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from 42d5f66fabc [WebAssembly] Fix unwind mismatch stat computation new 644c65ae21c [X86] Add new calling convention that guarantees tail call [...]

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Summary of changes: docs/BitCodeFormat.rst | 1 + docs/CodeGenerator.rst | 4 +- docs/LangRef.rst | 17 ++- include/llvm/IR/CallingConv.h | 5 + lib/AsmParser/LLLexer.cpp | 1 + lib/AsmParser/LLParser.cpp | 2 + lib/AsmParser/LLToken.h | 1 + lib/CodeGen/Analysis.cpp | 3 +- lib/IR/AsmWriter.cpp | 1 + lib/Target/X86/X86CallingConv.td | 2 + lib/Target/X86/X86FastISel.cpp | 10 +- lib/Target/X86/X86FrameLowering.cpp | 3 +- lib/Target/X86/X86ISelLowering.cpp | 19 ++-- lib/Target/X86/X86Subtarget.h | 1 + test/CodeGen/X86/musttail-tailcc.ll | 114 +++++++++++++++++++ test/CodeGen/X86/tailcall-tailcc.ll | 155 ++++++++++++++++++++++++++ test/CodeGen/X86/tailcc-calleesave.ll | 19 ++++ test/CodeGen/X86/tailcc-disable-tail-calls.ll | 40 +++++++ test/CodeGen/X86/tailcc-fastcc.ll | 49 ++++++++ test/CodeGen/X86/tailcc-fastisel.ll | 18 +++ test/CodeGen/X86/tailcc-largecode.ll | 71 ++++++++++++ test/CodeGen/X86/tailcc-stackalign.ll | 23 ++++ test/CodeGen/X86/tailcc-structret.ll | 7 ++ test/CodeGen/X86/tailccbyval.ll | 21 ++++ test/CodeGen/X86/tailccbyval64.ll | 42 +++++++ test/CodeGen/X86/tailccfp.ll | 6 + test/CodeGen/X86/tailccfp2.ll | 27 +++++ test/CodeGen/X86/tailccpic1.ll | 16 +++ test/CodeGen/X86/tailccpic2.ll | 15 +++ test/CodeGen/X86/tailccstack64.ll | 28 +++++ utils/vim/syntax/llvm.vim | 1 + 31 files changed, 703 insertions(+), 19 deletions(-) create mode 100644 test/CodeGen/X86/musttail-tailcc.ll create mode 100644 test/CodeGen/X86/tailcall-tailcc.ll create mode 100644 test/CodeGen/X86/tailcc-calleesave.ll create mode 100644 test/CodeGen/X86/tailcc-disable-tail-calls.ll create mode 100644 test/CodeGen/X86/tailcc-fastcc.ll create mode 100644 test/CodeGen/X86/tailcc-fastisel.ll create mode 100644 test/CodeGen/X86/tailcc-largecode.ll create mode 100644 test/CodeGen/X86/tailcc-stackalign.ll create mode 100644 test/CodeGen/X86/tailcc-structret.ll create mode 100644 test/CodeGen/X86/tailccbyval.ll create mode 100644 test/CodeGen/X86/tailccbyval64.ll create mode 100644 test/CodeGen/X86/tailccfp.ll create mode 100644 test/CodeGen/X86/tailccfp2.ll create mode 100644 test/CodeGen/X86/tailccpic1.ll create mode 100644 test/CodeGen/X86/tailccpic2.ll create mode 100644 test/CodeGen/X86/tailccstack64.ll