Daniel Dunbar [Fri, 18 Dec 2009 18:42:37 +0000 (18:42 +0000)]
ARM: Fix predefines (__ARM_ARCH_..., __REGISTER_PREFIX).
- This should be done leveraging the backend, but I'm a little refactored
out. I'll fix it one day, I promise.
Torok Edwin [Fri, 18 Dec 2009 17:29:14 +0000 (17:29 +0000)]
Move the 4.4.2 c++ include search to the top, otherwise it was picking the 4.1.3
dirs on my system. Which is wrong, since it was missing the x86_64-pc-linux-gnu
suffix.
Douglas Gregor [Fri, 18 Dec 2009 16:20:58 +0000 (16:20 +0000)]
Change clang_codeComplete API to return the results in a structure on
the heap, so that clients are not forced to copy the results during
the initial iteration. A separate clang_disposeCodeCompleteResults
function frees the returned results.
Ken Dyck [Fri, 18 Dec 2009 15:55:54 +0000 (15:55 +0000)]
Change the return type of ASTContext::getTypeSizeInChars() from uint64_t to the
new opaque value type, CharUnits. This will help us avoid accidentally mixing
quantities that are in bit and character units.
Ken Dyck [Fri, 18 Dec 2009 15:24:05 +0000 (15:24 +0000)]
Rename getByteSize() and getTypeSizeInBytes() in ASTContext to getCharWidth()
and getTypeSizeInChars() to reflect their basis in character type units, not
that of a possibly independent architecture-specific byte.
John McCall [Fri, 18 Dec 2009 10:48:10 +0000 (10:48 +0000)]
Look through using decls when checking whether a name is an acceptable
nested-name specifier name.
I accidentally checked in the test case for this in the last commit ---
fortunately, that refactor was inspired by having debugged this problem already,
so I can fix the bug quick (though probably not fast enough for the buildbots).
John McCall [Fri, 18 Dec 2009 10:40:03 +0000 (10:40 +0000)]
Pull Sema::isAcceptableLookupResult into SemaLookup. Extract the criteria into
different functions and pick the function at lookup initialization time.
In theory we could actually divide the criteria functions into N different
functions for the N cases, but it's so not worth it.
Among other things, lets us invoke LookupQualifiedName without recomputing
IDNS info every time.
Do some refactoring in SemaDecl to avoid an awkward special case in LQN
that was only necessary for redeclaration testing for anonymous structs/unions ---
which could be done more efficiently with a scoped lookup anyway.
Douglas Gregor [Fri, 18 Dec 2009 05:02:21 +0000 (05:02 +0000)]
Switch the initialization required by return statements over to the
new InitializationSequence. This fixes some bugs (e.g., PR5808),
changed some diagnostics, and caused more churn than expected. What's
new:
- InitializationSequence now has a "C conversion sequence" category
and step kind, which falls back to
- Changed the diagnostics for returns to always have the result type
of the function first and the type of the expression second.
CheckSingleAssignmentConstraints to peform checking in C.
- Improved ASTs for initialization of return values. The ASTs now
capture all of the temporaries we need to create, but
intentionally do not bind the tempoary that is actually returned,
so that it won't get destroyed twice.
- Make sure to perform an (elidable!) copy of the class object that
is returned from a class.
- Fix copy elision in CodeGen to properly see through the
subexpressions that occur with elidable copies.
- Give "new" its own entity kind; as with return values and thrown
objects, we don't bind the expression so we don't call a
destructor for it.
Note that, with this patch, I've broken returning move-only types in
C++0x. We'll fix it later, when we tackle NRVO.
Daniel Dunbar [Fri, 18 Dec 2009 02:43:17 +0000 (02:43 +0000)]
Add -dwarf-debug-flags, which provides a way to embed the cc1 level options used
to compile a translation unit into the debug info for that file.
- Used by parts of Darwin build process to check compiler flags, etc.
- <rdar://problem/7256886> clang does not emit AT_APPLE_flags
Sean Callanan [Fri, 18 Dec 2009 00:04:09 +0000 (00:04 +0000)]
Testcase fixes to reflect instruction table changes in the LLVM backend
(http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20091214/092780.html)
The instruction fixes were checked and approved by Chris Lattner, but
these testcase fixes are mine; please yell at me if there are any
problems with either.
John McCall [Thu, 17 Dec 2009 23:21:11 +0000 (23:21 +0000)]
Patch over yet more problems with friend declarations which were provoking
problems on LLVM-Code-Syntax. This proved remarkably easy to "fix" once
I settled on how I was going to approach it.
Ted Kremenek [Thu, 17 Dec 2009 20:06:29 +0000 (20:06 +0000)]
Convert GRExprEngine::VisitCallExpr() to use a worklist instead of recursion to evaluate the arguments of a CallExpr. This simplifies the logic and makes it easier to read. (it also avoids any issues with blowing out the stack if the CallExpr had a ridiculous number of arguments)
Chris Lattner [Thu, 17 Dec 2009 05:29:40 +0000 (05:29 +0000)]
reimplement r90860, fixing a couple of problems:
1. Don't make a copy of LangOptions every time a lexer is created.
2. Don't make CharInfo global mutable state.
3. Fix the implementation to properly treat ^Z as EOF instead of as
horizontal whitespace, which matches the semantic implemented by VC++.
Douglas Gregor [Wed, 16 Dec 2009 18:50:27 +0000 (18:50 +0000)]
When value-initializing a class with no user-defined constructors but
with a non-trivial default constructor, zero-initialize the storage
and then call the default constructor. Fixes PR5800.
Nuno Lopes [Wed, 16 Dec 2009 16:59:22 +0000 (16:59 +0000)]
implement PR5654: add -fassume-sane-operator-new, which is enabled by default, and adds the malloc attribute to the global function new() and to the overloaded new operators.
feel free to chage the name to this lengthy argument
John McCall [Wed, 16 Dec 2009 12:17:52 +0000 (12:17 +0000)]
Shift things around so that it's easier to recover from a missing
function in a C++ call using an arbitrary call-expression type.
Actually exploit this to fix the recovery implemented earlier.
Zhongxing Xu [Wed, 16 Dec 2009 11:27:52 +0000 (11:27 +0000)]
Add a new kind of region: CXXObjectRegion. Currently it has only one
attribute: the object type.
Add initial support for visiting CXXThisExpr.
Fix a bunch of 80-col violations.
John McCall [Wed, 16 Dec 2009 08:11:27 +0000 (08:11 +0000)]
Introduce a centralized routine in Sema for diagnosing failed lookups (when
used as expressions). In dependent contexts, try to recover by doing a lookup
in previously-dependent base classes. We get better diagnostics out, but
unfortunately the recovery fails: we need to turn it into a method call
expression, not a bare call expression. Thus this is still a WIP.
Douglas Gregor [Wed, 16 Dec 2009 06:35:08 +0000 (06:35 +0000)]
Eliminate Sema::CheckValueInitialization; its callers now use
InitializationSequence to perform the actual initialization.
Also, introduced the notion of a tree of initialized entities, so that
we can know where an initialization began when dealing with nested
initializations (as occur when performing list initialization). This
will, eventually, be useful for producing better diagnostics when list
initialization fails, because we can show the path from the top-level
object being initialized down to the actual subobject where
initialization failed.
Eli Friedman [Wed, 16 Dec 2009 06:28:21 +0000 (06:28 +0000)]
Add abort() as a builtin. This has two effects: one, we warn for incorrect
declarations of abort(), and two, we mark it noreturn. Missing the latter
shows up in one of the "embarassing" tests (from the thread on llvmdev
"detailed comparison of generated code size for LLVM and other compilers").
Ted Kremenek [Wed, 16 Dec 2009 03:18:58 +0000 (03:18 +0000)]
Add (initial?) static analyzer support for handling C++ references.
This change was a lot bigger than I originally anticipated; among
other things it requires us storing more information in the CFG to
record what block-level expressions need to be evaluated as lvalues.
The big change is that CFGBlocks no longer contain Stmt*'s by
CFGElements. Currently CFGElements just wrap Stmt*, but they also
store a bit indicating whether the block-level expression should be
evalauted as an lvalue. DeclStmts involving the initialization of a
reference require us treating the initialization expression as an
lvalue, even though that information isn't recorded in the AST.
Conceptually this change isn't that complicated, but it required
bubbling up the data through the CFGBuilder, to GRCoreEngine, and
eventually to GRExprEngine.
The addition of CFGElement is also useful for when we want to handle
more control-flow constructs or other data we want to keep in the CFG
that isn't represented well with just a block of statements.
In GRExprEngine, this patch introduces logic for evaluating the
lvalues of references, which currently retrieves the internal "pointer
value" that the reference represents. EvalLoad does a two stage load
to catch null dereferences involving an invalid reference (although
this could possibly be caught earlier during the initialization of a
reference).
Symbols are currently symbolicated using the reference type, instead
of a pointer type, and special handling is required creating
ElementRegions that layer on SymbolicRegions (see the changes to
RegionStoreManager).
Along the way, the DeadStoresChecker also silences warnings involving
dead stores to references. This was the original change I introduced
(which I wrote test cases for) that I realized caused GRExprEngine to
crash.
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