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Message-Id: <37b4718f8c19e822e2089c52472ae68fbda5380f.1446893434.git.christophe.leroy@c-s.fr> Date: Tue, 17 Nov 2015 18:40:58 +0100 (CET) From: Christophe Leroy <christophe.leroy@....fr> To: Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Michael Ellerman <mpe@...erman.id.au>, scottwood@...escale.com Cc: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org Subject: [PATCH v4 23/23] powerpc32: Remove one insn in mulhdu Remove one instruction in mulhdu Signed-off-by: Christophe Leroy <christophe.leroy@....fr> --- v2: new v3: no change v4: 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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