tree 7d27b9868757e03083dc4d043e2ca16be70c68ad
parent 6d84a7d997357355108df1719971cf3a9e5523d7
author Michael Kruse <llvm-project@meinersbur.de> 1613015965 -0600
committer Copybara-Service <copybara-worker@google.com> 1613736303 -0800

[Polly] Hide Simplify implementation from header. NFC.

Move SimplifiyVisitor from Simplify.h to Simplify.cpp. It is not
relevant for applying the pass in either the NewPM or the legacyPM.
Rename it to SimplifyImpl to account for that.

This is possible due its state not being necessary to be preserved
between runs and thefore SimplifyImpl not needed to be held in the
pass object. Instead, SimplifyImpl is only instatiated for the
current Scop. In the NewPM as a function-local variable, and in the
legacy PM inside a llvm::Optional object because the state must be
preserved between the printScop (invoked by opt -analyze) and the most
recent runOnScop calls.

GitOrigin-RevId: 23753c6088873f01fd32c6f3e3bd03ec7c2f8588