[PATCH] D59431: [DebugInfo] Terminate constant-value location-list ranges at the end of basic blocks

[Adrian Prantl via Phabricator via llvm-commits]

aprantl added a comment.

> As documented in comment 8 of the PR, the range that a constant-value DBG_VALUE defines a variable location over does not currently terminate at the end of the basic block the DBG_VALUE is in. Instead, its range is valid across all basic blocks (as finally laid out) until another DBG_VALUE for the variable is seen. This often covers many instructions where the variable didn't actually have a location, and even down code paths where the variable was never assigned the constant value.

Isn't that a symptom of previous passes failing to insert a dbg.value(undef) when they deleted a dbg.value? I'm trying to figure out what a legitimate example for this would look like.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D59431/new/

https://reviews.llvm.org/D59431