Most of libc++'s header files don't use extension. This prevents
using git-clang-format on them, which is frustrating.
This patch allows empty extensions to be passed using either
the --extensions option, or the clangformat.extensions git-config
value.
llvm-svn: 305437
This function was previously making (correct) assumptions
without complete knowledge of MacroArgs guarantees for
Arguments. After going through Macro Args a bunch, I'd
corrected the getNumArguments (and changed its name),
however didn't realize this was depending on the behavior.
This patch has version that depends on the corrected
getNumMacroArguments's behavior, with the rest checked against
my knowledge of the MacroArgs' token list. Commiting no-wait
since the test is broken.
llvm-svn: 305434
Summary:
After r303941 it was not possible to setup ASAN_OPTIONS to have the same
behavior for pre r303941 and post r303941 builds.
Pre r303941 Asan does not accept handle_sigbus=2.
Post r303941 Asan does not accept allow_user_segv_handler.
This fix ignores allow_user_segv_handler=1, but for allow_user_segv_handler=0
it will upgrade flags like handle_sigbus=1 to handle_sigbus=2. So user can set
ASAN_OPTIONS=allow_user_segv_handler=0 and have same behavior on old and new
clang builds (except range from r303941 to this revision).
In future users which need to prevent third party handlers should switch to
handle_sigbus=2 and remove allow_user_segv_handler as soon as suport of older
builds is not needed.
Related bugs:
https://github.com/google/oss-fuzz/issues/675https://bugs.chromium.org/p/chromium/issues/detail?id=731130
Reviewers: eugenis
Subscribers: llvm-commits, kubamracek
Differential Revision: https://reviews.llvm.org/D34227
llvm-svn: 305433
The function num_get<_CharT>::stage2_int_prep makes unnecessary copy of src
into atoms when char_type is char. This can be avoided by creating
a switch on type and just returning __src when char_type is char.
Added the test case to demonstrate performance improvement.
In order to avoid ABI incompatibilities, the changes are guarded
with a macro _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET
Differential Revision: https://reviews.llvm.org/D30268
Reviewed by: EricWF
llvm-svn: 305427
correct getNumArguments
StringifiedArguments is allocated (resized) based on the size the
getNumArguments function. However, this function ACTUALLY currently
returns the amount of total UnexpArgTokens which is minimum the same as
the new implementation of getNumMacroArguments, since empty/omitted arguments
result in 1 UnexpArgToken, and included ones at minimum include 2
(1 for the arg itself, 1 for eof).
This patch renames the otherwise unused getNumArguments to be more clear
that it is the number of arguments that the Macro expects, and thus the maximum
number that can be stringified. This patch also replaces the explicit memset
(which results in value instantiation of the new tokens, PLUS clearing the
memory) with brace initialization.
Differential Revision: https://reviews.llvm.org/D32046
llvm-svn: 305425
NSString is loaded from the DWARF, which doesn't have the concept of protocols.
When this is used with the NSMutableDictionary type from Objective-C modules,
this produces errors of the form
error: cannot initialize a parameter of type 'id<NSCopying> _Nonnull' with an rvalue of type 'NSString *'
We're aware of these problems and have an internal bug report filed
(<rdar://problem/32777981>)
llvm-svn: 305424
In r304074 we introduce a patch to accept results from side effect free
functions into SCEV modeling. This causes rejection of cases where the
call is happening outside the SCoP. This patch checks if the call is
outside the Region and treats the results as a parameter (SCEVType::PARAM)
to the SCoP instead of returning SCEVType::INVALID.
Patch by Sameer Abu Asal.
llvm-svn: 305423
The current name (addModulePath) and return value
(ModulePathStringTableTy::iterator) is a little confusing. This
API adds a module, not just a path. And the iterator is basically
just an implementation detail of the summary index. Address
both of those issues by renaming to addModule and introducing a
ModuleSummaryIndex::ModuleInfo type that the function returns.
Differential Revision: https://reviews.llvm.org/D34124
llvm-svn: 305422
Instead use target_link_libraries directly. Thanks to
Juergen Ributzka for the suggestion, which fixes an issue
when llvm is configured with no targets.
llvm-svn: 305421
Summary:
At present, `-profile-guided-section-prefix` is a `cl::Optional` option, which means it demands to be passed exactly zero or one times. Our build system makes it pretty tricky to guarantee this. We often accidentally pass the flag more than once (but always with the same "false" value) which results in an error, after which compilation fails:
```
clang (LLVM option parsing): for the -profile-guided-section-prefix option: may only occur zero or one times!
```
While we work on improving our build system, it also seems reasonable just to allow `-profile-guided-section-prefix` to be passed more than once, by to `cl::ZeroOrMore`. Quoting [[ http://llvm.org/docs/CommandLine.html#controlling-the-number-of-occurrences-required-and-allowed | the documentation ]]:
> The cl::ZeroOrMore modifier ... indicates that your program will allow the option to be specified zero or more times.
> ...
> If an option is specified multiple times for an option of the cl::opt class, only the last value will be retained.
Reviewers: danielcdh
Reviewed By: danielcdh
Subscribers: twoh, david2050, llvm-commits
Differential Revision: https://reviews.llvm.org/D34219
llvm-svn: 305413
This way we end up not looking at PHI args already removed.
MemSSA now goes through the updater so we can prune
it to avoid having redundant MemoryPHI arguments, but that
doesn't quite work for the general case.
Discussed with Daniel Berlin, fixes PR33406.
llvm-svn: 305409
Summary:
This broke thread_local_quarantine_pthread_join.cc on some architectures, due
to the overhead of the stashed regions. Reverting while figuring out the best
way to deal with it.
Reviewers: alekseyshl
Reviewed By: alekseyshl
Subscribers: llvm-commits, kubamracek
Differential Revision: https://reviews.llvm.org/D34213
llvm-svn: 305404
Add checking for the second parameter of altivec conversion builtin to make sure
it is compile-time constant int.
This patch fixes PR33212: PPC vec_cst useless at -O0
Differential Revision: https://reviews.llvm.org/D34092
llvm-svn: 305401
There's an early out that's trying to detect when we don't know any bits that make up the legal range of a shift. The code subtracts one from BitWidth which creates a mask in the lower bits for power of 2 bit widths. This is then ANDed with the known bits to see if any of those bits are known. If the bit width isn't a power of 2 this creates a non-sensical mask.
This patch corrects this by rounding up to a power of 2 before doing the subtract and mask.
Differential Revision: https://reviews.llvm.org/D34165
llvm-svn: 305400
We know that shuffle masks are power-of-2 sizes, but there's no way (?) for LLVM to know that,
so hack combineX86ShufflesRecursively() to be much faster by replacing div/rem with shift/mask.
This makes the motivating compile-time bug in PR32037 ( https://bugs.llvm.org/show_bug.cgi?id=32037 )
about 9% faster overall.
Differential Revision: https://reviews.llvm.org/D34174
llvm-svn: 305398
Many times unit tests for different libraries would like to use
the same helper functions for checking common types of errors.
This patch adds a common library with helpers for testing things
in Support, and introduces helpers in here for integrating the
llvm::Error and llvm::Expected<T> classes with gtest and gmock.
Normally, we would just be able to write:
EXPECT_THAT(someFunction(), succeeded());
but due to some quirks in llvm::Error's move semantics, gmock
doesn't make this easy, so two macros EXPECT_THAT_ERROR() and
EXPECT_THAT_EXPECTED() are introduced to gloss over the difficulties.
Consider this an exception, and possibly only temporary as we
look for ways to improve this.
Differential Revision: https://reviews.llvm.org/D33059
llvm-svn: 305395
Newlib 2.5 added the locale management functions, so it should not
include __nop_local_mgmt.h. This change adds proper guard around that
include statement.
For newlib 2.4, some releases contain these functions and some don't,
and they all have the same version numbers. This patch will work
properly with the initial "2.4.0" release which does not include these
functions and require __nop_local_mgmt.h.
This has been tested against newlib 2.2 and 2.5, and also sanity
checks against other different version numbers.
Patch by Martin J. O'Riordan and Walter Lee
Differential Revision: https://reviews.llvm.org/D32146
llvm-svn: 305394
This was originally reverted because of some non-deterministic
failures on certain buildbots. Luckily ASAN eventually caught
this as a stack-use-after-scope, so the fix is included in
this patch.
llvm-svn: 305393
Summary:
It seems -flto must be either "thin" or "full". I think the use of
containValue is just a typo.
Reviewers: ruiu, tejohnson
Subscribers: mehdi_amini, inglorion
Differential Revision: https://reviews.llvm.org/D34055
llvm-svn: 305392
Summary:
The reasoning behind this change is explained in D33454, which unfortunately
broke the Windows version (due to the platform not supporting partial unmapping
of a memory region).
This new approach changes `MmapAlignedOrDie` to allow for the specification of
a `padding_chunk`. If non-null, and the initial allocation is aligned, this
padding chunk will hold the address of the extra memory (of `alignment` bytes).
This allows `AllocateRegion` to get 2 regions if the memory is aligned
properly, and thus help reduce fragmentation (and saves on unmapping
operations). As with the initial D33454, we use a stash in the 32-bit Primary
to hold those extra regions and return them on the fast-path.
The Windows version of `MmapAlignedOrDie` will always return a 0
`padding_chunk` if one was requested.
Reviewers: alekseyshl, dvyukov, kcc
Reviewed By: alekseyshl
Subscribers: llvm-commits, kubamracek
Differential Revision: https://reviews.llvm.org/D34152
llvm-svn: 305391
This reverts commit 3a204faa093c681a1e96c5e0622f50649b761ee0.
I've upset a buildbot which runs the address sanitizer:
ERROR: AddressSanitizer: stack-use-after-scope
lib/Target/ARM/ARMISelLowering.cpp:2690
That Twine variable is used illegally.
llvm-svn: 305390
For multiprecision arithmetic on MIPS, rather than using ISD::ADDE / ISD::ADDC,
get SelectionDAG to break down the operation into ISD::ADDs and ISD::SETCCs.
For MIPS, only the DSP ASE has a carry flag, so in the general case it is not
useful to directly support ISD::{ADDE, ADDC, SUBE, SUBC} nodes.
Also improve the generation code in such cases for targets with
TargetLoweringBase::ZeroOrOneBooleanContent by directly using the result of the
comparison node rather than using it in selects. Similarly for ISD::SUBE /
ISD::SUBC.
Address optimization breakage by moving the generation of MIPS specific integer
multiply-accumulate nodes to before legalization.
This revolves PR32713 and PR33424.
Thanks to Simonas Kazlauskas and Pirama Arumuga Nainar for reporting the issue!
Reviewers: slthakur
Differential Revision: https://reviews.llvm.org/D33494
llvm-svn: 305389
The ARM backend asserts against constant pool lowering when it generates
execute-only code in order to prevent the generation of constant pools in
the text section. It appears that target independent optimizations might
generate DAG nodes that represent constant pools. By lowering such nodes
as global addresses we don't violate the semantics of execute-only code
and also it is guaranteed that execute-only behaves correct with the
position-independent addressing modes that support execute-only code.
Differential Revision: https://reviews.llvm.org/D33773
llvm-svn: 305387
Eric Fiselier