8b99b8a782
In preparation for adding generation of destructors for objects with automatic storage added:
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- LocalScope class with iterator used to pointing into it,
- fat doxygen comment for LocalScope indended usage,
- BlockScopePosPair class used for storing jump targets/sources (for: goto, break, continue), that replaces raw CFGBlock pointer used earlier for this purpose.
llvm-svn: 114790
2010-09-25 11:05:21 +00:00
c0ca7316bc
Added:
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- definitions of interfaces for CFGInitializer and CFGAutomaticObjDtor,
- support for above classes to print_elem function (renamed print_stmt),
- support for VarDecls in StmtPrinterHelper.
llvm-svn: 114403
2010-09-21 05:58:15 +00:00
d38fb8466c
Tidy up.
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llvm-svn: 114062
2010-09-16 03:28:18 +00:00
2cd7a78c76
Introduce new CFGElement hierarchy to support C++ CFG, based on Marcin's patch
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and discussions with Ted and Jordy.
llvm-svn: 114056
2010-09-16 01:25:47 +00:00
7b31a61d10
Relax assertion in CFG builder when processing ForStmts. This fixes an assertion failure
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on code containing GNU statement expressions reported in PR 8141.
llvm-svn: 113953
2010-09-15 07:01:20 +00:00
e97b1ebef1
Add CFG::BuildOptions class to pass in CFG builder options under on parameter. Patch by Marcin Świderski!
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llvm-svn: 113898
2010-09-14 23:41:16 +00:00
8abff774aa
Fix CFGBuilder crash reported in PR 8141.
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llvm-svn: 113826
2010-09-14 01:13:32 +00:00
09476212de
Revert "CMake: Update to use standard CMake dependency tracking facilities instead"
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This reverts commit r113631
Conflicts:
CMakeLists.txt
lib/CodeGen/CMakeLists.txt
llvm-svn: 113817
2010-09-13 23:54:41 +00:00
35965b972e
Remove from the CFG the half-implemented support for scoping information. We decided that scope information doesn't belong in the CFG at all, since it is a lexical construct.
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Patch by Marcin Świderski!
llvm-svn: 113798
2010-09-13 22:25:54 +00:00
0881f4a367
CMake: Update to use standard CMake dependency tracking facilities instead
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of whatever we were using before...
llvm-svn: 113631
2010-09-10 21:13:16 +00:00
ed12f1b9f9
Add ObjCAtSynchronizedStmt to the CFG and add GRExprEngine support (PreVisit for checkers).
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llvm-svn: 113572
2010-09-10 03:05:33 +00:00
c9199f522f
Clean up CMake dependencies
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llvm-svn: 113489
2010-09-09 15:44:58 +00:00
f146cd1fa3
Remove stray ';' and convert tabs to spaces.
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llvm-svn: 113466
2010-09-09 02:57:48 +00:00
f2b0a1bfa0
Enhance -Wunreachable-code to not consider the 'default:' branch of a switch statement live if a switch on an enum value has
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explicit 'case:' statements for each enum value.
llvm-svn: 113451
2010-09-09 00:06:10 +00:00
b037185b52
Add 'filtered_pred_iterator' and 'filtered_succ_iterator' to CFGBlock. This allows a client
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to selectively walk successors/predecessors based on commonly used filters. For starters, add
a filter to ignore 'default:' cases for SwitchStmts when all enum values are covered by CaseStmts.
llvm-svn: 113449
2010-09-09 00:06:04 +00:00
33dfc07b00
FinishBlock() is essentially doing nothing except returning '!badCFG'.
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llvm-svn: 113149
2010-09-06 07:32:31 +00:00
b1e10aa670
Simplify CFG construction: bail out early when we have a bad CFG.
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llvm-svn: 113148
2010-09-06 07:04:06 +00:00
0f5d8bc5fc
Improve CFG printing support for CXXOperatorCallExpr and CXXBindTemporaryExpr.
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llvm-svn: 112619
2010-08-31 18:47:37 +00:00
128d04dfe8
Explicitly handle CXXOperatorCallExpr when building CFGs. We should treat it the same as CallExprs.
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Fixes: <rdar://problem/8375510> [Boost] CFGBuilder crash in Boost.Graph
llvm-svn: 112618
2010-08-31 18:47:34 +00:00
79a2788512
Revert my lame attempt at appeasing the CFGBuilder
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llvm-svn: 112580
2010-08-31 05:36:56 +00:00
f5d453d067
Teach the CFGBuilder not do die on CXXBindTemporaryExpr, CXXOperatorCallExpr. Fixes a Boost.Graph crasher.
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llvm-svn: 112578
2010-08-31 05:10:27 +00:00
52ac860d9c
Delete the relaxedLiveness object in the dtor of AnalysisContext.
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llvm-svn: 112380
2010-08-28 18:59:04 +00:00
82bfc86792
Explicitly handle CXXExprWithTemporaries during CFG construction by just visiting the subexpression. While we don't do anything intelligent right now, this obviates a bogus -Wunreahable-code warning reported in PR 6130.
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llvm-svn: 112334
2010-08-28 00:19:02 +00:00
e5aa30c722
Add alternate version of LiveVariables analysis that does not kill liveness at assignments. This 'relaxed' liveness is useful in path sensitive analysis for situations where the resulting extended liveness allows us to find some bugs.
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- Added killAtAssign flag to LiveVariables
- Added relaxed LiveVariables to AnalysisContext with an accessor
llvm-svn: 112306
2010-08-27 22:30:10 +00:00
9a68bccd0c
Add missing null checks in PseudoConstantAnalysis
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llvm-svn: 112100
2010-08-25 22:46:03 +00:00
82b2a1dada
Improved the handling of blocks and block variables in PseudoConstantAnalysis
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- Removed the assumption that __block vars are all non-constant
- Simplified some repetitive code in RunAnalysis
- Added block walking support
- Code/comments cleanup
- Separated out test for block pseudoconstants
llvm-svn: 112098
2010-08-25 22:37:26 +00:00
e302792b61
GCC didn't care for my attempt at API compatibility, so brute-force everything
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to the new constants.
llvm-svn: 112047
2010-08-25 11:45:40 +00:00
5f0c066062
Fix printf format string checking for '%lc' (which expects a wint_t or compatible argument). Fixes PR 7981.
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llvm-svn: 111978
2010-08-24 22:24:51 +00:00
a460311710
Improvements to IdempotentOperationChecker and its use of PseudoConstantAnalysis
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- Added wasReferenced function to PseudoConstantAnalysis to determine if a variable was ever referenced in a function (outside of a self-assignment)
- BlockDeclRefExpr referenced variables are now explicitly added to the non-constant list
- Remove unnecessary ignore of implicit casts
- Generalized parameter self-assign detection to detect deliberate self-assigns of variables to avoid unused variable warnings
- Updated test cases with deliberate self-assignments
- Fixed bug with C++ references and pseudoconstants
- Added test case for C++ references and pseudoconstants
llvm-svn: 111965
2010-08-24 21:09:07 +00:00
e332c3b762
Several small changes to PseudoConstantAnalysis and the way IdempotentOperationChecker uses it.
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- Psuedo -> Pseudo (doh...)
- C++ reference support
- Added pseudoconstant test case for __block vars
- Separated out static local checking from pseudoconstant analysis and generalized to non-local checking
- Added missing test cases for storage false positives
llvm-svn: 111832
2010-08-23 19:51:57 +00:00
04831926ec
Detabify.
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llvm-svn: 111768
2010-08-22 01:00:03 +00:00
b9933f365e
Added psuedo-constant analysis and integrated it into the false positive reduction stage in IdempotentOperationChecker.
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- Renamed IdempotentOperationChecker::isConstant to isConstantOrPseudoConstant to better reflect the function
- Changed IdempotentOperationChecker::PreVisitBinaryOperator to only run 'CanVary' once on undefined assumptions
- Created new PsuedoConstantAnalysis class and added it to AnalysisContext
- Changed IdempotentOperationChecker to exploit the new analysis
- Updated tests with psuedo-constants
- Added check to IdempotentOperationChecker to see if a Decl is const qualified
llvm-svn: 111426
2010-08-18 21:17:24 +00:00
4f2ab5a549
Fix horrible CFG bug caused by a series of NullStmts appearing at the beginning of a do...while loop. This would cause
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the body of the DoStmt to be disconnected from the preceding code.
llvm-svn: 111283
2010-08-17 21:00:06 +00:00
110974dfa4
CFGBuilder: don't create the empty "loop back" block for DoStmts if the loop edge can never be taken.
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llvm-svn: 111282
2010-08-17 20:59:56 +00:00
ec389da6f2
Fix a bug where child statements could not be identified as being in a CFGBlock in CFGStmtMap::getBlock.
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llvm-svn: 110881
2010-08-11 23:36:58 +00:00
8a297e9f27
Remove bonehead redeclaration.
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llvm-svn: 110288
2010-08-05 00:03:46 +00:00
60fa657aa2
Fix CFGBuilder to not blow out the stack when processing deeply nested CaseStmts. Fixes <rdar://problem/8268753>.
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llvm-svn: 110286
2010-08-04 23:54:30 +00:00
0950212b50
Add CFGStmtMap, which defines a mapping from Stmt* to CFGBlock*. The immediate intended use is in the unreachable code analysis.
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llvm-svn: 110230
2010-08-04 18:23:15 +00:00
4a2b237967
Add -cc1 option '-unoptimized-cfg' to toggle using a CFG (for static analysis) that doesn't prune CFG edges.
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llvm-svn: 110087
2010-08-03 00:09:51 +00:00
dc03bd0894
Add 'AnalysisContext::getUnoptimizedCFG()' to allow clients to get access to the original
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CFG without any edges pruned out because of trivially solvable conditions (e.g., 'if (0)').
llvm-svn: 110085
2010-08-02 23:46:59 +00:00
2c35bc1232
Revert r109428 "Hoist argument type checking into CheckFormatHandler. This is prep for scanf format"
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Got errors about ASTContext being undefined with Visual Studio 2010.
llvm-svn: 109491
2010-07-27 04:46:02 +00:00
28ade550f4
Fix namespace polution.
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llvm-svn: 109440
2010-07-26 21:25:24 +00:00
df4472bca0
Hoist argument type checking into CheckFormatHandler. This is prep for scanf format
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string argument type checking.
llvm-svn: 109428
2010-07-26 19:45:54 +00:00
adf644d05e
Make a bunch of new data structures for the new analysis
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engine of the new translation unit. State marshal is there but no real
work is done. End nodes are passed back.
llvm-svn: 109105
2010-07-22 13:52:13 +00:00
4407ea4948
Hookup checking for invalid length modifiers in scanf format strings.
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llvm-svn: 108907
2010-07-20 20:04:47 +00:00
ea28f83a5f
Move 'hasValidLengthModifier' from PrintfFormatSpecifier to FormatSpecifier.
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llvm-svn: 108906
2010-07-20 20:04:42 +00:00
36521956f7
Cleanup whitespace in switch statement. No functionality change.
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llvm-svn: 108905
2010-07-20 20:04:36 +00:00
f03e6d85a1
Add 'ConversionSpecifier' root class in 'analyze_format_string' namespace and
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derived 'PrintfConversionSpecifier' from this class. We will do the same for
'ScanfConversionSpecifier'.
llvm-svn: 108903
2010-07-20 20:04:27 +00:00
348d1499c1
Rename 'UnicodeStrArg' to 'SArg'.
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llvm-svn: 108901
2010-07-20 20:04:15 +00:00
516ef222ba
Rename 'ConsumedSoFarArg' -> 'nArg' and 'OutIntPtrArg' to 'nArg' (scanf and printf checking).
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llvm-svn: 108900
2010-07-20 20:04:10 +00:00
Marcin Swiderski