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-rw-r--r--libgcc/config.host4
-rw-r--r--libgcc/config/rs6000/fixkfti-sw.c (renamed from libgcc/config/rs6000/fixkfti.c)4
-rw-r--r--libgcc/config/rs6000/fixunskfti-sw.c (renamed from libgcc/config/rs6000/fixunskfti.c)4
-rw-r--r--libgcc/config/rs6000/float128-ifunc.c44
-rw-r--r--libgcc/config/rs6000/float128-p10.c71
-rw-r--r--libgcc/config/rs6000/float128-sed4
-rw-r--r--libgcc/config/rs6000/float128-sed-hw4
-rw-r--r--libgcc/config/rs6000/floattikf-sw.c (renamed from libgcc/config/rs6000/floattikf.c)4
-rw-r--r--libgcc/config/rs6000/floatuntikf-sw.c (renamed from libgcc/config/rs6000/floatuntikf.c)4
-rw-r--r--libgcc/config/rs6000/quad-float128.h17
-rw-r--r--libgcc/config/rs6000/t-float12812
-rw-r--r--libgcc/config/rs6000/t-float128-hw16
-rw-r--r--libgcc/config/rs6000/t-float128-p10-hw24
-rwxr-xr-xlibgcc/configure37
-rw-r--r--libgcc/configure.ac25
15 files changed, 251 insertions, 23 deletions
diff --git a/libgcc/config.host b/libgcc/config.host
index f808b61be70..50f00062232 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -1224,6 +1224,10 @@ powerpc*-*-linux*)
tmake_file="${tmake_file} rs6000/t-float128-hw"
fi
+ if test $libgcc_cv_powerpc_3_1_float128_hw = yes; then
+ tmake_file="${tmake_file} rs6000/t-float128-p10-hw"
+ fi
+
extra_parts="$extra_parts ecrti.o ecrtn.o ncrti.o ncrtn.o"
md_unwind_header=rs6000/linux-unwind.h
;;
diff --git a/libgcc/config/rs6000/fixkfti.c b/libgcc/config/rs6000/fixkfti-sw.c
index 0d965bc6253..cc000fca0f8 100644
--- a/libgcc/config/rs6000/fixkfti.c
+++ b/libgcc/config/rs6000/fixkfti-sw.c
@@ -5,7 +5,7 @@
This file is part of the GNU C Library.
Contributed by Steven Munroe (munroesj@linux.vnet.ibm.com)
Code is based on the main soft-fp library written by:
- Uros Bizjak (ubizjak@gmail.com).
+ Uros Bizjak (ubizjak@gmail.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -35,7 +35,7 @@
#include "quad-float128.h"
TItype
-__fixkfti (TFtype a)
+__fixkfti_sw (TFtype a)
{
FP_DECL_EX;
FP_DECL_Q (A);
diff --git a/libgcc/config/rs6000/fixunskfti.c b/libgcc/config/rs6000/fixunskfti-sw.c
index f285b4e3fbd..7a04d1a489a 100644
--- a/libgcc/config/rs6000/fixunskfti.c
+++ b/libgcc/config/rs6000/fixunskfti-sw.c
@@ -5,7 +5,7 @@
This file is part of the GNU C Library.
Contributed by Steven Munroe (munroesj@linux.vnet.ibm.com)
Code is based on the main soft-fp library written by:
- Uros Bizjak (ubizjak@gmail.com).
+ Uros Bizjak (ubizjak@gmail.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -35,7 +35,7 @@
#include "quad-float128.h"
UTItype
-__fixunskfti (TFtype a)
+__fixunskfti_sw (TFtype a)
{
FP_DECL_EX;
FP_DECL_Q (A);
diff --git a/libgcc/config/rs6000/float128-ifunc.c b/libgcc/config/rs6000/float128-ifunc.c
index 85380471c5e..57545dd7edb 100644
--- a/libgcc/config/rs6000/float128-ifunc.c
+++ b/libgcc/config/rs6000/float128-ifunc.c
@@ -46,14 +46,9 @@
#endif
#define SW_OR_HW(SW, HW) (__builtin_cpu_supports ("ieee128") ? HW : SW)
+#define SW_OR_HW_ISA3_1(SW, HW) (__builtin_cpu_supports ("arch_3_1") ? HW : SW)
/* Resolvers. */
-
-/* We do not provide ifunc resolvers for __fixkfti, __fixunskfti, __floattikf,
- and __floatuntikf. There is no ISA 3.0 instruction that converts between
- 128-bit integer types and 128-bit IEEE floating point, or vice versa. So
- use the emulator functions for these conversions. */
-
static __typeof__ (__addkf3_sw) *
__addkf3_resolve (void)
{
@@ -102,6 +97,18 @@ __floatdikf_resolve (void)
return SW_OR_HW (__floatdikf_sw, __floatdikf_hw);
}
+static __typeof__ (__floattikf_sw) *
+__floattikf_resolve (void)
+{
+ return SW_OR_HW_ISA3_1 (__floattikf_sw, __floattikf_hw);
+}
+
+static __typeof__ (__floatuntikf_sw) *
+__floatuntikf_resolve (void)
+{
+ return SW_OR_HW_ISA3_1 (__floatuntikf_sw, __floatuntikf_hw);
+}
+
static __typeof__ (__floatunsikf_sw) *
__floatunsikf_resolve (void)
{
@@ -114,6 +121,19 @@ __floatundikf_resolve (void)
return SW_OR_HW (__floatundikf_sw, __floatundikf_hw);
}
+
+static __typeof__ (__fixkfti_sw) *
+__fixkfti_resolve (void)
+{
+ return SW_OR_HW_ISA3_1 (__fixkfti_sw, __fixkfti_hw);
+}
+
+static __typeof__ (__fixunskfti_sw) *
+__fixunskfti_resolve (void)
+{
+ return SW_OR_HW_ISA3_1 (__fixunskfti_sw, __fixunskfti_hw);
+}
+
static __typeof__ (__fixkfsi_sw) *
__fixkfsi_resolve (void)
{
@@ -303,6 +323,18 @@ TFtype __floatsikf (SItype_ppc)
TFtype __floatdikf (DItype_ppc)
__attribute__ ((__ifunc__ ("__floatdikf_resolve")));
+TFtype __floattikf (TItype_ppc)
+ __attribute__ ((__ifunc__ ("__floattikf_resolve")));
+
+TFtype __floatuntikf (UTItype_ppc)
+ __attribute__ ((__ifunc__ ("__floatuntikf_resolve")));
+
+TItype_ppc __fixkfti (TFtype)
+ __attribute__ ((__ifunc__ ("__fixkfti_resolve")));
+
+UTItype_ppc __fixunskfti (TFtype)
+ __attribute__ ((__ifunc__ ("__fixunskfti_resolve")));
+
TFtype __floatunsikf (USItype_ppc)
__attribute__ ((__ifunc__ ("__floatunsikf_resolve")));
diff --git a/libgcc/config/rs6000/float128-p10.c b/libgcc/config/rs6000/float128-p10.c
new file mode 100644
index 00000000000..7f5d317631a
--- /dev/null
+++ b/libgcc/config/rs6000/float128-p10.c
@@ -0,0 +1,71 @@
+/* Automatic switching between software and hardware IEEE 128-bit
+ ISA 3.1 floating-point emulation for PowerPC.
+
+ Copyright (C) 2016-2020 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Carl Love (cel@us.ibm.com)
+ Code is based on the main soft-fp library written by:
+ Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* Note, the hardware conversion instructions for 128-bit integers are
+ supported for ISA 3.1 and later. Only compile this file with -mcpu=power10
+ or newer support. */
+
+#include <soft-fp.h>
+#include <quad-float128.h>
+
+#ifndef __FLOAT128_HARDWARE__
+#error "This module must be compiled with IEEE 128-bit hardware support"
+#endif
+
+#ifndef _ARCH_PWR10
+#error "This module must be compiled for Power 10 support"
+#endif
+
+TFtype
+__floattikf_hw (TItype_ppc a)
+{
+ return (TFtype) a;
+}
+
+TFtype
+__floatuntikf_hw (UTItype_ppc a)
+{
+ return (TFtype) a;
+}
+
+TItype_ppc
+__fixkfti_hw (TFtype a)
+{
+ return (TItype_ppc) a;
+}
+
+UTItype_ppc
+__fixunskfti_hw (TFtype a)
+{
+ return (UTItype_ppc) a;
+}
diff --git a/libgcc/config/rs6000/float128-sed b/libgcc/config/rs6000/float128-sed
index d9a089ff9ba..c0fcddb1959 100644
--- a/libgcc/config/rs6000/float128-sed
+++ b/libgcc/config/rs6000/float128-sed
@@ -8,6 +8,10 @@ s/__fixtfsi/__fixkfsi/g
s/__fixunstfdi/__fixunskfdi/g
s/__fixunstfsi/__fixunskfsi/g
s/__floatditf/__floatdikf/g
+s/__floattitf/__floattikf/g
+s/__floatuntitf/__floatuntikf/g
+s/__fixtfti/__fixkfti/g
+s/__fixunstfti/__fixunskfti/g
s/__floatsitf/__floatsikf/g
s/__floatunditf/__floatundikf/g
s/__floatunsitf/__floatunsikf/g
diff --git a/libgcc/config/rs6000/float128-sed-hw b/libgcc/config/rs6000/float128-sed-hw
index acf36b0c17d..3d2bf556da1 100644
--- a/libgcc/config/rs6000/float128-sed-hw
+++ b/libgcc/config/rs6000/float128-sed-hw
@@ -8,6 +8,10 @@ s/__fixtfsi/__fixkfsi_sw/g
s/__fixunstfdi/__fixunskfdi_sw/g
s/__fixunstfsi/__fixunskfsi_sw/g
s/__floatditf/__floatdikf_sw/g
+s/__floattitf/__floattikf_sw/g
+s/__floatuntitf/__floatuntikf_sw/g
+s/__fixtfti/__fixkfti_sw/g
+s/__fixunstfti/__fixunskfti_sw/g
s/__floatsitf/__floatsikf_sw/g
s/__floatunditf/__floatundikf_sw/g
s/__floatunsitf/__floatunsikf_sw/g
diff --git a/libgcc/config/rs6000/floattikf.c b/libgcc/config/rs6000/floattikf-sw.c
index cc5c7ca0fd0..4e1786cd229 100644
--- a/libgcc/config/rs6000/floattikf.c
+++ b/libgcc/config/rs6000/floattikf-sw.c
@@ -5,7 +5,7 @@
This file is part of the GNU C Library.
Contributed by Steven Munroe (munroesj@linux.vnet.ibm.com)
Code is based on the main soft-fp library written by:
- Uros Bizjak (ubizjak@gmail.com).
+ Uros Bizjak (ubizjak@gmail.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -35,7 +35,7 @@
#include "quad-float128.h"
TFtype
-__floattikf (TItype i)
+__floattikf_sw (TItype i)
{
FP_DECL_EX;
FP_DECL_Q (A);
diff --git a/libgcc/config/rs6000/floatuntikf.c b/libgcc/config/rs6000/floatuntikf-sw.c
index 96f2d3bdcb8..c4b814ddd68 100644
--- a/libgcc/config/rs6000/floatuntikf.c
+++ b/libgcc/config/rs6000/floatuntikf-sw.c
@@ -5,7 +5,7 @@
This file is part of the GNU C Library.
Contributed by Steven Munroe (munroesj@linux.vnet.ibm.com)
Code is based on the main soft-fp library written by:
- Uros Bizjak (ubizjak@gmail.com).
+ Uros Bizjak (ubizjak@gmail.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -35,7 +35,7 @@
#include "quad-float128.h"
TFtype
-__floatuntikf (UTItype i)
+__floatuntikf_sw (UTItype i)
{
FP_DECL_EX;
FP_DECL_Q (A);
diff --git a/libgcc/config/rs6000/quad-float128.h b/libgcc/config/rs6000/quad-float128.h
index 5beb1531d2b..c4d775b4ad3 100644
--- a/libgcc/config/rs6000/quad-float128.h
+++ b/libgcc/config/rs6000/quad-float128.h
@@ -88,19 +88,18 @@ extern USItype_ppc __fixunskfsi_sw (TFtype);
extern UDItype_ppc __fixunskfdi_sw (TFtype);
extern TFtype __floatsikf_sw (SItype_ppc);
extern TFtype __floatdikf_sw (DItype_ppc);
+extern TFtype __floattikf_sw (TItype_ppc);
extern TFtype __floatunsikf_sw (USItype_ppc);
extern TFtype __floatundikf_sw (UDItype_ppc);
+extern TFtype __floatuntikf_sw (UTItype_ppc);
+extern TItype_ppc __fixkfti_sw (TFtype);
+extern UTItype_ppc __fixunskfti_sw (TFtype);
extern IBM128_TYPE __extendkftf2_sw (TFtype);
extern TFtype __trunctfkf2_sw (IBM128_TYPE);
extern TCtype __mulkc3_sw (TFtype, TFtype, TFtype, TFtype);
extern TCtype __divkc3_sw (TFtype, TFtype, TFtype, TFtype);
#ifdef _ARCH_PPC64
-/* We do not provide ifunc resolvers for __fixkfti, __fixunskfti, __floattikf,
- and __floatuntikf. There is no ISA 3.0 instruction that converts between
- 128-bit integer types and 128-bit IEEE floating point, or vice versa. So
- use the emulator functions for these conversions. */
-
extern TItype_ppc __fixkfti (TFtype);
extern UTItype_ppc __fixunskfti (TFtype);
extern TFtype __floattikf (TItype_ppc);
@@ -131,8 +130,12 @@ extern USItype_ppc __fixunskfsi_hw (TFtype);
extern UDItype_ppc __fixunskfdi_hw (TFtype);
extern TFtype __floatsikf_hw (SItype_ppc);
extern TFtype __floatdikf_hw (DItype_ppc);
+extern TFtype __floattikf_hw (TItype_ppc);
extern TFtype __floatunsikf_hw (USItype_ppc);
extern TFtype __floatundikf_hw (UDItype_ppc);
+extern TFtype __floatuntikf_hw (UTItype_ppc);
+extern TItype_ppc __fixkfti_hw (TFtype);
+extern UTItype_ppc __fixunskfti_hw (TFtype);
extern IBM128_TYPE __extendkftf2_hw (TFtype);
extern TFtype __trunctfkf2_hw (IBM128_TYPE);
extern TCtype __mulkc3_hw (TFtype, TFtype, TFtype, TFtype);
@@ -163,8 +166,12 @@ extern USItype_ppc __fixunskfsi (TFtype);
extern UDItype_ppc __fixunskfdi (TFtype);
extern TFtype __floatsikf (SItype_ppc);
extern TFtype __floatdikf (DItype_ppc);
+extern TFtype __floattikf (TItype_ppc);
extern TFtype __floatunsikf (USItype_ppc);
extern TFtype __floatundikf (UDItype_ppc);
+extern TFtype __floatuntikf (UTItype_ppc);
+extern TItype_ppc __fixkfti (TFtype);
+extern UTItype_ppc __fixunskfti (TFtype);
extern IBM128_TYPE __extendkftf2 (TFtype);
extern TFtype __trunctfkf2 (IBM128_TYPE);
diff --git a/libgcc/config/rs6000/t-float128 b/libgcc/config/rs6000/t-float128
index d745f0d82e1..b09b5664af0 100644
--- a/libgcc/config/rs6000/t-float128
+++ b/libgcc/config/rs6000/t-float128
@@ -31,7 +31,8 @@ ibm128_dec_funcs = _tf_to_sd _tf_to_dd _tf_to_td \
_sd_to_tf _dd_to_tf _td_to_tf
# New functions for software emulation
-fp128_ppc_funcs = floattikf floatuntikf fixkfti fixunskfti \
+fp128_ppc_funcs = floattikf-sw floatuntikf-sw \
+ fixkfti-sw fixunskfti-sw \
extendkftf2-sw trunctfkf2-sw \
sfp-exceptions _mulkc3 _divkc3 _powikf2
@@ -47,13 +48,16 @@ fp128_ppc_obj = $(fp128_ppc_static_obj) $(fp128_ppc_shared_obj)
# All functions
fp128_funcs = $(fp128_softfp_funcs) $(fp128_ppc_funcs) \
- $(fp128_hw_funcs) $(fp128_ifunc_funcs)
+ $(fp128_hw_funcs) $(fp128_ifunc_funcs) \
+ $(fp128_3_1_hw_funcs)
fp128_src = $(fp128_softfp_src) $(fp128_ppc_src) \
- $(fp128_hw_src) $(fp128_ifunc_src)
+ $(fp128_hw_src) $(fp128_ifunc_src) \
+ $(fp128_3_1_hw_src)
fp128_obj = $(fp128_softfp_obj) $(fp128_ppc_obj) \
- $(fp128_hw_obj) $(fp128_ifunc_obj)
+ $(fp128_hw_obj) $(fp128_ifunc_obj) \
+ $(fp128_3_1_hw_obj)
fp128_sed = $(srcdir)/config/rs6000/float128-sed$(fp128_sed_hw)
fp128_dep = $(fp128_sed) $(srcdir)/config/rs6000/t-float128
diff --git a/libgcc/config/rs6000/t-float128-hw b/libgcc/config/rs6000/t-float128-hw
index d64ca4dd694..c0827366cc4 100644
--- a/libgcc/config/rs6000/t-float128-hw
+++ b/libgcc/config/rs6000/t-float128-hw
@@ -13,6 +13,13 @@ fp128_hw_static_obj = $(addsuffix $(objext),$(fp128_hw_funcs))
fp128_hw_shared_obj = $(addsuffix _s$(objext),$(fp128_hw_funcs))
fp128_hw_obj = $(fp128_hw_static_obj) $(fp128_hw_shared_obj)
+# New functions for ISA 3.1 hardware support
+fp128_3_1_hw_funcs = float128-p10
+fp128_3_1_hw_src = $(srcdir)/config/rs6000/float128-p10.c
+fp128_3_1_hw_static_obj = $(addsuffix $(objext),$(fp128_3_1_hw_funcs))
+fp128_3_1_hw_shared_obj = $(addsuffix _s$(objext),$(fp128_3_1_hw_funcs))
+fp128_3_1_hw_obj = $(fp128_3_1_hw_static_obj) $(fp128_3_1_hw_shared_obj)
+
fp128_ifunc_funcs = float128-ifunc
fp128_ifunc_src = $(srcdir)/config/rs6000/float128-ifunc.c
fp128_ifunc_static_obj = float128-ifunc$(objext)
@@ -30,9 +37,18 @@ FP128_CFLAGS_HW = -Wno-type-limits -mvsx -mfloat128 \
-I$(srcdir)/config/rs6000 \
$(FLOAT128_HW_INSNS)
+FP128_3_1_CFLAGS_HW = -Wno-type-limits -mvsx -mcpu=power10 \
+ -mfloat128-hardware -mno-gnu-attribute \
+ -I$(srcdir)/soft-fp \
+ -I$(srcdir)/config/rs6000 \
+ $(FLOAT128_HW_INSNS)
+
$(fp128_hw_obj) : INTERNAL_CFLAGS += $(FP128_CFLAGS_HW)
$(fp128_hw_obj) : $(srcdir)/config/rs6000/t-float128-hw
+$(fp128_3_1_hw_obj) : INTERNAL_CFLAGS += $(FP128_3_1_CFLAGS_HW)
+$(fp128_3_1_hw_obj) : $(srcdir)/config/rs6000/t-float128-p10-hw
+
$(fp128_ifunc_obj) : INTERNAL_CFLAGS += $(FP128_CFLAGS_SW)
$(fp128_ifunc_obj) : $(srcdir)/config/rs6000/t-float128-hw
diff --git a/libgcc/config/rs6000/t-float128-p10-hw b/libgcc/config/rs6000/t-float128-p10-hw
new file mode 100644
index 00000000000..de36227c3d1
--- /dev/null
+++ b/libgcc/config/rs6000/t-float128-p10-hw
@@ -0,0 +1,24 @@
+# Support for adding __float128 hardware support to the powerpc.
+# Tell the float128 functions that the ISA 3.1 hardware support can
+# be compiled it to be selected via IFUNC functions.
+
+FLOAT128_HW_INSNS = -DFLOAT128_HW_INSNS
+
+# New functions for hardware support
+
+fp128_3_1_hw_funcs = float128-p10
+fp128_3_1_hw_src = $(srcdir)/config/rs6000/float128-p10.c
+fp128_3_1_hw_static_obj = $(addsuffix $(objext),$(fp128_3_1_hw_funcs))
+fp128_3_1_hw_shared_obj = $(addsuffix _s$(objext),$(fp128_3_1_hw_funcs))
+fp128_3_1_hw_obj = $(fp128_3_1_hw_static_obj) $(fp128_3_1_hw_shared_obj)
+
+# Build the hardware support functions with appropriate hardware support
+FP128_3_1_CFLAGS_HW = -Wno-type-limits -mvsx -mfloat128 \
+ -mpower10 \
+ -mfloat128-hardware -mno-gnu-attribute \
+ -I$(srcdir)/soft-fp \
+ -I$(srcdir)/config/rs6000 \
+ $(FLOAT128_HW_INSNS)
+
+$(fp128_3_1_hw_obj) : INTERNAL_CFLAGS += $(FP128_3_1_CFLAGS_HW)
+$(fp128_3_1_hw_obj) : $(srcdir)/config/rs6000/t-float128-p10-hw
diff --git a/libgcc/configure b/libgcc/configure
index dd3afb2c957..ce05e0dd48b 100755
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -5263,6 +5263,43 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_float128_hw" >&5
$as_echo "$libgcc_cv_powerpc_float128_hw" >&6; }
CFLAGS="$saved_CFLAGS"
+
+ saved_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -mpower10 -mfloat128-hardware"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for PowerPC ISA 3.1 to build hardware __float128 libraries" >&5
+$as_echo_n "checking for PowerPC ISA 3.1 to build hardware __float128 libraries... " >&6; }
+if ${libgcc_cv_powerpc_float128_hw+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/auxv.h>
+ #ifndef AT_PLATFORM
+ #error "AT_PLATFORM is not defined"
+ #endif
+ #ifndef __BUILTIN_CPU_SUPPORTS__
+ #error "__builtin_cpu_supports is not available"
+ #endif
+ vector unsigned char add (vector unsigned char a, vector unsigned char b)
+ {
+ vector unsigned char ret;
+ __asm__ ("xscvsqqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b));
+ return ret;
+ }
+ void *add_resolver (void) { return (void *) add; }
+ __float128 add_ifunc (__float128, __float128)
+ __attribute__ ((__ifunc__ ("add_resolver")));
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ libgcc_cv_powerpc_3_1_float128_hw=yes
+else
+ libgcc_cv_powerpc_3_1_float128_hw=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_float128_hw" >&5
+ $as_echo "$libgcc_cv_powerpc_float128_hw" >&6; }
+ CFLAGS="$saved_CFLAGS"
esac
# Collect host-machine-specific information.
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index 10ffb046415..bc315dec7e4 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -458,6 +458,31 @@ powerpc*-*-linux*)
[libgcc_cv_powerpc_float128_hw=yes],
[libgcc_cv_powerpc_float128_hw=no])])
CFLAGS="$saved_CFLAGS"
+
+ saved_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -mpower10 -mfloat128-hardware"
+ AC_CACHE_CHECK([for PowerPC ISA 3.1 to build hardware __float128 libraries],
+ [libgcc_cv_powerpc_float128_hw],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_SOURCE([#include <sys/auxv.h>
+ #ifndef AT_PLATFORM
+ #error "AT_PLATFORM is not defined"
+ #endif
+ #ifndef __BUILTIN_CPU_SUPPORTS__
+ #error "__builtin_cpu_supports is not available"
+ #endif
+ vector unsigned char add (vector unsigned char a, vector unsigned char b)
+ {
+ vector unsigned char ret;
+ __asm__ ("xscvsqqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b));
+ return ret;
+ }
+ void *add_resolver (void) { return (void *) add; }
+ __float128 add_ifunc (__float128, __float128)
+ __attribute__ ((__ifunc__ ("add_resolver")));])],
+ [libgcc_cv_powerpc_3_1_float128_hw=yes],
+ [libgcc_cv_powerpc_3_1_float128_hw=no])])
+ CFLAGS="$saved_CFLAGS"
esac
# Collect host-machine-specific information.
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