powerpc32: Remove one insn in mulhdu
authorChristophe Leroy <christophe.leroy@c-s.fr>
Tue, 9 Feb 2016 16:08:33 +0000 (17:08 +0100)
committerScott Wood <oss@buserror.net>
Fri, 11 Mar 2016 23:20:12 +0000 (17:20 -0600)
Remove one instruction in mulhdu

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
arch/powerpc/kernel/misc_32.S

index 3ec5a22..bf5160f 100644 (file)
@@ -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
 
 /*