diff --git a/sysdeps/generic/math-use-builtins-fabs.h b/sysdeps/generic/math-use-builtins-fabs.h
new file mode 100644
index 0000000000..ab9201c721
--- /dev/null
+++ b/sysdeps/generic/math-use-builtins-fabs.h
@@ -0,0 +1,3 @@
+/* Generic implementations already assume builtin support for
+   float, double, and _Float128.  */
+#define USE_FABSL_BUILTIN 0
diff --git a/sysdeps/generic/math-use-builtins.h b/sysdeps/generic/math-use-builtins.h
index 3ec15e59d4..6bd424d900 100644
--- a/sysdeps/generic/math-use-builtins.h
+++ b/sysdeps/generic/math-use-builtins.h
@@ -36,5 +36,6 @@
 #include <math-use-builtins-fma.h>
 #include <math-use-builtins-fmax.h>
 #include <math-use-builtins-fmin.h>
+#include <math-use-builtins-fabs.h>
 
 #endif /* MATH_USE_BUILTINS_H  */
diff --git a/sysdeps/i386/fpu/s_fabsl.S b/sysdeps/i386/fpu/s_fabsl.S
deleted file mode 100644
index 6642ed4151..0000000000
--- a/sysdeps/i386/fpu/s_fabsl.S
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <libm-alias-ldouble.h>
-#include <sysdep.h>
-
-	.text
-ENTRY(__fabsl)
-	fldt	4(%esp)
-	fabs
-	ret
-END(__fabsl)
-libm_alias_ldouble (__fabs, fabs)
diff --git a/sysdeps/ia64/fpu/s_fabsl.S b/sysdeps/ia64/fpu/s_fabsl.S
deleted file mode 100644
index 07838b1057..0000000000
--- a/sysdeps/ia64/fpu/s_fabsl.S
+++ /dev/null
@@ -1,82 +0,0 @@
-.file "fabsl.s"
-
-
-// Copyright (c) 2000 - 2003, Intel Corporation
-// All rights reserved.
-//
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//
-// * Redistributions in binary form must reproduce the above copyright
-// notice, this list of conditions and the following disclaimer in the
-// documentation and/or other materials provided with the distribution.
-//
-// * The name of Intel Corporation may not be used to endorse or promote
-// products derived from this software without specific prior written
-// permission.
-
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
-// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
-// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
-// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Intel Corporation is the author of this code, and requests that all
-// problem reports or change requests be submitted to it directly at
-// http://www.intel.com/software/products/opensource/libraries/num.htm.
-//
-// History
-//==============================================================
-// 02/02/00 Initial version
-// 02/07/02 Added __libm_fabsl entry point to test in case compiler inlines
-// 05/20/02 Cleaned up namespace and sf0 syntax
-// 02/10/03 Reordered header: .section, .global, .proc, .align
-//
-// API
-//==============================================================
-// long double fabsl  (long double x)
-//
-// Overview of operation
-//==============================================================
-// returns absolute value of x
-
-// floating-point registers used: 1
-// f8, input
-
-.section .text
-.global __libm_fabsl#
-
-.proc __libm_fabsl#
-__libm_fabsl:
-.endp __libm_fabsl#
-
-GLOBAL_IEEE754_ENTRY(fabsl)
-
-// set invalid or denormal flags and take fault if
-// necessary
-
-{ .mfi
-      nop.m 999
-      fcmp.eq.unc.s0 p6,p7 = f8,f1
-      nop.i 999 ;;
-}
-
-{ .mfb
-      nop.m 999
-      fmerge.s       f8 = f0,f8
-      br.ret.sptk    b0 ;;
-}
-
-GLOBAL_IEEE754_END(fabsl)
-libm_alias_ldouble_other (__fabs, fabs)
diff --git a/sysdeps/ieee754/ldbl-128/s_fabsl.c b/sysdeps/ieee754/ldbl-128/s_fabsl.c
index 7e08980252..d2603418c2 100644
--- a/sysdeps/ieee754/ldbl-128/s_fabsl.c
+++ b/sysdeps/ieee754/ldbl-128/s_fabsl.c
@@ -23,12 +23,11 @@ static char rcsid[] = "$NetBSD: $";
 #include <math.h>
 #include <math_private.h>
 #include <libm-alias-ldouble.h>
+#include <math-use-builtins.h>
 
-_Float128 __fabsl(_Float128 x)
+_Float128
+__fabsl (_Float128 x)
 {
-	uint64_t hx;
-	GET_LDOUBLE_MSW64(hx,x);
-	SET_LDOUBLE_MSW64(x,hx&0x7fffffffffffffffLL);
-        return x;
+  return __builtin_fabsf128 (x);
 }
 libm_alias_ldouble (__fabs, fabs)
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c b/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c
index cba7de6660..7f26315e84 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c
@@ -24,9 +24,13 @@ static char rcsid[] = "$NetBSD: $";
 #include <math.h>
 #include <math_private.h>
 #include <math_ldbl_opt.h>
+#include <math-use-builtins.h>
 
 long double __fabsl(long double x)
 {
+#if USE_FABSL_BUILTIN
+	return __builtin_fabsl (x);
+#else
 	uint64_t hx, lx;
 	double xhi, xlo;
 
@@ -39,5 +43,6 @@ long double __fabsl(long double x)
 	INSERT_WORDS64 (xlo, lx);
 	x = ldbl_pack (xhi, xlo);
 	return x;
+#endif
 }
 long_double_symbol (libm, __fabsl, fabsl);
diff --git a/sysdeps/x86_64/fpu/s_fabsl.S b/sysdeps/ieee754/ldbl-96/s_fabsl.c
similarity index 78%
rename from sysdeps/x86_64/fpu/s_fabsl.S
rename to sysdeps/ieee754/ldbl-96/s_fabsl.c
index cfcf01e027..0eceb0c997 100644
--- a/sysdeps/x86_64/fpu/s_fabsl.S
+++ b/sysdeps/ieee754/ldbl-96/s_fabsl.c
@@ -1,5 +1,5 @@
-/* Absolute value of floating point number.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+/* Absolute value of floating-point number.
+   Copyright (C) 2022 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
@@ -16,13 +16,13 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <sysdep.h>
+#include <math.h>
 #include <libm-alias-ldouble.h>
+#include <math-use-builtins.h>
 
-       .text
-ENTRY(__fabsl)
-       fldt    8(%rsp)
-       fabs
-       ret
-END(__fabsl)
+long double
+__fabsl (long double x)
+{
+  return __builtin_fabsl (x);
+}
 libm_alias_ldouble (__fabs, fabs)
diff --git a/sysdeps/powerpc/fpu/math-use-builtins-fabs.h b/sysdeps/powerpc/fpu/math-use-builtins-fabs.h
new file mode 100644
index 0000000000..8976d0b956
--- /dev/null
+++ b/sysdeps/powerpc/fpu/math-use-builtins-fabs.h
@@ -0,0 +1,8 @@
+/* Generic implementations already assume builtin support for
+   float, double, and _Float128 .  */
+
+/* We can't enable it for long double due GCC Bugzilla Bug 29253
+   "expand_abs wrong default code for floating point" where it can
+   cause spurious "invalid" exceptions from comparisons with NaN in
+   the code sequence generated.  */
+#define USE_FABSL_BUILTIN 0
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_fabsl.S b/sysdeps/powerpc/powerpc32/fpu/s_fabsl.S
deleted file mode 100644
index 8bdcdc8cfb..0000000000
--- a/sysdeps/powerpc/powerpc32/fpu/s_fabsl.S
+++ /dev/null
@@ -1,52 +0,0 @@
-/* Copy a sign bit between floating-point values.
-   IBM extended format long double version.
-   Copyright (C) 2004-2022 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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#include <math_ldbl_opt.h>
-
-ENTRY(__fabsl)
-/* long double [f1,f2] fabs (long double [f1,f2] x);
-   fabs(x,y) returns a value with the magnitude of x and
-   with the sign bit of y.  */
-#ifdef _ARCH_PPCGR
-	/* fsel available.  */
-	fmr	fp0,fp1
-#else
-	/* Use integer operations to test sign of high part to avoid
-	   exceptions on sNaNs.  */
-	stwu	r1,-16(r1)
-	cfi_adjust_cfa_offset (16)
-	stfd	fp1,8(r1)
-#endif
-	fabs	fp1,fp1
-#ifdef _ARCH_PPCGR
-	fneg	fp3,fp2
-	fsel	fp2,fp0,fp2,fp3
-#else
-	lwz	r3,8+HIWORD(r1)
-	cmpwi	cr6,r3,0
-	addi	r1,r1,16
-	cfi_adjust_cfa_offset (-16)
-	bgelr	cr6
-	fneg	fp2,fp2
-#endif
-	blr
-END (__fabsl)
-
-long_double_symbol (libm, __fabsl, fabsl)
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_fabsl.S b/sysdeps/powerpc/powerpc64/fpu/s_fabsl.S
deleted file mode 100644
index ec796a1cd3..0000000000
--- a/sysdeps/powerpc/powerpc64/fpu/s_fabsl.S
+++ /dev/null
@@ -1,34 +0,0 @@
-/* Copy a sign bit between floating-point values.
-   IBM extended format long double version.
-   Copyright (C) 2004-2022 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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#include <math_ldbl_opt.h>
-
-ENTRY_TOCLESS (__fabsl)
-/* long double [f1,f2] fabs (long double [f1,f2] x);
-   fabs(x,y) returns a value with the magnitude of x and
-   with the sign bit of y.  */
-	fmr	fp0,fp1
-	fabs	fp1,fp1
-	fneg	fp3,fp2
-	fsel	fp2,fp0,fp2,fp3
-	blr
-END (__fabsl)
-
-long_double_symbol (libm, __fabsl, fabsl)
diff --git a/sysdeps/sparc/sparc32/fpu/s_fabsl.c b/sysdeps/sparc/sparc32/fpu/s_fabsl.c
deleted file mode 100644
index 411a2e1511..0000000000
--- a/sysdeps/sparc/sparc32/fpu/s_fabsl.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <math.h>
-#include <math_ldbl_opt.h>
-#include <libm-alias-ldouble.h>
-
-long double __fabsl (long double x)
-{
-  return __builtin_fabsl (x);
-}
-libm_alias_ldouble (__fabs, fabs)
diff --git a/sysdeps/sparc/sparc64/fpu/s_fabsl.c b/sysdeps/sparc/sparc64/fpu/s_fabsl.c
deleted file mode 100644
index 72e1c51340..0000000000
--- a/sysdeps/sparc/sparc64/fpu/s_fabsl.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <libm-alias-ldouble.h>
-
-long double __fabsl (long double x)
-{
-  return __builtin_fabsl (x);
-}
-libm_alias_ldouble (__fabs, fabs)
