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5868 Commits

Author SHA1 Message Date
Alexander Kornienko 21de0ae3d4 Re-apply "r226548 - Introduce SPIR calling conventions" reverted in r226558.
The test was fixed after a discussion with the revision author: the check
pattern was made more flexible as the "%call" part is not what we actually want
to check strictly there.

The original patch description:
===
Introduce SPIR calling conventions.

This implements Section 3.7 from the SPIR 1.2 spec:

    SPIR kernels should use "spir_kernel" calling convention.
    Non-kernel functions use "spir_func" calling convention. All
    other calling conventions are disallowed.

The patch works only for OpenCL source. Any other uses will need
to ensure that kernels are assigned the spir_kernel calling
convention correctly.
===

llvm-svn: 226561
2015-01-20 11:20:41 +00:00
Alexander Kornienko 22c9d67e34 Reverting r226548 as one of the tests fails in some configurations.
Here's the fail log from our internal setup:
===
  .../tools/clang/clang -cc1 -internal-isystem .../tools/clang/staging/include -nostdsysteminc .../tools/clang/test/CodeGenOpenCL/spir-calling-conv.cl -triple spir-unknown-unknown -emit-llvm -o -
  FileCheck .../tools/clang/test/CodeGenOpenCL/spir-calling-conv.cl
.../tools/clang/test/CodeGenOpenCL/spir-calling-conv.cl:11:12: error: expected string not found in input
 // CHECK: %call = tail call spir_func i32 @get_dummy_id(i32 0)
           ^
<stdin>:6:52: note: scanning from here
define spir_kernel void @foo(i32 addrspace(1)* %A) #0 {
                                                   ^
<stdin>:7:2: note: possible intended match here
 %1 = tail call spir_func i32 @get_dummy_id(i32 0) #2
 ^
===

Here's a failure on a public CI server:
http://lab.llvm.org:8080/green/job/clang-stage2-configure-Rlto_check/1183/

llvm-svn: 226558
2015-01-20 10:55:33 +00:00
Sameer Sahasrabuddhe 450a58b8af Introduce SPIR calling conventions.
This implements Section 3.7 from the SPIR 1.2 spec:

    SPIR kernels should use "spir_kernel" calling convention.
    Non-kernel functions use "spir_func" calling convention. All
    other calling conventions are disallowed.

The patch works only for OpenCL source. Any other uses will need
to ensure that kernels are assigned the spir_kernel calling
convention correctly.

llvm-svn: 226548
2015-01-20 06:44:32 +00:00
David Blaikie a81d410d4f DebugInfo: Correct the debug location of non-static data member initializers
This was causing some trouble for otherwise dead code removed in r225085
(reverted in r225361). The location being set for function arguments was
leaking out to the call which wasn't setting its own location (so a
quality bug turned into a crasher with r225085). Fix this so r225085 can
be recommitted.

llvm-svn: 226382
2015-01-18 00:12:58 +00:00
Chandler Carruth 6f4d3a2e39 [msan] Fix a uninitialized-use bug in the template argument diffing
logic.

In one place we would try to check for the difference between integers
even if we were missing one of the integers. This would eventually end
up reading uninitialized data out of the APSInt objects. The fix is to
short circuit the sameness test when we don't have integers on both
sides.

This fixes a test failure I was seeing with MSan. Not sure whether other
bots were seeing it or not, but yay MSan. In particular the feature to
very carefully track origins back through stores throughout the program
was invaluable.

llvm-svn: 226375
2015-01-17 14:20:14 +00:00
Jordan Rose 16ba553f75 ObjC getters with names like "newItem" should still be linked to the @property.
Two years ago I added a compile-time "optimization" to
ObjCMethodDecl::findPropertyDecl: exit early if the current method is part
of a special Objective-C method family (like 'new' or 'init'). However, if a
property (declared with @property) has a name that matches a method family,
the getter picks up that family despite being declared by the property. The
early exit then made ObjCMethodDecl::findPropertyDecl decide that there
was no associated property, despite the method itself being marked as an
accessor. This corrects that by removing the early exit.

This does /not/ change the fact that such a getter is considered to return a
value with a +1 retain count. The best way to eliminate this is by adding the
objc_method_family(none) attribute to the getter, but unlike the existing
ns_returns_not_retained that can't be applied directly to the property -- you
have to redeclare the getter instead.

(It'd be nice if @property just implied objc_method_family(none) for its
getter, but that would be a backwards-incompatible change.)

rdar://problem/19038838

llvm-svn: 226338
2015-01-16 23:04:26 +00:00
Sean Silva 2a995148e8 Fix some copypasta typos in asserts.
Fixes PR22236

Patch by Nicolas Brunie! <nicolas.brunie@kalray.eu>

llvm-svn: 226328
2015-01-16 21:44:26 +00:00
David Majnemer 10fd83d11f AST: alignof might be dependent because of alignment attributes
Dependent alignment attributes should make an alignof expression
dependent as well.

llvm-svn: 226156
2015-01-15 10:04:14 +00:00
David Majnemer f8637360e2 AST: Ensure implicit records have default visibility
Types composed with certain implicit record types would have their RTTI
marked as hidden because the implicit record type didn't have any
visibility.

This manifests itself as triggering false positives from tools like
clang's -fsantize=function feature.  The RTTI for a function type's
return type wouldn't match if the return type was an implicit record
type.

Patch by Stephan Bergmann!

llvm-svn: 226148
2015-01-15 08:41:25 +00:00
Alexey Bataev 19acc3d351 Rename RefersToCapturedVariable to RefersToEnclosingVariableOrCapture, NFC
llvm-svn: 225624
2015-01-12 10:17:46 +00:00
David Majnemer 4f217684c7 Sema: Dependent array designators cannot be checked
We forgot to mark designated initializer expression that contain type
dependent array designators as type dependent.  This would lead to
crashes when we try to determine which array element we were trying to
initialize.

This fixes PR22056.

llvm-svn: 225494
2015-01-09 01:39:09 +00:00
Richard Trieu 94a9ae776d Use APSInt::isSameValue instead of operator== in a place where two APSInt's
may have different sizes.  Fixes PR22017

llvm-svn: 225488
2015-01-09 00:58:16 +00:00
Nico Weber 227822e116 Document that GetTypeForDeclarator() cannot return a null type.
Also add a few asserts for this.  The existing code assumes this in a bunch
of places already (see e.g. the assert at the top of ParseTypedefDecl(), and
there are many unchecked calls on the result of GetTypeForDeclarator()), and
from looking through the code this should always be true from what I can tell.
This allows removing ASTContext::getNullTypeSourceInfo() too as that's now
unused.

No behavior change intended.

llvm-svn: 225125
2015-01-04 05:29:21 +00:00
David Majnemer 99b98f07d4 AST: Remove overzealous assertion from IsModifiable
It's reasonable to ask if an l-value with class type is modifiable.

llvm-svn: 225121
2015-01-04 00:44:32 +00:00
Aaron Ballman 409af50858 Volatile reads are side-effecting operations, but in the general case of access through a volatile-qualified type, we're not certain of the underlying object's side-effects on access.
Treat volatile accesses as "maybe" instead of "definite" side effects for the purposes of warning on evaluations in an unevaluated context. No longer diagnose on idiomatic code like:

int * volatile v;
(void)sizeof(*v);

llvm-svn: 225116
2015-01-03 17:00:12 +00:00
David Majnemer 738e58799c Sema: Don't crash when an inject class name has a nested redefinition
We expected the type of a TagDecl to be a TagType, not an
InjectedClassNameType.  Introduced a helper method, Type::getAsTagDecl,
to abstract away the difference; redefine Type::getAsCXXRecordDecl to be
in terms of it.

llvm-svn: 224898
2014-12-28 09:18:54 +00:00
Rafael Espindola 43eba818cd This reverts commit r224668 and r224667.
r224667 broke bootstrap on Fedora 20 X86_64 (at least).

See pr22006 for the details.

r224668 depends on r224667.

llvm-svn: 224770
2014-12-23 15:57:12 +00:00
David Majnemer 07bc611fb3 MS ABI: Make the string mangling code more concise
No functional change intended.

llvm-svn: 224696
2014-12-22 06:24:49 +00:00
Nico Weber 4701ffda95 Wrap to 80 columns. NfC.
llvm-svn: 224695
2014-12-22 05:21:03 +00:00
Richard Trieu 2cb463ed08 Fix a bunch of integer template argument problems in template type diffing.
Reverts most of the changes from r168005.  Since template arguments have proper
conversions now, no extending of integers is needed.  Further, since the
integers are the correct size now, use APSInt::operator== instead of
APSInt::hasSameValue since operator== will check the size and signness match.

Prior to one comparison of APSInt's, check that both are valid.  Previous, one
could be uninitialized.  Also changed APInt to APSInt in GetInt.  This
occassionally produced a sign flip, which will now be caught by operator==.

llvm-svn: 224668
2014-12-20 03:03:32 +00:00
Richard Trieu d787e8dc9d Fix for PR21758
When a non-type template argument expression needs a conversion to change it
into the argument type, preserve that information by remaking the
TemplateArgument with an expression that has those conversions.  Also a small
fix to template type diffing to handle the extra conversions in some cases.

llvm-svn: 224667
2014-12-20 02:42:08 +00:00
Aaron Ballman 6c93b3e29c Adding a -Wunused-value warning for expressions with side effects used in an unevaluated expression context, such as sizeof(), or decltype(). Also adds a similar warning when the expression passed to typeid() *is* evaluated, since it is equally likely that the user would expect the expression operand to be unevaluated in that case.
llvm-svn: 224465
2014-12-17 21:57:17 +00:00
Richard Smith 513955c487 Support constant evaluation for member calls on std::initializer_list
temporaries.

llvm-svn: 224449
2014-12-17 19:24:30 +00:00
Alexey Bataev 07649fb7c5 Renamed RefersToEnclosingLocal bitfield to RefersToCapturedVariable.
Bitfield RefersToEnclosingLocal of Stmt::DeclRefExprBitfields renamed to RefersToCapturedVariable to reflect latest changes introduced in commit 224323. Also renamed method Expr::refersToEnclosingLocal() to Expr::refersToCapturedVariable() and comments for constant arguments.
No functional changes.

llvm-svn: 224329
2014-12-16 08:01:48 +00:00
Nick Lewycky f0202ca775 Improve handling of value dependent expressions in __attribute__((enable_if)), both in the condition expression and at the call site. Fixes PR20988!
llvm-svn: 224320
2014-12-16 06:12:01 +00:00
David Majnemer 9963adeaef AST: Fix the linkage of static vars in fn template specializations
We that static variables in function template specializations were
externally visible.  The manglers assumed that externally visible static
variables were numbered in Sema.  We would end up mangling static
variables in the same specialization with the same mangling number which
would give all of them the same name.

This fixes PR21904.

llvm-svn: 224316
2014-12-16 04:52:14 +00:00
Alexander Musman c638868bdf First patch with codegen of the 'omp for' directive. It implements
the simplest case, which is used when no chunk_size is specified in
the schedule(static) or no 'schedule' clause is specified - the
iteration space is divided by the library into chunks that are
approximately equal in size, and at most one chunk is distributed
to each thread. In this case, we do not need an outer loop in each
thread - each thread requests once which iterations range it should
handle (using __kmpc_for_static_init runtime call) and then runs the
inner loop on this range.

Differential Revision: http://reviews.llvm.org/D5865

llvm-svn: 224233
2014-12-15 07:07:06 +00:00
David Majnemer 8c92b87cd0 AST: Limit zero-sized constexpr behavior to array types
Restricting this "extension" to array types maximizes our standards
conformance while not miscompiling real-world programs.

llvm-svn: 224215
2014-12-14 08:40:47 +00:00
John McCall 578a1f8c6d If a non-template constructor instantiated to X(X),
ignore it during overload resolution when initializing
X from a value of type cv X.

Previously, our rule here only ignored specializations
of constructor templates.  That's probably because the
standard says that constructors are outright ill-formed
if their first parameter is literally X and they're
callable with one argument.  However, Clang only
enforces that prohibition against non-implicit
instantiations; I'm not sure why, but it seems to be
deliberate.  Given that, the most sensible thing to
do is to just ignore the "illegal" constructor
regardless of where it came from.

Also, stop ignoring such constructors silently:
print a note explaining why they're being ignored.

Fixes <rdar://19199836>.

llvm-svn: 224205
2014-12-14 01:46:53 +00:00
Will Wilson 70a1568d91 NFC: Minor formatting fix
llvm-svn: 224185
2014-12-13 04:38:19 +00:00
Will Wilson 67c41ba0dd Pretty print support for template arg enum constants
llvm-svn: 224184
2014-12-13 04:31:07 +00:00
Evgeny Astigeevich 665027dbc4 Fix the issue of mangling of local anonymous unions (Itanium C++ ABI):
A discriminator is used for the first occurrence of a name.
inline int f1 () {
  static union {
    int a;
    long int b;
  };

  static union {
    int c;
    double d;
  };

  return a+c;
}
The name of the second union is mangled as _ZZ2f1vE1c_0 instead of _ZZ2f1vE1c.

Differential Revision: http://reviews.llvm.org/D6295

llvm-svn: 224131
2014-12-12 16:17:46 +00:00
David Majnemer 27db35878d AST: Incomplete types might be zero sized
Comparing the address of an object with an incomplete type might return
true with a 'distinct' object if the former has a size of zero.
However, such an object should compare unequal with null.

llvm-svn: 224040
2014-12-11 19:36:24 +00:00
Will Wilson e74c28105d MS ABI: Fix mangling of unsigned int template params
llvm-svn: 223999
2014-12-11 05:47:10 +00:00
David Majnemer 18fac3b1dd AST: Properly calculate the linkage of a IndirectFieldDecl
getLVForNamespaceScopeDecl believed that it wasn't possible for it to
ever see an IndirectFieldDecl.  However, this can occur when determining
whether or not something is a redeclaration of a member of an anonymous
static union.

This fixes PR21858.

llvm-svn: 223975
2014-12-10 22:58:14 +00:00
Sean Callanan b12a855ba8 Fixed an 80-column violation.
Thanks to Nico Weber for spotting this.

llvm-svn: 223966
2014-12-10 21:22:20 +00:00
Sean Callanan 49475327ff Fixed the AST importer ot use redeclaration contexts properly.
To ensure that we don't import duplicates, the ASTImporter often
checks the DeclContext for a Decl before importing it to see if
a Decl with the same name is already present.  

This is problematic if the Decl is inside a transparent context
like an extern "C" block.  Lookup isn't allowed on such contexts,
and in fact they assert() if you do that.  So instead we look at
the redeclaration context -- the containing context that can be
used safely for these kinds of checks -- instead.

llvm-svn: 223912
2014-12-10 03:09:41 +00:00
Sean Callanan 238d897b07 Made the ASTImporter resilient if it can't import
SourceLocations.  LLDB rarely has the same files
mapped into the target AST context as the source
AST context, so the ASTImporter shouldn't expect
to see those files there.

This started to become a problem when importing
entities from modules -- these have proper source
locations, in contrast to all the ASTs LLDB
creates which have empty ones.

llvm-svn: 223900
2014-12-10 01:26:39 +00:00
Sean Callanan 0aae04175b Updated the AST importer to support importing
LinkageSpecDecls.  This is relevant when LLDB
wants to import Decls from non-C++ modules,
since many declarations are in extern "C"
blocks.

llvm-svn: 223860
2014-12-10 00:00:37 +00:00
David Majnemer b511603281 AST: Don't assume two zero sized objects live at different addresses
Zero sized objects may overlap with each other or any other object.

This fixes PR21786.

llvm-svn: 223852
2014-12-09 23:32:34 +00:00
Hans Wennborg 76b005398d ASTDumper: print whether a function is constexpr
llvm-svn: 223538
2014-12-05 22:38:57 +00:00
Fariborz Jahanian 05834e2d5b This patch fixes a crash involving use of predefined
expressions. It fixes crash when mangling name for block's helper
function used inside a constructor/destructor. 
rdar://19065361.

llvm-svn: 223136
2014-12-02 18:42:51 +00:00
Nico Weber cda5c7c764 Fix typo.
llvm-svn: 222964
2014-11-29 23:57:35 +00:00
David Majnemer eea02eefe7 AST: Consider pseudo-struct builtin types as substitutable
We didn't consider types like ObjCSel as a substitution candidate.

This fixes PR21688.

llvm-svn: 222941
2014-11-28 22:22:46 +00:00
Anastasia Stulova 5d8ad8a7b8 [OpenCL] Implemented restrictions for pointer conversions specified in OpenCL v2.0.
OpenCL v2.0 s6.5.5 restricts conversion of pointers to different address spaces:
- the named address spaces (__global, __local, and __private) => __generic - implicitly converted;
- __generic => named - with an explicit cast;
- named <=> named - disallowed;
- __constant <=> any other - disallowed.

llvm-svn: 222834
2014-11-26 15:36:41 +00:00
Anastasia Stulova 2c8dcfbae6 [OpenCL] Generic address space has been added in OpenCL v2.0.
To support it in the frontend, the following has been added:  
- generic address space type attribute;
- documentation for the OpenCL address space attributes;
- parsing of __generic(generic) keyword;
- test code for the parser and diagnostics.

llvm-svn: 222831
2014-11-26 14:10:06 +00:00
David Majnemer 6fc2d813cb Simplify MicrosoftMangleContextImpl::shouldMangleStringLiteral
No functionality changed.

llvm-svn: 222610
2014-11-22 06:20:38 +00:00
David Majnemer 125efd8d4f MS ABI: Mangle u8 string literals
UTF8 string literals are mangled just like ASCII string literals.

llvm-svn: 222591
2014-11-21 23:56:50 +00:00
David Majnemer 98e77a2512 MS ABI: Mangle char16_t and char32_t string literals
We previously had support for char and wchar_t string literals.  VS 2015
added support for char16_t and char32_t.

String literals must be mangled in the MS ABI in order for them to be
deduplicated across translation units: their linker has no notion of
mergeable section.  Instead, they use the mangled name to make a COMDAT
for the string literal; the COMDAT will merge with other COMDATs in
other object files.

This allows strings in object files generated by clang to get merged
with strings in object files generated by MSVC.

llvm-svn: 222564
2014-11-21 19:57:25 +00:00
David Majnemer eca5a201f4 MS ABI: Mangle char16_t and char32_t types
These mangling make clang more compatible with MSVC 2015.
Correctly mangling char16_t and char32_t will take a little more work.

llvm-svn: 222515
2014-11-21 09:06:49 +00:00