[all-commits] [llvm/llvm-project] 6544d9: [flang] Fix vector cshift runtime with non zero lo...

[jeanPerier via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6544d9a4a098c24ebafe2856259f927af8f211ec
      https://github.com/llvm/llvm-project/commit/6544d9a4a098c24ebafe2856259f927af8f211ec
  Author: Jean Perier <jperier at nvidia.com>
  Date:   2021-11-12 (Fri, 12 Nov 2021)

  Changed paths:
    M flang/runtime/transformational.cpp
    M flang/unittests/Runtime/Transformational.cpp

  Log Message:
  -----------
  [flang] Fix vector cshift runtime with non zero lower bounds

The source index should not be compared to zero after applying the
shift with the modulo, it must be compared to the lower bound.
Otherwise, the extent is not added in case it should and the computed
source index may be less than the lower bound, causing invalid results.

Differential Revision: https://reviews.llvm.org/D113659