
|
|
|
147e83 |
+EOF
|
|
|
147e83 |
+if { ac_try='${CC-cc} --shared conftest.c -o conftest.o &> /dev/null'
|
|
|
147e83 |
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
|
|
|
147e83 |
+ (eval $ac_try) 2>&5
|
|
|
147e83 |
+ ac_status=$?
|
|
|
147e83 |
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
|
|
147e83 |
+ test $ac_status = 0; }; } ;
|
|
|
147e83 |
+then
|
|
|
147e83 |
+ libc_cv_asm_s390_vx=yes
|
|
|
147e83 |
+else
|
|
|
147e83 |
+ libc_cv_asm_s390_vx=no
|
|
|
147e83 |
+fi
|
|
|
147e83 |
+rm -f conftest*
|
|
|
147e83 |
+fi
|
|
|
147e83 |
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_s390_vx" >&5
|
|
|
147e83 |
+$as_echo "$libc_cv_asm_s390_vx" >&6; }
|
|
|
147e83 |
+
|
|
|
147e83 |
+if test "$libc_cv_asm_s390_vx" = yes ;
|
|
|
147e83 |
+then
|
|
|
147e83 |
+ $as_echo "#define HAVE_S390_VX_ASM_SUPPORT 1" >>confdefs.h
|
|
|
147e83 |
+
|
|
|
147e83 |
+else
|
|
|
147e83 |
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Use binutils with vector-support in order to use optimized implementations." >&5
|
|
|
147e83 |
+$as_echo "$as_me: WARNING: Use binutils with vector-support in order to use optimized implementations." >&2;}
|
|
|
147e83 |
+fi
|
|
|
147e83 |
diff --git a/sysdeps/s390/configure.in b/sysdeps/s390/configure.in
|
|
|
147e83 |
index b5af4e1..733e356 100644
|
|
|
147e83 |
--- a/sysdeps/s390/configure.in
|
|
|
147e83 |
+++ b/sysdeps/s390/configure.in
|
|
|
147e83 |
@@ -4,3 +4,30 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
|
|
|
147e83 |
dnl It is always possible to access static and hidden symbols in an
|
|
|
147e83 |
dnl position independent way.
|
|
|
147e83 |
AC_DEFINE(PI_STATIC_AND_HIDDEN)
|
|
|
147e83 |
+
|
|
|
147e83 |
+AC_CACHE_CHECK(for S390 vector instruction support, libc_cv_asm_s390_vx, [dnl
|
|
|
147e83 |
+cat > conftest.c <<\EOF
|
|
|
147e83 |
+void testvecinsn ()
|
|
|
147e83 |
+{
|
|
|
147e83 |
+ __asm__ (".machine \"z13\" \n\t"
|
|
|
147e83 |
+ ".machinemode \"zarch_nohighgprs\" \n\t"
|
|
|
147e83 |
+ "vistrbs %%v16,%%v17 \n\t"
|
|
|
147e83 |
+ "locghie %%r1,0" : :);
|
|
|
147e83 |
+}
|
|
|
147e83 |
+EOF
|
|
|
147e83 |
+dnl
|
|
|
147e83 |
+dnl test, if assembler supports S390 vector instructions
|
|
|
147e83 |
+if AC_TRY_COMMAND([${CC-cc} --shared conftest.c -o conftest.o &> /dev/null]) ;
|
|
|
147e83 |
+then
|
|
|
147e83 |
+ libc_cv_asm_s390_vx=yes
|
|
|
147e83 |
+else
|
|
|
147e83 |
+ libc_cv_asm_s390_vx=no
|
|
|
147e83 |
+fi
|
|
|
147e83 |
+rm -f conftest* ])
|
|
|
147e83 |
+
|
|
|
147e83 |
+if test "$libc_cv_asm_s390_vx" = yes ;
|
|
|
147e83 |
+then
|
|
|
147e83 |
+ AC_DEFINE(HAVE_S390_VX_ASM_SUPPORT)
|
|
|
147e83 |
+else
|
|
|
147e83 |
+ AC_MSG_WARN([Use binutils with vector-support in order to use optimized implementations.])
|
|
|
147e83 |
+fi
|
|
|
147e83 |
--
|
|
|
147e83 |
2.3.0
|
|
|
147e83 |
|