Update BOLT's README.md example optimization flag #166251
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Drop hfsort in favor of a more modern function reordering algorithm.
rafaelauler
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aaupov,
ayermolo,
maksfb,
paschalis-mpeis,
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yozhu
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@llvm/pr-subscribers-bolt Author: Rafael Auler (rafaelauler) ChangesDrop hfsort in favor of a more modern function reordering algorithm. Full diff: https://github.com/llvm/llvm-project/pull/166251.diff 1 Files Affected:
diff --git a/bolt/README.md b/bolt/README.md
index 902d1eb6e7694..55f742c5019f5 100644
--- a/bolt/README.md
+++ b/bolt/README.md
@@ -173,7 +173,7 @@ Once you have `perf.fdata` ready, you can use it for optimizations with
BOLT. Assuming your environment is setup to include the right path, execute
`llvm-bolt`:
```
-$ llvm-bolt <executable> -o <executable>.bolt -data=perf.fdata -reorder-blocks=ext-tsp -reorder-functions=hfsort -split-functions -split-all-cold -split-eh -dyno-stats
+$ llvm-bolt <executable> -o <executable>.bolt -data=perf.fdata -reorder-blocks=ext-tsp -reorder-functions=cdsort -split-functions -split-all-cold -split-eh -dyno-stats
```
If you do need an updated debug info, then add `-update-debug-sections` option
|
yozhu
approved these changes
Nov 3, 2025
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Drop hfsort in favor of a more modern function reordering algorithm.