<div dir="ltr">Fred Chow is a well known name in compiler community. He was the architect of Open64 compiler. <div>His comment on LLVM IR from open64 mailing list can be seen at : <a href="https://sourceforge.net/p/open64/mailman/message/23829398/">https://sourceforge.net/p/open64/mailman/message/23829398/</a> <div>"<span style="background-color:rgb(254,254,254);color:rgb(85,85,85);font-family:monospace,sans-serif;font-size:14px;white-space:pre-wrap"> From their name, LLVM roughly corresponds to Low WHIRL. I wonder how </span></div><pre style="box-sizing:inherit;margin-top:0px;margin-bottom:0px;padding:15px;border-width:0px 0px 0px 1px;border-top-style:initial;border-right-style:initial;border-bottom-style:initial;border-left-style:solid;border-top-color:initial;border-right-color:initial;border-bottom-color:initial;border-left-color:rgb(229,229,229);outline:0px;font-size:14px;vertical-align:baseline;background:rgb(254,254,254);font-family:monospace,sans-serif;white-space:pre-wrap;overflow:auto;color:rgb(85,85,85)">LLVM tackles the compilation problems Open64 has tackled. People with
exposure to LLVM are welcome to chime in."</pre><pre style="box-sizing:inherit;margin-top:0px;margin-bottom:0px;padding:15px;border-width:0px 0px 0px 1px;border-top-style:initial;border-right-style:initial;border-bottom-style:initial;border-left-style:solid;border-top-color:initial;border-right-color:initial;border-bottom-color:initial;border-left-color:rgb(229,229,229);outline:0px;font-size:14px;vertical-align:baseline;background:rgb(254,254,254);font-family:monospace,sans-serif;white-space:pre-wrap;overflow:auto;color:rgb(85,85,85)"><br></pre><pre style="box-sizing:inherit;margin-top:0px;margin-bottom:0px;padding:15px;border-width:0px 0px 0px 1px;border-top-style:initial;border-right-style:initial;border-bottom-style:initial;border-left-style:solid;border-top-color:initial;border-right-color:initial;border-bottom-color:initial;border-left-color:rgb(229,229,229);outline:0px;font-size:14px;vertical-align:baseline;background:rgb(254,254,254);font-family:monospace,sans-serif;white-space:pre-wrap;overflow:auto;color:rgb(85,85,85)"><br></pre></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Feb 17, 2020 at 10:43 PM Prashanth N R <<a href="mailto:prashanth.nr@gmail.com">prashanth.nr@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Currently LLVM uses a low level IR for representing programs. Memory disambiguation does not happen accurately for constructs like multi-dimensional arrays. One of the ways we alleviate the same in LLVM currently is by using multiversioning of the code. By supporting a mid-level IR like MLIR we intend to keep the access indices of multidimensional array and do better disambiguation. </div><div><br></div><div>thanks,</div><div>-Prashanth</div> <br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 16, 2020 at 4:34 PM Nicolai Hähnle <<a href="mailto:nhaehnle@gmail.com" target="_blank">nhaehnle@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Prashanth,<br>
<br>
On Sun, Feb 16, 2020 at 10:22 AM Prashanth N R via llvm-dev<br>
<<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>> wrote:<br>
>> Starting from May-June, we at "Compiler Tree" would start porting clang compiler to use MLIR as middle end target. If someone has already started a similar effort we would love to collaborate with them. If someone would like to work with us, we are ready to form a group and collaborate. If there are sharing opportunities from Fortran side, we would like to consider the same.\<br>
<br>
That's a rather vague statement, considering the flexibility of MLIR.<br>
Could you explain your plans in more detail, and what specifically you<br>
hope to achieve with them?<br>
<br>
Cheers,<br>
Nicolai<br>
<br>
<br>
>><br>
>> We are in the early phase of design for "C" part of the work. From our experience with (FC+MLIR) compiler, we are estimating that we would have an early cut of the compiler working with non-trivial workload within a quarter of starting of work.<br>
>><br>
>> Please ping me for any queries or concerns.<br>
>><br>
>> Regards,<br>
>> -Prashanth<br>
><br>
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<br>
<br>
<br>
-- <br>
Lerne, wie die Welt wirklich ist,<br>
aber vergiss niemals, wie sie sein sollte.<br>
</blockquote></div></div>
</blockquote></div>