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2016 May 04
4
Filter optimization remarks by the hotness of the code region
This idea came up a few times recently [1][2] so I’d like start prototyping it. To summarize, we can emit optimization remarks using the -Rpass* options. These are currently emitted by optimizations like vectorization[3], unrolling, inlining and since last week loop distribution.
For large programs however this can amount to a lot of diagnostics output to sift through. Filtering this by the