[all-commits] [llvm/llvm-project] ffc05d: [X86][SSE] Add sitofp(shl(sext(x), y)) test case wi...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ffc05d0dbc88b89756d553ff32abefe720d27742
      https://github.com/llvm/llvm-project/commit/ffc05d0dbc88b89756d553ff32abefe720d27742
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-01-13 (Mon, 13 Jan 2020)

  Changed paths:
    M llvm/test/CodeGen/X86/known-signbits-vector.ll

  Log Message:
  -----------
  [X86][SSE] Add sitofp(shl(sext(x),y)) test case with non-uniform shift value

Shows that for non-uniform SHL shifts we fail to determine the minimum number of sign bits remaining (based off the maximum shift amount value)