Clang optimization levels
I found this related question. To sum it up, to find out about compiler optimization passes: llvm-as < /dev/null | opt -O3 -disable-output -debug-pass=Arguments As pointed out in Geoff Nixon‘s answer (+1), clang additionally runs some higher level optimizations, which we can retrieve with: echo ‘int;’ | clang -xc -O3 – -o /dev/null -\#\#\# Documentation … Read more