search for: howtobuildwithpgo

Hi! I'm trying to build a fast Clang for myself to use for debug builds on Clang itself, but I've been struggling for a very long time on it. Could you please help? I've been following this guide: https://llvm.org/docs/HowToBuildWithPGO.html I've quickly learned that its outdated, because the script it talks about doesn't work with the monorepo layout at all, but in any case, it does describe how to do the entire process by hand, so I went for that. Here are my steps: * Built a release version of LLVM/Clang/LLD/compiler-...

...;> Hi! >> >> I'm trying to build a fast Clang for myself to use for debug builds on >> Clang itself, but I've been struggling for a very long time on it. Could >> you please help? >> >> I've been following this guide: >> https://llvm.org/docs/HowToBuildWithPGO.html >> >> I've quickly learned that its outdated, because the script it talks about >> doesn't work with the monorepo layout at all, but in any case, it does >> describe how to do the entire process by hand, so I went for that. Here are >> my steps: >> &...

We would like to propose a new feature to disable optimizations on IR Functions that are considered “cold” by PGO profiles. The primary goal for this work is to improve code optimization speed (which also improves compilation and LTO speed) without making too much impact on target code performance. The mechanism is pretty simple: In the second phase (i.e. optimization phase) of PGO, we would add

Hello LLVM developers, Following some hints on this mailing list earlier this year on how to make clang faster than stock llvm.org builds I have implemented a script that builds a PGO optimized version of clang by following the guide here: http://llvm.org/docs/HowToBuildWithPGO.html This works great on macOS and Linux - we gained almost 15% in our project with this technique. I am now looking at doing this on Windows and I am running into problems. I bootstrap the build by downloading the 7.0.1 binaries from llvm.org, then pass clang-cl as the compiler and lld-link as t...