glibc: remove very old patch dir

6 files changed, 0 insertions, 651 deletions

diff --git a/toolchain/glibc/patches/2.26/0001-Do-not-use-__builtin_types_compatible_p-in-C-mode-bu.patch b/toolchain/glibc/patches/2.26/0001-Do-not-use-__builtin_types_compatible_p-in-C-mode-bu.patch
deleted file mode 100644
index 27a785e31..000000000
--- a/toolchain/glibc/patches/2.26/0001-Do-not-use-__builtin_types_compatible_p-in-C-mode-bu.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-From f7439f9b1089e17b6721f28e228682831a2f0135 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Mon, 21 Aug 2017 14:23:27 +0200
-Subject: [PATCH] Do not use __builtin_types_compatible_p in C++ mode (bug
- 21930)
-
-The logic to define isinf for float128 depends on the availability of
-__builtin_types_compatible_p, which is only available in C mode,
-however, the conditionals do not check for C or C++ mode.  This lead to
-an error in libstdc++ configure, as reported by bug 21930.
-
-This patch adds a conditional for C mode in the definition of isinf for
-float128.  No definition is provided in C++ mode, since libstdc++
-headers undefine isinf.
-
-Tested for powerpc64le (glibc test suite and libstdc++-v3 configure).
-
-	[BZ #21930]
-	* math/math.h (isinf): Check if in C or C++ mode before using
-	__builtin_types_compatible_p, since this is a C mode feature.
-
-(cherry picked from commit 47a67213a9f51c5f8816d240500b10db605d8b77)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h | 8 ++++++--
- 1 file changed, 6 insertions(+), 2 deletions(-)
-
-diff --git a/math/math.h b/math/math.h
-index e217080..dea8dbe 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -442,8 +442,12 @@ enum
- 
- /* Return nonzero value if X is positive or negative infinity.  */
- # if __HAVE_DISTINCT_FLOAT128 && !__GNUC_PREREQ (7,0) \
--     && !defined __SUPPORT_SNAN__
--   /* __builtin_isinf_sign is broken for float128 only before GCC 7.0.  */
-+     && !defined __SUPPORT_SNAN__ && !defined __cplusplus
-+   /* Since __builtin_isinf_sign is broken for float128 before GCC 7.0,
-+      use the helper function, __isinff128, with older compilers.  This is
-+      only provided for C mode, because in C++ mode, GCC has no support
-+      for __builtin_types_compatible_p (and when in C++ mode, this macro is
-+      not used anyway, because libstdc++ headers undefine it).  */
- #  define isinf(x) \
-     (__builtin_types_compatible_p (__typeof (x), _Float128) \
-      ? __isinff128 (x) : __builtin_isinf_sign (x))
--- 
-2.9.5
-
diff --git a/toolchain/glibc/patches/2.26/0002-Do-not-use-generic-selection-in-C-mode.patch b/toolchain/glibc/patches/2.26/0002-Do-not-use-generic-selection-in-C-mode.patch
deleted file mode 100644
index 7321eebd6..000000000
--- a/toolchain/glibc/patches/2.26/0002-Do-not-use-generic-selection-in-C-mode.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From bb21afc362a3ecba07ab386a0bc4385e75fbd4b5 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Mon, 14 Aug 2017 17:51:51 -0300
-Subject: [PATCH] Do not use generic selection in C++ mode
-
-The logic to protect the use of generic selection (_Generic) does not
-check for C or C++ mode, however, generic selection is a C-only
-feature.
-
-Tested for powerpc64le.
-
-	* misc/sys/cdefs.h (__HAVE_GENERIC_SELECTION): Define to 0, if
-	in C++ mode.
-
-(cherry picked from commit 6913ad65e00bb32417ad39c41d292b976171e27e)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- misc/sys/cdefs.h | 19 ++++++++++---------
- 1 file changed, 10 insertions(+), 9 deletions(-)
-
-diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
-index 06523bf..0c80821 100644
---- a/misc/sys/cdefs.h
-+++ b/misc/sys/cdefs.h
-@@ -464,17 +464,18 @@
- # define __glibc_macro_warning(msg)
- #endif
- 
--/* Support for generic selection (ISO C11) is available in GCC since
--   version 4.9.  Previous versions do not provide generic selection,
--   even though they might set __STDC_VERSION__ to 201112L, when in
--   -std=c11 mode.  Thus, we must check for !defined __GNUC__ when
--   testing __STDC_VERSION__ for generic selection support.
-+/* Generic selection (ISO C11) is a C-only feature, available in GCC
-+   since version 4.9.  Previous versions do not provide generic
-+   selection, even though they might set __STDC_VERSION__ to 201112L,
-+   when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
-+   when testing __STDC_VERSION__ for generic selection support.
-    On the other hand, Clang also defines __GNUC__, so a clang-specific
-    check is required to enable the use of generic selection.  */
--#if __GNUC_PREREQ (4, 9) \
--    || __glibc_clang_has_extension (c_generic_selections) \
--    || (!defined __GNUC__ && defined __STDC_VERSION__ \
--	&& __STDC_VERSION__ >= 201112L)
-+#if !defined __cplusplus \
-+    && (__GNUC_PREREQ (4, 9) \
-+	|| __glibc_clang_has_extension (c_generic_selections) \
-+	|| (!defined __GNUC__ && defined __STDC_VERSION__ \
-+	    && __STDC_VERSION__ >= 201112L))
- # define __HAVE_GENERIC_SELECTION 1
- #else
- # define __HAVE_GENERIC_SELECTION 0
--- 
-2.9.5
-
diff --git a/toolchain/glibc/patches/2.26/0003-Provide-a-C-version-of-issignaling-that-does-not-use.patch b/toolchain/glibc/patches/2.26/0003-Provide-a-C-version-of-issignaling-that-does-not-use.patch
deleted file mode 100644
index b9cd3df39..000000000
--- a/toolchain/glibc/patches/2.26/0003-Provide-a-C-version-of-issignaling-that-does-not-use.patch
+++ /dev/null
@@ -1,225 +0,0 @@
-From 9bcf391a21677c6d5fa1c2be71554ec181e24f39 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Mon, 14 Aug 2017 13:46:15 -0300
-Subject: [PATCH] Provide a C++ version of issignaling that does not use
- __MATH_TG
-
-The macro __MATH_TG contains the logic to select between long double and
-_Float128, when these types are ABI-distinct.  This logic relies on
-__builtin_types_compatible_p, which is not available in C++ mode.
-
-On the other hand, C++ function overloading provides the means to
-distinguish between the floating-point types.  The overloading
-resolution will match the correct parameter regardless of type
-qualifiers, i.e.: const and volatile.
-
-Tested for powerpc64le, s390x, and x86_64.
-
-	* math/math.h [defined __cplusplus] (issignaling): Provide a C++
-	definition for issignaling that does not rely on __MATH_TG,
-	since __MATH_TG uses __builtin_types_compatible_p, which is only
-	available in C mode.
-	(CFLAGS-test-math-issignaling.cc): New variable.
-	* math/Makefile [CXX] (tests): Add test-math-issignaling.
-	* math/test-math-issignaling.cc: New test for C++ implementation
-	of type-generic issignaling.
-	* sysdeps/powerpc/powerpc64le/Makefile [subdir == math]
-	(CXXFLAGS-test-math-issignaling.cc): Add -mfloat128 to the build
-	options of test-math-issignaling on powerpc64le.
-
-(cherry picked from commit a16e8bc08edca84d507715c66d6cddbbc7ed3b62)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/Makefile                        |   3 +-
- math/math.h                          |  19 +++++-
- math/test-math-issignaling.cc        | 113 +++++++++++++++++++++++++++++++++++
- sysdeps/powerpc/powerpc64le/Makefile |   1 +
- 4 files changed, 134 insertions(+), 2 deletions(-)
- create mode 100644 math/test-math-issignaling.cc
-
-diff --git a/math/Makefile b/math/Makefile
-index e09b0c0..0130fcf 100644
---- a/math/Makefile
-+++ b/math/Makefile
-@@ -203,7 +203,7 @@ tests-static = test-fpucw-static test-fpucw-ieee-static \
- 	       test-signgam-ullong-static test-signgam-ullong-init-static
- 
- ifneq (,$(CXX))
--tests += test-math-isinff test-math-iszero
-+tests += test-math-isinff test-math-iszero test-math-issignaling
- endif
- 
- ifneq (no,$(PERL))
-@@ -350,6 +350,7 @@ CFLAGS-test-signgam-ullong-init-static.c = -std=c99
- 
- CFLAGS-test-math-isinff.cc = -std=gnu++11
- CFLAGS-test-math-iszero.cc = -std=gnu++11
-+CFLAGS-test-math-issignaling.cc = -std=gnu++11
- 
- CFLAGS-test-iszero-excess-precision.c = -fexcess-precision=standard
- CFLAGS-test-iseqsig-excess-precision.c = -fexcess-precision=standard
-diff --git a/math/math.h b/math/math.h
-index dea8dbe..add86af 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -474,7 +474,24 @@ enum
- # include <bits/iscanonical.h>
- 
- /* Return nonzero value if X is a signaling NaN.  */
--# define issignaling(x) __MATH_TG ((x), __issignaling, (x))
-+# ifndef __cplusplus
-+#  define issignaling(x) __MATH_TG ((x), __issignaling, (x))
-+# else
-+   /* In C++ mode, __MATH_TG cannot be used, because it relies on
-+      __builtin_types_compatible_p, which is a C-only builtin.  On the
-+      other hand, overloading provides the means to distinguish between
-+      the floating-point types.  The overloading resolution will match
-+      the correct parameter (regardless of type qualifiers (i.e.: const
-+      and volatile).  */
-+extern "C++" {
-+inline int issignaling (float __val) { return __issignalingf (__val); }
-+inline int issignaling (double __val) { return __issignaling (__val); }
-+inline int issignaling (long double __val) { return __issignalingl (__val); }
-+#  if __HAVE_DISTINCT_FLOAT128
-+inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
-+#  endif
-+} /* extern C++ */
-+# endif
- 
- /* Return nonzero value if X is subnormal.  */
- # define issubnormal(x) (fpclassify (x) == FP_SUBNORMAL)
-diff --git a/math/test-math-issignaling.cc b/math/test-math-issignaling.cc
-new file mode 100644
-index 0000000..22ae9e1
---- /dev/null
-+++ b/math/test-math-issignaling.cc
-@@ -0,0 +1,113 @@
-+/* Test for the C++ implementation of issignaling.
-+   Copyright (C) 2017 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+
-+   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.
-+
-+   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/>.  */
-+
-+#define _GNU_SOURCE 1
-+#include <math.h>
-+#include <stdio.h>
-+
-+#include <limits>
-+
-+/* There is no signaling_NaN for _Float128 in std::numeric_limits.
-+   Include ieee754_float128.h and use the bitfields in the union
-+   ieee854_float128.ieee_nan to build a signaling NaN.  */
-+#if __HAVE_DISTINCT_FLOAT128
-+# include <ieee754_float128.h>
-+#endif
-+
-+static bool errors;
-+
-+static void
-+check (int actual, int expected, const char *actual_expr, int line)
-+{
-+  if (actual != expected)
-+    {
-+      errors = true;
-+      printf ("%s:%d: error: %s\n", __FILE__, line, actual_expr);
-+      printf ("%s:%d:   expected: %d\n", __FILE__, line, expected);
-+      printf ("%s:%d:   actual: %d\n", __FILE__, line, actual);
-+    }
-+}
-+
-+#define CHECK(actual, expected) \
-+  check ((actual), (expected), #actual, __LINE__)
-+
-+template <class T>
-+static void
-+check_type ()
-+{
-+  typedef std::numeric_limits<T> limits;
-+  CHECK (issignaling (T{0}), 0);
-+  if (limits::has_infinity)
-+    {
-+      CHECK (issignaling (limits::infinity ()), 0);
-+      CHECK (issignaling (-limits::infinity ()), 0);
-+    }
-+  if (limits::has_quiet_NaN)
-+    CHECK (issignaling (limits::quiet_NaN ()), 0);
-+  if (limits::has_signaling_NaN)
-+    CHECK (issignaling (limits::signaling_NaN ()), 1);
-+}
-+
-+#if __HAVE_DISTINCT_FLOAT128
-+static void
-+check_float128 ()
-+{
-+  ieee854_float128 q;
-+
-+  q.d = 0;
-+  CHECK (issignaling (q.d), 0);
-+
-+  /* Infinity.  */
-+  q.ieee.negative = 0;
-+  q.ieee.exponent = 0x7FFF;
-+  q.ieee.mantissa0 = 0x0000;
-+  q.ieee.mantissa1 = 0x00000000;
-+  q.ieee.mantissa2 = 0x00000000;
-+  q.ieee.mantissa3 = 0x00000000;
-+  CHECK (issignaling (q.d), 0);
-+
-+  /* Quiet NaN.  */
-+  q.ieee_nan.quiet_nan = 1;
-+  q.ieee_nan.mantissa0 = 0x0000;
-+  CHECK (issignaling (q.d), 0);
-+
-+  /* Still a quiet NaN.  */
-+  q.ieee_nan.quiet_nan = 1;
-+  q.ieee_nan.mantissa0 = 0x4000;
-+  CHECK (issignaling (q.d), 0);
-+
-+  /* Signaling NaN.  */
-+  q.ieee_nan.quiet_nan = 0;
-+  q.ieee_nan.mantissa0 = 0x4000;
-+  CHECK (issignaling (q.d), 1);
-+}
-+#endif
-+
-+static int
-+do_test (void)
-+{
-+  check_type<float> ();
-+  check_type<double> ();
-+  check_type<long double> ();
-+#if __HAVE_DISTINCT_FLOAT128
-+  check_float128 ();
-+#endif
-+  return errors;
-+}
-+
-+#include <support/test-driver.c>
-diff --git a/sysdeps/powerpc/powerpc64le/Makefile b/sysdeps/powerpc/powerpc64le/Makefile
-index 77617b6..19adbfa 100644
---- a/sysdeps/powerpc/powerpc64le/Makefile
-+++ b/sysdeps/powerpc/powerpc64le/Makefile
-@@ -16,6 +16,7 @@ $(foreach suf,$(all-object-suffixes),%f128_r$(suf)): CFLAGS += -mfloat128
- $(foreach suf,$(all-object-suffixes),$(objpfx)test-float128%$(suf)): CFLAGS += -mfloat128
- $(foreach suf,$(all-object-suffixes),$(objpfx)test-ifloat128%$(suf)): CFLAGS += -mfloat128
- CFLAGS-libm-test-support-float128.c += -mfloat128
-+CFLAGS-test-math-issignaling.cc += -mfloat128
- $(objpfx)test-float128% $(objpfx)test-ifloat128%: \
-   gnulib-tests += $(f128-loader-link)
- endif
--- 
-2.9.5
-
diff --git a/toolchain/glibc/patches/2.26/0004-Fix-the-C-version-of-issignaling-when-__NO_LONG_DOUB.patch b/toolchain/glibc/patches/2.26/0004-Fix-the-C-version-of-issignaling-when-__NO_LONG_DOUB.patch
deleted file mode 100644
index 5e32f754d..000000000
--- a/toolchain/glibc/patches/2.26/0004-Fix-the-C-version-of-issignaling-when-__NO_LONG_DOUB.patch
+++ /dev/null
@@ -1,47 +0,0 @@
-From 9dbd8386a1b706beb30291a7e76bbfe69c2620cf Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Wed, 23 Aug 2017 10:16:54 -0300
-Subject: [PATCH] Fix the C++ version of issignaling when __NO_LONG_DOUBLE_MATH
- is defined
-
-When __NO_LONG_DOUBLE_MATH is defined, __issignalingl is not available,
-thus issignaling with long double argument should call __issignaling,
-instead.
-
-Tested for powerpc64le.
-
-	* math/math.h [defined __cplusplus] (issignaling): In the long
-	double case, call __issignalingl only if __NO_LONG_DOUBLE_MATH
-	is not defined.  Call __issignaling, otherwise.
-
-(cherry picked from commit 3d7b66f66cb223e899a7ebc0f4c20f13e711c9e0)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h | 10 +++++++++-
- 1 file changed, 9 insertions(+), 1 deletion(-)
-
-diff --git a/math/math.h b/math/math.h
-index add86af..60dfa31 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -486,7 +486,15 @@ enum
- extern "C++" {
- inline int issignaling (float __val) { return __issignalingf (__val); }
- inline int issignaling (double __val) { return __issignaling (__val); }
--inline int issignaling (long double __val) { return __issignalingl (__val); }
-+inline int
-+issignaling (long double __val)
-+{
-+#  ifdef __NO_LONG_DOUBLE_MATH
-+  return __issignaling (__val);
-+#  else
-+  return __issignalingl (__val);
-+#  endif
-+}
- #  if __HAVE_DISTINCT_FLOAT128
- inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
- #  endif
--- 
-2.9.5
-
diff --git a/toolchain/glibc/patches/2.26/0005-Provide-a-C-version-of-iszero-that-does-not-use-__MA.patch b/toolchain/glibc/patches/2.26/0005-Provide-a-C-version-of-iszero-that-does-not-use-__MA.patch
deleted file mode 100644
index e12c8438f..000000000
--- a/toolchain/glibc/patches/2.26/0005-Provide-a-C-version-of-iszero-that-does-not-use-__MA.patch
+++ /dev/null
@@ -1,210 +0,0 @@
-From 45970aa26d1af87b016ef95b4b35c566aeb6e841 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Tue, 22 Aug 2017 16:34:42 -0300
-Subject: [PATCH] Provide a C++ version of iszero that does not use __MATH_TG
- (bug 21930)
-
-When signaling nans are enabled (with -fsignaling-nans), the C++ version
-of iszero uses the fpclassify macro, which is defined with __MATH_TG.
-However, when support for float128 is available, __MATH_TG uses the
-builtin __builtin_types_compatible_p, which is only available in C mode.
-
-This patch refactors the C++ version of iszero so that it uses function
-overloading to select between the floating-point types, instead of
-relying on fpclassify and __MATH_TG.
-
-Tested for powerpc64le, s390x, x86_64, and with build-many-glibcs.py.
-
-	[BZ #21930]
-	* math/math.h [defined __cplusplus && defined __SUPPORT_SNAN__]
-	(iszero): New C++ implementation that does not use
-	fpclassify/__MATH_TG/__builtin_types_compatible_p, when
-	signaling nans are enabled, since __builtin_types_compatible_p
-	is a C-only feature.
-	* math/test-math-iszero.cc: When __HAVE_DISTINCT_FLOAT128 is
-	defined, include ieee754_float128.h for access to the union and
-	member ieee854_float128.ieee.
-	[__HAVE_DISTINCT_FLOAT128] (do_test): Call check_float128.
-	[__HAVE_DISTINCT_FLOAT128] (check_float128): New function.
-	* sysdeps/powerpc/powerpc64le/Makefile [subdir == math]
-	(CXXFLAGS-test-math-iszero.cc): Add -mfloat128 to the build
-	options of test-math-zero on powerpc64le.
-
-(cherry picked from commit 42496114ec0eb7d6d039d05d4262e109951c600c)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h                          | 33 +++++++++++++--
- math/test-math-iszero.cc             | 79 ++++++++++++++++++++++++++++++++++++
- sysdeps/powerpc/powerpc64le/Makefile |  3 +-
- 3 files changed, 110 insertions(+), 5 deletions(-)
-
-diff --git a/math/math.h b/math/math.h
-index 60dfa31..7c0fc6d 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -513,15 +513,40 @@ inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
- #  endif
- # else	/* __cplusplus */
- extern "C++" {
-+#  ifdef __SUPPORT_SNAN__
-+inline int
-+iszero (float __val)
-+{
-+  return __fpclassifyf (__val) == FP_ZERO;
-+}
-+inline int
-+iszero (double __val)
-+{
-+  return __fpclassify (__val) == FP_ZERO;
-+}
-+inline int
-+iszero (long double __val)
-+{
-+#   ifdef __NO_LONG_DOUBLE_MATH
-+  return __fpclassify (__val) == FP_ZERO;
-+#   else
-+  return __fpclassifyl (__val) == FP_ZERO;
-+#   endif
-+}
-+#   if __HAVE_DISTINCT_FLOAT128
-+inline int
-+iszero (_Float128 __val)
-+{
-+  return __fpclassifyf128 (__val) == FP_ZERO;
-+}
-+#   endif
-+#  else
- template <class __T> inline bool
- iszero (__T __val)
- {
--#  ifdef __SUPPORT_SNAN__
--  return fpclassify (__val) == FP_ZERO;
--#  else
-   return __val == 0;
--#  endif
- }
-+#  endif
- } /* extern C++ */
- # endif	/* __cplusplus */
- #endif /* Use IEC_60559_BFP_EXT.  */
-diff --git a/math/test-math-iszero.cc b/math/test-math-iszero.cc
-index 027e972..5c07261 100644
---- a/math/test-math-iszero.cc
-+++ b/math/test-math-iszero.cc
-@@ -22,6 +22,13 @@
- 
- #include <limits>
- 
-+/* Support for _Float128 in std::numeric_limits is limited.
-+   Include ieee754_float128.h and use the bitfields in the union
-+   ieee854_float128.ieee_nan to build corner-case inputs.  */
-+#if __HAVE_DISTINCT_FLOAT128
-+# include <ieee754_float128.h>
-+#endif
-+
- static bool errors;
- 
- static void
-@@ -72,12 +79,84 @@ check_type ()
-          std::numeric_limits<T>::has_denorm == std::denorm_absent);
- }
- 
-+#if __HAVE_DISTINCT_FLOAT128
-+static void
-+check_float128 ()
-+{
-+  ieee854_float128 q;
-+
-+  q.d = 0.0Q;
-+  CHECK (iszero (q.d), 1);
-+  q.d = -0.0Q;
-+  CHECK (iszero (q.d), 1);
-+  q.d = 1.0Q;
-+  CHECK (iszero (q.d), 0);
-+  q.d = -1.0Q;
-+  CHECK (iszero (q.d), 0);
-+
-+  /* Normal min.  */
-+  q.ieee.negative = 0;
-+  q.ieee.exponent = 0x0001;
-+  q.ieee.mantissa0 = 0x0000;
-+  q.ieee.mantissa1 = 0x00000000;
-+  q.ieee.mantissa2 = 0x00000000;
-+  q.ieee.mantissa3 = 0x00000000;
-+  CHECK (iszero (q.d), 0);
-+  q.ieee.negative = 1;
-+  CHECK (iszero (q.d), 0);
-+
-+  /* Normal max.  */
-+  q.ieee.negative = 0;
-+  q.ieee.exponent = 0x7FFE;
-+  q.ieee.mantissa0 = 0xFFFF;
-+  q.ieee.mantissa1 = 0xFFFFFFFF;
-+  q.ieee.mantissa2 = 0xFFFFFFFF;
-+  q.ieee.mantissa3 = 0xFFFFFFFF;
-+  CHECK (iszero (q.d), 0);
-+  q.ieee.negative = 1;
-+  CHECK (iszero (q.d), 0);
-+
-+  /* Infinity.  */
-+  q.ieee.negative = 0;
-+  q.ieee.exponent = 0x7FFF;
-+  q.ieee.mantissa0 = 0x0000;
-+  q.ieee.mantissa1 = 0x00000000;
-+  q.ieee.mantissa2 = 0x00000000;
-+  q.ieee.mantissa3 = 0x00000000;
-+  CHECK (iszero (q.d), 0);
-+
-+  /* Quiet NaN.  */
-+  q.ieee_nan.quiet_nan = 1;
-+  q.ieee_nan.mantissa0 = 0x0000;
-+  CHECK (iszero (q.d), 0);
-+
-+  /* Signaling NaN.  */
-+  q.ieee_nan.quiet_nan = 0;
-+  q.ieee_nan.mantissa0 = 0x4000;
-+  CHECK (iszero (q.d), 0);
-+
-+  /* Denormal min.  */
-+  q.ieee.negative = 0;
-+  q.ieee.exponent = 0x0000;
-+  q.ieee.mantissa0 = 0x0000;
-+  q.ieee.mantissa1 = 0x00000000;
-+  q.ieee.mantissa2 = 0x00000000;
-+  q.ieee.mantissa3 = 0x00000001;
-+  CHECK (iszero (q.d), 0);
-+  q.ieee.negative = 1;
-+  CHECK (iszero (q.d), 0);
-+}
-+#endif
-+
- static int
- do_test (void)
- {
-   check_type<float> ();
-   check_type<double> ();
-   check_type<long double> ();
-+#if __HAVE_DISTINCT_FLOAT128
-+  check_float128 ();
-+#endif
-   return errors;
- }
- 
-diff --git a/sysdeps/powerpc/powerpc64le/Makefile b/sysdeps/powerpc/powerpc64le/Makefile
-index 19adbfa..dea2290 100644
---- a/sysdeps/powerpc/powerpc64le/Makefile
-+++ b/sysdeps/powerpc/powerpc64le/Makefile
-@@ -17,7 +17,8 @@ $(foreach suf,$(all-object-suffixes),$(objpfx)test-float128%$(suf)): CFLAGS += -
- $(foreach suf,$(all-object-suffixes),$(objpfx)test-ifloat128%$(suf)): CFLAGS += -mfloat128
- CFLAGS-libm-test-support-float128.c += -mfloat128
- CFLAGS-test-math-issignaling.cc += -mfloat128
--$(objpfx)test-float128% $(objpfx)test-ifloat128%: \
-+CFLAGS-test-math-iszero.cc += -mfloat128
-+$(objpfx)test-float128% $(objpfx)test-ifloat128% $(objpfx)test-math-iszero: \
-   gnulib-tests += $(f128-loader-link)
- endif
- 
--- 
-2.9.5
-
diff --git a/toolchain/glibc/patches/2.26/0006-Let-fpclassify-use-the-builtin-when-optimizing-for-s.patch b/toolchain/glibc/patches/2.26/0006-Let-fpclassify-use-the-builtin-when-optimizing-for-s.patch
deleted file mode 100644
index 37807c459..000000000
--- a/toolchain/glibc/patches/2.26/0006-Let-fpclassify-use-the-builtin-when-optimizing-for-s.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From 33f54cf4f81a51e5c8cbfb2408edd439bdee9435 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gabriel@inconstante.eti.br>
-Date: Wed, 20 Sep 2017 15:10:26 -0300
-Subject: [PATCH] Let fpclassify use the builtin when optimizing for size in
- C++ mode (bug 22146)
-
-When optimization for size is on (-Os), fpclassify does not use the
-type-generic __builtin_fpclassify builtin, instead it uses __MATH_TG.
-However, when library support for float128 is available, __MATH_TG uses
-__builtin_types_compatible_p, which is not available in C++ mode.
-
-On the other hand, libstdc++ undefines (in cmath) many macros from
-math.h, including fpclassify, so that it can provide its own functions.
-However, during its configure tests, libstdc++ just tests for the
-availability of the macros (it does not undefine them, nor does it
-provide its own functions).
-
-Finally, when libstdc++ is configured with optimization for size
-enabled, its configure tests include math.h and get the definition of
-fpclassify that uses __MATH_TG (and __builtin_types_compatible_p).
-Since libstdc++ does not undefine the macros during its configure tests,
-they fail.
-
-This patch lets fpclassify use the builtin in C++ mode, even when
-optimization for size is on.  This allows the configure test in
-libstdc++ to work.
-
-Tested for powerpc64le and x86_64.
-
-	[BZ #22146]
-	math/math.h: Let fpclassify use the builtin in C++ mode, even
-	when optimazing for size.
-
-(cherry picked from commit c5c4a626098ec884b8527356abdf2a4bb7b6bf27)
-
-[Romain rebase on glibc 2.26)
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h | 8 +++++++-
- 1 file changed, 7 insertions(+), 1 deletion(-)
-
-diff --git a/math/math.h b/math/math.h
-index 7c0fc6d..f9348ec 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -402,7 +402,13 @@ enum
- 
- /* Return number of classification appropriate for X.  */
- # if __GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__			      \
--     && !defined __OPTIMIZE_SIZE__
-+     && (!defined __OPTIMIZE_SIZE__ || defined __cplusplus)
-+     /* The check for __cplusplus allows the use of the builtin, even
-+	when optimization for size is on.  This is provided for
-+	libstdc++, only to let its configure test work when it is built
-+	with -Os.  No further use of this definition of fpclassify is
-+	expected in C++ mode, since libstdc++ provides its own version
-+	of fpclassify in cmath (which undefines fpclassify).  */
- #  define fpclassify(x) __builtin_fpclassify (FP_NAN, FP_INFINITE,	      \
-      FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x)
- # else
--- 
-2.9.5
-