Commit Graph

61 Commits

Author SHA1 Message Date
Stanislav Gatev 7ea103de14 [clang][dataflow] Add support for global storage values
This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: ymandel, xazax.hun

Differential Revision: https://reviews.llvm.org/D120149
2022-02-23 08:27:58 +00:00
Stanislav Gatev 6b8800dfb5 [clang][dataflow] Enable comparison of distinct values in Environment
Make specializations of `DataflowAnalysis` extendable with domain-specific
logic for comparing distinct values when comparing environments.

This includes a breaking change to the `runDataflowAnalysis` interface
as the return type is now `llvm::Expected<...>`.

This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: ymandel, xazax.hun

Differential Revision: https://reviews.llvm.org/D118596
2022-02-01 15:25:59 +00:00
Stanislav Gatev 56cc697323 [clang][dataflow] Merge distinct pointer values in Environment::join
This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: ymandel, xazax.hun

Differential Revision: https://reviews.llvm.org/D118480
2022-01-29 16:33:15 +00:00
Stanislav Gatev d3597ec0aa [clang][dataflow] Enable merging distinct values in Environment::join
Make specializations of `DataflowAnalysis` extendable with domain-specific
logic for merging distinct values when joining environments. This could be
a strict lattice join or a more general widening operation.

This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: xazax.hun

Differential Revision: https://reviews.llvm.org/D118038
2022-01-26 11:40:51 +00:00
Stanislav Gatev 188d28f73c [clang][dataflow] Assign aggregate storage locations to union stmts
This patch ensures that the dataflow analysis framework does not crash
when it encounters access to members of union types.

This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: xazax.hun

Differential Revision: https://reviews.llvm.org/D118226
2022-01-26 10:36:49 +00:00
Stanislav Gatev c95cb4de1b [clang][dataflow] Intersect ExprToLoc when joining environments
This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: xazax.hun

Differential Revision: https://reviews.llvm.org/D117754
2022-01-20 14:30:17 +00:00
Stanislav Gatev 782eced561 [clang][dataflow] Replace initValueInStorageLocation with createValue
Since Environment's setValue method already does part of the work that
initValueInStorageLocation does, we can factor out a new createValue
method to reduce the duplication.

This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: ymandel, xazax.hun

Differential Revision: https://reviews.llvm.org/D117493
2022-01-18 07:09:35 +00:00
Stanislav Gatev 7d941d6d21 [clang][dataflow] Add transfer functions for constructors
This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: ymandel, xazax.hun

Differential Revision: https://reviews.llvm.org/D117218
2022-01-14 14:58:01 +00:00
Stanislav Gatev 99f7d55eee [clang][dataflow] Add transfer functions for data members and this pointers
This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: ymandel, xazax.hun

Differential Revision: https://reviews.llvm.org/D117012
2022-01-12 07:38:26 +00:00
Stanislav Gatev e7481f6ee5 [clang][dataflow] Add transfer functions for assignment
This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Differential Revision: https://reviews.llvm.org/D116596
2022-01-10 19:35:50 +00:00
Stanislav Gatev af7bc39ba1 [clang][dataflow] Add transfer function for VarDecl statements
This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: xazax.hun

Differential Revision: https://reviews.llvm.org/D116368
2022-01-04 09:16:01 +00:00