averello/swift-mirror
1
0
Fork 0
mirror of https://github.com/apple/swift.git synced 2025-12-14 20:36:38 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #79528 from iThinker/improve-benchmark-readme

Browse Source 
Update benchmark README with info on how to ensure benchmarks test locally built stdlib
This commit is contained in:
Roman Temchenko
2025-02-24 22:01:44 -05:00
committed by GitHub
parent 068fd14037
commit 277518293e
1 changed files with 14 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
benchmark/README.md
View File

@@ -119,6 +119,11 @@ installed libraries instead, enable
This will reflect the performance of the Swift standard library
installed on the device, not the one included in the Swift root.
If a build fails with an error like `cannot find X in scope`, it may be because
default toolchains don't give access to stdlib SPI. Try using a dev toolchain
built locally or a dev snapshot from
[Swift.org](https://www.swift.org/install/).
### build-script using SwiftPM+LLBuild
To build the benchmarks using build-script/swiftpm, one must build both
@@ -148,6 +153,15 @@ swift-source/swift/benchmark$ .build/release/SwiftBench
...
```
### Troubleshooting
* To check what libraries benchmark is linked against, set the
`DYLD_PRINT_SEARCHING` environment variable. E.g.
`export DYLD_PRINT_SEARCHING=1`.
* To force linking with a locally built stdlib, use the `DYLD_LIBRARY_PATH`
environment variable. E.g. `export
DYLD_LIBRARY_PATH=<path_to_build_folder>/Ninja-ReleaseAssert/swift-macosx-x86_64/lib/swift/macosx/x86_64`.
## Editing in Xcode
It is now possible to work on swiftpm benchmarks in Xcode! This is done by using