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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 |
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| Analysis | ||
| Assembler | ||
| Bindings | ||
| Bitcode | ||
| BugPoint | ||
| CodeGen | ||
| DebugInfo | ||
| Demangle | ||
| Examples | ||
| ExecutionEngine | ||
| Feature | ||
| FileCheck | ||
| Instrumentation | ||
| Integer | ||
| JitListener | ||
| Linker | ||
| LTO | ||
| MachineVerifier | ||
| MC | ||
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| ThinLTO/X86 | ||
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| YAMLParser | ||
| .clang-format | ||
| CMakeLists.txt | ||
| lit.cfg.py | ||
| lit.site.cfg.py.in | ||
| TestRunner.sh | ||