The exisiting code goes out of its way to put block parameters into an
alloca only at -O0, and then describes the funciton argument with a
dbg.declare, which is undocumented in the LLVM-CFE contract and does
not actually behave as intended after LLVM r642022.
This patch just generates the alloca unconditionally, the mem2reg pass
will eliminate it at -O1 and up anyway and points the dbg.declare to
the alloca as intended (which mem2reg will then correctly rewrite into
a dbg.value).
This reapplies r316684 with some dead code removed.
rdar://problem/35043980
Differential Revision: https://reviews.llvm.org/D39305
llvm-svn: 316689
The exisiting code goes out of its way to put block parameters into an
alloca only at -O0, and then describes the funciton argument with a
dbg.declare, which is undocumented in the LLVM-CFE contract and does
not actually behave as intended after LLVM r642022.
This patch just generates the alloca unconditionally, the mem2reg pass
will eliminate it at -O1 and up anyway and points the dbg.declare to
the alloca as intended (which mem2reg will then correctly rewrite into
a dbg.value).
rdar://problem/35043980
Differential Revision: https://reviews.llvm.org/D39305
llvm-svn: 316684
Summary:
The warning was initially introduced in D32914 by @thakis,
and the concerns were raised there, and later in rL302247
and PR33771.
I do believe that it makes sense to relax the diagnostic
e.g. in this case, when the expression originates from the
system header, which can not be modified. This prevents
adoption for the diagnostic for codebases which use pthreads
(`PTHREAD_MUTEX_INITIALIZER`), gtest, etc.
As @malcolm.parsons suggests, it *may* make sense to also
not warn for the template types, but it is not obvious to
me how to do that in here.
Though, it still makes sense to complain about `NULL` macro.
While there, add more tests.
Reviewers: dblaikie, thakis, rsmith, rjmccall, aaron.ballman
Reviewed By: thakis
Subscribers: Rakete1111, hans, cfe-commits, thakis, malcolm.parsons
Tags: #clang
Differential Revision: https://reviews.llvm.org/D38954
llvm-svn: 316662
Changes all existing attributes that currently use GNU<"attr"> and CXX11<"clang", "attr> spellings to instead use the Clang<"attr"> spelling.
No additional tests are necessary because the existing tests already use both spellings for the attributes converted to the new spelling. No functional changes are expected.
llvm-svn: 316658
Summary:
This defines a `clang::tooling::ToolExecutor` interface that can be extended to support different execution plans including standalone execution on a given set of TUs or parallel execution on all TUs in a codebase.
In order to enable multiprocessing execution, tool actions are expected to output result into a `ToolResults` interface provided by executors. The `ToolResults` interface abstracts how results are stored e.g. in-memory for standalone executions or on-disk for large-scale execution.
New executors can be registered as `ToolExecutorPlugin`s via the `ToolExecutorPluginRegistry`. CLI tools can use `createExecutorFromCommandLineArgs` to create a specific registered executor according to the command-line arguments.
This patch also implements `StandaloneToolExecutor` which has the same behavior as the current `ClangTool` interface, i.e. execute frontend actions on a given set of TUs. At this point, it's simply a wrapper around `ClangTool` at this point.
This is still experimental but expected to replace the existing `ClangTool` interface so that specific tools would not need to worry about execution.
Reviewers: klimek, arphaman, hokein, sammccall
Reviewed By: klimek
Subscribers: cfe-commits, djasper, mgorny, omtcyfz
Differential Revision: https://reviews.llvm.org/D34272
llvm-svn: 316653
https://bugs.llvm.org/show_bug.cgi?id=33904
Happens when static function is accessed via the class variable. That leads to incorrect overloads number because the variable is considered as the first argument.
struct Bar {
static void foo(); static void foo(int);
};
int main() {
Bar b;
b.foo(/*complete here*/); // did not work before
Bar::foo(/*complete here*/); // worked fine
}
Patch by Ivan Donchevskii!
Differential Revision: https://reviews.llvm.org/D36390
llvm-svn: 316646
Contrary to the deleted comment, in most cases CmpRuns.py produces a
fairly small amount of output, which is useful to see straight away to
see what has changed when executing the integration tests.
llvm-svn: 316618
Summary:
CUDA 9's minimum sm is sm_30.
Ideally we should also make sm_30 the default when compiling with CUDA
9, but that seems harder than it should be.
Subscribers: sanjoy
Differential Revision: https://reviews.llvm.org/D39109
llvm-svn: 316611
Summary:
Also enable -no-pie on Gnu toolchain (previously available on Darwin only).
Non-PIE executables won't even start on recent Android, and DT_RPATH is ignored by the loader.
Reviewers: srhines, danalbert
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D38430
llvm-svn: 316606
Darwin uses char * for the variadic list type (va_list). We use the PPC
SVR4 ABI for PPC, which uses a structure type for the va_list. When
constructing the GEP, we would fail due to the incorrect handling for
the va_list. Correct this to use the right type.
llvm-svn: 316599
As indicated by Table 1-1 in Intel Architecture Instruction Set Extensions and Future Features Programming Reference from October 2017.
llvm-svn: 316593
Ensure that we check the ivar containing decl for the DLL storage
attribute rather than the ivar itself as the dll storage is associated
to the interface decl not the ivar decl.
llvm-svn: 316545
This is nedeeded for the toolchain to be actually usable as a host
toolchain on Darwin.
Differential Revision: https://reviews.llvm.org/D39273
llvm-svn: 316542
This allows including clang-refactor in LLVM_DISTRIBUTION_COMPONENTS
to build clang-refactor as part of the toolchain distribution.
Differential Revision: https://reviews.llvm.org/D39266
llvm-svn: 316540
Pointer to HTML diagnostics is removed (as it is not stored) as well as
the version (as it would be available from the commit message).
llvm-svn: 316534
determining whether a RecordDecl is CFError.
CFErrorRef used to be declared with "objc_bridge(NSError)" but is now
declared with "objc_bridge_mutable(NSError)". Look for either when
checking whether a RecordDecl is CFError.
rdar://problem/35034779
llvm-svn: 316531
Fastcall doesn't support variadic function calls, so
setting the default calling convention to Fastcall would
result in incorrect code being emitted for these conditions.
This patch adds a 'variadic' test to the default calling conv
test, as well as fixes the behavior of fastcall.
llvm-svn: 316528
rL316268 / D39122 has fixed PR35009, and now when in C,
these three(?) diagnostics properly use the enum's underlying
datatype.
While it was fixed, the test coverage was clearly insufficient,
because the -Wsign-compare change didn't show up in any of the
tests, until it was reported in the post-commit mail for rL316268.
So add the test for the -Wsign-compare diagnostic for enum
for C code, and while there, document this in the release notes.
The fix itself was obviously correct, so unless we want to silence
this new diagnosed case, i deem this commit to be NFC.
llvm-svn: 316500
Builder save/restores insertion pointer when emitting addr space cast
for alloca, but does not save/restore debug loc, which causes verifier
failure for certain call instructions.
This patch fixes that.
Differential Revision: https://reviews.llvm.org/D39069
llvm-svn: 316484
This commit adds an initial, skeleton outline of the "extract function"
refactoring. The extracted function doesn't capture variables / rewrite code
yet, it just basically does a simple copy-paste.
The following initiation rules are specified:
- extraction can only be done for executable code in a function/method/block.
This means that you can't extract a global variable initialize into a function
right now.
- simple literals and references are not extractable.
This commit also adds support for full source ranges to clang-refactor's test
mode.
Differential Revision: https://reviews.llvm.org/D38982
llvm-svn: 316465
With enabled CINDEXTEST_CODE_COMPLETE_PATTERNS env option (which enables
IncludeCodePatterns in completion options) code completion after colon
currently suggests access modifiers with 2 completion chunks which is
incorrect.
Example:
class A : <Cursor>B
{
}
Currently we get 'NotImplemented:{TypedText public}{Colon :} (40)'
but the correct line is just 'NotImplemented:{TypedText public} (40)'
The fix introduces more specific scope that occurs between ':' and '{'
It allows us to determine when we don't need to add ':' as a second
chunk to the public/protected/private access modifiers.
Patch by Ivan Donchevskii!
Differential Revision: https://reviews.llvm.org/D38618
llvm-svn: 316436
Summary: This returns error instead of exiting the program in case of error.
Reviewers: klimek, hokein
Reviewed By: hokein
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D39042
llvm-svn: 316433
When -mtune is used on AArch64 the -target-cpu is passed the value of the
cpu given to -mtune. As well as setting micro-architectural features of the
-mtune cpu, this will also add the architectural features such as support
for instructions. This can result in the backend using instructions that
are supported in the -mtune cpu but not supported in the target
architecture. For example use of the v8.1-a LSE extensions with -march=v8.
This change removes the setting of -target-cpu for -mtune, the -mcpu must
be used to set -target-cpu. This has the effect of removing all non-hard
coded benefits of mtune but it does produce correct output when -mtune cpu
with a later architecture than v8 is used.
Fixes PR34625
Differential Revision: https://reviews.llvm.org/D39179
llvm-svn: 316424
Lit tries to inject the shared library paths, but no action is taken
when platform.system() is not recognized, results in an environment
variable with an empty name, which is illegal.
The patch fixes this mechanism for FreeBSD and NetBSD, and gives an
warning on other platforms, so that the latecomers don't have to spend
time on debugging lit.
Thanks Zhihao Yuan for the patch!
Differential Revision: https://reviews.llvm.org/D39162
llvm-svn: 316411
C++14 [dcl.constexpr]p4 states that in the body of a constexpr
constructor,
> every non-variant non-static data member and base class sub-object
shall be initialized
However, [class.bit]p2 notes that
> Unnamed bit-fields are not members and cannot be initialized.
Therefore, we should make sure to filter them out of the check that
all fields are initialized.
Fixing this makes the constant evaluator a bit smarter, and
specifically allows constexpr constructors to avoid tripping
-Wglobal-constructors when the type contains unnamed bitfields.
Reviewed at https://reviews.llvm.org/D39035.
llvm-svn: 316408
This bug was found via self-build on lld, and worked around
here: https://reviews.llvm.org/rL316180
The issue is that the 'using' causes the lookup to pick up the
first decl. However, when setting inherited default parameters,
we only update 'forward', not 'backward'. SO, only the newest param
list has all the information about the default arguments.
This patch ensures that the list of parameters we look through checks
the newest decl's template parameter list so it doesn't miss a default.
Differential Revision: https://reviews.llvm.org/D39127
llvm-svn: 316405
In getLValueElement Base may represent the address of a label
(as in the newly-added test case), in this case it's not a loc::MemRegionVal
and Base.castAs<loc::MemRegionVal>() triggers an assert, this diff makes
getLValueElement return UnknownVal instead.
Differential revision: https://reviews.llvm.org/D39174
llvm-svn: 316399
Allow Obj-C ivars with incomplete array type but only as the last ivar.
Also add a requirement for ivars that contain a flexible array member to
be at the end of class too. It is possible to add in a subclass another
ivar at the end but we'll emit a warning in this case. Also we'll emit a
warning if a variable sized ivar is declared in class extension or in
implementation because subclasses won't know they should avoid adding
new ivars.
In ARC incomplete array objects are treated as __unsafe_unretained so
require them to be marked as such.
Prohibit synthesizing ivars with flexible array members because order of
synthesized ivars is not obvious and tricky to control. Spelling out
ivar explicitly gives control to developers and helps to avoid surprises
with unexpected ivar ordering.
For C and C++ changed diagnostic to tell explicitly a field is not the
last one and point to the next field. It is not as useful as in Obj-C
but it is an improvement and it is consistent with Obj-C. For C for
unions emit more specific err_flexible_array_union instead of generic
err_field_incomplete.
rdar://problem/21054495
Reviewers: rjmccall, theraven
Reviewed By: rjmccall
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D38773
llvm-svn: 316381
Passing a flavor to LLD requires command line argument, but if these
are being passed through a response file, this will fail because LLD
needs to know which driver to use before processing the response file.
Use ld.lld directly instead to avoid this issue.
Differential Revision: https://reviews.llvm.org/D39176
llvm-svn: 316379
In some cases the compiler can deduce the length of an array section
as constants. With this information, VLAs can be avoided in place of
a constant sized array or even a scalar value if the length is 1.
Example:
int a[4], b[2];
pragma omp parallel reduction(+: a[1:2], b[1:1])
{ }
For chained array sections, this optimization is restricted to cases
where all array sections except the last have a constant length 1.
This trivially guarantees that there are no holes in the memory region
that needs to be privatized.
Example:
int c[3][4];
pragma omp parallel reduction(+: c[1:1][1:2])
{ }
This relands commit r316229 that I reverted in r316235 because it
failed on some bots. During investigation I found that this was because
Clang and GCC evaluate the two arguments to emplace_back() in
ReductionCodeGen::emitSharedLValue() in a different order, hence
leading to a different order of generated instructions in the final
LLVM IR. Fix this by passing in the arguments from temporary variables
that are evaluated in a defined order.
Differential Revision: https://reviews.llvm.org/D39136
llvm-svn: 316362
This is for consistency with lld-link, see https://reviews.llvm.org/D38972
Also give --version a help text so it shows up in --help / /? output (for
both clang-cl and regular clang).
llvm-svn: 316335
In order to identify the copy deduction candidate, I considered two approaches:
- attempt to determine whether an implicit guide is a copy deduction candidate by checking certain properties of its subsituted parameter during overload-resolution.
- using one of the many bits (WillHaveBody) from FunctionDecl (that CXXDeductionGuideDecl inherits from) that are otherwise irrelevant for deduction guides
After some brittle gymnastics w the first strategy, I settled on the second, although to avoid confusion and to give that bit a better name, i turned it into a member of an anonymous union.
Given this identification 'bit', the tweak to overload resolution was a simple reordering of the deduction guide checks (in SemaOverload.cpp::isBetterOverloadCandidate), in-line with Jason Merrill's p0620r0 drafting which made it into the working paper. Concordant with that, I made sure the copy deduction candidate is always added.
References:
See https://bugs.llvm.org/show_bug.cgi?id=34970
See http://wg21.link/p0620r0
llvm-svn: 316292
o) Add a 'Location' class that represents the four properties of a
physical location
o) Enhance 'SourceLocation' to provide 'expansion' and 'spelling'
locations, maintaining backwards compatibility with existing code by
forwarding the four properties to 'expansion'.
o) Update the implementation to use 'clang_getExpansionLocation'
instead of the deprecated 'clang_getInstantiationLocation', which
has been present since 2011.
o) Update the implementation of 'clang_getSpellingLocation' to actually
obtain spelling location instead of file location.
llvm-svn: 316278
Summary:
As Mattias Eriksson has reported in PR35009, in C, for enums, the underlying type should
be used when checking for the tautological comparison, unlike C++, where the enumerator
values define the value range. So if not in CPlusPlus mode, use the enum underlying type.
Also, i have discovered a problem (a crash) when evaluating tautological-ness of the following comparison:
```
enum A { A_a = 0 };
if (a < 0) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
return 0;
```
This affects both the C and C++, but after the first fix, only C++ code was affected.
That was also fixed, while preserving (i think?) the proper diagnostic output.
And while there, attempt to enhance the test coverage.
Yes, some tests got moved around, sorry about that :)
Fixes PR35009
Reviewers: aaron.ballman, rsmith, rjmccall
Reviewed By: aaron.ballman
Subscribers: Rakete1111, efriedma, materi, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D39122
llvm-svn: 316268
Some API calls accept 'NULL' instead of a char array (e.g. the second
argument to 'clang_ParseTranslationUnit'). For Python 3 compatibility,
all strings are passed through 'c_interop_string' which expects to
receive only 'bytes' or 'str' objects. This change extends this
behavior to additionally allow 'None' to be supplied.
A test case was added which breaks in Python 3, and is fixed by this
change. All the test cases pass in both, Python 2 and Python 3.
llvm-svn: 316264
constant expressions.
We permit array-to-pointer decay on such arrays, but disallow pointer
arithmetic (since we do not know whether it will have defined behavior).
This is based on r311970 and r301822 (the former by me and the latter by Robert
Haberlach). Between then and now, two things have changed: we have committee
feedback indicating that this is indeed the right direction, and the code
broken by this change has been fixed.
This is necessary in C++17 to continue accepting certain forms of non-type
template argument involving arrays of unknown bound.
llvm-svn: 316245
In some cases the compiler can deduce the length of an array section
as constants. With this information, VLAs can be avoided in place of
a constant sized array or even a scalar value if the length is 1.
Example:
int a[4], b[2];
pragma omp parallel reduction(+: a[1:2], b[1:1])
{ }
For chained array sections, this optimization is restricted to cases
where all array sections except the last have a constant length 1.
This trivially guarantees that there are no holes in the memory region
that needs to be privatized.
Example:
int c[3][4];
pragma omp parallel reduction(+: c[1:1][1:2])
{ }
Differential Revision: https://reviews.llvm.org/D39136
llvm-svn: 316229
Summary:
Change clang-refactor default behavior to print the new code after refactoring
(instead of editing the source files), which would make it easier to use
and debug the refactoring action.
Reviewers: arphaman, ioeric
Reviewed By: arphaman
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D39092
llvm-svn: 316212
NetBSD uses `long int` for `intptr_t` on ARM. This was changed in SVN
r316046, referenced against other compilers. However, NetBSD's
reference was incorrect as the current clang behaviour is more
up-to-date. Restore the original behaviour for that target.
llvm-svn: 316204
GCC tries to shorten system headers in depfiles using its real path
(resolving components like ".." and following symlinks). Mimic this
feature to ensure that the Ninja build tool detects the correct
dependencies when a symlink changes directory levels, see
https://github.com/ninja-build/ninja/issues/1330
An option to disable this feature is added in case "these changed header
paths may conflict with some compilation environments", see
https://gcc.gnu.org/ml/gcc-patches/2012-09/msg00287.html
Note that the original feature request for GCC
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52974) also included paths
preprocessed output (-E) and diagnostics. That is not implemented now
since I am not sure if it breaks something else.
Differential Revision: https://reviews.llvm.org/D37954
llvm-svn: 316193
In function GetIntrinsic, not all types are covered. Types double and long long are missed, type long is wrongly treated same as int, it should be same as long long. These problems cause compiler crashes when compiling code in PR31161. This patch fixed the problem.
Differential Revision: https://reviews.llvm.org/D38820
llvm-svn: 316179
instantiation declarations if they are usable from constant expressions.
We are permitted to instantiate in these cases, and required to do so in order
to have an initializer available for use within constant evaluation.
llvm-svn: 316136
Summary:
This patch enables sorting the full block of using declarations when
some line is affected.
Reviewers: djasper
Reviewed By: djasper
Subscribers: cfe-commits, klimek
Differential Revision: https://reviews.llvm.org/D39024
llvm-svn: 316130
consecutive statements
This commit adds a CodeRangeASTSelection value to the refactoring library. This
value represents a set of selected statements in one body of code.
Differential Revision: https://reviews.llvm.org/D38835
llvm-svn: 316104
This patch has the following changes
A new flag "-mhvx-length={64B|128B}" is introduced to specify the length of the vector.
Previously we have used "-mhvx-double" for 128 Bytes. This adds the target-feature "+hvx-length{64|128}b"
The "-mhvx" flag must be provided on command line to enable HVX for Hexagon. If no -mhvx-length flag
is specified, a default length is picked from the arch mentioned in this priority order from either -mhvx=vxx
or -mcpu. For v60 and v62 the default length is 64 Byte. For unknown versions, the length is 128 Byte. The
-mhvx flag adds the target-feature "+hvxv{hvx_version}"
The 64 Byte mode is soon going to be deprecated. A warning is emitted if 64 Byte is enabled. A warning is
still emitted for the default 64 Byte as well. This warning can be suppressed with a -Wno flag.
The "-mhvx-double" and "-mno-hvx-double" flags are deprecated. A warning is emitted if the driver sees
them on commandline. "-mhvx-double" is an alias to "-mhvx-length=128B"
The compilation will error out if -mhvx-length is specified with out an -mhvx/-mhvx= flag
The macro HVX_LENGTH is defined and is set to the length of the vector.
Eg: #define HVX_LENGTH 64
The macro HVX_ARCH is defined and is set to the version of the HVX.
Eg: #define HVX_ARCH 62
Differential Revision: https://reviews.llvm.org/D38852
llvm-svn: 316102
Summary:
* Support rename alias.
* Add unittests for renaming alias.
* Don't generate fixes for the SourceLocations that are invalid or in temporary
buffer, otherwise crash would be happened when generating AtomicChanges.
Reviewers: ioeric
Reviewed By: ioeric
Subscribers: klimek, mgorny, cfe-commits
Differential Revision: https://reviews.llvm.org/D39043
llvm-svn: 316074
It'd be better that they are #cmakedefine01 rather than #cmakedefine.
(#if FOO rather than #if defined(FOO))
Then we can find missing #include "clang/Config/config.h" in the future.
Differential Revision: https://reviews.llvm.org/D35541
llvm-svn: 316061
Darwin and OpenBSD are the only platforms which use `long int` for
`__INTPTR_TYPE__`. The other platforms use `int` in 32-bit, and `long
int` on 64-bit (except for VMS and Windows which are LLP64). Adjust the
type definitions to match the platform definitions. We now generate the
same definition as GCC on all the targets.
llvm-svn: 316046
Remove an option to use a reference type (on by default!) since a
non-reference type is always needed for creating expressions, functions
with multiple boolean parameters are very hard to use, and in general it
was just a booby trap for further crashes.
Furthermore, generalize call_once test case to fix some of the crashes mentioned
https://bugs.llvm.org/show_bug.cgi?id=34869
Also removes std::call_once crash.
Differential Revision: https://reviews.llvm.org/D39015
llvm-svn: 316041
Changes behavior introduced in r298369 to only error out on
vector component invalid length access on OpenCL mode.
Differential Revision: https://reviews.llvm.org/D38868
rdar://problem/33568748
llvm-svn: 316016
I ran across an instance where the value was being loaded
out via back, then immediately popped. Since pop_back_val
is more efficient at this (it moves out), replace this
instance.
llvm-svn: 316015
Use the new helper methods to get the underlying type for NSUInteger,
NSInteger types. This avoids spreading the knowledge of the underlying
types in various sites. For non-LLP64 targets, this has no change.
llvm-svn: 316013
If the variables is boolean and we generating inner function with real
types, the codegen may crash because of not loading boolean value from
memory.
llvm-svn: 316011
Currently clang assumes the temporary variables emitted during
codegen of atomic builtins have address space 0, which
is not true for target triple amdgcn---amdgiz and causes invalid
bitcasts.
This patch fixes that.
Differential Revision: https://reviews.llvm.org/D38966
llvm-svn: 316000
For the shuffle instructions in reductions we need at least sm_30
but the user may want to customize the default architecture.
Differential Revision: https://reviews.llvm.org/D38883
llvm-svn: 315996
The main change is that now we generate TBAA info before
constructing the resulting lvalue instead of constructing lvalue
with some default TBAA info and fixing it as necessary
afterwards. We also keep the TBAA info close to lvalue base info,
which is supposed to simplify their future merging.
This patch should not bring in any functional changes.
This is part of D38126 reworked to be a separate patch to
simplify review.
Differential Revision: https://reviews.llvm.org/D38947
llvm-svn: 315989
This patch addresses the rest of the cases where we pass lvalue
base info, but do not provide corresponding TBAA info.
This patch should not bring in any functional changes.
This is part of D38126 reworked to be a separate patch to make
reviewing easier.
Differential Revision: https://reviews.llvm.org/D38945
llvm-svn: 315986
A trailing deferred region isn't necessary in a function that ends with
this pattern:
...
else {
...
return;
}
Special-case this pattern so that the closing curly brace of the
function isn't marked as uncovered. This issue came up in PR34962.
llvm-svn: 315982
This makes it possible to view sub-line region counts for the l.h.s of
&& and || expressions in coverage reports.
It also fixes PR33465, which shows an example of incorrect coverage
output for an assignment statement containing '||'.
llvm-svn: 315979
The nan family of math routines do not rely on global state. They do
however depend on their parameter. This fits the description of pure:
Functions which have no effects except the return value and their
return value depends only on the parameters and/or global variables.
Mark the family as `readonly`.
llvm-svn: 315968
Summary:
This patch allows checking the availability of cursors through libclang and clang.cindex (Python).
This e.g. allows to check whether a C++ member function has been marked as deleted.
Reviewers: arphaman, jbcoe
Reviewed By: jbcoe
Subscribers: cfe-commits
Tags: #clang
Patch by jklaehn (Johann Klähn)
Differential Revision: https://reviews.llvm.org/D36973
llvm-svn: 315959
Summary: Previously, `VisitAttributes` was not called for function and class templates and thus their attributes were not accessible using libclang.
Reviewers: bkramer, arphaman, rsmith, jbcoe
Reviewed By: jbcoe
Subscribers: cfe-commits
Tags: #clang
Patch by jklaehn (Johann Klähn)
Differential Revision: https://reviews.llvm.org/D36955
llvm-svn: 315958
Record::getValueAsString returns a stringref to an interned
string (apparently had been changed since most of tablegen was
written). In this patch, I audited the usage of getValueAsString
to find places where we can trivially stop storing 'std::string' and instead
keep the stringref.
There was one instance where an unnecessary 'stringstream' was being used,
so that has been removed as well to unblock the stringref replacing string fix.
Differential Revision: https://reviews.llvm.org/D38979
llvm-svn: 315956
This comes up when pre-processing standalone .s files containing
hash-prefixed comments. The pre-processor should skip the unknown
directive and not emit an extra newline as we were doing.
Fixes PR34950
llvm-svn: 315953
GCC ignore qualifiers on array types. Since we seem to have this
function primarily for GCC compatibility, we should try to match that
behavior.
This also adds a few more test-cases __builtin_types_compatible_p,
which were inspired by GCC's documentation on the builtin.
llvm-svn: 315951
Typically we don't use the stringstream, so instead use
raw_string_stream. Additionally, the dependent function
changed to use raw_ostream.
llvm-svn: 315950
This documentation was copied directly from the GCC
documentaiton in r257867. Reverting and alterting
the original author so that it can be rewritten in
copyright-safe language.
llvm-svn: 315934
Attributes in the docs were previously sorted (apparently)
by the attribute name, so AnyX86Interrupt ended up being the
first one, rather than in a meaningful place. This resulted in the
4 'interrupt' titled sections being all in different places.
This replaces it with a naive alphabetical sort (case sensitive, underscore
and special characters first, etc).
Differential Revision: https://reviews.llvm.org/D38969
llvm-svn: 315931
This commit allows the refactoring library to use its own set of
refactoring-specific diagnostics to reports things like initiation errors.
Differential Revision: https://reviews.llvm.org/D38772
llvm-svn: 315924
Summary:
The OS provides cross-dso CFI support starting with Android O.
Trapping mode does not require any runtime at all, and diagnostic mode
requires just ubsan-standalone.
Reviewers: pcc
Subscribers: srhines, cfe-commits
Differential Revision: https://reviews.llvm.org/D38908
llvm-svn: 315921
The fixed commit ensures that ParsedSourceRange works correctly
with Windows paths.
Original message:
This commit actually brings clang-refactor to a usable state as it can now
apply the refactoring changes to source files.
The -selection option is now also fully supported.
Differential Revision: https://reviews.llvm.org/D38402
llvm-svn: 315918
Currently all the consecutive bitfields are wrapped as a large integer unless there is unamed zero sized bitfield in between. The patch provides an alternative manner which makes the bitfield to be accessed as separate memory location if it has legal integer width and is naturally aligned. Such separate bitfield may split the original consecutive bitfields into subgroups of consecutive bitfields, and each subgroup will be wrapped as an integer. Now This is all controlled by an option -ffine-grained-bitfield-accesses. The alternative of bitfield access manner can improve the access efficiency of those bitfields with legal width and being aligned, but may reduce the chance of load/store combining of other bitfields, so it depends on how the bitfields are defined and actually accessed to choose when to use the option. For now the option is off by default.
Differential revision: https://reviews.llvm.org/D36562
llvm-svn: 315915
If the user passes -nocudalib, we can live without it being present.
Simplify the code by just checking whether LibDeviceMap is empty.
Differential Revision: https://reviews.llvm.org/D38901
llvm-svn: 315902
Summary:
Also contain a fix:
* Fix a false positive of renaming a using shadow function declaration.
Reviewers: ioeric
Reviewed By: ioeric
Subscribers: klimek, mgorny, cfe-commits
Differential Revision: https://reviews.llvm.org/D38882
llvm-svn: 315898
Summary:
This patch enables `BreakableToken` to manage the formatting of non-trailing
block comments. It is a refinement of https://reviews.llvm.org/D37007.
We discovered that the optimizer outsmarts us on cases where breaking the comment
costs considerably less than breaking after the comment. This patch addresses
this by ensuring that a newline is inserted between a block comment and the next
token.
Reviewers: djasper
Reviewed By: djasper
Subscribers: cfe-commits, klimek
Differential Revision: https://reviews.llvm.org/D37695
llvm-svn: 315893
The first attempt, rL315614 was reverted because one libcxx
test broke, and i did not know at the time how to deal with it.
Summary:
Currently, clang only diagnoses completely out-of-range comparisons (e.g. `char` and constant `300`),
and comparisons of unsigned and `0`. But gcc also does diagnose the comparisons with the
`std::numeric_limits<>::max()` / `std::numeric_limits<>::min()` so to speak
Finally Fixes https://bugs.llvm.org/show_bug.cgi?id=34147
Continuation of https://reviews.llvm.org/D37565
Reviewers: rjmccall, rsmith, aaron.ballman
Reviewed By: rsmith
Subscribers: rtrieu, jroelofs, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D38101
llvm-svn: 315875
Summary:
Convert clang::LangAS to a strongly typed enum
Currently both clang AST address spaces and target specific address spaces
are represented as unsigned which can lead to subtle errors if the wrong
type is passed. It is especially confusing in the CodeGen files as it is
not possible to see what kind of address space should be passed to a
function without looking at the implementation.
I originally made this change for our LLVM fork for the CHERI architecture
where we make extensive use of address spaces to differentiate between
capabilities and pointers. When merging the upstream changes I usually
run into some test failures or runtime crashes because the wrong kind of
address space is passed to a function. By converting the LangAS enum to a
C++11 we can catch these errors at compile time. Additionally, it is now
obvious from the function signature which kind of address space it expects.
I found the following errors while writing this patch:
- ItaniumRecordLayoutBuilder::LayoutField was passing a clang AST address
space to TargetInfo::getPointer{Width,Align}()
- TypePrinter::printAttributedAfter() prints the numeric value of the
clang AST address space instead of the target address space.
However, this code is not used so I kept the current behaviour
- initializeForBlockHeader() in CGBlocks.cpp was passing
LangAS::opencl_generic to TargetInfo::getPointer{Width,Align}()
- CodeGenFunction::EmitBlockLiteral() was passing a AST address space to
TargetInfo::getPointerWidth()
- CGOpenMPRuntimeNVPTX::translateParameter() passed a target address space
to Qualifiers::addAddressSpace()
- CGOpenMPRuntimeNVPTX::getParameterAddress() was using
llvm::Type::getPointerTo() with a AST address space
- clang_getAddressSpace() returns either a LangAS or a target address
space. As this is exposed to C I have kept the current behaviour and
added a comment stating that it is probably not correct.
Other than this the patch should not cause any functional changes.
Reviewers: yaxunl, pcc, bader
Reviewed By: yaxunl, bader
Subscribers: jlebar, jholewinski, nhaehnle, Anastasia, cfe-commits
Differential Revision: https://reviews.llvm.org/D38816
llvm-svn: 315871
When using lld on macOS the current level of detection between ld and
ld64 forces us to rename lld to ld.
For ELF targets we have the ld.lld alias so for MACHO we should have
ld64.lld so we can use lld without replacing the system compiler.
This also solves the additional issue of cross compiling for MACHO
where renaming lld to ld with only target ELF.
This is the clang driver component change to use this new alias.
Reviewers: ruiu, rnk
Differential Revision: https://reviews.llvm.org/D38290
llvm-svn: 315867
In passing also complete a comment that I left uncompleted.
For ease of reference, here's the parent commit: https://reviews.llvm.org/rL315840
llvm-svn: 315842
This patch implements an extension to the preprocessor:
__VA_OPT__(contents) --> which expands into its contents if variadic arguments are supplied to the parent macro, or behaves as an empty token if none.
- Currently this feature is only enabled for C++2a (this could be enabled, with some careful tweaks, for other dialects with the appropriate extension or compatibility warnings)
- The patch was reviewed here: https://reviews.llvm.org/D35782 and asides from the above (and moving some of the definition and expansion recognition logic into the corresponding state machines), I believe I incorporated all of Richard's suggestions.
A few technicalities (most of which were clarified through private correspondence between rsmith, hubert and thomas) are worth mentioning. Given:
#define F(a,...) a #__VA_OPT__(a ## a) a ## __VA_OPT__(__VA_ARGS__)
- The call F(,) Does not supply any tokens for the variadic arguments and hence VA_OPT behaves as a placeholder.
- When expanding VA_OPT (for e.g. F(,1) token pasting occurs eagerly within its contents if the contents need to be stringified.
- A hash or a hashhash prior to VA_OPT does not inhibit expansion of arguments if they are the first token within VA_OPT.
- When a variadic argument is supplied, argument substitution occurs within the contents as does stringification - and these resulting tokens are inserted back into the macro expansions token stream just prior to the entire stream being rescanned and concatenated.
See wg21.link/P0306 for further details on the feature.
Acknowledgment: This patch would have been poorer if not for Richard Smith's usual thoughtful analysis and feedback.
llvm-svn: 315840
In OpenCL the kernel function and non-kernel function has different calling conventions.
For certain targets they have different argument ABIs. Also kernels have special function
attributes and metadata for runtime to launch them.
The blocks passed to enqueue_kernel is supposed to be executed as kernels. As such,
the block invoke function should be emitted as kernel with proper calling convention and
argument ABI.
This patch emits enqueued block as kernel. If a block is both called directly and passed
to enqueue_kernel, separate functions will be generated.
Differential Revision: https://reviews.llvm.org/D38134
llvm-svn: 315804
If the variable construction can be constant evaluated it doesn't have
side effects, so removing it is always safe. We only try to evaluate
variables that are unused, there should be no impact on compile time.
Differential Revision: https://reviews.llvm.org/D38678
llvm-svn: 315787
The function sanitizer only checks indirect calls through function
pointers. This excludes all non-static member functions (constructor
calls, calls through thunks, etc. all use a separate code path). Don't
emit function signatures for functions that won't be checked.
Apart from cutting down on code size, this should fix a regression on
Linux caused by r313096. For context, see the mailing list discussion:
r313096 - [ubsan] Function Sanitizer: Don't require writable text segments
Testing: check-clang, check-ubsan
Differential Revision: https://reviews.llvm.org/D38913
llvm-svn: 315786
It's possible for the code completion consumer to add new decls to the
current scope while lookup happens on it. Avoid this by making a copy
first.
Sadly I wasn't able to get a self-contained test case for this as it
requires code completion + precompiled preamble + the stars aligning to
deserialize at exactly the right time.
llvm-svn: 315772
When LLVM_BUILD_EXTERNAL_COMPILER_RT option is set to true,
all of projects in compiler-rt are built with a freshly-built compiler using
a recursive CMake invocation.
(e.g. that's how compiler-rt is used in Swift)
Just now I have noticed that libFuzzer binaries were missing in such a case,
and ninja fuzzer returned "no such target", while ninja asan worked just fine.
To my surprise, the list of allowed targets was actually hardcoded in Clang!
While the current setup is clearly suboptimal, for the lack of a better fix
I'm just adding `fuzzer` to a list of `compiler-rt` targets.
Differential Revision: https://reviews.llvm.org/D38904
llvm-svn: 315771
In some cases the analyzer didn't expect an array-type variable to be
initialized with anything other than a string literal. The patch essentially
removes the assertion, and ensures relatively sane behavior.
There is a bigger problem with these initializers. Currently our memory model
(RegionStore) is being ordered to initialize the array with a region that
is assumed to be storing the initializer rvalue, and it guesses to copy
the contents of that region to the array variable. However, it would make
more sense for RegionStore to receive the correct initializer in the first
place. This problem isn't addressed with this patch.
rdar://problem/27248428
Differential Revision: https://reviews.llvm.org/D23963
llvm-svn: 315750
The checker used to crash when a mempcpy's length argument is symbolic. In this
case the cast from 'void *' to 'char *' failed because the respective
ElementRegion that represents cast is hard to add on top of the existing
ElementRegion that represents the offset to the last copied byte, while
preseving a sane memory region structure.
Additionally, a few test cases are added (to casts.c) which demonstrate problems
caused by existing sloppy work we do with multi-layer ElementRegions. If said
cast would be modeled properly in the future, these tests would need to be
taken into account.
Differential Revision: https://reviews.llvm.org/D38797
llvm-svn: 315742
The `nan` family of functions will inspect the contents of the parameter
that they are passed. As a result, the function cannot be annotated as
`const`. The documentation of the `const` attribute explicitly states
this:
Note that a function that has pointer arguments and examines the data
pointed to must not be declared const.
Adjust the annotations on this family of functions.
llvm-svn: 315741
This commit actually brings clang-refactor to a usable state as it can now
apply the refactoring changes to source files.
The -selection option is now also fully supported.
Differential Revision: https://reviews.llvm.org/D38402
llvm-svn: 315738
It is not uncommon for the users to make their own wrappers around
CoreFoundation's CFRetain and CFRelease functions that are defensive
against null references. In such cases CFRetain is often incorrectly
marked as CF_RETURNS_RETAINED. Ignore said annotation and treat such
wrappers similarly to the regular CFRetain.
rdar://problem/31699502
Differential Revision: https://reviews.llvm.org/D38877
llvm-svn: 315736
Adrian Prantl