[llvm-commits] [llvm] r126445 - in /llvm/trunk: lib/Transforms/Utils/SimplifyCFG.cpp test/Transforms/SimplifyCFG/select-gep.ll

[Evan Cheng]

Speculation is nice, but I would feel a lot better if there are hard numbers to back this up. Are we sure these changes are improving performance?

Evan

On Feb 24, 2011, at 11:08 PM, Frits van Bommel wrote:

> On Fri, Feb 25, 2011 at 12:37 AM, Dan Gohman <gohman at apple.com> wrote:
>> A gep with one non-constant index is a multiply and an add. How
>> speculative are you feeling? ;-)
> 
> Good point. Maybe just if we know that one non-constant index indexes
> over a type whose size is a power of two (including 1) then?
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