[all-commits] [llvm/llvm-project] 732461: [SCEV] BuildConstantFromSCEV(): properly handle SC...

[Roman Lebedev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 7324616660fc0995fa8c166e3c392361222d5dbc
      https://github.com/llvm/llvm-project/commit/7324616660fc0995fa8c166e3c392361222d5dbc
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2020-10-13 (Tue, 13 Oct 2020)

  Changed paths:
    M llvm/lib/Analysis/ScalarEvolution.cpp
    M llvm/test/Analysis/ScalarEvolution/ptrtoint-constantexpr-loop.ll

  Log Message:
  -----------
  [SCEV] BuildConstantFromSCEV(): properly handle SCEVZeroExtend from ptr

As being reported in https://reviews.llvm.org/D88806#2326944,
this is pretty much the sibling problem of https://reviews.llvm.org/D88806#2325340,
with root cause being that SCEV now models `ptrtoint` as trunc/zext/self of unknown.

The appropriate (currently crashing) test coverage added.