nickdesaulniers added a comment. Posting quick benchmarks of linux kernel builds:
ac524886094db58112ca176e1d727330a94634a8 <https://reviews.llvm.org/rGac524886094db58112ca176e1d727330a94634a8> + D151587 <https://reviews.llvm.org/D151587> + D76096 <https://reviews.llvm.org/D76096> + D156154 <https://reviews.llvm.org/D156154>: $ hyperfine --prepare 'make LLVM=1 -j128 -s clean' --runs 30 'make LLVM=1 -j128 -s' Benchmark 1: make LLVM=1 -j128 -s Time (mean ± σ): 65.887 s ± 0.592 s [User: 4953.517 s, System: 278.530 s] Range (min … max): 65.008 s … 68.578 s 30 runs ac524886094db58112ca176e1d727330a94634a8 <https://reviews.llvm.org/rGac524886094db58112ca176e1d727330a94634a8> (i.e. baseline): $ hyperfine --prepare 'make LLVM=1 -j128 -s clean' --runs 30 'make LLVM=1 -j128 -s' Benchmark 1: make LLVM=1 -j128 -s Time (mean ± σ): 67.140 s ± 0.201 s [User: 5079.011 s, System: 291.879 s] Range (min … max): 66.764 s … 67.579 s 30 runs --- So it looks like this series speeds up the mean by ~1.9%. So to partially and proactively answer the question "does this series result in a performance regression?" at least for the linux kernel, it seems like no. But YMMV per codebase. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D76096/new/ https://reviews.llvm.org/D76096 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
