luke
/
ngspice
mirror of https://git.code.sf.net/p/ngspice/ngspice
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

MODSIMD feature flag and test in configure.ac

This commit is contained in:
Florian Ballenegger 2020-07-15 14:46:34 +02:00
parent e9ccf4b0e0
commit 1e16fbf433
1 changed files with 60 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
configure.ac
View File

@ -69,7 +69,7 @@ AC_ARG_ENABLE([adms],
# --enable-pss: enable PSS Analysis
AC_ARG_ENABLE([pss],
[AS_HELP_STRING([--enable-pss], [Enable PSS Analysis, (experimental)])])
# --enable-relpath: Relative path for binary and data. Default is "no".
# ngspice shared may want relative paths for spinit etc.
AC_ARG_ENABLE([relpath],
@ -1183,6 +1183,65 @@ if test "x$enable_openmp" = xyes; then
AC_MSG_RESULT([OpenMP feature enabled])
fi
################# MODSIMD ##################################################
# --enable-modsimd: define MODSIMD in the code. This use simd acceleration in devices code
AC_ARG_ENABLE([modsimd],
[AS_HELP_STRING([--enable-modsimd], [Enable simd acceleration in some device models])])
if test "x$enable_modsimd" = xyes; then
OPENMPSIMD_CFLAGS = "-fopenmp-simd"
AC_MSG_CHECKING([for vector extension])
AC_TRY_COMPILE([
typedef double Vec4d __attribute__ ((vector_size (4*sizeof(double)), aligned (4*sizeof(double))));
],[
Vec4d v1,v2;
double s2;
v1 = (Vec4d) {1.0,2.0,3.141592,4.0};
s2 = 2.18;
v2 = v1 * s2;
],[
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
enable_modsimd=no
])
fi
# now check if intrinsics can be used
if test "x$enable_modsimd" = xyes; then
AC_MSG_CHECKING([x86 blend intrinsics])
AC_TRY_COMPILE([
#include <x86intrin.h>
typedef double Vec4d __attribute__ ((vector_size (4*sizeof(double)), aligned (4*sizeof(double))));
],[
Vec4d v1,v2;
v1 = (Vec4d) {1.0,2.0,3.141592,4.0};
v2 = v1 + 10.1;
v2 = _mm256_blendv_pd(v1,v2,(Vec4d) (v1>3.0));
],[
AC_MSG_RESULT([yes])
have_intrinsics=yes
], [
AC_MSG_RESULT([no])
have_intrinsics=no
])
fi
if test "x$enable_modsimd" = xyes; then
AC_DEFINE([BSIM3v32SIMD], [1], [simd acceleration for BSIM3V32 device])
if test "x$have_intrinsics" = xyes; then
AC_DEFINE([USEX86INTRINSICS], [1], [can use x86 simd intrinsics])
AC_MSG_RESULT([Use x86 simd intrinsics])
fi
AC_MSG_RESULT([MODSIMD feature enabled])
fi
AM_CONDITIONAL([WANT_MODSIMD], [test "x$enable_modsimd" = xyes])
# Output Files
# ------------