glibc/sysdeps/sparc/configure.in
David S. Miller eae47a3618 Add framework for using sparc VIS3 instructions, use it for copysign/signbit.
* sysdeps/sparc/configure.in: New file.
	* sysdeps/sparc/configure: Generate.
	* configure.in (libc_cv_sparc_as_vis3): Substitute.
	* configure: Regenerate.
	* config.h.in (HAVE_AS_VIS3_SUPPORT): New.
	* config.make.in (have-as-vis3): New.
	* sysdeps/sparc/sparc32/sparcv9/Makefile (ASFLAGS-*): If VIS3 is
	available use -Av9d instead of -Av9a.
	* sysdeps/sparc/sparc64/Makefile: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign-vis3.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf-vis3.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/Makefile: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbit-vis3.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf-vis3.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S: New file.
2012-03-14 16:43:09 -07:00

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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/sparc.
# Check for support of VIS3 et al. instructions in the assembler.
AC_CACHE_CHECK(for sparc assembler VIS3 support, libc_cv_sparc_as_vis3, [dnl
cat > conftest.S <<\EOF
.text
foo: fmadds %f1, %f2, %f3, %f5
fmaddd %f2, %f4, %f8, %f10
fhadds %f2, %f3, %f5
fhaddd %f4, %f8, %f10
pdistn %f2, %f4, %g1
movdtox %f10, %o0
movstouw %f9, %o1
movstosw %f7, %o2
movxtod %o3, %f18
movwtos %o4, %f15
flcmps %fcc0, %f3, %f5
flcmpd %fcc1, %f4, %f6
EOF
dnl
if AC_TRY_COMMAND([${CC-cc} -c $CFLAGS -Wa,-Av9d conftest.S]); then
libc_cv_sparc_as_vis3=yes
else
libc_cv_sparc_as_vis3=no
fi
rm -f conftest*])
if test $libc_cv_sparc_as_vis3 = yes; then
AC_DEFINE(HAVE_AS_VIS3_SUPPORT)
fi