[all-commits] [llvm/llvm-project] 48f5a3: [IR] Add vscale_range IR function attribute

[Bradley Smith via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 48f5a392cb73d99a58f01448926f6964ab5b0d0a
      https://github.com/llvm/llvm-project/commit/48f5a392cb73d99a58f01448926f6964ab5b0d0a
  Author: Bradley Smith <bradley.smith at arm.com>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M clang/lib/CodeGen/CodeGenFunction.cpp
    A clang/test/CodeGen/arm-sve-vector-bits-vscale-range.c
    M llvm/docs/BitCodeFormat.rst
    M llvm/docs/LangRef.rst
    M llvm/include/llvm/Bitcode/LLVMBitCodes.h
    M llvm/include/llvm/IR/Attributes.h
    M llvm/include/llvm/IR/Attributes.td
    M llvm/lib/AsmParser/LLLexer.cpp
    M llvm/lib/AsmParser/LLParser.cpp
    M llvm/lib/AsmParser/LLParser.h
    M llvm/lib/AsmParser/LLToken.h
    M llvm/lib/Bitcode/Reader/BitcodeReader.cpp
    M llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
    M llvm/lib/IR/AttributeImpl.h
    M llvm/lib/IR/Attributes.cpp
    M llvm/lib/IR/Verifier.cpp
    M llvm/lib/Transforms/IPO/ForceFunctionAttrs.cpp
    M llvm/lib/Transforms/Utils/CodeExtractor.cpp
    M llvm/test/Bitcode/attributes.ll
    A llvm/test/Verifier/vscale_range.ll

  Log Message:
  -----------
  [IR] Add vscale_range IR function attribute

This attribute represents the minimum and maximum values vscale can
take. For now this attribute is not hooked up to anything during
codegen, this will be added in the future when such codegen is
considered stable.

Additionally hook up the -msve-vector-bits=<x> clang option to emit this
attribute.

Differential Revision: https://reviews.llvm.org/D98030