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from f83ca8289b6 [LTO] - Get rid of friend 'computeDeadSymbols'. NFC. new c6483fb8735 Another try to commit 323321 (aggressive instruction combine).

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Summary of changes: docs/Passes.rst | 15 + include/llvm/InitializePasses.h | 1 + .../AggressiveInstCombine/AggressiveInstCombine.h | 34 ++ include/llvm/Transforms/Scalar.h | 7 + lib/LTO/LLVMBuild.txt | 1 + lib/Passes/LLVMBuild.txt | 2 +- lib/Passes/PassBuilder.cpp | 5 + lib/Passes/PassRegistry.def | 1 + .../AggressiveInstCombine.cpp | 110 ++++++ .../AggressiveInstCombineInternal.h | 119 ++++++ .../AggressiveInstCombine/CMakeLists.txt | 11 + .../LLVMBuild.txt | 7 +- .../AggressiveInstCombine/TruncInstCombine.cpp | 404 +++++++++++++++++++++ lib/Transforms/CMakeLists.txt | 1 + lib/Transforms/IPO/LLVMBuild.txt | 2 +- lib/Transforms/IPO/PassManagerBuilder.cpp | 4 + lib/Transforms/LLVMBuild.txt | 2 +- lib/Transforms/Scalar/LLVMBuild.txt | 2 +- test/Other/new-pm-defaults.ll | 1 + test/Other/new-pm-lto-defaults.ll | 6 +- test/Other/new-pm-thinlto-defaults.ll | 1 + .../AggressiveInstCombine/trunc_const_expr.ll | 79 ++++ .../AggressiveInstCombine/trunc_multi_uses.ll | 214 +++++++++++ tools/opt/CMakeLists.txt | 1 + tools/opt/opt.cpp | 1 + 25 files changed, 1021 insertions(+), 10 deletions(-) create mode 100644 include/llvm/Transforms/AggressiveInstCombine/AggressiveInstCombine.h create mode 100644 lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp create mode 100644 lib/Transforms/AggressiveInstCombine/AggressiveInstCombineInternal.h create mode 100644 lib/Transforms/AggressiveInstCombine/CMakeLists.txt copy lib/Transforms/{Scalar => AggressiveInstCombine}/LLVMBuild.txt (77%) create mode 100644 lib/Transforms/AggressiveInstCombine/TruncInstCombine.cpp create mode 100644 test/Transforms/AggressiveInstCombine/trunc_const_expr.ll create mode 100644 test/Transforms/AggressiveInstCombine/trunc_multi_uses.ll