Ed Schouten [Tue, 29 Mar 2016 21:13:53 +0000 (21:13 +0000)]
Enable the SafeStack sanitizer on CloudABI by default.
Over the last month we've been testing SafeStack extensively. As far as
we know, it works perfectly fine. That why I'd like to see us having
this enabled by default for CloudABI.
This change introduces a getDefaultSanitizers() function that toolchains
can use to specify which sanitizers are enabled by default. Once all
flags are processed, only flags that had no -fno-sanitize overrides are
enabled.
Extend the thests for CloudABI to test both the default case and the
case in which we want to explicitly disable SafeStack.
Betul Buyukkurt [Tue, 29 Mar 2016 20:44:09 +0000 (20:44 +0000)]
[PGO] Move the instrumentation point closer to the value site.
For terminator instructions, the value profiling instrumentation
happens in a basic block other than where the value site resides.
This CR moves the instrumentation point prior to the value site.
Mostly NFC.
Chris Bieneman [Tue, 29 Mar 2016 17:51:08 +0000 (17:51 +0000)]
[Order Files] Fix order file usage
The CMake EXISTS operator needs to have the variable expanded. Not expanding this was causing the if statement to always be false, which made it impossible to pass linker order files in.
[Sema] Handle UTF-8 invalid format string specifiers
Improve invalid format string specifier handling by printing out
invalid specifiers characters with \x, \u and \U. Previously clang
would print gargabe whenever the character is unprintable.
Justin Lebar [Tue, 29 Mar 2016 16:24:20 +0000 (16:24 +0000)]
[CUDA] Make CUDA description strings in langopts into noun phrases. NFC
rsmith quoth in D18380:
> This should be a noun phrase -- this string appears in contexts like
> "support for %0 is enabled" -- so this should be "treating
> unattributed [...]".
Justin Lebar [Tue, 29 Mar 2016 16:24:16 +0000 (16:24 +0000)]
[CUDA] Remove three obsolete CUDA cc1 flags.
Summary:
* -fcuda-target-overloads
Previously unconditionally set to true by the driver. Necessary for
correct functioning of the compiler -- our CUDA headers wrapper won't
compile without this.
* -fcuda-disable-target-call-checks
Previously unconditionally set to true by the driver. Necessary to
compile almost any external CUDA code -- almost all libraries assume
that host+device code can call host or device functions.
Alexey Bataev [Tue, 29 Mar 2016 08:58:54 +0000 (08:58 +0000)]
[OPENMP] Remove extra code transformation.
For better support of some specific GNU extensions some extra
transformation of AST nodes were introduced. These transformations are
very hard to handle. The code is improved in handling of these
extensions by using captured expressions construct.
Alexey Bataev [Tue, 29 Mar 2016 05:34:15 +0000 (05:34 +0000)]
[OPENMP] Allow runtime insert its own code inside OpenMP regions.
Solution unifies interface of RegionCodeGenTy type to allow insert
runtime-specific code before/after main codegen action defined in
CGStmtOpenMP.cpp file. Runtime should not define its own RegionCodeGenTy
for general OpenMP directives, but must be allowed to insert its own
(required) code to support target specific codegen.
Devin Coughlin [Mon, 28 Mar 2016 23:55:58 +0000 (23:55 +0000)]
[analyzer] Use BodyFarm-synthesized body even when actual body available.
Change body autosynthesis to use the BodyFarm-synthesized body even when
an actual body exists. This enables the analyzer to use the simpler,
analyzer-provided body to model the behavior of the function rather than trying
to understand the actual body. Further, this makes the analyzer robust against
changes in headers that expose the implementations of those bodies.
Sean Callanan [Mon, 28 Mar 2016 21:43:01 +0000 (21:43 +0000)]
Improvements to the ASTImporter to support LLDB top-level Clang expressions.
The testcase for this is in LLDB, adeed by r264662.
This patch adds support for a variety of new expression types to the AST
importer, mostly related to C++. It also adds support for importing lambdas
correctly, and adds support for importing the attributes attached to any Decl.
Finally, the patch adds a new templated function to ASTNodeImporter that imports
arbitrary arrays of importable things into a bump-allocated array attached to
getToContext(). This is a pattern we see at many places in ASTNodeImporter;
rather than do it slightly differently at each point, this function does it one
way.
Richard Smith [Mon, 28 Mar 2016 21:31:09 +0000 (21:31 +0000)]
[modules] If both a module file and a module map for the same module are
explicitly provided, and the module map lists a header that does not exist,
unmark the module as 'unavailable' when loading its .pcm file. (Use of the
module might still fail if the relevant headers aren't embedded, but this
behavior is now consistent with how we behave if the module map is not
provided, and with the desired behavior for embedding headers in modules.)
Devin Coughlin [Mon, 28 Mar 2016 20:30:25 +0000 (20:30 +0000)]
[analyzer] Nullability: Don't warn along paths where null returned from non-null.
Change the nullability checker to not warn along paths where null is returned from
a method with a non-null return type, even when the diagnostic for this return
has been suppressed. This prevents warning from methods with non-null return types
that inline methods that themselves return nil but that suppressed the diagnostic.
Also change the PreconditionViolated state component to be called "InvariantViolated"
because it is set when a post-condition is violated, as well.
Mike Spertus [Mon, 28 Mar 2016 18:03:37 +0000 (18:03 +0000)]
Use VS2015 Project Support for Natvis to eliminate the need to manually install clang native visualizer
This is the clang equivalent to llvm commit 264601. When using Visual Studio 2015, cmake now puts the native visualizers in llvm.sln, so the developer automatically sees custom visualizations.
Much thanks to ariccio who provided extensive help on this change. (manual installation still needed on VS2013).
Nico Weber [Mon, 28 Mar 2016 17:28:06 +0000 (17:28 +0000)]
Windows: Shrink sizeof(MacroInfo) from 256 to 248, MacroDirective 24 to 16
In the Microsoft ABI, only bitfields with identical types get packed together,
so use consistently use one of the two instead of a mix.
Saves 457kB when parsing windows.h.
Alexey Bataev [Mon, 28 Mar 2016 12:52:58 +0000 (12:52 +0000)]
[OPENMP] Allow runtime insert its own code inside OpenMP regions.
Solution unifies interface of RegionCodeGenTy type to allow insert
runtime-specific code before/after main codegen action defined in
CGStmtOpenMP.cpp file. Runtime should not define its own RegionCodeGenTy
for general OpenMP directives, but must be allowed to insert its own
(required) code to support target specific codegen.
Alexey Bataev [Mon, 28 Mar 2016 09:53:43 +0000 (09:53 +0000)]
[OPENMP] Allow runtime insert its own code inside OpenMP regions.
Solution unifies interface of RegionCodeGenTy type to allow insert
runtime-specific code before/after main codegen action defined in
CGStmtOpenMP.cpp file. Runtime should not define its own RegionCodeGenTy
for general OpenMP directives, but must be allowed to insert its own
(required) code to support target specific codegen.
David Majnemer [Mon, 28 Mar 2016 03:19:50 +0000 (03:19 +0000)]
Fix serialization/deserialization for __uuidof
I broke this back in r264529 because I forgot to serialize the UuidAttr
member. Fix this by replacing the UuidAttr with a StringRef which is
properly serialized and deserialized.
Richard Smith [Sun, 27 Mar 2016 20:13:24 +0000 (20:13 +0000)]
[modules] When encoding SourceLocations in bitcode, rotate the 'is macro' flag
bit from the top bit to the bottom bit, so that we don't need 6 VBR6 hunks for
each macro location. Reduces libstdc++ module size by about 1%.
David Majnemer [Sun, 27 Mar 2016 04:46:07 +0000 (04:46 +0000)]
Improve the representation of CXXUuidofExpr
Keep a pointer to the UuidAttr that the CXXUuidofExpr corresponds to.
This makes translating from __uuidof to the underlying constant a lot
more straightforward.
Faisal Vali [Sat, 26 Mar 2016 20:46:45 +0000 (20:46 +0000)]
[NFC] Tweak diagnostic for template template arguments, to include template aliases.
The prior diagnostic (err_template_arg_not_class_template) would state that the template argument to a template template parameter can only be a class template, when it can also be a template alias. The newly renamed diagnostic (err_template_arg_not_valid_template) mentions template aliases.
Bob Wilson [Sat, 26 Mar 2016 18:55:13 +0000 (18:55 +0000)]
Check if a path is already absolute before trying to make it so.
The FileSystem::makeAbsolute function has been calculating the current
working directory unconditionally, even when it is not needed. This calls
down to llvm::sys::fs::current_path, which is relatively expensive
because it stats two directories, regardless of whether those paths are
already in the stat cache. The net effect is that when using the
VFS, every stat during header search turns into three stats. With this
change, we get back to a single stat for absolute directory paths.
Faisal Vali [Sat, 26 Mar 2016 16:11:37 +0000 (16:11 +0000)]
[Cxx1z-constexpr-lambda-P0170R1] Support parsing of constexpr specifier (and its inference) on lambda expressions
Support the constexpr specifier on lambda expressions - and support its inference from the lambda call operator's body.
i.e.
auto L = [] () constexpr { return 5; };
static_assert(L() == 5); // OK
auto Implicit = [] (auto a) { return a; };
static_assert(Implicit(5) == 5);
We do not support evaluation of lambda's within constant expressions just yet.
Implementation Strategy:
- teach ParseLambdaExpressionAfterIntroducer to expect a constexpr specifier and mark the invented function call operator's declarator's decl-specifier with it; Have it emit fixits for multiple decl-specifiers (mutable or constexpr) in this location.
- for cases where constexpr is not explicitly specified, have buildLambdaExpr check whether the invented function call operator satisfies the requirements of a constexpr function, by calling CheckConstexprFunctionDecl/Body.
Much obliged to Richard Smith for his patience and his care, in ensuring the code is clang-worthy.
Richard Smith [Fri, 25 Mar 2016 22:29:27 +0000 (22:29 +0000)]
Don't warn on "use" of undefined inline function that isn't actually an ODR
use. In order for this to fire, the function needed to be a templated function
marked 'constexpr' and declared but not defined. This weird pattern appears in
libstdc++'s alloc_traits.h.
Richard Smith [Fri, 25 Mar 2016 21:49:43 +0000 (21:49 +0000)]
Store list of undefined-but-used objects in a deterministic order to fix
non-deterministic diagnostics (and non-deterministic PCH files). Check these
when building a module rather than serializing it; it's not reasonable for a
module's use to be satisfied by a definition in the user of the module.
Devin Coughlin [Fri, 25 Mar 2016 21:18:22 +0000 (21:18 +0000)]
[analyzer] Add CIFIlter modeling to DeallocChecker.
The -dealloc method in CIFilter is highly unusual in that it will release
instance variables belonging to its *subclasses* if the variable name
starts with "input" or backs a property whose name starts with "input".
Subclasses should not release these ivars in their own -dealloc method --
doing so could result in an over release.
Before this commit, the DeallocChecker would warn about missing releases for
such "input" properties -- which could cause users of the analyzer to add
over releases to silence the warning.
To avoid this, DeallocChecker now treats CIFilter "input-prefixed" ivars
as MustNotReleaseDirectly and so will not require a release. Further, it
will now warn when such an ivar is directly released in -dealloc.
Manman Ren [Fri, 25 Mar 2016 18:43:46 +0000 (18:43 +0000)]
[ObjCXX] Warn undeclared identifiers.
Instantiation dependence were not being handled correctly for OpqaueValueExpr
AST nodes. As a result, if an undeclared identifier was used in a CXXNewExpr
that is assigned to a ObjC property, there would be no error during parsing, and
there would be a crash during code gen. This patch makes sure that an error
will be issued during parsing in this case.
Before the fix, if CXXNewExpr has a typo, its InstantiationDependent will be
set to true, but if it is wrapped in a OpaqueValueExpr, the OpaqueValueExpr will
not be instantiation dependent, causing the TypoExpr not be to resolved. The fix
propagates InstantiationDependent to OpaqueValueExpr from its SourceExpr. It
also propagates the other instantiation bits.
Ben Langmuir [Fri, 25 Mar 2016 17:01:59 +0000 (17:01 +0000)]
[index] Remove redundancy between symbol kind and language
Condense the ObjCKIND and CXXKIND options into just KIND, since the
language was already specified on a per-symbol basis and this
information was redundant. This only changes the internal
representation; naturally the libclang interface remains the same.
Samuel Benzaquen [Fri, 25 Mar 2016 16:29:30 +0000 (16:29 +0000)]
[ASTMatchers] Add own version of VariadicFunction.
Summary:
llvm::VariadicFunction is only being used by ASTMatchers.
Having our own copy here allows us to remove the other one from llvm/ADT.
Also, we can extend the API to meet our needs without modifying the common
implementation.
Adrian Prantl [Fri, 25 Mar 2016 00:20:35 +0000 (00:20 +0000)]
Debug Info: Add a testcase for the bug introduced by r259975.
In r259975 we rauw'ed the scope of enum declarations without taking into
account that DIBuilder strips out scope references that point to the
DICompileUnit to facilitate type uniquing.
This testcase guards against making the same mistake again.
<rdar://problem/25078246>
Richard Smith [Thu, 24 Mar 2016 23:41:14 +0000 (23:41 +0000)]
[modules] Store offset to LOCAL_REDECLARATIONS record relative to the current
record rather than relative to the start of the bitcode file. Saves a couple of
bytes per LOCAL_REDECLARATIONS record (also makes diffs of llvm-bcanalyzer
output more useful when tracking down nondeterminism...).
Reid Kleckner [Thu, 24 Mar 2016 20:38:43 +0000 (20:38 +0000)]
Revert "Recommitted r263425 "Supporting all entities declared in lexical scope in LLVM debug info." After fixing PR26942 (the fix is included in this commit)."
This reverts commit r264281.
This change breaks building Chromium for iOS. We'll upload a reproducer
to the PR soon.
Richard Smith [Thu, 24 Mar 2016 19:12:22 +0000 (19:12 +0000)]
Change ADL to produce lookup results in a deterministic order. This fixes some
rare issues with nondeterministic diagnostic order, and some very common issues
with nondeterministic module builds.
Eric Liu [Thu, 24 Mar 2016 13:22:37 +0000 (13:22 +0000)]
Revert "Added support for different VFSs in format::getStyle."
This reverts commit r264253. It is breaking the buildbot http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/2203
Eric Liu [Thu, 24 Mar 2016 11:25:28 +0000 (11:25 +0000)]
Revert "Added support for different VFSs in format::getStyle."
This reverts commit r264253. It is breaking the buildbot http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/2203
Eric Liu [Thu, 24 Mar 2016 10:50:17 +0000 (10:50 +0000)]
Added support for different VFSs in format::getStyle.
Summary:
Previously, format::getStyle assumes that the given file resides in
the real file system, which prevents the use of virtual file system in testing etc.
This patch adds a parameter in format::getStyle interface so that users can specify
the right file system. By default, the file system is the real file system.
Eric Christopher [Thu, 24 Mar 2016 00:34:02 +0000 (00:34 +0000)]
Modules builds are necessarily compile actions, but they don't
necessarily produce object files. Turn off split dwarf if we're not
producing a file that the driver believes is an object file.
Nico Weber [Wed, 23 Mar 2016 22:57:55 +0000 (22:57 +0000)]
clang-cl: With -fmsc-version=1900, use MSVS2015 diag formatting.
Remove tests that have neither a triple nor an explicit -fmsc-version flag,
since in the absence of an -fmsc-version flag, the implicit value of the flag
is 17 (MSVC2013) with MSVC triples but 0 (not set) for other triples, and
the default triple is platform dependent.
Justin Lebar [Wed, 23 Mar 2016 22:42:30 +0000 (22:42 +0000)]
[CUDA] Merge most of CodeGenCUDA/function-overload.cu into SemaCUDA/function-overload.cu.
Summary:
Previously we were using the codegen test to ensure that we choose the
right overload. But we can do this within sema, with a bit of
cleverness.
I left the constructor/destructor checks in CodeGen, because these
overloads (particularly on the destructors) are hard to check in Sema.
Summary:
Principally, don't hardcode the line numbers of various notes. This
lets us make changes to the test without recomputing linenos everywhere.
Instead, just tell -verify that we may get 0 or more notes pointing to
the relevant function definitions. Checking that we get exactly the
right note isn't so important (and anyway is checked elsewhere).
Justin Lebar [Wed, 23 Mar 2016 22:42:27 +0000 (22:42 +0000)]
[CUDA] Don't define __NVCC__.
Summary:
We decided this makes life too difficult for code authors. For example,
people may want to detect NVCC and disable variadic templates, which
NVCC does not support, but which we do.
Since people are going to have to change compiler flags *anyway* in
order to compile with clang, if they really want the old behavior, they
can pass -D__NVCC__.
Tested with tensorflow and thrust, no apparent problems.
Richard Smith [Wed, 23 Mar 2016 20:39:06 +0000 (20:39 +0000)]
Make SemaAccess smarter about determining when a dependent class might
instantiate to match a friend class declaration. It's still pretty dumb,
though.
Richard Smith [Wed, 23 Mar 2016 20:07:07 +0000 (20:07 +0000)]
Make sure to perform dependent access checks when instantiating a
lambda-expression. We don't actually instantiate the closure type / operator()
in the template in order to produce the closure type / operator() in the
instantiation, so this isn't caught by the normal path.
Nico Weber [Wed, 23 Mar 2016 18:46:57 +0000 (18:46 +0000)]
clang-cl: Fix remaining bugs in interaction of /Yc and /FI /showIncludes.
Instead of putting the /Yc header into ExtraDeps, give DependencyOutputOptions
a dedicated field for /Yc mode, and let HeaderIncludesCallback hang on to the
full DependencyOutputOptions object, not just ExtraDeps.
Reverts parts of r263352 that are now no longer needed.
Nico Weber [Wed, 23 Mar 2016 18:17:02 +0000 (18:17 +0000)]
clang-cl: Add more tests for the interaction of /FI and /Yc /Yu.
Most things even work; see the included FIXMEs for things that need polishing.
Also don't warn about unused flags for the `/Yuh2.h /FIh1.h /FIh2.h`. The
common case is that the pch was built with `/Ych2.h /FIh1.h /FIh2.h`, so h1.h
is in the PCH, and we shouldn't warn about /FIh1.h not having an effect.
(If we wanted to get fancy, we could store the list of -include flags in the
pch and then check that it matches later on.)
Nico Weber [Wed, 23 Mar 2016 18:00:22 +0000 (18:00 +0000)]
clang-cl: Include /FI headers in /showIncludes output.
-H in gcc mode doesn't print -include headers, but they are included in
depfiles written by MMD and friends. Since /showIncludes is what's used instead
of depfiles, printing /FI there seems important (and matches cl.exe).
Instead of giving HeaderIncludeGen more options, just switch on ShowAllHeaders
in clang-cl mode and let clang::InitializePreprocessor() not put -include flags
in the <command line> block. This changes the behavior of -E slightly, and it
removes the <command line> flag from the output triggered by setting the
obscure CC_PRINT_HEADERS=1 env var to true while running clang. Both of these
seem ok to change.
Manman Ren [Wed, 23 Mar 2016 16:28:28 +0000 (16:28 +0000)]
ObjC: Handle boolean fixed type for enum.
Before this commit, we assert failure in ImplicitCastExpr
"unheralded conversion to bool". This commit fixes the assertion by using
the correct cast type when the fixed type is boolean.
This commit also fixes the behavior for Microsoft mode as well, since
Obj-C and Microsoft mode share the same code path.
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