about summary refs log tree commit diff
path: root/sysdeps/mips/submul_1.S
diff options
context:
space:
mode:
authorSteve Ellcey <sellcey@mips.com>2014-12-19 14:39:18 -0800
committerSteve Ellcey <sellcey@mips.com>2014-12-19 14:39:18 -0800
commit8b2800c0fb18f83d1ee8083d0a7ac15e0b011e73 (patch)
tree883f5ead649507e76a7ecfab18bf7fa5f08d4cc6 /sysdeps/mips/submul_1.S
parent04d55561978eb59e36ced8fc1e8d87a72ef70072 (diff)
downloadglibc-8b2800c0fb18f83d1ee8083d0a7ac15e0b011e73.tar.gz
glibc-8b2800c0fb18f83d1ee8083d0a7ac15e0b011e73.tar.xz
glibc-8b2800c0fb18f83d1ee8083d0a7ac15e0b011e73.zip
2014-12-19 Steve Ellcey <sellcey@imgtec.com>
	* sysdeps/mips/addmul_1.S (__mpn_addmul_1): Use mulu/muhu instead
	of multu on MIPSr6.
	* sysdeps/mips/mul_1.S (__mpn_mul_1): Ditto.
	* sysdeps/mips/submul_1.S (__mpn_submul_1): Ditto.
	* sysdeps/mips/mips64/addmul_1.S (__mpn_addmul_1): Ditto.
	* sysdeps/mips/mips64/mul_1.S (__mpn_mul_1): Ditto.
	* sysdeps/mips/mips64/submul_1.S (__mpn_submul_1): Ditto.
Diffstat (limited to 'sysdeps/mips/submul_1.S')
-rw-r--r--sysdeps/mips/submul_1.S31
1 files changed, 31 insertions, 0 deletions
diff --git a/sysdeps/mips/submul_1.S b/sysdeps/mips/submul_1.S
index ce888d49a2..4b8a265a28 100644
--- a/sysdeps/mips/submul_1.S
+++ b/sysdeps/mips/submul_1.S
@@ -42,7 +42,13 @@ ENTRY (__mpn_submul_1)
 
 	/* warm up phase 1 */
 	addiu	$5,$5,4
+#if __mips_isa_rev < 6
 	multu	$8,$7
+#else
+	mulu	$11,$8,$7
+	muhu	$12,$8,$7
+#endif
+	
 
 	addiu	$6,$6,-1
 	beq	$6,$0,L(LC0)
@@ -53,11 +59,21 @@ ENTRY (__mpn_submul_1)
 	lw	$8,0($5)	/* load new s1 limb as early as possible */
 
 L(Loop):	lw	$10,0($4)
+#if __mips_isa_rev < 6
 	mflo	$3
 	mfhi	$9
+#else
+	move	$3,$11
+	move	$9,$12
+#endif
 	addiu	$5,$5,4
 	addu	$3,$3,$2	/* add old carry limb to low product limb */
+#if __mips_isa_rev < 6
 	multu	$8,$7
+#else
+	mulu	$11,$8,$7
+	muhu	$12,$8,$7
+#endif
 	lw	$8,0($5)	/* load new s1 limb as early as possible */
 	addiu	$6,$6,-1	/* decrement loop counter */
 	sltu	$2,$3,$2	/* carry from previous addition -> $2 */
@@ -71,11 +87,21 @@ L(Loop):	lw	$10,0($4)
 
 	/* cool down phase 1 */
 L(LC1):	lw	$10,0($4)
+#if __mips_isa_rev < 6
 	mflo	$3
 	mfhi	$9
+#else
+	move	$3,$11
+	move	$9,$12
+#endif
 	addu	$3,$3,$2
 	sltu	$2,$3,$2
+#if __mips_isa_rev < 6
 	multu	$8,$7
+#else
+	mulu	$11,$8,$7
+	muhu	$12,$8,$7
+#endif
 	subu	$3,$10,$3
 	sgtu	$10,$3,$10
 	addu	$2,$2,$10
@@ -85,8 +111,13 @@ L(LC1):	lw	$10,0($4)
 
 	/* cool down phase 0 */
 L(LC0):	lw	$10,0($4)
+#if __mips_isa_rev < 6
 	mflo	$3
 	mfhi	$9
+#else
+	move	$3,$11
+	move	$9,$12
+#endif
 	addu	$3,$3,$2
 	sltu	$2,$3,$2
 	subu	$3,$10,$3