[llvm-dev] [GSoC] Improve code generation testing

[shivam gupta via llvm-dev]

Hallo/Hello to Matthias Braun sir and all developers
My name is Shivam Gupta, currently I am in third year of Bachelor of
Engineering major in computer science from Samrat Ashok Technological
Institute,India and completed compiler theory course with the Dragon book
in last semester.

As a human nature we always want to try new things, test them, find
problems, want to correct them or come with new solutions.Testing is one of
most important and challenging task for the success of an application in
realworld development.Use of MIR serialization format for testing the code
generation passes is growing So also need of improving it.

I am interested in  "improve code generation testing" project.This was
listed but not implemented by any last two GSoC students so i think it is
very useful for llvm current development.It require depth knowledge of llvm
backend that i really want to gain.
As suggest possible projects are-

1.Create a single consistent format instead of the current mix of YAML + IR
+ MIR
2.Create a bugpoint mode (or a new tool) to reduce .mir test cases
3.Helper passes: strip IR information, rename blocks and values, debug
information, extract functions or blocks...
4.Create tool to remove unnecessary information from existing tests

>From last one month I am reading and practicing "Getting started with llvm
core libraries" by Bruno Cardoso Lopes sir and Rafael Auler sir. I had
completed kaleidoscope tutorial, read llvm blogs and llvm-dev mailing list
archives,browse source code through viewvc, view patches on phabricator and
bugzilla, watch videos of llvm developer's meeting on youtube very
profoundly.

I have intermediate knowledge of c++,python and some basic understanding of
bash and yaml syntex.I will feel happy and proud towork with llvm community.

I have following questions related to project-
1.Please explain in a little detail about first point how it can be achieve
and which part of code is affected.
2.I found  this
<http://blog.llvm.org/2015/11/reduce-your-testcases-with-bugpoint-and.html>
old blog by Mehdi Amini sir but inform if any work and discussion of this
objective is going-on in recent year.
3.Which of the passes had been implemented given in 3rd point and any other
new passes that should be included in llvm library?
4.Can you provide some examples of unnecessary information that should be
remove from tests?
happy to hear you
Best regard
Shivam
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