[PATCH] D29376: LTO: align the Monolithic LTO optimization pipeline on the ThinLTO and O2/O3 one

[Davide Italiano via Phabricator via llvm-commits]

davide added a comment.

In https://reviews.llvm.org/D29376#673588, @eastig wrote:

> Hi Mehdi,
>
> I've got results of benchmarks for Cortex-M7, they are better than for Cortex-M4:
>
> - The same benchmark failed because something wrong with a created executable.


Can you please open a bug at `llvm.org` with a repro?

> - A number of performance gains is 22. Five of them have score boost > 4x. 17 have no change or slight change. Max score boost is ~20x.
> - A number of performance losses is 23. Five of them have score degradation between 1.2x and 2.5x. 18 have no change or slight change. Max score degradation is ~2.5x.



In https://reviews.llvm.org/D29376#673588, @eastig wrote:

> Hi Mehdi,
>
> I've got results of benchmarks for Cortex-M7, they are better than for Cortex-M4:
>
> - The same benchmark failed because something wrong with a created executable.
> - A number of performance gains is 22. Five of them have score boost > 4x. 17 have no change or slight change. Max score boost is ~20x.
> - A number of performance losses is 23. Five of them have score degradation between 1.2x and 2.5x. 18 have no change or slight change. Max score degradation is ~2.5x.




In https://reviews.llvm.org/D29376#673588, @eastig wrote:

> Hi Mehdi,
>
> I've got results of benchmarks for Cortex-M7, they are better than for Cortex-M4:
>
> - The same benchmark failed because something wrong with a created executable.
> - A number of performance gains is 22. Five of them have score boost > 4x. 17 have no change or slight change. Max score boost is ~20x.
> - A number of performance losses is 23. Five of them have score degradation between 1.2x and 2.5x. 18 have no change or slight change. Max score degradation is ~2.5x.





https://reviews.llvm.org/D29376