[all-commits] [llvm/llvm-project] 0b46f1: [Support] Ensure KnownBits::sextInReg can handle t...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0b46f19a9ecd6215cffb51d19f2403c18b0226f5
      https://github.com/llvm/llvm-project/commit/0b46f19a9ecd6215cffb51d19f2403c18b0226f5
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-01-14 (Thu, 14 Jan 2021)

  Changed paths:
    M llvm/lib/Support/KnownBits.cpp
    M llvm/unittests/Support/KnownBitsTest.cpp

  Log Message:
  -----------
  [Support] Ensure KnownBits::sextInReg can handle the src == dst sext-in-reg case.

This was resulting in assertions inside APInt::zext that we were extending to the same bitwidth.