Commit Graph

76807 Commits

Author SHA1 Message Date
Stephen Kelly db8fac140e Implement Attr dumping in terms of visitors
Remove now-vestigial dumpType and dumpBareDeclRef methods. The old
tablegen generated code used to expect them to be present, but the new
generated code has no such requirement.

Reviewers: aaron.ballman

Subscribers: mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D55492

llvm-svn: 350958
2019-01-11 19:16:01 +00:00
Stephen Kelly 0df805db73 [ASTDump] Add utility for dumping a label with child nodes
Summary:
Use it to add optional label nodes to Stmt dumps.  This preserves
behavior of InitExprList dump:

// CHECK-NEXT: `-InitListExpr {{.+}} <col:13, col:15> 'U [3]'
// CHECK-NEXT:   |-array_filler: InitListExpr {{.+}} <col:15> 'U' field Field {{.+}} 'i' 'int'
// CHECK-NEXT:   `-InitListExpr {{.+}} <col:14> 'U' field Field {{.+}} 'i' 'int'
// CHECK-NEXT:     `-IntegerLiteral {{.+}} <col:14> 'int' 1

Reviewers: aaron.ballman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D55488

llvm-svn: 350957
2019-01-11 19:11:17 +00:00
Serge Guelton f8dded2684 [Bug 39548][Clang] PGO bootstrap fails with python3: errors in perf-helper.py
Current clang fail to bootstrap in PGO mode when only python3 is available,
because perf-helper.py is not compatible with python3.

Commited on behalf of  Romain Geissler.

Differential Revision: https://reviews.llvm.org/D54071

llvm-svn: 350955
2019-01-11 19:04:48 +00:00
Evandro Menezes 47bcdcdd55 [test] Update support for Exynos M4 (NFC)
Update test cases for Exynos M4.

llvm-svn: 350954
2019-01-11 18:54:41 +00:00
Vedant Kumar a61edd5018 [MergeFunc] Update clang test for r350939
In r350939, the MergeFunc pass learned to erase duplicate functions
which are discardable if unused.

llvm-svn: 350952
2019-01-11 18:51:02 +00:00
Teresa Johnson 84cecfcb3d [LTO] Add option to enable LTOUnit splitting, and disable unless needed
Summary:
Adds a new -f[no]split-lto-unit flag that is disabled by default to
control module splitting during ThinLTO. It is automatically enabled
for -fsanitize=cfi and -fwhole-program-vtables.

The new EnableSplitLTOUnit codegen flag is passed down to llvm
via a new module flag of the same name.

Depends on D53890.

Reviewers: pcc

Subscribers: ormris, mehdi_amini, inglorion, eraman, steven_wu, dexonsmith, cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D53891

llvm-svn: 350949
2019-01-11 18:32:07 +00:00
George Karpenkov dfd6f7db9b [analyzer] [NFC] Fix the FIXME in tests
llvm-svn: 350946
2019-01-11 18:12:49 +00:00
George Karpenkov 3a50a9fe74 [attributes] Extend os_returns_(not_?)_retained attributes to parameters
When applied to out-parameters, the attributes specify the expected lifetime of the written-into object.

Additionally, introduce OSReturnsRetainedOn(Non)Zero attributes, which
specify that an ownership transfer happens depending on a return code.

Differential Revision: https://reviews.llvm.org/D56292

llvm-svn: 350942
2019-01-11 18:02:08 +00:00
Erich Keane 473cfda1f4 Fix a pair of Wfallthrough warnings in ScanfFormatString.
Change-Id: Ia73a34fdd93fc974224583505f9e6432493cb0da
llvm-svn: 350941
2019-01-11 18:01:40 +00:00
Chris Kennelly 8dfa4ad981 Implementation Feature Test Macros for P0722R3
Summary:
P1353R0, adopted in San Diego, specified an implementation feature test macro for destroying delete (P0722R3).

The implementation of the feature (https://reviews.llvm.org/rL315662) is not guarded behind a flag, so the macro is not conditional on language version.

Reviewers: rsmith

Reviewed By: rsmith

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D55741

llvm-svn: 350934
2019-01-11 17:09:22 +00:00
Bjorn Pettersson 03c9f684d8 Silence -Wsign-compare in unittests
llvm-svn: 350933
2019-01-11 16:53:45 +00:00
Akira Hatanaka 6c50e1fe0f [Sema] Make canPassInRegisters return true if the CXXRecordDecl passed
to it is a trivial_abi class.

A class that has all of its copy and move constructors deleted can still
be passed or returned in registers if the class is annotated with
trivial_abi.

This fixes PR39683.

llvm-svn: 350920
2019-01-11 07:06:38 +00:00
Akira Hatanaka d458ceda24 [Sema] If CheckPlaceholderExpr rewrites the initializer of an auto
variable during auto type deduction, use the rewritten initializer when
performing initialization of the variable.

This silences spurious -Warc-repeated-use-of-weak warnings that are
issued when the initializer uses a weak ObjC pointer.

Differential Revision: https://reviews.llvm.org/D55662

llvm-svn: 350917
2019-01-11 04:57:34 +00:00
Richard Smith 64095fc07c Remember to instantiate explicit template argument lists in a friend
function declaration.

We'd previously often just drop these on the floor, and friend
redeclaration matching would usually (but not always) figure out the
right redeclaration anyway.

Also, don't try to match a dependent friend function template
specialization to a template until instantiation, and don't forget to
reject qualified friend declarations in dependent contexts that don't
name an already-declared entity.

llvm-svn: 350915
2019-01-11 01:59:33 +00:00
Brian Gesiak 5488ab4ddd [AST] Remove ASTContext from getThisType (NFC)
Summary:
https://reviews.llvm.org/D54862 removed the usages of `ASTContext&` from
within the `CXXMethodDecl::getThisType` method. Remove the parameter
altogether, as well as all usages of it. This does not result in any
functional change because the parameter was unused since
https://reviews.llvm.org/D54862.

Test Plan: check-clang

Reviewers: akyrtzi, mikael

Reviewed By: mikael

Subscribers: mehdi_amini, dexonsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D56509

llvm-svn: 350914
2019-01-11 01:54:53 +00:00
Richard Trieu f8b8b39c60 Fix header issues.
Several headers would fail to compile if other headers were not previously
included.  The usual issue is that a class is forward declared, but the
full definition is needed.  The requirement for the definition is use of
isa/dyn_cast or calling functions of pointer-packed data types such as
DenseMap or PointerIntPair.  Add missing includes to these headers.

SVals.h required an out-of-line method definition in the .cpp file to avoid
circular inclusion of headers with BasicValueFactory.h

llvm-svn: 350913
2019-01-11 01:32:35 +00:00
Aaron Ballman 8047362129 Add an explicit initializer to silence a -Wmissing-field-initializers diagnostic; NFC.
llvm-svn: 350912
2019-01-11 00:13:57 +00:00
Thomas Lively b7b9fdc114 [WebAssembly] Add unimplemented-simd128 feature, gate builtins
Summary: Depends on D56501. Also adds a macro define
`__wasm_unimplemented_simd128__` for feature detection of
unimplemented SIMD builtins.

Reviewers: aheejin, dschuff

Subscribers: sbc100, jgravelle-google, sunfish, kristina, cfe-commits, rrwinterton
llvm-svn: 350909
2019-01-10 23:49:00 +00:00
Artem Dergachev fc72007f43 [analyzer] pr38838, pr39976: Fix crash on diagnosing before implicit destructor.
We need to be able to emit the diagnostic at PreImplicitCall,
and the patch implements this functionality.

However, for now the need for emitting such diagnostics is not all that great:
it is only necessary to not crash when emitting a false positive due to an
unrelated issue of having dead symbol collection not working properly.

Coming up with a non-false-positive test seems impossible with the current
set of checkers, though it is likely to be needed for good things as well
in the future.

Differential Revision: https://reviews.llvm.org/D56042

rdar://problem/46911462

llvm-svn: 350907
2019-01-10 23:44:44 +00:00
Sterling Augustine b6d0f85daf Properly support -shared-libgcc.
This revision was revied in D55016.

llvm-svn: 350900
2019-01-10 22:25:58 +00:00
Aaron Ballman 70bdcdf55d Correct the source range returned from preprocessor callbacks.
This adjusts the source range passed in to the preprocessor callbacks to only include the condition range itself, rather than all of the conditionally skipped tokens.

llvm-svn: 350891
2019-01-10 21:22:13 +00:00
Stephen Kelly 1224321623 NFC: Change case of identifiers
llvm-svn: 350890
2019-01-10 20:58:21 +00:00
Akira Hatanaka 0a84856431 [Sema] Call CheckPlaceholderExpr to resolve typeof or decltype
placeholder expressions while an unevaluated context is still on the
expression evaluation context stack.

This prevents recordUseOfWeek from being called when a weak variable is
used as an operand of a decltype or a typeof expression and fixes
spurious -Warc-repeated-use-of-weak warnings.

rdar://problem/45742525

Differential Revision: https://reviews.llvm.org/D55662

llvm-svn: 350887
2019-01-10 20:12:16 +00:00
Yaxun Liu 4fa83fca7e [HIP] Use nul instead of /dev/null when running on windows
When clang is running on windows, /dev/null is not available. Use nul as empty input file instead.

Differential Revision: https://reviews.llvm.org/D56225

llvm-svn: 350885
2019-01-10 20:09:52 +00:00
Nick Desaulniers 54c04301b7 fixup: sphinx warning
Fixes the sphinx warning:
tools/clang/docs/DiagnosticsReference.rst:7889: WARNING: Title underline
too short.

That I just introduced in r350877.

llvm-svn: 350878
2019-01-10 19:26:35 +00:00
Nick Desaulniers 2383aad540 [SemaCXX] add -Woverride-init alias to -Winitializer-overrides
Summary:
https://bugs.llvm.org/show_bug.cgi?id=40251
https://github.com/ClangBuiltLinux/linux/issues/307

Reviewers: rsmith

Reviewed By: rsmith

Subscribers: cfe-commits, nathanchance, srhines

Differential Revision: https://reviews.llvm.org/D56522

llvm-svn: 350877
2019-01-10 19:12:39 +00:00
Nicolas Lesser 5610cd8b46 Fix false positive unsequenced access and modification warning in array subscript expression.
Summary: In the [expr.sub] p1, we can read that for a given E1[E2], E1 is sequenced before E2. 

Patch by Mateusz Janek.

Reviewers: rsmith, Rakete1111

Reviewed By: rsmith, Rakete1111

Subscribers: riccibruno, lebedev.ri, Rakete1111, hiraditya, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D50766

llvm-svn: 350874
2019-01-10 19:03:33 +00:00
George Karpenkov 3c1e066dca [analyzer] [hotfix] Fix the tests
The error must have crept during the cherry-pick.

llvm-svn: 350870
2019-01-10 18:28:10 +00:00
George Karpenkov 0bb17c4634 [analyzer] Update the category name for RetainCountChecker reports
..now that it includes OSObjects

rdar://46509986

Differential Revision: https://reviews.llvm.org/D56404

llvm-svn: 350869
2019-01-10 18:16:25 +00:00
George Karpenkov 42c6ac748e [analyzer] [NFC] [RetainCountChecker] Remove dead unused map
Differential Revision: https://reviews.llvm.org/D56402

llvm-svn: 350868
2019-01-10 18:16:10 +00:00
George Karpenkov 4f64b38f56 [analyzer] Quote the type of the leaked/problematic object in diagnostics for readability
Differential Revision: https://reviews.llvm.org/D56344

llvm-svn: 350867
2019-01-10 18:15:57 +00:00
George Karpenkov 363dd8e4b8 [analyzer] [NFC] Reverse the argument order for "diff" in tests
The current argument order has "expected" and "actual" the wrong way around,
so that the diff shows the change from expected to actual, not from actual to expected.

Namely, if the expected diagnostics contains the string "foo", but the analyzer emits "bar",
we really want to see:

```
- foo
+ bar
```

not

```
- bar
+ foo
```

since adapting to most changes would require applying that diff to the expected output.

Differential Revision: https://reviews.llvm.org/D56340

llvm-svn: 350866
2019-01-10 18:15:44 +00:00
George Karpenkov 7bac331b7e [analyzer] [NFC] Reduce redundancy in RetainSummaryManager by using a function
Differential Revision: https://reviews.llvm.org/D56282

llvm-svn: 350865
2019-01-10 18:15:30 +00:00
George Karpenkov 717c4c0e2b [analyzer] [RetainCountChecker] [NFC] Remove SummaryLog
The complicated machinery for passing the summary log around is actually
only used for one thing! To figure out whether the "dealloc" message was
sent.

Since I have tried to extend it for other uses and failed (it's actually
very hard to use), I think it's much better to simply use a tag and
remove the summary log altogether.

Differential Revision: https://reviews.llvm.org/D56228

llvm-svn: 350864
2019-01-10 18:15:17 +00:00
George Karpenkov c2d8f1235b [analyzer] [RetainCountChecker] [NFC] Another minor cleanup
Differential Revision: https://reviews.llvm.org/D56224

llvm-svn: 350863
2019-01-10 18:15:04 +00:00
George Karpenkov 371bfd7295 [analyzer] [RetainCountChecker] [NFC] Refactor the way attributes are handled
Make sure all checks for attributes go through a centralized function,
which checks whether attribute handling is enabled, and performs
validation.  The type of the attribute is returned.

Sadly, metaprogramming is required as attributes have no sensible static
getters.

Differential Revision: https://reviews.llvm.org/D56222

llvm-svn: 350862
2019-01-10 18:14:51 +00:00
George Karpenkov 4cb992e254 [analyzer] [RetainCountChecker] Remove redundant enum UnarySummaryKind
Differential Revision: https://reviews.llvm.org/D56072

llvm-svn: 350861
2019-01-10 18:14:38 +00:00
George Karpenkov 29e1ca83dd [analyzer] [RetainCountChecker] Remove obsolete "MakeCollectable" enum value
Differential Revision: https://reviews.llvm.org/D56071

llvm-svn: 350860
2019-01-10 18:14:25 +00:00
George Karpenkov 9cbcc21aed [analyzer] [RetainCountChecker] [NFC] Remove redundant enum items *Msg, as the object type is already communicated by a separate field
Differential Revision: https://reviews.llvm.org/D56070

llvm-svn: 350859
2019-01-10 18:14:12 +00:00
George Karpenkov 585a210e5f [analyzer] [NFC] Track object type with ArgEffect in RetainCountChecker.
This would be needed in the future.

https://reviews.llvm.org/D56040

llvm-svn: 350858
2019-01-10 18:13:59 +00:00
George Karpenkov 7e3016dec4 [analyzer] [NFC] Move ObjKind into a separate top-level enum in RetainSummaryManager.
Allows using it in future outside of RetEffect.

Differential Revision: https://reviews.llvm.org/D56039

llvm-svn: 350857
2019-01-10 18:13:46 +00:00
Erik Pilkington 52791c6e28 Split -Wdelete-non-virtual-dtor into two groups
This group controls two diagnostics: deleting an abstract class with
a non-virtual dtor, which is a guaranteed crash, and deleting a
non-abstract polymorphic class with a non-virtual dtor, which is just
suspicious.

rdar://40380564

Differential revision: https://reviews.llvm.org/D56405

llvm-svn: 350856
2019-01-10 18:03:07 +00:00
Rafael Stahl 8c48705a19 [analyzer][CrossTU][NFC] Generalize to external definitions instead of external functions
Summary: This is just changing naming and documentation to be general about external definitions that can be imported for cross translation unit analysis. There is at least a plan to add VarDecls: D46421

Reviewers: NoQ, xazax.hun, martong, a.sidorin, george.karpenkov, serge-sans-paille

Reviewed By: xazax.hun, martong

Subscribers: mgorny, whisperity, baloghadamsoftware, szepet, rnkovacs, mikhail.ramalho, Szelethus, donat.nagy, dkrupp, cfe-commits

Differential Revision: https://reviews.llvm.org/D56441

llvm-svn: 350852
2019-01-10 17:44:04 +00:00
Aaron Ballman 2c49462725 Correct the spelling of helpURI to helpUri.
JSON is case sensitive and the SARIF spec uses the corrected spelling.

llvm-svn: 350817
2019-01-10 13:19:48 +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
Stanislav Mekhanoshin 6332f4d0d4 [AMDGPU] Separate feature dot-insts
Differential Revision: https://reviews.llvm.org/D56525

llvm-svn: 350794
2019-01-10 03:25:47 +00:00
Richard Trieu afd6711287 Refactor declarations of ASTContext allocate functions into its own header.
Forward declarations of the allocate functions combine with the forward
declaration of the ASTContext class is enough information for some headers
without pulling in ASTContext.h in its entirety.  Pull the existing
declarations from AttrIterator.h into a new header.  Also place the default
alignment size into this header.  Previously, new had its default in
AttrIterator.h while new[] had its default in ASTContext.h.  Add new header
includes where it is needed.  Specifically to ASTVector.h to make it a
standalone header, unlike previously which it was standalone as long as
none of its functions were called.

llvm-svn: 350792
2019-01-10 03:23:25 +00:00
Craig Topper bed882b9e8 [X86] Really make the pointer arguments to avx512 gather/scatter intrinsics 'void*' to match gcc and Intel's documentation.
The avx2 gather intrinsics are documented to use 'int', 'long long', 'float', or 'double' *. So I'm leaving those. This matches gcc.

I tried to do this in r350696, but I only updated the header not the builtin definition.

llvm-svn: 350785
2019-01-10 00:47:25 +00:00
Richard Smith 2f72a7521a In nothrow new-expressions, null-check the result if we're going to
apply sanitizers to it.

This avoids a sanitizer false positive that we are initializing a null
pointer.

llvm-svn: 350779
2019-01-10 00:03:29 +00:00
Nick Desaulniers 9b9fe4166f [Sema] Mark target of __attribute__((alias("target"))) used for C
Summary:
Prevents -Wunneeded-internal-delcaration warnings when the target has no
other references. This occurs frequently in device drivers in the Linux
kernel.

Sema would need to invoke the demangler on the target, since in C++ the
target name is mangled:

int f() { return 42; }
int g() __attribute__((alias("_Z1fv")));

Sema does not have the ability to demangle names at this time.

https://bugs.llvm.org/show_bug.cgi?id=39088
https://github.com/ClangBuiltLinux/linux/issues/232

Reviewers: rsmith, rjmccall

Reviewed By: rsmith

Subscribers: erik.pilkington, cfe-commits, pirama, srhines

Differential Revision: https://reviews.llvm.org/D54188

llvm-svn: 350776
2019-01-09 23:54:55 +00:00