Summary:
This change makes the asan-coverge (formerly -mllvm -asan-coverge)
accessible via a clang flag.
Companion patch to LLVM is http://reviews.llvm.org/D6152
Alexey Samsonov [Tue, 11 Nov 2014 22:03:54 +0000 (22:03 +0000)]
Bundle conditions checked by UBSan with sanitizer kinds they implement.
Summary:
This change makes CodeGenFunction::EmitCheck() take several
conditions that needs to be checked (all of them need to be true),
together with sanitizer kinds these checks are for. This would allow
to split one call into UBSan runtime into several calls in case
different sanitizer kinds would have different recoverability
settings.
Tests should be fixed accordingly, I'm working on it.
David Blaikie [Tue, 11 Nov 2014 20:44:45 +0000 (20:44 +0000)]
PR16091 continued: Debug Info for member functions with undeduced return types.
So DWARF5 specs out auto deduced return types as DW_TAG_unspecified_type
with DW_AT_name "auto", and GCC implements this somewhat, but it
presents a few problems to do this with Clang.
GCC's implementation only applies to member functions where the auto
return type isn't deduced immediately (ie: member functions of templates
or member functions defined out of line). In the common case of an
inline deduced return type function, GCC emits the DW_AT_type as the
deduced return type.
Currently GDB doesn't seem to behave too well with this debug info - it
treats the return type as 'void', even though the definition of the
function has the correctly deduced return type (I guess it sees the
return type the declaration has, doesn't understand it, and assumes
void). This means the function's ABI might be broken (non-trivial return
types, etc), etc.
Clang, on the other hand doesn't track this particular case of a
deducable return type that is deduced immediately versus one that is
deduced 'later'. So if we implement the DWARF5 representation, all
deducible return type functions would get adverse GDB behavior
(including deduced return type lambda functions, inline deduced return
type functions, etc).
Also, we can't just do this for auto types that are not deduced -
because Clang marks even the declaration's return type as deduced (&
provides the underlying type) once a definition is seen that allows the
deduction. So we have to ignore even deduced types - but we can't do
that for auto variables (because this representation only applies to
function declarations - variables and function definitions need the real
type so the function can be called, etc) so we'd need to add an extra
flag to the type unwrapping/creation code to indicate when we want to
see through deduced types and when we don't. It's also not as simple as
just checking at the top level when building a function type (for one
thing, we reuse the function type building for building function pointer
types which might also have 'auto' in them - but be the type of a
variable instead) because the auto might be arbitrarily deeply nested
("auto &", "auto (*)()", etc...)
So, with all that said, let's do the simple thing that works in existing
debuggers for now and treat these functions the same way we do function
templates and implicit special members: omit them from the member list,
since they can't be correctly called anyway (without knowing the return
type the ABI isn't know and a function call could put the arguments in
the wrong place) so they're not much use to the user.
At some point in the future, when GDB understands the DWARF5
representation better it might be worth plumbing through the extra type
builder handling to avoid looking through AutoType for some callers,
etc...
Patch to warn when logical evaluation of operand evalutes to a true value;
That this is a c-only patch. c++ already has this warning.
This addresses rdar://18716393
This patch fixes a crash after rebuilding call AST of
an __unknown_anytype(...). In this case, we rebuild the
vararg function type specially to convert the call expression
to something that IRGen can handle. However, FunctionDecl
as rebuilt in RebuildUnknownAnyExpr::resolveDecl is bogus and
results in crash when accessing its params later on. This
patch fixes the crash by rebuilding the FunctionDecl to match
its new resolved type. rdar://15297105.
(patch reapplied after lldb issue was fixed in r221660).
Alexey Bataev [Tue, 11 Nov 2014 04:05:39 +0000 (04:05 +0000)]
[OPENMP] Codegen for threadprivate variables
For all threadprivate variables which have constructor/destructor emit call to void __kmpc_threadprivate_register(ident_t * <Current Location>, void *<Original Global Addr>, kmpc_ctor <Constructor>, kmpc_cctor NULL, kmpc_dtor <Destructor>);
In expressions all references to such variables are replaced by calls to void *__kmpc_threadprivate_cached(ident_t *<Current Location>, kmp_int32 <Current Thread Id>, void *<Original Global Addr>, size_t <Size of Data>, void ***<Pointer to autogenerated cache – array of private copies of threadprivate variable>);
Test test/OpenMP/threadprivate_codegen.cpp checks that codegen is correct. Also it checks that codegen is correct after serialization/deserialization and one of passes verifies debug info.
Differential Revision: http://reviews.llvm.org/D4002
Richard Smith [Tue, 11 Nov 2014 03:28:50 +0000 (03:28 +0000)]
Fix parsing of fold-expressions within a cast expression. We parse the
parenthesized expression a bit differently in this case, just in case the
commas have special meaning.
Alexey Samsonov [Tue, 11 Nov 2014 01:26:14 +0000 (01:26 +0000)]
[Sanitizer] Refactor sanitizer options in LangOptions.
Get rid of ugly SanitizerOptions class thrust into LangOptions:
* Make SanitizeAddressFieldPadding a regular language option,
and rely on default behavior to initialize/reset it.
* Make SanitizerBlacklistFile a regular member LangOptions.
* Introduce the helper class "SanitizerSet" to represent the
set of enabled sanitizers and make it a member of LangOptions.
It is exactly the entity we want to cache and modify in CodeGenFunction,
for instance. We'd also be able to reuse SanitizerSet in
CodeGenOptions for storing the set of recoverable sanitizers,
and in the Driver to represent the set of sanitizers
turned on/off by the commandline flags.
[libclang] When initializing an ObjC object via the "[[ClassName alloc] init*]" pattern,
report the 'init*' invocation as non-dynamic via clang_Cursor_isDynamicCall.
Of course it is dynamic at runtime, but for purposes of indexing we can treat as an invocation to ClassName's init*.
Alexey Samsonov [Mon, 10 Nov 2014 22:27:30 +0000 (22:27 +0000)]
Propagate SanitizerKind into CodeGenFunction::EmitCheck() call.
Make sure CodeGenFunction::EmitCheck() knows which sanitizer
it emits check for. Make CheckRecoverableKind enum an
implementation detail and move it away from header.
Currently CheckRecoverableKind is determined by the type of
sanitizer ("unreachable" and "return" are unrecoverable,
"vptr" is always-recoverable, all the rest are recoverable).
This will change in future if we allow to specify which sanitizers
are recoverable, and which are not by -fsanitize-recover= flag.
Ben Langmuir [Mon, 10 Nov 2014 22:13:10 +0000 (22:13 +0000)]
Validate user headers even if -fmodules-validate-once-per-build-session
is enabled. Unlike system headers, we want to be more careful about
modifications to user headers, because it's still easy to edit a header
while you're building.
Tim Northover [Mon, 10 Nov 2014 21:17:23 +0000 (21:17 +0000)]
AArch64: set all processor features from -arch if nothing else present
Darwin's "-arch arm64" option implies full Cyclone CPU, for both architectural
and tuning purposes. So if neither of the explicit options have been given,
forward that on to the proper invocation.
Richard Smith [Mon, 10 Nov 2014 21:10:32 +0000 (21:10 +0000)]
Improve diagnostics if _Noreturn is placed after a function declarator. (This sometimes happens when a macro is used that expands to either the GNU noreturn attribute or _Noreturn.)
Bob Wilson [Mon, 10 Nov 2014 20:01:19 +0000 (20:01 +0000)]
Remove change to set SDKROOT when building compiler-rt on Darwin.
This reverts the runtime library portion of r194168. As of r221621,
the libclang_rt libraries for Darwin build with explicit SDK options
so there is no need to set SDKROOT here.
Bob Wilson [Mon, 10 Nov 2014 17:46:55 +0000 (17:46 +0000)]
Only build iOS runtime libraries when the iOS SDKs are available.
This was already set up for the iOS simulator ASan dylib simulator,
and this change extends that to the other iOS runtime libraries.
This is in preparation for building all those iOS libraries against
the real SDKs instead of the fake SDKs in compiler-rt.
Nico Weber [Mon, 10 Nov 2014 16:30:02 +0000 (16:30 +0000)]
clang-format: [Java] Never treat @interface as annotation.
'@' followed by any keyword can't be an annotation, but @interface is currently
the only combination of '@' and a keyword that's allowed, so limit it to this
case. `@interface Foo` without a leading `public` was misformatted prior to
this patch.
Aaron Ballman [Sat, 8 Nov 2014 17:07:15 +0000 (17:07 +0000)]
Updated the wording for a diagnostic to be more grammatically correct, and use a %select. Also ensure that nested namespace definitions are diagnosed properly. Both changes are motivated by post-commit feedback from r221580.
Richard Smith [Sat, 8 Nov 2014 05:37:34 +0000 (05:37 +0000)]
[c++1z] Implement nested-namespace-definitions.
This allows 'namespace A::B { ... }' as a shorthand for 'namespace A {
namespace B { ... } }'. We already supported this correctly for error recovery;
promote that support to a full implementation.
This is not the right implementation: we do not maintain source fidelity
because we desugar the nested namespace definition in the parser. This is
tricky to avoid, since the definition genuinely does inject one named
entity per level in the namespace name.
Richard Smith [Sat, 8 Nov 2014 05:07:16 +0000 (05:07 +0000)]
[c++1z] N4295: fold-expressions.
This is a new form of expression of the form:
(expr op ... op expr)
where one of the exprs is a parameter pack. It expands into
(expr1 op (expr2onwards op ... op expr))
(and likewise if the pack is on the right). The non-pack operand can be
omitted; in that case, an empty pack gives a fallback value or an error,
depending on the operator.
Ben Langmuir [Sat, 8 Nov 2014 00:34:30 +0000 (00:34 +0000)]
Check module signature when the module has already been loaded
We may need to verify the signature on subsequent imports as well, just
like we verify the size/modtime:
@import A;
@import B; // imports A
@import C; // imports A
[Objective-C Sema]. Issue availability/deprecated warning when
there is a uinque method found when message is sent to receiver
of 'id' type. // rdar://18848183
Tim Northover [Fri, 7 Nov 2014 22:30:50 +0000 (22:30 +0000)]
ARM ABI: simplify decisions on whether args can be expanded.
Homogeneous aggregates on AAPCS_VFP ARM need to be passed *without* being
flattened (e.g. [2 x float] rather than "float, float") for various weird ABI
reasons. However, this isn't the case for anything else; further, we know at
the ABIArgInfo::getDirect callsites whether this flattening is allowed.
So, we can get more unified ARM code, with a simpler Clang, by just using that
knowledge directly.
Alexey Samsonov [Fri, 7 Nov 2014 22:29:38 +0000 (22:29 +0000)]
Introduce a SanitizerKind enum to LangOptions.
Use the bitmask to store the set of enabled sanitizers instead of a
bitfield. On the negative side, it makes syntax for querying the
set of enabled sanitizers a bit more clunky. On the positive side, we
will be able to use SanitizerKind to eventually implement the
new semantics for -fsanitize-recover= flag, that would allow us
to make some sanitizers recoverable, and some non-recoverable.
Samuel Antao [Fri, 7 Nov 2014 17:48:03 +0000 (17:48 +0000)]
Fix clash of gcc toolchains in hexagon driver regression tests.
If clang was configured with a custom gcc toolchain (either by using GCC_INSTALL_PREFIX in cmake or the equivalent configure command), the path to the custom gcc toolchain path takes precedence to the one specified by -ccc-install-dir. This causes several regression tests to fail as they will be using an unexpected path. Adding the switch --gcc-toolchain="" in each test command is not enough as the hexagon toolchain implementation in the driver is not evaluating this argument. This commit modifies the hexagon toolchain to take the --gcc-toolchain="" argument into account when deciding the toolchain path, similarly to what is already done for other targets toolchains. Additionally, the faulty regression tests are modified in order to --gcc-toolchain="" be passed to the commands.
David Majnemer [Fri, 7 Nov 2014 07:26:38 +0000 (07:26 +0000)]
CodeGen, Itanium: Properly dllimport RTTI data
We would blindly assume that RTTI data should have the same linkage as
the vtable because we didn't think the RTTI data was external. This
oversight stemmed because we didn't take dllimport into account.
[X86] Slightly refactor default features for AMD bdver cpus (NFC). Also add missing checks to test for target features.
This patch simplifies how default target features are set for AMD bdver2
and bdver1. In particular, method 'getDefaultFeatures' now implements a
fallthrough from case 'CK_BDVER2' to case 'CK_BDVER1'.
That is because 'bdver2' has the same features available in bdver1 plus
BMI, FMA, F16C and TBM.
This patch also adds missing checks for predefined macros in test
predefined-arch-macros.c. In the case of BTVER2, the test now also checks
for F16C, BMI and PCLMUL. In the case of BDVER3 and BDVER4, the test now
also checks for the presence of FSGSBASE.
Alexey Bataev [Thu, 6 Nov 2014 10:10:50 +0000 (10:10 +0000)]
Fix for exception specification mismatch in explicit instantiation.
According to C++ standard if an exception-specification is specified in an explicit instantiation directive, it shall be compatible with the exception-specifications of other declarations of that function. This patch adds checks for this.
Differential Revision: http://reviews.llvm.org/D5822
Patch for small addition to availability attribute.
This is to accept "NA" in place of vesion number for availability
attribute. Used on introduced=NA to mean unavailable
and deprecated=NA to mean nothing (not deprecated).
rdar://18804883
Reid Kleckner [Wed, 5 Nov 2014 23:14:59 +0000 (23:14 +0000)]
Make it easier to build against a pre-built Clang package with CMake
Installing <prefix>/share/clang/cmake/ClangConfig.cmake makes CMake's
builtin find_package() utility work with Clang. This also allows
downstream consumers of Clang to statically link against libraries like
clangAST and have that pull in dependencies like clangBasic and
LLVMSupport.
See the CMake docs on packages:
http://www.cmake.org/cmake/help/v3.0/manual/cmake-packages.7.html
This patch fixes a crash after rebuilding call AST of
an __unknown_anytype(...). In this case, we rebuild the
vararg function type specially to convert the call expression
to something that IRGen can handle. However, FunctionDecl
as rebuilt in RebuildUnknownAnyExpr::resolveDecl is bogus and
results in crash when accessing its params later on. This
patch fixes the crash by rebuilding the FunctionDecl to match
its new resolved type. rdar://15297105.
John McCall, please review post-commit.
Reid Kleckner [Wed, 5 Nov 2014 20:30:55 +0000 (20:30 +0000)]
cmake: Conditionalize CodeGen's dependency on intrinsics_gen
Custom targets in cmake cannot be exported, and this dependency is only
needed in the combined build to ensure that Intrinsics.gen is created
before compiling CodeGen. In the standalone, all of LLVM is build first.
Frederic Riss [Wed, 5 Nov 2014 19:19:04 +0000 (19:19 +0000)]
[DebugInfo] Do not record artificial global initializer functions in the DeclCache.
When we are generating the global initializer functions, we call
CGDebugInfo::EmitFunctionStart() with a valid decl which is describing
the initialized global variable. Do not update the DeclCache with this
key as it will overwrite the the cached variable DIGlobalVariable with
the newly created artificial DISubprogram.
One could wonder if we should put artificial subprograms in the DIE tree
at all (there are vaild uses for them carrying line information though).
This DefaultIgnore warning under -Wincomplete-module was firing on
any module map files that happened to be parsed (it's only supposed to
fire on headers), and it has been superceded by
-Wnon-modular-include-in-module anyway.
For compatibility, I rewired -Wincomplete-module to imply
-Wnon-modular-include-in-module.
Bob Wilson [Tue, 4 Nov 2014 22:28:48 +0000 (22:28 +0000)]
Use backslashes to escape spaces and other backslashes in -dwarf-debug-flags.
The command line options are specified in a space-separated list that is an
argument to -dwarf-debug-flags, so that breaks if there are spaces in the
options. This feature came from Apple's internal version of GCC, so I went back
to check how llvm-gcc handled this and matched that behavior.
rdar://problem/18775420
Kuba Brecka [Tue, 4 Nov 2014 17:35:17 +0000 (17:35 +0000)]
Use @rpath as LC_ID_DYLIB for ASan dylib on OS X
Change the LC_ID_DYLIB of ASan's dynamic libraries on OS X to be set to "@rpath/libclang_rt.asan_osx_dynamic.dylib" and similarly for iossim. Clang driver then sets the "-rpath" to be the real path to where clang currently has the dylib (because clang uses the relative path to its current executable). This means if you move the compiler or install the binary release, -fsanitize=address will link to the proper library.
[clang-tidy] Move -extra-arg handling to CommonOptionsProvider
Summary:
Handle -extra-arg and -extra-arg-before options in the
CommonOptionsProvider so they can be used in all clang tools. Adjust arguments
in a CompilationDatabase wrapper instead of adding ArgumentsAdjuster to the
tool.
projects / clang / log