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[PATCH v3 23/23] powerpc32: Remove one insn in mulhdu

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  [PATCH v3 23/23] powerpc32: Remove one insn in mulhdu Christophe Leroy <christophe.leroy@c-s.fr> - 2015-11-17 15:10 +0100

#1271236 — [PATCH v3 23/23] powerpc32: Remove one insn in mulhdu

Remove one instruction in mulhdu

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
v2: new
v3: no change

 arch/powerpc/kernel/misc_32.S | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 1597424..870dc63 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -91,17 +91,16 @@ _GLOBAL(mulhdu)
 	addc	r7,r0,r7
 	addze	r4,r4
 1:	beqlr	cr1		/* all done if high part of A is 0 */
-	mr	r10,r3
 	mullw	r9,r3,r5
-	mulhwu	r3,r3,r5
+	mulhwu	r10,r3,r5
 	beq	2f
-	mullw	r0,r10,r6
-	mulhwu	r8,r10,r6
+	mullw	r0,r3,r6
+	mulhwu	r8,r3,r6
 	addc	r7,r0,r7
 	adde	r4,r4,r8
-	addze	r3,r3
+	addze	r10,r10
 2:	addc	r4,r4,r9
-	addze	r3,r3
+	addze	r3,r10
 	blr
 
 /*
-- 
2.1.0

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