forked from OSchip/llvm-project
886629a8c9
This patch implements first part of Flow Sensitive SampleFDO (FSAFDO). It has the following changes: (1) disable current discriminator encoding scheme, (2) new hierarchical discriminator for FSAFDO. For this patch, option "-enable-fs-discriminator=true" turns on the new functionality. Option "-enable-fs-discriminator=false" (the default) keeps the current SampleFDO behavior. When the fs-discriminator is enabled, we insert a flag variable, namely, llvm_fs_discriminator, to the object. This symbol will checked by create_llvm_prof tool, and used to generate a profile with FS-AFDO discriminators enabled. If this happens, for an extbinary format profile, create_llvm_prof tool will add a flag to profile summary section. Differential Revision: https://reviews.llvm.org/D102246 |
||
|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| Caching.cpp | ||
| LTO.cpp | ||
| LTOBackend.cpp | ||
| LTOCodeGenerator.cpp | ||
| LTOModule.cpp | ||
| SummaryBasedOptimizations.cpp | ||
| ThinLTOCodeGenerator.cpp | ||
| UpdateCompilerUsed.cpp | ||