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CI-unixish.yml: added profile-guided optimization (PGO) to callgrind step #580

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Nov 1, 2025
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CI-unixish.yml: added profile-guided optimization (PGO) to callgrind step #580

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24 changes: 22 additions & 2 deletions .github/workflows/CI-unixish.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -43,11 +43,12 @@ jobs:
sudo apt-get update
sudo apt-get install valgrind

# llvm contains llvm-profdata
- name: Install missing software on ubuntu (clang++)
if: contains(matrix.os, 'ubuntu') && matrix.compiler == 'clang++'
run: |
sudo apt-get update
sudo apt-get install libc++-dev
sudo apt-get install libc++-dev llvm

# coreutils contains "nproc"
- name: Install missing software on macos
Expand Down Expand Up @@ -145,15 +146,34 @@ jobs:
run: |
wget https://github.com/danmar/simplecpp/archive/refs/tags/1.5.1.tar.gz
tar xvf 1.5.1.tar.gz
rm -f 1.5.1.tar.gz

make clean
make -j$(nproc) CXXOPTS="-O2 -g3"
make -j$(nproc) CXXOPTS="-O2 -g3" simplecpp
VALGRIND_TOOL=callgrind SIMPLECPP_PATH=simplecpp-1.5.1 ./selfcheck.sh >callgrind.log || (cat callgrind.log && false)
cat callgrind.log

# PGO - start
make clean
make -j$(nproc) CXXOPTS="-O2 -g3 -fprofile-generate" LDOPTS="-fprofile-generate" simplecpp
SIMPLECPP_PATH=simplecpp-1.5.1 ./selfcheck.sh >/dev/null

if compgen -G "default_*.profraw" > /dev/null; then
llvm-profdata merge -output=default.profdata default_*.profraw
fi

make clean
make -j$(nproc) CXXOPTS="-O2 -g3 -fprofile-use" LDOPTS="-fprofile-use" simplecpp
VALGRIND_TOOL=callgrind SIMPLECPP_PATH=simplecpp-1.5.1 ./selfcheck.sh >callgrind_pgo.log || (cat callgrind_pgo.log && false)
cat callgrind_pgo.log
# PGO - end

for f in callgrind.out.*;
do
callgrind_annotate --auto=no $f > $f.annotated.log
head -50 $f.annotated.log
done
rm -rf simplecpp-1.5.1

- uses: actions/upload-artifact@v4
if: matrix.os == 'ubuntu-24.04'
Expand Down
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