You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
3.5 KiB
114 lines
3.5 KiB
7 years ago
|
From 29f8926b153d59ba18f67ce5445dce66bacc0cbf Mon Sep 17 00:00:00 2001
|
||
|
|
From: Stefan Liebler <stli@linux.vnet.ibm.com>
|
||
|
|
Date: Mon, 7 Nov 2016 15:25:04 +0100
|
||
|
|
Subject: [PATCH 02/17] S390: Configure check for vector support in gcc.
|
||
|
|
|
||
|
|
Upstream commit 9b7f05599a92dead97d6683bc838a57bc63ac52b
|
||
|
|
|
||
|
|
The S390 specific test checks if the gcc has support for vector registers
|
||
|
|
by compiling an inline assembly which clobbers vector registers.
|
||
|
|
On success the macro HAVE_S390_VX_GCC_SUPPORT is defined.
|
||
|
|
This macro can be used to determine if e.g. clobbering vector registers
|
||
|
|
is allowed or not.
|
||
|
|
|
||
|
|
ChangeLog:
|
||
|
|
|
||
|
|
* config.h.in (HAVE_S390_VX_GCC_SUPPORT): New macro undefine.
|
||
|
|
* sysdeps/s390/configure.in: Add test for S390 vector register
|
||
|
|
support in gcc.
|
||
|
|
* sysdeps/s390/configure: Regenerated.
|
||
|
|
---
|
||
|
|
config.h.in | 4 ++++
|
||
|
|
sysdeps/s390/configure | 33 +++++++++++++++++++++++++++++++++
|
||
|
|
sysdeps/s390/configure.in | 22 ++++++++++++++++++++++
|
||
|
|
3 files changed, 59 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/config.h.in b/config.h.in
|
||
|
|
index f7f2388..62e04c7 100644
|
||
|
|
--- a/config.h.in
|
||
|
|
+++ b/config.h.in
|
||
|
|
@@ -113,6 +113,10 @@
|
||
|
|
/* Define if assembler supports vector instructions on S390. */
|
||
|
|
#undef HAVE_S390_VX_ASM_SUPPORT
|
||
|
|
|
||
|
|
+/* Define if gcc supports vector registers as clobbers in inline assembly
|
||
|
|
+ on S390. */
|
||
|
|
+#undef HAVE_S390_VX_GCC_SUPPORT
|
||
|
|
+
|
||
|
|
/* Define if gcc supports FMA4. */
|
||
|
|
#undef HAVE_FMA4_SUPPORT
|
||
|
|
|
||
|
|
diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure
|
||
|
|
index cc4c1e0..eb49a4c 100644
|
||
|
|
--- a/sysdeps/s390/configure
|
||
|
|
+++ b/sysdeps/s390/configure
|
||
|
|
@@ -42,3 +42,36 @@ else
|
||
|
|
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Use binutils with vector-support in order to use optimized implementations." >&5
|
||
|
|
$as_echo "$as_me: WARNING: Use binutils with vector-support in order to use optimized implementations." >&2;}
|
||
|
|
fi
|
||
|
|
+
|
||
|
|
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 vector support in gcc" >&5
|
||
|
|
+$as_echo_n "checking for S390 vector support in gcc... " >&6; }
|
||
|
|
+if ${libc_cv_gcc_s390_vx+:} false; then :
|
||
|
|
+ $as_echo_n "(cached) " >&6
|
||
|
|
+else
|
||
|
|
+ cat > conftest.c <<\EOF
|
||
|
|
+void testvecclobber ()
|
||
|
|
+{
|
||
|
|
+ __asm__ ("" : : : "v16");
|
||
|
|
+}
|
||
|
|
+EOF
|
||
|
|
+if { ac_try='${CC-cc} --shared conftest.c -o conftest.o &> /dev/null'
|
||
|
|
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
|
||
|
|
+ (eval $ac_try) 2>&5
|
||
|
|
+ ac_status=$?
|
||
|
|
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
||
|
|
+ test $ac_status = 0; }; } ;
|
||
|
|
+then
|
||
|
|
+ libc_cv_gcc_s390_vx=yes
|
||
|
|
+else
|
||
|
|
+ libc_cv_gcc_s390_vx=no
|
||
|
|
+fi
|
||
|
|
+rm -f conftest*
|
||
|
|
+fi
|
||
|
|
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_s390_vx" >&5
|
||
|
|
+$as_echo "$libc_cv_gcc_s390_vx" >&6; }
|
||
|
|
+
|
||
|
|
+if test "$libc_cv_gcc_s390_vx" = yes ;
|
||
|
|
+then
|
||
|
|
+ $as_echo "#define HAVE_S390_VX_GCC_SUPPORT 1" >>confdefs.h
|
||
|
|
+
|
||
|
|
+fi
|
||
|
|
diff --git a/sysdeps/s390/configure.in b/sysdeps/s390/configure.in
|
||
|
|
index 733e356..a3b1f25 100644
|
||
|
|
--- a/sysdeps/s390/configure.in
|
||
|
|
+++ b/sysdeps/s390/configure.in
|
||
|
|
@@ -31,3 +31,25 @@ then
|
||
|
|
else
|
||
|
|
AC_MSG_WARN([Use binutils with vector-support in order to use optimized implementations.])
|
||
|
|
fi
|
||
|
|
+
|
||
|
|
+AC_CACHE_CHECK(for S390 vector support in gcc, libc_cv_gcc_s390_vx, [dnl
|
||
|
|
+cat > conftest.c <<\EOF
|
||
|
|
+void testvecclobber ()
|
||
|
|
+{
|
||
|
|
+ __asm__ ("" : : : "v16");
|
||
|
|
+}
|
||
|
|
+EOF
|
||
|
|
+dnl
|
||
|
|
+dnl test, if gcc supports S390 vector registers as clobber in inline assembly
|
||
|
|
+if AC_TRY_COMMAND([${CC-cc} --shared conftest.c -o conftest.o &> /dev/null]) ;
|
||
|
|
+then
|
||
|
|
+ libc_cv_gcc_s390_vx=yes
|
||
|
|
+else
|
||
|
|
+ libc_cv_gcc_s390_vx=no
|
||
|
|
+fi
|
||
|
|
+rm -f conftest* ])
|
||
|
|
+
|
||
|
|
+if test "$libc_cv_gcc_s390_vx" = yes ;
|
||
|
|
+then
|
||
|
|
+ AC_DEFINE(HAVE_S390_VX_GCC_SUPPORT)
|
||
|
|
+fi
|
||
|
|
--
|
||
|
|
1.8.3.1
|