[all-commits] [llvm/llvm-project] 4133a8: [flang] Accommodate arrays with a zero-extent dime...

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4133a85c867fc0b5d6d53de85063f66562d3cb46
      https://github.com/llvm/llvm-project/commit/4133a85c867fc0b5d6d53de85063f66562d3cb46
  Author: Peter Klausler <pklausler at nvidia.com>
  Date:   2022-03-07 (Mon, 07 Mar 2022)

  Changed paths:
    M flang/lib/Evaluate/constant.cpp
    M flang/lib/Evaluate/fold-implementation.h
    M flang/lib/Evaluate/fold-integer.cpp
    M flang/test/Evaluate/fold-findloc.f90

  Log Message:
  -----------
  [flang] Accommodate arrays with a zero-extent dimension in location folding

The index incrementation code used for FINDLOC, MAXLOC, and MINLOC folding
would crash if the array had a zero extent on the dimension selected with
a DIM= argument since the subscript passed to IncrementSubscripts would
have a value less than the lower bound.  Fix, and add tests.

Differential Revision: https://reviews.llvm.org/D121125