Jeremy Morse 4b64138ba4 [DebugInfo][RemoveDIs] Switch some insertion routines to use iterators (#75330) ...

As part of RemoveDIs, we need instruction insertion to be done with
iterators rather than instruction pointers, so that we can communicate
some debug-info facts about the position. This patch is an entirely
mechanical replacement of Instruction * with BasicBlock::iterator, plus
using insertBefore to insert some instructions because we don't have
iterator-taking constructors yet.

Sadly it's not NFC because it causes dbg.value intrinsics / their
DPValue equivalents to shift location.

2023-12-13 14:04:35 +00:00

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