Optimize trunc{,f} on sparc.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile: Add vis3
	trunc{,f} to libm-sysdep_routes.
	* sysdeps/sparc/sparc64/fpu/multiarch/Makefile: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc-vis3.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_trunc.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf-vis3.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_truncf.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_trunc.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_truncf.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_trunc-vis3.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_trunc.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_truncf-vis3.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_truncf.S: New file.
	* sysdeps/sparc/sparc64/fpu/s_trunc.S: New file.
	* sysdeps/sparc/sparc64/fpu/s_truncf.S: New file.

1 files changed, 54 insertions, 0 deletions

diff --git a/sysdeps/sparc/sparc64/fpu/s_truncf.S b/sysdeps/sparc/sparc64/fpu/s_truncf.S
new file mode 100644
index 0000000000..e25a1f595e
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/s_truncf.S
@@ -0,0 +1,54 @@
+/* Truncate argument to nearest integral value not larger than
+   the argument, sparc64 version.
+
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David S. Miller <davem@davemloft.net>, 2013.
+
+   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>
+
+	/* We pop constants into the FPU registers using the incoming
+	   argument stack slots, since this avoid having to use any PIC
+	   references.  We also thus avoid having to allocate a register
+	   window.
+
+	   VIS instructions are used to facilitate the formation of
+	   easier constants, and the propagation of the sign bit.  */
+
+#define TWO_TWENTYTHREE	0x4b000000		/* 2**23 */
+
+#define ZERO		%f10			/* 0.0 */
+#define SIGN_BIT	%f12			/* -0.0 */
+
+ENTRY (__truncf)
+	sethi	%hi(TWO_TWENTYTHREE), %o2
+	fzeros	ZERO
+	fnegs	ZERO, SIGN_BIT
+	st	%o2, [%sp + STACK_BIAS + 128]
+	fabss	%f1, %f14
+	ld	[%sp + STACK_BIAS + 128], %f16
+	fcmps	%fcc3, %f14, %f16
+	fmovsuge %fcc3, ZERO, %f14
+	fands	%f1, SIGN_BIT, SIGN_BIT
+	fstoi	%f14, %f14
+	fitos	%f14, %f14
+	fadds	%f1, ZERO, %f18
+	fmovsuge %fcc3, %f18, %f14
+	retl
+	 fors	%f14, SIGN_BIT, %f0
+END (__truncf)
+weak_alias (__truncf, truncf)