Jeremy Morse 4a2cb01370 [DebugInfo][InstrRef][NFC] Refactor ahead of further optimisations ...

This patch shuffles some functions around so that some blocks of code can
be reused. In particular,
 * Move the determination of "which blocks are in scope" to its own
   function, as it's non-trivial to solve. Delete the "InScopeBlocks"
   collection too, which nothing reads from.
 * Split transfer emission (i.e., installing DBG_VALUEs into blocks) into
   its own function.
 * Name some useful types.
 * Rename "ScopeToBlocks" to "ScopeToAssignBlocks", as that's what the
   collection contains, blocks where assignments happen.

Differential Revision: https://reviews.llvm.org/D118454

2022-01-31 16:45:53 +00:00

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