The last use was removed by: commit ae0987d242e266847f21f5fa1bffa97ce3eff586 Author: Kazu Hirata <kazu@google.com> Date: Sat Jun 10 13:51:35 2023 -0700 Differential Revision: https://reviews.llvm.org/D152636
commit f7ca01333214f934c580c162afdee933e7430b6c Author: Nikita Popov <npopov@redhat.com> Date: Tue Feb 28 16:38:45 2023 +0100
Differential Revision: https://reviews.llvm.org/D138605
We create flag variable "__llvm_fs_discriminator__" in the binary to indicate that FSAFDO hierarchical discriminators are used. This variable might be GC'ed by the linker since it is not explicitly reference. I initially added the var to the use list in pass MIRFSDiscriminator but it did not work. It turned out the used global list is collected in lowering (before MIR pass) and then emitted in the end of pass pipeline. Here I add the variable to the use list in IR level's AddDiscriminators pass. The machine level code is still keep in the case IR's AddDiscriminators is not invoked. If this is the case, this just use -Wl,--export-dynamic-symbol=__llvm_fs_discriminator__ to force the emit. Differential Revision: https://reviews.llvm.org/D103988
Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D72143 Patch by Kazuaki Ishizaki.
This file lists every pass in LLVM, and is included by Pass.h, which is very popular. Every time we add, remove, or rename a pass in LLVM, it caused lots of recompilation. I found this fact by looking at this table, which is sorted by the number of times a file was changed over the last 100,000 git commits multiplied by the number of object files that depend on it in the current checkout: recompiles touches affected_files header 342380 95 3604 llvm/include/llvm/ADT/STLExtras.h 314730 234 1345 llvm/include/llvm/InitializePasses.h 307036 118 2602 llvm/include/llvm/ADT/APInt.h 213049 59 3611 llvm/include/llvm/Support/MathExtras.h 170422 47 3626 llvm/include/llvm/Support/Compiler.h 162225 45 3605 llvm/include/llvm/ADT/Optional.h 158319 63 2513 llvm/include/llvm/ADT/Triple.h 140322 39 3598 llvm/include/llvm/ADT/StringRef.h 137647 59 2333 llvm/include/llvm/Support/Error.h 131619 73 1803 llvm/include/llvm/Support/FileSystem.h Before this change, touching InitializePasses.h would cause 1345 files to recompile. After this change, touching it only causes 550 compiles in an incremental rebuild. Reviewers: bkramer, asbirlea, bollu, jdoerfert Differential Revision: https://reviews.llvm.org/D70211
Summary: Renamed setBaseDiscriminator to cloneWithBaseDiscriminator, to match similar APIs. Also changed its behavior to copy over the other discriminator components, instead of eliding them. Renamed cloneWithDuplicationFactor to cloneByMultiplyingDuplicationFactor, which more closely matches what this API does. Reviewers: dblaikie, wmi Reviewed By: dblaikie Subscribers: zzheng, llvm-commits Differential Revision: https://reviews.llvm.org/D56220 llvm-svn: 351996
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636