[PATCH] D103096: [analyzer] Implement cast for ranges of symbolic integers.

[Denys Petrov via Phabricator via cfe-commits]

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Support integral cast for ranges of symbolic integers. Previously we only support integral cast for concrete integers.

Reason about the ranges of `SymbolCast` expressions. Apply truncations, promotions and conversions to get a correct range set using nested types of a `SymbolCast`. Replace `SValBuilder::evalIntegralCast` with `SValBuilder::evalCast`. Remove `SValBuilder::evalIntegralCast` as unnecessary one.

See tests in //symbol-integral-cast.cpp// for examples.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D103096

Files:
  clang/include/clang/StaticAnalyzer/Checkers/SValExplainer.h
  clang/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
  clang/lib/StaticAnalyzer/Checkers/ExprInspectionChecker.cpp
  clang/lib/StaticAnalyzer/Core/ExprEngineC.cpp
  clang/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp
  clang/lib/StaticAnalyzer/Core/SValBuilder.cpp
  clang/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
  clang/test/Analysis/bool-assignment.c
  clang/test/Analysis/constant-folding.c
  clang/test/Analysis/constraint_manager_negate_difference.c
  clang/test/Analysis/explain-svals.cpp
  clang/test/Analysis/expr-inspection.cpp
  clang/test/Analysis/malloc.c
  clang/test/Analysis/std-c-library-functions.c
  clang/test/Analysis/svalbuilder-rearrange-comparisons.c
  clang/test/Analysis/symbol-integral-cast.cpp

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