Commit Graph

87042 Commits

Author SHA1 Message Date
Yuanfang Chen fc3942526f [NFCI] Add a missing triple in clang/test/CodeGen/ppc64le-varargs-f128.c 2020-12-09 18:17:34 -08:00
Richard Smith 7127fd1786 MSABI: Basic mangling for access to member subobjects in a class
non-type template parameter.

The mangling information used here comes from private communication with
Jon Caves at Microsoft.
2020-12-09 18:08:49 -08:00
Fangrui Song 880aa6ac66 [test] Fix test/Driver/ve-toolchain.cpp
It should specify --sysroot to test the paths of crt1.o/crti.o/crtbegin.o.
For a user who enable VE but do not actually have VE sysroot,
the "nld" command line will have bare "crt1.o" "crti.o" ... "crtbegin.o"
2020-12-09 17:26:22 -08:00
Fangrui Song 754d1d3d52 [test] Fix Misc/time-passes.c 2020-12-09 17:17:28 -08:00
Fangrui Song 872bf68001 Default CodeGenOptions::LegacyPassManager to !LLVM_ENABLE_NEW_PASS_MANAGER
Fixes test/CodeGen/flatten.c
2020-12-09 17:10:17 -08:00
Fangrui Song f9c0d1b056 [Driver] Add -f[no-]legacy-pass-manager to supersede -f[no-]experimental-new-pass-manager
The new PM is considered stable and many downstream groups have adopted it (some
have adopted it for more than two years). Add -f[no-]legacy-pass-manager to reflect the
fact that it is no longer experimental and the legacy pass manager is something we strive to retire.

In the future, when the legacy PM eventually goes away,
-fno-experimental-new-pass-manager and -flegacy-pass-manager will be removed.

This patch also changes -f[no-]legacy-pass-manager to pass `-plugin-opt={new,legacy}-pass-manager` to the linker (supported by both ld.lld and LLVMgold.so) when -flto/-flto=thin is specified

Reviewed By: aeubanks, rsmith

Differential Revision: https://reviews.llvm.org/D92915
2020-12-09 16:57:36 -08:00
Artem Belevich 016e4ebfde [DWARF] Allow toolchain to adjust specified DWARF version.
This is needed for CUDA compilation where NVPTX back-end only supports DWARF2,
but host compilation should be allowed to use newer DWARF versions.

Differential Revision: https://reviews.llvm.org/D92617
2020-12-09 16:34:34 -08:00
Duncan P. N. Exon Smith 2ea8c69eff Tooling: Migrate to FileEntryRef in clang::tooling::applyAllReplacements, NFC
Migrate to the `FileEntryRef` overload of `SourceManager::createFileID`.
2020-12-09 16:31:38 -08:00
Duncan P. N. Exon Smith 347e1f6213 Frontend: Use a getVirtualFileRef for a named pipe main file, NFC 2020-12-09 16:17:14 -08:00
Duncan P. N. Exon Smith 75a95bc80e clang-format: Migrate createInMemoryFile to FileEntryRef, NFC 2020-12-09 15:00:53 -08:00
Duncan P. N. Exon Smith c3ff9939bf Remove RemappedFiles param from ASTUnit::LoadFromASTFile, NFC
This parameter is always set to `None`. Remove it.

Differential Revision: https://reviews.llvm.org/D90889
2020-12-09 14:44:31 -08:00
Duncan P. N. Exon Smith 898d61b3cf ARCMigrate: Migrate ObjCMT.cpp over to FileEntryRef
Migrate ObjCMT.cpp from using `const FileEntry*` to `FileEntryRef`. This
is one of the blockers for changing `SourceManager` to use
`FileEntryRef`.

This adds an initial version of `SourceManager::getFileEntryRefForID`,
which uses to `FileEntry::getLastRef`; after `SourceManager` switches,
`SourceManager::getFileEntryForID` will need to call this function.

This also adds uses of `FileEntryRef` as a key in a `DenseMap`, and a
call to `hash_value(Optional)` in `DenseMapInfo<EditEntry>`; support for
these were added in prep commits.

Differential Revision: https://reviews.llvm.org/D92678
2020-12-09 14:16:05 -08:00
Duncan P. N. Exon Smith a5c89bb021 Frontend: Migrate to FileEntryRef in CompilerInstance::InitializeSourceManager, NFC
Use `FileManager::getVirtualFileRef` to get the virtual file for stdin,
and add an overload of `SourceManager::overrideFileContents` that takes
a `FileEntryRef`, migrating `CompilerInstance::InitializeSourceManager`.

Differential Revision: https://reviews.llvm.org/D92680
2020-12-09 13:28:29 -08:00
Yuanfang Chen 8b23b3ab3a [NFCI] Add missing triple to several LTO tests
Also remove the module triple of clang/test/CodeGenObjC/arc.ll, the
commandline tripe is all it needs.
2020-12-09 13:13:58 -08:00
Gabor Marton a5e6590b15 [ASTImporter] Support CXXDeductionGuideDecl with local typedef
CXXDeductionGuideDecl with a local typedef has its own copy of the
TypedefDecl with the CXXDeductionGuideDecl as the DeclContext of that
TypedefDecl.
```
      template <typename T> struct A {
        typedef T U;
        A(U, T);
      };
      A a{(int)0, (int)0};
```
Related discussion on cfe-dev:
http://lists.llvm.org/pipermail/cfe-dev/2020-November/067252.html

Without this fix, when we import the CXXDeductionGuideDecl (via
VisitFunctionDecl) then before creating the Decl we must import the
FunctionType. However, the first parameter's type is the afore mentioned
local typedef. So, we then start importing the TypedefDecl whose
DeclContext is the CXXDeductionGuideDecl itself. The infinite loop is
formed.
```
 #0 clang::ASTNodeImporter::VisitCXXDeductionGuideDecl(clang::CXXDeductionGuideDecl*) clang/lib/AST/ASTImporter.cpp:3543:0
 #1 clang::declvisitor::Base<std::add_pointer, clang::ASTNodeImporter, llvm::Expected<clang::Decl*> >::Visit(clang::Decl*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/DeclNodes.inc:405:0
 #2 clang::ASTImporter::ImportImpl(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8038:0
 #3 clang::ASTImporter::Import(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8200:0
 #4 clang::ASTImporter::ImportContext(clang::DeclContext*) clang/lib/AST/ASTImporter.cpp:8297:0
 #5 clang::ASTNodeImporter::ImportDeclContext(clang::Decl*, clang::DeclContext*&, clang::DeclContext*&) clang/lib/AST/ASTImporter.cpp:1852:0
 #6 clang::ASTNodeImporter::ImportDeclParts(clang::NamedDecl*, clang::DeclContext*&, clang::DeclContext*&, clang::DeclarationName&, clang::NamedDecl*&, clang::SourceLocation&) clang/lib/AST/ASTImporter.cpp:1628:0
 #7 clang::ASTNodeImporter::VisitTypedefNameDecl(clang::TypedefNameDecl*, bool) clang/lib/AST/ASTImporter.cpp:2419:0
 #8 clang::ASTNodeImporter::VisitTypedefDecl(clang::TypedefDecl*) clang/lib/AST/ASTImporter.cpp:2500:0
 #9 clang::declvisitor::Base<std::add_pointer, clang::ASTNodeImporter, llvm::Expected<clang::Decl*> >::Visit(clang::Decl*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/DeclNodes.inc:315:0
 #10 clang::ASTImporter::ImportImpl(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8038:0
 #11 clang::ASTImporter::Import(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8200:0
 #12 llvm::Expected<clang::TypedefNameDecl*> clang::ASTNodeImporter::import<clang::TypedefNameDecl>(clang::TypedefNameDecl*) clang/lib/AST/ASTImporter.cpp:165:0
 #13 clang::ASTNodeImporter::VisitTypedefType(clang::TypedefType const*) clang/lib/AST/ASTImporter.cpp:1304:0
 #14 clang::TypeVisitor<clang::ASTNodeImporter, llvm::Expected<clang::QualType> >::Visit(clang::Type const*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/TypeNodes.inc:74:0
 #15 clang::ASTImporter::Import(clang::QualType) clang/lib/AST/ASTImporter.cpp:8071:0
 #16 llvm::Expected<clang::QualType> clang::ASTNodeImporter::import<clang::QualType>(clang::QualType const&) clang/lib/AST/ASTImporter.cpp:179:0
 #17 clang::ASTNodeImporter::VisitFunctionProtoType(clang::FunctionProtoType const*) clang/lib/AST/ASTImporter.cpp:1244:0
 #18 clang::TypeVisitor<clang::ASTNodeImporter, llvm::Expected<clang::QualType> >::Visit(clang::Type const*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/TypeNodes.inc:47:0
 #19 clang::ASTImporter::Import(clang::QualType) clang/lib/AST/ASTImporter.cpp:8071:0
 #20 llvm::Expected<clang::QualType> clang::ASTNodeImporter::import<clang::QualType>(clang::QualType const&) clang/lib/AST/ASTImporter.cpp:179:0
 #21 clang::QualType clang::ASTNodeImporter::importChecked<clang::QualType>(llvm::Error&, clang::QualType const&) clang/lib/AST/ASTImporter.cpp:198:0
 #22 clang::ASTNodeImporter::VisitFunctionDecl(clang::FunctionDecl*) clang/lib/AST/ASTImporter.cpp:3313:0
 #23 clang::ASTNodeImporter::VisitCXXDeductionGuideDecl(clang::CXXDeductionGuideDecl*) clang/lib/AST/ASTImporter.cpp:3543:0
```

The fix is to first create the TypedefDecl and only then start to import
the DeclContext.
Basically, we could do this during the import of all other Decls (not
just for typedefs). But it seems, there is only one another AST
construct that has a similar cycle: a struct defined as a function
parameter:
```
int struct_in_proto(struct data_t{int a;int b;} *d);

```
In that case, however, we had decided to return simply with an error
back then because that seemed to be a very rare construct.

Differential Revision: https://reviews.llvm.org/D92209
2020-12-09 21:25:04 +01:00
Richard Smith 4ae8651c59 Add another test for PR48434. 2020-12-09 12:22:35 -08:00
Richard Smith 2a2c228c7a Add new 'preferred_name' attribute.
This attribute permits a typedef to be associated with a class template
specialization as a preferred way of naming that class template
specialization. This permits us to specify that (for example) the
preferred way to express 'std::basic_string<char>' is as 'std::string'.

The attribute is applied to the various class templates in libc++ that have
corresponding well-known typedef names.

This is a re-commit. The previous commit was reverted because it exposed
a pre-existing bug that has since been fixed / worked around; see
PR48434.

Differential Revision: https://reviews.llvm.org/D91311
2020-12-09 12:22:35 -08:00
Richard Smith 997a719d5a PR48434: Work around crashes due to deserialization cycles via typedefs.
Ensure that we can deserialize a TypedefType even while in the middle of
deserializing its TypedefDecl, by removing the need to look at the
TypedefDecl while constructing the TypedefType.

This fixes all the currently-known failures for PR48434, but it's not a
complete fix, because we can still trigger deserialization cycles, which
are not supposed to happen.
2020-12-09 12:22:35 -08:00
Duncan P. N. Exon Smith 82789228c6 Frontend: Migrate to FileEntryRef in VerifyDiagnosticConsumer.cpp, NFC
Add a `FileEntryRef` overload of `SourceManager::translateFile`, and
migrate `ParseDirective` in VerifyDiagnosticConsumer.cpp to use it and
the corresponding overload of `createFileID`.

No functionality change here.

Differential Revision: https://reviews.llvm.org/D92699
2020-12-09 11:51:43 -08:00
Reid Kleckner df282215d4 Don't setup inalloca for swiftcc on i686-windows-msvc
Swiftcall does it's own target-independent argument type classification,
since it is not designed to be ABI compatible with anything local on the
target that isn't LLVM-based. This means it never uses inalloca.
However, we have duplicate logic for checking for inalloca parameters
that runs before call argument setup. This logic needs to know ahead of
time if inalloca will be used later, and we can't move the
CGFunctionInfo calculation earlier.

This change gets the calling convention from either the
FunctionProtoType or ObjCMethodDecl, checks if it is swift, and if so
skips the stackbase setup.

Depends on D92883.

Differential Revision: https://reviews.llvm.org/D92944
2020-12-09 11:08:48 -08:00
Reid Kleckner d7098ff29c De-templatify EmitCallArgs argument type checking, NFCI
This template exists to abstract over FunctionPrototype and
ObjCMethodDecl, which have similar APIs for storing parameter types. In
place of a template, use a PointerUnion with two cases to handle this.
Hopefully this improves readability, since the type of the prototype is
easier to discover. This allows me to sink this code, which is mostly
assertions, out of the header file and into the cpp file. I can also
simplify the overloaded methods for computing isGenericMethod, and get
rid of the second EmitCallArgs overload.

Differential Revision: https://reviews.llvm.org/D92883
2020-12-09 11:08:00 -08:00
Jan Svoboda 13e4e5ed59 Revert "[clang][cli] CompilerInvocationTest: add tests for boolean options"
Differential Revision of original patch: https://reviews.llvm.org/D92774
2020-12-09 10:35:07 +01:00
Jan Svoboda 35621cc2e3 [clang][cli] CompilerInvocationTest: add tests for boolean options
Add more tests of the command line marshalling infrastructure.

The new tests now make a "round-trip": from arguments, to CompilerInvocation instance to arguments again in a single test case.

The TODOs are resolved in a follow-up patch.

Depends on D92830.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92774
2020-12-09 08:58:46 +01:00
Jan Svoboda 216d43053b [clang][cli] CompilerInvocationTest: join and add test cases
Depends on D92829.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92830
2020-12-09 08:58:45 +01:00
Jan Svoboda 03692bae1f [clang][cli] CompilerInvocationTest: check arg parsing does not produce diagnostics
Depends on D92828.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92829
2020-12-09 08:58:45 +01:00
Jan Svoboda 4894e423e7 [clang][cli] CompilerInvocationTest: remove unnecessary command line arguments
Depends on D92827.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92828
2020-12-09 08:58:45 +01:00
Jan Svoboda 5afff86d26 [clang][cli] CompilerInvocationTest: split enum test into two
Depends on D92826.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92827
2020-12-09 08:58:45 +01:00
Jan Svoboda f825ec86e1 [clang][cli] CompilerInvocationTest: rename member variable in fixture
Depends on D92825.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92826
2020-12-09 08:58:45 +01:00
Jan Svoboda cf2bb22392 [clang][cli] CompilerInvocationTest: join two test fixtures into one
Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92825
2020-12-09 08:58:45 +01:00
Duncan P. N. Exon Smith 2878e965af Basic: Add hashing support for FileEntryRef and DirectoryEntryRef
Allow hashing FileEntryRef and DirectoryEntryRef via `hash_value`, and
use that to implement `DenseMapInfo`. This hash should be equal whenever
the entry is the same (the name used to reference it is not relevant).

Also add `DirectoryEntryRef::isSameRef` to simplify the implementation
and facilitate testing.

Differential Revision: https://reviews.llvm.org/D92627
2020-12-08 18:10:53 -08:00
Duncan P. N. Exon Smith 5207f19d10 ADT: Allow IntrusiveRefCntPtr construction from std::unique_ptr, NFC
Allow a `std::unique_ptr` to be moved into the an `IntrusiveRefCntPtr`,
and remove a couple of now-unnecessary `release()` calls.

Differential Revision: https://reviews.llvm.org/D92888
2020-12-08 17:33:19 -08:00
Duncan P. N. Exon Smith b85c6e5bcd ARCMigrate: Use hash_combine in the DenseMapInfo for EditEntry
Simplify the DenseMapInfo for `EditEntry` by migrating from
`FoldingSetNodeID` to `llvm::hash_combine`. Besides the cleanup, this
reduces the diff for a future patch which changes the type of one of the
fields.

There should be no real functionality change here, although I imagine
the hash value will churn since its a different hashing infrastructure.

Differential Revision: https://reviews.llvm.org/D92630
2020-12-08 13:46:21 -08:00
Fangrui Song 85c18d3521 [Driver] Add -gno-split-dwarf which can disable debug fission
Currently when -gsplit-dwarf is specified (could be buried in a build system),
there is no convenient way to cancel debug fission without affecting the debug
information amount (all of -g0, -g1 -fsplit-dwarf-inlining and -gline-directives-only
can, but they affect the debug information amount).

Reviewed By: #debug-info, dblaikie

Differential Revision: https://reviews.llvm.org/D92809
2020-12-08 13:24:59 -08:00
Saleem Abdulrasool b13f741511 APINotes: add bitcode format schema definitions
This adds the bitcode format schema required for serialization of the
YAML data to a binary format.  APINotes are pre-compiled and re-used in
the binary format from the frontend.  These definitions provide the data
layout representation enabling writing (and eventually) reading of the
data in bitcode format.

This is extracted from the code contributed by Apple at
https://github.com/llvm/llvm-project-staging/tree/staging/swift/apinotes.

Differential Revision: https://reviews.llvm.org/D91997
Reviewed By: Gabor Marton
2020-12-08 21:15:41 +00:00
Fangrui Song 843f2dbf00 [Driver] Don't make -gsplit-dwarf imply -g2
RFC: http://lists.llvm.org/pipermail/cfe-dev/2020-May/065430.html
Agreement from GCC: https://sourceware.org/pipermail/gcc-patches/2020-May/545688.html

g_flags_Group options generally don't affect the amount of debugging
information. -gsplit-dwarf is an exception. Its order dependency with
other gN_Group options make it inconvenient in a build system:

* -g0 -gsplit-dwarf -> level 2
   -gsplit-dwarf "upgrades" the amount of debugging information despite
   the previous intention (-g0) to drop debugging information
* -g1 -gsplit-dwarf -> level 2
  -gsplit-dwarf "upgrades" the amount of debugging information.
* If we have a higher-level -gN, -gN -gsplit-dwarf will supposedly decrease the
  amount of debugging information. This happens with GCC -g3.

The non-orthogonality has confused many users. GCC 11 will change the semantics
(-gsplit-dwarf no longer implies -g2) despite the backwards compatibility break.
This patch matches its behavior.

New semantics:

* If there is a g_Group, allow split DWARF if useful
  (none of: -g0, -gline-directives-only, -g1 -fno-split-dwarf-inlining)
* Otherwise, no-op.

To restore the original behavior, replace -gsplit-dwarf with -gsplit-dwarf -g.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D80391
2020-12-08 13:14:34 -08:00
Duncan P. N. Exon Smith 51f3432f4b Frontend: Clarify logic for using the preamble in ASTUnit::CodeComplete, almost NFC
Clarify the logic for using the preamble (and overriding the main file
buffer) in `ASTUnit::CodeComplete` by factoring out a couple of lambdas
(`getUniqueID` and `hasSameUniqueID`).  While refactoring the logic,
hoist the check for `Line > 1` and locally check if the filenames are
equal (both to avoid unnecessary `stat` calls) and skip copying out the
filenames to `std::string`.

Besides fewer calls to `stat`, there's no functionality change here.

Differential Revision: https://reviews.llvm.org/D91296
2020-12-08 12:52:17 -08:00
Masoud Ataei fc750f609d [PPC] Fixing a typo in altivec.h. Commenting out an unnecessary macro 2020-12-08 19:21:02 +00:00
Yuanfang Chen 1821265db6 [Time-report] Add a flag -ftime-report={per-pass,per-pass-run} to control the pass timing aggregation
Currently, -ftime-report + new pass manager emits one line of report for each
pass run. This potentially causes huge output text especially with regular LTO
or large single file (Obeserved in private tests and was reported in D51276).
The behaviour of -ftime-report + legacy pass manager is
emitting one line of report for each pass object which has relatively reasonable
text output size. This patch adds a flag `-ftime-report=` to control time report
aggregation for new pass manager.

The flag is for new pass manager only. Using it with legacy pass manager gives
an error. It is a driver and cc1 flag. `per-pass` is the new default so
`-ftime-report` is aliased to `-ftime-report=per-pass`. Before this patch,
functionality-wise `-ftime-report` is aliased to `-ftime-report=per-pass-run`.

* Adds an boolean variable TimePassesHandler::PerRun to control per-pass vs per-pass-run.
* Adds a new clang CodeGen flag CodeGenOptions::TimePassesPerRun to work with the existing CodeGenOptions::TimePasses.
* Remove FrontendOptions::ShowTimers, its uses are replaced by the existing CodeGenOptions::TimePasses.
* Remove FrontendTimesIsEnabled (It was introduced in D45619 which was largely reverted.)

Differential Revision: https://reviews.llvm.org/D92436
2020-12-08 10:13:19 -08:00
Nigel Perks 27ea7d0a6e Fix inconsistent availability attribute message string literal check.
Function Parser::ParseAvailabilityAttribute checks that the message string of
an availability attribute is not a wide string literal. Test case
clang/test/Parser/attr-availability.c specifies that a string literal is
expected.

The code checked that the first token in a string concatenation is a string
literal, and then that the concatenated string consists of 1-byte characters.
On a target where wide character is 1 byte, a string concatenation "a" L"b"
passes both those checks, but L"b" alone is rejected. More generally, "a" u8"b"
passes the checks, but u8"b" alone is rejected.

So check isAscii() instead of character size.
2020-12-08 12:33:59 -05:00
Simon Pilgrim 25f5df7e0b SemaType.cpp - use castAs<> instead of getAs<> for dereferenced pointers
Fix static analyzer warnings - castAs<> will assert the type is correct, but getAs<> just returns null, which would just result in a dereferenced null pointer.
2020-12-08 16:37:20 +00:00
Gabor Marton febe75032f [analyzer][StdLibraryFunctionsChecker] Add more return value contraints
This time, we add contraints to functions that either return with [0, -1] or
with a file descriptor.

Differential Revision: https://reviews.llvm.org/D92771
2020-12-08 17:04:29 +01:00
Gabor Marton d14c631673 [analyzer][StdLibraryFunctionsChecker] Make close and mmap to accept -1 as fd
close:
It is quite often that users chose to call close even if the fd is
negative. Theoretically, it would be nicer to close only valid fds, but
in practice the implementations of close just returns with EBADF in case
of a non-valid fd param. So, we can eliminate many false positives if we
let close to take -1 as an fd. Other negative values are very unlikely,
because open and other fd factories return with -1 in case of failure.

mmap:
In the case of MAP_ANONYMOUS flag (which is supported e.g. in Linux) the
mapping is not backed by any file; its contents are initialized to zero.
The fd argument is ignored; however, some implementations require fd to
be -1 if MAP_ANONYMOUS (or MAP_ANON) is specified, and portable
applications should ensure this.
Consequently, we must allow -1 as the 4th arg.

Differential Revision: https://reviews.llvm.org/D92764
2020-12-08 16:58:30 +01:00
Kevin P. Neal acd4950d4f [FPEnv] Correct constrained metadata in fp16-ops-strict.c
This test shows we're in some cases not getting strictfp information from
the AST. Correct that.

Differential Revision: https://reviews.llvm.org/D92596
2020-12-08 10:18:32 -05:00
Jan Svoboda 083e035c47 [clang][cli] Unify boolean marshalling
Use lambdas with captures to replace the redundant infrastructure for marshalling of two boolean flags that control the same keypath.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92773
2020-12-08 13:47:30 +01:00
Tim Northover c5978f42ec UBSAN: emit distinctive traps
Sometimes people get minimal crash reports after a UBSAN incident. This change
tags each trap with an integer representing the kind of failure encountered,
which can aid in tracking down the root cause of the problem.
2020-12-08 10:28:26 +00:00
Luís Marques 3af354e863 [Clang][CodeGen][RISCV] Fix hard float ABI for struct with empty struct and complex
Fixes bug 44904.

Differential Revision: https://reviews.llvm.org/D91278
2020-12-08 09:19:05 +00:00
Luís Marques fa8f5bfa4e [Clang][CodeGen][RISCV] Fix hard float ABI test cases with empty struct
The code seemed not to account for the field 1 offset.

Differential Revision: https://reviews.llvm.org/D91270
2020-12-08 09:19:05 +00:00
Luís Marques ca93f9abdc [Clang][CodeGen][RISCV] Add hard float ABI tests with empty struct
This patch adds tests that showcase a behavior that is currently buggy.
Fix in a follow-up patch.

Differential Revision: https://reviews.llvm.org/D91269
2020-12-08 09:19:05 +00:00
Richard Smith a1344779ab Revert "Add new 'preferred_name' attribute."
This change exposed a pre-existing issue with deserialization cycles
caused by a combination of attributes and template instantiations
violating the deserialization ordering restrictions; see PR48434 for
details.

A previous commit attempted to work around PR48434, but appears to have
only been a partial fix, and fixing this properly seems non-trivial.
Backing out for now to unblock things.

This reverts commit 98f76adf4e and
commit a64c26a47a.
2020-12-08 00:42:48 -08:00
Qiu Chaofan 5e85a2ba16 [PowerPC] Implement intrinsic for DARN instruction
Instruction darn was introduced in ISA 3.0. It means 'Deliver A Random
Number'. The immediate number L means:

- L=0, the number is 32-bit (higher 32-bits are all-zero)
- L=1, the number is 'conditioned' (processed by hardware to reduce bias)
- L=2, the number is not conditioned, directly from noise source

GCC implements them in three separate intrinsics: __builtin_darn,
__builtin_darn_32 and __builtin_darn_raw. This patch implements the
same intrinsics. And this change also addresses Bugzilla PR39800.

Reviewed By: steven.zhang

Differential Revision: https://reviews.llvm.org/D92465
2020-12-08 14:08:52 +08:00
Vitaly Buka 6e614b0c7e [NFC][MSan] Round up OffsetPtr in PoisonMembers
getFieldOffset(layoutStartOffset)  is expected to point to the first trivial
field or the one which follows non-trivial. So it must be byte aligned already.
However this is not obvious without assumptions about callers.
This patch will avoid the need in such assumptions.

Depends on D92727.

Differential Revision: https://reviews.llvm.org/D92728
2020-12-07 19:57:49 -08:00
Richard Smith 590e146532 Fix assertion failure due to incorrect dependence bits on a DeclRefExpr
that can only be set correctly after instantiating the initializer for a
variable.
2020-12-07 18:48:38 -08:00
Fangrui Song 29295e2165 [test] Rewrite split-debug.c
Use generic ELF target triples.
Add missing coverage: -gsplit-dwarf=split -g -fsplit-dwarf-inlining
Reorganize and add comments.
Test -gno-pubnames
2020-12-07 18:40:31 -08:00
Yaxun (Sam) Liu efc063b621 Fix lit test failure due to 0b81d9
These lit tests now requires amdgpu-registered-target since they
use clang driver and clang driver passes an LLVM option which
is available only if amdgpu target is registered.

Change-Id: I2df31967409f1627fc6d342d1ab5cc8aa17c9c0c
2020-12-07 19:50:21 -05:00
Richard Smith a64c26a47a Fix deserialization cycle in preferred_name attribute.
This is really just a workaround for a more fundamental issue in the way
we deserialize attributes. See PR48434 for details.

Also fix tablegen code generator to produce more correct indentation to
resolve buildbot issues with -Werror=misleading-indentation firing
inside the generated code.
2020-12-07 16:02:05 -08:00
Yaxun (Sam) Liu 0b81d9a992 [AMDGPU] add -mcode-object-version=n
Add option -mcode-object-version=n to control code object version for
AMDGPU.

Differential Revision: https://reviews.llvm.org/D91310
2020-12-07 18:08:37 -05:00
Yaxun (Sam) Liu 5cae708002 [clang][AMDGPU] remove mxnack and msramecc options
Remove mxnack and msramecc options since they
are deprecated by --offload-arch.

This is part of https://reviews.llvm.org/D60620
2020-12-07 18:08:37 -05:00
Yaxun (Sam) Liu 4bed1d9b32 [HIP] fix bundle entry ID for --
Canonicalize triple used in fat binary. Change from
amdgcn-amd-amdhsa to amdgcn-amd-amdhsa-.

This is part of https://reviews.llvm.org/D60620
2020-12-07 18:08:37 -05:00
Yaxun (Sam) Liu 40ad476a32 [clang][AMDGPU] rename sram-ecc as sramecc
As backend renamed sram-ecc to sramecc, this patch makes
corresponding change in clang.

Differential Revision: https://reviews.llvm.org/D86217
2020-12-07 18:05:47 -05:00
Jann Horn 6dad7ec539 [clang] Fix noderef for AddrOf on MemberExpr
Committing on behalf of thejh (Jann Horn).

As part of this change, one existing test case has to be adjusted
because it accidentally stripped the NoDeref attribute without
getting caught.

Depends on D92140

Differential Review: https://reviews.llvm.org/D92141
2020-12-07 14:48:41 -08:00
Leonard Chan 155fca3cae [clang] Fix noderef for array member of deref expr
Committing on behalf of thejh (Jann Horn).

    Given an attribute((noderef)) pointer "p" to the struct

    struct s { int a[2]; };
    ensure that the following expressions are treated the same way by the
    noderef logic:

    p->a
    (*p).a
    Until now, the first expression would be treated correctly (nothing is
    added to PossibleDerefs because CheckMemberAccessOfNoDeref() bails out
    on array members), but the second expression would incorrectly warn
    because "*p" creates a PossibleDerefs entry.

    Handle this case the same way as for the AddrOf operator.

    Differential Revision: https://reviews.llvm.org/D92140
2020-12-07 14:39:42 -08:00
Erik Pilkington 5a28e1d9e5 [clang] Add support for attribute 'swift_async'
This attributes specifies how (or if) a given function or method will be
imported into a swift async method. rdar://70111252

Differential revision: https://reviews.llvm.org/D92742
2020-12-07 17:19:26 -05:00
Erik Pilkington 9cd2413f1c [clang] Add a new nullability annotation for swift async: _Nullable_result
_Nullable_result generally like _Nullable, except when being imported into a
swift async method. rdar://70106409

Differential revision: https://reviews.llvm.org/D92495
2020-12-07 17:19:20 -05:00
Vitaly Buka 3e1cb0db8a [CodeGen][MSan] Don't use offsets of zero-sized fields
Such fields will likely have offset zero making
__sanitizer_dtor_callback poisoning wrong regions.
E.g. it can poison base class member from derived class constructor.

Differential Revision: https://reviews.llvm.org/D92727
2020-12-07 13:37:40 -08:00
Richard Smith 98f76adf4e Add new 'preferred_name' attribute.
This attribute permits a typedef to be associated with a class template
specialization as a preferred way of naming that class template
specialization. This permits us to specify that (for example) the
preferred way to express 'std::basic_string<char>' is as 'std::string'.

The attribute is applied to the various class templates in libc++ that have
corresponding well-known typedef names.

Differential Revision: https://reviews.llvm.org/D91311
2020-12-07 12:53:07 -08:00
Nathan James dc361d5c2a
[llvm] Add asserts in (ThreadSafe)?RefCountedBase destructors
Added a trivial destructor in release mode and in debug mode a destructor that asserts RefCount is indeed zero.
This ensure people aren't manually (maybe accidentally) destroying these objects like in this contrived example.
```lang=c++
{
  std::unique_ptr<SomethingRefCounted> Object;
  holdIntrusiveOwnership(Object.get());
  // Object Destructor called here will assert.
}
```

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D92480
2020-12-07 20:20:08 +00:00
Erich Keane 1c98f98410 Stop ExtractTypeForDeductionGuide from recursing on TypeSourceInfo
As reported in PR48177, the type-deduction extraction ends up going into
an infinite loop when the type referred to has a recursive definition.
This stops recursing and just substitutes the type-source-info the
TypeLocBuilder identified when transforming the base.
2020-12-07 11:29:57 -08:00
Yu Shan 3ce78f54ed [analyzer] Ignore annotations if func is inlined.
When we annotating a function header so that it could be used by other
TU, we also need to make sure the function is parsed correctly within
the same TU. So if we can find the function's implementation,
ignore the annotations, otherwise, false positive would occur.
Move the escape by value case to post call and do not escape the handle
if the function is inlined and we have analyzed the handle.

Differential Revision: https://reviews.llvm.org/D91902
2020-12-07 11:28:11 -08:00
Jennifer Yu f8d5b49c78 Fix missing error for use of 128-bit integer inside SPIR64 device code.
Emit error for use of 128-bit integer inside device code had been
already implemented in https://reviews.llvm.org/D74387.  However,
the error is not emitted for SPIR64, because for SPIR64, hasInt128Type
return true.

hasInt128Type: is also used to control generation of certain 128-bit
predefined macros, initializer predefined 128-bit integer types and
build 128-bit ArithmeticTypes.  Except predefined macros, only the
device target is considered, since error only emit when 128-bit
integer is used inside device code, the host target (auxtarget) also
needs to be considered.

The change address:
1. (SPIR.h) Correct hasInt128Type() for SPIR targets.
2. Sema.cpp and SemaOverload.cpp: Add additional check to consider host
   target(auxtarget) when call to hasInt128Type.  So that __int128_t
   and __int128() are allowed to avoid error when they used outside
   device code.
3. SemaType.cpp: add check for SYCLIsDevice to delay the error message.
   The error will be emitted if the use of 128-bit integer in the device
   code.

   Reviewed By: Johannes Doerfert and Aaron Ballman

   Differential Revision: https://reviews.llvm.org/D92439
2020-12-07 10:42:32 -08:00
Richard Sandiford fd14a27533 [Sema] Make more overload candidate types use iterator_ranges (NFC)
I have a patch that adds another group of candidate types to
BuiltinCandidateTypeSet.  Currently two styles are in use: the older
begin/end pairs and the newer iterator_range approach.  I think the
group of candidates that I want to add should use iterator ranges,
but I'd also like to consolidate the handling of the new candidates
with some existing code that uses begin/end pairs.  This patch therefore
converts the begin/end pairs to iterator ranges as a first step.

No functional change intended.

Differential Revision: https://reviews.llvm.org/D92222
2020-12-07 18:34:53 +00:00
Fangrui Song 1b734c662b [Parse] Delete unused declarations 2020-12-07 08:46:17 -08:00
Yitzhak Mandelbaum e6bc4a71e3 [libTooling] Add `describe` combinator for formatting AST nodes for diagnostics.
This new stencil combinator is intended for use in diagnostics and the like.

Differential Revision: https://reviews.llvm.org/D92658
2020-12-07 16:08:05 +00:00
Jinsong Ji b49b8f096c [PowerPC][Clang] Remove QPX support
Clean up QPX code in clang missed in https://reviews.llvm.org/D83915

Reviewed By: #powerpc, steven.zhang

Differential Revision: https://reviews.llvm.org/D92329
2020-12-07 10:15:39 -05:00
Sam McCall a1cb9cbf5c Add ability to load a FixedCompilationDatabase from a buffer.
Previously, loading one from a file meant allowing the library to do the IO.
Clangd would prefer to do such IO itself (e.g. to allow caching).

Differential Revision: https://reviews.llvm.org/D92640
2020-12-07 13:07:10 +01:00
Qiu Chaofan 6bf29dbb15 [PowerPC] [Clang] Enable float128 feature on P9 by default
As Power9 introduced hardware support for IEEE quad-precision FP type,
the feature should be enabled by default on Power9 or newer targets.

Reviewed By: steven.zhang

Differential Revision: https://reviews.llvm.org/D90213
2020-12-07 18:31:00 +08:00
Hafiz Abid Qadeer 275592e714 Provide default location of sysroot for Baremetal toolchain.
Currently, Baremetal toolchain requires user to pass a sysroot location
using a --sysroot flag. This is not very convenient for the user. It also
creates problem for toolchain vendors who don't have a fixed location to
put the sysroot bits.

Clang does provide 'DEFAULT_SYSROOT' which can be used by the toolchain
builder to provide the default location. But it does not work if toolchain
is targeting multiple targets e.g. arm-none-eabi/riscv64-unknown-elf which
clang is capable of doing.

This patch tries to solve this problem by providing a default location of
the toolchain if user does not explicitly provides --sysroot. The exact
location and name can be different but it should fulfill these conditions:

1. The sysroot path should have a target triple element so that multi-target
toolchain problem (as I described above) could be addressed.

2. The location should not be $TOP/$Triple as this is used by gcc generally
and will be a problem for installing both gcc and clang based toolchain at
the same location.

Reviewed By: jroelofs

Differential Revision: https://reviews.llvm.org/D92677
2020-12-07 09:19:52 +00:00
Fangrui Song 5755522b5a Sema.h: delete unused variables/functions/type aliases 2020-12-06 20:39:01 -08:00
Fangrui Song 192fb1bd8a [Sema] Delete unused declarations
Notes about some declarations:

* clang::Sema::endsWithnarrowing: deleted by rC148381
* clang::Sema::ConvertIntegerToTypeWarnOnOverflow: deleted by rC214678
* clang::Sema::FreePackedContext: deleted by rC268085
* clang::Sema::ComputeDefaulted*: deleted by rC296067
2020-12-06 20:16:00 -08:00
Fangrui Song a2f922140f [TableGen] Delete 11 unused declarations 2020-12-06 13:21:07 -08:00
Vitaly Buka 1f21f6d6a4 [NFC][CodeGen] Simplify SanitizeDtorMembers::Emit 2020-12-05 21:11:27 -08:00
Vitaly Buka 452eddf30b [NFC][CodeGen] Add sanitize-dtor-zero-size-field test
The test demonstrates invalid behaviour which will be fixed soon.
2020-12-05 16:39:48 -08:00
Benjamin Kramer 2a136a7a9c [X86] Autodetect znver3 2020-12-05 19:08:20 +01:00
mydeveloperday 8668eae2ad [clang-format] Add option for case sensitive regexes for sorted includes
I think the title says everything.

Reviewed By: MyDeveloperDay

Patch By:  HazardyKnusperkeks

Differential Revision: https://reviews.llvm.org/D91507
2020-12-05 16:33:21 +00:00
mydeveloperday 0e226d00d2 [clang-format] [NFC] keep clang-format tests clang-format clean
I use several of the clang-format clean directories as a test suite, this one had got slightly out of wack in a prior commit

Reviewed By: HazardyKnusperkeks

Differential Revision: https://reviews.llvm.org/D92666
2020-12-05 10:15:52 +00:00
Fangrui Song 1ab9327d1c [TargetMachine][CodeGenModule] Delete unneeded ppc32 special case from shouldAssumeDSOLocal
PPCMCInstLower does not actually call shouldAssumeDSOLocal for ppc32 so this is dead.
Actually Clang ppc32 does produce a pair of absolute relocations which match GCC.

This also fixes a comment (R_PPC_COPY and R_PPC64_COPY do exist).
2020-12-05 00:42:07 -08:00
Hsiangkai Wang 5e953a274b [RISCV] Define preprocessor definitions for 'V' extension.
Differential Revision: https://reviews.llvm.org/D92650
2020-12-05 08:34:32 +08:00
Alex Lorenz db226cdf4c [objc] diagnose protocol conformance in categories with direct members
in their corresponding class interfaces

Categories that add protocol conformances to classes with direct members should prohibit protocol
conformances when the methods/properties that the protocol expects are actually declared as 'direct' in the class.

Differential Revision: https://reviews.llvm.org/D92602
2020-12-04 15:55:34 -08:00
Alex Lorenz eddd1d192b [clang] add a `swift_async_name` attribute
The swift_async_name attribute provides a name for a function/method that can be used
to call the async overload of this method from Swift. This name specified in this attribute
assumes that the last parameter in the function/method its applied to is removed when
Swift invokes it, as the the Swift's await/async transformation implicitly constructs the callback.

Differential Revision: https://reviews.llvm.org/D92355
2020-12-04 15:55:29 -08:00
Alex Lorenz 03dcd57ecf [clang] add a new `swift_attr` attribute
The swift_attr attribute is a generic annotation attribute that's not used by clang,
but is used by the Swift compiler. The Swift compiler can use these annotations to provide
various syntactic and semantic sugars for the imported Objective-C API declarations.

Differential Revision: https://reviews.llvm.org/D92354
2020-12-04 15:53:24 -08:00
Duncan P. N. Exon Smith d126943251 Index: Remove unused internal header SimpleFormatContext.h, NFC
Looks like nothing has included this header since
d21485d2f5 / r286279 in 2016. Delete the
dead code.
2020-12-04 15:10:27 -08:00
shafik 6333871f85 Add diagnostic for for-range-declaration being specificed with thread_local
Currently we have a diagnostic that catches the other storage class specifies for the range based for loop declaration but we miss the thread_local case. This changes adds a diagnostic for that case as well.

Differential Revision: https://reviews.llvm.org/D92671
2020-12-04 15:06:35 -08:00
Duncan P. N. Exon Smith b4f4fc6872 ASTImporter: Migrate to the FileEntryRef overload of SourceManager::createFileID, NFC
Migrate `ASTImporter::Import` over to using the `FileEntryRef` overload
of `SourceManager::createFileID`. No functionality change here.

Differential Revision: https://reviews.llvm.org/D92529
2020-12-04 14:45:59 -08:00
Duncan P. N. Exon Smith 9ae0a46f2b ARCMigrate: Initialize fields in EditEntry inline, NFC
Initialize the fields inline instead of having to manually write out a
default constructor.

Differential Revision: https://reviews.llvm.org/D92597
2020-12-04 14:43:22 -08:00
Duncan P. N. Exon Smith 1b023f54b6 Frontend: Use translateLineCol instead of translateFileLineCol, NFC
`ParseDirective` in VerifyDiagnosticConsumer.cpp is already calling
`translateFile`, so use the `FileID` returned by that to call
`translateLineCol` instead of using the more heavyweight
`translateFileLineCol`.

No functionality change here.
2020-12-04 14:37:48 -08:00
Alexey Bataev d764ad72e5 [OPENMP]Fix PR48394: need to capture variables used in atomic constructs.
The variables used in atomic construct should be captured in outer
task-based regions implicitly. Otherwise, the compiler will crash trying
to find the address of the local variable.

Differential Revision: https://reviews.llvm.org/D92682
2020-12-04 13:08:54 -08:00
Sam McCall 650e04e179 [Tooling] JSONCompilationDatabase::loadFromBuffer retains the buffer, copy it.
This function doesn't seem to be used in-tree outside tests.
However clangd wants to use it soon, and having the CDB be self-contained seems
reasonable.

Differential Revision: https://reviews.llvm.org/D92646
2020-12-04 21:54:55 +01:00
Duncan P. N. Exon Smith d10f9863a5 ADT: Migrate users of AlignedCharArrayUnion to std::aligned_union_t, NFC
Prepare to delete `AlignedCharArrayUnion` by migrating its users over to
`std::aligned_union_t`.

I will delete `AlignedCharArrayUnion` and its tests in a follow-up
commit so that it's easier to revert in isolation in case some
downstream wants to keep using it.

Differential Revision: https://reviews.llvm.org/D92516
2020-12-04 12:34:49 -08:00
mydeveloperday 88c21f8488 [clang-format] NFC update in the overall clang-formatted status
The current state of the clang-formatted-ness of the LLVM project hasn't been updated since June bring it upto date
2020-12-04 20:10:10 +00:00
Artem Belevich 4326792942 [CUDA] Another attempt to fix early inclusion of <new> from libstdc++
Previous patch (9a465057a6) did not fix the problem.
https://bugs.llvm.org/show_bug.cgi?id=48228

If the <new> is included too early, before CUDA-specific defines are available,
just include-next the standard <new> and undo the include guard.  CUDA-specific
variants of operator new/delete will be declared if/when <new> is used from the
CUDA source itself, when all CUDA-related macros are available.

Differential Revision: https://reviews.llvm.org/D91807
2020-12-04 12:03:35 -08:00
Duncan P. N. Exon Smith 5b267fb796 ADT: Stop peeking inside AlignedCharArrayUnion, NFC
Update all the users of `AlignedCharArrayUnion` to stop peeking inside
(to look at `buffer`) so that a follow-up patch can replace it with an
alias to `std::aligned_union_t`.

This was reviewed as part of https://reviews.llvm.org/D92512, but I'm
splitting this bit out to commit first to reduce churn in case the
change to `AlignedCharArrayUnion` needs to be reverted for some
unexpected reason.
2020-12-04 11:07:42 -08:00