[PATCH] D126781: [CodeGen] Keep track info of lazy-emitted symbols in ModuleBuilder

[John McCall via Phabricator via cfe-commits]

rjmccall added a comment.

In D126781#3565173 <https://reviews.llvm.org/D126781#3565173>, @junaire wrote:

> I believe that `OldBuilder` is always valid in the normal cases, so
> remove the if condition and replace it with an assertion.

Is `StartModule` not called for the first time we start emitting a module, or do we pointlessly create a CGM and then immediately replace it?


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https://reviews.llvm.org/D126781