Commit Graph

1385 Commits

Author SHA1 Message Date
Aaron Ballman a8bc40cf3d Adding a title to appease the sphinx build bot.
llvm-svn: 240430
2015-06-23 17:31:30 +00:00
Aaron Ballman 234197f28b AttributeReference.rst is automatically generated by a server-side process currently. To cut down on accidental commits to this file that are not properly reflected in AttrDocs.td (such as r215806 - r215808), this file now contains nothing but a comment explaining the current state of affairs.
llvm-svn: 240428
2015-06-23 17:14:51 +00:00
Douglas Gregor 1a3ae83722 Document the nullability attributes.
llvm-svn: 240296
2015-06-22 17:06:56 +00:00
Alexey Samsonov 907880edd9 [CFI] Require -flto instead of implying it.
Summary:
This is unfortunate, but would let us land http://reviews.llvm.org/D10467,
that makes ToolChains responsible for computing the set of sanitizers
they support.

Unfortunately, Darwin ToolChains doesn't know about actual OS they
target until ToolChain::TranslateArgs() is called. In particular, it
means we won't be able to construct SanitizerArgs for these ToolChains
before that.

This change removes SanitizerArgs::needsLTO() method, so that now
ToolChain::IsUsingLTO(), which is called very early, doesn't need
SanitizerArgs to implement this method.

Docs and test cases are updated accordingly. See
https://llvm.org/bugs/show_bug.cgi?id=23539, which describes why we
start all these.

Test Plan: regression test suite

Reviewers: pcc

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D10560

llvm-svn: 240170
2015-06-19 19:57:46 +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
Peter Collingbourne 9881b78b53 Introduce -fsanitize-trap= flag.
This flag controls whether a given sanitizer traps upon detecting
an error. It currently only supports UBSan. The existing flag
-fsanitize-undefined-trap-on-error has been made an alias of
-fsanitize-trap=undefined.

This change also cleans up some awkward behavior around the combination
of -fsanitize-trap=undefined and -fsanitize=undefined. Previously we
would reject command lines containing the combination of these two flags,
as -fsanitize=vptr is not compatible with trapping. This required the
creation of -fsanitize=undefined-trap, which excluded -fsanitize=vptr
(and -fsanitize=function, but this seems like an oversight).

Now, -fsanitize=undefined is an alias for -fsanitize=undefined-trap,
and if -fsanitize-trap=undefined is specified, we treat -fsanitize=vptr
as an "unsupported" flag, which means that we error out if the flag is
specified explicitly, but implicitly disable it if the flag was implied
by -fsanitize=undefined.

Differential Revision: http://reviews.llvm.org/D10464

llvm-svn: 240105
2015-06-18 23:59:22 +00:00
Daniel Jasper 2aaedd3a7e clang-format: Make AlwaysBreakBeforeMultilineStrings more conservative.
In essence this is meant to consistently indent multiline strings by a
fixed amount of spaces from the start of the line. Don't do this in
cases where it wouldn't help anyway.

Before:
  someFunction(aaaaa,
               "aaaaa"
               "bbbbb");

After:
  someFunction(aaaaa, "aaaaa"
                      "bbbbb");

llvm-svn: 240004
2015-06-18 09:12:47 +00:00
Richard Smith cf18b79ccf [modules] Rename -fmodule-maps to -fimplicit-module-maps (and likewise for
-fno-module-maps). The old names are preserved for compatibility.

llvm-svn: 239792
2015-06-16 00:20:23 +00:00
Richard Smith 4cd5264534 [modules] Remove non-functional driver options -f[no-]modules-implicit-maps.
These driver options never did anything (they weren't forwarded to the
frontend). Also update the documentation to not mention them.

llvm-svn: 239787
2015-06-15 23:52:34 +00:00
Peter Collingbourne c4122c17b4 Protection against stack-based memory corruption errors using SafeStack: Clang command line option and function attribute
This patch adds the -fsanitize=safe-stack command line argument for clang,
which enables the Safe Stack protection (see http://reviews.llvm.org/D6094
for the detailed description of the Safe Stack).

This patch is our implementation of the safe stack on top of Clang. The
patches make the following changes:

- Add -fsanitize=safe-stack and -fno-sanitize=safe-stack options to clang
  to control safe stack usage (the safe stack is disabled by default).

- Add __attribute__((no_sanitize("safe-stack"))) attribute to clang that can be
  used to disable the safe stack for individual functions even when enabled
  globally.

Original patch by Volodymyr Kuznetsov and others at the Dependable Systems
Lab at EPFL; updates and upstreaming by myself.

Differential Revision: http://reviews.llvm.org/D6095

llvm-svn: 239762
2015-06-15 21:08:13 +00:00
Saleem Abdulrasool 28ff2317e5 docs: grammar adjustments in clang manpage
Fix a few typos and run-on sentences in the clang POD documentation.

Patch by Brian R. Gaeke!

llvm-svn: 239652
2015-06-13 01:21:58 +00:00
Daniel Jasper 20580fd5d3 clang-format: Make SFS_Inline imply SFS_Empty.
In the long run, these two might be independent or we might to only
allow specific combinations. Until we have a corresponding request,
however, it is hard to do the right thing and choose the right
configuration options. Thus, just don't touch the options yet and
just modify the behavior slightly.

llvm-svn: 239531
2015-06-11 13:31:45 +00:00
Vladimir Sukharev c85ed8567c Fix typo in cross-compilation docs: "-fpu" -> "-mfpu"
Reviewers: rengolin

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D10209

llvm-svn: 238912
2015-06-03 10:11:42 +00:00
Douglas Katzman 677324e0b5 Fix typo in tutorial.
llvm-svn: 238885
2015-06-02 22:40:27 +00:00
Douglas Katzman 9c19d35fa7 Correct DriverInternals.rst: ccc-print-options is gone.
Was removed in svn r189802.

llvm-svn: 238876
2015-06-02 22:06:32 +00:00
Diego Novillo 46ab35d680 Improve user documentation on profiling.
This clarifies the relationship between instrumentation and sampling based PGO,
code coverage analysis and the different formats supported by sample
profiling.

llvm-svn: 238504
2015-05-28 21:30:04 +00:00
Aaron Ballman a235996d4c Fixing an RST issue to silence a sphinx warning.
llvm-svn: 238241
2015-05-26 19:56:13 +00:00
Aaron Ballman 674cf26892 __declspec is not a core Clang language extension. Instead, require -fms-extensions or -fborland to enable the language extension.
Note: __declspec is also temporarily enabled when compiling for a CUDA target because there are implementation details relying on __declspec(property) support currently. When those details change, __declspec should be disabled for CUDA targets.
llvm-svn: 238238
2015-05-26 19:44:52 +00:00
Aaron Ballman d6ea91456a Going out on a limb and guessing that someone viewing the 3.7 release notes may instead want to view 3.6 instead of 3.5.
llvm-svn: 238212
2015-05-26 16:12:07 +00:00
Diego Novillo e0d289efbd Add clarifying note that sampling-based profiles cannot be used for code coverage.
llvm-svn: 238031
2015-05-22 16:05:07 +00:00
Aaron Ballman 8afcd0a71a Updating the documentation to include an operator! for negative capability support.
llvm-svn: 238020
2015-05-22 13:36:48 +00:00
Peter Collingbourne 915df9968b Implement no_sanitize attribute.
Differential Revision: http://reviews.llvm.org/D9631

llvm-svn: 237463
2015-05-15 18:33:32 +00:00
Richard Smith a0334a9277 Fix a #include cycle in the libclang headers. "Eventually" is now.
llvm-svn: 237320
2015-05-14 00:22:12 +00:00
Aaron Ballman d43f0c5e82 Made considerable updates to the documentation explaining how to add a new attribute to clang. Cleans up some of the existing wording, as well as adding new information and better explanations.
llvm-svn: 237268
2015-05-13 18:06:48 +00:00
Jonathan Roelofs 6800293701 Fix indentation problem introduced in r236964. NFC
llvm-svn: 236965
2015-05-11 02:13:24 +00:00
Jonathan Roelofs e868b624da Fix formatting of a few code blocks. NFC
llvm-svn: 236964
2015-05-11 02:05:20 +00:00
Alexey Samsonov 8fffba1ef1 Update docs for SanitizerCoverage.
llvm-svn: 236793
2015-05-07 23:04:19 +00:00
David Majnemer ee97fc7b15 Fix some glitches in the MSVCCompatibility document
- Fix the formatting of the "Exceptions and SEH" section.
- Make the "Complete" text for "Thread-safe initialization of local
  statics" green.

llvm-svn: 236706
2015-05-07 07:48:16 +00:00
David Majnemer 79a4d58ea1 Note that we support 'throw' for the MS ABI.
llvm-svn: 236698
2015-05-07 06:16:03 +00:00
David Majnemer 8354eeed19 [MS ABI] Implement thread-safe initialization using the MSVC 2015 ABI
The MSVC 2015 ABI utilizes a rather straightforward adaptation of the
algorithm found in the appendix of N2382.  While we are here, implement
support for emitting cleanups if an exception is thrown while we are
intitializing a static local variable.

llvm-svn: 236697
2015-05-07 06:15:46 +00:00
Sergey Matveev ea558e0b33 [docs] Update SanitizerCoverage docs.
llvm-svn: 236641
2015-05-06 21:09:00 +00:00
Reid Kleckner bc24c6ca76 Update MSVC compatibility doc note about exceptions
llvm-svn: 236458
2015-05-04 20:53:51 +00:00
Richard Smith 35932cd84d Mention PPCallbacks interface change in release notes.
llvm-svn: 236406
2015-05-04 03:18:47 +00:00
Daniel Jasper a4499133b1 clang-format: Add ability to align assignment operators.
In Objective-C some style guides use a style where assignment operators are
aligned, in an effort to increase code readability. This patch adds an option
to the format library which allows this functionality. It is disabled by
default for all the included styles, so it must be explicitly enabled.

The option will change code such as:
  - (void)method {
      NSNumber *one = @1;
      NSNumber *twentyFive = @25;
  }

to:
  - (void)method {
      NSNumber *one        = @1;
      NSNumber *twentyFive = @25;
  }

Patch by Matt Oakes. Thank you!

Accidentally reformatted all the tests...

llvm-svn: 236100
2015-04-29 13:06:49 +00:00
Paul Robinson d7214a7651 Support generating NMake/Jom-style depfiles.
NMake is a Make-like builder that comes with Microsoft Visual Studio.
Jom (https://wiki.qt.io/Jom) is an NMake-compatible build tool.
Dependency files for NMake/Jom need to use double-quotes to wrap
filespecs containing special characters, instead of the backslash
escapes that GNU Make wants.

Adds the -MV option, which specifies to use double-quotes as needed
instead of backslash escapes when writing the dependency file.

Differential Revision: http://reviews.llvm.org/D9260

llvm-svn: 235903
2015-04-27 18:14:32 +00:00
Sergey Matveev 33e322455f Fix clang docs build.
llvm-svn: 235650
2015-04-23 21:29:37 +00:00
Sergey Matveev 07e2d283a3 Add clang/docs/SanitizerCoverage.rst
Moved from https://code.google.com/p/address-sanitizer/wiki/AsanCoverage

llvm-svn: 235643
2015-04-23 20:40:04 +00:00
Peter Collingbourne 1a7488afaa Implement CFI type checks for non-virtual calls.
This uses the same class metadata currently used for virtual call and
cast checks.

The new flag is -fsanitize=cfi-nvcall. For consistency, the -fsanitize=cfi-vptr
flag has been renamed -fsanitize=cfi-vcall.

Differential Revision: http://reviews.llvm.org/D8756

llvm-svn: 233874
2015-04-02 00:23:30 +00:00
Richard Smith 8f4d3ff146 [modules] Restrict the module use-declaration to only appear in top-level
modules, and allow sub-modules of a module with a use-declaration to make use
of the nominated modules.

llvm-svn: 233323
2015-03-26 22:10:01 +00:00
Alexey Samsonov ecf380ef3b [UBSan] Don't allow to use UBSan with anything except for ASan.
We are not able to make a reliable solution for using UBSan together
with other sanitizers with runtime support (and sanitizer_common).
Instead, we want to follow the path used for LSan: have a "standalone"
UBSan tool, and plug-in UBSan that would be explicitly embedded into
specific sanitizers (in short term, it will be only ASan).

llvm-svn: 232829
2015-03-20 18:45:06 +00:00
Reid Kleckner 7ffc3fbb2f C++14: Disable sized deallocation by default due to ABI breakage
There are no widely deployed standard libraries providing sized
deallocation functions, so we have to punt and ask the user if they want
us to use sized deallocation. In the future, when such libraries are
deployed, we can teach the driver to detect them and enable this
feature.

N3536 claimed that a weak thunk from sized to unsized deallocation could
be emitted to avoid breaking backwards compatibility with standard
libraries not providing sized deallocation. However, this approach and
other variations don't work in practice.

With the weak function approach, the thunk has to have default
visibility in order to ensure that it is overridden by other DSOs
providing sized deallocation. Weak, default visibility symbols are
particularly expensive on MachO, so John McCall was considering
disabling this feature by default on Darwin. It also changes behavior
ELF linking behavior, causing certain otherwise unreferenced object
files from an archive to be pulled into the link.

Our second approach was to use an extern_weak function declaration and
do an inline conditional branch at the deletion call site. This doesn't
work because extern_weak only works on MachO if you have some archive
providing the default value of the extern_weak symbol. Arranging to
provide such an archive has the same challenges as providing the symbol
in the standard library. Not to mention that extern_weak doesn't really
work on COFF.

Reviewers: rsmith, rjmccall

Differential Revision: http://reviews.llvm.org/D8467

llvm-svn: 232788
2015-03-20 00:31:07 +00:00
Peter Collingbourne d2926c91d5 Implement bad cast checks using control flow integrity information.
This scheme checks that pointer and lvalue casts are made to an object of
the correct dynamic type; that is, the dynamic type of the object must be
a derived class of the pointee type of the cast. The checks are currently
only introduced where the class being casted to is a polymorphic class.

Differential Revision: http://reviews.llvm.org/D8312

llvm-svn: 232241
2015-03-14 02:42:25 +00:00
Nico Weber bdae5c390c Remove duplicate "the". N+1 redundancy is not useful here.
llvm-svn: 232086
2015-03-12 19:35:34 +00:00
Logan Chien 0d59d603ef [docs] Update the doxygen configuration file.
Update the doxygen configuration file and the Makefile build rules
to provide better output (simply use the default stylesheet and template
from the Doxygen distribution.)

This CL has upgrade doxygen.cfg.in to Doxygen 1.8.6.

llvm-svn: 232066
2015-03-12 17:27:53 +00:00
Logan Chien 6f43a4fa25 [docs] Replace the doxygen qch option properly.
llvm-svn: 232065
2015-03-12 17:27:19 +00:00
Peter Collingbourne 6e7908ddb7 docs: Document byte arrays.
llvm-svn: 231994
2015-03-12 00:30:41 +00:00
David Majnemer f4d9a5a964 MS ABI: Mark 'throw' as implemented in the compatibility doc
llvm-svn: 231953
2015-03-11 18:38:51 +00:00
Ben Langmuir 921f2e6746 Document __has_feature(modules) in LanguageExtensions
Fixes PR18985

Patch by Vassil Vassilev!

llvm-svn: 231789
2015-03-10 14:39:26 +00:00
Alexey Samsonov 21d2dda3d2 [UBSan] Split -fsanitize=shift into -fsanitize=shift-base and -fsanitize=shift-exponent.
This is a recommit of r231150, reverted in r231409. Turns out
that -fsanitize=shift-base check implementation only works if the
shift exponent is valid, otherwise it contains undefined behavior
itself.

Make sure we check that exponent is valid before we proceed to
check the base. Make sure that we actually report invalid values
of base or exponent if -fsanitize=shift-base or
-fsanitize=shift-exponent is specified, respectively.

llvm-svn: 231711
2015-03-09 21:50:19 +00:00
Benjamin Kramer 57dd9bd5cc ASTMatchers: Make AST_POLYMORPHIC_SUPPORTED_TYPES a variadic macro
C++11 finally allows us to use this C99 feature.

llvm-svn: 231575
2015-03-07 20:38:15 +00:00
Alexey Samsonov 48a9db034a Revert "[UBSan] Split -fsanitize=shift into -fsanitize=shift-base and -fsanitize=shift-exponent."
It's not that easy. If we're only checking -fsanitize=shift-base we
still need to verify that exponent has sane value, otherwise
UBSan-inserted checks for base will contain undefined behavior
themselves.

llvm-svn: 231409
2015-03-05 21:57:35 +00:00
Alexey Samsonov 783b8174ad [UBSan] Split -fsanitize=shift into -fsanitize=shift-base and -fsanitize=shift-exponent.
-fsanitize=shift is now a group that includes both these checks, so
exisiting users should not be affected.

This change introduces two new UBSan kinds that sanitize only left-hand
side and right-hand side of shift operation. In practice, invalid
exponent value (negative or too large) tends to cause more portability
problems, including inconsistencies between different compilers, crashes
and inadequeate results on non-x86 architectures etc. That is,
-fsanitize=shift-exponent failures should generally be addressed first.

As a bonus, this change simplifies CodeGen implementation for emitting left
shift (separate checks for base and exponent are now merged by the
existing generic logic in EmitCheck()), and LLVM IR for these checks
(the number of basic blocks is reduced).

llvm-svn: 231150
2015-03-03 22:15:35 +00:00
Evgeniy Stepanov 6e09bca0ef [msan] Change track-origins default mode from 1 to 2.
Change -fsanitize-memory-track-origins to be equivalent to
-fsanitize-memory-track-origins=2.

Track-origins=2 provides a lot more detailed reports at the cost of
some additional slowdown (ranging from none to, sometimes, 3x; ~3% average on
SPEC2006).

llvm-svn: 230644
2015-02-26 15:59:30 +00:00
Peter Collingbourne 4b0924dad6 docs: Document CFI padding and all-ones optimizations. Link to viewvc.
llvm-svn: 230588
2015-02-26 00:18:04 +00:00
Ben Langmuir 443aa4b4b0 Allow (Object *)kMyGlobalCFObj casts without bridging
Previously we allowed these casts only for constants declared in system
headers, which we assume are retain/release-neutral. Now also allow them
for constants in user headers, treating them as +0.  Practically, this
means that we will now allow:
id x = (id)kMyGlobalConst;

But unlike with system headers we cannot mix them with +1 values:
id y = (id)(b ? kMyGlobalConst : [Obj newValAtPlusOne]); // error
id z = (id)(b ? kSystemGlobalConst: [Obj newValAtPlusOne]); // OK

Thanks to John for suggesting this improvement.

llvm-svn: 230534
2015-02-25 20:09:06 +00:00
Peter Collingbourne 03054d489e docs: Document optimizations in control flow integrity design doc.
llvm-svn: 230458
2015-02-25 03:35:03 +00:00
Adrian Prantl cbc368c5b5 Revert "Wrap clang module files in a Mach-O, ELF, or COFF container."
llvm-svn: 230454
2015-02-25 02:44:04 +00:00
Adrian Prantl 8bf7af3de8 Wrap clang module files in a Mach-O, ELF, or COFF container.
This is a necessary prerequisite for debugging with modules.
The .pcm files become containers that hold the serialized AST which allows
us to store debug information in the module file that can be shared by all
object files that were built importing the module.

This reapplies r230044 with a fixed configure+make build and updated
dependencies and testcase requirements. Over the last iteration this
version adds
- missing target requirements for testcases that specify an x86 triple,
- a missing clangCodeGen.a dependency to libClang.a in the make build.

rdar://problem/19104245

llvm-svn: 230423
2015-02-25 01:31:45 +00:00
Adrian Prantl a39924a1f8 Revert "Wrap clang module files in a Mach-O, ELF, or COFF container."
This reverts commit r230305.
Off to fix another round of missing dependencies on various platforms.

llvm-svn: 230309
2015-02-24 05:14:17 +00:00
Adrian Prantl fc360dc30b Wrap clang module files in a Mach-O, ELF, or COFF container.
This is a necessary prerequisite for debugging with modules.
The .pcm files become containers that hold the serialized AST which allows
us to store debug information in the module file that can be shared by all
object files that were built importing the module.

rdar://problem/19104245

This reapplies r230044 with a fixed configure+make build and updated
dependencies. Take 3.

llvm-svn: 230305
2015-02-24 04:25:59 +00:00
Peter Collingbourne 0100e6c08c CFI: Improve design doc with larger virtual tables and asm examples.
llvm-svn: 230254
2015-02-23 20:22:17 +00:00
Adrian Prantl 67fbfa3773 Revert "Wrap clang module files in a Mach-O, ELF, or COFF container."
This reverts commit 230099.

The Linux configure+make build variant still needs some work.

llvm-svn: 230103
2015-02-21 00:29:14 +00:00
Adrian Prantl f2b0cd91eb Wrap clang module files in a Mach-O, ELF, or COFF container.
This is a necessary prerequisite for debugging with modules.
The .pcm files become containers that hold the serialized AST which allows
us to store debug information in the module file that can be shared by all
object files that were built importing the module.

rdar://problem/19104245

This reapplies r230044 with a fixed configure+make build and updated
dependencies. Take 2.

llvm-svn: 230089
2015-02-20 23:34:26 +00:00
Adrian Prantl 690b2f7746 Revert "Wrap clang module files in a Mach-O, ELF, or COFF container."
This reverts commit r230067.

Investigating another batch of problems found by the bots.

llvm-svn: 230073
2015-02-20 22:12:19 +00:00
Adrian Prantl b59bc1a528 Wrap clang module files in a Mach-O, ELF, or COFF container.
This is a necessary prerequisite for debugging with modules.
The .pcm files become containers that hold the serialized AST which allows
us to store debug information in the module file that can be shared by all
object files that were built importing the module.

rdar://problem/19104245

This reapplies r230044 with a fixed configure+make build and updated
dependencies.

llvm-svn: 230067
2015-02-20 21:53:12 +00:00
Peter Collingbourne a4ccff3281 Implement Control Flow Integrity for virtual calls.
This patch introduces the -fsanitize=cfi-vptr flag, which enables a control
flow integrity scheme that checks that virtual calls take place using a vptr of
the correct dynamic type. More details in the new docs/ControlFlowIntegrity.rst
file.

It also introduces the -fsanitize=cfi flag, which is currently a synonym for
-fsanitize=cfi-vptr, but will eventually cover all CFI checks implemented
in Clang.

Differential Revision: http://reviews.llvm.org/D7424

llvm-svn: 230055
2015-02-20 20:30:56 +00:00
Adrian Prantl a4f522fa19 Revert "Wrap clang module files in a Mach-O, ELF, or COFF container."
This reverts commit r230044 while dealing with buildbot breakage.

Conflicts:
	test/Modules/module_container.m

llvm-svn: 230052
2015-02-20 20:00:27 +00:00
Adrian Prantl c4091aa74e Wrap clang module files in a Mach-O, ELF, or COFF container.
This is a necessary prerequisite for debugging with modules.
The .pcm files become containers that hold the serialized AST which allows
us to store debug information in the module file that can be shared by all
object files that were built importing the module.

rdar://problem/19104245

llvm-svn: 230044
2015-02-20 19:44:52 +00:00
Manuel Klimek d2e8b04d61 Add -fno-implicit-modules.
If this flag is set, we error out when a module build is required. This is
useful in environments where all required modules are passed via -fmodule-file.

llvm-svn: 230006
2015-02-20 11:44:41 +00:00
Alexey Samsonov 3a433f62fb [docs] Recommend to use CMake for building sanitizers.
llvm-svn: 229754
2015-02-18 22:26:20 +00:00
Matthias Braun 44bf1c9c53 Revert "Remove support for building sanitizers from Makefile/autoconf build."
This reverts commit r229554.

Reverting this commit for now as several apple internal builds still
rely on this functionality.

llvm-svn: 229582
2015-02-17 23:27:37 +00:00
Alexey Samsonov 883a04ade7 Remove support for building sanitizers from Makefile/autoconf build.
They autotools build has a number of missing features, supports less
OS, architectures, build configurations, doesn't have any tests and
is hard to support in sync with CMake build.

llvm-svn: 229554
2015-02-17 21:53:22 +00:00
Alex Denisov 793e0676f0 Fix amount of diagnostic classes
llvm-svn: 228814
2015-02-11 07:56:16 +00:00
Samuel Benzaquen ef621f43ff Add translationUnitDecl matcher.
Summary: Add translationUnitDecl matcher.

Reviewers: alexfh

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D7512

llvm-svn: 228694
2015-02-10 14:46:45 +00:00
Yaron Keren 08ee9c803d Replace DeclContext::getNextContext with DeclContext::collectAllContexts
in the Clang CFE Internals Manual (done in r147729).

llvm-svn: 228510
2015-02-07 22:16:16 +00:00
Reid Kleckner ee15ea3560 Fix broken doc link to Clang 3.5 release notes
We appear to use 3.5.0 in the directory structure now. That's probably
unnecessary. We should probably let the micro releases update the docs
for the same minor version.

llvm-svn: 227127
2015-01-26 19:53:16 +00:00
Evgeniy Stepanov 5e927b6285 [msan] Remove MSanDR reference from the manual.
It is no longer supported.

llvm-svn: 227078
2015-01-26 09:17:37 +00:00
Hans Wennborg fb8b408ba0 docs/conf.py: update for 3.7
llvm-svn: 226010
2015-01-14 18:14:05 +00:00
Hans Wennborg 0a7ec77ee0 ReleaseNotes.rst: update to 3.7
The 3.6 release notes are in the 3.6 branch.

llvm-svn: 226009
2015-01-14 18:14:03 +00:00
Roman Divacky ed94e2f455 Mention FreeBSD support.
llvm-svn: 225834
2015-01-13 21:31:03 +00:00
Alexey Samsonov 8845952b54 Reimplement -fsanitize-recover family of flags.
Introduce the following -fsanitize-recover flags:
  - -fsanitize-recover=<list>: Enable recovery for selected checks or
      group of checks. It is forbidden to explicitly list unrecoverable
      sanitizers here (that is, "address", "unreachable", "return").
  - -fno-sanitize-recover=<list>: Disable recovery for selected checks or
     group of checks.
  - -f(no-)?sanitize-recover is now a synonym for
    -f(no-)?sanitize-recover=undefined,integer and will soon be deprecated.

These flags are parsed left to right, and mask of "recoverable"
sanitizer is updated accordingly, much like what we do for -fsanitize= flags.
-fsanitize= and -fsanitize-recover= flag families are independent.

CodeGen change: If there is a single UBSan handler function, responsible
for implementing multiple checks, which have different recoverable setting,
then we emit two handler calls instead of one:
the first one for the set of "unrecoverable" checks, another one - for
set of "recoverable" checks. If all checks implemented by a handler have the
same recoverability setting, then the generated code will be the same.

llvm-svn: 225719
2015-01-12 22:39:12 +00:00
Nico Weber a894e9e070 Fix markup from r224894.
llvm-svn: 224895
2014-12-28 02:12:59 +00:00
Nico Weber 933607f10e Add stub sections about Parse, Sema, CodeGen to the internals manual.
I'd be interested if the paragraph on Parse not knowing much about AST is
something folks agree with.  I think this used to be true after rjmccall removed
the Action interface in r112244 and I believe it's still true, but I'm not sure.
(For example, ParseOpenMP.cpp does include AST/StmtOpenMP.h.  Other than that,
Parse not using AST nodes much seems to be still true, though.)

llvm-svn: 224894
2014-12-28 02:07:26 +00:00
Aaron Ballman 4bfaeba6a9 Amending r223468 with this documentation change.
llvm-svn: 223479
2014-12-05 17:11:49 +00:00
Aaron Ballman a6f759e423 Modify __has_attribute so that it only looks for GNU-style attributes. Removes the ability to look for generic attributes and keywords via this macro, which has the potential to be a breaking change. However, since there is __has_cpp_attribute and __has_declspec_attribute, and given the limited usefulness of querying a generic attribute name regardless of syntax, this seems like the correct path forward.
llvm-svn: 223468
2014-12-05 15:24:55 +00:00
Aaron Ballman 3c0f9b4a7d Added a new preprocessor macro: __has_declspec_attribute. This can be used as a way to determine whether Clang supports a __declspec spelling for a given attribute, similar to __has_attribute and __has_cpp_attribute.
llvm-svn: 223467
2014-12-05 15:05:29 +00:00
Nico Weber 736a993828 Add support for has_feature(cxx_alignof) and has_feature(c_alignof).
r142020 added support for has_feature(cxx_alignas). This does the same for
alignof.

llvm-svn: 223186
2014-12-03 01:25:49 +00:00
Daniel Jasper 7f43266778 clang-format: Escape '*' in generated flag documentation.
llvm-svn: 223118
2014-12-02 14:21:16 +00:00
Daniel Jasper 3219e43c94 clang-format: Add option to suppress operator alignment.
With alignment:
  int aaaaaa = aa
               + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
                     * cccccccccccccccccccccccccccccccc;

Without alignment:
  int aaaaaa = aa
      + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
          * cccccccccccccccccccccccccccccccc;

This fixes llvm.org/PR21666.

llvm-svn: 223117
2014-12-02 13:24:51 +00:00
Manuel Klimek d3aa1f4a63 Re-apply r222646 (was reverted in r222667). Adding 4 ASTMatchers: typedefDecl, isInMainFile, isInSystemFile, isInFileMatchingName
Change to original: ifndef out tests in Windows due to /-separated
paths.

Summary:
Often one is only interested in matches within the main-file or matches
that are not within a system-header, for which this patch adds
isInMainFile and isInSystemFile. They take no arguments and narrow down
the matches.

The isInFileMatchingName is mainly thought for interactive
clang-query-sessions, to make a matcher more specific without restarting
the session with the files you are interested in for that moment. It
takes a string that will be used as regular-expression to match the
filename of where the matched node is expanded.

Patch by Hendrik von Prince.

llvm-svn: 222765
2014-11-25 17:01:06 +00:00
Daniel Jasper 21a0f55755 Add flag -f(no-)modules-implicit-maps.
This suppresses the implicit search for files called 'module.modulemap' and
similar.

llvm-svn: 222745
2014-11-25 09:45:48 +00:00
David Majnemer 442d0a2e5a MS ABI: Add CodeGen support for rethrowing MS C++ exceptions
Rethrowing exceptions in the MS model is very simple: just call
_CxxThrowException with nullptr for both arguments.

N.B.  They chose stdcall as the calling convention for x86 but cdecl for
all other platforms.

llvm-svn: 222733
2014-11-25 07:20:20 +00:00
David Majnemer 81537b5c8e docs: Update the MSVCCompatibility doc for changes to debug info
The document should reflect that we now support emission for DWARF.

llvm-svn: 222731
2014-11-25 06:59:35 +00:00
Aaron Ballman 6265102c17 Reverting r222646; the tests do not pass on Windows. Also reverts r222664, which was required for r222646 to compile with Visual Studio 2012.
llvm-svn: 222667
2014-11-24 17:39:44 +00:00
Manuel Klimek da50ff8e4a Adding 4 ASTMatchers: typedefDecl, isInMainFile, isInSystemFile, isInFileMatchingName
Summary:
Often one is only interested in matches within the main-file or matches
that are not within a system-header, for which this patch adds
isInMainFile and isInSystemFile. They take no arguments and narrow down
the matches.

The isInFileMatchingName is mainly thought for interactive
clang-query-sessions, to make a matcher more specific without restarting
the session with the files you are interested in for that moment. It
takes a string that will be used as regular-expression to match the
filename of where the matched node is expanded.

Patch by Hendrik von Prince.

llvm-svn: 222646
2014-11-24 09:10:56 +00:00
Aaron Ballman 631bd7b110 Oops, the underline was too short for sphinx to like.
llvm-svn: 221993
2014-11-14 14:01:55 +00:00
Aaron Ballman eb1e2f213a Correcting some grammar and typos, and adding CERT as a collaborator.
llvm-svn: 221992
2014-11-14 13:48:34 +00:00
Aaron Ballman a0344c5d7b Complete support for the SD-6 standing document (based off N4200) with support for __has_cpp_attribute.
llvm-svn: 221991
2014-11-14 13:44:02 +00:00
Richard Smith 38af8561f9 Update Clang's SD-6 support to match N4200 (except for __has_cpp_attribute,
which we don't yet implement).

llvm-svn: 221816
2014-11-12 21:16:38 +00:00
Saleem Abdulrasool 8bbed0b63a docs: remove double carriage-return
The double carriage return would silence a warning due to a missing
.clang-format.  Permit the error to bubble through.

llvm-svn: 221107
2014-11-02 21:27:52 +00:00
Daniel Jasper eb2226e4bd clang-format: Update generated documentation with new flag.
llvm-svn: 220786
2014-10-28 16:56:37 +00:00
Saleem Abdulrasool 1f060a8552 clang-format: improve vim integration docs
Improve the documentation for vim integration of clang-format.  Prefer the use
of <c-o> to do the normal mode command execution to avoid side-effects of the
escape and re-insertion (cursor movement).  Tweak the macros to use a double
return to avoid having to manually return control to the editor from the
subprocess.

llvm-svn: 220685
2014-10-27 17:13:33 +00:00
Richard Smith 202210b369 [modules] Support combining 'textual' with 'private'.
llvm-svn: 220589
2014-10-24 20:23:01 +00:00
Nick Lewycky d935be3568 Update the documentation for API change to CreateASTConsumer the rest of the way.
llvm-svn: 220450
2014-10-22 23:57:14 +00:00
Richard Smith 306d892076 [modules] Add support for 'textual header' directives.
This allows a module to specify that it logically contains a file, but that
said file is non-modular and intended for textual inclusion. This allows
layering checks to work properly in the presence of such files.

llvm-svn: 220448
2014-10-22 23:50:56 +00:00
Nick Lewycky dadf408680 Add missing qualifier to documentation.
llvm-svn: 220268
2014-10-21 06:44:23 +00:00
Nick Lewycky 185733eff9 Update documentation to match API change in r215323.
llvm-svn: 220267
2014-10-21 06:43:08 +00:00
Richard Smith ab506adf7d Switch C compilations to C11 by default.
This is long-since overdue, and matches GCC 5.0. This should also be
backwards-compatible, because we already supported all of C11 as an extension
in C99 mode.

llvm-svn: 220244
2014-10-20 23:26:58 +00:00
Richard Smith 25d50758f3 [modules] Add support for #include_next.
#include_next interacts poorly with modules: it depends on where in the list of
include paths the current file was found. Files covered by module maps are not
found in include search paths when building the module (and are not found in
include search paths when @importing the module either), so this isn't really
meaningful. Instead, we fake up the result that #include_next *should* have
given: find the first path that would have resulted in the given file being
picked, and search from there onwards.

llvm-svn: 220177
2014-10-20 00:15:49 +00:00
Alexey Samsonov a0ac3c2bf0 [ASan] Improve blacklisting of global variables.
This commit changes the way we blacklist global variables in ASan.
Now the global is excluded from instrumentation (either regular
bounds checking, or initialization-order checking) if:

1) Global is explicitly blacklisted by its mangled name.
This part is left unchanged.

2) SourceLocation of a global is in blacklisted source file.
This changes the old behavior, where instead of looking at the
SourceLocation of a variable we simply considered llvm::Module
identifier. This was wrong, as identifier may not correspond to
the file name, and we incorrectly disabled instrumentation
for globals coming from #include'd files.

3) Global is blacklisted by type.
Now we build the type of a global variable using Clang machinery
(QualType::getAsString()), instead of llvm::StructType::getName().

After this commit, the active users of ASan blacklist files
may have to revisit them (this is a backwards-incompatible change).

llvm-svn: 220097
2014-10-17 22:37:33 +00:00
JF Bastien e6ccacf9b0 Fix documentation typo.
llvm-svn: 219509
2014-10-10 16:09:48 +00:00
Manuel Klimek 7735e40a87 Implement various matchers around template argument handling.
llvm-svn: 219408
2014-10-09 13:06:22 +00:00
Aaron Ballman 201b94e63f Escaping a special character in the documentation.
llvm-svn: 219407
2014-10-09 13:03:12 +00:00
Daniel Jasper 18210d7d2f clang-format: Add option to control call argument bin-packing separately
This is desirable for the Chromium style guide:
http://www.chromium.org/developers/coding-style

llvm-svn: 219400
2014-10-09 09:52:05 +00:00
Daniel Jasper d8b4ec0dad clang-format: Add documentation about disabling formatting.
Patch by Marek Kurdej, thanks!

llvm-svn: 219204
2014-10-07 12:15:15 +00:00
Eli Bendersky 11b6badd7b Update title of the ReleaseNodes doc.
It was still "3.5 (In-Progress)" - should be 3.6

llvm-svn: 219153
2014-10-06 22:45:17 +00:00
Dan Liew fe7268600d [sphinx clean up] Fix warning introduced by r218957
llvm-svn: 218983
2014-10-03 12:36:20 +00:00
Hal Finkel 6970ac8b0a Add an implementation of C11's stdatomic.h
Adds a Clang-specific implementation of C11's stdatomic.h header. On systems,
such as FreeBSD, where a stdatomic.h header is already provided, we defer to
that header instead (using our __has_include_next technology). Otherwise, we
provide an implementation in terms of our __c11_atomic_* intrinsics (that were
created for this purpose).

C11 7.1.4p1 requires function declarations for atomic_thread_fence,
atomic_signal_fence, atomic_flag_test_and_set,
atomic_flag_test_and_set_explicit, and atomic_flag_clear, and requires that
they have external linkage. Accordingly, we provide these declarations, but if
a user elides the shadowing macros and uses them, then they must have a libc
(or similar) that actually provides definitions.

atomic_flag is implemented using _Bool as the underlying type. This is
consistent with the implementation provided by FreeBSD and also GCC 4.9 (at
least when __GCC_ATOMIC_TEST_AND_SET_TRUEVAL == 1).

Patch by Richard Smith (rebased and slightly edited by me -- Richard said I
should drive at this point).

llvm-svn: 218957
2014-10-03 04:29:40 +00:00
Richard Smith ffb650856d Enable both C and C++ modules with -fmodules, by switching -fcxx-modules to
being on by default. -fno-cxx-modules can still be used to enable C modules but
not C++ modules, but C++ modules is not significantly less stable than C
modules any more.

Also remove some of the scare words from the modules documentation. We're
certainly not going to remove modules support (though we might change the
interface), and it works well enough to bootstrap and build lots of
non-trivial code.

Note that this does not represent a commitment to the current interface nor
implementation, and we still intend to follow whatever direction the C and C++
committees take regarding modules support.

llvm-svn: 218717
2014-09-30 23:10:19 +00:00
Richard Smith bf65300f3f Update modules documentation now that C++ support is working pretty well.
llvm-svn: 218614
2014-09-29 17:46:41 +00:00
Jyoti Allur 7d9f67f76e testing commit access to clang repo
llvm-svn: 218592
2014-09-29 06:23:54 +00:00
DeLesley Hutchins 0d1ce2f199 Thread Safety Analysis: Update to documentation.
The attribute documentation now conforms to Aaron Ballman's renaming of the
thread safety attributes, as well as the new paper that is due to be published
in the conference on Source Code Analysis and Manipulation (SCAM 2014) later
this week.  In addition, recent changes to the analysis, such as checking
of references and negative capabilities, are now documented.

llvm-svn: 218420
2014-09-24 22:13:34 +00:00
Nico Weber acb35c0272 Change -Wbind-to-temporary-copy from an ExtWarn to an Extension.
The reasoning is that this construct is accepted by all compilers and valid in
C++11, so it doesn't seem like a useful warning to have enabled by default.
Building with -pedantic, -Wbind-to-temporary-copy, or -Wc++98-compat still
shows the warning.

The motivation is that I built re2, and this was the only warning that was
emitted during the build. Both changing re2 to fix the warning and detecting
clang and suppressing the warning in re2's build seem inferior than just giving
the compiler a good default for this warning.

Also move the cxx98compat version of this warning to CXX98CompatPedantic, and
update tests accordingly.

llvm-svn: 218008
2014-09-18 02:09:53 +00:00
Dan Liew e41d8e3923 [sphinx cleanup]
Fix warning introduced by r211098.

llvm-svn: 217864
2014-09-16 08:44:27 +00:00
Daniel Jasper ac043c900c clang-format: Add option to break before non-assignment operators.
This will allow:
  int aaaaaaaaaaaaaa =
      bbbbbbbbbbbbbb
      + ccccccccccccccc;

llvm-svn: 217757
2014-09-15 11:11:00 +00:00
Dan Liew 1c9547ed51 [sphinx cleanup]
Fix sphinx warning introduced by r217501.

llvm-svn: 217524
2014-09-10 17:26:21 +00:00
Daniel Jasper b87899b567 clang-format: Add option to allow short case labels on a single line.
On a single line:
  switch (a) {
  case 1: x = 1; return;
  case 2: x = 2; return;
  default: break;
  }

Not on a single line:
  switch (a) {
  case 1:
    x = 1;
    return;
  case 2:
    x = 2;
    return;
  default:
    break;
  }

This partly addresses llvm.org/PR16535. In the long run, we probably want to
lay these out in columns.

llvm-svn: 217501
2014-09-10 13:11:45 +00:00
Alexey Samsonov 8e1162c71d Implement nonnull-attribute sanitizer
Summary:
This patch implements a new UBSan check, which verifies
that function arguments declared to be nonnull with __attribute__((nonnull))
are actually nonnull in runtime.

To implement this check, we pass FunctionDecl to CodeGenFunction::EmitCallArgs
(where applicable) and if function declaration has nonnull attribute specified
for a certain formal parameter, we compare the corresponding RValue to null as
soon as it's calculated.

Test Plan: regression test suite

Reviewers: rsmith

Reviewed By: rsmith

Subscribers: cfe-commits, rnk

Differential Revision: http://reviews.llvm.org/D5082

llvm-svn: 217389
2014-09-08 17:22:45 +00:00
Hal Finkel bcc06085a8 Add __builtin_assume and __builtin_assume_aligned using @llvm.assume.
This makes use of the recently-added @llvm.assume intrinsic to implement a
__builtin_assume(bool) intrinsic (to provide additional information to the
optimizer). This hooks up __assume in MS-compatibility mode to mirror
__builtin_assume (the semantics have been intentionally kept compatible), and
implements GCC's __builtin_assume_aligned as assume((p - o) & mask == 0). LLVM
now contains special logic to deal with assumptions of this form.

llvm-svn: 217349
2014-09-07 22:58:14 +00:00
Manuel Klimek 94ad0bf10d Add matcher for linkage specification
Patch by Jacques Pienaar.

llvm-svn: 217135
2014-09-04 08:51:06 +00:00
Anton Yartsev 94e46f3eb8 Enhance the 'Vectors and Extended Vectors' section.
Added cast operations to the table of vector operations. Supported status 'no' means that there are no tests in the Clang test suite for the given cast.

llvm-svn: 217055
2014-09-03 17:59:21 +00:00
Daniel Jasper db986eb6bb clang-format: Add an option 'SpaceAfterCStyleCast'.
This permits to add a space after closing parenthesis of a C-style cast.
Defaults to false to preserve old behavior.

Fixes llvm.org/PR19982.

Before:
  (int)i;

After:
  (int) i;

Patch by Marek Kurdej.

llvm-svn: 217022
2014-09-03 07:37:29 +00:00
Yunzhong Gao 637cb90ba8 Fixing a typo in the documented __builtin_convertvector example.
"vf[0]" ==> "vs[0]"

llvm-svn: 216935
2014-09-02 19:24:14 +00:00
David Blaikie e90195c09b unique_ptrify the result of CFG::buildCFG/CFGBuilder::buildCFG
llvm-svn: 216755
2014-08-29 18:53:26 +00:00
Daniel Jasper ad981f888a clang-format: New option SpacesInSquareBrackets.
Before:
  int a[5];
  a[3] += 42;

After:
  int a[ 5 ];
  a[ 3 ] += 42;

Fixes LLVM bug #17887 (http://llvm.org/bugs/show_bug.cgi?id=17887).

Patch by Marek Kurdej, thank you!

llvm-svn: 216449
2014-08-26 11:41:14 +00:00
Manuel Klimek 3fe8a38110 Add hasAttr matcher for declarations.
Delete special-case CUDA attribute matchers.

Patch by Jacques Pienaar.

llvm-svn: 216379
2014-08-25 11:23:50 +00:00
Rafael Espindola af74250ec0 Clear the clang release notes to make room for 3.6.
llvm-svn: 216293
2014-08-22 21:59:11 +00:00
Nick Lewycky 12be8efc62 Clarify.
llvm-svn: 215808
2014-08-16 02:14:37 +00:00
Nick Lewycky 367cbddfc2 Try indenting to put all the text inside the block.
llvm-svn: 215807
2014-08-16 02:11:54 +00:00
Nick Lewycky e9a774022a Document what's experimental about __attribute__((enable_if)). PR20392
llvm-svn: 215806
2014-08-16 02:09:42 +00:00
Samuel Benzaquen 8e7f99647d Add isDeleted() matcher for FunctionDecl nodes.
Reviewers: klimek

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D4911

llvm-svn: 215714
2014-08-15 14:20:59 +00:00
Alexey Samsonov de443c5002 [UBSan] Add returns-nonnull sanitizer.
Summary:
This patch adds a runtime check verifying that functions
annotated with "returns_nonnull" attribute do in fact return nonnull pointers.
It is based on suggestion by Jakub Jelinek:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140623/223693.html.

Test Plan: regression test suite

Reviewers: rsmith

Reviewed By: rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D4849

llvm-svn: 215485
2014-08-13 00:26:40 +00:00
Alexander Kornienko 092cb21046 Add documentation on how Language option in .clang-format files work.
llvm-svn: 215443
2014-08-12 13:34:22 +00:00
Dan Liew b954493890 Fix sphinx warning.
llvm-svn: 214967
2014-08-06 13:49:33 +00:00
Fariborz Jahanian bcd82afad6 Introduce f[no-]max-unknown-pointer-align=[number] option
to instruct the code generator to not enforce a higher alignment 
than the given number (of bytes) when accessing memory via an opaque 
pointer or reference. Patch reviewed by John McCall (with post-commit
review pending). rdar://16254558

llvm-svn: 214911
2014-08-05 18:37:48 +00:00
Hans Wennborg da312809d4 ReleaseNotes: try to fix links
llvm-svn: 214883
2014-08-05 17:19:14 +00:00
Hans Wennborg 458fb14407 ReleaseNotes: mention basic debug info and ASan support in the Windows blurb
llvm-svn: 214882
2014-08-05 17:15:00 +00:00
Daniel Jasper ca4ea1ce59 clang-format: Add option to always break after a function's return type.
This is required for GNU coding style, among others.

Also update the configuration documentation.

Modified from an original patch by Jarkko Hietaniemi, thank you!

llvm-svn: 214858
2014-08-05 12:16:31 +00:00
Manuel Klimek d52a3b8897 Adds AST matchers for matching CUDA declarations.
Patch by Jacques Pienaar.

llvm-svn: 214852
2014-08-05 09:45:53 +00:00
Hans Wennborg 02dc000331 ReleaseNotes: add blurb about Windows support
llvm-svn: 214830
2014-08-05 00:21:23 +00:00
Hans Wennborg 35487d8e50 UsersManual: update clang-cl options
llvm-svn: 214777
2014-08-04 21:07:58 +00:00
Sylvestre Ledru c5290fe6b6 3.5 => 3.6
llvm-svn: 214164
2014-07-29 07:07:31 +00:00
Mark Heffernan c888e41c0c Add support for #pragma nounroll.
llvm-svn: 213885
2014-07-24 18:09:38 +00:00
Richard Smith f89e492349 [modules] Slightly expand module semantics documentation.
llvm-svn: 213838
2014-07-24 03:42:38 +00:00
Mark Heffernan 450c23843e In unroll pragma syntax and loop hint metadata, change "enable" forms to a new form using the string "full".
llvm-svn: 213771
2014-07-23 17:31:31 +00:00
Yi Kong 4de26fb2e0 ARM: Add doc for ACLE memory barrier intrinsics
Add documentations for ACLE memory barrier intrinsics, describing their motion
barrier characteristics.

llvm-svn: 213733
2014-07-23 09:25:02 +00:00
Aaron Ballman a2a3b3fc5b Escaping an RST character to correct a Sphinx warning.
llvm-svn: 213651
2014-07-22 13:12:38 +00:00
Mark Heffernan bd26f5ea4d Add support for '#pragma unroll'.
llvm-svn: 213574
2014-07-21 18:08:34 +00:00
Alp Toker 958027b698 Fix typos
Also consolidate 'backward compatibility'

llvm-svn: 212974
2014-07-14 19:42:55 +00:00
Sylvestre Ledru 0e767b16f9 Document the forward of the -u option (r211756)
llvm-svn: 212969
2014-07-14 18:34:37 +00:00
Sylvestre Ledru 5e43f74d4c Document the warning triggered by the unsupported gcc optimization flags (r212805)
llvm-svn: 212968
2014-07-14 18:30:23 +00:00
Diego Novillo 94b276deba Enable -gcolumn-info by default.
This patch flips the default value for -gcolumn-info to be on by
default. I discussed the rationale and provided compile/size data
in:

http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-June/074290.html

This also updates the documentation and some tests that relied on
the lack of column information. Some tests had column information
in the expected output, but it was wrong (the tsan tests). Others
were using the driver to execute.

llvm-svn: 212781
2014-07-10 23:29:28 +00:00
Daniel Jasper c75e1effed clang-format: Add new option to indent wrapped function declarations.
Though not completely identical, make former
IndentFunctionDeclarationAfterType change this flag for backwards
compatibility (it is somewhat close in meaning and better the err'ing on
an unknown config flag).

llvm-svn: 212597
2014-07-09 08:42:42 +00:00
Daniel Jasper 7fe6a18141 clang-format: Update flag documentation.
llvm-svn: 212594
2014-07-09 08:19:11 +00:00
Alp Toker f5ea368917 PTHInternals.rst: PCH is now a thing, update docs to reflect it
llvm-svn: 212458
2014-07-07 14:02:39 +00:00
Nico Weber d952acc197 Update internals manual on how to add AST nodes.
StmtDumper.cpp is called ASTDumper.cpp these days, and usually works well
for new AST nodes without changes.  There's now DataRecursiveASTVisitor
in addition to RecursiveASTVisitor, and serialization wasn't mentioned.

llvm-svn: 212426
2014-07-07 00:50:39 +00:00
Reid Kleckner ae7127fb32 Update the MSVC compatibilty document for class template parsing
llvm-svn: 212237
2014-07-02 23:37:33 +00:00
David Majnemer fc29d8b8c3 More editorial issues in MSVCCompatibility.rst
Make the status text for lambdas green.

llvm-svn: 212229
2014-07-02 22:14:34 +00:00
Warren Hunt 8da6cc6a05 Fix Typo in MSVCCompatibility.rst
Also removed a sentance that was no longer relevant.

llvm-svn: 212227
2014-07-02 21:46:03 +00:00
David Majnemer ac64d2b064 Fixup typo in MSVCCompatibility.rst
llvm-svn: 212219
2014-07-02 21:09:33 +00:00
David Majnemer fe828adf19 Update the MSVC Compatibility document
It hasn't been updated to reflect the progress we've made.  We've fuzz
tested VFTables, VBTables, layout, and RTTI data.  We support lambdas
that are compatible with their scheme.

llvm-svn: 212193
2014-07-02 17:26:04 +00:00
Tim Northover 3acd6bd0b6 ARM: add support for v8 ldaex/stlex builtins.
ARMv8 adds (to both AArch32 and AArch64) acquiring and releasing
variants of the exclusive operations, in line with the C++11 memory
model.

This adds support for two new intrinsics to expose them to C & C++
developers directly: __builtin_arm_ldaex and __builtin_arm_stlex, in
direct analogy with the versions with no implicit barrier.

rdar://problem/15885451

llvm-svn: 212175
2014-07-02 12:56:02 +00:00
Aaron Ballman 3cf5c9de14 Escaping a literal character to fix an RST warning.
llvm-svn: 211690
2014-06-25 12:41:28 +00:00
Diego Novillo 913690c7bc Add new debug kind LocTrackingOnly.
Summary:
This new debug emission kind supports emitting line location
information in all instructions, but stops code generation
from emitting debug info to the final output.

This mode is useful when the backend wants to track source
locations during code generation, but it does not want to
produce debug info. This is currently used by optimization
remarks (-Rpass, -Rpass-missed and -Rpass-analysis).

When one of the -Rpass flags is used, the front end will enable
location tracking, only if no other debug option is enabled.

To prevent debug information from being generated, a new debug
info kind LocTrackingOnly causes DIBuilder::createCompileUnit() to
not emit the llvm.dbg.cu annotation. This blocks final code generation
from generating debug info in the back end.

Depends on D4234.

Reviewers: echristo, dblaikie

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D4235

llvm-svn: 211610
2014-06-24 17:02:17 +00:00
Eli Bendersky 778268df57 Document unroll and unroll_count directives.
Extend the documentation for "#pragma clang loop" hints to include the unroll
and unroll_count directives.

Patch by Mark Heffernan [http://reviews.llvm.org/D4198]

llvm-svn: 211286
2014-06-19 18:12:44 +00:00
Tyler Nowicki db2668a1da Documentation for #pragma clang loop directive and options vectorize and interleave.
Reviewed by: Aaron Ballman and Dmitri Gribenko

llvm-svn: 211135
2014-06-18 00:51:32 +00:00
Daniel Jasper 553d4878da clang-format: Introduce style with spaces on both sides of */&.
Patch by Janusz Sobczak (slightly extended).
This fixes llvm.org/19929.

llvm-svn: 211098
2014-06-17 12:40:34 +00:00
Bob Wilson 3f2ed176a5 Add documentation for PGO with instrumentation to clang's User's Manual.
<rdar://problem/16771671>

llvm-svn: 211085
2014-06-17 00:45:30 +00:00
Sylvestre Ledru 06aebc4d69 One of our buildbot for FreeBSD does not support std::to_string.
Use stringstream instead to convert int to string

llvm-svn: 210972
2014-06-14 09:28:27 +00:00
Adrian Prantl 4ad03dc355 Document Darwin-specific defaults.
llvm-svn: 210958
2014-06-13 23:35:54 +00:00
Adrian Prantl f2d3e34e6f Make these two words equally bold.
llvm-svn: 210938
2014-06-13 21:31:55 +00:00
Adrian Prantl 36b8067317 Copy the documentation of -fstandalone-debug from the man page to the user
manual.

rdar://problem/17307006

llvm-svn: 210936
2014-06-13 21:12:31 +00:00
Alexey Samsonov e595e1ade0 Remove top-level Clang -fsanitize= flags for optional ASan features.
Init-order and use-after-return modes can currently be enabled
by runtime flags. use-after-scope mode is not really working at the
moment.

The only problem I see is that users won't be able to disable extra
instrumentation for init-order and use-after-scope by a top-level Clang flag.
But this instrumentation was implicitly enabled for quite a while and
we didn't hear from users hurt by it.

llvm-svn: 210924
2014-06-13 17:53:44 +00:00
Aaron Ballman 60e466f4d8 The automated server-side process isn't quite right yet, so this is a newly-generated attribute reference. Tanya is looking into the server process when she gets the chance.
llvm-svn: 210691
2014-06-11 19:11:24 +00:00
Samuel Benzaquen f56a29924f Add hasLocalStorage/hasGlobalStorage matchers.
Summary:
Add hasLocalStorage/hasGlobalStorage matchers for VarDecl nodes.
Update the doc. Also add them to the dynamic registry.

Reviewers: klimek

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D4034

llvm-svn: 210278
2014-06-05 18:22:14 +00:00
Richard Smith 760520bcb7 Add __builtin_operator_new and __builtin_operator_delete, which act like calls
to the normal non-placement ::operator new and ::operator delete, but allow
optimizations like new-expressions and delete-expressions do.

llvm-svn: 210137
2014-06-03 23:27:44 +00:00
Diego Novillo 263ce21e05 Add documentation for -Rpass*
Summary:
This adds documentation for -Rpass, -Rpass-missed and -Rpass-analysis.
It also adds release notes for 3.5.

Reviewers: rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D3730

llvm-svn: 209841
2014-05-29 20:13:27 +00:00
Dario Domizioli 33c1787147 [DOC] Documentation for #pragma clang optimize on/off
llvm-svn: 209738
2014-05-28 14:06:38 +00:00
Manuel Klimek a2c2a4faa0 Make equalsNode work with pointers to subtypes.
llvm-svn: 209652
2014-05-27 12:31:10 +00:00
Manuel Klimek 909b5c94c0 Adds child traversal matchers for IfStmt's then and else branches.
llvm-svn: 209649
2014-05-27 10:04:12 +00:00
Manuel Klimek 2af0a91cc4 Allow hasBody on CXXForRangeStmt nodes and update the docs.
llvm-svn: 209647
2014-05-27 07:45:18 +00:00
Tim Northover 573cbee543 AArch64/ARM64: rename ARM64 components to AArch64
This keeps Clang consistent with backend naming conventions.

llvm-svn: 209579
2014-05-24 12:52:07 +00:00
Peter Collingbourne 786283734a Revert r209231, "Update AttributeReference.rst."
According to Aaron, this is being generated on the server now.

llvm-svn: 209232
2014-05-20 19:38:07 +00:00
Peter Collingbourne 450a0b1dc9 Update AttributeReference.rst.
llvm-svn: 209231
2014-05-20 19:27:39 +00:00
Eric Christopher c9e2a68905 Clean up language and grammar.
Based on a patch by jfcaron3@gmail.com!
PR19806

llvm-svn: 209215
2014-05-20 17:10:39 +00:00
Daniel Jasper c0be7604cf clang-format: Fix Sphinx build error.
Patch by Adam Strzelecki, thank you!

llvm-svn: 208882
2014-05-15 13:55:19 +00:00
Daniel Jasper 2e8600c02b clang-format: Add clang-format-diff usage examples for SVN.
llvm-svn: 208766
2014-05-14 09:36:11 +00:00
Daniel Jasper 17605d3961 clang-format: Add option to allow short blocks on a single line.
With AllowShortBlocksOnASingleLine, clang-format allows:
  if (a) { return; }

Based on patch by Gonzalo BG, thank you!

llvm-svn: 208765
2014-05-14 09:33:35 +00:00
Richard Smith 6d54014144 PR19698, PR19674: enable __has_feature checks for cxx_generic_lambdas and
cxx_decltype_auto, and fix documentation of cxx_generic_lambdas and
cxx_init_captures to specify the right feature-check name.

llvm-svn: 208445
2014-05-09 21:08:59 +00:00
Richard Smith 06900a0ffb Update documentation to match recent API change. newFrontendActionFactory now returns a unique_ptr.
llvm-svn: 207789
2014-05-01 20:04:39 +00:00
Diego Novillo 9e43084fb4 Review feedback.
llvm-svn: 206997
2014-04-23 15:21:23 +00:00
Diego Novillo 897c59ce09 Review feedback.
llvm-svn: 206996
2014-04-23 15:21:21 +00:00
Diego Novillo 8ebff32487 Review feedback
llvm-svn: 206995
2014-04-23 15:21:20 +00:00
Diego Novillo a5256bf9fd Add documentation for sample profiling support.
Summary:
This documents the usage of sample profilers with Clang and the
profile format expected by LLVM's optimizers. It also documents the
profile conversion tool used by Linux Perf.

Reviewers: doug.gregor

CC: cfe-commits

Differential Revision: http://reviews.llvm.org/D3402

llvm-svn: 206994
2014-04-23 15:21:07 +00:00
John Thompson 2255f2ce90 Initial implementation of -modules-earch-all option, for searching for symbols in non-imported modules.
llvm-svn: 206977
2014-04-23 12:57:01 +00:00
Reid Kleckner 230f662d12 Fix sphinx-build warnings in clang docs.
llvm-svn: 206661
2014-04-18 21:55:49 +00:00
Reid Kleckner 5d21c4990f Add support for building Sphinx documentation when being inside LLVM source tree and using CMake
Patch by Daniel Liew <daniel.liew@imperial.ac.uk>!

llvm-svn: 206660
2014-04-18 21:55:46 +00:00
Ben Langmuir 47d1ca4838 Rename lib/Headers/module.map to module.modulemap
Don't install a file using the legacy spelling.

llvm-svn: 206431
2014-04-17 00:52:48 +00:00
Yunzhong Gao a8c45c9f88 Add description about the __is_identifier() macro
llvm-svn: 206099
2014-04-12 02:25:32 +00:00
Daniel Jasper b55248278f clang-format: Update flag documentation, and generation script.
llvm-svn: 205853
2014-04-09 14:05:49 +00:00
Daniel Jasper e1e4319ab7 clang-format: Support configurable list of foreach-macros.
This fixes llvm.org/PR17242.

Patch by Brian Green, thank you!

llvm-svn: 205307
2014-04-01 12:55:11 +00:00
Tim Northover a2ee433c8d ARM64: initial clang support commit.
This adds Clang support for the ARM64 backend. There are definitely
still some rough edges, so please bring up any issues you see with
this patch.

As with the LLVM commit though, we think it'll be more useful for
merging with AArch64 from within the tree.

llvm-svn: 205100
2014-03-29 15:09:45 +00:00
Dmitri Gribenko 3be06ffcd8 Documentation: remove a spurious '1' and wrap to 80 columns
llvm-svn: 205035
2014-03-28 19:25:09 +00:00
Douglas Gregor b5ecb908af Document module.private.modulemap and module_private.map.
Requested in <rdar://problem/16188740>.

llvm-svn: 205030
2014-03-28 19:05:18 +00:00
Alexander Kornienko 18fa48c9f9 Move the -i[no-]system-prefix options from CC1Options.td to Options.td.
Summary:
This allows them to be used without -cc1 the same way as -I and -isystem.
Renamed the options to --system-header-prefix=/--no-system-header-prefix to avoid interference with -isystem and make the intent of the option cleaner.

Reviewers: rsmith

Reviewed By: rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3185

llvm-svn: 204775
2014-03-26 01:39:59 +00:00
Alexey Samsonov 997a923eeb Document removed flags in release notes
llvm-svn: 204438
2014-03-21 07:25:01 +00:00
Evgeniy Stepanov 2bfcaabdec [msan] -fsanitize-memory-track-origins=[level] flag and docs.
This change turns -fsanitize-memory-track-origins into
-fsanitize-memory-track-origins=[level] flag (keeping the old one for
compatibility). Possible levels are 0 (off), 1 (default) and 2 (incredibly
detailed). See docs (part of this patch) for more info.

llvm-svn: 204346
2014-03-20 14:58:36 +00:00
Alexey Samsonov cb3f812b6b Kill -faddress-sanitizer, -fthread-sanitizer and -fcatch-undefined-behavior flags.
These flags are deprecated since at least Clang 3.3. Users should instead
use -fsanitize= with appropriate values.

llvm-svn: 204330
2014-03-20 10:48:29 +00:00
Ben Langmuir 984e1df77a Add a new spelling for module map files 'module.modulemap'
This name, while more verbose, plays more nicely with tools that use
file extensions to determine file types. The existing spelling
'module.map' will continue to work, but the new spelling will take
precedence.

In frameworks, this new filename will only go in a new 'Modules'
sub-directory.

Similarly, add a module.private.modulemap corresponding to
module_private.map.

llvm-svn: 204261
2014-03-19 20:23:34 +00:00
Dmitri Gribenko 10e2a8f228 CMake: allow generation of a Qt Compressed Help file for Clang source
r203272 enables generation of a Qt Compressed Help file for the LLVM source
code.

As a consequence, this change brings the same capabilities to Clang while
reusing these two variables:

  LLVM_ENABLE_DOXYGEN_QT_HELP
  LLVM_DOXYGEN_QHELPGENERATOR_PATH

and adding

  CLANG_DOXYGEN_QCH_FILENAME="org.llvm.clang.qch"
  CLANG_DOXYGEN_QHP_NAMESPACE="org.llvm.clang"
  CLANG_DOXYGEN_QHP_CUST_FILTER_NAME="Clang ${CLANG_VERSION}"
  CLANG_DOXYGEN_QHP_CUST_FILTER_ATTRS="Clang,${CLANG_VERSION}"

Patch by Konrad Kleine.

llvm-svn: 203801
2014-03-13 14:17:01 +00:00
Samuel Benzaquen a083935d0a Add loc() to the dynamic registry.
Summary:
Add loc() to the dynamic registry.
Other fixes:
 - Fix the polymorphic variant value to accept an exact match, even if
   there are other possible conversions.
 - Fix specifiesTypeLoc() to not crash on an empty
   NestedNameSpecifierLoc.

Reviewers: klimek

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D2928

llvm-svn: 203467
2014-03-10 15:40:23 +00:00
Nico Weber c7cb940440 Add a note in the user manual that tsan is not supported on Mac.
Patch from Sean McBride <sean@rogue-research.com>!

llvm-svn: 203260
2014-03-07 18:11:40 +00:00
Nico Weber ab88f0b12f "Mac OS/X" -> "Mac OS X" spelling fixes for clang.
Patch from Sean McBride <sean@rogue-research.com>!

llvm-svn: 203259
2014-03-07 18:09:57 +00:00
Dmitri Gribenko d2bbdcfc0d ExternalClangExamples: add a link to ToyClangPlugin
Patch by Alexey Denisov.

llvm-svn: 203219
2014-03-07 09:06:12 +00:00
Rui Ueyama 1987d52691 [docs] s/cpp11-migrate/clang-modernize/
llvm-svn: 203158
2014-03-06 20:30:05 +00:00
Dmitri Gribenko 28bfb48fd0 Expand documentation section on comment parsing
Patch by Jonathan Sauer, with a little editing by me.

llvm-svn: 203128
2014-03-06 16:32:09 +00:00
Nico Weber fcf6128c71 Mention clang-cl in MSVCCompatibility.rst
llvm-svn: 203002
2014-03-05 20:18:59 +00:00
Reid Kleckner 77d7698709 Fix MSVCCompatibility doc ReST and wording.
llvm-svn: 202732
2014-03-03 18:22:25 +00:00
David Majnemer fc256c3952 AttributeReference: Use UNIX line endings
llvm-svn: 202656
2014-03-02 18:17:08 +00:00
Aaron Ballman b576a36c88 Adding some cross references to the sanitizer attribute documentation. Removes a Sphinx warning pointed out by Sean Silva.
llvm-svn: 202655
2014-03-02 17:48:20 +00:00
Richard Smith 7794486846 Add [extern_c] attribute for modules, allowing a C module to be imported within an extern "C" block in C++ code.
llvm-svn: 202615
2014-03-02 05:58:18 +00:00
Richard Smith 49f906a36f If a module A exports a macro M, and a module B imports that macro and #undef's
it, importers of B should not see the macro. This is complicated by the fact
that A's macro could also be visible through a different path. The rules (as
hashed out on cfe-commits) are included as a documentation update in this
change.

With this, the number of regressions in libc++'s testsuite when modules are
enabled drops from 47 to 7. Those remaining 7 are also macro-related, and are
due to remaining bugs in this change (in particular, the handling of submodules
is imperfect).

llvm-svn: 202560
2014-03-01 00:08:04 +00:00
Reid Kleckner 49133948a9 Add Clang docs about MSVC compatibility
This documents some of the status of supported functionality in MSVC
quirks mode.  Some of this should be in
http://clang.llvm.org/compatibility.html instead when things have
stabilized.

llvm-svn: 202559
2014-02-28 23:46:04 +00:00
Tobias Grosser 741602461d Add 'remark' diagnostic type in 'clang'
A 'remark' is information that is not an error or a warning, but rather some
additional information provided to the user. In contrast to a 'note' a 'remark'
is an independent diagnostic, whereas a 'note' always depends on another
diagnostic.

A typical use case for remark nodes is information provided to the user, e.g.
information provided by the vectorizer about loops that have been vectorized.

This patch provides the initial implementation of 'remarks'. It includes the
actual definiton of the remark nodes, their printing as well as basic parameter
handling. We are reusing the existing diagnostic parameters which means a remark
can be enabled with normal '-Wdiagnostic-name' flags and can be upgraded to
an error using '-Werror=diagnostic-name'. '-Werror' alone does not upgrade
remarks.

This patch is by intention minimal in terms of parameter handling. More
experience and more discussions will most likely lead to further enhancements
in the parameter handling.

llvm-svn: 202475
2014-02-28 09:11:08 +00:00
David Majnemer ae88b72ac8 AttributeReference: Document __single_inhertiance, __multiple_inheritance, __virtual_inheritance
Add documentation for these attributes, it includes:
- Motivation for their existence.
- Examples on how to use them.
- Examples on how to misuse them.

llvm-svn: 202121
2014-02-25 08:28:55 +00:00
David Majnemer 27d8b20ee5 Modules: Fix malformed reStructuredText
llvm-svn: 202117
2014-02-25 06:22:25 +00:00
David Majnemer 6fe8a7fe8a AttributeReference: Fix a typo
llvm-svn: 202112
2014-02-25 05:33:01 +00:00
Alp Toker f45fa3dca5 Fix typos
llvm-svn: 202108
2014-02-25 04:21:44 +00:00
Aaron Ballman c523dcff29 Clarifying the wording for the noduplicate attribute.
Patch by Marcello Maggioni!

llvm-svn: 202035
2014-02-24 13:46:15 +00:00
Manuel Klimek 0389269a7d Fix AST matcher documentation for overloaded matchers.
Before this patch we would only use the fist occurance of a matcher
function in the documentation, for example leaving out
hasType(Matcher<QualType>).

llvm-svn: 202019
2014-02-24 10:40:22 +00:00
Manuel Klimek 4f8f890ade Fix docs generation for the AST matchers:
1. Move internal functions into ASTMatchersInternal.
2. Adapt dump_ast_matchers.py to the new VariadicOperatorMatcherFunc
   signature.
3. Update the actual docs with the updated tool / code.

llvm-svn: 202017
2014-02-24 10:28:36 +00:00
Aaron Ballman 5afdd1d770 Fixing the indentation of the RST content in the release notes. Fixes two warnings when building the HTML content and improves the format of the resulting content.
llvm-svn: 201987
2014-02-23 16:27:21 +00:00
Saleem Abdulrasool 3aa840e685 Release Notes: document -f{,no-}integrate-as
Now that the integrated assembler is considered a first class feature of the
compiler and has a proper feature flag, document the change in the compiler
flags.  Ensure that we indicate that the legacy flags are still available, but,
encourage users to switch to the feature flags.

llvm-svn: 201964
2014-02-23 02:08:45 +00:00
Aaron Ballman 19c02d29f5 Adding manual headings to the new capability attributes' documentation.
llvm-svn: 201942
2014-02-22 19:04:55 +00:00
Aaron Ballman 7c19ab17c7 Exposing the noduplicate attribute within Clang, which marks functions so that the optimizer does not duplicate code.
Patch thanks to Marcello Maggioni!

llvm-svn: 201941
2014-02-22 16:59:24 +00:00
Aaron Ballman 5ee46d2a9e Moving the documentation for the format attribute into AttrDocs.
llvm-svn: 201857
2014-02-21 14:36:13 +00:00
Aaron Ballman ea6668c4e8 Moving the documentation for the type safety checking attributes into AttrDocs. If a custom heading is provided, do not automatically generate the alternate spelling list. This is necessary because some attributes have distinct semantic spellings and meanings, but use the same semantic attribute internally. Such attributes should have multiple elements in their documentation list, but not show all spellings. At some point, it would be nice to have a way to attach the documentation element to a specific spelling for these cases.
llvm-svn: 201851
2014-02-21 14:14:04 +00:00
Aaron Ballman 7803b888c4 Moving the documentation for the sanitizer negation attributes into AttrDocs.
llvm-svn: 201850
2014-02-21 13:44:43 +00:00
Aaron Ballman 68893db056 Doing some temporary touch-up on the gnu namespace attribute documentation, from a post-commit review comment.
Ideally, this content will eventually find a home with the rest of the attribute documentation.

llvm-svn: 201736
2014-02-19 23:21:40 +00:00