Jordan Rose [Mon, 15 Apr 2013 20:39:45 +0000 (20:39 +0000)]
[analyzer] Re-enable using global regions as a symbolic base.
Now that we're invalidating global regions properly, we want to continue
taking advantage of a particular optimization: if all global regions are
invalidated together, we can represent the bindings of each region with
a "derived region value" symbol. Essentially, this lazily links each
global region with a single symbol created at invalidation time, rather
than binding each region with a new symbolic value.
We used to do this, but haven't been for a while; the previous commit
re-enabled this code path, and this handles the fallout.
Jordan Rose [Mon, 15 Apr 2013 20:39:37 +0000 (20:39 +0000)]
[analyzer] Tests: move system functions into system header simulator files.
Some checkers ascribe different behavior to functions declared in system
headers, so when working with standard library functions it's probably best
to always have them in a standard location.
Test change only (no functionality change), but necessary for the next commit.
[PCH/test] Make test/PCH/cxx-typeid.cpp self-contained by including the relevant standard library declarations
instead of depending on a system header inclusion.
Unified token breaking logic for strings and block comments.
Summary:
Both strings and block comments are broken into lines in
breakProtrudingToken. Logic specific for strings or block comments is abstracted
in implementations of the BreakToken interface. Among other goodness, this
change fixes placement of backslashes after a block comment inside a
preprocessor directive (see removed FIXMEs in unit tests).
The code is far from being polished, and some parts of it will be changed for
line comments support.
Rafael Espindola [Mon, 15 Apr 2013 12:49:13 +0000 (12:49 +0000)]
Remove hasExternalLinkageUncached.
It was being used correctly, but it is a very dangerous API to have around.
Instead, move the logic from the filtering to when we are deciding if we should
link two decls.
Rafael Espindola [Mon, 15 Apr 2013 12:38:20 +0000 (12:38 +0000)]
Fix the storage class of method instantiations.
We keep the "as written" storage class, but that is a fuzzy concept for
instantiations. With this patch instantiations of methods of class templates
now get a storage class that is based on the semantics of isStatic(). With this
can simplify isStatic() itself.
Richard Smith [Sun, 14 Apr 2013 23:01:42 +0000 (23:01 +0000)]
CodeGen support for function-local static thread_local variables with
non-constant constructors or non-trivial destructors. Plus bugfixes for
thread_local references bound to temporaries (the temporaries themselves are
lifetime-extended to become thread_local), and the corresponding case for
std::initializer_list.
John McCall [Sun, 14 Apr 2013 08:50:55 +0000 (08:50 +0000)]
Handle incompatible redeclarations of library builtins better.
Invalid redeclarations of valid explicit declarations shouldn't
take the same path as redeclarations of implicit declarations,
and invalid local extern declarations shouldn't foul things up
for everybody else.
Simon Atanasyan [Sun, 14 Apr 2013 08:37:15 +0000 (08:37 +0000)]
[Mips] Remove "single" from the list of valid MIPS float ABI names. Add
two new options –msingle-float and –mdouble-float. These options can be
used simultaneously with float ABI selection options (-mfloat-abi,
-mhard-float, -msoft-float). They mark whether a floating-point
coprocessor supports double-precision operations.
Use an newly introduce ASTContext::getBaseObjCCategoriesAfterInterface() which caches its
results instead of re-calculating the categories multiple times.
Introduce SourceManager::getDecomposedIncludedLoc, that returns the "included/expanded in" decomposed location of the given FileID.
The main benefit is to speed-up SourceManager::isBeforeInTranslationUnit which is common to query
the included/expanded location of the same FileID multiple times.
John McCall [Sat, 13 Apr 2013 00:20:21 +0000 (00:20 +0000)]
Don't replace an existing decl in the scope chains with its
local-extern redeclaration; type refinements, default arguments,
etc. must all be locally scoped.
Richard Smith [Fri, 12 Apr 2013 22:11:07 +0000 (22:11 +0000)]
tl;dr: Teach Clang to work around g++ changing its workaround to glibc's
implementation of C99's attempt to control the C++ standard. *sigh*
The C99 standard says that certain macros in <stdint.h>, such as SIZE_MAX,
should not be defined when the header is included in C++ mode, unless
__STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS are defined. The C++11 standard
says "Thanks, but no thanks" and C11 removed this rule, but various C library
implementations (such as glibc) follow C99 anyway.
g++ prior to 4.8 worked around the C99 / glibc behavior by defining
__STDC_*_MACROS in <cstdint>, which was incorrect, because <stdint.h> is
supposed to provide these macros too. g++ 4.8 works around it by defining
__STDC_*_MACROS in its builtin <stdint.h> header.
This change makes Clang act like g++ 4.8 in this regard: our <stdint.h> now
countermands any attempt by the C library to implement the undesired C99 rules,
by defining the __STDC_*_MACROS first. Unlike g++, we do this even in C++98
mode, since that was the intent of the C++ committee, matches the behavior
required in C11, and matches our built-in implementation of <stdint.h>.
Bob Wilson [Fri, 12 Apr 2013 20:17:20 +0000 (20:17 +0000)]
Define Neon intrinsics as "static inline" to avoid warning. rdar://13108414
We had been defining Neon intrinsics as "static" with always_inline attributes.
If you use them from an extern inline function, you get a warning, e.g.:
static function 'vadd_u8' is used in an inline function with external linkage
This change simply adds the inline keyword to avoid that warning.
Anna Zaks [Fri, 12 Apr 2013 18:40:27 +0000 (18:40 +0000)]
[analyzer] Print a diagnostic note even if the region cannot be printed.
There are few cases where we can track the region, but cannot print the note,
which makes the testing limited. (Though, I’ve tested this manually by making
all regions non-printable.) Even though the applicability is limited now, the enhancement
will be more relevant as we start tracking more regions.
1) Driver/output-file-is-dir.c - Checks for object file which can't
be created for Hexagon since assembler is unavailable.
2) PCH/cxx-typeid.cpp - 'typeinfo' include file is unavailable for Hexagon.
Manuel Klimek [Fri, 12 Apr 2013 14:13:36 +0000 (14:13 +0000)]
Revamps structural error detection / handling.
Previously we'd only detect structural errors on the very first level.
This leads to incorrectly balanced braces not being discovered, and thus
incorrect indentation.
This change fixes the problem by:
- changing the parser to use an error state that can be detected
anywhere inside the productions, for example if we get an eof on
SOME_MACRO({ some block <eof>
- previously we'd never break lines when we discovered a structural
error; now we break even in the case of a structural error if there
are two unwrapped lines within the same line; thus,
void f() { while (true) { g(); y(); } }
will still be re-formatted, even if there's missing braces somewhere
in the file
- still exclude macro definitions from generating structural error;
macro definitions are inbalanced snippets
Daniel Jasper [Fri, 12 Apr 2013 10:12:01 +0000 (10:12 +0000)]
Provide better emacs integration.
The new emacs integration is simpler, does not save the current file
before reformatting and ensures that emacs does not scroll as a result
of formatting.
Also explicitly set the style in clang-format tests to make them more
robust.
Jordan Rose [Fri, 12 Apr 2013 00:44:01 +0000 (00:44 +0000)]
[analyzer] Don't emit extra context arrow after returning from an inlined call.
In this code
int getZero() {
return 0;
}
void test() {
int problem = 1 / getZero(); // expected-warning {{Division by zero}}
}
we generate these arrows:
+-----------------+
| v
int problem = 1 / getZero();
^ |
+---+
where the top one represents the control flow up to the first call, and the
bottom one represents the flow to the division.* It turns out, however, that
we were generating the top arrow twice, as if attempting to "set up context"
after we had already returned from the call. This resulted in poor
highlighting in Xcode.
* Arguably the best location for the division is the '/', but that's a
different problem.
Douglas Gregor [Fri, 12 Apr 2013 00:18:53 +0000 (00:18 +0000)]
<rdar://problem/13615607> Include SDK version information in the module hash.
This is a Darwin-SDK-specific hash criteria used to identify a
particular SDK without having to hash the contents of all of its
headers. If other platforms have such versioned files, we should add
those checks here.
Struct-path aware TBAA: uniformize scalar tag and path tag.
For struct-path aware TBAA, we used to use scalar type node as the scalar tag,
which has an incompatible format with the struct path tag. We now use the same
format: base type, access type and offset.
We also uniformize the scalar type node and the struct type node: name, a list
of pairs (offset + pointer to MDNode). For scalar type, we have a single pair.
These are to make implementaiton of aliasing rules easier.
[ms-cxxabi] Implement member pointer emission and dereferencing
Summary:
Handles all inheritance models for both data and function member
pointers.
Also implements isZeroInitializable() and refactors some of the null
member pointer code.
MSVC supports converting member pointers through virtual bases, which
clang does not (yet?) support. Implementing that extension is covered
by http://llvm.org/15713
Daniel Jasper [Thu, 11 Apr 2013 14:29:13 +0000 (14:29 +0000)]
Change clang-format's affinity for breaking after return types.
Function declarations are now broken with the following preferences:
1) break amongst arguments.
2) break after return type.
3) break after (.
4) break before after nested name specifiers.
Options #2 or #3 are preferred over #1 only if a substantial number of
lines can be saved by that.
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