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| author | Hongtao Yu <hoy@fb.com> | 2022-01-25 16:11:41 -0800 |
|---|---|---|
| committer | Hongtao Yu <hoy@fb.com> | 2022-01-25 21:36:38 -0800 |
| commit | cc4beda039ba5441b76b5b112dd5f69553965186 (patch) | |
| tree | c089d8e7e52b35f1d5168712d78a8637f3e9f833 /llvm/lib/Support/FileUtilities.cpp | |
| parent | ad0345aed1e76f98c6ad55372b675c5647e16d28 (diff) | |
| download | llvm-cc4beda039ba5441b76b5b112dd5f69553965186.zip llvm-cc4beda039ba5441b76b5b112dd5f69553965186.tar.gz llvm-cc4beda039ba5441b76b5b112dd5f69553965186.tar.bz2 | |
[CSSPGO] Adjust SampleContextFrameVector to be a shorter SmallVector
It appears that some memory saving can be archived by tweaking the existing `SampleContextFrameVector` setup. Below are memory usage for two benchmarks before and after this change.
1. Medium benchmark:
- Before:
```
note: After computeSizeForProfiledFunctions
note: VM: 12.50 GB RSS: 11.02 GB
note: After generateProbeBasedProfile
note: **VM: 30.56 GB RSS: 29.08 GB**
note: After postProcessProfiles
note: VM: 31.91 GB RSS: 30.43 GB
```
- After:
```
note: After computeSizeForProfiledFunctions
note: VM: 12.26 GB RSS: 10.80 GB
note: After generateProbeBasedProfile
note: **VM: 28.76 GB RSS: 27.29 GB**
note: After postProcessProfiles
note: VM: 30.12 GB RSS: 28.66 GB
```
2. Large benchmark:
- Before:
```
note: After computeSizeForProfiledFunctions
note: VM: 106.28 GB RSS: 91.25 GB
note: After generateProbeBasedProfile
note: **VM: 245.19 GB RSS: 224.30 GB**
note: After postProcessProfiles
note: VM: 254.96 GB RSS: 221.58 GB
```
- After:
```
note: After computeSizeForProfiledFunctions
note: VM: 105.95 GB RSS: 91.04 GB
note: After generateProbeBasedProfile
note: VM: **234.29 GB RSS: 215.39 GB**
note: After postProcessProfiles
note: VM: 244.03 GB RSS: 213.45 GB
```
Reviewed By: wenlei
Differential Revision: https://reviews.llvm.org/D118203
Diffstat (limited to 'llvm/lib/Support/FileUtilities.cpp')
0 files changed, 0 insertions, 0 deletions