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Author SHA1 Message Date
Marcin Swiderski 8b99b8a782 In preparation for adding generation of destructors for objects with automatic storage added: 
- 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
Marcin Swiderski c0ca7316bc Added: 
- 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
Zhongxing Xu d38fb8466c Tidy up. 
llvm-svn: 114062
 2010-09-16 03:28:18 +00:00
Zhongxing Xu 2cd7a78c76 Introduce new CFGElement hierarchy to support C++ CFG, based on Marcin's patch 
and discussions with Ted and Jordy.

llvm-svn: 114056
 2010-09-16 01:25:47 +00:00
Ted Kremenek 7b31a61d10 Relax assertion in CFG builder when processing ForStmts. This fixes an assertion failure 
on code containing GNU statement expressions reported in PR 8141.

llvm-svn: 113953
 2010-09-15 07:01:20 +00:00
Ted Kremenek e97b1ebef1 Add CFG::BuildOptions class to pass in CFG builder options under on parameter. Patch by Marcin Świderski! 
llvm-svn: 113898
 2010-09-14 23:41:16 +00:00
Ted Kremenek 8abff774aa Fix CFGBuilder crash reported in PR 8141. 
llvm-svn: 113826
 2010-09-14 01:13:32 +00:00
Ted Kremenek 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. 
Patch by Marcin Świderski!

llvm-svn: 113798
 2010-09-13 22:25:54 +00:00
Ted Kremenek ed12f1b9f9 Add ObjCAtSynchronizedStmt to the CFG and add GRExprEngine support (PreVisit for checkers). 
llvm-svn: 113572
 2010-09-10 03:05:33 +00:00
Ted Kremenek f146cd1fa3 Remove stray ';' and convert tabs to spaces. 
llvm-svn: 113466
 2010-09-09 02:57:48 +00:00
Ted Kremenek b037185b52 Add 'filtered_pred_iterator' and 'filtered_succ_iterator' to CFGBlock. This allows a client 
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
Zhongxing Xu 33dfc07b00 FinishBlock() is essentially doing nothing except returning '!badCFG'. 
llvm-svn: 113149
 2010-09-06 07:32:31 +00:00
Zhongxing Xu b1e10aa670 Simplify CFG construction: bail out early when we have a bad CFG. 
llvm-svn: 113148
 2010-09-06 07:04:06 +00:00
Ted Kremenek 0f5d8bc5fc Improve CFG printing support for CXXOperatorCallExpr and CXXBindTemporaryExpr. 
llvm-svn: 112619
 2010-08-31 18:47:37 +00:00
Ted Kremenek 128d04dfe8 Explicitly handle CXXOperatorCallExpr when building CFGs. We should treat it the same as CallExprs. 
Fixes: <rdar://problem/8375510> [Boost] CFGBuilder crash in Boost.Graph
llvm-svn: 112618
 2010-08-31 18:47:34 +00:00
Douglas Gregor 79a2788512 Revert my lame attempt at appeasing the CFGBuilder 
llvm-svn: 112580
 2010-08-31 05:36:56 +00:00
Douglas Gregor f5d453d067 Teach the CFGBuilder not do die on CXXBindTemporaryExpr, CXXOperatorCallExpr. Fixes a Boost.Graph crasher. 
llvm-svn: 112578
 2010-08-31 05:10:27 +00:00
Ted Kremenek 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. 
llvm-svn: 112334
 2010-08-28 00:19:02 +00:00
John McCall e302792b61 GCC didn't care for my attempt at API compatibility, so brute-force everything 
to the new constants.

llvm-svn: 112047
 2010-08-25 11:45:40 +00:00
Ted Kremenek 4f2ab5a549 Fix horrible CFG bug caused by a series of NullStmts appearing at the beginning of a do...while loop. This would cause 
the body of the DoStmt to be disconnected from the preceding code.

llvm-svn: 111283
 2010-08-17 21:00:06 +00:00
Ted Kremenek 110974dfa4 CFGBuilder: don't create the empty "loop back" block for DoStmts if the loop edge can never be taken. 
llvm-svn: 111282
 2010-08-17 20:59:56 +00:00
Ted Kremenek 60fa657aa2 Fix CFGBuilder to not blow out the stack when processing deeply nested CaseStmts. Fixes <rdar://problem/8268753>. 
llvm-svn: 110286
 2010-08-04 23:54:30 +00:00
Ted Kremenek dc03bd0894 Add 'AnalysisContext::getUnoptimizedCFG()' to allow clients to get access to the original 
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
Zhongxing Xu ea9fcffe03 Make addStmt always add stmt. Delegate other cases to Visit() directly. 
llvm-svn: 105384
 2010-06-03 06:43:23 +00:00
Zhongxing Xu 41cdf585c2 CFG: add all LHS of assingments as lvalue. This improves support for C++ reference. Patch by Jordy. 
llvm-svn: 105383
 2010-06-03 06:23:18 +00:00
Ted Kremenek 304a9537e1 Fix crash in CFG construction for 'break' statements appearing in statement expressions 
within the increment code of a for loop.

llvm-svn: 104375
 2010-05-21 20:30:15 +00:00
Ted Kremenek ecc31c93c2 Don't add a null successor to a CFGBlock when the contents of an @synchronized statement is empty. 
Fixes <rdar://problem/7979430>.

llvm-svn: 103717
 2010-05-13 16:38:08 +00:00
Ted Kremenek bc1416dcad Add null check in CFGBuilder::VisitStmt() to make CFG construction 
more resilient to bad code.

llvm-svn: 102793
 2010-04-30 22:25:53 +00:00
Ted Kremenek 989da5eeff Fix CFG crasher involving statement expressions reported in PR 6938. 
llvm-svn: 102576
 2010-04-29 01:10:26 +00:00
Zhongxing Xu b5e94ac97d Use direct assignment instead of user defined conversion. 
llvm-svn: 101236
 2010-04-14 05:50:04 +00:00
Zhongxing Xu 7e61217d86 CFGBuilder: always add C++ member call expr as block-level expr. 
llvm-svn: 101127
 2010-04-13 09:38:01 +00:00
Ted Kremenek 5868ec6e3d Fix CFG bug where bases of member expressions were not always evaluated in a lvalue context. Fixes <rdar://problem/7813989>. 
llvm-svn: 100966
 2010-04-11 17:02:10 +00:00
Ted Kremenek 66de60376c Fix bug in AddStmtChoice:asLValue() where 'AsLValueNotAlwaysAdd' would not be treated as indicating an lvalue. 
llvm-svn: 100965
 2010-04-11 17:02:04 +00:00
Ted Kremenek d2ba1f9ff0 Sort visitor methods. No functionality change. 
llvm-svn: 100964
 2010-04-11 17:01:59 +00:00
Rafael Espindola c50c27cca8 the big refactoring bits of PR3782. 
This introduces FunctionType::ExtInfo to hold the calling convention and the
noreturn attribute. The next patch will extend it to include the regparm
attribute and fix the bug.

llvm-svn: 99920
 2010-03-30 20:24:48 +00:00
Rafael Espindola 8756268ee5 Be a bit more consistent in using operator-> 
This patch moves some methods from QualType to Type and changes the users to
use -> instead of .

llvm-svn: 99805
 2010-03-29 03:39:46 +00:00
Benjamin Kramer a3b13411fa Simplify code a bit and remove unneeded semicolons. 
llvm-svn: 97654
 2010-03-03 16:28:47 +00:00
Ted Kremenek 5d2bb1b9b3 [CFG] 
After discussion with Zhongxing, don't force the initializer of DeclStmts to be
block-level expressions.

This led to some interesting fallout:

[UninitializedValues]

Always visit the initializer of DeclStmts (do not assume they are block-level expressions).

[BasicStore]

With initializers of DeclStmts no longer block-level expressions, this causes self-referencing initializers (e.g. 'int x = x') to no longer cause the initialized variable to be live before the DeclStmt.  While this is correct, it caused BasicStore::RemoveDeadBindings() to prune off the values of these variables from the initial store (where they are set to uninitialized).  The fix is to back-port some (and only some) of the lazy-binding logic from RegionStore to
BasicStore.  Now the default values of local variables are determined lazily as opposed
to explicitly initialized.

llvm-svn: 97591
 2010-03-02 21:43:54 +00:00
Zhongxing Xu a396e617b5 Always add CallExpr as block-level expression. Inline-based interprocedural 
analysis needs this.

llvm-svn: 97014
 2010-02-24 02:19:28 +00:00
Daniel Dunbar 260918ce5c Revert "Simplify code: Succ is guaranteed to be not NULL.", which turns out to 
not be guaranteed.

llvm-svn: 96782
 2010-02-22 05:58:59 +00:00
Zhongxing Xu d39620c451 Simplify code: Succ is guaranteed to be not NULL. 
llvm-svn: 96772
 2010-02-22 02:59:27 +00:00
Mike Stump cc3a853df7 Improve unreachable code warnings with respect to dead binary and 
unary operators.

llvm-svn: 94084
 2010-01-21 17:21:23 +00:00
Mike Stump 04c6851cd6 Speed up compilation by avoiding generating exceptional edges from 
CallExprs as those edges help cause a n^2 explosion in the number of
destructor calls.  Other consumers, such as static analysis, that
would like to have more a more complete CFG can select the inclusion
of those edges as CFG build time.

This also fixes up the two compilation users of CFGs to be tolerant of
having or not having those edges.  All catch code is assumed be to
live if we didn't generate the exceptional edges for CallExprs.

llvm-svn: 94074
 2010-01-21 15:20:48 +00:00
Mike Stump 6bf1c08e99 Add infrastructure to add base initializers and member initializers to 
the CFG.  WIP.

llvm-svn: 94062
 2010-01-21 02:21:40 +00:00
Mike Stump 845384a938 Wire up the EH context for the catch clauses to the outer EH context. WIP. 
llvm-svn: 93963
 2010-01-20 01:30:58 +00:00
Mike Stump 0bdba6cdd8 Add an exceptional edge from the try terminated block to the outer EH 
context (try or the Exit block) when there isn't a catch (...).

Improve CFG printing for catch (...).

llvm-svn: 93962
 2010-01-20 01:15:34 +00:00
Mike Stump 92244b00c7 Add CFG support for the start and end of scopes and infrastructure for 
implicit destructor calls.  WIP.

llvm-svn: 93922
 2010-01-19 22:00:14 +00:00
Ted Kremenek 60983dc3ad Tighten code and rework indentation of some if() branches (for readability). No functionality change. 
llvm-svn: 93904
 2010-01-19 20:52:05 +00:00
Ted Kremenek 1362b8bbe6 Remove extra space in uses of 'assert()'. 
llvm-svn: 93903
 2010-01-19 20:46:35 +00:00
Ted Kremenek b27378c82f Re-alphabetize cases in switch statement. 
llvm-svn: 93902
 2010-01-19 20:40:33 +00:00