Visual Studio 4 cores 8 threads 3.6 GHz
cmake -DLLVM_RELEASE_TBLGEN=OFF -DLLVM_TARGETS_TO_BUILD=all ../l
Debug total build time: 09:28.474

Visual Studio 4 cores 8 threads 3.6 GHz
buildutils: cmake -DLLVM_UTILS_ONLY=ON ../llvm
cmake -DLLVM_RELEASE_TBLGEN=ON -DLLVM_TARGETS_TO_BUILD=all ../l
Debug total build time: 06:28.372

Mac 4 cores 8 threads 2.8 GHz
cmake -DLLVM_RELEASE_TBLGEN=OFF -DLLVM_BUILD_TYPE=Debug ../llvm
time make -j12
real 5m39.351s
user 34m27.626s
sys 3m43.741s

Mac 4 cores 8 threads 2.8 GHz
cmake -DLLVM_RELEASE_TBLGEN=ON -DLLVM_BUILD_TYPE=Debug ../llvm
time make -j12
Longer time because CMake in run from scratch after clean on makefile projects
real 6m0.632s
user 35m4.402s
sys 3m59.502s