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76 Commits

Author SHA1 Message Date
Douglas Gregor
4c95288f64 Don't try to evaluate an expression that is type- or value-dependent while building the CFG 
llvm-svn: 79941
 2009-08-24 21:39:56 +00:00
Benjamin Kramer
89b422c118 Replace cerr with errs(). 
llvm-svn: 79854
 2009-08-23 12:08:50 +00:00
Zhongxing Xu
1a3ec57520 If the 'while' has an empty body, set the body to the continue target block. 
Although this does not make the CFG more correct, it makes the CFG more 
beautiful without multiple roots.

llvm-svn: 79509
 2009-08-20 03:21:49 +00:00
Zhongxing Xu
a778b02e89 If the body of for loop is empty, set its body to the continue target. 
Otherwise we get a wrong CFG.

llvm-svn: 79507
 2009-08-20 02:56:48 +00:00
Mike Stump
8c5d7996e8 Add noreturn as a type attribute, handle printing for them and handle 
calls to noreturn function pointers when CFG building.

llvm-svn: 77089
 2009-07-25 21:26:53 +00:00
Ted Kremenek
963cc31583 Add doxygen comments and simplify expression. 
llvm-svn: 76955
 2009-07-24 06:55:42 +00:00
Ted Kremenek
3075428d16 Introduce a new variant type 'TryResult' to represent the result of 
TryEvaluateBool instead of using a raw 'int'.  This avoids any
confusion of how 'int' converts to bool, and makes the resultant code
easier to read.

Condense a bunch of 'addSuccessor()' calls in 'if ... else' to use the
ternary operator instead.

llvm-svn: 76947
 2009-07-24 04:47:11 +00:00
Mike Stump
773582dbb8 Refactor and push the evaluation as late as possible. 
llvm-svn: 76911
 2009-07-23 23:25:26 +00:00
Mike Stump
8dd1b6bd10 Improve CFG support for C++ throw expressions. 
llvm-svn: 76814
 2009-07-22 22:56:04 +00:00
Ted Kremenek
b1c170e64b Make 'SaveAndRestore' and friends reusable classes in libAnalysis. 
llvm-svn: 76795
 2009-07-22 21:45:16 +00:00
Mike Stump
3557ea840b Wire up CFG improvements for __builtin_choose_expr. 
llvm-svn: 76531
 2009-07-21 01:46:17 +00:00
Mike Stump
8d50b6aeff Wire up CFG improvements for do { } while () when the condition is known. 
llvm-svn: 76530
 2009-07-21 01:27:50 +00:00
Mike Stump
014b3eabd1 Wire up for statement CFG improvements for conditionals that are known. 
llvm-svn: 76529
 2009-07-21 01:12:51 +00:00
Mike Stump
23a443bea7 Wire up CFG improvements for while when the condition is known. 
llvm-svn: 76522
 2009-07-21 00:38:52 +00:00
Mike Stump
0d76d075e4 Add yet more analysis for CFGs involving conditionals that are actually constant. 
llvm-svn: 76500
 2009-07-20 23:24:15 +00:00
Ted Kremenek
0747de6aaa Fix some fallout from CFGBuilder restructuring: all expressions that we explicitly handle have the possibility to be block-level expressions. 
llvm-svn: 76277
 2009-07-18 00:47:21 +00:00
Ted Kremenek
fe9b768aaa Fix possible null dereference in CFG construction. 
llvm-svn: 76261
 2009-07-17 22:57:50 +00:00
Ted Kremenek
93668002c4 Restructure CFG builder to have just one visitor path instead of two. The result 
is an algorithm that is much easier to understand and slightly more efficient.
Thanks to Mike Stump for our discussions on the CFGBuilder and his comments that
helped prompt this long needed cleanup.

llvm-svn: 76250
 2009-07-17 22:18:43 +00:00
Ted Kremenek
2182259f36 Move WalkAST logic for 'ChooseExpr' to 'VisitChooseExpr'. 
llvm-svn: 76205
 2009-07-17 18:20:32 +00:00
Ted Kremenek
51d40b07a0 Move WalkAST logic for 'ConditionalOperator' into 'VisitConditionalOperator'. 
llvm-svn: 76202
 2009-07-17 18:15:54 +00:00
Ted Kremenek
0bcdc981ef Remove stale comments. 
llvm-svn: 76196
 2009-07-17 18:04:55 +00:00
Chris Lattner
c960b3e80c clean up this code, add the fixme back. 
llvm-svn: 76180
 2009-07-17 15:50:19 +00:00
Zhongxing Xu
3c8fa978ad Refactor code into a new CallExpr::getDirectCallee() method. Simplify some 
code with the new method.

llvm-svn: 76164
 2009-07-17 07:29:51 +00:00
Mike Stump
31feda5585 Fixup indentation of rest of switch statement to match llvm coding 
conventions.  Also reflowed comments and removed spaces at end of
lines and fixed up 80 col violations.

llvm-svn: 76140
 2009-07-17 01:31:16 +00:00
Mike Stump
48871a2880 Make noreturn functions alter the CFG. 
llvm-svn: 76133
 2009-07-17 01:04:31 +00:00
Ted Kremenek
6796fbd2e8 Move the source-level CFG from libAST to libAnalysis. 
llvm-svn: 76092
 2009-07-16 18:13:04 +00:00