[PATCH] D30651: [InlineCost, -Oz] Don't take into account the penalty of a fast call of frequently used functions

[Evgeny Astigeevich via Phabricator via llvm-commits]

eastig added a comment.

LNT data I've got at the moment:

- x86

FrequentFuncThreshold: 2+ callers

|                                                    | Code size change | Exe time |
| MultiSource/Applications/SPASS/SPASS               | -6.21%           | +0..+1%  |
| MultiSource/Benchmarks/FreeBench/distray/distray   | -2.79%           | 0%       |
| SingleSource/Benchmarks/Misc/perlin                | -2.32%           | 0%       |
| SingleSource/Benchmarks/BenchmarkGame/Large/fasta  | -1.75%           | 0%       |
| MultiSource/Applications/sqlite3/sqlite3           | -1.09%           | +0..1%   |
| SingleSource/Benchmarks/Misc-C++/Large/sphereflake | +1.54%           | 0%       |
| MultiSource/Benchmarks/Olden/tsp/tsp               | +1.16%           | 0%       |

FrequentFuncThreshold: 3+ callers

|                                                  | Code size change | Exe time |
| MultiSource/Applications/SPASS/SPASS             | -6.29%           | +0..+1%  |
| MultiSource/Benchmarks/FreeBench/distray/distray | -2.79%           | 0%       |
| MultiSource/Applications/sqlite3/sqlite3         | -1.27%           | +0..1%   |



- AArch64

FrequentFuncThreshold: 2+ callers

|                                                  | Code size change | Exe time |
| MultiSource/Benchmarks/Olden/perimeter/perimeter | -4.0%            | +5%      |
| MultiSource/Applications/SPASS/SPASS             | -3.97%           | +4%      |
| MultiSource/Benchmarks/FreeBench/distray/distray | -1.17%           | 0%       |
| MultiSource/Applications/sqlite3/sqlite3         | -1.05%           | +2%      |

FrequentFuncThreshold: 3+ callers

|                                                  | Code size change | Exe time |
| MultiSource/Applications/SPASS/SPASS             | -4.04%           | +4%      |
| MultiSource/Benchmarks/Olden/perimeter/perimeter | -4.0%            | 4%       |
| MultiSource/Benchmarks/FreeBench/distray/distray | -1.17%           | 0%       |
| MultiSource/Applications/sqlite3/sqlite3         | -1.11%           | +3%      |


https://reviews.llvm.org/D30651