[PATCH] D120510: [clang][dataflow] Add limits to size of modeled data structures in environment.

[Yitzhak Mandelbaum via Phabricator via cfe-commits]

ymandel created this revision.
ymandel added reviewers: sgatev, xazax.hun, gribozavr2.
Herald added subscribers: tschuett, steakhal, rnkovacs.
ymandel requested review of this revision.
Herald added a project: clang.

Adds two new parameters to control the size of data structures modeled in the environment: # of values and depth of data structure.  The environment already prevents creation of recursive data structures, but that was insufficient in practice. Very large structs still ground the analysis to a halt.  These new parameters allow tuning the size more effectively.

In this patch, the parameters are set as internal constants. We leave to a future patch to make these proper model parameters.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D120510

Files:
  clang/include/clang/Analysis/FlowSensitive/DataflowEnvironment.h
  clang/lib/Analysis/FlowSensitive/DataflowEnvironment.cpp

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