Commit Graph

1502 Commits

Author SHA1 Message Date
Ivan Donchevskii 878271b294 [libclang] Fix CXTranslationUnit_KeepGoing
Since
  commit 56f548bbbb7e4387a69708f70724d00e9e076153
  [modules] Round-trip -Werror flag through explicit module build.
the behavior of CXTranslationUnit_KeepGoing changed:
Unresolved #includes are fatal errors again. As a consequence, some
templates are not instantiated and lead to confusing errors.

Revert to the old behavior: With CXTranslationUnit_KeepGoing fatal
errors are mapped to errors.

Patch by Nikolai Kosjar.

Differential Revision: https://reviews.llvm.org/D58501

llvm-svn: 355586
2019-03-07 10:13:50 +00:00
Volodymyr Sapsai bc72061edf [index] Fixup for r354942. Specify target in test to achieve stable mangling.
llvm-svn: 354946
2019-02-27 01:37:43 +00:00
Volodymyr Sapsai 4b0f7f99ce [index] Improve indexing support for MSPropertyDecl.
Currently the symbol for MSPropertyDecl has kind `SymbolKind::Unknown`
which can trip up various indexing tools.

rdar://problem/46764224

Reviewers: akyrtzi, benlangmuir, jkorous

Reviewed By: jkorous

Subscribers: dexonsmith, cfe-commits, jkorous, jdoerfert, arphaman

Differential Revision: https://reviews.llvm.org/D57628

llvm-svn: 354942
2019-02-27 01:04:53 +00:00
Emilio Cobos Alvarez 0d76dc285c [libclang] Avoid crashing when getting layout info of an undeduced type.
When the type is not deducible, return an error instead of crashing.

This fixes https://bugs.llvm.org/show_bug.cgi?id=40813.

Differential Revision: https://reviews.llvm.org/D58569

llvm-svn: 354885
2019-02-26 15:04:18 +00:00
Kadir Cetinkaya a87ada0dad [clang][Index] Visit UsingDecls and generate USRs for them
Summary:
Add indexing of UsingDecl itself.
Also enable generation of USRs for UsingDecls, using the qualified name of the
decl.

Reviewers: ilya-biryukov, akyrtzi

Subscribers: arphaman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58340

llvm-svn: 354878
2019-02-26 14:23:12 +00:00
Emilio Cobos Alvarez 0a3fe502e6 [libclang] Expose warn_unused and warn_unused_result attributes.
This is helpful to properly detect them, and fixing issues like
https://github.com/rust-lang/rust-bindgen/issues/1518.

Differential Revision: https://reviews.llvm.org/D58570

llvm-svn: 354824
2019-02-25 21:24:52 +00:00
Kadir Cetinkaya f53621bb0f [clang][Index] Fix usage of IndexImplicitInstantiation
Summary:
Indexing context was skipping explicit template instantiations as well.
This patch makes sure it only skips implicit ones.

Subscribers: arphaman, jdoerfert, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58189

llvm-svn: 354262
2019-02-18 11:30:43 +00:00
Sven van Haastregt dc2c93017f [libclang] Add attribute support for 'convergent'.
This bumps CINDEX_VERSION_MINOR up (to 51).

Patch by Hsin-Hsiao Lin.

Differential Revision: https://reviews.llvm.org/D57946

llvm-svn: 353690
2019-02-11 11:00:56 +00:00
Nico Weber c9444623e8 Re-disable pch-from-libclang.c after 352803, some buildbots are still unhappy
llvm-svn: 352809
2019-01-31 22:57:52 +00:00
Nico Weber 0abcafd8a4 Make clang/test/Index/pch-from-libclang.c pass in more places
- fixes the test on macOS with LLVM_ENABLE_PIC=OFF
- together with D57343, gets the test to pass on Windows
- makes it run everywhere (it seems to just pass on Linux)

The main change is to pull out the resource directory computation into a
function shared by all 3 places that do it. In CIndexer.cpp, this now works no
matter if libclang is in lib/ or bin/ or statically linked to a binary in bin/.


Differential Revision: https://reviews.llvm.org/D57345

llvm-svn: 352803
2019-01-31 22:15:32 +00:00
Leonard Chan 009f9e8231 [Sema] Fix Modified Type in address_space AttributedType
This is a fix for https://reviews.llvm.org/D51229 where we pass the
address_space qualified type as the modified type of an AttributedType. This
change now instead wraps the AttributedType with either the address_space
qualifier or a DependentAddressSpaceType.

Differential Revision: https://reviews.llvm.org/D55447

llvm-svn: 351997
2019-01-24 00:11:35 +00:00
Ivan Donchevskii c05e6f430e [libclang] Fix clang_Cursor_isAnonymous
Use the same logic as in TypePrinter::printTag to determine that the tag is anonymous and the separate check for namespaces.

Differential Revision: https://reviews.llvm.org/D54996

llvm-svn: 350805
2019-01-10 09:34:44 +00:00
Alex Lorenz ddc62017ea Fix incorrect column numbers in test from r350282.
After the test was reformatted using clang-format the numbers became invalid.

llvm-svn: 350283
2019-01-03 01:30:50 +00:00
Alex Lorenz 977ffd7b8f [libclang] CoroutineBody/Coreturn statements are UnexposedStmts and not Exprs
This change ensures that the libclang CXCursor represents the CoroutineBody
and the Coreturn statement using the appropriate CXCursor_UnexposedStmt kind
instead of CXCursor_UnexposedExpr. The problem with CXCursor_UnexposedExpr is
that the consumer functions assumed that CoroutineBody/Coreturn statements
were valid expressions and performed an invalid downcast to Expr causing
assertion failures or other crashes.

rdar://40204290

llvm-svn: 350282
2019-01-03 01:13:33 +00:00
Haojian Wu e2a27b3f76 [Index] Index paremeters in lambda expressions.
Summary: This fixes clangd couldn't find references for lambda parameters.

Reviewers: ilya-biryukov

Subscribers: ioeric, arphaman, kadircet, cfe-commits

Differential Revision: https://reviews.llvm.org/D55437

llvm-svn: 349626
2018-12-19 13:44:41 +00:00
Haojian Wu ef87c26796 [AST] Unify the code paths of traversing lambda expressions.
Summary:
This supposes to be a non-functional change. We have two code paths when
traversing lambda expressions:

1) traverse the function proto typeloc when parameters and return type
are explicit;
2) otherwise fallback to traverse parameter decls and return type loc
individually;

This patch unifies the code path to always traverse parameters and
return type, rather than relying on traversing the full type-loc.

Reviewers: ilya-biryukov

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D55820

llvm-svn: 349494
2018-12-18 15:29:12 +00:00
Ilya Biryukov 4974d75d7c [CodeComplete] Fill preferred type on binary expressions
Reviewers: kadircet

Reviewed By: kadircet

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D55648

llvm-svn: 349053
2018-12-13 16:06:11 +00:00
Volodymyr Sapsai 978be4c1a3 [Preprocessor] Don't avoid entering included files after hitting a fatal error.
Change in r337953 violated the contract for `CXTranslationUnit_KeepGoing`:

> Do not stop processing when fatal errors are encountered.

Use different approach to fix long processing times with multiple inclusion
cycles. Instead of stopping preprocessing for fatal errors, do this after
reaching the max allowed include depth and only for the files that were
processed already. It is likely but not guaranteed those files cause a cycle.

rdar://problem/46108547

Reviewers: erik.pilkington, arphaman

Reviewed By: erik.pilkington

Subscribers: jkorous, dexonsmith, ilya-biryukov, Dmitry.Kozhevnikov

Differential Revision: https://reviews.llvm.org/D55095

llvm-svn: 348641
2018-12-07 20:29:54 +00:00
Ivan Donchevskii 60b7103ce8 [libclang] Fix clang_Cursor_getNumArguments and clang_Cursor_getArgument for CXXConstructExpr
Constructors have the same methods for arguments as call expressions.
Let's provide a way to get their arguments the same way.

Differential Revision: https://reviews.llvm.org/D54934

llvm-svn: 347654
2018-11-27 12:02:39 +00:00
Sam McCall 8e9baa3f17 [CodeComplete] Penalize inherited ObjC properties for auto-completion
Summary:
Similar to auto-completion for ObjC methods, inherited properties
should be penalized / direct class and category properties should
be prioritized.

Note that currently, the penalty for using a result from a base class
(CCD_InBaseClass) is equal to the penalty for using a method as a
property (CCD_MethodAsProperty).

Reviewers: jkorous, sammccall, akyrtzi, arphaman, benlangmuir

Reviewed By: sammccall, akyrtzi

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D53900

llvm-svn: 347352
2018-11-20 22:06:54 +00:00
Michael Wu 260e962402 Support Swift in platform availability attribute
Summary: This adds support for Swift platform availability attributes. It's largely a port of the changes made to https://github.com/apple/swift-clang/ for Swift availability attributes. Specifically, 84b5a21c31 and e5b87f265a . The implementation of attribute_availability_swift is a little different and additional tests in test/Index/availability.c were added.

Reviewers: manmanren, friss, doug.gregor, arphaman, jfb, erik.pilkington, aaron.ballman

Reviewed By: aaron.ballman

Subscribers: aaron.ballman, ColinKinloch, jrmuizel, cfe-commits

Differential Revision: https://reviews.llvm.org/D50318

llvm-svn: 346633
2018-11-12 02:44:33 +00:00
Andrew Savonichev 3fee351867 [OpenCL] Add support of cl_intel_device_side_avc_motion_estimation extension
Summary:
Documentation can be found at https://www.khronos.org/registry/OpenCL/extensions/intel/cl_intel_device_side_avc_motion_estimation.txt

Patch by Kristina Bessonova


Reviewers: Anastasia, yaxunl, shafik

Reviewed By: Anastasia

Subscribers: arphaman, sidorovd, AlexeySotkin, krisb, bader, asavonic, cfe-commits

Differential Revision: https://reviews.llvm.org/D51484

llvm-svn: 346392
2018-11-08 11:25:41 +00:00
Andrew Savonichev 3b12b7e702 Revert r346326 [OpenCL] Add support of cl_intel_device_side_avc_motion_estimation
This patch breaks Index/opencl-types.cl LIT test:

Script:
--
: 'RUN: at line 1';   stage1/bin/c-index-test -test-print-type llvm/tools/clang/test/Index/opencl-types.cl -cl-std=CL2.0 | stage1/bin/FileCheck llvm/tools/clang/test/Index/opencl-types.cl
--
Command Output (stderr):
--
llvm/tools/clang/test/Index/opencl-types.cl:3:26: warning: unsupported OpenCL extension 'cl_khr_fp16' - ignoring [-Wignored-pragmas]
llvm/tools/clang/test/Index/opencl-types.cl:4:26: warning: unsupported OpenCL extension 'cl_khr_fp64' - ignoring [-Wignored-pragmas]
llvm/tools/clang/test/Index/opencl-types.cl:8:9: error: use of type 'double' requires cl_khr_fp64 extension to be enabled
llvm/tools/clang/test/Index/opencl-types.cl:11:8: error: declaring variable of type 'half' is not allowed
llvm/tools/clang/test/Index/opencl-types.cl:15:3: error: use of type 'double' requires cl_khr_fp64 extension to be enabled
llvm/tools/clang/test/Index/opencl-types.cl:16:3: error: use of type 'double4' (vector of 4 'double' values) requires cl_khr_fp64 extension to be enabled
llvm/tools/clang/test/Index/opencl-types.cl:26:26: warning: unsupported OpenCL extension 'cl_khr_gl_msaa_sharing' - ignoring [-Wignored-pragmas]
llvm/tools/clang/test/Index/opencl-types.cl:35:44: error: use of type '__read_only image2d_msaa_t' requires cl_khr_gl_msaa_sharing extension to be enabled
llvm/tools/clang/test/Index/opencl-types.cl:36:49: error: use of type '__read_only image2d_array_msaa_t' requires cl_khr_gl_msaa_sharing extension to be enabled
llvm/tools/clang/test/Index/opencl-types.cl:37:49: error: use of type '__read_only image2d_msaa_depth_t' requires cl_khr_gl_msaa_sharing extension to be enabled
llvm/tools/clang/test/Index/opencl-types.cl:38:54: error: use of type '__read_only image2d_array_msaa_depth_t' requires cl_khr_gl_msaa_sharing extension to be enabled

llvm-svn: 346338
2018-11-07 18:34:19 +00:00
Andrew Savonichev 35dfce723c [OpenCL] Add support of cl_intel_device_side_avc_motion_estimation extension
Summary:
Documentation can be found at https://www.khronos.org/registry/OpenCL/extensions/intel/cl_intel_device_side_avc_motion_estimation.txt

Patch by Kristina Bessonova


Reviewers: Anastasia, yaxunl, shafik

Reviewed By: Anastasia

Subscribers: arphaman, sidorovd, AlexeySotkin, krisb, bader, asavonic, cfe-commits

Differential Revision: https://reviews.llvm.org/D51484

llvm-svn: 346326
2018-11-07 15:44:01 +00:00
Ilya Biryukov ebf0a6d75d [CodeComplete] Do not complete self-initializations
Summary:
Removes references to initialized variable from the following completions:

    int x = ^;

Handles only the trivial cases where the variable name is completed
immediately at the start of initializer or assignment, more complicated
cases aren't covered, e.g. these completions still contain 'x':

    // More complicated expressions.
    int x = foo(^);
    int x = 10 + ^;
    // Other kinds of initialization.
    int x{^};
    int x(^);
    // Constructor initializers.
    struct Foo {
      Foo() : x(^) {}
      int x;
    };

We should address those in the future, but they are outside of the scope of
this initial change.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D54156

llvm-svn: 346301
2018-11-07 10:02:31 +00:00
Kadir Cetinkaya fabaaaaadb [clang] Improve ctor initializer completions.
Summary:
Instead of providing generic "args" for member and base class
initializers, tries to fetch relevant constructors and show their signatures.

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: ZaMaZaN4iK, eraman, arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D53654

llvm-svn: 345844
2018-11-01 15:54:18 +00:00
Ilya Biryukov 47e06bb81f [Sema] Do not show unused parameter warnings when body is skipped
Summary: Without the function body, we cannot determine is parameter was used.

Reviewers: ioeric, sammccall

Reviewed By: sammccall

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D53456

llvm-svn: 345122
2018-10-24 08:29:24 +00:00
Kadir Cetinkaya 6d57266a8c [clang] Fix a null pointer dereference.
Summary:
Sometimes expression inside switch statement can be invalid, for
example type might be incomplete. In those cases code were causing a null
pointer dereference. This patch fixes that.

Reviewers: sammccall, ioeric, hokein

Reviewed By: sammccall

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D53561

llvm-svn: 345029
2018-10-23 13:49:37 +00:00
Eric Liu 2bfd3f5eb7 [CodeComplete] Fix accessibility of protected members when accessing members implicitly.
Reviewers: ilya-biryukov

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D53369

llvm-svn: 344889
2018-10-22 08:47:31 +00:00
Eric Liu b87c6eba2e [CodeComplete] Make sure keyword 'template' is added even when code pattern is disabled.
Reviewers: sammccall, hokein

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D53284

llvm-svn: 344509
2018-10-15 12:37:23 +00:00
Fangrui Song 63a8b6c304 [Index] Use locations to uniquify function-scope BindingDecl USR
Summary:
This makes BindingDecl's of the same name have different USRs, so that references can be correctly attributed.

    int a[1] = {};
    { auto [x] = a; x; }
    { auto [x] = a; x; }

Reviewers: akyrtzi, arphaman, rsmith, hokein

Reviewed By: hokein

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52445

llvm-svn: 344010
2018-10-09 01:02:56 +00:00
Haojian Wu e94c869434 [Index] Respect "IndexFunctionLocals" option for type loc.
Summary:
Previously, clang index ignored local symbols defined in the function body even
IndexFunctionLocals is true.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: ilya-biryukov, ioeric, arphaman, kadircet, cfe-commits

Differential Revision: https://reviews.llvm.org/D52877

llvm-svn: 343767
2018-10-04 11:03:55 +00:00
Eric Liu b91e08197c [CodeComplete] Re-fix accessibilty of protected members from base class.
Summary:
The initial fix (r337453) had bug and was partially reverted (r338255).
This simplies the original fix by explicitly passing the naming class to the
completion consumer.

Reviewers: ilya-biryukov

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52647

llvm-svn: 343575
2018-10-02 10:29:00 +00:00
Fangrui Song f750f7f3fb [Index] Report specialization bases as references when IndexImplicitInstantiation is true
Summary:
    template <typename T> struct B {};
    template <typename T> struct D : B<T> {}; // `B` was not reported as a reference

This patch fixes this.

Reviewers: akyrtzi, arphaman, devnexen

Reviewed By: devnexen

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52331

llvm-svn: 342831
2018-09-23 08:23:48 +00:00
Eric Liu 88de9f6579 [Sema] Do not load macros from preamble when LoadExternal is false.
Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52079

llvm-svn: 342528
2018-09-19 09:34:55 +00:00
Argyrios Kyrtzidis 32e5d8626d [index] Enhance indexing for module references
* Create a USR for the occurrences of the 'module' symbol kind
* Record module references for each identifier in an import declaration

llvm-svn: 342484
2018-09-18 15:02:56 +00:00
Kadir Cetinkaya a32d253f10 [clang] Make sure codecompletion is called for calls even when inside a token.
Summary:
Currently CodeCompleteCall only gets called after a comma or parantheses. This
patch makes sure it is called even at the cases like:
```foo(1^);```

Reviewers: ilya-biryukov, ioeric, hokein

Reviewed By: ilya-biryukov

Subscribers: MaskRay, jkorous, arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D51038

llvm-svn: 341824
2018-09-10 13:46:28 +00:00
Ivan Donchevskii 38bdf54b49 [libclang] Return the proper pointee type for 'auto' deduced to pointer
Currently the resulting type is always invalid in such case.

Differential Revision: https://reviews.llvm.org/D51281

llvm-svn: 341656
2018-09-07 13:23:51 +00:00
Alexey Sotkin 260830eb10 [Index] Update tests allowing double4 type to be "invalid"
Fixes test failure after r341309

llvm-svn: 341314
2018-09-03 12:43:26 +00:00
Argyrios Kyrtzidis 7c3a12ff42 [index] Introduce 'ProtocolInterface' as part of SymbolPropertySet
This is useful to directly infer that a method or property is from a protocol interface
at the point of the symbol occurrences.

llvm-svn: 340696
2018-08-26 06:27:23 +00:00
Ivan Donchevskii b3ae2bc62b [libclang] Fix cursors for arguments of Subscript and Call operators
The DeclRefExpr of CXXOperatorCallExpr refering to the custom operator
is visited before the arguments to the operator call. For the Call and
Subscript operator the range of this DeclRefExpr includes the whole call
expression, so that all tokens in that range were mapped to the operator
function, even the tokens of the arguments.

Fix this by ensuring that this particular DeclRefExpr is visited last.

Fixes PR25775.

Fix by Nikolai Kosjar.

Differential Revision: https://reviews.llvm.org/D40481

llvm-svn: 340521
2018-08-23 09:48:11 +00:00
Argyrios Kyrtzidis c0cd01764f [index] For an ObjC message call, also record as receivers the protocols if they are present in the ObjC type
llvm-svn: 340109
2018-08-17 23:50:59 +00:00
Michael Wu 58d837d347 [libclang 8/8] Add support for the flag_enum attribute
Summary:
This adds support to libclang for reading the flag_enum attribute.

This also bumps CINDEX_VERSION_MINOR for this patch series.

Reviewers: yvvan, jbcoe

Reviewed By: yvvan

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D49635

llvm-svn: 338820
2018-08-03 05:55:40 +00:00
Michael Wu 6e88f5334c [libclang 7/8] Add support for getting property setter and getter names
Summary: This allows libclang to access the actual names of property setters and getters without needing to go through the indexer API. Usually default names are used, but the property can specify a different name.

Reviewers: yvvan, jbcoe

Reviewed By: yvvan

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D49634

llvm-svn: 338816
2018-08-03 05:38:29 +00:00
Michael Wu 40ff105663 [libclang 6/8] Add support for reading implicit attributes
Summary:
Having access to implicit attributes is sometimes useful so users of libclang don't have to duplicate some of the logic in sema.

This depends on D49081 since it also adds a CXTranslationUnit flag.

Reviewers: yvvan, jbcoe

Reviewed By: yvvan

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D49631

llvm-svn: 338815
2018-08-03 05:20:23 +00:00
Michael Wu d092d0b179 [libclang 5/8] Add support for ObjC attributes without args
Summary:
This adds support to libclang for identifying ObjC related attributes that don't take arguments.

All attributes but NSObject and NSConsumed are tested.

Reviewers: yvvan, jbcoe

Reviewed By: yvvan

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D49127

llvm-svn: 338813
2018-08-03 05:03:22 +00:00
Michael Wu 7649e62906 [libclang 4/8] Add the clang_Type_getNullability() API
Summary:
This patch adds a clang-c API for querying the nullability of an AttributedType.

The test here also tests D49081

Reviewers: yvvan, jbcoe

Reviewed By: yvvan

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D49082

llvm-svn: 338809
2018-08-03 04:38:04 +00:00
Michael Wu ced99b99d1 [libclang 2/8] Add support for ObjCTypeParam
Summary:
This patch adds support to the libclang API for identifying ObjCTypeParams in CXTypes.

This patch depends on D49063 since both patches add new values to CXTypeKind.

Reviewers: yvvan, jbcoe

Reviewed By: yvvan

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D49066

llvm-svn: 338807
2018-08-03 04:02:40 +00:00
Michael Wu 9c85261559 [libclang 1/8] Add support for ObjCObjectType
Summary: This patch adds support to the clang-c API for identifying ObjCObjects in CXTypes, enumerating type args and protocols on ObjCObjectTypes, and retrieving the base type of ObjCObjectTypes. Currently only ObjCInterfaceTypes are exposed, which do not have type args or protocols.

Reviewers: yvvan, jbcoe

Reviewed By: yvvan

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D49063

llvm-svn: 338804
2018-08-03 03:03:20 +00:00
Michael Kruse dc5ce72afa Append new attributes to the end of an AttributeList.
Recommit of r335084 after revert in r335516.

... instead of prepending it at the beginning (the original behavior
since implemented in r122535 2010-12-23). This builds up an
AttributeList in the the order in which the attributes appear in the
source.

The reverse order caused nodes for attributes in the AST (e.g. LoopHint)
to be in the reverse order, and therefore printed in the wrong order in
-ast-dump. Some TODO comments mention this. The order was explicitly
reversed for enable_if attribute overload resolution and name mangling,
which is not necessary anymore with this patch.

The change unfortunately has some secondary effect, especially on
diagnostic output. In the simplest cases, the CHECK lines or expected
diagnostic were changed to the the new output. If the kind of
error/warning changed, the attributes' order was changed instead.

This unfortunately causes some 'previous occurrence here' hints to be
textually after the main marker. This typically happens when attributes
are merged, but are incompatible to each other. Interchanging the role
of the the main and note SourceLocation will also cause the case where
two different declaration's attributes (in contrast to multiple
attributes of the same declaration) are merged to be reverse. There is
no easy fix because sometimes previous attributes are merged into a new
declaration's attribute list, sometimes new attributes are added to a
previous declaration's attribute list. Since 'previous occurrence here'
pointing to locations after the main marker is not rare, I left the
markers as-is; it is only relevant when the attributes are declared in
the same declaration anyway.

Differential Revision: https://reviews.llvm.org/D48100

llvm-svn: 338800
2018-08-03 01:21:16 +00:00