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Add check for certain POWER8/9 intrinsic in altivec.h to configure

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This commit is contained in:
Martijn van Beurden 2021-06-30 08:12:52 +02:00
parent a4156cd78b
commit d15bcf80a0
1 changed files with 11 additions and 1 deletions
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12
configure.ac
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@ -182,6 +182,16 @@ if test x"$have_cpu_power9" = xyes ; then
AH_TEMPLATE(FLAC__HAS_TARGET_POWER9, [define if compiler has __attribute__((target("cpu=power9"))) support]) AH_TEMPLATE(FLAC__HAS_TARGET_POWER9, [define if compiler has __attribute__((target("cpu=power9"))) support])
fi fi
if test x"$have_cpu_power8" = xyes || test x"$have_cpu_power9" = xyes ; then
AC_MSG_CHECKING([whether altivec.h has vec_doubleh()])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <altivec.h>]],
[[vector float d = {0.0f,0.0f,0.0f,0.0f}; vec_doubleh(d);]])],
[AC_MSG_RESULT([yes])
has_vec_doubleh=true],
[AC_MSG_RESULT([no])])
fi
fi fi
case "$host" in case "$host" in
@ -257,7 +267,7 @@ AS_HELP_STRING([--disable-vsx],[Disable VSX optimizations]),
*) AC_MSG_ERROR(bad value ${enableval} for --enable-vsx) ;; *) AC_MSG_ERROR(bad value ${enableval} for --enable-vsx) ;;
esac],[use_vsx=true]) esac],[use_vsx=true])
AM_CONDITIONAL(FLaC__USE_VSX, test "x$use_vsx" = xtrue) AM_CONDITIONAL(FLaC__USE_VSX, test "x$use_vsx" = xtrue)
if test "x$use_vsx" = xtrue ; then if test "x$use_vsx$has_vec_doubleh" = xtruetrue ; then
AC_DEFINE(FLAC__USE_VSX) AC_DEFINE(FLAC__USE_VSX)
AH_TEMPLATE(FLAC__USE_VSX, [define to enable use of VSX instructions]) AH_TEMPLATE(FLAC__USE_VSX, [define to enable use of VSX instructions])
fi fi