diff --git a/csu/libc-start.c b/csu/libc-start.c
index c2dd159..84b7f99 100644
--- a/csu/libc-start.c
+++ b/csu/libc-start.c
@@ -188,12 +188,15 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
 
   ARCH_INIT_CPU_FEATURES ();
 
-  /* Perform IREL{,A} relocations.  */
-  apply_irel ();
-
   /* The stack guard goes into the TCB, so initialize it early.  */
   __libc_setup_tls ();
 
+  /* Perform IREL{,A} relocations.
+     Note: the relocations must happen after TLS initialization so that
+     IFUNC resolvers can benefit from thread-local storage, e.g. powerpc's
+     hwcap and platform fields available in the TCB.  */
+  apply_irel ();
+
   /* Set up the stack checker's canary.  */
   uintptr_t stack_chk_guard = _dl_setup_stack_chk_guard (_dl_random);
 # ifdef THREAD_SET_STACK_GUARD
@@ -224,7 +227,7 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
   __pointer_chk_guard_local = pointer_chk_guard;
 # endif
 
-#endif
+#endif /* !SHARED  */
 
   /* Register the destructor of the dynamic linker if there is any.  */
   if (__glibc_likely (rtld_fini != NULL))
diff --git a/csu/libc-tls.c b/csu/libc-tls.c
index 3c897bf..2947912 100644
--- a/csu/libc-tls.c
+++ b/csu/libc-tls.c
@@ -101,6 +101,8 @@ init_static_tls (size_t memsz, size_t align)
   GL(dl_tls_static_nelem) = GL(dl_tls_max_dtv_idx);
 }
 
+/* Note: IREL{,A} relocations happen after TLS setup.  __libc_setup_tls has
+   to guarantee that it won't use STT_GNU_IFUNC.  */
 void
 __libc_setup_tls (void)
 {
diff --git a/elf/Makefile b/elf/Makefile
index 201b328..b603e89 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -147,12 +147,13 @@ tests-static-normal := tst-leaks1-static tst-array1-static tst-array5-static \
 	       tst-tlsalign-static tst-tlsalign-extern-static \
 	       tst-linkall-static tst-env-setuid tst-env-setuid-tunables
 tests-static-internal := tst-tls1-static tst-tls2-static \
-	       tst-ptrguard1-static tst-stackguard1-static
+	       tst-ptrguard1-static tst-stackguard1-static \
+	       tst-tlsifunc-static
 
 tests := tst-tls9 tst-leaks1 \
 	tst-array1 tst-array2 tst-array3 tst-array4 tst-array5 \
 	tst-auxv
-tests-internal := tst-tls1 tst-tls2 $(tests-static-internal)
+tests-internal := tst-tls1 tst-tls2 tst-tlsifunc $(tests-static-internal)
 tests-static := $(tests-static-normal) $(tests-static-internal)
 
 ifeq (yes,$(build-shared))
diff --git a/elf/tst-tlsifunc-static.c b/elf/tst-tlsifunc-static.c
new file mode 100644
index 0000000..e5313af
--- /dev/null
+++ b/elf/tst-tlsifunc-static.c
@@ -0,0 +1,19 @@
+/* Test if an executable can read from the TLS from an STT_GNU_IFUNC resolver.
+   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/>.  */
+
+#include "tst-tlsifunc.c"
diff --git a/elf/tst-tlsifunc.c b/elf/tst-tlsifunc.c
new file mode 100644
index 0000000..531d20f
--- /dev/null
+++ b/elf/tst-tlsifunc.c
@@ -0,0 +1,66 @@
+/* Test if an executable can read from the TLS from an STT_GNU_IFUNC resolver.
+   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/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <libc-symbols.h>
+#include "tls-macros.h"
+
+__thread int bar;
+static int * bar_ptr = NULL;
+
+int foo (void);
+
+void
+init_foo (void)
+{
+  bar_ptr = TLS_GD (bar);
+}
+
+int
+my_foo (void)
+{
+  printf ("&bar = %p and bar_ptr = %p.\n", &bar, bar_ptr);
+  return bar_ptr != NULL;
+}
+
+__ifunc (foo, foo, my_foo, void, init_foo);
+
+static int
+do_test (void)
+{
+  int ret = 0;
+
+  if (foo ())
+    printf ("PASS: IFUNC resolver called once.\n");
+  else {
+    printf ("FAIL: IFUNC resolver not called once.\n");
+    ret = 1;
+  }
+
+  if (&bar == bar_ptr)
+    printf ("PASS: Address read from IFUNC resolver is correct.\n");
+  else {
+    printf ("FAIL: Address read from IFUNC resolver is incorrect.\n");
+    ret = 1;
+  }
+
+  return ret;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/powerpc/powerpc64le/Makefile b/sysdeps/powerpc/powerpc64le/Makefile
index bd8a82d..90a41b1 100644
--- a/sysdeps/powerpc/powerpc64le/Makefile
+++ b/sysdeps/powerpc/powerpc64le/Makefile
@@ -1,6 +1,11 @@
 # When building float128 we need to ensure -mfloat128 is
 # passed to all such object files.
 
+# libgcc requires __tcb_parse_hwcap_and_convert_at_platform when built with
+# a binary128 type.  That symbol is provided by the loader on dynamically
+# linked executables, forcing to link the loader after libgcc link.
+f128-loader-link = $(as-needed) $(elf-objpfx)ld.so $(no-as-needed)
+
 ifeq ($(subdir),math)
 # sqrtf128 requires emulation before POWER9.
 CPPFLAGS += -I../soft-fp
@@ -11,6 +16,8 @@ $(foreach suf,$(all-object-suffixes),%f128_r$(suf)): CFLAGS += -mfloat128
 $(objpfx)test-float128%.o $(objpfx)test-float128%.os: CFLAGS += -mfloat128
 $(objpfx)test-ifloat128%.o $(objpfx)test-ifloat128%.os: CFLAGS += -mfloat128
 CFLAGS-libm-test-support-float128.c += -mfloat128
+$(objpfx)test-float128% $(objpfx)test-ifloat128%: \
+  gnulib-tests += $(f128-loader-link)
 endif
 
 # Append flags to string <-> _Float128 routines.
@@ -24,6 +31,9 @@ CFLAGS-tst-strtod6.c += -mfloat128
 CFLAGS-tst-strfrom.c += -mfloat128
 CFLAGS-tst-strfrom-locale.c += -mfloat128
 CFLAGS-strfrom-skeleton.c += -mfloat128
+$(foreach test,bug-strtod bug-strtod2 bug-strtod2 tst-strtod-round \
+tst-wcstod-round tst-strtod6 tst-strrom tst-strfrom-locale \
+strfrom-skeleton,$(objpfx)$(test)): gnulib-tests += $(f128-loader-link)
 
 # When building glibc with support for _Float128, the powers of ten tables in
 # fpioconst.c and in the string conversion functions must be extended.
