Commit Graph

39886 Commits

Author SHA1 Message Date
Florian Hahn 7899a111ea Revert "[Darwin] Respect -fno-unroll-loops during LTO."
As per post-commit comment at https://reviews.llvm.org/D76916, this
should better be done at the TU level.

This reverts commit 9ce198d6ed.
2020-03-30 15:20:30 +01:00
Alexey Bataev 7ac9efb0c3 [OPENMP50]Add basic support for array-shaping operation.
Summary:
Added basic representation and parsing/sema handling of array-shaping
operations. Array shaping expression is an expression of form ([s0]..[sn])base,
where s0, ..., sn must be a positive integer, base - a pointer. This
expression is a kind of cast operation that converts pointer expression
into an array-like kind of expression.

Reviewers: rjmccall, rsmith, jdoerfert

Subscribers: guansong, arphaman, cfe-commits, caomhin, kkwli0

Tags: #clang

Differential Revision: https://reviews.llvm.org/D74144
2020-03-30 09:18:24 -04:00
Haojian Wu 6f428e09fb [AST] Fix crashes on decltype(recovery-expr).
Summary: We mark these decls as invalid.

Reviewers: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77037
2020-03-30 14:56:33 +02:00
Haojian Wu f757ecbf85 [AST] Fix a crash on invalid bitwidth exprs when preserving the recoveryexprs.
Summary:
If the bitwith expr contains errors, we mark the field decl invalid.

This patch also tweaks the behavior of ObjCInterfaceDecl to be consistent with
existing RecordDecl -- getObjCLayout method is only called with valid decls.

Reviewers: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76953
2020-03-30 10:52:00 +02:00
Balázs Kéri dcc04e09cf [Analyzer][MallocChecker] No warning for kfree of ZERO_SIZE_PTR.
Summary:
The kernel kmalloc function may return a constant value ZERO_SIZE_PTR
if a zero-sized block is allocated. This special value is allowed to
be passed to kfree and should produce no warning.

This is a simple version but should be no problem. The macro is always
detected independent of if this is a kernel source code or any other
code.

Reviewers: Szelethus, martong

Reviewed By: Szelethus, martong

Subscribers: rnkovacs, xazax.hun, baloghadamsoftware, szepet, a.sidorin, mikhail.ramalho, Szelethus, donat.nagy, dkrupp, gamesh411, Charusso, martong, ASDenysPetrov, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76830
2020-03-30 10:33:14 +02:00
Adam Balogh eb90692d8a [Analyzer] Rename test `iterator-modelling.cpp` to `iterator-modeling.cpp`
Typo fix.
2020-03-30 09:23:35 +02:00
Adam Balogh afcb77cc88 [Analyzer] Fix for incorrect use of container and iterator checkers
Iterator checkers (and planned container checkers) need the option
aggressive-binary-operation-simplification to be enabled. Without this
option they may cause assertions. To prevent such misuse, this patch adds
a preventive check which issues a warning and denies the registartion of
the checker if this option is disabled.

Differential Revision: https://reviews.llvm.org/D75171
2020-03-30 09:14:45 +02:00
Richard Smith 9a7eda1bec PR45350: Handle unsized array CXXConstructExprs in constant evaluation
of array new expressions with runtime bound.
2020-03-29 19:33:56 -07:00
Richard Smith a5458bb0d6 Don't claim template names that name non-templates are undeclared. 2020-03-29 13:15:30 -07:00
Joerg Sonnenberger 09d4021853 Fix compatibility for __builtin_stdarg_start
The __builtin_stdarg_start is the legacy spelling of __builtin_va_start.
It should behave exactly the same, but for the last 9 years it would
behave subtly different for diagnostics. Follow the change from
29ad95b232 to require custom type checking.
2020-03-28 23:24:13 +01:00
Yonghong Song ced0d1f42b [BPF] support 128bit int explicitly in layout spec
Currently, bpf does not specify 128bit alignment in its
layout spec. So for a structure like
  struct ipv6_key_t {
    unsigned pid;
    unsigned __int128 saddr;
    unsigned short lport;
  };
clang will generate IR type
  %struct.ipv6_key_t = type { i32, [12 x i8], i128, i16, [14 x i8] }
Additional padding is to ensure later IR->MIR can generate correct
stack layout with target layout spec.

But it is common practice for a tracing program to be
first compiled with target flag (e.g., x86_64 or aarch64) through
clang to generate IR and then go through llc to generate bpf
byte code. Tracing program often refers to kernel internal
data structures which needs to be compiled with non-bpf target.

But such a compilation model may cause a problem on aarch64.
The bcc issue https://github.com/iovisor/bcc/issues/2827
reported such a problem.

For the above structure, since aarch64 has "i128:128" in its
layout string, the generated IR will have
  %struct.ipv6_key_t = type { i32, i128, i16 }

Since bpf does not have "i128:128" in its spec string,
the selectionDAG assumes alignment 8 for i128 and
computes the stack storage size for the above is 32 bytes,
which leads incorrect code later.

The x86_64 does not have this issue as it does not have
"i128:128" in its layout spec as it does permits i128 to
be alignmented at 8 bytes at stack. Its IR type looks like
  %struct.ipv6_key_t = type { i32, [12 x i8], i128, i16, [14 x i8] }

The fix here is add i128 support in layout spec, the same as
aarch64. The only downside is we may have less optimal stack
allocation in certain cases since we require 16byte alignment
for i128 instead of 8. But this is probably fine as i128 is
not used widely and in most cases users should already
have proper alignment.

Differential Revision: https://reviews.llvm.org/D76587
2020-03-28 11:46:29 -07:00
Alexandre Ganea 3ab3f3c5d5 After 09158252f7, fix build when -DLLVM_ENABLE_THREADS=OFF
Tested on Linux with Clang 9, and on Windows with Visual Studio 2019 16.5.1 with -DLLVM_ENABLE_THREADS=ON and OFF.
2020-03-28 13:54:58 -04:00
Yaxun (Sam) Liu 369e26ca9e [AMDGPU] Add __builtin_amdgcn_workgroup_size_x/y/z
The main purpose of introducing these builtins is to add a range
metadata [1, 1025) on the work group size loaded from dispatch
ptr, which cannot be done by source code.

Differential Revision: https://reviews.llvm.org/D76772
2020-03-28 01:03:20 -04:00
Richard Smith 499b2a8d63 PR45294: Fix handling of assumed template names looked up in the lexical
scope.

There are a few contexts in which we assume a name is a template name;
if such a context is one where we should perform an unqualified lookup,
and lookup finds nothing, we would form a dependent template name even
if the name is not dependent. This happens in particular for the lookup
of a pseudo-destructor.

In passing, rename ActOnDependentTemplateName to just ActOnTemplateName
given that we apply it for non-dependent template names too.
2020-03-27 21:07:06 -07:00
Richard Smith 88c7ffaf94 Form invalid template-id annotations when parsing a construct that is
required to be a template-id but names an undeclared identifier.
2020-03-27 20:27:42 -07:00
Richard Smith 0c42539df3 Improve error recovery from missing '>' in template argument list.
Produce the conventional "to match this '<'" note, so that the user
knows why we expected a '>', and properly handle '>>' in C++11 onwards.
2020-03-27 18:59:01 -07:00
Richard Smith b3f6e3d6d6 Improve recovery from invalid template-ids.
Instead of bailing out of parsing when we encounter an invalid
template-name or template arguments in a template-id, produce an
annotation token describing the invalid construct.

This avoids duplicate errors and generally allows us to recover better.
In principle we should be able to extend this to store some kinds of
invalid template-id in the AST for tooling use, but that isn't handled
as part of this change.
2020-03-27 17:11:04 -07:00
Florian Hahn 9ce198d6ed [Darwin] Respect -fno-unroll-loops during LTO.
Currently -fno-unroll-loops is ignored when doing LTO on Darwin. This
patch adds a new -lto-no-unroll-loops option to the LTO code generator
and forwards it to the linker if -fno-unroll-loops is passed.

Reviewers: thegameg, steven_wu

Reviewed By: thegameg

Differential Revision: https://reviews.llvm.org/D76916
2020-03-27 22:19:03 +00:00
Alexey Bataev 0fca766458 [OPENMP50]Fix PR45117: Orphaned task reduction should be allowed.
Add support for orpahned task reductions.
2020-03-27 17:47:30 -04:00
Adrian Prantl 22d5bd0e3b Allow remapping Clang module include paths
in the debug info with -fdebug-prefix-map.

rdar://problem/55685132

This reapplies an earlier attempt to commit this without
modifications.

Differential Revision: https://reviews.llvm.org/D76385
2020-03-27 14:23:30 -07:00
Michael Liao 5be9b8cbe2 [cuda][hip] Add CUDA builtin surface/texture reference support.
Summary: - Re-commit after fix Sema checks on partial template specialization.

Reviewers: tra, rjmccall, yaxunl, a.sidorin

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76365
2020-03-27 17:18:49 -04:00
Alexey Bataev 49764dc30c [OPENMP50]Add basic support for inscan reduction modifier.
Added basic support (parsing/sema checks) for the inscan modifier in the
reduction clauses.
2020-03-27 13:54:38 -04:00
Richard Sandiford c6824883cc [AST][SVE] Treat built-in SVE types as trivial
Built-in SVE types are trivial, since they're trivially copyable
and support default construction.

Differential Revision: https://reviews.llvm.org/D76692
2020-03-27 17:34:04 +00:00
Richard Sandiford 35392660e6 [AST][SVE] Treat built-in SVE types as trivially copyable
SVE types are trivially copyable: they can be copied simply
by reproducing the byte representation of the source object.

Differential Revision: https://reviews.llvm.org/D76691
2020-03-27 17:32:55 +00:00
Richard Sandiford 9dcb20a7d0 [AST][SVE] Treat built-in SVE types as POD
Built-in SVE types are POD in much the same that scalars and
fixed-length vectors are.

Differential Revision: https://reviews.llvm.org/D76690
2020-03-27 17:04:07 +00:00
Artem Belevich fe8063e1a0 Revert "[cuda][hip] Add CUDA builtin surface/texture reference support."
This reverts commit 6a9ad5f3f4.
The patch breaks CUDA copmilation.

Differential Revision: https://reviews.llvm.org/D76365
2020-03-27 10:01:38 -07:00
Mikhail Maltsev bd722ef63f [ARM,CDE] Improve CDE intrinsics testing
Summary:
This patch:
* adds tests for vreinterpret intinsics in big-endian mode
* adds C++ runs to the CDE+MVE header compatibility test

Reviewers: simon_tatham, MarkMurrayARM, ostannard, dmgreen

Reviewed By: simon_tatham

Subscribers: kristof.beyls, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76927
2020-03-27 16:05:18 +00:00
Alexey Bataev ee27df5552 Revert "[OPENMP50]Add basic support for inscan reduction modifier."
This reverts commit 36ed0ceec7 to fix a
crash in scan_messages.cpp test.
2020-03-27 11:25:47 -04:00
Alexey Bataev 36ed0ceec7 [OPENMP50]Add basic support for inscan reduction modifier.
Added basic support (parsing/sema checks) for the inscan modifier in the
reduction clauses.
2020-03-27 10:38:25 -04:00
Kirstóf Umann 30a8b77080 [analyzer][MallocChecker] Fix that kfree only takes a single argument
Exactly what it says on the tin!

https://www.kernel.org/doc/htmldocs/kernel-api/API-kfree.html

Differential Revision: https://reviews.llvm.org/D76917
2020-03-27 13:17:35 +01:00
Mikael Holmen 7d482e9213 Fix TBAA for unsigned fixed-point types
Summary:
Unsigned types can alias the corresponding signed types. I don't see
that this is explicitly mentioned in the Embedded-C specification, but
I think it should work the same as for the integer types.

Patch by: materi

Reviewers: ebevhan, leonardchan

Reviewed By: leonardchan

Subscribers: kosarev, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76856
2020-03-27 10:35:24 +01:00
Johannes Doerfert befb4be3a8 [OpenMP] `omp begin/end declare variant` - part 2, sema ("+CG")
This is the second part loosely extracted from D71179 and cleaned up.

This patch provides semantic analysis support for `omp begin/end declare
variant`, mostly as defined in OpenMP technical report 8 (TR8) [0].
The sema handling makes code generation obsolete as we generate "the
right" calls that can just be handled as usual. This handling also
applies to the existing, albeit problematic, `omp declare variant
support`. As a consequence a lot of unneeded code generation and
complexity is removed.

A major purpose of this patch is to provide proper `math.h`/`cmath`
support for OpenMP target offloading. See PR42061, PR42798, PR42799. The
current code was developed with this feature in mind, see [1].

The logic is as follows:

If we have seen a `#pragma omp begin declare variant match(<SELECTOR>)`
but not the corresponding `end declare variant`, and we find a function
definition we will:
  1) Create a function declaration for the definition we were about to generate.
  2) Create a function definition but with a mangled name (according to
     `<SELECTOR>`).
  3) Annotate the declaration with the `OMPDeclareVariantAttr`, the same
     one used already for `omp declare variant`, using and the mangled
     function definition as specialization for the context defined by
     `<SELECTOR>`.

When a call is created we inspect it. If the target has an
`OMPDeclareVariantAttr` attribute we try to specialize the call. To this
end, all variants are checked, the best applicable one is picked and a
new call to the specialization is created. The new call is used instead
of the original one to the base function. To keep the AST printing and
tooling possible we utilize the PseudoObjectExpr. The original call is
the syntactic expression, the specialized call is the semantic
expression.

[0] https://www.openmp.org/wp-content/uploads/openmp-TR8.pdf
[1] https://reviews.llvm.org/D61399#change-496lQkg0mhRN

Reviewers: kiranchandramohan, ABataev, RaviNarayanaswamy, gtbercea, grokos, sdmitriev, JonChesterfield, hfinkel, fghanim, aaron.ballman

Subscribers: bollu, guansong, openmp-commits, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75779
2020-03-27 02:30:58 -05:00
Johannes Doerfert 095cecbe0d [OpenMP] `omp begin/end declare variant` - part 1, parsing
This is the first part extracted from D71179 and cleaned up.

This patch provides parsing support for `omp begin/end declare variant`,
as defined in OpenMP technical report 8 (TR8) [0].

A major purpose of this patch is to provide proper math.h/cmath support
for OpenMP target offloading. See PR42061, PR42798, PR42799. The current
code was developed with this feature in mind, see [1].

[0] https://www.openmp.org/wp-content/uploads/openmp-TR8.pdf
[1] https://reviews.llvm.org/D61399#change-496lQkg0mhRN

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D74941
2020-03-27 02:30:58 -05:00
Douglas Yung 5db37f3bca Make PS4 use -fno-use-init-array only as the ABI does not support .init_array.
Reviewed by Paul Robinson
2020-03-26 15:45:40 -07:00
Sid Manning b0da094983 [Hexagon] Add support for Linux/Musl ABI (part 2)
A continuation of https://reviews.llvm.org/D72701.  This
adds support needed in clang.

Differential Revision: https://reviews.llvm.org/D75638
2020-03-26 17:19:46 -05:00
Alexey Bataev 2a43a1610d [OPENMP50]Fix the checks for the nesting of scan directives.
Fixed the check for the orhaned scan directives and improved checks for
parallel for and parallel for simd directives.
2020-03-26 17:30:02 -04:00
Alexey Bataev f9e71f4d9d Revert "[OPENMP50]Add basic support for inscan reduction modifier."
This reverts commit 8099e0fe82 to fix the
problems with the Windows-based buildbots.
2020-03-26 15:57:19 -04:00
Alexey Bataev 8099e0fe82 [OPENMP50]Add basic support for inscan reduction modifier.
Added basic support (parsing/sema checks) for the inscan modifier in the
reduction clauses.
2020-03-26 14:51:09 -04:00
Michael Liao 6a9ad5f3f4 [cuda][hip] Add CUDA builtin surface/texture reference support.
Summary:
- Even though the bindless surface/texture interfaces are promoted,
  there are still code using surface/texture references. For example,
  [PR#26400](https://bugs.llvm.org/show_bug.cgi?id=26400) reports the
  compilation issue for code using `tex2D` with texture references. For
  better compatibility, this patch proposes the support of
  surface/texture references.
- Due to the absent documentation and magic headers, it's believed that
  `nvcc` does use builtins for texture support. From the limited NVVM
  documentation[^nvvm] and NVPTX backend texture/surface related
  tests[^test], it's believed that surface/texture references are
  supported by replacing their reference types, which are annotated with
  `device_builtin_surface_type`/`device_builtin_texture_type`, with the
  corresponding handle-like object types, `cudaSurfaceObject_t` or
  `cudaTextureObject_t`, in the device-side compilation. On the host
  side, that global handle variables are registered and will be
  established and updated later when corresponding binding/unbinding
  APIs are called[^bind]. Surface/texture references are most like
  device global variables but represented in different types on the host
  and device sides.
- In this patch, the following changes are proposed to support that
  behavior:
  + Refine `device_builtin_surface_type` and
    `device_builtin_texture_type` attributes to be applied on `Type`
    decl only to check whether a variable is of the surface/texture
    reference type.
  + Add hooks in code generation to replace that reference types with
    the correponding object types as well as all accesses to them. In
    particular, `nvvm.texsurf.handle.internal` should be used to load
    object handles from global reference variables[^texsurf] as well as
    metadata annotations.
  + Generate host-side registration with proper template argument
    parsing.

---
[^nvvm]: https://docs.nvidia.com/cuda/pdf/NVVM_IR_Specification.pdf
[^test]: https://raw.githubusercontent.com/llvm/llvm-project/master/llvm/test/CodeGen/NVPTX/tex-read-cuda.ll
[^bind]: See section 3.2.11.1.2 ``Texture reference API` in [CUDA C Programming Guide](https://docs.nvidia.com/cuda/pdf/CUDA_C_Programming_Guide.pdf).
[^texsurf]: According to NVVM IR, `nvvm.texsurf.handle` should be used.  But, the current backend doesn't have that supported. We may revise that later.

Reviewers: tra, rjmccall, yaxunl, a.sidorin

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76365
2020-03-26 14:44:52 -04:00
Sam McCall 47e7bdb107 Test that would have caught recovery-expr crashes in 0788acbccb. NFC 2020-03-26 18:43:29 +01:00
Matt Arsenault 40076c14fe CUDA: Fix broken test run lines
There was a misisng space between the -march and --cuda-gpu-arch
arguments, so --cuda-gpu-arch wasn't actually being parsed. I'm not
sure what the intent of the sm_10 run lines were, but they error as an
unsupported architecture. Switch these to something else.
2020-03-26 12:19:34 -04:00
Haojian Wu 62dea6e9be Revert "[AST] Build recovery expressions by default for C++."
This reverts commit 0788acbccb.
This reverts commit c2d7a1f79cedfc9fcb518596aa839da4de0adb69:  Revert "[clangd] Add test for FindTarget+RecoveryExpr (which already works). NFC"

It causes a crash on invalid code:

class X {
  decltype(unresolved()) foo;
};
constexpr int s = sizeof(X);
2020-03-26 16:25:32 +01:00
Sam McCall 13dc21e841 [AST] Make thinlto testcase robust to 159a9f7e76
Ultimately it relies on the output of __PRETTY_FUNCTION__ which isn't reliable.
2020-03-26 12:47:39 +01:00
Sam McCall 38798d0306 Revert "[AST] Fix thinlto testcase missed in 159a9f7e76307734bcdcae3357640e42e0733194"
This reverts commit 4bd1d55884.
Cure is worse than the disease: "> >" is still expected in most configs.
Working on fixing the fuchsia builder.
2020-03-26 12:38:33 +01:00
Sam McCall 4bd1d55884 [AST] Fix thinlto testcase missed in 159a9f7e76 2020-03-26 10:28:54 +01:00
Ties Stuij 71ae267d1f [PATCH] [ARM] ARMv8.6-a command-line + BFloat16 Asm Support
Summary:
This patch introduces command-line support for the Armv8.6-a architecture and assembly support for BFloat16. Details can be found
https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/arm-architecture-developments-armv8-6-a

in addition to the GCC patch for the 8..6-a CLI:
https://gcc.gnu.org/legacy-ml/gcc-patches/2019-11/msg02647.html

In detail this patch

- march options for armv8.6-a
- BFloat16 assembly

This is part of a patch series, starting with command-line and Bfloat16
assembly support. The subsequent patches will upstream intrinsics
support for BFloat16, followed by Matrix Multiplication and the
remaining Virtualization features of the armv8.6-a architecture.

Based on work by:
- labrinea
- MarkMurrayARM
- Luke Cheeseman
- Javed Asbar
- Mikhail Maltsev
- Luke Geeson

Reviewers: SjoerdMeijer, craig.topper, rjmccall, jfb, LukeGeeson

Reviewed By: SjoerdMeijer

Subscribers: stuij, kristof.beyls, hiraditya, dexonsmith, danielkiss, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D76062
2020-03-26 09:17:20 +00:00
Sam McCall 159a9f7e76 [AST] Print a<b<c>> without extra spaces in C++11 or later.
Summary: It's not 1998 anymore.

Reviewers: kadircet

Subscribers: jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76801
2020-03-26 09:53:54 +01:00
Adam Balogh 1a27d63a88 [Analyzer] Only add container note tags to the operations of the affected container
If an error happens which is related to a container the Container
Modeling checker adds note tags to all the container operations along
the bug path. This may be disturbing if there are other containers
beside the one which is affected by the bug. This patch restricts the
note tags to only the affected container and adjust the debug checkers
to be able to test this change.

Differential Revision: https://reviews.llvm.org/D75514
2020-03-26 09:44:16 +01:00
Haojian Wu a9ab11d408 [AST] Build recovery expressions for nonexistent member exprs.
Summary: Previously, we dropped the AST node for nonexistent member exprs.

Reviewers: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76764
2020-03-26 08:50:33 +01:00
Adam Balogh a3f4d17a1a [Analyzer] Use note tags to track container begin and and changes
Container operations such as `push_back()`, `pop_front()`
etc. increment and decrement the abstract begin and end
symbols of containers. This patch introduces note tags
to `ContainerModeling` to track these changes. This helps
the user to better identify the source of errors related
to containers and iterators.

Differential Revision: https://reviews.llvm.org/D73720
2020-03-26 07:56:28 +01:00
Erich Keane fe5c719eaf Implement post-commit comments for D75685/rG86e0a6c60627
@Anastasia made a pair of comments on D75685 after it was committed
requesting changes to the test.  This patch updates the test based on
her comments.
2020-03-25 12:24:56 -07:00
Erich Keane 044c51d8d4 Fix vector type scalar checking when the scalar operand is dependent
As reported in PR45298 and PR45299, vector_size type checking would
crash when done in a situation where the scalar is dependent, such as
a member of the current instantiation.

This is because the scalar checking ensures that you can implicitly
convert a value to a vector-type as long as it doesn't require
truncation. It does this by using the constant evaluator to get the
value as a float. Unfortunately, if the scalar is dependent (such as a
member of the current instantiation), we would hit the assert in the
evaluator.

This patch suppresses the truncation- of-value check in the first phase
of translation. All values are properly errored upon instantiation. This
has one minor regression, in that previously in a non-asserts build,

template<typename T>
struct S {
  float4 f(float4 f) {
    return k + f;
  }
  static constexpr k = 1.1; // causes a truncation on conversion.
};

would error immediately. Because 'k' is value dependent (as a
member-of-the-current-instantiation), this would still be evaluatable
(despite normally asserting).  Due to this patch, this diagnostic is
delayed until instantiation time.
2020-03-25 11:38:58 -07:00
Mikhail Maltsev bb4da94e5b [ARM,CDE] Implement predicated Q-register CDE intrinsics
Summary:
This patch implements the following CDE intrinsics:

  T __arm_vcx1q_m(int coproc, T inactive, uint32_t imm, mve_pred_t p);
  T __arm_vcx2q_m(int coproc, T inactive, U n, uint32_t imm, mve_pred_t p);
  T __arm_vcx3q_m(int coproc, T inactive, U n, V m, uint32_t imm, mve_pred_t p);

  T __arm_vcx1qa_m(int coproc, T acc, uint32_t imm, mve_pred_t p);
  T __arm_vcx2qa_m(int coproc, T acc, U n, uint32_t imm, mve_pred_t p);
  T __arm_vcx3qa_m(int coproc, T acc, U n, V m, uint32_t imm, mve_pred_t p);

The intrinsics are not part of the released ACLE spec, but internally at
Arm we have reached consensus to add them to the next ACLE release.

Reviewers: simon_tatham, MarkMurrayARM, ostannard, dmgreen

Reviewed By: simon_tatham

Subscribers: kristof.beyls, hiraditya, danielkiss, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76610
2020-03-25 17:08:19 +00:00
Erich Keane 86e0a6c606 Add MS Mangling for OpenCL Pipe types, add mangling test.
SPIRV2.0 Spec only specifies Linux mangling, however our downstream has
use for a Windows mangling for these types.

Unfortunately, the SPIRV
spec specifies a single mangling for all pipe types, despite clang
allowing overloading on these types.  Because of this, this patch
chooses to mangle the read/writability and element type for the windows
mangling.

The windows manglings in the test all demangle according to demangler:
"void __cdecl test1(struct __clang::ocl_pipe<int,1>)
"void __cdecl test2(struct __clang::ocl_pipe<float,0>)
"void __cdecl test2(struct __clang::ocl_pipe<int,1>)
"void __cdecl test3(struct __clang::ocl_pipe<int const,1>)
"void __cdecl test4(struct __clang::ocl_pipe<union
__clang::__vector<unsigned char,3>,1>)
"void __cdecl test5(struct __clang::ocl_pipe<union
__clang::__vector<int,4>,1>)
"void __cdecl test_reserved_read_pipe(struct __clang::_ASCLglobal<struct
Person > * __ptr64,struct __clang::ocl_pipe<struct Person,1>)

Differential Revision: https://reviews.llvm.org/D75685
2020-03-25 07:59:22 -07:00
John Brawn 3f03c12a51 Add an attribute plugin example
Differential Revision: https://reviews.llvm.org/D31343
2020-03-25 14:33:44 +00:00
sstefan1 72b51d6f93 OpenMP] Adding InaccessibleMemOnly and InaccessibleMemOrArgMemOnly for runtime calls.
Summary: Attempt to add more attributes for runtime calls.

Reviewers: jdoerfert

Subscribers: guansong, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D75010
2020-03-25 14:08:50 +00:00
Erich Keane b5a034e771 [SYCL] Implement __builtin_unique_stable_name.
In order to support non-user-named kernels, SYCL needs some way in the
integration headers to name the kernel object themselves. Initially, the
design considered just RTTI naming of the lambdas, this results in a
quite unstable situation in light of some device/host macros.
Additionally, this ends up needing to use RTTI, which is a burden on the
implementation and typically unsupported.

Instead, we've introduced a builtin, __builtin_unique_stable_name, which
takes a type or expression, and results in a constexpr constant
character array that uniquely represents the type (or type of the
expression) being passed to it.

The implementation accomplishes that simply by using a slightly modified
version of the Itanium Mangling. The one exception is when mangling
lambdas, instead of appending the index of the lambda in the function,
it appends the macro-expansion back-trace of the lambda itself in the
form LINE->COL[~LINE->COL...].

Differential Revision: https://reviews.llvm.org/D76620
2020-03-25 07:01:50 -07:00
Richard Sandiford 856bdd01fd [Sema][SVE] Allow casting SVE types to themselves in C
Casts from an SVE type to itself aren't very useful, but they are
supposed to be valid, and could occur in things like macro expansions.

Such casts already work for C++ and are tested by sizeless-1.cpp.
This patch makes them work for C too.

Differential Revision: https://reviews.llvm.org/D76694
2020-03-25 10:52:43 +00:00
Richard Sandiford 578fb2501a [Sema][SVE] Allow ?: to select between SVE types in C
When compiling C, a ?: between two values of the same SVE type
currently gives an error such as:

  incompatible operand types ('svint8_t' (aka '__SVInt8_t') and 'svint8_t')

It's supposed to be valid to select between (cv-qualified versions of)
the same SVE type, so this patch adds that case.

These expressions already work for C++ and are tested by
SemaCXX/sizeless-1.cpp.

Differential Revision: https://reviews.llvm.org/D76693
2020-03-25 10:31:09 +00:00
Simon Tatham 8f1651ccea [ARM,MVE] Add missing tests for vqdmlash intrinsics.
Summary:
These were accidentally left out of D76123. I added tests for the
other three instructions in this small cross-product family (vqdmlah,
vqrdmlah, vqrdmlash) but missed this one.

Reviewers: miyuki

Reviewed By: miyuki

Subscribers: kristof.beyls, dmgreen, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76714
2020-03-25 09:46:16 +00:00
Haojian Wu 0788acbccb [AST] Build recovery expressions by default for C++.
Update the existing tests.

Reviewers: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76696
2020-03-25 09:00:48 +01:00
Adrian Prantl c025235e96 Revert "Allow remapping Clang module include paths"
to investigate why this commit broke a test in the LLDB testsuite.

This reverts commit dca920a904.
2020-03-24 17:57:34 -07:00
Adrian Prantl dca920a904 Allow remapping Clang module include paths
rdar://problem/55685132

Differential Revision: https://reviews.llvm.org/D76385
2020-03-24 17:14:27 -07:00
Eli Friedman 3f1defa6e2 [clang codegen] Clean up handling of vectors with trivial-auto-var-init.
The code was pretending to be doing something useful with vectors, but
really it was doing nothing: the element type of a vector is always a
scalar type, so constWithPadding would always just return the input constant.

Split off from D75661 so it can be reviewed separately.

While I'm here, also add testcase to show missing vector handling.

Differential Revision: https://reviews.llvm.org/D76528
2020-03-24 14:34:40 -07:00
Michael Liao 4f4e68799f [test][clang][driver] Add required features.
- to avoid false alarms on builds without that features.
2020-03-24 17:08:21 -04:00
Erik Pilkington de98cf92e3 [CodeGen] Add an alignment attribute to all sret parameters
This fixes a miscompile when the parameter is actually underaligned.
rdar://58316406

Differential revision: https://reviews.llvm.org/D74183
2020-03-24 15:31:57 -04:00
Alexander Belyaev 10bd8422d0 [ARM][CMSE] Fix clang/test/Driver/save-temps.c test.
Differential Revision: https://reviews.llvm.org/D76703
2020-03-24 15:24:14 +01:00
Haojian Wu 386f95e168 [Parser] Fix the assertion crash in ActOnStartOfSwitch stmt.
Summary:
After we parse the switch condition, we don't do the type check for
type-dependent expr (e.g. TypoExpr) (in Sema::CheckSwitchCondition), then the
TypoExpr is corrected to an invalid-type expr (in Sema::MakeFullExpr) and passed
to the ActOnStartOfSwitchStmt, which triggers the assertion.

Fix https://github.com/clangd/clangd/issues/311

Reviewers: sammccall

Subscribers: ilya-biryukov, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76592
2020-03-24 15:17:04 +01:00
Yaxun (Sam) Liu 2ae25647d1 [CUDA][HIP] Add -Xarch_device and -Xarch_host options
The argument after -Xarch_device will be added to the arguments for CUDA/HIP
device compilation and will be removed for host compilation.

The argument after -Xarch_host will be added to the arguments for CUDA/HIP
host compilation and will be removed for device compilation.

Differential Revision: https://reviews.llvm.org/D76520
2020-03-24 10:13:05 -04:00
Sam McCall 0b59982134
[CodeGen] Fix test attr-noreturn.c when run from my home directory 2020-03-24 13:59:16 +01:00
Momchil Velikov 080d046c91 [ARM][CMSE] Implement CMSE attributes
This patch adds CMSE attributes `cmse_nonsecure_call` and
`cmse_nonsecure_entry`.  As usual, specification is available here:
https://developer.arm.com/docs/ecm0359818/latest

Patch by Javed Absar, Bradley Smith, David Green, Momchil Velikov,
possibly others.

Differential Revision: https://reviews.llvm.org/D71129
2020-03-24 10:21:26 +00:00
Haojian Wu 733edf9750 [AST] Add RecoveryExpr to retain expressions on semantic errors
Normally clang avoids creating expressions when it encounters semantic
errors, even if the parser knows which expression to produce.

This works well for the compiler. However, this is not ideal for
source-level tools that have to deal with broken code, e.g. clangd is
not able to provide navigation features even for names that compiler
knows how to resolve.

The new RecoveryExpr aims to capture the minimal set of information
useful for the tools that need to deal with incorrect code:

source range of the expression being dropped,
subexpressions of the expression.
We aim to make constructing RecoveryExprs as simple as possible to
ensure writing code to avoid dropping expressions is easy.

Producing RecoveryExprs can result in new code paths being taken in the
frontend. In particular, clang can produce some new diagnostics now and
we aim to suppress bogus ones based on Expr::containsErrors.

We deliberately produce RecoveryExprs only in the parser for now to
minimize the code affected by this patch. Producing RecoveryExprs in
Sema potentially allows to preserve more information (e.g. type of an
expression), but also results in more code being affected. E.g.
SFINAE checks will have to take presence of RecoveryExprs into account.

Initial implementation only works in C++ mode, as it relies on compiler
postponing diagnostics on dependent expressions. C and ObjC often do not
do this, so they require more work to make sure we do not produce too
many bogus diagnostics on the new expressions.

See documentation of RecoveryExpr for more details.

original patch from Ilya
This change is based on https://reviews.llvm.org/D61722

Reviewers: sammccall, rsmith

Reviewed By: sammccall, rsmith

Tags: #clang

Differential Revision: https://reviews.llvm.org/D69330
2020-03-24 09:20:37 +01:00
Jun Ma d0f4af8f30 [Coroutines] Insert lifetime intrinsics even O0 is used
Differential Revision: https://reviews.llvm.org/D76119
2020-03-24 13:41:55 +08:00
Pierre Habouzit 20d704a75e [objc_direct] also go through implementations when looking for clashes
Some methods are sometimes declared in the @implementation blocks which
can cause undiagnosed clashes.

Just write a checkObjCDirectMethodClashes() for this purpose.

Also make sure that "unavailable" selectors do not inherit
objc_direct_members.

Differential Revision: https://reviews.llvm.org/D76643
Signed-off-by: Pierre Habouzit <phabouzit@apple.com>
Radar-ID: rdar://problem/59332804, rdar://problem/59782963
2020-03-23 20:49:09 -07:00
Alexey Bataev 1236eb6c31 [OPENMP50]Add 'default' modifier in reduction clauses.
Added full support for 'default' modifier in the reduction clauses.
2020-03-23 18:18:08 -04:00
Richard Smith 502915c619 PR45142: 'template ~X<T>' is ill-formed; reject it rather than crashing. 2020-03-23 15:07:06 -07:00
Alexandre Ganea 5896e2df45 [Clang] Fix HIP tests when running on Windows with the LLVM toolchain is in the path
On Windows, when the LLVM toolchain is in the current path (%PATH%), fusing the linker yields c:\{path}\lld.exe whereas the hip tests did not expect the .exe part.
This only happens if LLD is not present in the build folder, which consequently makes the code in Driver::GetProgramPath() to fall back to %PATH% and platform-specific search, which includes the .exe part (see https://github.com/llvm/llvm-project/blob/master/clang/lib/Driver/Driver.cpp#L4733).

Differential Revision: https://reviews.llvm.org/D76631
2020-03-23 16:54:48 -04:00
Matt Arsenault 3f533006ba AMDGPU: Emit llvm.fshr for __builtin_amdgcn_alignbit
These are equivalent. The generic rotate builtins do not directly map
to the fshr intrinsic.
2020-03-23 16:51:25 -04:00
Alexey Bataev 63828a35da [OPENMP50]Bassic support for exclusive clause.
Added basic support (parsing/sema/serialization) for exclusive clause in
scan directives.
2020-03-23 13:12:52 -04:00
Adam Balogh ccc0d35181 [Analyzer] IteratorRangeChecker verify `std::advance()`, `std::prev()` and `std::next()`
Upon calling one of the functions `std::advance()`, `std::prev()` and
`std::next()` iterators could get out of their valid range which leads
to undefined behavior. If all these funcions are inlined together with
the functions they call internally (e.g. `__advance()` called by
`std::advance()` in some implementations) the error is detected by
`IteratorRangeChecker` but the bug location is inside the STL
implementation. Even worse, if the budget runs out and one of the calls
is not inlined the bug remains undetected. This patch fixes this
behavior: all the bugs are detected at the point of the STL function
invocation.

Differential Revision: https://reviews.llvm.org/D76379
2020-03-23 17:33:26 +01:00
Yaxun (Sam) Liu b670ab7b6b recommit 1b978ddba0 [CUDA][HIP][OpenMP] Emit deferred diagnostics by a post-parsing AST travese
Differential Revision: https://reviews.llvm.org/D70172
2020-03-23 12:09:07 -04:00
Adam Balogh 60bad941a1 [Analyzer] Iterator Modeling - Model `std::advance()`, `std::prev()` and `std::next()`
Whenever the analyzer budget runs out just at the point where
`std::advance()`, `std::prev()` or `std::next()` is invoked the function
are not inlined. This results in strange behavior such as
`std::prev(v.end())` equals `v.end()`. To prevent this model these
functions if they were not inlined. It may also happend that although
`std::advance()` is inlined but a function it calls inside (e.g.
`__advance()` in some implementations) is not. This case is also handled
in this patch.

Differential Revision: https://reviews.llvm.org/D76361
2020-03-23 15:29:55 +01:00
Momchil Velikov 6081ccf4a3 Apply function attributes through array declarators
There's inconsistency in handling array types between the
`distributeFunctionTypeAttrXXX` functions and the
`FunctionTypeUnwrapper` in `SemaType.cpp`.

This patch lets `FunctionTypeUnwrapper` apply function type attributes
through array types.

Differential Revision: https://reviews.llvm.org/D75109
2020-03-23 11:03:13 +00:00
Guillaume Chatelet d260a10d98 [clang] Fix crash during template sema checking
Summary: If the size parameter of `__builtin_memcpy_inline` comes from an un-instantiated template parameter current code would crash.

Reviewers: efriedma, courbet

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76504
2020-03-21 12:42:06 +01:00
Thomas Lively de6cd3e836 [WebAssembly] Add SIMD integer abs builtins
Summary:
Since the conditional operator cannot be used with vector conditions
in C, we need a builtin to be able to express this operation in C
source.

Reviewers: aheejin

Subscribers: dschuff, sbc100, jgravelle-google, sunfish, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76538
2020-03-21 00:21:24 -07:00
Richard Smith ced7617c38 PR45267: Don't reject pure-specifiers with escaped newlines in their '0' token. 2020-03-20 18:44:55 -07:00
Akira Hatanaka d35a454170 [CodeGen] Emit destructor calls to destruct non-trivial C struct objects
returned by function calls or loaded from volatile objects

rdar://problem/51867864

Differential Revision: https://reviews.llvm.org/D66094
2020-03-20 18:34:22 -07:00
Adrian Prantl ceae47143b Allow remapping the sysroot with -fdebug-prefix-map.
<rdar://problem/55685132>

Differential Revision: https://reviews.llvm.org/D76393
2020-03-20 16:27:50 -07:00
Adrian Prantl bde15de3ca Revert "Allow remapping the sysroot with -fdebug-prefix-map."
This reverts commit 6725c4836a.
2020-03-20 16:27:23 -07:00
Adrian Prantl 6725c4836a Allow remapping the sysroot with -fdebug-prefix-map.
<rdar://problem/55685132>

Differential Revision: https://reviews.llvm.org/D76393
2020-03-20 15:52:39 -07:00
Sylvain Audi f75f19c237 [Clang][test] Add .i files for test discovery
The .i files in the clang tests (2 files) were not run by lit :
clang/test/CodeGen/debug-info-preprocessed-file.i
clang/test/FrontEnd/processed-input.i

Differential Revision: https://reviews.llvm.org/D75853
2020-03-20 18:21:27 -04:00
Adrian Prantl 43580a5c5a Allow remapping Clang module skeleton CU references with -fdebug-prefix-map
Differential Revision: https://reviews.llvm.org/D76383
2020-03-20 15:15:56 -07:00
Richard Smith dc4259d5a3 [c++20] Further extend the set of comparisons broken by C++20 that we
accept as an extension.

This attempts to accept the same cases a GCC, plus cases where a
comparison is rewritten to an operator== with an integral but non-bool
return type; this is sufficient to avoid most problems with various
major open-source projects (such as ICU) and appears to fix all but one
of the comparison-related C++20 build breaks in LLVM.

This approach is being pursued for standardization.
2020-03-20 14:22:48 -07:00
Adrian Prantl 97f490d87b Don't set the isOptimized flag in module skeleton DICompileUnits.
It's not used for anything.
2020-03-20 14:18:15 -07:00
Adrian Prantl 079c6ddaf5 Correctly initialize the DW_AT_comp_dir attribute of Clang module skeleton CUs
Before this patch a Clang module skeleton CU would have a
DW_AT_comp_dir pointing to the directory of the module map file, and
this information was not used by anyone. Even worse, LLDB actually
resolves relative DWO paths by appending it to DW_AT_comp_dir. This
patch sets it to the same directory that is used as the main CU's
compilation directory, which would make the LLDB code work.

Differential Revision: https://reviews.llvm.org/D76377
2020-03-20 14:18:14 -07:00
Alexey Bataev 9b95929a26 [OPENMP50]Do not allow several scan directives in the same parent
region.

According to OpenMP 5.0, exactly one scan directive must appear in the loop body of an enclosing worksharing-loop, worksharing-loop SIMD, or simd construct on which a reduction clause with the inscan modifier is present.
2020-03-20 15:45:31 -04:00
Alexey Bataev 06dea73307 [OPENMP50]Initial support for inclusive clause.
Added parsing/sema/serialization support for inclusive clause in scan
directive.
2020-03-20 14:20:38 -04:00
Gabor Marton ededa65d55 [analyzer] StdLibraryFunctionsChecker: Add NotNull Arg Constraint
Reviewers: NoQ, Szelethus, balazske, gamesh411, baloghadamsoftware, steakhal

Subscribers: whisperity, xazax.hun, szepet, rnkovacs, a.sidorin, mikhail.ramalho, donat.nagy, dkrupp, Charusso, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75063
2020-03-20 17:34:29 +01:00
Reid Kleckner ce5173c0e1 Use FinishThunk to finish musttail thunks
FinishThunk, and the invariant of setting and then unsetting
CurCodeDecl, was added in 7f416cc426 (2015). The invariant didn't
exist when I added this musttail codepath in ab2090d107 (2014).
Recently in 28328c3771, I started using this codepath on non-Windows
platforms, and users reported problems during release testing (PR44987).

The issue was already present for users of EH on i686-windows-msvc, so I
added a test for that case as well.

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D76444
2020-03-20 09:02:21 -07:00
Erich Keane ffcc076a2b [[Clang CallGraph]] CallGraph should still record calls to decls.
Discovered by a downstream user, we found that the CallGraph ignores
callees unless they are defined.  This seems foolish, and prevents
combining the report with other reports to create unified reports.
Additionally, declarations contain information that is likely useful to
consumers of the CallGraph.

This patch implements this by splitting the includeInGraph function into
two versions, the current one plus one that is for callees only.  The
only difference currently is that includeInGraph checks for a body, then
calls includeCalleeInGraph.

Differential Revision: https://reviews.llvm.org/D76435
2020-03-20 08:55:23 -07:00