[PATCH] D130519: [clang][dataflow] Add explicit "AST" nodes for implications and iff

[Gábor Horváth via Phabricator via cfe-commits]

xazax.hun added inline comments.


================
Comment at: clang/lib/Analysis/FlowSensitive/WatchedLiteralsSolver.cpp:332
+
+      if (LeftSubVar == RightSubVar) {
+        // `X <=> (A <=> A)` is equvalent to `X` which is already in
----------------
xazax.hun wrote:
> I wonder why this simplification is done here only for `BiconditionalValue`. Other operations seem to not do these sorts of simplifications. Also, when would we take this branch? `getOrCreateIff` has a special case when both operands are the same. 
Oh, looking at the other patch I see it mentioning desugaring. So can desugaring also introduce `Biconditional`s?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D130519/new/

https://reviews.llvm.org/D130519