in section 10.1, __arm_{w,r}sr{,p,64}.
This includes arm_acle.h definitions with builtins and codegen to support
these, the intrinsics are implemented by generating read/write_register calls
which get appropriately lowered in the backend based on the register string
provided. SemaChecking is also implemented to fault invalid parameters.
Differential Revision: http://reviews.llvm.org/D9697
llvm-svn: 239737
The underlying problem in PR23823 already existed before my recent change
in r239558, but that change made it worse (failing not only for undeclared
symbols, but also failed overload resolution). This makes Clang not try to
delay the lookup in SFINAE context. I assume no current code is relying on
SFINAE working with lookups that need to be delayed, because that never
seems to have worked.
Differential Revision: http://reviews.llvm.org/D10417
llvm-svn: 239639
We would get this right in the case where an explicit cast was formed
but not when we were performing an implicit conversion.
This fixes PR23828.
llvm-svn: 239625
Since we're ignoring the tune= and fpmath= attributes go ahead
and add a warning alerting people to the fact that we're going
to ignore that part of it during code generation and tie it to
the attribute warning set.
llvm-svn: 239583
Modeled after the gcc attribute of the same name, this feature
allows source level annotations to correspond to backend code
generation. In llvm particular parlance, this allows the adding
of subtarget features and changing the cpu for a particular function
based on source level hints.
This has been added into the existing support for function level
attributes without particular verification for any target outside
of whether or not the backend will support the features/cpu given
(similar to section, etc).
llvm-svn: 239579
Specifying #pragma clang loop vectorize(assume_safety) on a loop adds the
mem.parallel_loop_access metadata to each load/store operation in the loop. This
metadata tells loop access analysis (LAA) to skip memory dependency checking.
llvm-svn: 239572
This patch does two things in order to enable compilation of the problematic code in PR23810:
1. In Sema::buildOverloadedCallSet, it postpones lookup for MS mode when no
viable candidate is found in the overload set. Previously, lookup would only
be postponed here if the overload set was empty.
2. Make BuildRecoveryCallExpr call Sema::DiagnoseEmptyLookup under more circumstances.
There is a comment in DiagnoseTwoPhaseLookup that says "Don't diagnose names we find in
classes; we get much better diagnostics for these from DiagnoseEmptyLookup." The problem
was that DiagnoseEmptyLookup might not get called later, and we failed to recover.
Differential Revision: http://reviews.llvm.org/D10369
llvm-svn: 239558
If definition of a class is unknown and out-of-line definition of its
member is encountered, do not parse the member declaration.
This change fixes PR18542.
Differential Revision: http://reviews.llvm.org/D8010
llvm-svn: 239483
it doesn't work correctly when a structure is declared before pragma
and then a function with the same name declared after pragma.
Patch by Andrey Bokhanko
Differential Revision: http://reviews.llvm.org/D10187
llvm-svn: 239466
Based on previous discussion on the mailing list, clang currently lacks support
for C99 partial re-initialization behavior:
Reference: http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-April/029188.html
Reference: http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_253.htm
This patch attempts to fix this problem.
Given the following code snippet,
struct P1 { char x[6]; };
struct LP1 { struct P1 p1; };
struct LP1 l = { .p1 = { "foo" }, .p1.x[2] = 'x' };
// this example is adapted from the example for "struct fred x[]" in DR-253;
// currently clang produces in l: { "\0\0x" },
// whereas gcc 4.8 produces { "fox" };
// with this fix, clang will also produce: { "fox" };
Differential Review: http://reviews.llvm.org/D5789
llvm-svn: 239446
The machinery added to permit a static_cast from void-ptr to fn-ptr
unintentionally gets triggered for c-style casts and function-style
casts. The observable effect was a diagnostic issued inappropriately.
llvm-svn: 239382
This is a follow-up to r225570 which enabled adding DLL attributes when a
class template goes from explicit instantiation declaration to explicit
instantiation definition.
llvm-svn: 239375
It is safe to add a dll attribute if the base class template previously only had
an explicit instantiation declaration, or was implicitly instantiated.
I both those cases, the members would not have been codegenned yet. In the case
of explicit instantiation declaration this is natural, and for implicit
instantiations, codegen is deferred (see r225570).
This is work towards fixing PR23770.
llvm-svn: 239373
Don't warn about not being able to propagate dll attribute to a base class template
when that base already has a different attribute.
MSVC doesn't actually try to do this; the first attribute that was propagated
takes precedence, so Clang is already doing the right thing and there's no
need to warn.
(This is a step towards fixing PR21718.)
llvm-svn: 239372
There are still problems here, but this is a better starting point.
The main part of the change is: when doing a lookup that would accept visible
or hidden declarations, prefer to produce the latest visible declaration if
there are any visible declarations, rather than always producing the latest
declaration.
Thus, when we inherit default arguments (and other properties) from a previous
declaration, we inherit them from the previous visible declaration; if the
previous declaration is hidden, we already suppress inheritance of default
arguments.
There are a couple of other changes here that fix latent bugs exposed by this
change.
llvm-svn: 239371
Summary:
This modifies Clang to reflect that under pre-C99 ISO C, decimal
constants may have type `unsigned long` even if they do not contain `u`
or `U` in their suffix (C90 subclause 6.1.3.2 paragraph 5). The same is
done for C++ without C++11 which--because of undefined behaviour--allows
for behaviour compatible with ISO C90 in the case of an unsuffixed
decimal literal and is otherwise identical to C90 in its treatment of
integer literals (C++03 subclause 2.13.1 [lex.icon] paragraph 2).
Messages are added to the `c99-compat` and `c++11-compat` groups to warn
on such literals, since they behave differently under the newer
standards.
Fixes PR 16678.
Test Plan:
A new test file is added to exercise both pre-C99/C++11 and C99/C++11-up
on decimal literals with no suffix or suffixes `l`/`L` for both 32-bit
and 64-bit `long`.
In the file, 2^31 (being `INT_MAX+1`) is tested for the expected type
using `__typeof__` and multiple declarations of the same entity. 2^63
is similarly tested when it is within the range of `unsigned long`.
Preprocessor arithmetic tests are added to ensure consistency given
that Clang (like GCC) uses greater than 32 bits for preprocessor
arithmetic even when `long` and `unsigned long` is 32 bits and a
pre-C99/C++11 mode is in effect.
Tests added:
test/Sema/PR16678.c
Reviewers: fraggamuffin, rsmith
Reviewed By: rsmith
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D9794
llvm-svn: 239356
input / output with memory constraint.
One generally can't get address of a bit field, so the general solution is to
error on such cases. GCC does the same.
Patch by Andrey Bokhanko
Differential Revision: http://reviews.llvm.org/D10086
llvm-svn: 239153
Summary:
This patch is part of http://llvm-reviews.chandlerc.com/D2181.
In-class initializers are appended to the CFG when CFGBuilder::addInitializer is called.
Reviewers: jordan_rose, rsmith
Reviewed By: jordan_rose
Subscribers: cfe-commits, klimek
Differential Revision: http://reviews.llvm.org/D2370
llvm-svn: 238913
The parameter types and return type do not need to be volatile just
because the pointer type's pointee type is volatile qualified. This is
an unnecessary pessimization.
llvm-svn: 238892
The MSVC 2013 and 2015 implementation of std::atomic is specialized for
pointer types. The member functions are implemented using a static_cast
from void-ptr to function-ptr which is not allowed in the standard.
Permit this conversion if -fms-compatibility is present.
This fixes PR23733.
llvm-svn: 238877
We catch most of the various other __fp16 implicit conversions to
float, but not this one:
__fp16 a;
int i;
...
a += i;
For which we used to generate something 'fun' like:
%conv = sitofp i32 %i to float
%1 = tail call i16 @llvm.convert.to.fp16.f32(float %conv)
%add = add i16 %0, %1
Instead, when we have an __fp16 LHS and an integer RHS, we should
use float as the result type.
While there, add a bunch of missing tests for mixed
__fp16/integer expressions.
llvm-svn: 238625
If the type isn't trivially moveable emplace can skip a potentially
expensive move. It also saves a couple of characters.
Call sites were found with the ASTMatcher + some semi-automated cleanup.
memberCallExpr(
argumentCountIs(1), callee(methodDecl(hasName("push_back"))),
on(hasType(recordDecl(has(namedDecl(hasName("emplace_back")))))),
hasArgument(0, bindTemporaryExpr(
hasType(recordDecl(hasNonTrivialDestructor())),
has(constructExpr()))),
unless(isInTemplateInstantiation()))
No functional change intended.
llvm-svn: 238601
this fixes http://llvm.org/PR17424
fillAttributedTypeLoc() function is only called with AttributeLists of either
DeclarationChunk (which is used for each type in a declarator being parsed) or
DeclSpec (which captures information about declaration specifiers).
As C++11 attributes actually appertain to declarators, they are moved straight
to the declarator’s attr list in distributeFunctionTypeAttrFromDeclSpec()
function.
'Put them wherever you like' semantics is not supported for C++11 attributes
(but is allowed for GNU attributes, for example). So when we meet an attribute
while parsing the declaration, we cannot be sure if it appertains to either
DeclarationChunk or DeclSpec.
This investigation correlates with the history of changes of SemaType.cpp:
• Asserts in fillAttributedTypeLoc() were added on 3 Mar 2011 in r126986
(http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-
20110228/039638.html);
• Distributing C++11 attrs to the declarator was added on 14 Jan 2013
in r172504 (http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-
20130114/071830.html).
Considering all written above I changed asserts in fillAttributedTypeLoc()
to nullptr checks.
This fixes PR17424 and related assertion on
[[gnu::fastcall]] void __stdcall foo();
Author: Alexey Frolov
Differential Revision: http://reviews.llvm.org/D9288
llvm-svn: 238550
Previously, we wouldn't call checkDLLAttribute() after the class template
specialization definition if the class template was already instantiated
by an explicit class template specialization declaration.
llvm-svn: 238266
An AtomicType might be hidden behind arbitrary levels of typedefs.
getAs<> will reliably walk through the sugar to get the underlying
AtomicType.
This fixes PR23638.
llvm-svn: 238083
The method wasn't an overrider but didn't have 'virtual' textually
written because our CXXMethodDecl was an out-of-line definition. Make
sure we use the canonical decl instead.
This fixes PR23629.
llvm-svn: 237999
Add a check for bool-like conversions for the condition expression of
conditional operators. This is similiar to the checking of condition
expressions of if statements, for-loops, while-loops, and do-while loops.
Specificially, this is to fix the problem of assert("message") not triggering
-Wstring-conversion when the assert macro uses a conditional operator.
llvm-svn: 237856
Patch fixes codegen for aggregate copying of VLAs. Currently method CodeGenFunction::EmitAggregateCopy() does not support copying of VLAs. Patch checks if the size of the type is 0, then checks if the type is actually a variable-length array. Then it calculates total length for this array and calculates total size of the array in bytes:
<total number of elements in array> * aligned_sizeof(ElementType) (if copy assignment is requested).
If simple copying is requested, size is calculated like:
<total number of elements in array> * aligned_sizeof(ElementType) - aligned_sizeof(ElementType) + sizeof(ElementType).
memcpy() is used with this calculated size of the VLA.
Differential Revision: http://reviews.llvm.org/D9851
llvm-svn: 237768
Richard Smith