Remove powerpc32 sqrt wrappers.

This patch removes the powerpc32-specific wrappers for sqrt and sqrtf.

These wrappers, by adding architecture-specific uses of _LIB_VERSION
and __kernel_standard, unnecessarily complicate cleanups of libm error
handling.  They also do not serve a useful optimization purpose.  GCC
knows about sqrt as a built-in function, and can generate direct calls
to a hardware square root instruction, either on its own, in the
-fno-math-errno case, or together with an inline check for the
argument being negative and a call to the out-of-line sqrt function
for error handling only in that case (and has been able to do so for a
long time).  Thus in practice the wrapper will only be called only in
the case of negative arguments, which is not a case it is useful to
optimize for.

Tested with build-many-glibcs.py for powerpc-linux-gnu-power4.

	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-power5.S:
	Remove file.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-ppc32.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-power5.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-ppc32.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
	(libm-sysdep-routines): Remove w_sqrt_compat-power5,
	w_sqrt_compat-ppc32, w_sqrtf_compat-power5 and
	w_sqrtf_compat-ppc32.

9 files changed, 0 insertions, 398 deletions

diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
index 5afbade15f..4e85021d50 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
@@ -9,8 +9,6 @@ sysdep_routines += s_isnan-power7 s_isnan-power6 s_isnan-power5 s_isnan-ppc32 \
 libm-sysdep_routines += s_llrintf-power6 s_llrintf-ppc32 s_llrint-power6 \
 			s_llrint-ppc32 s_llround-power6 s_llround-power5+ \
 			s_llround-ppc32 s_isnan-power7 \
-			w_sqrt_compat-power5 w_sqrt_compat-ppc32 \
-			w_sqrtf_compat-power5 w_sqrtf_compat-ppc32 \
 			s_isnan-power6 s_isnan-power5 s_isnan-ppc32 \
 			s_isnanf-power6 s_isnanf-power5 s_isinf-power7 \
 			s_isinf-ppc32 s_isinff-ppc32 s_finite-power7 \
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-power5.S b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-power5.S
deleted file mode 100644
index 7c5a504177..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-power5.S
+++ /dev/null
@@ -1,31 +0,0 @@
-/* sqrt function.  PowerPC32/POWER5 version.
-   Copyright (C) 2013-2017 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 <sysdep.h>
-#include <math_ldbl_opt.h>
-
-#undef weak_alias
-#define weak_alias(a,b)
-#undef strong_alias
-#define strong_alias(a,b)
-#undef compat_symbol
-#define compat_symbol(a,b,c,d)
-
-#define __sqrt __sqrt_power5
-
-#include <sysdeps/powerpc/powerpc32/power5/fpu/w_sqrt_compat.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-ppc32.S b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-ppc32.S
deleted file mode 100644
index 534e934ac9..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat-ppc32.S
+++ /dev/null
@@ -1,31 +0,0 @@
-/* sqrt function.  PowerPC32 default version.
-   Copyright (C) 2013-2017 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 <sysdep.h>
-#include <math_ldbl_opt.h>
-
-#undef weak_alias
-#define weak_alias(a,b)
-#undef strong_alias
-#define strong_alias(a,b)
-#undef compat_symbol
-#define compat_symbol(a,b,c,d)
-
-#define __sqrt __sqrt_ppc32
-
-#include <sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt_compat.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat.c
deleted file mode 100644
index 1e1892034e..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrt_compat.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Multiple versions of sqrt.
-   Copyright (C) 2013-2017 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 <math.h>
-#include <math_ldbl_opt.h>
-#include <shlib-compat.h>
-#include "init-arch.h"
-
-extern __typeof (__sqrt) __sqrt_ppc32 attribute_hidden;
-extern __typeof (__sqrt) __sqrt_power5 attribute_hidden;
-
-libc_ifunc (__sqrt,
-	    (hwcap & PPC_FEATURE_POWER5)
-	    ? __sqrt_power5
-	    : __sqrt_ppc32);
-
-weak_alias (__sqrt, sqrt)
-
-#ifdef NO_LONG_DOUBLE
-strong_alias (__sqrt, __sqrtl)
-weak_alias (__sqrt, sqrtl)
-#endif
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
-compat_symbol (libm, __sqrt, sqrtl, GLIBC_2_0);
-#endif
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-power5.S b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-power5.S
deleted file mode 100644
index eacc042850..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-power5.S
+++ /dev/null
@@ -1,26 +0,0 @@
-/* sqrtf function.  PowerPC32/POWER5 version.
-   Copyright (C) 2013-2017 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 <sysdep.h>
-
-#undef weak_alias
-#define weak_alias(a,b)
-
-#define __sqrtf __sqrtf_power5
-
-#include <sysdeps/powerpc/powerpc32/power5/fpu/w_sqrtf_compat.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-ppc32.S b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-ppc32.S
deleted file mode 100644
index 72191fc9a5..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat-ppc32.S
+++ /dev/null
@@ -1,26 +0,0 @@
-/* sqrtf function.  PowerPC32 default version.
-   Copyright (C) 2013-2017 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 <sysdep.h>
-
-#undef weak_alias
-#define weak_alias(a,b)
-
-#define __sqrtf __sqrtf_ppc32
-
-#include <sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf_compat.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat.c
deleted file mode 100644
index bbab4d4f93..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/w_sqrtf_compat.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Multiple versions of sqrtf.
-   Copyright (C) 2013-2017 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 <math.h>
-#include <math_ldbl_opt.h>
-#include <shlib-compat.h>
-#include "init-arch.h"
-
-extern __typeof (__sqrtf) __sqrtf_ppc32 attribute_hidden;
-extern __typeof (__sqrtf) __sqrtf_power5 attribute_hidden;
-
-libc_ifunc (__sqrtf,
-	    (hwcap & PPC_FEATURE_POWER5)
-	    ? __sqrtf_power5
-	    : __sqrtf_ppc32);
-
-weak_alias (__sqrtf, sqrtf)
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt_compat.S b/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt_compat.S
deleted file mode 100644
index 82e3baffd4..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt_compat.S
+++ /dev/null
@@ -1,109 +0,0 @@
-/* sqrt function.  PowerPC32 version.
-   Copyright (C) 2007-2017 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 <sysdep.h>
-#include <math_ldbl_opt.h>
-#include <math-svid-compat.h>
-
-/* double [fp1] sqrt (double x [fp1])
-   Power4 (ISA V2.0) and above implement sqrt in hardware (not optional).
-   The fsqrt instruction generates the correct value for all inputs and
-   sets the appropriate floating point exceptions.  Extended checking is
-   only needed to set errno (via __kernel_standard) if the input value
-   is negative.
-
-   The fsqrt will set FPCC and FU (Floating Point Unordered or NaN
-   to indicated that the input value was negative or NaN. Use Move to
-   Condition Register from FPSCR to copy the FPCC field to cr1.  The
-   branch on summary overflow transfers control to w_sqrt to process
-   any error conditions. Otherwise we can return the result directly.
-
-   This part of the function is a leaf routine,  so no need to stack a
-   frame or execute prologue/epilogue code. This means it is safe to
-   transfer directly to w_sqrt as long as the input value (f1) is
-   preserved. Putting the sqrt result into f2 (double parameter 2)
-   allows passing both the input value and sqrt result into the extended
-   wrapper so there is no need to recompute.
-
-   This tactic avoids the overhead of stacking a frame for the normal
-   (non-error) case.  Until gcc supports prologue shrink-wrapping
-   this is the best we can do.  */
-
-	.section	".text"
-	.machine power4
-EALIGN (__sqrt, 5, 0)
-	fsqrt	fp2,fp1
-	mcrfs	cr1,4
-	bso-	cr1,.Lw_sqrt
-	fmr	fp1,fp2
-	blr
-	.align	4
-.Lw_sqrt:
-	mflr	r0
-	stwu	r1,-16(r1)
-	cfi_adjust_cfa_offset(16)
-	fmr	fp12,fp2
-	stw	r0,20(r1)
-	stw	r30,8(r1)
-	cfi_offset(lr,20-16)
-	cfi_offset(r30,8-16)
-#ifdef SHARED
-	SETUP_GOT_ACCESS(r30,got_label)
-	addis	r30,r30,_GLOBAL_OFFSET_TABLE_-got_label@ha
-	addi	r30,r30,_GLOBAL_OFFSET_TABLE_-got_label@l
-	lwz	r9,_LIB_VERSION@got(30)
-	lwz	r0,0(r9)
-#else
-	lis	r9,_LIB_VERSION@ha
-	lwz	r0,_LIB_VERSION@l(r9)
-#endif
-/*  if (_LIB_VERSION == _IEEE_) return z; */
-	cmpwi	cr7,r0,-1
-	beq-	cr7,.L4
-/*  if (x != x) return z; !isnan*/
-	fcmpu	cr7,fp1,fp1
-	bne-	cr7,.L4
-/*  if  (x < 0.0)
-    return __kernel_standard (x, x, 26) */
-	fmr	fp2,fp1
-	fabs	fp0,fp1
-	li	r3,26
-	fcmpu	cr7,fp1,fp0
-	bne- 	cr7,.L11
-.L4:
-	lwz	r0,20(r1)
-	fmr	fp1,fp12
-	lwz	r30,8(r1)
-	addi	r1,r1,16
-	mtlr 	r0
-	blr
-.L11:
-	bl	__kernel_standard@plt
-	fmr	fp12,fp1
-	b	.L4
-	END	(__sqrt)
-
-weak_alias (__sqrt, sqrt)
-
-#ifdef NO_LONG_DOUBLE
-weak_alias (__sqrt, sqrtl)
-strong_alias (__sqrt, __sqrtl)
-#endif
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
-compat_symbol (libm, __sqrt, sqrtl, GLIBC_2_0)
-#endif
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf_compat.S b/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf_compat.S
deleted file mode 100644
index 0c663529e9..0000000000
--- a/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf_compat.S
+++ /dev/null
@@ -1,101 +0,0 @@
-/* sqrtf function.  PowerPC32 version.
-   Copyright (C) 2007-2017 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 <sysdep.h>
-#include <math_ldbl_opt.h>
-#include <math-svid-compat.h>
-
-/* float [fp1] sqrts (float x [fp1])
-   Power4 (ISA V2.0) and above implement sqrt in hardware (not optional).
-   The fsqrts instruction generates the correct value for all inputs and
-   sets the appropriate floating point exceptions.  Extended checking is
-   only needed to set errno (via __kernel_standard) if the input value
-   is negative.
-
-   The fsqrts will set FPCC and FU (Floating Point Unordered or NaN
-   to indicated that the input value was negative or NaN. Use Move to
-   Condition Register from FPSCR to copy the FPCC field to cr1.  The
-   branch on summary overflow transfers control to w_sqrt to process
-   any error conditions. Otherwise we can return the result directly.
-
-   This part of the function is a leaf routine,  so no need to stack a
-   frame or execute prologue/epilogue code. This means it is safe to
-   transfer directly to w_sqrt as long as the input value (f1) is
-   preserved. Putting the sqrt result into f2 (float parameter 2)
-   allows passing both the input value and sqrt result into the extended
-   wrapper so there is no need to recompute.
-
-   This tactic avoids the overhead of stacking a frame for the normal
-   (non-error) case.  Until gcc supports prologue shrink-wrapping
-   this is the best we can do.  */
-
-	.section	".text"
-	.machine power4
-EALIGN (__sqrtf, 5, 0)
-	fsqrts	fp2,fp1
-	mcrfs	cr1,4
-	bso-	cr1,.Lw_sqrtf
-	fmr	fp1,fp2
-	blr
-        .align 4
-.Lw_sqrtf:
-	mflr	r0
-	stwu	r1,-16(r1)
-	cfi_adjust_cfa_offset(16)
-	fmr	fp12,fp2
-	stw	r0,20(r1)
-	stw	r30,8(r1)
-	cfi_offset(lr,20-16)
-	cfi_offset(r30,8-16)
-#ifdef SHARED
-	SETUP_GOT_ACCESS(r30,got_label)
-	addis	r30,r30,_GLOBAL_OFFSET_TABLE_-got_label@ha
-	addi	r30,r30,_GLOBAL_OFFSET_TABLE_-got_label@l
-	lwz	r9,_LIB_VERSION@got(30)
-	lwz	r0,0(r9)
-#else
-	lis	r9,_LIB_VERSION@ha
-	lwz	r0,_LIB_VERSION@l(r9)
-#endif
-/*  if (_LIB_VERSION == _IEEE_) return z; */
-	cmpwi	cr7,r0,-1
-	beq-	cr7,.L4
-/*  if (x != x, 0) return z; !isnan */
-	fcmpu	cr7,fp1,fp1
-	bne-	cr7,.L4
-/*  if  (x < 0.0)
-    return __kernel_standard (x, x, 126) */
-	fmr	fp2,fp1
-	fabs	fp0,fp1
-	li	r3,126
-	fcmpu	cr7,1,0
-	bne- 	cr7,.L11
-.L4:
-	lwz	r0,20(r1)
-	fmr	fp1,fp12
-	lwz	r30,8(r1)
-	addi	r1,r1,16
-	mtlr 	r0
-	blr
-.L11:
-	bl	__kernel_standard@plt
-	fmr	fp12,fp1
-	b	.L4
-	END	(__sqrtf)
-
-weak_alias (__sqrtf, sqrtf)