[PATCH] D25153: preprocessor supports `-dI` flag

[David Majnemer via cfe-commits]

majnemer added a comment.

The change from an algorithmic POV looks good but I can't speak to whether or not the approach is sound, I'll leave that to @rsmith.



> majnemer wrote in PrintPreprocessedOutput.cpp:404
> !SearchPath.empty()

This review comment was never addressed.

https://reviews.llvm.org/D25153