[all-commits] [llvm/llvm-project] 42732d: [InstCombine] Fix constant-folding of overflowing ...

[LemonBoy via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 42732d33cc7f11f585517cc86205da8bcc38fa4e
      https://github.com/llvm/llvm-project/commit/42732d33cc7f11f585517cc86205da8bcc38fa4e
  Author: LemonBoy <thatlemon at gmail.com>
  Date:   2020-11-09 (Mon, 09 Nov 2020)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
    M llvm/test/Transforms/InstCombine/with_overflow.ll

  Log Message:
  -----------
  [InstCombine] Fix constant-folding of overflowing arithmetic ops on vectors

Feeding vector values to `InstCombiner::OptimizeOverflowCheck` produces a scalar boolean flag if it proves the overflow check can be eliminated.
This causes `InstCombiner::CreateOverflowTuple` to crash as it correctly expects a vector of i1 values instead.

Reviewed By: lebedev.ri

Differential Revision: https://reviews.llvm.org/D89628