David Majnemer [Tue, 9 Jun 2015 06:30:01 +0000 (06:30 +0000)]
[Driver] Preserve the object file format in ComputeEffectiveClangTriple
The object file format is sometimes overridden for MSVC targets to use
ELF instead of COFF. Make sure we preserve this choice when setting the
msvc version number in the triple.
David Majnemer [Tue, 9 Jun 2015 02:41:08 +0000 (02:41 +0000)]
[MSVC Compatibility] Don't diagnose c-style cast from void-ptr to fn-ptr
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.
Hans Wennborg [Tue, 9 Jun 2015 00:39:09 +0000 (00:39 +0000)]
Enable DLL attribute propagation on explicit instantiation definitions (PR23770)
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.
Hans Wennborg [Tue, 9 Jun 2015 00:39:03 +0000 (00:39 +0000)]
Enable propagation of dll attributes to previously instantiated base class templates in some cases
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).
Hans Wennborg [Tue, 9 Jun 2015 00:38:56 +0000 (00:38 +0000)]
Narrow the -Wunsupported-dll-base-class-template warning.
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.
Richard Smith [Tue, 9 Jun 2015 00:35:49 +0000 (00:35 +0000)]
[modules] Fix some visibility issues with default template arguments.
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.
Tyler Nowicki [Mon, 8 Jun 2015 23:13:43 +0000 (23:13 +0000)]
Correct Loop Hint Diagnostic Message
When pragma clang loop unroll() is specified without an argument the diagnostic message should inform that user that 'full' and 'disable' are valid arguments (not 'enable').
Hubert Tong [Mon, 8 Jun 2015 21:59:59 +0000 (21:59 +0000)]
Consider unsigned long for non-u/U decimal literals (C90/C++03)
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.
Fix for PR14269: Clang crashes when a bit field is used as inline assembler
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.
John Brawn [Fri, 5 Jun 2015 13:34:11 +0000 (13:34 +0000)]
[ARM] Use TargetParser to determine FPU subtarget features
The main effect of this is to fix anomalies where certain -mfpu options didn't
disable everything that they should causing strange behaviour when combined
with -mcpu or -march values that themselves enabled fpu subtarget features,
e.g. -mfpu=fpv5-dp-d16 with -march=armv7em previously behaved the same as
-mfpu=fpv5-sp-d16 due to fp-only-sp not being disabled.
Invalid -mfpu options now also give an error, which is consistent with the
handling of the .fpu directive.
Hubert Tong [Fri, 5 Jun 2015 01:10:24 +0000 (01:10 +0000)]
[Concepts] lex keywords: concept and requires
Summary:
This patch enables lexing of `concept` and `requires` as keywords.
Further changes which add messages for future keyword compat are to
follow.
Test Plan:
Testing of C++14 + Concepts TS mode is added to
`test/Lexer/keywords_test.cpp`, which expects that the new keywords are
enabled under said mode.
Bill Seurer [Thu, 4 Jun 2015 18:45:44 +0000 (18:45 +0000)]
[PowerPC] This revision adds 68 of the missing "Predefined Functions for Vector Programming" from appendix A of the OpenPOWER ABI for Linux Supplement document.
I also added tests for the new functions and updated another test that was looking for specific line numbers in error messages from altivec.h.
James Y Knight [Thu, 4 Jun 2015 15:36:29 +0000 (15:36 +0000)]
[SPARC] Fix types of size_t, intptr_t, and ptrdiff_t on Linux.
They should be 'int' instead of 'long int' everywhere else except
NetBSD too, from what I gather in GCC's spec files. So, optimistically
changing it for everyone else, too.
James Y Knight [Thu, 4 Jun 2015 04:15:33 +0000 (04:15 +0000)]
Fix fragile source-col-map.c test-case.
The test passing was dependent upon your source tree being checked out
in a directory with a long enough path, to cause the diagnostics to
wrap at the expected locations.
Use stdin instead, so that the error messages consistently use
<stdin> as the filename, and get wrapped consistently.
Ahmed Bougacha [Thu, 4 Jun 2015 01:43:41 +0000 (01:43 +0000)]
[CodeGen][NEON] Emit constants for "immediate" intrinsic arguments.
On ARM/AArch64, we currently always use EmitScalarExpr for the immediate
builtin arguments, instead of directly emitting the constant. When the
overflow sanitizer is enabled, this generates overflow intrinsics
instead of constants, breaking assumptions in various places.
Instead, use the knowledge of "immediates" to directly emit a constant:
- teach the tablegen backend to emit the "immediate" modifiers
- use those modifiers in the NEON CodeGen, on ARM and AArch64.
Justin Bogner [Thu, 4 Jun 2015 00:30:22 +0000 (00:30 +0000)]
Driver: Don't crash when generating crash reports for *-header inputs
If we crash while handling headers, the crash report mechanism
currently tries to make a string out of a null pointer when it tries
to make up a file extension.
Map *-header input types to reasonable extensions to avoid this.
Russell Gallop [Wed, 3 Jun 2015 15:09:13 +0000 (15:09 +0000)]
[utils] Improvements to check_cfc.py to work better with some build systems.
Recognise options to output dependency files and don't perform checks.
Report input file name when reporting a check failure so it is more obvious in large build logs.
Russell Gallop [Wed, 3 Jun 2015 14:33:57 +0000 (14:33 +0000)]
[utils] Add exact check to check_cfc.py dash_s_no_change.
Files compiled with -via-file-asm should be byte for byte identical. This
change improves the checking on dash_s_no_change to detect non-code
differences. If there is a difference, the check goes on to compare code and
debug to try and be more informative.
Manuel Klimek [Wed, 3 Jun 2015 13:10:41 +0000 (13:10 +0000)]
Allow replacements created from token ranges to specify language options.
The default language options will lead to incorrect replacements in C++
code, for example when trying to replace nested name specifiers ending
in "::".
David Majnemer [Wed, 3 Jun 2015 00:26:35 +0000 (00:26 +0000)]
[Sema] Make the atomic builtins more efficient by reducing volatility
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.
David Majnemer [Tue, 2 Jun 2015 22:15:12 +0000 (22:15 +0000)]
[MSVC Compatibility] Permit static_cast from void-ptr to function-ptr
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.
[x86-64 ABI] Fix for PR23082: an assertion failure when passing/returning a wrapper union in a full YMM register.
This patch fixes an assertion failure in method
'X86_64ABIInfo::GetByteVectorType'.
Method 'GetByteVectorType' (in TargetInfo.cpp) is responsible
for mapping a QualType 'Ty' (for an argument or return value) to an LLVM IR
type that, according to the ABI, must be passed in a XMM/YMM vector register.
When selecting the IR vector type, method 'GetByteVectorType' always tries to
choose the "best" IR vector type for the 'Ty' in input. In particular, if Ty
is a wrapper structure, it keeps unwrapping it until it finds a vector type VTy.
That VTy is the "preferred IR type".
However, function 'isSingleElementStructure' (used to unwrap structures) does
not know how to look through union types. So, before this patch, if Ty was in
a nest of wrapper structures with at least two union types, we would have
triggered an assertion failure (added at revision 230971).
With this patch, if method 'GetByteVectorType' fails to find the preferred
vector type, we just return a valid (although potentially 'less friendly')
vector type based on the type size. So, rather than asserting on an 'unexpected'
'Ty' in input, we conservatively return vector type <2 x double> if Ty is 16
bytes, or <4 x double> if Ty is 32 bytes.
Sanjay Patel [Tue, 2 Jun 2015 16:55:12 +0000 (16:55 +0000)]
add the -mrecip driver flag and process its options (2nd try)
The first try to land this (r238055) was reverted due to bot failures
caused by the LLVM part of the patch. That was hopefully fixed by r238788,
and the LLVM patch was resubmitted at r238842.
This is the front-end counterpart to D8982.
The -mrecip option interface is based on maintaining compatibility with gcc:
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/i386-and-x86-64-Options.html#index-mrecip_003dopt-1627
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/RS_002f6000-and-PowerPC-Options.html#index-mrecip-2289
...while adding more functionality (allowing users to specify the number of refinement steps for each
estimate type).
Manuel Klimek [Tue, 2 Jun 2015 12:01:50 +0000 (12:01 +0000)]
Make vim also output a helpful message in some error cases.
When clang-format encounters a syntax error, it will not format that
line; we're now using the same mechanism we're already using in emacs to
show a helpful error message to the user.
David Majnemer [Mon, 1 Jun 2015 07:41:37 +0000 (07:41 +0000)]
[MS ABI] Be a little more defensive wrt vector types
We probably shouldn't say that all appropriately sized vector types are
intel vector types (i.e. __m128, etc.) as they don't exist for all
architectures. While this is largely academic, it'd save some debugging
if we supported such a platform.
Daniel Jasper [Sun, 31 May 2015 08:51:54 +0000 (08:51 +0000)]
clang-format: NFC. Cleanup after r237895.
Specifically adhere to LLVM Coding Standards (no 'else' after
return/break/continue) and remove yet another implementation of
paren counting. We already have enough of those in the
UnwrappedLineParser.
David Majnemer [Sat, 30 May 2015 09:12:07 +0000 (09:12 +0000)]
[CodeGen] Indirect fields can initialize a union
The first named data member is the field used to default initialize the
union. An IndirectFieldDecl can introduce the first named data member
of a union.
projects / clang / log