powerpc: Remove f{max,min}{f} assembly implementations

This patch removes the powerpc assembly implementation of fmax/fmin.
Based on benchtests, the assembly ones shows:

$ ./testrun.sh benchtests/bench-fmax
  "fmax": {
   "": {
    "duration": 5.07586e+09,
    "iterations": 2.01676e+09,
    "max": 1350.39,
    "min": 2.073,
    "mean": 2.51684
   },
   "qNaN": {
    "duration": 5.09315e+09,
    "iterations": 8.4568e+08,
    "max": 2788,
    "min": 5.806,
    "mean": 6.02255
   },
   "sNaN": {
    "duration": 5.09073e+09,
    "iterations": 8.42316e+08,
    "max": 4215.84,
    "min": 5.737,
    "mean": 6.04373
   }

And

$ ./testrun.sh benchtests/bench-fmin
  "fmin": {
   "": {
    "duration": 5.07711e+09,
    "iterations": 2.02982e+09,
    "max": 497.094,
    "min": 2.073,
    "mean": 2.50126
   },
   "qNaN": {
    "duration": 5.09134e+09,
    "iterations": 8.46968e+08,
    "max": 2255.14,
    "min": 5.807,
    "mean": 6.01125
   },
   "sNaN": {
    "duration": 5.09122e+09,
    "iterations": 8.4746e+08,
    "max": 1969.38,
    "min": 5.729,
    "mean": 6.00763
   }
  }

The default implementation (math/s_f{max.min}_template.c) shows slight better
latency for all cases:

$ ./testrun.sh benchtests/bench-fmax
  "fmax": {
   "": {
    "duration": 5.07044e+09,
    "iterations": 2.38695e+09,
    "max": 2048.58,
    "min": 2.073,
    "mean": 2.12423
   },
   "qNaN": {
    "duration": 5.09004e+09,
    "iterations": 9.45428e+08,
    "max": 3306.93,
    "min": 5.138,
    "mean": 5.38385
   },
   "sNaN": {
    "duration": 5.08458e+09,
    "iterations": 1.15959e+09,
    "max": 972.008,
    "min": 3.321,
    "mean": 4.3848
   }
  }

And:

$ ./testrun.sh benchtests/bench-fmin
  "fmin": {
   "": {
    "duration": 5.06817e+09,
    "iterations": 2.3913e+09,
    "max": 1177.9,
    "min": 2.073,
    "mean": 2.11942
   },
   "qNaN": {
    "duration": 5.08857e+09,
    "iterations": 9.45656e+08,
    "max": 2658.83,
    "min": 5.09,
    "mean": 5.38099
   },
   "sNaN": {
    "duration": 5.08093e+09,
    "iterations": 1.16725e+09,
    "max": 1030.74,
    "min": 3.323,
    "mean": 4.3529
   }
  }

Both were run with GCC 5.4 (ubuntu 16 default installation) using default
compiler flags on POWER8E 3.4GHz (powerpc64le-linux-gnu).

9 files changed, 11 insertions, 176 deletions

diff --git a/ChangeLog b/ChangeLog
index 5252a64edc..9791f66c6c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2016-12-27  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	* sysdeps/powerpc/fpu/s_fmaxf.S: Remove file.
+	* sysdeps/powerpc/fpu/s_fminf.S: Likewise.
+	* sysdeps/powerpc/fpu/s_fmax.S: Likewise.
+	* sysdeps/powerpc/fpu/s_fmin.S: Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_fmax.S: Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_fmin.S: Likewise.
+	* sysdeps/powerpc/powerpc64/fpu/s_fmax.S: Likewise.
+	* sysdeps/powerpc/powerpc64/fpu/s_fmin.S: Likewise.
+
 2016-12-27  Gabriel F. T. Gomes  <gftg@linux.vnet.ibm.com>
 
 	* manual/arith.texi (FP Comparison Functions): Fix typo in iseqsig.
diff --git a/sysdeps/powerpc/fpu/s_fmax.S b/sysdeps/powerpc/fpu/s_fmax.S
deleted file mode 100644
index e6405c02dd..0000000000
--- a/sysdeps/powerpc/fpu/s_fmax.S
+++ /dev/null
@@ -1,77 +0,0 @@
-/* Floating-point maximum.  PowerPC version.
-   Copyright (C) 1997-2016 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>
-
-ENTRY(__fmax)
-/* double [f1] fmax (double [f1] x, double [f2] y); */
-	fcmpu	cr0,fp1,fp2
-	blt	cr0,0f		/* if x < y, neither x nor y can be NaN... */
-	bnulr+	cr0
-/* x and y are unordered, so one of x or y must be a NaN... */
-	fcmpu	cr1,fp2,fp2
-	bun	cr1,1f
-/* x is a NaN; y is not.  Test if x is signaling.  */
-#ifdef __powerpc64__
-	stfd	fp1,-8(r1)
-	lwz	r3,-8+HIWORD(r1)
-#else
-	stwu	r1,-16(r1)
-	cfi_adjust_cfa_offset (16)
-	stfd	fp1,8(r1)
-	lwz	r3,8+HIWORD(r1)
-	addi	r1,r1,16
-	cfi_adjust_cfa_offset (-16)
-#endif
-	andis.	r3,r3,8
-	bne	cr0,0f
-	b	2f
-1:	/* y is a NaN; x may or may not be.  */
-	fcmpu	cr1,fp1,fp1
-	bun	cr1,2f
-/* y is a NaN; x is not.  Test if y is signaling.  */
-#ifdef __powerpc64__
-	stfd	fp2,-8(r1)
-	lwz	r3,-8+HIWORD(r1)
-#else
-	stwu	r1,-16(r1)
-	cfi_adjust_cfa_offset (16)
-	stfd	fp2,8(r1)
-	lwz	r3,8+HIWORD(r1)
-	addi	r1,r1,16
-	cfi_adjust_cfa_offset (-16)
-#endif
-	andis.	r3,r3,8
-	bnelr	cr0
-2:	/* x and y are NaNs, or one is a signaling NaN.  */
-	fadd	fp1,fp1,fp2
-	blr
-0:	fmr	fp1,fp2
-	blr
-END(__fmax)
-
-weak_alias (__fmax,fmax)
-
-/* It turns out that it's safe to use this code even for single-precision.  */
-strong_alias(__fmax,__fmaxf)
-weak_alias (__fmax,fmaxf)
-
-#ifdef NO_LONG_DOUBLE
-weak_alias (__fmax,__fmaxl)
-weak_alias (__fmax,fmaxl)
-#endif
diff --git a/sysdeps/powerpc/fpu/s_fmaxf.S b/sysdeps/powerpc/fpu/s_fmaxf.S
deleted file mode 100644
index 3c2d62bb81..0000000000
--- a/sysdeps/powerpc/fpu/s_fmaxf.S
+++ /dev/null
@@ -1 +0,0 @@
-/* __fmaxf is in s_fmax.c  */
diff --git a/sysdeps/powerpc/fpu/s_fmin.S b/sysdeps/powerpc/fpu/s_fmin.S
deleted file mode 100644
index 9ae77feb36..0000000000
--- a/sysdeps/powerpc/fpu/s_fmin.S
+++ /dev/null
@@ -1,77 +0,0 @@
-/* Floating-point minimum.  PowerPC version.
-   Copyright (C) 1997-2016 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>
-
-ENTRY(__fmin)
-/* double [f1] fmin (double [f1] x, double [f2] y); */
-	fcmpu	cr0,fp1,fp2
-	bgt	cr0,0f		/* if x > y, neither x nor y can be NaN... */
-	bnulr+	cr0
-/* x and y are unordered, so one of x or y must be a NaN... */
-	fcmpu	cr1,fp2,fp2
-	bun	cr1,1f
-/* x is a NaN; y is not.  Test if x is signaling.  */
-#ifdef __powerpc64__
-	stfd	fp1,-8(r1)
-	lwz	r3,-8+HIWORD(r1)
-#else
-	stwu	r1,-16(r1)
-	cfi_adjust_cfa_offset (16)
-	stfd	fp1,8(r1)
-	lwz	r3,8+HIWORD(r1)
-	addi	r1,r1,16
-	cfi_adjust_cfa_offset (-16)
-#endif
-	andis.	r3,r3,8
-	bne	cr0,0f
-	b	2f
-1:	/* y is a NaN; x may or may not be.  */
-	fcmpu	cr1,fp1,fp1
-	bun	cr1,2f
-/* y is a NaN; x is not.  Test if y is signaling.  */
-#ifdef __powerpc64__
-	stfd	fp2,-8(r1)
-	lwz	r3,-8+HIWORD(r1)
-#else
-	stwu	r1,-16(r1)
-	cfi_adjust_cfa_offset (16)
-	stfd	fp2,8(r1)
-	lwz	r3,8+HIWORD(r1)
-	addi	r1,r1,16
-	cfi_adjust_cfa_offset (-16)
-#endif
-	andis.	r3,r3,8
-	bnelr	cr0
-2:	/* x and y are NaNs, or one is a signaling NaN.  */
-	fadd	fp1,fp1,fp2
-	blr
-0:	fmr	fp1,fp2
-	blr
-END(__fmin)
-
-weak_alias (__fmin,fmin)
-
-/* It turns out that it's safe to use this code even for single-precision.  */
-strong_alias(__fmin,__fminf)
-weak_alias (__fmin,fminf)
-
-#ifdef NO_LONG_DOUBLE
-weak_alias (__fmin,__fminl)
-weak_alias (__fmin,fminl)
-#endif
diff --git a/sysdeps/powerpc/fpu/s_fminf.S b/sysdeps/powerpc/fpu/s_fminf.S
deleted file mode 100644
index 10ab7fe53c..0000000000
--- a/sysdeps/powerpc/fpu/s_fminf.S
+++ /dev/null
@@ -1 +0,0 @@
-/* __fminf is in s_fmin.c  */
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_fmax.S b/sysdeps/powerpc/powerpc32/fpu/s_fmax.S
deleted file mode 100644
index 69735761ab..0000000000
--- a/sysdeps/powerpc/powerpc32/fpu/s_fmax.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fmax.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fmax, fmaxl, GLIBC_2_1)
-#endif
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_fmin.S b/sysdeps/powerpc/powerpc32/fpu/s_fmin.S
deleted file mode 100644
index 6d4a0a946c..0000000000
--- a/sysdeps/powerpc/powerpc32/fpu/s_fmin.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fmin.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fmin, fminl, GLIBC_2_1)
-#endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_fmax.S b/sysdeps/powerpc/powerpc64/fpu/s_fmax.S
deleted file mode 100644
index 69735761ab..0000000000
--- a/sysdeps/powerpc/powerpc64/fpu/s_fmax.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fmax.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fmax, fmaxl, GLIBC_2_1)
-#endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_fmin.S b/sysdeps/powerpc/powerpc64/fpu/s_fmin.S
deleted file mode 100644
index 6d4a0a946c..0000000000
--- a/sysdeps/powerpc/powerpc64/fpu/s_fmin.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fmin.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fmin, fminl, GLIBC_2_1)
-#endif