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4 Commits

Author SHA1 Message Date
Yitzhak Mandelbaum 875117ae7a [clang][dataflow] Remove TestingSupport's dependency on gtest 
Users outside of the clang repo may use different googletest versions. So, it's
better not to depend on llvm's googletest. This patch removes the dependency by
having `checkDataflow` return an `llvm::Error` instead of calling googletest's
`FAIL` or `ASSERT...` macros.

Differential Revision: https://reviews.llvm.org/D117304
 2022-01-17 15:33:23 +00:00
Yitzhak Mandelbaum 64f7b2d4bf [clang][dataflow] Change `transfer` function to update lattice element in place. 
Currently, the transfer function returns a new lattice element, which forces an
unnecessary copy on processing each CFG statement.

Differential Revision: https://reviews.llvm.org/D116834
 2022-01-10 14:45:30 +00:00
Yitzhak Mandelbaum 8561e15c5b [clang][dataflow] Fix unused-variable warning. 2021-12-16 13:37:17 +00:00
Yitzhak Mandelbaum 8179e1fd51 [clang][dataflow] Add simplistic constant-propagation analysis. 
Adds a very simple constant-propagation analysis for demo and testing purposes.

Differential Revision: https://reviews.llvm.org/D115740
 2021-12-15 19:30:20 +00:00