[PATCH] D57962: [DebugInfo] PR40628: Don't salvage load operations

[Adrian Prantl via Phabricator via llvm-commits]

aprantl added a comment.

> This patch disallows load insts from being salvaged. The reason why is PR40628 [0] -- LLVM is unable to determine where the validity of a debug expression containing DW_OP_deref ceases (i.e., where a store overwrites the intended data).

Would it be feasible to inject a dbg_value(undef) at the end of the basic block or before the next store, whichever is earlier, instead?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D57962/new/

https://reviews.llvm.org/D57962