<div dir="ltr">Yes, I'm running all the existing passes that I know how to run. I didn't know they returned change-made. Thanks!<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 21, 2015 at 12:36 PM, Artur Pilipenko <span dir="ltr"><<a href="mailto:apilipenko@azulsystems.com" target="_blank">apilipenko@azulsystems.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Are you going to run some of the existing passes? Why can’t you just use the returned change-made value from the passes?<br>
<span class="HOEnZb"><font color="#888888"><br>
Artur<br>
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> On 20 Dec 2015, at 15:43, Russell Wallace via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br>
><br>
> I want to run a bunch of optimizations, iteratively, that is keep running until things stop changing (to make sure all optimization opportunities are taken). As far as I know, there is no way to copy a module or compare modules by value, so it occurs to me that a practical solution might be to take the hash code of the module and see if that changes.<br>
><br>
> A problem is that hash algorithms are designed to work on streams of bytes, not compound objects.<br>
><br>
> First attempt at a solution: iterate through all instructions in all functions and hash the instruction kinds. I can think of some possible changes that would fail to be captured by that.<br>
><br>
> Is there any already known solution?<br>
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