Gabor Marton [Thu, 28 Feb 2019 15:24:59 +0000 (15:24 +0000)]
[CTU] Do not allow different CPP dialects in CTU
Summary:
If CPP dialects are different then return with error.
Consider this STL code:
template<typename _Alloc>
struct __alloc_traits
#if __cplusplus >= 201103L
: std::allocator_traits<_Alloc>
#endif
{ // ...
};
This class template would create ODR errors during merging the two units,
since in one translation unit the class template has a base class, however
in the other unit it has none.
Erik Pilkington [Thu, 28 Feb 2019 00:47:55 +0000 (00:47 +0000)]
[CodeGen] Fix some broken IR generated by -fsanitize=unsigned-integer-overflow
I think the author of the function assumed that `GetInsertBlock()`
wouldn't change from where `atomicPHI` was created, but this isn't
true when `-fsanitize=unsigned-integer-overflow` is enabled (we
generate an overflow/continuation label). Fix by keeping track of the
block we want to return to to complete the cmpxchg loop.
Reid Kleckner [Wed, 27 Feb 2019 23:38:44 +0000 (23:38 +0000)]
[InstrProf] Use separate comdat group for data and counters
Summary:
I hadn't realized that instrumentation runs before inlining, so we can't
use the function as the comdat group. Doing so can create relocations
against discarded sections when references to discarded __profc_
variables are inlined into functions outside the function's comdat
group.
In the future, perhaps we should consider standardizing the comdat group
names that ELF and COFF use. It will save object file size, since
__profv_$sym won't appear in the symbol table again.
Jan Korous [Wed, 27 Feb 2019 21:47:40 +0000 (21:47 +0000)]
[clang][index-while-building] FileIndexRecord
Basic data structures for index
Tests are missing from this patch - will be covered properly by tests for the whole feature.
I'm just trying to split into smaller patches to make it easier for reviewers.
Akira Hatanaka [Wed, 27 Feb 2019 18:17:16 +0000 (18:17 +0000)]
Avoid needlessly copying a block to the heap when a block literal
initializes a local auto variable or is assigned to a local auto
variable that is declared in the scope that introduced the block
literal.
Thus the completion code must map the input format of <UIKit/> to
the path of UIKit.framework/Headers as well as strip the
".framework" suffix when auto-completing the framework name.
Balazs Keri [Wed, 27 Feb 2019 16:31:48 +0000 (16:31 +0000)]
[ASTImporter] Improve import of FileID.
Summary:
Even if the content cache has a directory and filename, it may be a virtual file.
The old code returned with error in this case, but it is worth to try to handle
the file as it were a memory buffer.
Yaxun Liu [Wed, 27 Feb 2019 02:02:52 +0000 (02:02 +0000)]
[HIP] change kernel stub name
Add .stub to kernel stub function name so that it is different from kernel
name in device code. This is necessary to let debugger find correct symbol
for kernel.
The current constraint logic is both too lax and too strict. It fails
for input outside the [INT_MIN..INT_MAX] range, but it also implicitly
accepts 0 as value when it should not. Adjust logic to handle both
correctly.
Yaxun Liu [Tue, 26 Feb 2019 22:24:49 +0000 (22:24 +0000)]
[CUDA][HIP] Check calling convention based on function target
MSVC header files using vectorcall to differentiate overloaded functions, which
causes failure for AMDGPU target. This is because clang does not check function
calling convention based on function target.
This patch checks calling convention using the proper target info.
Alexey Bataev [Tue, 26 Feb 2019 21:51:16 +0000 (21:51 +0000)]
[OPENMP][CUDA]Do not emit warnings for variables in late-reported asm
statements.
If the assembler instruction is not generated and the delayed diagnostic
is emitted, we may end up with extra warning message for variables used
in the asm statement. Since the asm statement is not built, the
variables may be left non-referenced and it may produce a warning about
a use of the non-initialized variables.
Reid Kleckner [Tue, 26 Feb 2019 20:42:52 +0000 (20:42 +0000)]
[MS] Don't emit coverage for deleting dtors
Summary:
The MS C++ ABI has no constructor variants, but it has destructor
variants, so we should move the deleting destructor variant check
outside the check for "does the ABI have constructor variants".
Fixes PR37561, so basic code coverage works on Windows with C++.
Tom Roeder [Tue, 26 Feb 2019 19:26:41 +0000 (19:26 +0000)]
[ASTImporter] Add support for importing ChooseExpr AST nodes.
Summary:
This allows ASTs to be merged when they contain ChooseExpr (the GNU
__builtin_choose_expr construction). This is needed, for example, for
cross-CTU analysis of C code that makes use of __builtin_choose_expr.
The node is already supported in the AST, but it didn't have a matcher
in ASTMatchers. So, this change adds the matcher and adds support to
ASTImporter.
This was originally reviewed and approved in
https://reviews.llvm.org/D58292 and submitted as r354832. It was
reverted in r354839 due to failures on the Windows CI builds.
This version fixes the test failures on Windows, which were caused by
differences in template expansion between versions of clang on different
OSes. The version of clang built with MSVC and running on Windows never
expands the template in the C++ test in ImportExpr.ImportChooseExpr in
clang/unittests/AST/ASTImporter.cpp, but the version on Linux does for
the empty arguments and -fms-compatibility.
So, this version of the patch drops the C++ test for
__builtin_choose_expr, since that version was written to catch
regressions of the logic for isConditionTrue() in the AST import code
for ChooseExpr, and those regressions are also caught by
ASTImporterOptionSpecificTestBase.ImportChooseExpr, which does work on
Windows.
1) AMD family 17h "znver2" tune flag (-march, -mcpu).
2) ISAs that are enabled for "znver2" architecture.
3) For the time being, it uses the znver1 scheduler model.
4) Tests are updated.
5) This patch is the clang counterpart to D58343
Yaxun Liu [Tue, 26 Feb 2019 16:20:41 +0000 (16:20 +0000)]
[OpenCL] Fix assertion due to blocks
A recent change caused assertion in CodeGenFunction::EmitBlockCallExpr when a block is called.
There is code
Func = CGM.getOpenCLRuntime().getInvokeFunction(E->getCallee());
getCalleeDecl calls Expr::getReferencedDeclOfCallee, which does not handle
BlockExpr and returns nullptr, which causes isa to assert.
Pierre Gousseau [Tue, 26 Feb 2019 13:30:14 +0000 (13:30 +0000)]
[Driver] Allow enum SanitizerOrdinal to represent more than 64 different sanitizer checks, NFC.
enum SanitizerOrdinal has reached maximum capacity, this change extends the capacity to 128 sanitizer checks.
This can eventually allow us to add gcc 8's options "-fsanitize=pointer-substract" and "-fsanitize=pointer-compare".
Ilya Biryukov [Tue, 26 Feb 2019 11:01:50 +0000 (11:01 +0000)]
[CodeComplete] Propagate preferred type for function arguments in more cases
Summary:
See the added test for some new cases.
This change also removes special code completion calls inside the
ParseExpressionList function now that we properly propagate expected
type to the function responsible for parsing elements of the expression list
(ParseAssignmentExpression).
Tom Roeder [Mon, 25 Feb 2019 23:24:58 +0000 (23:24 +0000)]
[ASTImporter] Add support for importing ChooseExpr AST nodes.
Summary:
This allows ASTs to be merged when they contain ChooseExpr (the GNU
__builtin_choose_expr construction). This is needed, for example, for
cross-CTU analysis of C code that makes use of __builtin_choose_expr.
The node is already supported in the AST, but it didn't have a matcher
in ASTMatchers. So, this change adds the matcher and adds support to
ASTImporter.
Erik Pilkington [Mon, 25 Feb 2019 21:35:14 +0000 (21:35 +0000)]
[CodeGenObjC] Fix a nullptr dyn_cast
ObjCMessageExpr::getInstanceReceiver returns nullptr if the receiver
is 'super'. Make this check more strict, since we don't care about
messages to super here.
[libclang] Fix a trivial error introduced in D57946.
The value for CXCursor_ConvergentAttr is not 420. I'm not really sure how easy
it is to test this, and I'm not familiar with the python bindings, just noticed
the error while looking at D57946 to write D58570.
Michael Kruse [Mon, 25 Feb 2019 20:34:15 +0000 (20:34 +0000)]
[OpenMP 5.0] Parsing/sema support for from clause with mapper modifier.
This patch implements the parsing and sema support for the OpenMP
'from'-clause with potential user-defined mappers attached.
User-defined mappers are a new feature in OpenMP 5.0. A 'from'-clause
can have an explicit or implicit associated mapper, which instructs the
compiler to generate and use customized mapping functions. An example is
shown below:
struct S { int len; int *d; };
#pragma omp declare mapper(id: struct S s) map(s, s.d[0:s.len])
struct S ss;
#pragma omp target update from(mapper(id): ss) // use the mapper with name 'id' to map ss from device
Contributed-by: Lingda Li <lildmh@gmail.com>
Differential Revision: https://reviews.llvm.org/D58638
Kristof Umann [Mon, 25 Feb 2019 18:49:42 +0000 (18:49 +0000)]
[analyzer] Fix infinite recursion in printing macros
#define f(y) x
#define x f(x)
int main() { x; }
This example results a compilation error since "x" in the first line was not
defined earlier. However, the macro expression printer goes to an infinite
recursion on this example.
Luke Cheeseman [Mon, 25 Feb 2019 15:11:31 +0000 (15:11 +0000)]
[AArch64] Add support for Cortex-A76 and Cortex-A76AE
- Add LLVM backend support for Cortex-A76 and Cortex-A76AE
- Documentation can be found at
https://developer.arm.com/products/processors/cortex-a/cortex-a76
Michael Kruse [Fri, 22 Feb 2019 22:29:42 +0000 (22:29 +0000)]
[OpenMP 5.0] Parsing/sema support for to clause with mapper modifier.
This patch implements the parsing and sema support for OpenMP to clause
with potential user-defined mappers attached. User defined mapper is a
new feature in OpenMP 5.0. A to/from clause can have an explicit or
implicit associated mapper, which instructs the compiler to generate and
use customized mapping functions. An example is shown below:
struct S { int len; int *d; };
#pragma omp declare mapper(id: struct S s) map(s, s.d[0:s.len])
struct S ss;
#pragma omp target update to(mapper(id): ss) // use the mapper with name 'id' to map ss to device
CodeGen: use COMDAT for block copy/destroy helpers
SVN r339438 added support to deduplicate the helpers by using a consistent
naming scheme and using LinkOnceODR semantics. This works on ELF by means of
weak linking semantics, and entirely does not work on PE/COFF where you end up
with multiply defined strong symbols, which is a strong error on PE/COFF.
Assign the functions a COMDAT group so that they can be uniqued by the linker.
This fixes the use of blocks in CoreFoundation on Windows.
Artem Dergachev [Fri, 22 Feb 2019 00:09:56 +0000 (00:09 +0000)]
[analyzer] MIGChecker: Fix an FN when the object is released in a destructor.
When a MIG server routine argument is released in an automatic destructor,
the Static Analyzer thinks that this happens after the return statement, and so
the violation of the MIG convention doesn't happen.
Of course, it doesn't quite work that way, so this is a false negative.
Add a hack that makes the checker double-check at the end of function
that no argument was released when the routine fails with an error.
Add a BugReporterVisitor for highlighting the events of deallocating a
parameter. All such events are relevant to the emitted report (as long as the
report is indeed emitted), so all of them will get highlighted.
Add a trackExpressionValue visitor for highlighting where does the error return
code come from.
Do not add a trackExpressionValue visitor for highlighting how the deallocated
argument(s) was(were) copied around. This still remains to be implemented.
Artem Dergachev [Fri, 22 Feb 2019 00:02:47 +0000 (00:02 +0000)]
[analyzer] MIGChecker: Take advantage of the mig_server_routine annotation.
r354530 has added a new function/block/message attribute "mig_server_routine"
that attracts compiler's attention to functions that need to follow the MIG
server routine convention with respect to deallocating out-of-line data that
was passed to them as an argument.
Teach the checker to identify MIG routines by looking at this attribute,
rather than by making heuristic-based guesses.
Artem Dergachev [Thu, 21 Feb 2019 23:55:28 +0000 (23:55 +0000)]
[analyzer] MIGChecker: A checker for Mach Interface Generator conventions.
This checker detects use-after-free bugs in (various forks of) the Mach kernel
that are caused by errors in MIG server routines - functions called remotely by
MIG clients. The MIG convention forces the server to only deallocate objects
it receives from the client when the routine is executed successfully.
Otherwise, if the server routine exits with an error, the client assumes that
it needs to deallocate the out-of-line data it passed to the server manually.
This means that deallocating such data within the MIG routine and then returning
a non-zero error code is always a dangerous use-after-free bug.
Yaxun Liu [Thu, 21 Feb 2019 20:12:16 +0000 (20:12 +0000)]
[HIP] change kernel stub name
Add .stub to kernel stub function name so that it is different from kernel
name in device code. This is necessary to let debugger find correct symbol
for kernel
Eric Liu [Thu, 21 Feb 2019 11:22:58 +0000 (11:22 +0000)]
[CodeComplete] Collect visited contexts when scope specifier is invalid.
Summary:
This will allow completion consumers to guess the specified scope by
putting together scopes in the context with the specified scope (e.g. when the
specified namespace is not imported yet).
[OpenCL] Simplify LLVM IR generated for OpenCL blocks
Summary:
Emit direct call of block invoke functions when possible, i.e. in case the
block is not passed as a function argument.
Also doing some refactoring of `CodeGenFunction::EmitBlockCallExpr()`
Kadir Cetinkaya [Thu, 21 Feb 2019 09:52:33 +0000 (09:52 +0000)]
[clang][Index] Enable indexing of Template Type Parameters behind a flag
Summary:
clangd uses indexing api to provide references and it was not possible
to perform symbol information for template parameters. This patch enables
visiting of TemplateTypeParmTypeLocs.
Artem Dergachev [Thu, 21 Feb 2019 00:01:02 +0000 (00:01 +0000)]
[attributes] Add an attribute for server routines in Mach kernel and extensions.
The new __attribute__ ((mig_server_routine)) is going to be used for annotating
Mach Interface Generator (MIG) callback functions as such, so that additional
static analysis could be applied to their implementations. It can also be
applied to regular functions behavior of which is supposed to be identical to
that of a MIG server routine.
Shoaib Meenai [Wed, 20 Feb 2019 23:08:43 +0000 (23:08 +0000)]
[clang] Switch to LLVM_ENABLE_IDE
r344555 switched LLVM to guarding install targets with LLVM_ENABLE_IDE
instead of CMAKE_CONFIGURATION_TYPES, which expresses the intent more
directly and can be overridden by a user. Make the corresponding change
in clang. LLVM_ENABLE_IDE is computed by HandleLLVMOptions, so it should
be available for both standalone and integrated builds.
Nemanja Ivanovic [Wed, 20 Feb 2019 20:27:33 +0000 (20:27 +0000)]
Make predefined FLT16 macros conditional on support for the type
We unconditionally predefine these macros. However, they may be used to
determine if the type is supported. In that case, there are unnecessary
failures to compile the code.
This is the proposed fix for https://bugs.llvm.org/show_bug.cgi?id=40559
projects / clang / log