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from 889833f36e1 [WebAssembly] Fix MSVC build new 2f472871bc1 [X86] Add support for passing 'prefer-vector-width' functio [...] new 8bb1297fe01 [X86] Teach X86 codegen to use vector width preference to a [...] new 860652c3f8c CodeGen: handle llvm.used properly for COFF

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Summary of changes: include/llvm/CodeGen/TargetLoweringObjectFile.h | 3 + .../llvm/CodeGen/TargetLoweringObjectFileImpl.h | 3 + include/llvm/IR/Mangler.h | 3 + lib/CodeGen/AsmPrinter/AsmPrinter.cpp | 30 ++ lib/CodeGen/TargetLoweringObjectFileImpl.cpp | 5 + lib/IR/Mangler.cpp | 10 + lib/Target/X86/X86.td | 4 + lib/Target/X86/X86ISelLowering.cpp | 101 ++++- lib/Target/X86/X86Subtarget.cpp | 12 +- lib/Target/X86/X86Subtarget.h | 26 +- lib/Target/X86/X86TargetMachine.cpp | 22 +- lib/Target/X86/X86TargetTransformInfo.cpp | 9 +- test/CodeGen/X86/coff-no-dead-strip.ll | 20 + test/CodeGen/X86/prefer-avx256-lzcnt.ll | 130 ++++++ test/CodeGen/X86/prefer-avx256-mask-extend.ll | 260 +++++++++++ test/CodeGen/X86/prefer-avx256-mask-shuffle.ll | 194 +++++++++ test/CodeGen/X86/prefer-avx256-popcnt.ll | 105 +++++ test/CodeGen/X86/prefer-avx256-shift.ll | 475 +++++++++++++++++++++ test/CodeGen/X86/prefer-avx256-trunc.ll | 50 +++ test/CodeGen/X86/prefer-avx256-wide-mul.ll | 44 ++ test/Transforms/LoopVectorize/X86/avx512.ll | 77 ++++ 21 files changed, 1558 insertions(+), 25 deletions(-) create mode 100644 test/CodeGen/X86/coff-no-dead-strip.ll create mode 100644 test/CodeGen/X86/prefer-avx256-lzcnt.ll create mode 100644 test/CodeGen/X86/prefer-avx256-mask-extend.ll create mode 100644 test/CodeGen/X86/prefer-avx256-mask-shuffle.ll create mode 100644 test/CodeGen/X86/prefer-avx256-popcnt.ll create mode 100644 test/CodeGen/X86/prefer-avx256-shift.ll create mode 100644 test/CodeGen/X86/prefer-avx256-trunc.ll create mode 100644 test/CodeGen/X86/prefer-avx256-wide-mul.ll