try using latest LLVM instead of tot to see effect on testing time
diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7751604..d3f4c1f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -139,8 +139,8 @@
tar -C ~ -xf ~/emsdk-main.tar.gz
mv ~/emsdk-main ~/emsdk
cd ~/emsdk
- ./emsdk install tot
- ./emsdk activate tot
+ ./emsdk install latest
+ ./emsdk activate latest
# Remove the emsdk version of emscripten to save space in the
# persistent workspace and to avoid any confusion with the version
# we are trying to test.