[all-commits] [llvm/llvm-project] 8c24f3: [IR][BFloat] Add BFloat IR type

[Ties Stuij via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8c24f33158d81d5f4b0c5d27c2f07396f0f1484b
      https://github.com/llvm/llvm-project/commit/8c24f33158d81d5f4b0c5d27c2f07396f0f1484b
  Author: Ties Stuij <ties.stuij at arm.com>
  Date:   2020-05-15 (Fri, 15 May 2020)

  Changed paths:
    M clang/lib/Sema/SemaOpenMP.cpp
    M llvm/docs/BitCodeFormat.rst
    M llvm/docs/LangRef.rst
    M llvm/include/llvm-c/Core.h
    M llvm/include/llvm/ADT/APFloat.h
    M llvm/include/llvm/Bitcode/LLVMBitCodes.h
    M llvm/include/llvm/IR/Constants.h
    M llvm/include/llvm/IR/DataLayout.h
    M llvm/include/llvm/IR/IRBuilder.h
    M llvm/include/llvm/IR/Type.h
    M llvm/lib/AsmParser/LLLexer.cpp
    M llvm/lib/AsmParser/LLParser.cpp
    M llvm/lib/Bitcode/Reader/BitcodeReader.cpp
    M llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
    M llvm/lib/CodeGen/MIRParser/MILexer.cpp
    M llvm/lib/IR/AsmWriter.cpp
    M llvm/lib/IR/Constants.cpp
    M llvm/lib/IR/Core.cpp
    M llvm/lib/IR/DataLayout.cpp
    M llvm/lib/IR/Function.cpp
    M llvm/lib/IR/LLVMContextImpl.cpp
    M llvm/lib/IR/LLVMContextImpl.h
    M llvm/lib/IR/Type.cpp
    M llvm/lib/Support/APFloat.cpp
    M llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    A llvm/test/Assembler/bfloat.ll
    M llvm/tools/llvm-c-test/echo.cpp

  Log Message:
  -----------
  [IR][BFloat] Add BFloat IR type

Summary:
The BFloat IR type is introduced to provide support for, initially, the BFloat16
datatype introduced with the Armv8.6 architecture (optional from Armv8.2
onwards). It has an 8-bit exponent and a 7-bit mantissa and behaves like an IEEE
754 floating point IR type.

This is part of a patch series upstreaming Armv8.6 features. Subsequent patches
will upstream intrinsics support and C-lang support for BFloat.

Reviewers: SjoerdMeijer, rjmccall, rsmith, liutianle, RKSimon, craig.topper, jfb, LukeGeeson, sdesmalen, deadalnix, ctetreau

Subscribers: hiraditya, llvm-commits, danielkiss, arphaman, kristof.beyls, dexonsmith

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78190