Commit Graph

10 Commits

Author SHA1 Message Date
Tom Care 925501c548 Removed IdempotentOperationChecker from default analysis and returned back to a flag (-analyzer-check-idempotent-operations)
- Added IdempotentOperationChecker to experimental analyses for testing purposes
- Updated test cases to explictly call the checker

llvm-svn: 110482
2010-08-06 22:23:07 +00:00
Ted Kremenek 4a2b237967 Add -cc1 option '-unoptimized-cfg' to toggle using a CFG (for static analysis) that doesn't prune CFG edges.
llvm-svn: 110087
2010-08-03 00:09:51 +00:00
Zhongxing Xu 84f65e0692 Reapply r108617.
llvm-svn: 108668
2010-07-19 01:31:21 +00:00
Benjamin Kramer e2e031ed6f Revert r108617, it broke the build.
llvm-svn: 108621
2010-07-17 13:51:58 +00:00
Zhongxing Xu 4ca4a999b1 Prepare the analyzer for the callee in another translation unit:
Let AnalysisContext contain a TranslationUnit.
  Let CallEnter refer to an AnalysisContext instead of a FunctionDecl.

llvm-svn: 108617
2010-07-17 11:12:42 +00:00
Tom Care 826e6b4023 Improved false positive rate for the idempotent operations checker and moved it into the default path-sensitive analysis options.
- Added checks for static local variables, self assigned parameters, and truncating/extending self assignments
- Removed command line option (now default with --analyze)
- Updated test cases to pass with idempotent operation warnings

llvm-svn: 108550
2010-07-16 20:41:41 +00:00
Argyrios Kyrtzidis 36ea322579 Introduce Decl::hasBody() and FunctionDecl::hasBody() and use them instead of getBody() when we are just checking the existence of a body, to avoid de-serialization of the body from PCH.
Makes de-serialization of the function body even more "lazier".

llvm-svn: 107768
2010-07-07 11:31:19 +00:00
Tom Care 3ff08a8e76 Added a path-sensitive idempotent operation checker (-analyzer-idempotent-operation). Finds idempotent and/or tautological operations in a path sensitive context, flagging operations that have no effect or a predictable effect.
Example:
{
int a = 1;
int b = 5;
int c = b / a; // a is 1 on all paths
}

- New IdempotentOperationChecker class
- Moved recursive Stmt functions in r107675 to IdempotentOperationChecker
- Minor refactoring of SVal to allow checking for any integer
- Added command line option for check
- Added basic test cases

llvm-svn: 107706
2010-07-06 21:43:29 +00:00
Ted Kremenek 76abf19ea6 Fix -analyze-display-progress (once again), this time with an additional regression test.
llvm-svn: 106883
2010-06-25 20:59:24 +00:00
Daniel Dunbar c1b1729b66 Break Frontend's dependency on Rewrite, Checker and CodeGen in shared library configuration
Currently, all AST consumers are located in the Frontend library,
meaning that in a shared library configuration, Frontend has a
dependency on Rewrite, Checker and CodeGen.  This is suboptimal for
clients which only wish to make use of the frontend.  CodeGen in
particular introduces a large number of unwanted dependencies.

This patch breaks the dependency by moving all AST consumers with
dependencies on Rewrite, Checker and/or CodeGen to their respective
libraries.  The patch therefore introduces dependencies in the other
direction (i.e. from Rewrite, Checker and CodeGen to Frontend).

After applying this patch, Clang builds correctly using CMake and
shared libraries ("cmake -DBUILD_SHARED_LIBS=ON").

N.B. This patch includes file renames which are indicated in the
patch body.

Changes in this revision of the patch:
 - Fixed some copy-paste mistakes in the header files
 - Modified certain aspects of the coding to comply with the LLVM
   Coding Standards

llvm-svn: 106010
2010-06-15 17:48:49 +00:00