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Commit Graph

20741 Commits

Author SHA1 Message Date
JF Bastien
eeb435cbd7 Revert "Random Number Generator (llvm)"
This reverts commit cccba093090d127e0b6d17473b14c264c14c5259.

It causes build breakage.

llvm-svn: 211146
2014-06-18 06:33:23 +00:00
JF Bastien
54487ef242 Random Number Generator (llvm)
Summary:
Provides an abstraction for a random number generator (RNG) that produces a stream of pseudo-random numbers.
The current implementation uses C++11 facilities and is therefore not cryptographically secure.

The RNG is salted with the text of the current command line invocation.
In addition, a user may specify a seed (reproducible builds).

In clang, the seed can be set via
  -frandom-seed=X
In the back end, the seed can be set via
  -rng-seed=X

This is the llvm part of the patch.
clang part: D3391

Reviewers: ahomescu, rinon, nicholas, jfb

Reviewed By: jfb

Subscribers: jfb, perl

Differential Revision: http://reviews.llvm.org/D3390

llvm-svn: 211145
2014-06-18 06:23:25 +00:00
James Molloy
ed6ddd8719 Move SetTheory from utils/TableGen into lib/TableGen so Clang can use it.
llvm-svn: 211100
2014-06-17 13:10:38 +00:00
Jordan Rose
8b6500a316 Add an overload for SourceMgr::PrintMessage that takes an existing diagnostic.
llvm-svn: 211087
2014-06-17 02:15:40 +00:00
Jordan Rose
4dea0cb948 Modernize doc comments for SourceMgr.
No functionality change.

llvm-svn: 211086
2014-06-17 02:15:36 +00:00
Zachary Turner
fab75e134e Expose ValueMap's mutex type as a typedef instead of a sys::Mutex.
This enables static polymorphism of the mutex type, which is
necessary in order to replace the standard mutex implementation
with a different type.

llvm-svn: 211080
2014-06-17 00:17:38 +00:00
Zachary Turner
c472800bde Revert r211066, 211067, 211068, 211069, 211070.
These were committed accidentally from the wrong branch before having
a review sign-off.

llvm-svn: 211072
2014-06-16 22:49:41 +00:00
Zachary Turner
aa7770ba44 Kill the LLVM global lock.
llvm-svn: 211069
2014-06-16 22:40:42 +00:00
Zachary Turner
3ae7ddbd11 Remove some code churn.
llvm-svn: 211068
2014-06-16 22:40:29 +00:00
Zachary Turner
c24bca926c Remove some more code out into a separate CL.
llvm-svn: 211067
2014-06-16 22:40:17 +00:00
Zachary Turner
f62557d74d Users of the llvm global mutex must now acquire it manually.
This allows the mutex to be acquired in a guarded, RAII fashion.

llvm-svn: 211066
2014-06-16 22:39:38 +00:00
Jim Grosbach
6677259350 AArch64: Add backend intrinsic for rbit.
Define an intrinsic for the frontend to use and pattern match it to
the RBIT instruction.

rdar://9283021

llvm-svn: 211058
2014-06-16 21:55:35 +00:00
Jim Grosbach
0ce3294395 ARM: intrinsic support for rbit.
We already have an ARMISD node. Create an intrinsic to map to it so we can
add support for the frontend __rbit() intrinsic.

rdar://9283021

llvm-svn: 211057
2014-06-16 21:55:30 +00:00
Zachary Turner
49cc968196 Clean up some unnecessary mutex guards.
These were being used as unreferenced parameters to enforce that
the methods must not be called without holding a mutex, but all
of the methods in question were internal, and the methods were
only exposed through an interface whose entire purpose was to
serialize access to these structures, so expecting the methods
to be accessed under a mutex is reasonable enough.

Reviewed by: blaikie

Differential Revision: http://reviews.llvm.org/D4162

llvm-svn: 211054
2014-06-16 20:54:28 +00:00
Rafael Espindola
910ec52f4e Convert the Archive API to use ErrorOr.
Now that we have c++11, even things like ErrorOr<std::unique_ptr<...>> are
easy to use.

No intended functionality change.

llvm-svn: 211033
2014-06-16 16:08:36 +00:00
Dmitri Gribenko
4b5fc58221 Support/ConvertUTF: implement U+FFFD insertion according to the recommendation
given in the Unicode spec

That is, replace every maximal subpart of an ill-formed subsequence with one
U+FFFD.

llvm-svn: 211015
2014-06-16 11:09:46 +00:00
Manuel Klimek
f63c0c9c87 Add specialization of FoldingSetTrait for std::pair.
llvm-svn: 210990
2014-06-15 14:42:25 +00:00
Artyom Skrobov
8e686bd8fe Using llvm::sys::swapByteOrder() for the common case of byte-swapping a value in place
llvm-svn: 210978
2014-06-14 13:18:07 +00:00
Artyom Skrobov
33ac4d71e5 Adding llvm::sys::swapByteOrder() for the common use-case of byte-swapping a value in place
llvm-svn: 210976
2014-06-14 12:52:55 +00:00
Artyom Skrobov
9d70ea6c1e Renaming SwapByteOrder() to getSwappedBytes()
The next commit will add swapByteOrder(), acting in-place

llvm-svn: 210973
2014-06-14 11:36:01 +00:00
Jiangning Liu
c7a7a14ca1 Move GlobalMerge from Transform to CodeGen.
This patch is to move GlobalMerge pass from Transform/Scalar                                                           
to CodeGen, because GlobalMerge depends on TargetMachine.
In the mean time, the macro INITIALIZE_TM_PASS is also moved
to CodeGen/Passes.h. With this fix we can avoid making
libScalarOpts depend on libCodeGen.

llvm-svn: 210951
2014-06-13 22:57:59 +00:00
Eric Christopher
2ea2870f36 The hazard recognizer only needs a subtarget, not a target machine
so make it take one. Fix up all users accordingly.

llvm-svn: 210948
2014-06-13 22:38:52 +00:00
Zachary Turner
517f9bc6b9 Make the error-handling functions thread-safe.
Prior to this change, error handling functions must be installed
and removed only inside of an llvm_[start/stop]_multithreading
pair.  This change allows error handling functions to be installed
any time, and from any thread.

Reviewed by: chandlerc

Differential Revision: http://reviews.llvm.org/D4140

llvm-svn: 210937
2014-06-13 21:20:44 +00:00
Alexey Samsonov
55fd79efac 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
Rafael Espindola
0df15fc77a Finishing touch for the std::error_code transition.
While std::error_code itself seems to work OK in all platforms, there
are few annoying differences with regards to the std::errc enumeration.

This patch adds a simple llvm enumeration, which will hopefully avoid build
breakages in other platforms and surprises as we get more uses of
std::error_code.

llvm-svn: 210920
2014-06-13 17:20:48 +00:00
Tim Northover
b9ec29d7c5 IR: add "cmpxchg weak" variant to support permitted failure.
This commit adds a weak variant of the cmpxchg operation, as described
in C++11. A cmpxchg instruction with this modifier is permitted to
fail to store, even if the comparison indicated it should.

As a result, cmpxchg instructions must return a flag indicating
success in addition to their original iN value loaded. Thus, for
uniformity *all* cmpxchg instructions now return "{ iN, i1 }". The
second flag is 1 when the store succeeded.

At the DAG level, a new ATOMIC_CMP_SWAP_WITH_SUCCESS node has been
added as the natural representation for the new cmpxchg instructions.
It is a strong cmpxchg.

By default this gets Expanded to the existing ATOMIC_CMP_SWAP during
Legalization, so existing backends should see no change in behaviour.
If they wish to deal with the enhanced node instead, they can call
setOperationAction on it. Beware: as a node with 2 results, it cannot
be selected from TableGen.

Currently, no use is made of the extra information provided in this
patch. Test updates are almost entirely adapting the input IR to the
new scheme.

Summary for out of tree users:
------------------------------

+ Legacy Bitcode files are upgraded during read.
+ Legacy assembly IR files will be invalid.
+ Front-ends must adapt to different type for "cmpxchg".
+ Backends should be unaffected by default.

llvm-svn: 210903
2014-06-13 14:24:07 +00:00
Juergen Ributzka
9dda2c5782 [FastISel][X86] Add MachineMemOperand to load/store instructions.
This commit adds MachineMemOperands to load and store instructions. This allows
the peephole optimizer to fold load instructions. Unfortunatelly the peephole
optimizer currently doesn't run at -O0.

llvm-svn: 210858
2014-06-12 23:27:57 +00:00
Richard Smith
33366241df [modules] The LLVM C API does not require C++!
llvm-svn: 210842
2014-06-12 22:09:39 +00:00
Rafael Espindola
e0e308ff6d Don't use 'using std::error_code' in include/llvm.
This should make sure that most new uses use the std prefix.

llvm-svn: 210835
2014-06-12 21:46:39 +00:00
Rafael Espindola
38dc624425 Remove system_error.h.
This is a minimal change to remove the header. I will remove the occurrences
of "using std::error_code" in a followup patch.

llvm-svn: 210803
2014-06-12 17:38:55 +00:00
Zachary Turner
886b0eebc0 Remove pimpl class from PassRegistry.
Since removeRegistrationListener is no longer called during static
destruction, we can get rid of the pimpl in PassRegistry.

This should clean up the code somewhat, increase clarity, and also
allows us to put the Lock as a member of the class, instead of as a
ManagedStatic.

As part of this change, the PassInfo class is moved from
PassSupport.h to its own file, to eliminate the otherwise circular
header dependency between PassRegistry.h and PassSupport.h

Reviewed by: rnk, dblaikie

Differential Revision: http://reviews.llvm.org/D4107

llvm-svn: 210793
2014-06-12 16:06:51 +00:00
Rafael Espindola
53875ad05c Replace llvm::error_code with std::error_code.
llvm-svn: 210783
2014-06-12 14:11:22 +00:00
Rafael Espindola
d004f0c75f Don't import make_error_code into the llvm namespace.
llvm-svn: 210772
2014-06-12 11:58:49 +00:00
Alp Toker
e2408a5e03 Avoid in-class initializer from r210747
Turns out MSVC doesn't like this. Sorry for the noise!

llvm-svn: 210749
2014-06-12 04:27:37 +00:00
Alp Toker
17a7306248 Avoid anonymous namespace in header from r210747
llvm-svn: 210748
2014-06-12 04:21:14 +00:00
Alp Toker
aa2d225b8f Avoid redundant allocations in the linker optimisation hint
llvm-svn: 210747
2014-06-12 04:02:46 +00:00
Juergen Ributzka
3c469924f6 [FastISel] Add support for the stackmap intrinsic.
This implements target-independent FastISel lowering for the stackmap intrinsic.

llvm-svn: 210742
2014-06-12 03:29:26 +00:00
Rafael Espindola
6c13f4b607 Don't put generic_category in the llvm namespace.
llvm-svn: 210737
2014-06-12 02:00:39 +00:00
Rafael Espindola
b0ac81f225 Don't import error_category into the llvm namespace.
llvm-svn: 210733
2014-06-12 01:45:43 +00:00
Rafael Espindola
c7f351302b Don't import error_condition into the llvm namespace.
llvm-svn: 210731
2014-06-12 01:29:42 +00:00
Rafael Espindola
70f03ca11f Remove some low hanging fruit from system_error.h
llvm-svn: 210728
2014-06-12 01:10:47 +00:00
Rafael Espindola
1fd39ed8cc Try to fix the mingw build.
* MingW needs mapWindowsError.
* MingW is missing some entries in std::errc, but we don't use them.

llvm-svn: 210725
2014-06-12 00:24:39 +00:00
Zachary Turner
d98404210d Do not register and de-register PassRegistrationListeners during
construction and destruction.

PassRegistrationListener is intended for use as a generic listener.
In some cases, PassRegistrationListener-derived classes were being
created, and automatically registered and de-registered in static
constructors and destructors.  Since ManagedStatics are destroyed
prior to program shutdown, this leads to errors where an attempt is
made to access a ManagedStatic that has already been destroyed.

Reviewed by: rnk, dblaikie

Differential Revision: http://reviews.llvm.org/D4106

llvm-svn: 210724
2014-06-12 00:16:36 +00:00
Rafael Espindola
f72719e3d6 Implement get_magic with generic tools and inline it.
llvm-svn: 210716
2014-06-11 22:53:00 +00:00
Rafael Espindola
d2cec42a1a Remove unused has_magic.
This will allow inlining get_magic, which should in turn fix one of the mingw
build problems after the switch to std::error_code.

llvm-svn: 210712
2014-06-11 21:53:22 +00:00
Rafael Espindola
cb080681ac Use std::error_code instead of llvm::error_code.
The idea of this patch is to turn llvm/Support/system_error.h into a
transitional header that just brings in the erorr_code api to the llvm
namespace. I will remove it shortly afterwards.

The cases where the general idea needed some tweaking:

* std::errc is a namespace in msvc, so we cannot use "using std::errc". I could
add an #ifdef, but there were not that many uses, so I just added std:: to
them in this patch.

* Template specialization had to be moved to the std namespace in this
patch set already.

* The msvc implementation of default_error_condition doesn't seem to
provide the same transformations as we need. Not too surprising since
the standard doesn't actually say what "equivalent" means. I fixed the
problem by keeping our old mapping and using it at error_code
construction time.

Despite these shortcomings I think this is still a good thing. Some reasons:

* The different implementations of system_error might improve over time.
* It removes 925 lines of code from llvm already.
* It removes 6313 bytes from the text segment of the clang binary when
it is built with gcc and 2816 bytes when building with clang and
libstdc++.

llvm-svn: 210687
2014-06-11 19:05:50 +00:00
Cameron McInally
a3c0d56a4d Add AVX512 masked leadz instrinsic support.
llvm-svn: 210652
2014-06-11 12:54:45 +00:00
Jiangning Liu
a490614c0a Create macro INITIALIZE_TM_PASS.
Pass initialization requires to initialize TargetMachine for back-end
specific passes. This commit creates a new macro INITIALIZE_TM_PASS to
simplify this kind of initialization.

llvm-svn: 210641
2014-06-11 07:04:37 +00:00
Craig Topper
f86daf85d1 Convert StringMapEntry::Create to use StringRef instead of start/end pointers. Simpliies all in tree call sites. No functional change.
llvm-svn: 210638
2014-06-11 05:35:56 +00:00
Saleem Abdulrasool
bba64fba49 MC: add enumeration of WinEH data encoding
Most Windows platforms use auxiliary data for unwinding.  This information is
stored in the .pdata section.  The encoding format for the data differs between
architectures and Windows variants.  Windows MIPS and Alpha use identical
formats; Alpha64 is the same with different widths.  Windows x86_64 and Itanium
share the representation.  All Windows CE entries are identical irrespective of
the architecture.  ARMv7 (Windows [NT] on ARM) has its own format.

This enumeration will become the differentiator once the windows EH emission
infrastructure is generalised, allowing us to emit the necessary unwinding
information for Windows on ARM.

llvm-svn: 210634
2014-06-11 04:19:25 +00:00