Messages in this thread |  | | Subject | Re: [PATCH 02/17] x86, lto: Disable fancy hweight optimizations for LTO v2 | From | "H. Peter Anvin" <> | Date | Sat, 08 Feb 2014 13:43:29 -0800 |
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That's fine.
On February 8, 2014 12:21:24 PM PST, Andi Kleen <ak@linux.intel.com> wrote: >On Sat, Feb 08, 2014 at 10:52:07AM -0800, H. Peter Anvin wrote: >> On 02/08/2014 12:01 AM, Andi Kleen wrote: >> > The fancy x86 hweight uses different compiler options for the >> > hweight file. This does not work with LTO. Just disable the >optimization >> > with LTO >> >> No, I'm going to NAK this. This means not using the POPCNT >instruction >> if LTO is enabled, and that really isn't an acceptable option. > >I thought the use was obscure? > >Ok, suppose can just disable LTO for the file. >The only drawback is that the functions will not be optimized away when >not used, as they'll need to be __visible. > >-Andi
-- Sent from my mobile phone. Please pardon brevity and lack of formatting.
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