Commit Graph

203601 Commits

Author SHA1 Message Date
Adrian McCarthy a59a7211f0 Load executable module when attaching to process; implement detach from process.
llvm-svn: 240157
2015-06-19 18:26:53 +00:00
Douglas Gregor 2a20bd1a94 Introduced pragmas for audited nullability regions.
Introduce the clang pragmas "assume_nonnull begin" and "assume_nonnull
end" in which we make default assumptions about the nullability of many
unannotated pointers:

  - Single-level pointers are inferred to __nonnull
  - NSError** in a (function or method) parameter list is inferred to
    NSError * __nullable * __nullable.
  - CFErrorRef * in a (function or method) parameter list is inferred
    to CFErrorRef __nullable * __nullable.
  - Other multi-level pointers are never inferred to anything.

Implements rdar://problem/19191042.

llvm-svn: 240156
2015-06-19 18:25:57 +00:00
Douglas Gregor 849ebc269f Implement the 'null_resettable' attribute for Objective-C properties.
'null_resettable' properties are those whose getters return nonnull
but whose setters take nil, to "reset" the property to some
default. Implements rdar://problem/19051334.

llvm-svn: 240155
2015-06-19 18:14:46 +00:00
Douglas Gregor 813a066f16 Extend type nullability qualifiers for Objective-C.
Introduce context-sensitive, non-underscored nullability specifiers
(nonnull, nullable, null_unspecified) for Objective-C method return
types, method parameter types, and properties.

Introduce Objective-C-specific semantics, including computation of the
nullability of the result of a message send, merging of nullability
information from the @interface of a class into its @implementation,
etc .

This is the Objective-C part of rdar://problem/18868820.

llvm-svn: 240154
2015-06-19 18:14:38 +00:00
Douglas Gregor b4866e85e5 Diagnose unsafe uses of nil and __nonnull pointers.
This generalizes the checking of null arguments to also work with
values of pointer-to-function, reference-to-function, and block
pointer type, using the nullability information within the underling
function prototype to extend non-null checking, and diagnoses returns
of 'nil' within a function with a __nonnull return type.

Note that we don't warn about nil returns from Objective-C methods,
because it's common for Objective-C methods to mimic the nil-swallowing
behavior of the receiver by checking ostensibly non-null parameters
and returning nil from otherwise non-null methods in that
case.

It also diagnoses (via a separate flag) conversions from nullable to
nonnull pointers. It's a separate flag because this warning can be noisy.

llvm-svn: 240153
2015-06-19 18:13:19 +00:00
Eric Christopher bb3a01cfaf Add a comment and FIXME based on the commit message that made the
intrinsic _mm_prefetch into a builtin rather than by textual inclusion
via the intrinsic headers.

llvm-svn: 240152
2015-06-19 18:09:33 +00:00
Matt Arsenault c0cdf3c9c4 AMDGPU: Fix filename in comment
llvm-svn: 240151
2015-06-19 17:56:51 +00:00
Matt Arsenault eccab74762 AMDGPU: Fix renamed file that was somehow dropped from last commit
llvm-svn: 240150
2015-06-19 17:55:06 +00:00
Rafael Espindola 63a88ce5d4 Make getRelocationSection MachO only.
There are 3 types of relocations on MachO
* Scattered
* Section based
* Symbol based

On ELF and COFF relocations are symbol based.

We were in the strange situation that we abstracted over two of them. This makes
section based relocations MachO only.

llvm-svn: 240149
2015-06-19 17:54:28 +00:00
Matt Arsenault 3ea39f9e78 AMDGPU: Fix places missed in rename
llvm-svn: 240148
2015-06-19 17:54:10 +00:00
Lang Hames b09c2c6edb [lld] Allow LLD passes to return error codes.
llvm-svn: 240147
2015-06-19 17:51:46 +00:00
Douglas Gregor 261a89b0f7 Introduce type nullability specifiers for C/C++.
Introduces the type specifiers __nonnull, __nullable, and
__null_unspecified that describe the nullability of the pointer type
to which the specifier appertains. Nullability type specifiers improve
on the existing nonnull attributes in a few ways:
  - They apply to types, so one can represent a pointer to a non-null
    pointer, use them in function pointer types, etc.
  - As type specifiers, they are syntactically more lightweight than
    __attribute__s or [[attribute]]s.
  - They can express both the notion of 'should never be null' and
  also 'it makes sense for this to be null', and therefore can more
  easily catch errors of omission where one forgot to annotate the
  nullability of a particular pointer (this will come in a subsequent
  patch).

Nullability type specifiers are maintained as type sugar, and
therefore have no effect on mangling, encoding, overloading,
etc. Nonetheless, they will be used for warnings about, e.g., passing
'null' to a method that does not accept it.

This is the C/C++ part of rdar://problem/18868820.

llvm-svn: 240146
2015-06-19 17:51:05 +00:00
Alex Lorenz 4f093bf1ce MIR Serialization: Serialize the list of machine basic blocks with simple attributes.
This commit implements the initial serialization of machine basic blocks in a
machine function. Only the simple, scalar MBB attributes are serialized. The 
reference to LLVM IR's basic block is preserved when that basic block has a name.

Reviewers: Duncan P. N. Exon Smith

Differential Revision: http://reviews.llvm.org/D10465

llvm-svn: 240145
2015-06-19 17:43:07 +00:00
Michael Zolotukhin 4d8ffa082c [SLP] Vectorize for all-constant entries.
Differential Revision: http://reviews.llvm.org/D10531

llvm-svn: 240144
2015-06-19 17:40:15 +00:00
Matt Arsenault 5eb5eb59fc AMDGPU: Fix some places missed in rename
llvm-svn: 240143
2015-06-19 17:39:03 +00:00
Alex Lorenz 85ee0cebf5 MIR Serialization: use default member initializers to initialize yaml::MachineFunction. NFC.
Default member initializers are permitted since r236244.

llvm-svn: 240142
2015-06-19 17:36:02 +00:00
Chad Rosier 38c6ad2deb Typo. NFC.
llvm-svn: 240141
2015-06-19 17:32:57 +00:00
Douglas Katzman f3a3b5d6e0 Avoid warning about inability to cast from ptr-to-obj to ptr-to-fun.
Use POSIX.1-2003 Technical Corrigendum 1 suggested workaround.

llvm-svn: 240140
2015-06-19 17:21:02 +00:00
Marshall Clow 79336aa3a4 Fix ASAN bot; missing bookkeeping in r240136.
llvm-svn: 240139
2015-06-19 17:13:59 +00:00
Rafael Espindola 86f422e1aa Fix the lldb build for the EM_486 change.
llvm-svn: 240138
2015-06-19 17:02:25 +00:00
Alexander Kornienko 70bc5f1398 Fixed/added namespace ending comments using clang-tidy. NFC
The patch is generated using this command:

tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
  -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \
  llvm/lib/


Thanks to Eugene Kosov for the original patch!

llvm-svn: 240137
2015-06-19 15:57:42 +00:00
Marshall Clow 55112defb0 Fix PR#18843. Thanks to Howard for the fix
llvm-svn: 240136
2015-06-19 15:54:13 +00:00
Douglas Katzman b6c13ff689 Fix typo in comment.
llvm-svn: 240135
2015-06-19 15:40:00 +00:00
Douglas Katzman 84a7564b28 Add nominal support for 'shave' target.
This change passes through C and assembler jobs to Movidius tools by
constructing commands which are the same as ones produces by the examples
in the SDK. But rather than reference MV_TOOLS_DIR to find tools,
we will assume that binaries are installed wherever the Driver would
find its native tools. Similarly, this change assumes that -I options
will "just work" based on where SDK headers get installed, rather than
baking into the Driver some magic paths.

Differential Revision: http://reviews.llvm.org/D10440

llvm-svn: 240134
2015-06-19 14:55:19 +00:00
Rafael Espindola 9fed250566 Fix the build.
Sorry, I have no idea how grep failed to find this.

llvm-svn: 240133
2015-06-19 14:34:12 +00:00
Rafael Espindola 4f13fc4698 Replace EM_486 with EM_IAMCU.
This matches the current
http://www.sco.com/developers/gabi/latest/ch4.eheader.html#machine

llvm-svn: 240132
2015-06-19 14:22:16 +00:00
Alexander Potapenko b9b73ef906 [ASan] Initial support for Kernel AddressSanitizer
This patch adds initial support for the -fsanitize=kernel-address flag to Clang.
Right now it's quite restricted: only out-of-line instrumentation is supported, globals are not instrumented, some GCC kasan flags are not supported.
Using this patch I am able to build and boot the KASan tree with LLVMLinux patches from github.com/ramosian-glider/kasan/tree/kasan_llvmlinux.
To disable KASan instrumentation for a certain function attribute((no_sanitize("kernel-address"))) can be used.

llvm-svn: 240131
2015-06-19 12:19:07 +00:00
Rafael Espindola 284a750c5f Make all temporary symbols unnamed.
What this does is make all symbols that would otherwise start with a .L
(or L on MachO) unnamed.

Some of these symbols still show up in the symbol table, but we can just
make them unnamed.

In order to make sure we produce identical results when going thought assembly,
all .L (not just the compiler produced ones), are now unnamed.

Running llc on llvm-as.opt.bc, the peak memory usage goes from 208.24MB to
205.57MB.

llvm-svn: 240130
2015-06-19 12:16:55 +00:00
Daniel Jasper 9fb676a254 clang-format: Make exception to AlwaysBreakBeforeMultilineStrings more
conservative.

In particular, this fixes an unwanted corner case.

Before:
  string s =
      someFunction("aaaa"
                   "bbbb");

After:
  string s = someFunction(
      "aaaa"
      "bbbb");

llvm-svn: 240129
2015-06-19 10:32:28 +00:00
Daniel Jasper c105a9a16e clang-format: Add TypeScript detection to git-clang-format.
llvm-svn: 240128
2015-06-19 08:23:10 +00:00
Daniel Jasper b5a0b85494 clang-format: Better fix to detect elaborated enum return types.
The previous one (r240021) regressed:
  enum E Type::f() { .. }

llvm-svn: 240127
2015-06-19 08:17:32 +00:00
Alexey Bataev 259ef9234d [ATTRIBUTE] Fixed test compatibility.
llvm-svn: 240126
2015-06-19 08:09:27 +00:00
Alexey Bataev 326057d0da [ATTRIBUTE] Support base vector types of __attribute__((mode)), patch by Alexey Frolov
Base type of attribute((mode)) can actually be a vector type.
The patch is to distinguish between base type and base element type.

This fixes http://llvm.org/PR17453.
Differential Revision: http://reviews.llvm.org/D10058

llvm-svn: 240125
2015-06-19 07:46:21 +00:00
Tobias Grosser 94aed4fc52 IRBuilder: Add unit tests for construction of globals with address space
This was forgotten in r240113. Thanks Eric for paying attention.

llvm-svn: 240124
2015-06-19 07:19:17 +00:00
Bhushan D. Attarde 13f5425a7e [LLDB][MIPS] ABI Plugin for MIPS64
SUMMARY:
This patch implements ABI plugin for MIPS64.

Reviewers: clayborg
Subscribers: mohit.bhakkad, sagar, jaydeep, emaste, nitesh.jain, lldb-commits
Differential Revision: http://reviews.llvm.org/D10534

llvm-svn: 240123
2015-06-19 04:25:07 +00:00
Filipe Cabecinhas 08e3669c56 CMake: Stop using LLVM's custom parse_arguments (delete implementation). NFC
Summary:
Finally, delete LLVM's parse_arguments() definition.
Second part of D10531.

This is dependent on http://reviews.llvm.org/D10529

Reviewers: pcc, beanz, chapuni

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10531

llvm-svn: 240122
2015-06-19 03:45:42 +00:00
Filipe Cabecinhas c1b849ad17 CMake: Stop using LLVM's custom parse_arguments. NFC
Summary:
Use CMake's cmake_parse_arguments() instead.
It's called in a slightly different way, but supports all our use cases.
It's in CMake 2.8.8, which is our minimum supported version.

CMake 3.0 doc (roughly the same. No direct link to 2.8.8 doc):
http://www.cmake.org/cmake/help/v3.0/module/CMakeParseArguments.html?highlight=cmake_parse_arguments

Reviewers: pcc, beanz, chapuni

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10531

llvm-svn: 240121
2015-06-19 03:45:40 +00:00
Filipe Cabecinhas 7af0a1cb84 CMake: Stop using LLVM's custom parse_arguments. NFC
Summary:
Use CMake's cmake_parse_arguments() instead.
It's called in a slightly different way, but supports all our use cases.
It's in CMake 2.8.8, which is our minimum supported version.

CMake 3.0 doc (roughly the same. No direct link to 2.8.8 doc):
http://www.cmake.org/cmake/help/v3.0/module/CMakeParseArguments.html?highlight=cmake_parse_arguments

Since I was already changing these calls, I changed ARCH and LIB into
ARCHS and LIBS to make it more clear that they're lists of arguments.

Reviewers: eugenis, samsonov, beanz

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10529

llvm-svn: 240120
2015-06-19 03:39:24 +00:00
Tobias Grosser e7e628cc07 Add NVIDIA vprintf printing to RuntimeDebugBuilder
2nd try, this time with the corresponding LLVM IRBuilder changes in place.

llvm-svn: 240119
2015-06-19 02:33:45 +00:00
Ahmed Bougacha 9a9094260d [ARM] Look through concat when lowering in-place shuffles (VZIP, ..)
Currently, we canonicalize shuffles that produce a result larger than
their operands with:
  shuffle(concat(v1, undef), concat(v2, undef))
->
  shuffle(concat(v1, v2), undef)

because we can access quad vectors (see PerformVECTOR_SHUFFLECombine).

This is useful in the general case, but there are special cases where
native shuffles produce larger results: the two-result ops.

We can look through the concat when lowering them:
  shuffle(concat(v1, v2), undef)
->
  concat(VZIP(v1, v2):0, :1)

This lets us generate the native shuffles instead of scalarizing to
dozens of VMOVs.

Differential Revision: http://reviews.llvm.org/D10424

llvm-svn: 240118
2015-06-19 02:32:35 +00:00
Peter Collingbourne d954601f63 CFI: Implement bitset emission for the Microsoft ABI.
Clang's control flow integrity implementation works by conceptually attaching
"tags" (in the form of bitset entries) to each virtual table, identifying
the names of the classes that the virtual table is compatible with. Under
the Itanium ABI, it is simple to assign tags to virtual tables; they are
simply the address points, which are available via VTableLayout. Because any
overridden methods receive an entry in the derived class's virtual table,
a check for an overridden method call can always be done by checking the
tag of whichever derived class overrode the method call.

The Microsoft ABI is a little different, as it does not directly use address
points, and overrides in a derived class do not cause new virtual table entries
to be added to the derived class; instead, the slot in the base class is
reused, and the compiler needs to adjust the this pointer at the call site
to (generally) the base class that initially defined the method. After the
this pointer has been adjusted, we cannot check for the derived class's tag,
as the virtual table may not be compatible with the derived class. So we
need to determine which base class we have been adjusted to.

Specifically, at each call site, we use ASTRecordLayout to identify the most
derived class whose virtual table is laid out at the "this" pointer offset
we are using to make the call, and check the virtual table for that tag.

Because address point information is unavailable, we "reconstruct" it as
follows: any virtual tables we create for a non-derived class receive a tag
for that class, and virtual tables for a base class inside a derived class
receive a tag for the base class, together with tags for any derived classes
which are laid out at the same position as the derived class (and therefore
have compatible virtual tables).

Differential Revision: http://reviews.llvm.org/D10520

llvm-svn: 240117
2015-06-19 02:30:43 +00:00
Ahmed Bougacha 2ffa91f908 [ARM] Factor out two-result shuffle matching. NFCI.
In preparation for a future patch: makes it easier to do the same
matching to generate different nodes, without duplication.

llvm-svn: 240116
2015-06-19 02:25:01 +00:00
Peter Collingbourne 04dca77460 Fix Windows test failure.
llvm-svn: 240115
2015-06-19 02:24:25 +00:00
Ahmed Bougacha 7dbea8cec9 [ARM] Add D-sized vtrn/vuzp/vzip tests, and cleanup. NFC.
llvm-svn: 240114
2015-06-19 02:15:34 +00:00
Tobias Grosser cdb89147c8 IRBuilder: Allow globals to be constructed in a specific address space
llvm-svn: 240113
2015-06-19 02:12:07 +00:00
Eric Christopher 572e03a396 Fix "the the" in comments.
llvm-svn: 240112
2015-06-19 01:53:21 +00:00
Peter Collingbourne 175d633271 Add control flow integrity diagnosis function to UBSan runtime library.
Also includes execution tests for the feature.

Differential Revision: http://reviews.llvm.org/D10269

llvm-svn: 240111
2015-06-19 01:52:55 +00:00
Eric Christopher 2c4555ad1b Fix "the the" in comments/documentation/etc.
llvm-svn: 240110
2015-06-19 01:52:53 +00:00
Peter Collingbourne 6708c4a176 Implement diagnostic mode for -fsanitize=cfi*, -fsanitize=cfi-diag.
This causes programs compiled with this flag to print a diagnostic when
a control flow integrity check fails instead of aborting. Diagnostics are
printed using UBSan's runtime library.

The main motivation of this feature over -fsanitize=vptr is fidelity with
the -fsanitize=cfi implementation: the diagnostics are printed under exactly
the same conditions as those which would cause -fsanitize=cfi to abort the
program. This means that the same restrictions apply regarding compiling
all translation units with -fsanitize=cfi, cross-DSO virtual calls are
forbidden, etc.

Differential Revision: http://reviews.llvm.org/D10268

llvm-svn: 240109
2015-06-19 01:51:54 +00:00
Alexey Samsonov 2a567835d1 Revert "Revert "[CMake] LSan is not actually available on Darwin.""
Re-land fixed version of r239955.

llvm-svn: 240108
2015-06-19 01:34:06 +00:00