Commit Graph

724 Commits

Author SHA1 Message Date
Ahmed Bougacha 256a869d31 [Driver] Properly support -mglobal-merge using explicit options.
Follow-up to r234666.  With this, the -m[no-]global-merge options
have the expected behavior. Previously, -mglobal-merge was ignored,
and there was no way of enabling the optimization.

llvm-svn: 234668
2015-04-11 00:10:44 +00:00
Sanjay Patel 359b105745 Process the -freciprocal-math optimization flag (PR20912)
The driver currently accepts but ignores the -freciprocal-math flag.
This patch passes the flag through and enables 'arcp' fast-math-flag
generation in IR.

Note that this change does not actually enable the optimization for
any target. The reassociation optimization that this flag specifies
was implemented by http://reviews.llvm.org/D6334 :
http://llvm.org/viewvc/llvm-project?view=revision&revision=222510

Because the optimization is done in the backend rather than IR,
the backend must be modified to understand instruction-level
fast-math-flags or a new function-level attribute must be created.

Also note that -freciprocal-math is independent of any target-specific
usage of reciprocal estimate hardware instructions. That requires
its own flag ('-mrecip').

https://llvm.org/bugs/show_bug.cgi?id=20912

llvm-svn: 234493
2015-04-09 15:03:23 +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
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
Artem Belevich f3d3db65de Remove .CUDAIsDevice flags from CodeGenOpts as it's already
available in LangOpts.

Differential Revision: http://reviews.llvm.org/D8385

llvm-svn: 232749
2015-03-19 18:58:18 +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
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 c888dd0cb8 Add fveclib option.
Review: http://reviews.llvm.org/D8097
llvm-svn: 232533
2015-03-17 20:03:11 +00:00
Justin Bogner 4e46237c6d GCOV: Expose the -coverage-exit-block-before-body flag in clang -cc1
This exposes the optional exit block placement logic from r232438 as a
clang -cc1 option. There is a test on the llvm side, but there isn't
really a way to inspect the gcov options from clang to test it here as
well.

llvm-svn: 232439
2015-03-16 23:52:21 +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
Reid Kleckner 1df0fea593 Add -fuse-line-directive flag to control usage of #line with -E
Currently -fms-extensions controls this behavior, which doesn't make
much sense. It means we can't identify what is and isn't a system header
when compiling our own preprocessed output, because #line doesn't
represent this information.

If someone is feeding Clang's preprocessed output to another compiler,
they can use this flag.

Fixes PR20553.

Reviewers: rsmith

Differential Revision: http://reviews.llvm.org/D5217

llvm-svn: 230587
2015-02-26 00:17:25 +00:00
Jacques Pienaar a50178c23e CUDA: Add option to allow host device functions to call host functions
Commiting code from review http://reviews.llvm.org/D7841

llvm-svn: 230385
2015-02-24 21:45:33 +00:00
Rafael Espindola 6b07a1c6ee Add -funique-section-names and -fno-unique-section-names options.
For now -funique-section-names is the default, so no change in default behavior.

The total .o size in a build of llvm and clang goes from 241687775 to 230649031
bytes if -fno-unique-section-names is used.

llvm-svn: 230031
2015-02-20 18:08:57 +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
Larisse Voufo 89088232b2 Add -fno-sized-deallocation option for completeness of fix in r229241 in documentation in r229818.
llvm-svn: 229950
2015-02-20 02:07:22 +00:00
Ben Langmuir 07236733be Revert adding hostname to module hash
I didn't realize how easily the hostname could change - for example just
changing wireless networks seems to prompt it in some cases.

Users can always set their own local module cache path to avoid this.

This reverts commits r228592, 228594, 228601 and 228613.
rdar://19287368

llvm-svn: 229815
2015-02-19 04:03:57 +00:00
Larisse Voufo e990a3f60c Rename flags and options to match current naming: from -fdef-sized-delete to -fdefine-sized-deallocation, and from DefaultSizedDelete to DefineSizedDeallocation.
llvm-svn: 229597
2015-02-18 01:04:10 +00:00
Larisse Voufo 5526f4f094 Revise the implementation logic of sized deallocation: Do not automatically generate weak definitions of the sized operator delete (in terms of unsized operator delete). Instead, provide the funcitonality via a new compiler flag, -fdef-sized-delete.
The current implementation causes link-time ODR violations when the delete symbols are exported into the dynamic table.

llvm-svn: 229241
2015-02-14 05:42:57 +00:00
David Majnemer a5b195a1dc Revert "Revert r229082 for a bit, it caused PR22577."
This reverts commit r229123.  It was a red herring, the bug was present
without r229082.

llvm-svn: 229205
2015-02-14 01:35:12 +00:00
Nico Weber 7ce96b853d Revert r229082 for a bit, it caused PR22577.
llvm-svn: 229123
2015-02-13 16:27:00 +00:00
David Majnemer abc482effc MS ABI: Implement /volatile:ms
The /volatile:ms semantics turn volatile loads and stores into atomic
acquire and release operations.  This distinction is important because
volatile memory operations do not form a happens-before relationship
with non-atomic memory.  This means that a volatile store is not
sufficient for implementing a mutex unlock routine.

Differential Revision: http://reviews.llvm.org/D7580

llvm-svn: 229082
2015-02-13 07:55:47 +00:00
Ben Langmuir 541c202be8 Be more conservative about gethostname()'s truncating behaviour
Don't assume it will provide an error or null-terminate the string on
truncation, since POSIX doesn't guarantee either behaviour (although
Linux and Darwin at least will do the 'right thing').

llvm-svn: 228613
2015-02-09 21:55:44 +00:00
Ben Langmuir 9be5d1ece8 Update r228592 for when gethostname() returns an error
If gethostname() is not successful, just skip adding the hostname to the
module hash.  And don't bother setting hostname[255] = 0, since if
gethostname() is successful, it will be null-terminated already (and if
it's not successful we don't read the string now.

llvm-svn: 228601
2015-02-09 20:13:11 +00:00
Ben Langmuir 521954e813 Add missing include from r228592
llvm-svn: 228594
2015-02-09 19:30:29 +00:00
Ben Langmuir d072eea5d6 Add the hostname to the module hash to avoid sharing between hosts
Sharing between hosts will cause problems for the LockFileManager, which
can timeout waiting for a process that has already died.

llvm-svn: 228592
2015-02-09 19:23:08 +00:00
Alexey Samsonov a511cdd247 Allow to specify multiple -fsanitize-blacklist= arguments.
Summary:
Allow user to provide multiple blacklists by passing several
-fsanitize-blacklist= options. These options now don't override
default blacklist from Clang resource directory, which is always
applied (which fixes PR22431).

-fno-sanitize-blacklist option now disables all blacklists that
were specified earlier in the command line (including the default
one).

This change depends on http://reviews.llvm.org/D7367.

Test Plan: regression test suite

Reviewers: timurrrr

Subscribers: cfe-commits, kcc, pcc

Differential Revision: http://reviews.llvm.org/D7368

llvm-svn: 228156
2015-02-04 17:40:08 +00:00
Ben Langmuir 532d2104ce Add cc1 option '-fmodule-feature' to add custom values for 'requires' decls
This allows clang-based tools to specify custom features that can be
tested by the 'requires' declaration in a module map file.

llvm-svn: 227868
2015-02-02 21:56:15 +00:00
David Majnemer 8ab003a0db The prefix 'Ms-' should be 'MS-'
Clang is otherwise consistent that Microsoft be abbreviated as MS, not
Ms.

llvm-svn: 227842
2015-02-02 19:30:52 +00:00
Sanjay Patel 76c9e0986c Process the -fno-signed-zeros optimization flag (PR20870)
The driver currently accepts but ignores the -fno-signed-zeros flag. 
This patch passes the flag through and enables 'nsz' fast-math-flag 
generation in IR.

The existing OpenCL flag for the same functionality is made into an
alias here. It may be removed in a subsequent patch.

This should resolve bug 20870 ( http://llvm.org/bugs/show_bug.cgi?id=20870 );
patches for the optimizer were checked in at:
http://llvm.org/viewvc/llvm-project?view=revision&revision=225050
http://llvm.org/viewvc/llvm-project?view=revision&revision=224583

Differential Revision: http://reviews.llvm.org/D6873

llvm-svn: 226915
2015-01-23 16:40:50 +00:00
Hans Wennborg 77dc236605 Implement command line options for stack probe space
This code adds the -mstack-probe-size command line option and implements the /Gs
compiler switch for clang-cl.

This should fix http://llvm.org/bugs/show_bug.cgi?id=21896

Patch by Andrew H!

Differential Revision: http://reviews.llvm.org/D6685

llvm-svn: 226601
2015-01-20 19:45:50 +00:00
Steven Wu cb0d13fc23 Adding option -fno-inline-asm to disallow inline asm
Summary:
This patch add a new option to dis-allow all inline asm.
Any GCC style inline asm will be reported as an error.

Reviewers: rnk, echristo

Reviewed By: rnk, echristo

Subscribers: bob.wilson, rnk, echristo, rsmith, cfe-commits

Differential Revision: http://reviews.llvm.org/D6870

llvm-svn: 226340
2015-01-16 23:05:28 +00:00
Chandler Carruth 0d9593ddec [cleanup] Re-sort *all* #include lines with llvm/utils/sort_includes.py
Sorry for the noise, I managed to miss a bunch of recent regressions of
include orderings here. This should actually sort all the includes for
Clang. Again, no functionality changed, this is just a mechanical
cleanup that I try to run periodically to keep the #include lines as
regular as possible across the project.

llvm-svn: 225979
2015-01-14 11:29:14 +00:00
JF Bastien c7af264486 Revert "Insert random noops to increase security against ROP attacks (clang)"
This reverts commit:
http://reviews.llvm.org/D3393

llvm-svn: 225947
2015-01-14 05:24:11 +00:00
JF Bastien 4cb557039d Insert random noops to increase security against ROP attacks (clang)
A pass that adds random noops to X86 binaries to introduce diversity with the goal of increasing security against most return-oriented programming attacks.

Command line options:
  -noop-insertion // Enable noop insertion.
  -noop-insertion-percentage=X // X% of assembly instructions will have a noop prepended (default: 50%, requires -noop-insertion)
  -max-noops-per-instruction=X // Randomly generate X noops per instruction. ie. roll the dice X times with probability set above (default: 1). This doesn't guarantee X noop instructions.

In addition, the following 'quick switch' in clang enables basic diversity using default settings (currently: noop insertion and schedule randomization; it is intended to be extended in the future).
  -fdiversify

This is the clang part of the patch.
llvm part: D3392

http://reviews.llvm.org/D3393
Patch by Stephen Crane (@rinon)

llvm-svn: 225910
2015-01-14 01:07:51 +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
Saleem Abdulrasool 76a4b95ad8 Driver: begin threading frontend support for SymbolRewriter
Allow blessed access to the symbol rewriter from the driver. Although the
symbol rewriter could be invoked through tools like opt and llc, it would not
accessible from the frontend. This allows us to read the rewrite map files in
the frontend rather than the backend and enable symbol rewriting for actually
performing the symbol interpositioning.

llvm-svn: 225504
2015-01-09 05:10:20 +00:00
Alexey Samsonov 6465d4f7a3 Fix use-after-destruction introduced in r224924.
getMainExecutable() returns a std::string, assigning its result
to StringRef immediately creates a dangling pointer. This was
detected by half-broken fast-MSan-bootstrap bot.

llvm-svn: 224956
2014-12-29 21:28:15 +00:00
Chandler Carruth fd3cc70ed4 [multilib] Teach Clang's code about multilib by threading
a CLANG_LIBDIR_SUFFIX down from the build system and using that as part
of the default resource dir computation.

Without this, essentially nothing that uses the clang driver works when
building clang with a libdir suffix. This is probably the single biggest
missing piece of support for multilib as without this people could hack
clang to end up installed in the correct location, but it would then
fail to find its own basic resources. I know of at least one distro that
has some variation on this patch to hack around this; hopefully they'll
be able to use the libdir suffix functionality directly as the rest of
these bits land.

This required fixing a copy of the code to compute Clang's resource
directory that is buried inside of the frontend (!!!). It had bitrotted
significantly relative to the driver code. I've made it essentially
a clone of the driver code in order to keep tests (which use cc1
heavily) passing. This copy should probably just be removed and the
frontend taught to always rely on an explicit resource directory from
the driver, but that is a much more invasive change for another day.

I've also updated one test which actually encoded the resource directory
in its checked output to tolerate multilib suffixes.

Note that this relies on a prior LLVM commit to add a stub to the
autoconf build system for this variable.

llvm-svn: 224924
2014-12-29 12:09:08 +00:00
Nico Weber 007215044b Add driver flags -ftrigraphs, -fno-trigraphs.
-trigraphs is now an alias for -ftrigraphs.  -fno-trigraphs makes it possible
to explicitly disable trigraphs, which couldn't be done before.

  clang -std=c++11 -fno-trigraphs

now builds without GNU extensions, but with trigraphs disabled.  Previously,
trigraphs were only disabled in GNU modes or with -std=c++1z.

Make the new -f flags the cc1 interface too.  This requires changing -trigraphs
to -ftrigraphs in a few cc1 tests.

Related to PR21974.

llvm-svn: 224790
2014-12-23 22:32:37 +00:00
Nico Weber b62ba516e7 Disable trigraphs in microsoft mode by default. Matches cl.exe.
The default value of Opts.Trigraphs now no longer depends solely on the
language input kind, so move the code out of setLangDefaults().  Also make
sure that Opts.MSVCCompat is set before the Trigraph code runs.

Related to PR21974.

llvm-svn: 224719
2014-12-22 18:35:03 +00:00
Rafael Espindola fd8de1c3ae Fix handling of invalid -O options.
We were checking the value after truncating it to a bitfield.

Thanks to Yunzhong Gao for noticing it.

llvm-svn: 224378
2014-12-16 21:57:03 +00:00
Nick Lewycky 246532627e Add a new flag, -fspell-checking-limit=<number> to control how many times we'll do spell checking. Note that spell checking will change the produced AST, so we don't automatically change this value when someone sets -ferror-limit=. With this, merge test typo-correction-pt2.cpp into typo-correction.cpp.
Remove Sema::UnqualifiedTyposCorrected, a cache of corrected typos. It would only cache typo corrections that didn't provide ValidateCandidate of which there were few left, and it had a bug when we had the same identifier spelled wrong twice. See the last two tests in typo-correction.cpp for cases this fires.

llvm-svn: 224375
2014-12-16 21:39:02 +00:00
Pekka Jaaskelainen 3701450b06 OpenCL C: Add support for a set of floating point
arithmetic relaxation flags:

-cl-no-signed-zeros
-cl-unsafe-math-optimizations
-cl-finite-math-only
-cl-fast-relaxed-math

Propagate the info to FP instruction flags as well
as function attributes where they are available.

llvm-svn: 223928
2014-12-10 16:41:14 +00:00
Richard Smith 9acb99e342 Reinstate r223753, reverted in r223759 due to breakage of clang-tools-extra.
Original commit message:

[modules] Add experimental -fmodule-map-file-home-is-cwd flag to -cc1.

For files named by -fmodule-map-file=, and files found by 'extern module'
directives, this flag specifies that we should resolve filenames relative to
the current working directory rather than relative to the directory in which
the module map file resides. This is aimed at fixing path handling, in
particular for relative -I paths, when building modules that represent
components of the current project (rather than libraries installed on the
current system, which the current project has as dependencies, where we'd
typically expect the module map files to be looked up implicitly).

llvm-svn: 223913
2014-12-10 03:09:48 +00:00
Duncan P. N. Exon Smith 00a4da73d5 Revert "[modules] Add experimental -fmodule-map-file-home-is-cwd flag to -cc1."
This reverts commit r223753.  It broke the Green Dragon build for a few
hours:

  http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-incremental_build/2259/
  http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-incremental_build/2259/consoleFull#43901905849ba4694-19c4-4d7e-bec5-911270d8a58c

I suspect `clang-tools-extra` just needs a follow-up for an API change,
but I'm not the right one to look into it.

llvm-svn: 223759
2014-12-09 06:35:37 +00:00
Richard Smith 0152e78146 [modules] Add experimental -fmodule-map-file-home-is-cwd flag to -cc1.
For files named by -fmodule-map-file=, and files found by 'extern module'
directives, this flag specifies that we should resolve filenames relative to
the current working directory rather than relative to the directory in which
the module map file resides. This is aimed at fixing path handling, in
particular for relative -I paths, when building modules that represent
components of the current project (rather than libraries installed on the
current system, which the current project has as dependencies, where we'd
typically expect the module map files to be looked up implicitly).

llvm-svn: 223753
2014-12-09 03:20:04 +00:00
Richard Smith 4a89a06d0d PR21217: Slightly more eagerly load -fmodule-map-file= files and provide
diagnostics if they don't exist. Based on a patch by John Thompson!

llvm-svn: 223561
2014-12-06 01:13:41 +00:00
Reid Kleckner bbc0178518 CUDA host device code with two code paths
Summary:
Allow CUDA host device functions with two code paths using __CUDA_ARCH__
to differentiate between code path being compiled.

For example:
  __host__ __device__ void host_device_function(void) {
  #ifdef __CUDA_ARCH__
    device_only_function();
  #else
    host_only_function();
  #endif
  }

Patch by Jacques Pienaar.

Reviewed By: rnk

Differential Revision: http://reviews.llvm.org/D6457

llvm-svn: 223271
2014-12-03 21:53:36 +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
Anastasia Stulova 561e0aa180 Extended list of valid frontend options with '-cl-std=CL2.0'.
This option sets language mode for the compilation of a source file to be OpenCL v2.0.

Example: clang -cc1 -cl-std=CL2.0 myfile.cl
llvm-svn: 222444
2014-11-20 19:25:00 +00:00
Reid Kleckner e070b99b84 Remove -fseh-exceptions in favor of checking the triple
This option was misleading because it looked like it enabled the
language feature of SEH (__try / __except), when this option was really
controlling which EH personality function to use. Mingw only supports
SEH and SjLj EH on x86_64, so we can simply do away with this flag.

llvm-svn: 221963
2014-11-14 02:01:10 +00:00
Kostya Serebryany 75b4f9e1e6 Introduce -fsanitize-coverage=N flag
Summary:
This change makes the asan-coverge (formerly -mllvm -asan-coverge)
accessible via a clang flag.
Companion patch to LLVM is http://reviews.llvm.org/D6152

Test Plan: regression tests, chromium

Reviewers: samsonov

Reviewed By: samsonov

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D6153

llvm-svn: 221719
2014-11-11 22:15:07 +00:00
Alexey Samsonov a041610f11 [Sanitizer] Refactor sanitizer options in LangOptions.
Get rid of ugly SanitizerOptions class thrust into LangOptions:
* Make SanitizeAddressFieldPadding a regular language option,
  and rely on default behavior to initialize/reset it.
* Make SanitizerBlacklistFile a regular member LangOptions.
* Introduce the helper class "SanitizerSet" to represent the
  set of enabled sanitizers and make it a member of LangOptions.
  It is exactly the entity we want to cache and modify in CodeGenFunction,
  for instance. We'd also be able to reuse SanitizerSet in
  CodeGenOptions for storing the set of recoverable sanitizers,
  and in the Driver to represent the set of sanitizers
  turned on/off by the commandline flags.

No functionality change.

llvm-svn: 221653
2014-11-11 01:26:14 +00:00
Alexey Samsonov edf99a92c0 Introduce a SanitizerKind enum to LangOptions.
Use the bitmask to store the set of enabled sanitizers instead of a
bitfield. On the negative side, it makes syntax for querying the
set of enabled sanitizers a bit more clunky. On the positive side, we
will be able to use SanitizerKind to eventually implement the
new semantics for -fsanitize-recover= flag, that would allow us
to make some sanitizers recoverable, and some non-recoverable.

No functionality change.

llvm-svn: 221558
2014-11-07 22:29:38 +00:00
Fariborz Jahanian a6556f7295 Objective-C SDK modernization tool. Use its own option
,-objcmt-migrate-property-dot-syntax, when migarting to use
property-dot syntax in place of messaging expression.
rdar://18839124

llvm-svn: 221001
2014-10-31 21:19:45 +00:00
Nick Lewycky f04f237e0c Add a new -fmerge-functions -cc1 flag that enables function merging.
llvm-svn: 220543
2014-10-24 00:49:29 +00:00
Justin Bogner 5a6a2fcdee Driver: Include driver diagnostics when we --serialize-diagnostics
Currently, when --serialize-diagnostics is passed this only includes
the diagnostics from clang -cc1, and driver diagnostics are
dropped. This causes issues for tools that use the serialized
diagnostics, since stderr is lost and these diagnostics aren't seen at
all.

We handle this by merging the diagnostics from the CC1 process and the
driver diagnostics into a single file when the driver invokes CC1.

Fixes rdar://problem/10585062

llvm-svn: 220525
2014-10-23 22:20:11 +00:00
Diego Novillo 795f53ba64 Support using sample profiles with partial debug info (driver)
Summary:
When using a profile, we used to require the use -gmlt so that we could
get access to the line locations. This is used to match line numbers in
the input profile to the line numbers in the function's IR.

But this is actually not necessary. The driver can provide source
location tracking without the emission of debug information. In these
cases, the annotation 'llvm.dbg.cu' is missing from the IR, but the
actual line location annotations are still present.

This patch tells the driver to only emit source location tracking
when -fprofile-sample-use is present in the command line.

Reviewers: echristo, dblaikie

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5888

llvm-svn: 220383
2014-10-22 13:00:05 +00:00
Richard Smith e842a47452 [modules] Initial support for explicitly loading .pcm files.
Implicit module builds are not well-suited to a lot of build systems. In
particular, they fare badly in distributed build systems, and they lead to
build artifacts that are not tracked as part of the usual dependency management
process. This change allows explicitly-built module files (which are already
supported through the -emit-module flag) to be explicitly loaded into a build,
allowing build systems to opt to manage module builds and dependencies
themselves.

This is only the first step in supporting such configurations, and it should
be considered experimental and subject to change or removal for now.

llvm-svn: 220359
2014-10-22 02:05:46 +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
Alexey Samsonov ae5804f3d7 Move -fsanitize-blacklist to LangOpts from CodeGenOpts. NFC.
After http://reviews.llvm.org/D5687 is submitted, we will need
SanitizerBlacklist before the CodeGen phase, so make it a LangOpt
(as it will actually affect ABI / class layout).

llvm-svn: 219842
2014-10-15 20:22:54 +00:00
Kostya Serebryany aed71a89bc Add experimental clang/driver flag -fsanitize-address-field-padding=N
Summary:
This change adds an experimental flag -fsanitize-address-field-padding=N (0, 1, 2)
to clang and driver. With this flag ASAN will be able to detect some cases of
intra-object-overflow bugs,
see https://code.google.com/p/address-sanitizer/wiki/IntraObjectOverflow

There is no actual functionality here yet, just the flag parsing.
The functionality is being reviewed at http://reviews.llvm.org/D5687

Test Plan: Build and run SPEC, LLVM Bootstrap, Chrome with this flag.

Reviewers: samsonov

Reviewed By: samsonov

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5676

llvm-svn: 219417
2014-10-09 17:53:04 +00:00
Jonathan Roelofs b140a100a0 CFE Knob for: Add a thread-model knob for lowering atomics on baremetal & single threaded systems
http://reviews.llvm.org/D4985

llvm-svn: 219027
2014-10-03 21:57:44 +00:00
Reid Kleckner 8f45c9cc62 Add -fseh-exceptions for MinGW-w64
This adds a flag called -fseh-exceptions that uses the native Windows
.pdata and .xdata unwind mechanism to throw exceptions. The other EH
possibilities are DWARF and SJLJ exceptions.

Patch by Martell Malone!

Reviewed By: asl, rnk

Differential Revision: http://reviews.llvm.org/D3419

llvm-svn: 217790
2014-09-15 17:19:16 +00:00
David Majnemer 9676a2bc47 Frontend: Reindent Opts.CoverageFile
No functional change intended.

llvm-svn: 216888
2014-09-01 18:50:05 +00:00
Anna Zaks d5478fdd8f Add an option to silence all analyzer warnings.
People have been incorrectly using "-analyzer-disable-checker" to
silence analyzer warnings on a file, when analyzing a project. Add
the "-analyzer-disable-all-checks" option, which would allow the
suppression and suggest it as part of the error message for
"-analyzer-disable-checker". The idea here is to compose this with
"--analyze" so that users can selectively opt out specific files from
static analysis.

llvm-svn: 216763
2014-08-29 20:01:38 +00:00
Oliver Stannard ed8ecc8429 Allow __fp16 as a function arg or return type for AArch64
ACLE 2.0 allows __fp16 to be used as a function argument or return
type. This enables this for AArch64.

This also fixes an existing bug that causes clang to not allow
homogeneous floating-point aggregates with a base type of __fp16. This
is valid for AAPCS64, but not for AAPCS-VFP.

llvm-svn: 216558
2014-08-27 16:31:57 +00:00
Joerg Sonnenberger a43604ad50 Convert MC command line flag for fatal assembler warnings into a proper
flag.

llvm-svn: 216472
2014-08-26 18:40:25 +00:00
Aaron Ballman dd69ef38db C++1y is now C++14!
Changes diagnostic options, language standard options, diagnostic identifiers, diagnostic wording to use c++14 instead of c++1y. It also modifies related test cases to use the updated diagnostic wording.

llvm-svn: 215982
2014-08-19 15:55:55 +00:00
Rafael Espindola 04ab21d75d Convert a few ownership comments with std::unique_ptr.
llvm-svn: 215853
2014-08-17 22:12:58 +00:00
Richard Smith 35f986d3cd Modify behavior of -ast-dump-lookups: if -ast-dump is not also provided, dump
anyway. If -ast-dump *is* also provided, then dump the AST declarations as well
as the lookup results. This is invaluable for cross-correlating the lookup
information with the declarations actually found.

llvm-svn: 215393
2014-08-11 22:11:07 +00:00
Alex Lorenz f2cf38e020 Add a cc1 "dump-coverage-mapping" for testing coverage mapping.
Differential Revision: http://reviews.llvm.org/D4799

llvm-svn: 215258
2014-08-08 23:41:24 +00:00
Richard Smith 3be1cb294f Use -Rblah, not -Wblah, to control remark diagnostics. This was always the
intent when we added remark support, but was never implemented in the general
case, because the first -R flags didn't need it. (-Rpass= had special handling
to accomodate its argument.)

-Rno-foo, -Reverything, and -Rno-everything can be used to turn off a remark,
or to turn on or off all remarks. Per discussion on cfe-commits, -Weverything
does not affect remarks, and -Reverything does not affect warnings or errors.

The only "real" -R flag we have right now is -Rmodule-build; that flag is
effectively renamed from -Wmodule-build to -Rmodule-build by this change.

-Wpass and -Wno-pass (and their friends) are also renamed to -Rpass and
-Rno-pass by this change; it's not completely clear whether we intended to have
a -Rpass (with no =pattern), but that is unchanged by this commit, other than
the flag name. The default pattern is effectively one which matches no passes.
In future, we may want to make the default pattern be .*, so that -Reverything
works for -Rpass properly.

llvm-svn: 215046
2014-08-07 00:24:21 +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
Alex Lorenz ee02499a8f Add coverage mapping generation.
This patch adds the '-fcoverage-mapping' option which
allows clang to generate the coverage mapping information
that can be used to provide code coverage analysis using
the execution counts obtained from the instrumentation 
based profiling (-fprofile-instr-generate).

llvm-svn: 214752
2014-08-04 18:41:51 +00:00
Ben Langmuir b537a3a651 Add stopgap option -fmodule-implementation-of <name>
This flag specifies that we are building an implementation file of the
module <name>, preventing importing <name> as a module. This does not
consider this to be the 'current module' for the purposes of doing
modular checks like decluse or non-modular-include warnings, unlike
-fmodule-name.

This is needed as a stopgap until:
1) we can resolve relative includes to a VFS-mapped module (or can
   safely import a header textually and as part of a module)

and ideally
2) we can safely do incremental rebuilding when implementation files
   import submodules.

llvm-svn: 213767
2014-07-23 15:30:23 +00:00
Saleem Abdulrasool c68237bc2c Driver: bifurcate extended and basic MSC versioning
This restores the original behaviour of -fmsc-version. The older option
remains as a mechanism for specifying the basic version information. A
secondary option, -fms-compatibility-version permits the user to specify an
extended version to the driver.

The new version takes the value as a dot-separated value rather than the
major * 100 + minor format that -fmsc-version format. This makes it easier to
specify the value as well as a more flexible manner for specifying the value.

Specifying both values is considered an error.

The older parameter is left solely as a driver option, which is normalised into
the newer parameter. This allows us to retain a single code path in the
compiler itself whilst preserving the semantics of the old parameter as well as
avoid having to determine which of two formats are being used by the invocation.

The test changes are due to the fact that the compiler no longer supports the
old option, and is a direct conversion to the new option.

llvm-svn: 213119
2014-07-16 03:13:50 +00:00
Rafael Espindola 2d2b420ab9 Update for llvm api change.
llvm-svn: 212408
2014-07-06 17:43:24 +00:00
Alp Toker f994cef836 Track IntrusiveRefCntPtr::get() changes from LLVM r212366
llvm-svn: 212369
2014-07-05 03:08:06 +00:00
David Majnemer f607234fde Driver: Handle /GR- in a compatible way with MSVC
There are slight differences between /GR- and -fno-rtti which made
mapping one to the other inappropriate.

-fno-rtti disables dynamic_cast, typeid, and does not emit RTTI related
information for the v-table.

/GR- does not generate complete object locators and thus will not
reference them in vftables.  However, constructs like dynamic_cast and
typeid are permitted.

This should bring our implementation of RTTI up to semantic parity with
MSVC modulo bugs.

llvm-svn: 212138
2014-07-01 22:24:56 +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
Saleem Abdulrasool f7062b2313 Driver: correct behaviour of -fmsc-version=MAJOR
Ensure that we properly handle the case where just the major version component
is provided by the user.

Thanks to Alp Toker for pointing out that this was not handled correctly!

llvm-svn: 211506
2014-06-23 17:36:36 +00:00
Saleem Abdulrasool 9d45e77dca Driver: enhance MSC version compatibility
The version information for Visual Studio is spread over multiple variables.
The newer Windows SDK has started making use of some of the extended versioning
variables that were previously undefined.  Enhance our compatibility definitions
for these cases.

_MSC_VER is defined to be the Major * 100 + Minor.  _MSC_FULL_VER is defined to
be Major * 10000000 + Minor * 100000 + Build.  And _MSC_BUILD is the build
revision of the compiler.

Extend the -fmsc-version option in a compatible manner.  If the value is the
previous form of MMmm, then we assume that the build number is 0.  Otherwise, a
specific build number may be passed by using the form MMmmbbbbb.  Due to
bitwidth limitations of the option, it is currently not possible to define a
revision value.

The version information can be passed as either the decimal encoded value
(_MSC_FULL_VER or _MSC_VER) or as a dot-delimited value.

The change to the TextDiagnostic is to deal with the updated encoding of the
version information.

llvm-svn: 211420
2014-06-20 22:58:35 +00:00
Richard Smith 4676203011 [C++1z] Implement N3981: Disable trigraphs by default in C++1z mode.
llvm-svn: 211392
2014-06-20 19:23:57 +00:00
Justin Bogner 86d1259ca7 Frontend: Add a CC1 flag to dump module dependencies to a directory
This adds the -module-dependency-dir to clang -cc1, which specifies a
directory to copy all of a module's dependencies into in a form
suitable to be used as a VFS using -ivfsoverlay with the generated
vfs.yaml.

This is useful for crashdumps that involve modules, so that the module
dependencies will be intact when a crash report script is used to
reproduce a problem on another machine.

We currently encode the absolute path to the dump directory, due to
limitations in the VFS system. Until we can handle relative paths in
the VFS, users of the VFS map may need to run a simple search and
replace in the file.

llvm-svn: 211303
2014-06-19 19:36:03 +00:00
Diego Novillo 18362bfd27 Remove dead code.
The parsing for -Rpass= had been factored into the function
GenerateOptimizationRemarkRegex, but at the time I forgot to remove
the original code that just handled OPT_Rpass_EQ.

llvm-svn: 211122
2014-06-17 20:01:51 +00:00
Richard Smith dbd4d4c837 Add -std=c++1z flag for C++17 features.
llvm-svn: 211030
2014-06-16 15:16:56 +00:00
Rafael Espindola 8a8e554adc Include system_error directly.
llvm-svn: 210802
2014-06-12 17:19:42 +00:00
Rafael Espindola 3ae0620a45 There is no std::errc:success, remove the llvm one.
llvm-svn: 209959
2014-05-31 03:20:52 +00:00
Diego Novillo d23ec94393 Add flags -Rpass-missed and -Rpass-analysis.
Summary:
These two flags are in the same family as -Rpass, but are used in
different situations.

-Rpass-missed is used by optimizers to inform the user when they tried
to apply an optimization but couldn't (or wouldn't).

-Rpass-analysis is used by optimizers to report analysis results back
to the user (e.g., why the transformation could not be applied).

Depends on D3682.

Reviewers: rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D3683

llvm-svn: 209839
2014-05-29 19:55:06 +00:00
Aaron Ballman a670c20894 No longer allow the -std options to entirely override the -x language option. This allows -x cuda -std=c++11, for instance.
llvm-svn: 209824
2014-05-29 16:39:42 +00:00
Craig Topper 49a2790fb3 [C++11] Use 'nullptr'. Frontend edition.
llvm-svn: 209389
2014-05-22 04:46:25 +00:00
Alp Toker c7dc0621a7 Make DiagnosticsEngine non-copyable
Also provide an out-of-line dtor for CompilerInvocation.

Cleanup work that may help reduce header inclusion for IntrusiveRefCntPtr.

llvm-svn: 208512
2014-05-11 22:10:52 +00:00
Ed Maste 279b97c130 Enable standalone-debug by default on FreeBSD
It was set by default on Darwin in r198655.  The same usability issues
with DTrace and LLDB apply to FreeBSD, so set it by default there too.

rdar://problem/15758808
http://llvm.org/pr19676

Differential Revision: http://reviews.llvm.org/D3448

llvm-svn: 208310
2014-05-08 13:01:26 +00:00
Saleem Abdulrasool 62849c677c Driver: parse -mcmodel earlier
This addresses an existing FIXME item in the driver.  The code model flag was
parsed in the actual tool rather than in the driver.  This was problematic since
the value may be invalid.  In that case, we would silently treat it as a default
value in non-assert builds, and abort in assert builds.  Add a check in the
driver to validate that the value being passed is valid, and if not provide a
proper error message.

llvm-svn: 208275
2014-05-08 02:28:32 +00:00
Richard Smith 3d23c42029 If an instantiation of a template is required to be a complete type, check
whether the definition of the template is visible rather than checking whether
the instantiated definition happens to be in an imported module.

llvm-svn: 208150
2014-05-07 02:25:43 +00:00
Argyrios Kyrtzidis d113788ecb Speculative fix to unbreak the buildbots that fail with compiler errors.
llvm-svn: 207933
2014-05-04 05:27:24 +00:00
Argyrios Kyrtzidis 1b1256a1b1 [Modules] Add the resource-dir to the module hash.
llvm-svn: 207931
2014-05-04 04:35:31 +00:00
Rafael Espindola b5b622a03c Drop non-cfi assembly support from clang.
After this patch clang will ignore -fdwarf2-cfi-asm and -ffno-dwarf2-cfi-asm and
always print assembly that uses cfi directives.

In llvm, MC itself supports cfi since the end of 2010 (support started
in r119972, is reported in the 2.9 release notes).

In binutils the support has been around for much longer. It looks like
support started to be added in May 2003. It is available in 2.15
(31-Aug-2011, 2.14 is from 12-Jun-2003).

llvm-svn: 207602
2014-04-30 02:22:09 +00:00
Argyrios Kyrtzidis fe6b880de5 [PCH/Modules] Don't tie TargetOptions::LinkerVersion to a module/PCH, it's a driver only thing and doesn't affect any language/preprocessor/etc. semantics.
rdar://16714526

llvm-svn: 207570
2014-04-29 18:45:01 +00:00