[all-commits] [llvm/llvm-project] e5d9ab: [Hexagon] Fix insertion point for pointer differen...

[Krzysztof Parzyszek via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e5d9ab08c39aa674def376dcffead2242a097536
      https://github.com/llvm/llvm-project/commit/e5d9ab08c39aa674def376dcffead2242a097536
  Author: Krzysztof Parzyszek <kparzysz at quicinc.com>
  Date:   2022-10-19 (Wed, 19 Oct 2022)

  Changed paths:
    M llvm/lib/Target/Hexagon/HexagonVectorCombine.cpp
    A llvm/test/CodeGen/Hexagon/autohvx/vector-align-terminator.ll

  Log Message:
  -----------
  [Hexagon] Fix insertion point for pointer difference calculation

HVC::calculatePointerDifference inserts temporary instructions for
simplification, and calulation of known bits. These instructions were
inserted at the end of a basic block (after the terminator), which
caused BB->getTerminator() to return nullptr. This, in turn, caused
a crash when a PHI instruction was examined in computeKnownBits.