[PATCH] D57694: [DebugInfo][DAG] Either salvage dangling debug info or emit Undef DBG_VALUEs

[Stephen Hines via Phabricator via llvm-commits]

srhines added a comment.

This patch appears to generate non-reproducible builds in some cases. I can craft a more minimal test case, but the following link (https://godbolt.org/z/sWucUZ) is what I have been using. If I run Clang multiple times, the output eventually swaps the order of some undef DEBUG_VALUE's. I am just passing "-O1 -g" with that .ii file. It isn't obvious to me yet what is causing this to be unordered/non-deterministic.


Repository:
  rL LLVM

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https://reviews.llvm.org/D57694