[PATCH] D14181: Update the discriminator assignment algorithm.

[Dehao Chen via llvm-commits]

danielcdh created this revision.
danielcdh added reviewers: dnovillo, davidxl.
danielcdh added a subscriber: llvm-commits.

* If a scope has already been assigned a discriminator, do not reassign a nested discriminator for it.
* If the file and line both match, even if the column does not match, we should assign a new discriminator for the stmt.

http://reviews.llvm.org/D14181

Files:
  lib/Transforms/Utils/AddDiscriminators.cpp
  test/Transforms/AddDiscriminators/oneline.ll

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