into their container; we won't find them there. These things are already being
merged when they're added to their primary template's folding set, so this
merging is redundant (and causes us to reject-valid because we think we've
found an odr violation).
llvm-svn: 212788
The relevant portion of C++ standard says [namespace.memdef]p3:
If the name in a friend declaration is neither qualified nor a
template-id and the declaration is a function or an
elaborated-type-specifier, the lookup to determine whether the entity
has been previously declared shall not consider any scopes outside the
innermost enclosing namespace.
MSVC does not implement that rule for types. If there is a type in an
enclosing namespace, they consider an unqualified tag declaration with
the same name to be a redeclaration of the type from another namespace.
Implementing compatibility is a simple matter of disabling our
implementation of this rule for types, which was added in r177473.
Reviewers: rsmith
Differential Revision: http://reviews.llvm.org/D4443
llvm-svn: 212784
This patch flips the default value for -gcolumn-info to be on by
default. I discussed the rationale and provided compile/size data
in:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-June/074290.html
This also updates the documentation and some tests that relied on
the lack of column information. Some tests had column information
in the expected output, but it was wrong (the tsan tests). Others
were using the driver to execute.
llvm-svn: 212781
Teach UBSan vptr checker to ignore technically invalud down-casts on
blacklisted types.
Based on http://reviews.llvm.org/D4407 by Byoungyoung Lee!
llvm-svn: 212770
Originally committed in r211722, this fixed one case of dtor calls being
emitted without locations (this causes problems for debug info if the
call is then inlined), this caught only some of the cases.
Instead of trying to re-enable the location before the cleanup, simply
re-enable the location immediately after the unconditional branches in
question using a scoped device to ensure the no-location state doesn't
leak out arbitrarily.
llvm-svn: 212761
This patch adds support for respecting the ABI and type alignment
of aggregates passed by value. Currently, all aggregates are aligned
at 8 bytes in the parameter save area. This is incorrect for two
reasons:
- Aggregates that need alignment of 16 bytes or more should be aligned
at 16 bytes in the parameter save area. This is implemented by
using an appropriate "byval align" attribute in the IR.
- Aggregates that need alignment beyond 16 bytes need to be dynamically
realigned by the caller. This is implemented by setting the Realign
flag of the ABIArgInfo::getIndirect call.
In addition, when expanding a va_arg call accessing a type that is
aligned at 16 bytes in the argument save area (either one of the
aggregate types as above, or a vector type which is already aligned
at 16 bytes), code needs to align the va_list pointer accordingly.
Reviewed by Hal Finkel.
llvm-svn: 212743
Allow diagnostic checks that originate in included files to be matched without necessarily determining the line number that the diagnostic occurs on. The new syntax replaces the line number with '*'. This extension is limited to diagnostics in included files and may be used where the include file is not part of the test-suite itself.
Expected uses are for diagnostics originating in system headers, or for users who use -verify in testing 3rd-party library code where the location of diagnostics in header files may change from revision to revision and their precise location is not important to the success of the test-case.
llvm-svn: 212735
This patch adds support for passing arguments of non-Altivec vector type
(i.e. defined via attribute ((vector_size (...)))) on powerpc64-linux.
While such types are not mentioned in the formal ABI document, this
patch implements a calling convention compatible with GCC:
- Vectors of size < 16 bytes are passed in a GPR
- Vectors of size > 16 bytes are passed via reference
Note that vector types with a number of elements that is not a power
of 2 are not supported by GCC, so there is no pre-existing ABI to
follow. We choose to pass those (of size < 16) as if widened to the
next power of two, so they might end up in a vector register or
in a GPR. (Sizes > 16 are always passed via reference as well.)
Reviewed by Hal Finkel.
llvm-svn: 212734
Comdat IR references were mistakenly printed for aliases when they
passed through the IR/AsmWriter code.
This makes clang's tests not check for the existance of these wrongly
printed comdat references.
llvm-svn: 212733
This new checker, alpha.core.TestAfterDivZero, catches issues like this:
int sum = ...
int avg = sum / count; // potential division by zero...
if (count == 0) { ... } // ...caught here
Because the analyzer does not necessarily explore /all/ paths through a program,
this check is restricted to only work on zero checks that immediately follow a
division operation (/ % /= %=). This could later be expanded to handle checks
dominated by a division operation but not necessarily in the same CFG block.
Patch by Anders Rönnholm! (with very minor modifications by me)
llvm-svn: 212731
Summary:
* Support the multilib layout used by the mips-img-linux-gnu
* Recognize mips{,64}{,el}-img-linux-gnu as being aliases of mips-img-linux-gnu
* Use the correct dynamic linker for mips-img-linux-gnu
* Make mips32r6/mips64r6 the default CPU for mips-img-linux-gnu
Subscribers: mpf
Differential Revision: http://reviews.llvm.org/D4436
llvm-svn: 212719
Although this is nominally a -W option, we actually handle it in the driver
exactly as an f-group flag that's translated directly to -mllvm.
That means f_Group (and unintuitively, not W_Group) has the semantics we want
to make it behave like a standard warning flag: no automatic forwarding, no
warning for link invocations and compile-only.
Silences diagnostics like:
[691/1545] Linking CXX executable bin/llvm-diff
clang-3.5: warning: argument unused during compilation: '-Wframe-larger-than=2048'
(Hopefully we can move towards handling these in the frontend but that'll
require some infrastructure work.)
llvm-svn: 212670
The sret paramater consumes the register after the implicit 'this'
parameter, as with other calling conventions.
Fixes PR20278, which turned out to be very easy.
llvm-svn: 212669
Turn llvm::SpecialCaseList into a simple class that parses text files in
a specified format and knows nothing about LLVM IR. Move this class into
LLVMSupport library. Implement two users of this class:
* DFSanABIList in DFSan instrumentation pass.
* SanitizerBlacklist in Clang CodeGen library.
The latter will be modified to use actual source-level information from frontend
(source file names) instead of unstable LLVM IR things (LLVM Module identifier).
Remove dependency edge from ClangCodeGen/ClangDriver to LLVMTransformUtils.
No functionality change.
llvm-svn: 212643
gcc supports this behavior and it is pervasively used inside the Linux
kernel.
Note that both gcc and clang will reject code that attempts to do this
in a C++ language mode.
This fixes PR17998.
llvm-svn: 212631
The clang -cc1as options are nearly a strict subset of -cc1. Instead of
duplicating the definitions and documentation, let's go ahead and share the
definitions in a similar way the current handling of combined driver and
frontend flags, eliminating some of the vestigial legacy surrounding the
assembler subcommand.
llvm-svn: 212620
Summary:
This removes the need to pass -mnan=2008 explicitly to be able to compile
the test-suite for MIPS32r6/MIPS64r6.
Differential Revision: http://reviews.llvm.org/D4433
llvm-svn: 212619
Summary:
While debugging another issue, I noticed that Mips currently specifies that the
count leading zero builtins are undefined when the input is zero. The
architecture specifications say that the clz and dclz instructions write 32 or
64 respectively when given zero.
This doesn't fix any bugs that I'm aware of but it may improve optimisation in
some cases.
Differential Revision: http://reviews.llvm.org/D4431
llvm-svn: 212618
Having some kind of weird kernel-assisted ABI for these when the
native instructions are available appears to be (and should be) the
exception; OSs have been gradually opting in for years and the code
was getting silly.
So let LLVM decide whether it's possible/profitable to inline them by
default.
Patch by Phoebe Buckheister.
llvm-svn: 212598
Though not completely identical, make former
IndentFunctionDeclarationAfterType change this flag for backwards
compatibility (it is somewhat close in meaning and better the err'ing on
an unknown config flag).
llvm-svn: 212597
Key changes:
- Correctly (well ...) distinguish function declarations and variable
declarations with ()-initialization.
- Don't indent when breaking function declarations/definitions after the
return type.
- Indent variable declarations and typedefs when breaking after the
type.
This fixes llvm.org/PR17999.
llvm-svn: 212591
This flag is set by most other tools and avoids extra stat() calls. The
frontend will diagnose anyway as it performs the check atomically while opening
files at point of use.
We could probably make Driver::CheckInputsExist default to false and only
enable it in the main 'clang' binary, or even better only perform the checks if
we know the tool is external but that needs more thought.
llvm-svn: 212585
If we want to resolve the remaining FIXMEs here, we probably want to
extend the main lookup mechanism to perform lookup into dependent bases,
but we would have to tread lightly. Adding more name lookup has major
impact on compile time.
If we did extend the main mechanism, we would add a flag to LookupResult
that allows us to find names from dependent base classes where the base
is a specialization of a known template. The final LookupResult would
still return LookupResult::NotFoundInCurrentInstantiation, but it would
have a collection of Decls. If we find a real lookup result, we would
clear the flag and the existing lookup results and begin accumulating
only real lookup results.
We would structure the lookup as a secondary lookup between normal
lookup and typo correction for normal compilation, but for MSVC
compatibility mode, we would always enable this extra lookup into
dependent bases.
llvm-svn: 212566
This merges the two tests into one since there is no real reason to separate
them. It also fixes the test invocation to specify -fms-compatibility without
which we would end up without an Intrin.h header.
llvm-svn: 212563
MSVC appears to perform name lookup into dependent base classes when the
dependent base class has a known primary template. This allows them to
know whether some unqualified ids are types or not, which allows them to
parse more class templates without typename keywords.
We can do the same thing when type name lookup fails, and if we find a
single type decl in one of our dependent base classes, recover as though
the user wrote 'typename MyClass::TypeFromBase'.
This allows us to parse some COM smart pointer classes in wrl/client.h
from the Windows 8 SDK.
Reviewers: rsmith
Differential Revision: http://reviews.llvm.org/D4237
llvm-svn: 212561
Also provide _setjmpex(). r200243 put in _setjmp() and _setjmpex() behind a
comment since jmp_buf wasn't available. r200344 added jmp_buf and put in
_setjmp(), but missed _setjmpex().
llvm-svn: 212557
r184166 added an X86_32 function in the middle of the SystemZ code.
The SystemZ port had been added only a couple of weeks earlier and
the original patch probably predated that.
No behavioral change intended.
llvm-svn: 212524
Protect MMX specific declarations under a __MMX__ guard. This header can be
included on non-x86 architectures (e.g. ARM) which do not support the MMX ISA.
Use the preprocessor to prevent these declarations from being processed.
llvm-svn: 212512
Although the functions are marked as always_inline, the compiler with which they
are used may not honour the extended attributes and emit them as functions. In
such a case, indicate that they should have extern "C" linkage and should not be
mangled in C++ style if used within C++.
llvm-svn: 212511
Of course, such code is horribly broken and will explode on impact.
That said, ATL does it, and we have to support them, at least a little
bit.
Fixes PR20191.
llvm-svn: 212508
All blacklisting logic is now moved to the frontend (Clang).
If a function (or source file it is in) is blacklisted, it doesn't
get sanitize_address attribute and is therefore not instrumented.
If a global variable (or source file it is in) is blacklisted, it is
reported to be blacklisted by the entry in llvm.asan.globals metadata,
and is not modified by the instrumentation.
The latter may lead to certain false positives - not all the globals
created by Clang are described in llvm.asan.globals metadata (e.g,
RTTI descriptors are not), so we may start reporting errors on them
even if "module" they appear in is blacklisted. We assume it's fine
to take such risk:
1) errors on these globals are rare and usually indicate wild memory access
2) we can lazily add descriptors for these globals into llvm.asan.globals
lazily.
llvm-svn: 212505
Now CodeGenFunction is responsible for looking at sanitizer blacklist
(in CodeGenFunction::StartFunction) and turning off instrumentation,
if necessary.
No functionality change.
llvm-svn: 212501
Get rid of cached CodeGenModule::SanOpts, which was used to turn off
sanitizer codegen options if current LLVM Module is blacklisted, and use
plain LangOpts.Sanitize instead.
1) Some codegen decisions (turning TBAA or writable strings on/off)
shouldn't depend on the contents of blacklist.
2) llvm.asan.globals should *always* be created, even if the module
is blacklisted - soon Clang's CodeGen where we read sanitizer
blacklist files, so we should properly report which globals are
blacklisted to the backend.
llvm-svn: 212499
r212427 formalized the message-passing pattern by making these argument
structures const. This commit changes output arguments to get passed by
reference so we can eliminate mutable fields.
llvm-svn: 212497
Assertion failures call abort(), which return an exit code of 3 on
Windows. The 'not' utility has the same check.
Unfortunately, the crash-report.c test requires a shell, so it does not
run for me locally, so I can only test this manually.
There's still more work to be done here: we should generate a batch
script instead of a shell script on Windows.
llvm-svn: 212481
I misidentified the problem and did not test suffifiently. The files had
correctly been removed, but for some reason they still remained in my git
checkout. Not adding the files back to CMakeLists.txt, but rather removing
the stale files was the solution. Sorry for the unnecessary noise.
llvm-svn: 212446
The MS ABI RTTI emission code would choose names for IR types like
%"MSRTTITypeDescriptor\02". This name is undesirable because it
requires escaping; the underlying reason for this is that the name is
unprintable. Fix this by naming it %rtti.TypeDescriptor2.
While here, stop trying to do lookups in the LLVM Module's type table.
Instead, store the IR types in MicrosoftCXXABI. Lookups by name aren't
particularly fast.
llvm-svn: 212439
Let's not expose ABI specific minutia inside of CodeGenModule and Type.
Instead, let's abstract it through CXXABI.
This gets rid of:
CodeGenModule::getCompleteObjectLocator,
CodeGenModule::EmitFundamentalTypeDescriptor{s,},
CodeGenModule::getMSTypeDescriptor,
CodeGenModule::getMSCompleteObjectLocator,
CGCXXABI::shouldRTTIBeUnique,
CGCXXABI::classifyRTTIUniqueness.
CGRTTI was *almost* entirely centered around providing Itanium-style
RTTI information. Instead of providing interfaces that only it
consumes, move it to the ItaniumCXXABI implementation file. This allows
it to have access to Itanium-specific implementation details without
providing useless expansion points for the Microsoft ABI side.
Differential Revision: http://reviews.llvm.org/D4261
llvm-svn: 212435
These two functions initialize the source manager and header search objects and
shouldn't be in InitPreprocessor which is concerned with priming the
preprocessor itself and predefining macros.
llvm-svn: 212434
Consolidate CXUnsavedFile argument handling in API functions to support a wider
cleanup of various file remapping schemes in the frontend.
llvm-svn: 212427
StmtDumper.cpp is called ASTDumper.cpp these days, and usually works well
for new AST nodes without changes. There's now DataRecursiveASTVisitor
in addition to RecursiveASTVisitor, and serialization wasn't mentioned.
llvm-svn: 212426
Give scope a SEHTryScope bit, set that in ParseSEHTry(), and let Sema
walk the scope chain to find the SEHTry parent on __leave statements.
(They are rare enough that it seems better to do the walk instead of
giving Scope a SEHTryParent pointer -- this is similar to AtCatchScope.)
llvm-svn: 212422
Summary:
This gives us back the test coverage we lost when I made
MicrosoftExtensions.c x86-only.
Reviewers: majnemer
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4401
llvm-svn: 212414
Although these aren't strictly related to LLVM's core threading, it's
reasonable to avoid pthread usage in clang when building with
LLVM_ENABLE_THREADS disabled.
llvm-svn: 212395
Handle 'remark' level diagnostics as warnings instead of supplemental notes,
and use a covered switch to ensure the mapping is kept up to date.
llvm-svn: 212385
This adds support for simple MSVC compatibility mode intrinsics. These
intrinsics are simple in that they are either directly passed through to the
annotated MSBuiltin intrinsic or they mirror existing GCC builtins.
llvm-svn: 212378
This completes the infrastructure for the new MSBuiltin aliases in the
instruction definitions. These behave similar to the GCCBuiltin in that they
can be implicitly constructed without special handling unless needed.
With this change it is possible to annotate an LLVM intrinsic in the backend
instruction definitions and indicate it as a builtin in the Builtin*.def files
in clang via LANGBUILTIN. That will automatically pass through the instruction
much as a GCCBuiltin.
Note that there is no need for the special handling for ensuring that the
compatibility flag is enabled since the filtering on the LANGBUILTIN will
automatically prevent the intrinsic from bleeding into non-MS compatible
compiler invocations.
llvm-svn: 212359
Summary:
Because a global created by GetOrCreateLLVMGlobal() is not finalised until later viz:
extern char a[];
char f(){ return a[5];}
char a[10];
Change MangledDeclNames to use a MapVector rather than a DenseMap so that the
Metadata is output in order of original declaration, so to make deterministic
and improve human readablity.
Differential Revision: http://reviews.llvm.org/D4176
llvm-svn: 212263
Alexey Bataev