powerpc: Refactor powerpc32 lround/lroundf/llround/llroundf

This patches consolidates all the powerpc llround{f} implementations on
the generic sysdeps/powerpc/powerpc32/fpu/s_llround{f}.

Checked on powerpc-linux-gnu (built without --with-cpu, with
--with-cpu=power4 and with --with-cpu=power5+ and --disable-multi-arch),
powerpc64-linux-gnu (built without --with-cp and with --with-cpu=power5+
and --disable-multi-arch).

	* sysdeps/powerpc/powerpc32/fpu/Makefile
	[$(subdir) == math] (CFLAGS-s_lround.c): New rule.
	* sysdeps/powerpc/powerpc32/fpu/s_llround.c (__llround): Add power5+
	and fctidz optimization.
	* sysdeps/powerpc/powerpc32/fpu/s_lround.S: Remove file.
	* sysdeps/powerpc/powerpc32/fpu/s_lround.c: New file.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
	(CFLAGS-s_llround-power6.c, CFLAGS-s_llround-power5+.c,
	CFLAGS-s_llround-ppc32.c, CFLAGS-s_lround-ppc32.c,
	CFLAGS-s_lround-power5+.c): New rule.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llround-power5+.c:
	New file.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llround-power6.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llround-ppc32.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lround-power5+.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lround-ppc32.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llround-power5+.S:
	Remove file.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llround-power6.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llround-ppc32.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lround-power5+.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lround-ppc32.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llroundf.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_llroundf.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llroundf.S: Likewise.

Reviewed-by: Gabriel F. T. Gomes <gabriel@inconstante.eti.br>

3 files changed, 0 insertions, 105 deletions

diff --git a/sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S b/sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S
deleted file mode 100644
index 5035170d94..0000000000
--- a/sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S
+++ /dev/null
@@ -1,53 +0,0 @@
-/* lround function.  POWER5+, PowerPC32 version.
-   Copyright (C) 2006-2019 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 <libm-alias-float.h>
-#include <libm-alias-double.h>
-
-/* long [r3] llround (float x [fp1])
-   IEEE 1003.1 lround function.  IEEE specifies "round to the nearest
-   integer value, rounding halfway cases away from zero, regardless of
-   the current rounding mode."  However PowerPC Architecture defines
-   "round to Nearest" as "Choose the best approximation. In case of a
-   tie, choose the one that is even (least significant bit o).".
-   So we pre-round using the V2.02 Floating Round to Integer Nearest
-   instruction before we use the Floating Convert to Integer Word with
-   round to zero instruction.  */
-
-	.machine	"power5"
-ENTRY (__llround)
-	stwu    r1,-16(r1)
-	cfi_adjust_cfa_offset (16)
-	frin	fp2,fp1
-	fctidz	fp3,fp2		/* Convert To Integer Word lround toward 0.  */
-	stfd	fp3,8(r1)
-	nop	/* Ensure the following load is in a different dispatch  */
-	nop	/* group to avoid pipe stall on POWER4&5.  */
-	nop
-	lwz	r3,8+HIWORD(r1)
-	lwz	r4,8+LOWORD(r1)
-	addi	r1,r1,16
-	blr
-	END (__llround)
-
-libm_alias_double (__llround, llround)
-
-strong_alias (__llround, __llroundf)
-libm_alias_float (__llround, llround)
diff --git a/sysdeps/powerpc/powerpc32/power5+/fpu/s_llroundf.S b/sysdeps/powerpc/powerpc32/power5+/fpu/s_llroundf.S
deleted file mode 100644
index 030d2fdff8..0000000000
--- a/sysdeps/powerpc/powerpc32/power5+/fpu/s_llroundf.S
+++ /dev/null
@@ -1 +0,0 @@
-/* __llroundf is in s_llround.S  */
diff --git a/sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S b/sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S
deleted file mode 100644
index f30a0bff3e..0000000000
--- a/sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S
+++ /dev/null
@@ -1,51 +0,0 @@
-/* lround function.  POWER5+, PowerPC32 version.
-   Copyright (C) 2006-2019 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 <libm-alias-float.h>
-#include <libm-alias-double.h>
-
-/* long [r3] lround (float x [fp1])
-   IEEE 1003.1 lround function.  IEEE specifies "round to the nearest
-   integer value, rounding halfway cases away from zero, regardless of
-   the current rounding mode."  However PowerPC Architecture defines
-   "round to Nearest" as "Choose the best approximation. In case of a
-   tie, choose the one that is even (least significant bit o).".
-   So we pre-round using the V2.02 Floating Round to Integer Nearest
-   instruction before we use the Floating Convert to Integer Word with
-   round to zero instruction.  */
-
-	.machine	"power5"
-ENTRY (__lround)
-	stwu    r1,-16(r1)
-	cfi_adjust_cfa_offset (16)
-	frin	fp2,fp1
-	fctiwz	fp3,fp2		/* Convert To Integer Word lround toward 0.  */
-	stfd	fp3,8(r1)
-	nop	/* Ensure the following load is in a different dispatch  */
-	nop	/* group to avoid pipe stall on POWER4&5.  */
-	nop
-	lwz	r3,8+LOWORD(r1)
-	addi	r1,r1,16
-	blr
-	END (__lround)
-
-libm_alias_double (__lround, lround)
-
-strong_alias (__lround, __lroundf)
-libm_alias_float (__lround, lround)