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from da35e5e8bec [Hexagon] Prefer L2_loadrub_io over L4_loadrub_rr new dd33e177dd8 Irreducible loop metadata for more accurate block frequency [...]
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Summary of changes: docs/LangRef.rst | 23 +++ include/llvm/Analysis/BlockFrequencyInfo.h | 4 + include/llvm/Analysis/BlockFrequencyInfoImpl.h | 49 ++++- include/llvm/CodeGen/MachineBasicBlock.h | 10 + include/llvm/CodeGen/MachineBlockFrequencyInfo.h | 2 + include/llvm/IR/BasicBlock.h | 2 + include/llvm/IR/LLVMContext.h | 1 + include/llvm/IR/MDBuilder.h | 3 + include/llvm/Transforms/PGOInstrumentation.h | 2 + lib/Analysis/BlockFrequencyInfo.cpp | 5 + lib/Analysis/BlockFrequencyInfoImpl.cpp | 21 +++ lib/CodeGen/MachineBasicBlock.cpp | 8 + lib/CodeGen/MachineBlockFrequencyInfo.cpp | 6 + lib/IR/BasicBlock.cpp | 13 ++ lib/IR/LLVMContext.cpp | 1 + lib/IR/MDBuilder.cpp | 7 + .../Instrumentation/PGOInstrumentation.cpp | 28 ++- .../Analysis/BlockFrequencyInfo/irreducible_pgo.ll | 208 +++++++++++++++++++++ test/ThinLTO/X86/lazyload_metadata.ll | 4 +- .../PGOProfile/Inputs/irreducible.proftext} | 31 +-- test/Transforms/PGOProfile/irreducible.ll | 184 ++++++++++++++++++ 21 files changed, 588 insertions(+), 24 deletions(-) create mode 100644 test/Analysis/BlockFrequencyInfo/irreducible_pgo.ll copy test/{tools/llvm-cov/Inputs/prevent_false_instantiations.proftext => Transfor [...] create mode 100644 test/Transforms/PGOProfile/irreducible.ll