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PR libstdc++/84654 Disable __float128 specializations for -mno-float128

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2018-05-01  Tulio Magno Quites Machado Filho  <tuliom@linux.vnet.ibm.com>

	PR libstdc++/84654
	* acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
	* config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
	* configure: Regenerate.
	* include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
	based on ENABLE_FLOAT128.
	* include/Makefile.in: Regenerate.
	* include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
	[!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
	_GLIBCXX_USE_FLOAT128.

From-SVN: r259813
This commit is contained in:
Tulio Magno Quites Machado Filho 2018-05-01 22:47:33 +00:00 committed by Jonathan Wakely
parent dac920e8c8
commit f421e442c6
7 changed files with 67 additions and 20 deletions
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13
libstdc++-v3/ChangeLog
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@ -1,3 +1,16 @@
2018-05-01 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
PR libstdc++/84654
* acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
* config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
* configure: Regenerate.
* include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
based on ENABLE_FLOAT128.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
[!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
_GLIBCXX_USE_FLOAT128.
2018-04-24 H.J. Lu <hongjiu.lu@intel.com>
* configure: Regenerated.

5
libstdc++-v3/acinclude.m4
View File

@ -3062,7 +3062,7 @@ dnl Note: also checks that the types aren't standard types.
dnl
dnl Defines:
dnl _GLIBCXX_USE_INT128
dnl _GLIBCXX_USE_FLOAT128
dnl ENABLE_FLOAT128
dnl
AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [
@ -3117,13 +3117,12 @@ EOF
AC_MSG_CHECKING([for __float128])
if AC_TRY_EVAL(ac_compile); then
AC_DEFINE(_GLIBCXX_USE_FLOAT128, 1,
[Define if __float128 is supported on this host.])
enable_float128=yes
else
enable_float128=no
fi
AC_MSG_RESULT($enable_float128)
GLIBCXX_CONDITIONAL(ENABLE_FLOAT128, test $enable_float128 = yes)
rm -f conftest*
AC_LANG_RESTORE

3
libstdc++-v3/config.h.in
View File

@ -918,9 +918,6 @@
/* Define if fchmodat is available in <sys/stat.h>. */
#undef _GLIBCXX_USE_FCHMODAT
/* Define if __float128 is supported on this host. */
#undef _GLIBCXX_USE_FLOAT128
/* Defined if gettimeofday is available. */
#undef _GLIBCXX_USE_GETTIMEOFDAY

37
libstdc++-v3/configure vendored
View File

@ -729,6 +729,8 @@ BASIC_FILE_H
CSTDIO_H
SECTION_FLAGS
WERROR
ENABLE_FLOAT128_FALSE
ENABLE_FLOAT128_TRUE
thread_header
glibcxx_PCHFLAGS
GLIBCXX_BUILD_PCH_FALSE
@ -11606,7 +11608,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11609 "configure"
#line 11611 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -11712,7 +11714,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11715 "configure"
#line 11717 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -15398,7 +15400,7 @@ $as_echo "$glibcxx_cv_atomic_long_long" >&6; }
# Fake what AC_TRY_COMPILE does.
cat > conftest.$ac_ext << EOF
#line 15401 "configure"
#line 15403 "configure"
int main()
{
typedef bool atomic_type;
@ -15433,7 +15435,7 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15436 "configure"
#line 15438 "configure"
int main()
{
typedef short atomic_type;
@ -15468,7 +15470,7 @@ $as_echo "$glibcxx_cv_atomic_short" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15471 "configure"
#line 15473 "configure"
int main()
{
// NB: _Atomic_word not necessarily int.
@ -15504,7 +15506,7 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15507 "configure"
#line 15509 "configure"
int main()
{
typedef long long atomic_type;
@ -15585,7 +15587,7 @@ $as_echo "$as_me: WARNING: Performance of certain classes will degrade as a resu
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
#line 15588 "configure"
#line 15590 "configure"
int main()
{
_Decimal32 d1;
@ -15627,7 +15629,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
#line 15630 "configure"
#line 15632 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
@ -15661,7 +15663,7 @@ $as_echo "$enable_int128" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15664 "configure"
#line 15666 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
@ -15683,15 +15685,13 @@ $as_echo_n "checking for __float128... " >&6; }
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; then
$as_echo "#define _GLIBCXX_USE_FLOAT128 1" >>confdefs.h
enable_float128=yes
else
enable_float128=no
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_float128" >&5
$as_echo "$enable_float128" >&6; }
rm -f conftest*
ac_ext=c
@ -81248,6 +81248,15 @@ else
fi
if test $enable_float128 = yes; then
ENABLE_FLOAT128_TRUE=
ENABLE_FLOAT128_FALSE='#'
else
ENABLE_FLOAT128_TRUE='#'
ENABLE_FLOAT128_FALSE=
fi
if test $enable_libstdcxx_allocator_flag = new; then
ENABLE_ALLOCATOR_NEW_TRUE=
ENABLE_ALLOCATOR_NEW_FALSE='#'
@ -81791,6 +81800,10 @@ if test -z "${GLIBCXX_BUILD_PCH_TRUE}" && test -z "${GLIBCXX_BUILD_PCH_FALSE}";
as_fn_error "conditional \"GLIBCXX_BUILD_PCH\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${ENABLE_FLOAT128_TRUE}" && test -z "${ENABLE_FLOAT128_FALSE}"; then
as_fn_error "conditional \"ENABLE_FLOAT128\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${ENABLE_ALLOCATOR_NEW_TRUE}" && test -z "${ENABLE_ALLOCATOR_NEW_FALSE}"; then
as_fn_error "conditional \"ENABLE_ALLOCATOR_NEW\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5

13
libstdc++-v3/include/Makefile.am
View File

@ -1230,6 +1230,14 @@ stamp-allocator-new:
echo 0 > stamp-allocator-new
endif
if ENABLE_FLOAT128
stamp-float128:
echo 1 > stamp-float128
else
stamp-float128:
echo 0 > stamp-float128
endif
# NB: The non-empty default ldbl_compat works around an AIX sed
# oddity, see libstdc++/31957 for details.
${host_builddir}/c++config.h: ${CONFIG_HEADER} \
@ -1241,7 +1249,8 @@ ${host_builddir}/c++config.h: ${CONFIG_HEADER} \
stamp-extern-template \
stamp-dual-abi \
stamp-cxx11-abi \
stamp-allocator-new
stamp-allocator-new \
stamp-float128
@date=`cat ${toplevel_srcdir}/gcc/DATESTAMP` ;\
release=`sed 's/^\([0-9]*\).*$$/\1/' ${toplevel_srcdir}/gcc/BASE-VER` ;\
ns_version=`cat stamp-namespace-version` ;\
@ -1250,6 +1259,7 @@ ${host_builddir}/c++config.h: ${CONFIG_HEADER} \
dualabi=`cat stamp-dual-abi` ;\
cxx11abi=`cat stamp-cxx11-abi` ;\
allocatornew=`cat stamp-allocator-new` ;\
float128=`cat stamp-float128` ;\
ldbl_compat='s,g,g,' ;\
grep "^[ ]*#[ ]*define[ ][ ]*_GLIBCXX_LONG_DOUBLE_COMPAT[ ][ ]*1[ ]*$$" \
${CONFIG_HEADER} > /dev/null 2>&1 \
@ -1262,6 +1272,7 @@ ${host_builddir}/c++config.h: ${CONFIG_HEADER} \
-e "s,define _GLIBCXX_USE_DUAL_ABI, define _GLIBCXX_USE_DUAL_ABI $$dualabi," \
-e "s,define _GLIBCXX_USE_CXX11_ABI, define _GLIBCXX_USE_CXX11_ABI $$cxx11abi," \
-e "s,define _GLIBCXX_USE_ALLOCATOR_NEW, define _GLIBCXX_USE_ALLOCATOR_NEW $$allocatornew," \
-e "s,define _GLIBCXX_USE_FLOAT128, define _GLIBCXX_USE_FLOAT128 $$float128," \
-e "$$ldbl_compat" \
< ${glibcxx_srcdir}/include/bits/c++config > $@ ;\
sed -e 's/HAVE_/_GLIBCXX_HAVE_/g' \

10
libstdc++-v3/include/Makefile.in
View File

@ -1662,6 +1662,11 @@ stamp-host: ${host_headers} ${bits_host_headers} ${ext_host_headers} ${host_head
@ENABLE_ALLOCATOR_NEW_FALSE@stamp-allocator-new:
@ENABLE_ALLOCATOR_NEW_FALSE@ echo 0 > stamp-allocator-new
@ENABLE_FLOAT128_TRUE@stamp-float128:
@ENABLE_FLOAT128_TRUE@ echo 1 > stamp-float128
@ENABLE_FLOAT128_FALSE@stamp-float128:
@ENABLE_FLOAT128_FALSE@ echo 0 > stamp-float128
# NB: The non-empty default ldbl_compat works around an AIX sed
# oddity, see libstdc++/31957 for details.
${host_builddir}/c++config.h: ${CONFIG_HEADER} \
@ -1673,7 +1678,8 @@ ${host_builddir}/c++config.h: ${CONFIG_HEADER} \
stamp-extern-template \
stamp-dual-abi \
stamp-cxx11-abi \
stamp-allocator-new
stamp-allocator-new \
stamp-float128
@date=`cat ${toplevel_srcdir}/gcc/DATESTAMP` ;\
release=`sed 's/^\([0-9]*\).*$$/\1/' ${toplevel_srcdir}/gcc/BASE-VER` ;\
ns_version=`cat stamp-namespace-version` ;\
@ -1682,6 +1688,7 @@ ${host_builddir}/c++config.h: ${CONFIG_HEADER} \
dualabi=`cat stamp-dual-abi` ;\
cxx11abi=`cat stamp-cxx11-abi` ;\
allocatornew=`cat stamp-allocator-new` ;\
float128=`cat stamp-float128` ;\
ldbl_compat='s,g,g,' ;\
grep "^[ ]*#[ ]*define[ ][ ]*_GLIBCXX_LONG_DOUBLE_COMPAT[ ][ ]*1[ ]*$$" \
${CONFIG_HEADER} > /dev/null 2>&1 \
@ -1694,6 +1701,7 @@ ${host_builddir}/c++config.h: ${CONFIG_HEADER} \
-e "s,define _GLIBCXX_USE_DUAL_ABI, define _GLIBCXX_USE_DUAL_ABI $$dualabi," \
-e "s,define _GLIBCXX_USE_CXX11_ABI, define _GLIBCXX_USE_CXX11_ABI $$cxx11abi," \
-e "s,define _GLIBCXX_USE_ALLOCATOR_NEW, define _GLIBCXX_USE_ALLOCATOR_NEW $$allocatornew," \
-e "s,define _GLIBCXX_USE_FLOAT128, define _GLIBCXX_USE_FLOAT128 $$float128," \
-e "$$ldbl_compat" \
< ${glibcxx_srcdir}/include/bits/c++config > $@ ;\
sed -e 's/HAVE_/_GLIBCXX_HAVE_/g' \

6
libstdc++-v3/include/bits/c++config
View File

@ -609,4 +609,10 @@ namespace std
# endif
#endif
/* Define if __float128 is supported on this host. */
#define _GLIBCXX_USE_FLOAT128
#if !defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)
#undef _GLIBCXX_USE_FLOAT128
#endif
// End of prewritten config; the settings discovered at configure time follow.