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Re: [PATCH] Mark inputs being ZERO as unlikely __mul in powerpc
- From: Siddhesh Poyarekar <siddhesh at redhat dot com>
- To: libc-alpha at sourceware dot org
- Cc: rsa at us dot ibm dot com
- Date: Wed, 20 Feb 2013 19:48:52 +0530
- Subject: Re: [PATCH] Mark inputs being ZERO as unlikely __mul in powerpc
- References: <20130220134921.GE26842@spoyarek.pnq.redhat.com>
On Wed, Feb 20, 2013 at 07:19:21PM +0530, Siddhesh Poyarekar wrote:
> Hi,
>
> The patch below marks the case of X or Y being ZERO as unlikely on
> powerpc. This makes no difference to the generated code. The only
> purpose is to sync up the code with the default code. OK to commit?
>
Sorry, this does not result in identical code. It improves
performance by a tiny bit (0.3%), similar to that on x86. OK to
commit?
Siddhesh