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Re: [Xen-devel] [PATCH] x86-32: use __builtin_{memcpy,memset}

To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Tue, 11 May 2010 13:33:04 +0100
Cc: Charles Arnold <CARNOLD@xxxxxxxxxx>
Delivery-date: Tue, 11 May 2010 05:33:02 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

>>> Keir Fraser <keir.fraser@xxxxxxxxxxxxx> 11.05.10 14:04 >>>
>What about this alternative version which distinguishes between GCC 4.3+
>(which should auto-inline quite sensibly) and earlier versions (which need
>help via macro mapping explicitly to __builtin_*)?

I don't think this will do what we expect in the presence of -fno-builtin
(see also my other response).

Jan


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References:
- Re: [Xen-devel] [PATCH] x86-32: use __builtin_{memcpy,memset}
  - From: Keir Fraser
- Re: [Xen-devel] [PATCH] x86-32: use __builtin_{memcpy,memset}
  - From: Keir Fraser

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