[llvm-commits] PATCH: Teach the x86 backend to fold mask & shift patterns into an addressing mode computation

Jakob Stoklund Olesen stoklund at 2pi.dk
Tue Jan 10 16:41:35 PST 2012

On Jan 10, 2012, at 4:38 PM, Chandler Carruth wrote:

> On Tue, Jan 10, 2012 at 2:46 PM, Jakob Stoklund Olesen <stoklund at 2pi.dk> wrote:
> On Jan 10, 2012, at 11:14 AM, Chandler Carruth wrote:
> > Anyone else have comments?
> Did you actually see code run faster?
> Simple addressing modes (base+offset) can be faster on Sandy Bridge, for example.
> Yes, as mentioned in my original message, I'm seeing noticable gains in the hot loop of Snappy. I can benchmark it and some other software and report more detailed performance numbers (and I'll do so either before or after the commit, either way)

Post-commit is fine.



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