Commit Graph

2943 Commits

Author SHA1 Message Date
Bob Wilson 433cb315d3 Report an error when -m<os>-version-min= does not specify a version.
Currently if you use -mmacosx-version-min or -mios-version-min without
specifying a version number, clang silently sets the minimum version to
"0.0.0". This is almost certainly not what was intended, so it is better
to report it as an error. rdar://problem/20433945

llvm-svn: 234270
2015-04-07 01:03:35 +00:00
Benjamin Kramer 1a8fa8b431 Update our list of distros a bit.
- Debian jessie will be released this month, add the next testing version to the list.
- RHEL7 was released last june.
- Ubuntu utopic was released last october, vivid will follow later this month.

llvm-svn: 234149
2015-04-06 12:30:43 +00:00
Rafael Espindola 298059a4ac This reverts commit r234104, bringing back 233393 now that ARM is fixed.
Original message:

Don't use unique section names by default if using the integrated as.

This saves some IO and ccache space by not creating long section names. It
should work with every ELF linker.

llvm-svn: 234143
2015-04-06 04:36:45 +00:00
Rafael Espindola d7329ef99f Revert "Revert "Revert "Don't use unique section names by default if using the integrated as."""
This reverts commit r234101. I will debug what went wrong with ARM.

llvm-svn: 234104
2015-04-04 19:32:41 +00:00
Rafael Espindola 321fabfd8e Revert "Revert "Don't use unique section names by default if using the integrated as.""
This reverts commit r233398, bringing back 233393 now that LLVM is fixed.

Original message:

Don't use unique section names by default if using the integrated as.

This saves some IO and ccache space by not creating long section names. It
should work with every ELF linker.

llvm-svn: 234101
2015-04-04 18:21:14 +00:00
Eric Christopher 269c2a29ef Complete comment. Reflow conditional.
llvm-svn: 234083
2015-04-04 03:34:43 +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
Alexey Samsonov 31095469aa [UBSan] Embed UBSan into ASan runtime (Clang part).
Summary:
Change the way we use ASan and UBSan together. Instead of keeping two
separate runtimes (libclang_rt.asan and libclang_rt.ubsan), embed UBSan
into ASan and get rid of libclang_rt.ubsan. If UBSan is not supported on
a platform, all UBSan sources are just compiled into dummy empty object
files. UBSan initialization code (e.g. flag parsing) is directly called
from ASan initialization, so we are able to enforce correct
initialization order.

This mirrors the approach we already use for ASan+LSan. This change doesn't
modify the way we use standalone UBSan.

Test Plan: regression test suite

Reviewers: kubabrecka, zaks.anna, kcc, rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8645

llvm-svn: 233860
2015-04-01 22:42:25 +00:00
Ulrich Weigand 3a610ebf1e [SystemZ] Support transactional execution on zEC12
The zEC12 provides the transactional-execution facility.  This is exposed
to users via a set of builtin routines on other compilers.  This patch
adds clang support to enable those builtins.  In partciular, the patch:

- enables the transactional-execution feature by default on zEC12
- allows to override presence of that feature via the -mhtm/-mno-htm options
- adds a predefined macro __HTM__ if the feature is enabled
- adds support for the transactional-execution GCC builtins
- adds Sema checking to verify the __builtin_tabort abort code
- adds the s390intrin.h header file (for GCC compatibility)
- adds s390 sections to the htmintrin.h and htmxlintrin.h header files

Since this is first use of target-specific intrinsics on the platform,
the patch creates the include/clang/Basic/BuiltinsSystemZ.def file and
hooks it up in TargetBuiltins.h and lib/Basic/Targets.cpp.

An associated LLVM patch adds the required LLVM IR intrinsics.

For reference, the transactional-execution instructions are documented
in the z/Architecture Principles of Operation for the zEC12:
http://publibfp.boulder.ibm.com/cgi-bin/bookmgr/download/DZ9ZR009.pdf
The associated builtins are documented in the GCC manual:
http://gcc.gnu.org/onlinedocs/gcc/S_002f390-System-z-Built-in-Functions.html
The htmxlintrin.h intrinsics provided for compatibility with the IBM XL
compiler are documented in the "z/OS XL C/C++ Programming Guide".

llvm-svn: 233804
2015-04-01 12:54:25 +00:00
Craig Topper a8bd6008ee [X86] Use getHostCPUFeatures when 'native' is specified for cpu.
This is necessary because not aall Sandybridge, Ivybrige, Haswell, and Broadwell CPUs support AVX. Currently we modify the CPU name back to Nehalem for this case, but that turns off additional features for these CPUs.

llvm-svn: 233672
2015-03-31 05:45:00 +00:00
Derek Schuff 6ab52fabcf Add driver support for Native Client SDK
Add Tool and ToolChain support for clang to target the NaCl OS using the NaCl
SDK for x86-32, x86-64 and ARM.

Includes nacltools::Assemble and Link which are derived from gnutools. They
are similar to Linux but different enought that they warrant their own class.
Also includes a NaCl_TC in ToolChains derived from Generic_ELF with library
and include paths suitable for an SDK and independent of the system tools.

Differential Revision: http://reviews.llvm.org/D8590

llvm-svn: 233594
2015-03-30 20:31:33 +00:00
Rafael Espindola d053d20d0d Revert "Don't use unique section names by default if using the integrated as."
This reverts commit r233393 while a debug a bot failure.

llvm-svn: 233398
2015-03-27 19:01:14 +00:00
Rafael Espindola 463a0afe15 Don't use unique section names by default if using the integrated as.
This saves some IO and ccache space by not creating long section names. It
should work with every ELF linker.

llvm-svn: 233393
2015-03-27 17:55:23 +00:00
Ed Schouten 6e57615ac8 Enable -ffunction-sections and -fdata-sections for CloudABI by default.
Unlike most of the other platforms supported by Clang, CloudABI only
supports static linkage, for the reason that global filesystem access is
prohibited. Functions provided by dlfcn.h are not present. As we know
that applications will not try to do any symbol lookups at run-time, we
can garbage collect unused code quite aggressively. Because of this, it
makes sense to enable -ffunction-sections and -fdata-sections by
default.

Object files will be a bit larger than usual, but the resulting binary
will not be affected, as the sections are merged again. However, when
--gc-sections is used, the linker is able to remove unused code far more
more aggressively. It also has the advantage that transitive library
dependencies only need to be provided to the linker in case that
functionality is actually used.

Differential Revision:	http://reviews.llvm.org/D8635
Reviewed by:	echristo

llvm-svn: 233299
2015-03-26 17:50:28 +00:00
Ed Schouten 3c3e58c42d Let Clang invoke CloudABI's linker.
Now that CloudABI's target information and header search logic for Clang
has been submitted, the only thing that remains to be done is adding
support for CloudABI's linker.

CloudABI uses Binutils ld, although there is some work to use lld
instead. This means that this code is largely based on what we use on
FreeBSD. There are some exceptions, however:

- Only static linking is performed. CloudABI does not support any
  dynamically linked executables.
- CloudABI uses compiler-rt, libc++ and libc++abi unconditionally. Link
  in these libraries instead of using libgcc_s, libstdc++, etc.
- We must ensure that the .eh_frame_hdr is present to make C++
  exceptions work properly.


Differential Revision:	http://reviews.llvm.org/D8250

llvm-svn: 233269
2015-03-26 11:13:44 +00:00
Alexey Samsonov 498f3c3416 [UBSan] Use shared library for UBSan on OS X (Clang part).
Summary:
UBSan is now used in the same way as ASan, and is supported on
OSX and on iOS simulator. At the moment ASan and UBSan can't be used
together due to PR21112, but I hope to resolve it soon by
embedding UBSan into ASan.

Test Plan: regression test suite.

Reviewers: zaks.anna, kubabrecka

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8471

llvm-svn: 233035
2015-03-23 23:14:05 +00:00
Alexey Samsonov 3ae177cdb3 [UBSan] Introduce "ubsan_standalone" library (Clang part).
Get rid of "libclang_rt.san" library that used to contain
sanitizer_common pieces required by UBSan if it's used in a standalone
mode. Instead, build two variants of UBSan runtime: "ubsan" and
"ubsan_standalone" (same for "ubsan_cxx" and "ubsan_standalone_cxx").

Later "ubsan" and "ubsan_cxx" libraries will go away, as they will
embedded it into corresponding ASan runtimes.

llvm-svn: 233010
2015-03-23 20:05:42 +00:00
Eric Christopher c54920a123 Fix and update comments and a small reformatting.
llvm-svn: 232997
2015-03-23 19:26:05 +00:00
Scott Douglass 3205f52198 handle armeb/thumb/thumbeb consistently in gnutools::Assemble::ConstructJob
Differential Revision: http://reviews.llvm.org/D8196

llvm-svn: 232940
2015-03-23 10:54:24 +00:00
Scott Douglass d4cfffccc7 Convert cascading if-else-if to switch. NFC
Differential Revision: http://reviews.llvm.org/D8485

llvm-svn: 232939
2015-03-23 10:46:28 +00:00
Benjamin Kramer ac75baaad8 [multilib] Turn virtual functor into functin_ref
And update code to use lambdas where possible, plus random cleanup. NFCI.

llvm-svn: 232916
2015-03-22 15:56:12 +00:00
David Majnemer c371ff048d MS ABI: Implement driver-level support for thread-safe statics
Decide whether or not to use thread-safe statics depending on whether or
not we have an explicit request from the driver.  If we don't have an
explicit request, infer which behavior to use depending on the
compatibility version we are targeting.

N.B. CodeGen support is still ongoing.

llvm-svn: 232906
2015-03-22 08:39:22 +00:00
Filipe Cabecinhas c473255110 Only add -fno-rtti if KernelOrKext or in C++ mode.
llvm-svn: 232869
2015-03-20 23:51:15 +00:00
Filipe Cabecinhas 3e707d98ee Don't claim exception related arguments when looking at RTTIMode
Summary:
We were claiming the -f*exceptions arguments when looking for the
RTTIMode. This makes us not warn about unused arguments if compiling a C
file with -fcxx-exceptions.

This patch fixes it by not claiming the exception-related arguments at
that point.

Reviewers: rsmith, samsonov

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8507

llvm-svn: 232860
2015-03-20 23:33:23 +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
Kostya Serebryany 6fe5fcbcbc Allow -fsanitize-coverage with -fsanitize=dataflow
Summary: Allow -fsanitize-coverage with -fsanitize=dataflow

Test Plan: check-clang

Reviewers: pcc

Reviewed By: pcc

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8476

llvm-svn: 232787
2015-03-20 00:06:52 +00:00
Artem Belevich 83a6dcc470 Ensure that we still parse preprocessed CUDA files as CUDA when we use
-save-temps option.

Summary: Fixes PR22926.

Review: http://reviews.llvm.org/D8383
llvm-svn: 232737
2015-03-19 17:32:06 +00:00
Manuel Klimek c68aa16d46 Add option to switch off putting header modules into the dependency file.
llvm-svn: 232721
2015-03-19 12:00:22 +00:00
Yaron Keren 92e1b62d45 Remove many superfluous SmallString::str() calls.
Now that SmallString is a first-class citizen, most SmallString::str()
calls are not required. This patch removes a whole bunch of them, yet
there are lots more.

There are two use cases where str() is really needed:
1) To use one of StringRef member functions which is not available in
SmallString.
2) To convert to std::string, as StringRef implicitly converts while 
SmallString do not. We may wish to change this, but it may introduce
ambiguity.

llvm-svn: 232622
2015-03-18 10:17:07 +00:00
Michael Zolotukhin d0cf6c852a Imply linker arguments from '-fveclib' option.
Summary: As discussed in D8097, we should provide corresponding linking flags when 'fveclib' is specified.

Reviewers: hfinkel

Differential Revision: http://reviews.llvm.org/D8362

llvm-svn: 232556
2015-03-17 22:13:05 +00:00
Michael Zolotukhin c888dd0cb8 Add fveclib option.
Review: http://reviews.llvm.org/D8097
llvm-svn: 232533
2015-03-17 20:03:11 +00:00
Renato Golin e11531f7ea [ARM] Add support for ARMV6K subtarget (Clang)
ARMv6K is another layer between ARMV6 and ARMV6T2. This is the Clang
side of the changes.

ARMV6 family LLVM implementation.

+-------------------------------------+
| ARMV6                               |
+----------------+--------------------+
| ARMV6M (thumb) | ARMV6K (arm,thumb) | <- From ARMV6K and ARMV6M processors
+----------------+--------------------+    have support for hint instructions
| ARMV6T2 (arm,thumb,thumb2)          |    (SEV/WFE/WFI/NOP/YIELD). They can
+-------------------------------------+    be either real or default to NOP.
| ARMV7 (arm,thumb,thumb2)            |    The two processors also use
+-------------------------------------+    different encoding for them.

Patch by Vinicius Tinti.

llvm-svn: 232469
2015-03-17 11:55:43 +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 3f8dafb021 Fix grammar in a comment, wrap to 80 columns. No behavior change.
llvm-svn: 232087
2015-03-12 19:37:10 +00:00
Justin Bogner 0cb14759fc Driver: Keep -isysroot flags in crash scripts if we're dumping a VFS
For crashes with a VFS (ie, with modules), the -isysroot flag is often
necessary to reproduce the crash. This is especially true if some
modules need to be rebuilt, since without the sysroot they'll try to
read headers that are outside of the VFS.

I find it likely that we should keep some of the other -i flags in
this case as well, but I haven't seen that come up in practice yet so
it seems better to be conservative.

llvm-svn: 231997
2015-03-12 00:52:56 +00:00
Justin Bogner 42220ed3da Driver: Print the clang version and original command in crash scripts
When a crash report script doesn't work for a reproduction on your
machine for one reason or another, it can be really tricky to figure
out why not. The compiler version that crashed and the original
command line before stripping flags are very helpful when this comes
up.

llvm-svn: 231989
2015-03-12 00:14:35 +00:00
Alexey Samsonov ce2e77c771 Add deprecation notice for -f(no-)sanitize-recover flags.
These flags should be replaced with corresponding
-f(no-)sanitize-recover=<list> flags.

llvm-svn: 231983
2015-03-11 23:34:25 +00:00
Hal Finkel 0d0a1a53e3 [PowerPC] ABI support for the QPX vector instruction set
Support for the QPX vector instruction set, used on the IBM BG/Q supercomputer,
has recently been added to the LLVM PowerPC backend. This vector instruction
set requires some ABI modifications because the ABI on the BG/Q expects
<4 x double> vectors to be provided with 32-byte stack alignment, and to be
handled as native vector types (similar to how Altivec vectors are handled on
mainline PPC systems). I've named this ABI variant elfv1-qpx, have made this
the default ABI when QPX is supported, and have updated the ABI handling code
to provide QPX vectors with the correct stack alignment and associated
register-assignment logic.

llvm-svn: 231960
2015-03-11 19:14:15 +00:00
Nico Weber e93bcd1752 Gender-neutralize a comment.
llvm-svn: 231891
2015-03-11 00:05:26 +00:00
David Blaikie 7a3cbb2997 Simplify boolean expressions in clang with clang-tidy
Patch by Richard (legalize at xmission dot com).

Differential Revision: http://reviews.llvm.org/D8155

llvm-svn: 231619
2015-03-09 02:02:07 +00:00
Chandler Carruth 7e7dd47fc2 Much like we silence warnings about -flto in many cases to facilitate
simplicity in build systems, silence '-stdlib=libc++' when linking. Even
if we're not linking C++ code per-se, we may be passing this flag so
that when we are linking C++ code we pick up the desired standard
library. While most build systems already provide separate C and C++
compile flags, many conflate link flags. Sadly, CMake is among them
causing this warning in a libc++ selfhost.

llvm-svn: 231559
2015-03-07 10:01:29 +00:00
Hans Wennborg e4c47f2e8b Pass -dll to link.exe when building with -shared (PR22697)
And start building a test for non-clang-cl link.exe invocations.

llvm-svn: 231312
2015-03-04 23:16:21 +00:00
Alexey Samsonov 83791e27e6 [Sanitizers] Use uint64_t for bitmask of enabled sanitizers.
The total number of sanitizers and sanitizer groups will soon
reach 32.

llvm-svn: 231149
2015-03-03 22:15:32 +00:00
Sumanth Gundapaneni 3a159294d0 Fix program name in "clang -help"
With out this patch,
"clang -help" prints "USAGE: clang-3 [options] <inputs>".
It should either print
USAGE: clang [options] <inputs>
or

USAGE: clang-3.7 [options] <inputs>
With this patch, on Linux, it prints
USAGE: clang-3.7 [options] <inputs>

On Windows, it prints
USAGE: clang.exe [options] <inputs>

llvm-svn: 231124
2015-03-03 20:43:12 +00:00
Dan Albert 77214a4498 Don't force -pie for Android.
Summary:
There is no -no-pie flag that can override this, so making it default
to being on for Android means it is no longer possible to create
non-PIE executables on Android. While current versions of Android
support (and the most recent requires) PIE, ICS and earlier versions
of Android cannot run PIE executables, so this needs to be optional.

Reviewers: srhines

Reviewed By: srhines

Subscribers: thakis, volkalexey, cfe-commits

Differential Revision: http://reviews.llvm.org/D8015

llvm-svn: 231091
2015-03-03 18:24:57 +00:00
Fariborz Jahanian 773fa2cb03 [SDK modernizer]. Patch fixes driver's lack of
recognition of mernizer's -objcmt-migrate-property-dot-syntax
option with a new test in test/Driver. rdar://19994452

llvm-svn: 231080
2015-03-03 17:15:38 +00:00
Daniel Jasper 34d761d893 Revert r231008 (and dependent r231019).
As Chandler responded on the initial commit, just directly setting the
triple through -Xclang option to the driver creates havoc on other
platforms. The driver test should specifically go into test/Driver and
test the cc1 commandline itself.

llvm-svn: 231063
2015-03-03 10:02:53 +00:00
Fariborz Jahanian 4c616d4df5 [SDK modernizer]. Patch fixes driver's lack of
recognition of mernizer's -objcmt-migrate-property-dot-syntax
option. rdar://19994452

llvm-svn: 231008
2015-03-02 20:43:32 +00:00
Bob Wilson b111ec94b3 Add clang support for Objective-C application extensions.
This adds the -fapplication-extension option, along with the
ios_app_extension and macosx_app_extension availability attributes.
Patch by Ted Kremenek

llvm-svn: 230989
2015-03-02 19:01:14 +00:00