Commit Graph

19 Commits

Author SHA1 Message Date
David Blaikie 0f2ae78980 Revert various template unreachability code I committed accidentally.
r148774, r148775, r148776, r148777

llvm-svn: 148780
2012-01-24 04:51:48 +00:00
David Blaikie afc6824fa6 More fixes/tests.
llvm-svn: 148777
2012-01-24 04:29:31 +00:00
David Blaikie 13ab2a417d Test for the previous commit/crash.
llvm-svn: 148776
2012-01-24 04:29:27 +00:00
David Blaikie 7e625b67e5 Simple hack to do unreachable code analysis on template patterns.
llvm-svn: 148774
2012-01-24 04:29:18 +00:00
Ted Kremenek 85825aebc9 Further tweak -Wurneachable-code and templates by allowing the warning to run on
explicit template specializations (which represent actual functions somebody wrote).

Along the way, refactor some other code which similarly cares about whether or
not they are looking at a template instantiation.

llvm-svn: 145547
2011-12-01 00:59:17 +00:00
Ted Kremenek 7f770032c7 Don't run -Wunreachable-code on template instantiations. Different instantiations may produce different unreachable code results, and it is very difficult for us to prove that ALL instantiations of a template have specific unreachable code. If we come up with a better solution, then we can revisit this, but this approach will at least greatly reduce the noise of this warning for code that makes use of templates.
llvm-svn: 145520
2011-11-30 21:22:09 +00:00
Ted Kremenek 9e100ea1a8 Reduce -Wuninitialized time by 22% (on sqlite) by removing the recursive AST crawl.
This is accomplished by forcing the needed expressions for -Wuninitialized to always be CFGElements in the CFG.
This allows us to remove a fair amount of the code for -Wuninitialized.

Some fallout:
- AnalysisBasedWarnings.cpp now specifically toggles the CFGBuilder to create a CFG that is suitable for -Wuninitialized.  This
is a layering violation, since the logic for -Wuninitialized is in libAnalysis.  This can be fixed with the proper refactoring.
- Some of the source locations for -Wunreachable-code warnings have shifted.  While not ideal, this is okay because that analysis
already needs some serious reworking.

llvm-svn: 135480
2011-07-19 14:18:48 +00:00
Anders Carlsson 6774b1f1c1 Add -fcxx-exceptions to all tests that use C++ exceptions.
llvm-svn: 126599
2011-02-28 00:40:07 +00:00
Anders Carlsson 479d6f51e3 Pass -fexceptions to all tests that use try/catch/throw.
llvm-svn: 126037
2011-02-19 19:23:03 +00:00
Ted Kremenek f8e4b48b3d Tweak location of diagnostic for -Wunreachable-code
test due to recent changes to the CFG.  The
diagnostic is somewhat in the wrong place, but
the -Wunreachable-code diagnostic needs to be
revamped anyway since most of the diagnostics
in this test case are redundant.

llvm-svn: 121961
2010-12-16 08:22:16 +00:00
Anders Carlsson af7534f084 Get rid of the "functions declared 'noreturn' should have a 'void' result type" warning.
The rationale behind this is that it is normal for callback functions to have a non-void return type
and it should still be possible to mark them noreturn. (JavaScriptCore is a good example of this).

llvm-svn: 112918
2010-09-03 00:25:02 +00:00
Ted Kremenek 50e0105f1c Add warning for functions/blocks that have attribute 'noreturn' but return a non-void result. (<rdar://problem/7562925>)
llvm-svn: 111492
2010-08-19 00:52:13 +00:00
Daniel Dunbar 8452ef0798 tests: Use %clangxx when using driver for C++, in case C++ support is disabled.
llvm-svn: 107153
2010-06-29 16:52:24 +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
Mike Stump 60dbeebee8 Improve unreachable code warnings with respect to dead member and
dead array references.

llvm-svn: 94115
2010-01-21 23:15:53 +00:00
Mike Stump fcd6f94ba7 Improve unreachable code warnings for with respect to dead functional casts in C++.
llvm-svn: 94106
2010-01-21 22:12:18 +00:00
Mike Stump c18c403670 Improve unreachable code warnings for with respect to ? :.
llvm-svn: 94093
2010-01-21 19:44:04 +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