Optimize mempcpy on sparc.

	* sysdeps/sparc/sparc32/memcpy.S: Implement mempcpy using a stub
	that branches into memcpy.
	* sysdeps/sparc/sparc64/memcpy.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Add mempcpy multiarch
	bits.
	* sysdeps/sparc/sparc64/rtld-memcpy.c: Include generic mempcpy
	implementation too.
	* sysdeps/sparc/mempcpy.S: New file.

9 files changed, 124 insertions, 13 deletions

diff --git a/ChangeLog b/ChangeLog
index 555c3957f9..23b72905f5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,17 @@
 2012-03-28  David S. Miller  <davem@davemloft.net>
 
+	* sysdeps/sparc/sparc32/memcpy.S: Implement mempcpy using a stub
+	that branches into memcpy.
+	* sysdeps/sparc/sparc64/memcpy.S: Likewise.
+	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S: Likewise.
+	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
+	* sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: Likewise.
+	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Add mempcpy multiarch
+	bits.
+	* sysdeps/sparc/sparc64/rtld-memcpy.c: Include generic mempcpy
+	implementation too.
+	* sysdeps/sparc/mempcpy.S: New file.
+
 	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Provide a hidden def to
 	the IFUNC routine in the libc case.
 	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Likewise.
diff --git a/sysdeps/sparc/mempcpy.S b/sysdeps/sparc/mempcpy.S
new file mode 100644
index 0000000000..4c98013757
--- /dev/null
+++ b/sysdeps/sparc/mempcpy.S
@@ -0,0 +1 @@
+/* mempcpy is in memcpy.S */
diff --git a/sysdeps/sparc/sparc32/memcpy.S b/sysdeps/sparc/sparc32/memcpy.S
index a36f1d6aa0..82fa6d1045 100644
--- a/sysdeps/sparc/sparc32/memcpy.S
+++ b/sysdeps/sparc/sparc32/memcpy.S
@@ -104,11 +104,17 @@
 	std	%t2, [%dst + offset + offset2 + 0x08];
 
 	.text
-	.align	4
+ENTRY(__mempcpy)
+	add		%o0, %o2, %g1
+	ba		101f
+	 st		%g1, [%sp + 64]
+END(__mempcpy)
 
+	.align	4
 ENTRY(memcpy)		/* %o0=dst %o1=src %o2=len */
-	sub		%o0, %o1, %o4
 	st		%o0, [%sp + 64]
+101:
+	sub		%o0, %o1, %o4
 9:	andcc		%o4, 3, %o5
 0:	bne		86f
 	 cmp		%o2, 15
@@ -641,3 +647,7 @@ ENTRY(memcpy)		/* %o0=dst %o1=src %o2=len */
 END(memcpy)
 
 libc_hidden_builtin_def (memcpy)
+
+libc_hidden_def (__mempcpy)
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_builtin_def (mempcpy)
diff --git a/sysdeps/sparc/sparc64/memcpy.S b/sysdeps/sparc/sparc64/memcpy.S
index a77c4e441f..668ebecef1 100644
--- a/sysdeps/sparc/sparc64/memcpy.S
+++ b/sysdeps/sparc/sparc64/memcpy.S
@@ -374,19 +374,24 @@ ENTRY(__memcpy_large)
 	 mov		%g4, %o0
 END(__memcpy_large)
 
+ENTRY(__mempcpy)
+	ba,pt		%xcc, 210f
+	 add		%o0, %o2, %g4
+END(__mempcpy)
+
 	.align		32
 ENTRY(memcpy)
+	 mov		%o0, %g4			/* IEU0		Group		*/
 210:
 #ifndef USE_BPR
-	srl		%o2, 0, %o2			/* IEU1		Group		*/
+	srl		%o2, 0, %o2			/* IEU1				*/
 #endif	
 	brz,pn		%o2, 209b			/* CTI		Group		*/
-	 mov		%o0, %g4			/* IEU0				*/
-218:	cmp		%o2, 15				/* IEU1		Group		*/
-	bleu,pn		%xcc, 208b			/* CTI				*/
-	 cmp		%o2, (64 * 6)			/* IEU1		Group		*/
-	bgeu,pn		%xcc, 200b			/* CTI				*/
-	 andcc		%o0, 7, %g2			/* IEU1		Group		*/
+218:	 cmp		%o2, 15				/* IEU1				*/
+	bleu,pn		%xcc, 208b			/* CTI		Group		*/
+	 cmp		%o2, (64 * 6)			/* IEU1				*/
+	bgeu,pn		%xcc, 200b			/* CTI		Group		*/
+	 andcc		%o0, 7, %g2			/* IEU1				*/
 	sub		%o0, %o1, %g5			/* IEU0				*/
 	andcc		%g5, 3, %o5			/* IEU1		Group		*/
 	bne,pn		%xcc, 212f			/* CTI				*/
@@ -569,3 +574,7 @@ ENTRY(memcpy)
 END(memcpy)
 
 libc_hidden_builtin_def (memcpy)
+
+libc_hidden_def (__mempcpy)
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_builtin_def (mempcpy)
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S
index 8bada0eeec..6ba1b0c6e9 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S
@@ -43,13 +43,19 @@
 
 	.text
 
+ENTRY(__mempcpy_niagara1)
+	ba,pt		%XCC, 101f
+	 add		%o0, %o2, %g5
+END(__mempcpy_niagara1)
+
 	.align		32
 ENTRY(__memcpy_niagara1)
+100:	/* %o0=dst, %o1=src, %o2=len */
+	mov		%o0, %g5
+101:
 # ifndef USE_BPR
 	srl		%o2, 0, %o2
 # endif
-100:	/* %o0=dst, %o1=src, %o2=len */
-	mov		%o0, %g5
 	cmp		%o2, 0
 	be,pn		%XCC, 85f
 218:	 or		%o0, %o1, %o3
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S
index ccbb0252f3..0e9442de5f 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S
@@ -145,13 +145,19 @@
 
 	.text
 
+ENTRY(__mempcpy_niagara2)
+	ba,pt		%XCC, 101f
+	 add		%o0, %o2, %g5
+END(__mempcpy_niagara2)
+
 	.align		32
 ENTRY(__memcpy_niagara2)
+100:	/* %o0=dst, %o1=src, %o2=len */
+	mov		%o0, %g5
+101:
 # ifndef USE_BPR
 	srl		%o2, 0, %o2
 # endif
-100:	/* %o0=dst, %o1=src, %o2=len */
-	mov		%o0, %g5
 	cmp		%o2, 0
 	be,pn		%XCC, 85f
 218:	 or		%o0, %o1, %o3
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S b/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
index 7e21665d5f..0784ba9b5d 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
@@ -38,6 +38,11 @@
 
 	.text
 
+ENTRY(__mempcpy_ultra3)
+	ba,pt		%XCC, 101f
+	 add		%o0, %o2, %g5
+END(__mempcpy_ultra3)
+
 	/* Special/non-trivial issues of this code:
 	 *
 	 * 1) %o5 is preserved from VISEntryHalf to VISExitHalf
@@ -57,6 +62,7 @@ ENTRY(__memcpy_ultra3)
 
 100: /* %o0=dst, %o1=src, %o2=len */
 	mov		%o0, %g5
+101:
 	cmp		%o2, 0
 	be,pn		%XCC, out
 218:	 or		%o0, %o1, %o3
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy.S b/sysdeps/sparc/sparc64/multiarch/memcpy.S
index 0f3751e5e7..20c72d9bbd 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy.S
@@ -72,12 +72,72 @@ ENTRY(memcpy)
 	 mov	%o1, %o0
 END(memcpy)
 
+ENTRY(__mempcpy)
+	.type	__mempcpy, @gnu_indirect_function
+# ifdef SHARED
+	SETUP_PIC_REG_LEAF(o3, o5)
+# endif
+	andcc	%o0, HWCAP_SPARC_N2, %g0
+	be	1f
+	 andcc	%o0, HWCAP_SPARC_BLKINIT, %g0
+# ifdef SHARED
+	sethi	%gdop_hix22(__mempcpy_niagara2), %o1
+	xor	%o1, %gdop_lox10(__mempcpy_niagara2), %o1
+# else
+	set	__mempcpy_niagara2, %o1
+# endif
+	ba	10f
+	 nop
+1:	be	1f
+	 andcc	%o0, HWCAP_SPARC_ULTRA3, %g0
+# ifdef SHARED
+	sethi	%gdop_hix22(__mempcpy_niagara1), %o1
+	xor	%o1, %gdop_lox10(__mempcpy_niagara1), %o1
+# else
+	set	__mempcpy_niagara1, %o1
+# endif
+	ba	10f
+	 nop
+1:	be	9f
+	 nop
+# ifdef SHARED
+	sethi	%gdop_hix22(__mempcpy_ultra3), %o1
+	xor	%o1, %gdop_lox10(__mempcpy_ultra3), %o1
+# else
+	set	__mempcpy_ultra3, %o1
+# endif
+	ba	10f
+	 nop
+9:
+# ifdef SHARED
+	sethi	%gdop_hix22(__mempcpy_ultra1), %o1
+	xor	%o1, %gdop_lox10(__mempcpy_ultra1), %o1
+# else
+	set	__mempcpy_ultra1, %o1
+# endif
+10:
+# ifdef SHARED
+	add	%o3, %o1, %o1
+# endif
+	retl
+	 mov	%o1, %o0
+END(__mempcpy)
+
 libc_hidden_builtin_def (memcpy)
 
+libc_hidden_def (__mempcpy)
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_builtin_def (mempcpy)
+
 #undef libc_hidden_builtin_def
 #define libc_hidden_builtin_def(name)
+#undef weak_alias
+#define weak_alias(x, y)
+#undef libc_hidden_def
+#define libc_hidden_def(name)
 
 #define memcpy __memcpy_ultra1
+#define __mempcpy __mempcpy_ultra1
 
 #endif
 
diff --git a/sysdeps/sparc/sparc64/rtld-memcpy.c b/sysdeps/sparc/sparc64/rtld-memcpy.c
index 5e50e6effe..b1b06479d2 100644
--- a/sysdeps/sparc/sparc64/rtld-memcpy.c
+++ b/sysdeps/sparc/sparc64/rtld-memcpy.c
@@ -1 +1,2 @@
 #include <string/memcpy.c>
+#include <string/mempcpy.c>