David Majnemer [Tue, 1 Jul 2014 22:24:56 +0000 (22:24 +0000)]
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
Reid Kleckner [Tue, 1 Jul 2014 22:23:54 +0000 (22:23 +0000)]
Win64: Disable uwtable until we fix .pdata emission in LLVM
LLVM r211399 started emitting .pdata for win64 by default.
Unfortunately, it produces invalid object files. I plan to fix that
Soon. For now, don't request unwind tables. This fixes the clang-cl
self-host on win64.
llvm-svn: 212137
Tim Northover [Tue, 1 Jul 2014 22:10:30 +0000 (22:10 +0000)]
X86: remove atomic instructions *after* we've iterated through them.
Otherwise they get freed and the implicit "isa<XYZ>" tests following
turn out badly (at least under sanitizers).
Also corrects the ordering of unordered atomic stores.
llvm-svn: 212136
Juergen Ributzka [Tue, 1 Jul 2014 22:01:54 +0000 (22:01 +0000)]
[DAG] Pass the argument list to the CallLoweringInfo via move semantics. NFCI.
The argument list vector is never used after it has been passed to the
CallLoweringInfo and moving it to the CallLoweringInfo is cleaner and
pretty much as cheap as keeping a pointer to it.
llvm-svn: 212135
Tim Northover [Tue, 1 Jul 2014 21:44:59 +0000 (21:44 +0000)]
X86: delegate expanding atomic libcalls to generic code.
On targets without cmpxchg16b or cmpxchg8b, the borderline atomic
operations were slipping through the gaps.
X86AtomicExpand.cpp was delegating to ISelLowering. Generic
ISelLowering was delegating to X86ISelLowering and X86ISelLowering was
asserting. The correct behaviour is to expand to a libcall, preferably
in generic ISelLowering.
This can be achieved by X86ISelLowering deciding it doesn't want the
faff after all.
llvm-svn: 212134
Reid Kleckner [Tue, 1 Jul 2014 21:36:20 +0000 (21:36 +0000)]
Optimize InstCombine stack memory consumption
This patch reduces the stack memory consumption of the InstCombine
function "isOnlyCopiedFromConstantGlobal() ", that in certain conditions
could overflow the stack because of excessive recursiveness.
For example, in a case like this:
%0 = alloca [50025 x i32], align 4
%1 = getelementptr inbounds [50025 x i32]* %0, i64 0, i64 0
store i32 0, i32* %1
%2 = getelementptr inbounds i32* %1, i64 1
store i32 1, i32* %2
%3 = getelementptr inbounds i32* %2, i64 1
store i32 2, i32* %3
%4 = getelementptr inbounds i32* %3, i64 1
store i32 3, i32* %4
%5 = getelementptr inbounds i32* %4, i64 1
store i32 4, i32* %5
%6 = getelementptr inbounds i32* %5, i64 1
store i32 5, i32* %6
...
This piece of code crashes llvm when trying to apply instcombine on
desktop. On embedded devices this could happen with a much lower limit
of recursiveness. Some instructions (getelementptr and bitcasts) make
the function recursively call itself on their uses, which is what makes
the example above consume so much stack (it becomes a recursive
depth-first tree visit with a very big depth).
The patch changes the algorithm to be semantically equivalent, but
iterative instead of recursive and the visiting order to be from a
depth-first visit to a breadth-first visit (visit all the instructions
of the current level before the ones of the next one).
Now if a lot of memory is required a heap allocation is done instead of
the the stack allocation, avoiding the possible crash.
Reviewed By: rnk
Differential Revision: http://reviews.llvm.org/D4355
Patch by Marcello Maggioni! We don't generally commit large stress test
that look for out of memory conditions, so I didn't request that one be
added to the patch.
llvm-svn: 212133
Bruce Mitchener [Tue, 1 Jul 2014 21:22:11 +0000 (21:22 +0000)]
Fix typos.
llvm-svn: 212132
Bruce Mitchener [Tue, 1 Jul 2014 21:19:25 +0000 (21:19 +0000)]
Terminate italics tag.
llvm-svn: 212131
Alp Toker [Tue, 1 Jul 2014 21:19:13 +0000 (21:19 +0000)]
Move remaining LLVM_ENABLE_DUMP conditionals out of the headers
This macro is sometimes defined manually but isn't (and doesn't need to be) in
llvm-config.h so shouldn't appear in the headers, likewise NDEBUG.
Instead switch them over to LLVM_DUMP_METHOD on the definitions.
llvm-svn: 212130
Bruce Mitchener [Tue, 1 Jul 2014 21:18:35 +0000 (21:18 +0000)]
Minumum -> Minimum.
llvm-svn: 212129
David Blaikie [Tue, 1 Jul 2014 21:13:37 +0000 (21:13 +0000)]
DebugInfo: Keep track of subprograms who's arguments have been promoted.
Matching behavior with DeadArgumentElimination (and leveraging some
now-common infrastructure), keep track of the function from debug info
metadata if arguments are promoted.
This may produce interesting debug info - since the arguments may be
missing or of different types... but at least backtraces, inlining, etc,
will be correct.
llvm-svn: 212128
David Majnemer [Tue, 1 Jul 2014 21:10:07 +0000 (21:10 +0000)]
AST: Small simplification in VTableBuilder
Stash whether or not we have an RTTI component away instead of
recomputing it.
llvm-svn: 212127
Johannes Doerfert [Tue, 1 Jul 2014 20:52:51 +0000 (20:52 +0000)]
Introduce reduction types
This change is particularly useful in the code generation as we need
to know which binary operator/identity element we need to combine/initialize
the privatization locations.
+ Print the reduction type for each memory access
+ Adjusted the test cases to comply with the new output format and
to test for the right reduction type
llvm-svn: 212126
David Majnemer [Tue, 1 Jul 2014 20:30:31 +0000 (20:30 +0000)]
MS ABI: Reference MSVC RTTI from the VFTable
The pointer for a class's RTTI data comes right before the VFTable but
has no name. To be properly compatible with this, we do the following:
* Create a single GlobalVariable which holds the contents of the VFTable
_and_ the pointer to the RTTI data.
* Create a GlobalAlias, with appropriate linkage/visibility, that points
just after the RTTI data pointer. This ensures that the VFTable
symbol will always refer to VFTable data.
* Create a Comdat with a "Largest" SelectionKind and stick the private
GlobalVariable in it. By transitivity, the GlobalAlias will be a
member of the Comdat group. Using "Largest" ensures that foreign
definitions without an RTTI data pointer will _not_ be chosen in the
final linked image.
Whether or not we emit RTTI data depends on several things:
* The -fno-rtti flag implies that we should never not emit a pointer to
RTTI data before the VFTable.
* __declspec(dllimport) brings in the VFTable from a remote DLL. Use an
available_externally GlobalVariable to provide a local definition of
the VFTable. This means that we won't have any available_externally
definitions of things like complete object locators. This is
acceptable because they are never directly referenced.
To my knowledge, this completes the implementation of MSVC RTTI code
generation.
Further semantic work should be done to properly support /GR-.
llvm-svn: 212125
Eric Christopher [Tue, 1 Jul 2014 20:19:02 +0000 (20:19 +0000)]
Move the subtarget dependent features from SystemZTargetMachine
down to the subtarget. Add an initialization routine to assist.
llvm-svn: 212124
Eric Christopher [Tue, 1 Jul 2014 20:18:59 +0000 (20:18 +0000)]
Remove the use and initialization of the target machine and subtarget
from SystemZFrameLowering.
llvm-svn: 212123
David Blaikie [Tue, 1 Jul 2014 20:05:26 +0000 (20:05 +0000)]
DebugInfo: Provide a utility for building a mapping from llvm::Function*s to llvm::DISubprograms
Update DeadArgumentElimintation to use this, with the intent of reusing
the functionality for ArgumentPromotion as well.
llvm-svn: 212122
Alexey Samsonov [Tue, 1 Jul 2014 19:58:41 +0000 (19:58 +0000)]
[MSan] Fixup r212082: enable tests for _mm_ intrinsics if and only if the
unit test source file is compiled with Clang.
llvm-svn: 212121
Tim Northover [Tue, 1 Jul 2014 19:47:09 +0000 (19:47 +0000)]
AArch64: fix comment typo
llvm-svn: 212120
Tim Northover [Tue, 1 Jul 2014 18:53:31 +0000 (18:53 +0000)]
X86: expand atomics in IR instead of as MachineInstrs.
The logic for expanding atomics that aren't natively supported in
terms of cmpxchg loops is much simpler to express at the IR level. It
also allows the normal optimisations and CodeGen improvements to help
out with atomics, instead of using a limited set of possible
instructions..
rdar://problem/
13496295
llvm-svn: 212119
Reid Kleckner [Tue, 1 Jul 2014 18:27:02 +0000 (18:27 +0000)]
clang-cl: Ignore /Zc:inline and /Zc:rvalueCast
These flags enable behavior in MSVC that Clang has by default.
/Zc:inline essentially marks all COMDATs as discardable. In LLVM
parlance, this means using linkonce_odr linkage, which is what we
already do.
llvm-svn: 212117
Sean Silva [Tue, 1 Jul 2014 18:22:32 +0000 (18:22 +0000)]
[docs] Fix a mangled sentence.
Fixes PR20169
llvm-svn: 212116
Sean Silva [Tue, 1 Jul 2014 18:15:00 +0000 (18:15 +0000)]
[docs] Remove stray HTML tag.
Fixes PR20167
llvm-svn: 212115
Adam Nemet [Tue, 1 Jul 2014 18:03:45 +0000 (18:03 +0000)]
[X86] AVX512: Allow writemasks with vpcmp
For now I only updated the _alt variants. The main variants are used by
codegen and that will need a bit more work to trigger.
<rdar://problem/
17492620>
llvm-svn: 212114
Adam Nemet [Tue, 1 Jul 2014 18:03:43 +0000 (18:03 +0000)]
[X86] AVX512: Factor generating the AsmString into avx512_icmp_cc
Adding a writemask variant would require a third asm string to be passed to
the template. Generate the AsmString in the template instead.
No change in X86.td.expanded.
llvm-svn: 212113
Alexey Samsonov [Tue, 1 Jul 2014 18:01:20 +0000 (18:01 +0000)]
[TSan] Equalize the behavior of __tsan_get_allocated_size and user_alloc_usable_size.
The former used to crash with a null deref if it was given a not owned pointer,
while the latter returned 0. Now they both return 0. This is still not the best possible
behavior: it is better to print an error report with a stack trace, pointing
to the error in user code, as we do in ASan.
llvm-svn: 212112
Deepak Panickal [Tue, 1 Jul 2014 17:57:19 +0000 (17:57 +0000)]
This creates a valid Python API for Windows, pending some issues. The changes included are -
- Ported the SWIG wrapper shell scripts to Python so that they would work on Windows too along with other platforms
- Updated CMake handling to fix SWIG errors and manage sym-linking on Windows to liblldb.dll
- More build fixes for Windows
The pending issues are that two Python modules, termios and pexpect are not available on Windows.
These are currently required for the Python command interpreter to be used from within LLDB.
llvm-svn: 212111
Sylvestre Ledru [Tue, 1 Jul 2014 17:24:27 +0000 (17:24 +0000)]
GCC compatibility: Ignore -finput_charset=UTF-8 argument. It is the default in Clang.
Currently, we fail with an error.
Reviewers: rafael
Reviewed By: rafael
Subscribers: rnk, cfe-commits
Differential Revision: http://reviews.llvm.org/D4347
llvm-svn: 212110
Chad Rosier [Tue, 1 Jul 2014 17:23:11 +0000 (17:23 +0000)]
Revert "MachineScheduler: better book-keeping for asserts."
This reverts commit r212088, which is causing a number of spec
failures. Will provide reduced test cases shortly.
PR20057
llvm-svn: 212109
Kevin Enderby [Tue, 1 Jul 2014 17:19:10 +0000 (17:19 +0000)]
Add the -arch flag support to llvm-size like what was done to llvm-nm
to select the slice out of a Mach-O universal file. This also includes
support for -arch all, selecting the host architecture by default from
a universal file and checking if -arch is used with a standard Mach-O
it matches that architecture.
llvm-svn: 212108
Todd Fiala [Tue, 1 Jul 2014 16:30:53 +0000 (16:30 +0000)]
Use native ::pid_t in Linux ProcessMonitor (local debugging).
There were a few places where we were not catching the possibility of negative
error codes in waitpid() calls. This change fixes those remaining after
the llgs branch fixes to ProcessMonitor.
Change by Shawn Best.
llvm-svn: 212107
Quentin Colombet [Tue, 1 Jul 2014 16:23:44 +0000 (16:23 +0000)]
[PeepholeOptimzer] Fix a typo in a comment.
Spotted by Amara Emerson.
llvm-svn: 212106
Benjamin Kramer [Tue, 1 Jul 2014 15:39:32 +0000 (15:39 +0000)]
Remove unused typedef. GCC warns about this.
llvm-svn: 212105
David Majnemer [Tue, 1 Jul 2014 15:26:50 +0000 (15:26 +0000)]
GlobalOpt: Don't swap private for internal linkage
There were transforms whose *intent* was to downgrade the linkage of
external objects to have internal linkage.
However, it fired on things with private linkage as well.
llvm-svn: 212104
David Majnemer [Tue, 1 Jul 2014 15:26:47 +0000 (15:26 +0000)]
GlobalOpt: FileCheck-ize test
No functionality change.
llvm-svn: 212103
Benjamin Kramer [Tue, 1 Jul 2014 14:46:44 +0000 (14:46 +0000)]
Rephrase loop so it doesn't leave unused bools around in Release mode.
llvm-svn: 212102
Rafael Espindola [Tue, 1 Jul 2014 14:34:30 +0000 (14:34 +0000)]
Avoid revocations when possible.
This is a small targeted fix for pr20119. The code needs quiet a bit of
refactoring and I added some FIXMEs about it, but I want to get the testcase
passing first.
llvm-svn: 212101
Quentin Colombet [Tue, 1 Jul 2014 14:33:36 +0000 (14:33 +0000)]
[PeepholeOptimizer] Advanced rewriting of copies to avoid cross register banks
copies.
This patch extends the peephole optimization introduced in r190713 to produce
register-coalescer friendly copies when possible.
This extension taught the existing cross-bank copy optimization how to deal
with the instructions that generate cross-bank copies, i.e., insert_subreg,
extract_subreg, reg_sequence, and subreg_to_reg.
E.g.
b = insert_subreg e, A, sub0 <-- cross-bank copy
...
C = copy b.sub0 <-- cross-bank copy
Would produce the following code:
b = insert_subreg e, A, sub0 <-- cross-bank copy
...
C = copy A <-- same-bank copy
This patch also introduces a new helper class for that: ValueTracker.
This class implements the logic to look through the copy related instructions
and get the related source.
For now, the advanced rewriting is disabled by default as we are lacking the
semantic on target specific instructions to catch the motivating examples.
Related to <rdar://problem/
12702965>.
llvm-svn: 212100
Quentin Colombet [Tue, 1 Jul 2014 14:08:37 +0000 (14:08 +0000)]
[RegAllocGreedy] Provide a flag to disable the local reassignment heuristic.
By default, no functionality change.
Before evicting a local variable, this heuristic tries to find another (set of)
local(s) that can be reassigned to a free color.
In some extreme cases (large basic blocks with tons of local variables), the
compilation time is dominated by the local interference checks that this
heuristic must perform, with no code gen gain.
E.g., the motivating example takes 4 minutes to compile with this heuristic, 12
seconds without.
Improving the situation will likely require to make drastic changes to the
register allocator and/or the interference check framework.
For now, provide this flag to better understand the impact of that heuristic.
<rdar://problem/
17444599>
llvm-svn: 212099
Logan Chien [Tue, 1 Jul 2014 11:47:10 +0000 (11:47 +0000)]
Remove CleanupHackLevel from CGException.
This patch removes the dead code, and refines the
getEHResumeBlock() slightly.
The CleanupHackLevel was a hack to the old exception
handling intrinsics, which have several issues with function
inliner.
Since LLVM 3.0, the new landingpad and resume instructions
are added to LLVM IR. With the new exception handling
mechanism, most of the issues are fixed now. We should
always use these instructions to implement the exception
handling code nowadays, and we don't need the hack any more.
Besides, the `CleanupHackLevel` is a compile-time constant,
thus other cases have been considered as dead code for a while.
llvm-svn: 212097
Simon Atanasyan [Tue, 1 Jul 2014 10:59:09 +0000 (10:59 +0000)]
[Driver][Mips] MIPS ABI names "32" and "64" used as arguments of the "-mabi"
command line option only. Internally we convert them to the "o32" and "n64"
respectively. So we do not need to refer them anywhere after that conversion.
No functional changes.
llvm-svn: 212096
Alp Toker [Tue, 1 Jul 2014 10:47:13 +0000 (10:47 +0000)]
Remove obsolete function TargetRegistry::getClosestTargetForJIT()
This was kept around "for compatibility through 2.6" in 2009 and is not used or
tested.
llvm-svn: 212095
Tim Northover [Tue, 1 Jul 2014 08:41:45 +0000 (08:41 +0000)]
[mach-o]: make the default dylib install-name the output filename.
llvm-svn: 212094
Tim Northover [Tue, 1 Jul 2014 08:15:41 +0000 (08:15 +0000)]
[mach-o] add representation for LC_ID_DYLIB to MachONormalizedFile
It still needs to be tied into BinaryReader, but this allows reasonably
sensible creation of SharedLibrary atoms on MachO.
llvm-svn: 212093
Gerolf Hoflehner [Tue, 1 Jul 2014 05:10:06 +0000 (05:10 +0000)]
Enable test/CodeGen/indirect-goto.c in 64b for local arrays
In 32b mode the reference count for block addresses
is not zero. This prevents inlining and constant
folding and causes the test to fail. Changing
the triple allows runnning the test in 64b mode.
The array in foo2 is now local instead of static until
at lower optimization levels the interprocedural constant
propagator is invoked before the global optimizer.
llvm-svn: 212092
Bob Wilson [Tue, 1 Jul 2014 04:56:06 +0000 (04:56 +0000)]
Temporarily disable the indirect-goto.c test.
llvm r212077 causes this test to fail. We need to reorder some passes and
possibly make other changes to reenable the optimization being tested here.
llvm-svn: 212091
Nikola Smiljanic [Tue, 1 Jul 2014 04:17:53 +0000 (04:17 +0000)]
PR15677 - Crash in template diffing. Check that expression is evaluatable before evaluating it.
llvm-svn: 212090
David Blaikie [Tue, 1 Jul 2014 04:11:45 +0000 (04:11 +0000)]
Revert "DebugInfo: Ensure that all debug location scope chains from instructions within a function, lead to the function itself."
This reverts commit r212085.
This breaks the sanitizer bot... & I thought I'd tried pretty hard not
to do that. Guess I need to try harder.
llvm-svn: 212089
Andrew Trick [Tue, 1 Jul 2014 03:23:13 +0000 (03:23 +0000)]
MachineScheduler: better book-keeping for asserts.
Fixes another test case under PR20057.
llvm-svn: 212088
Alp Toker [Tue, 1 Jul 2014 03:19:50 +0000 (03:19 +0000)]
clang-interpreter: use LLVM interpreter if JIT is unavailable
Update the strategy in r212083 to try JIT first and otherwise fall back to the
interpreter. This gives the best of both worlds and still builds fine with no
targets enabled.
Requires supporting changes from LLVM r212086.
llvm-svn: 212087
Alp Toker [Tue, 1 Jul 2014 03:18:49 +0000 (03:18 +0000)]
ExecutionEngine::create(): fix interpreter fallback when JIT is unavailable
ForceInterpreter=false shouldn't disable the interpreter completely because it
can still be necessary to interpret if the target doesn't support JIT.
No obvious way to test this in LLVM, but this matches what
LLVMCreateExecutionEngineForModule() does and fixes the clang-interpreter
example in the clang source tree which uses the ExecutionEngine.
llvm-svn: 212086
David Blaikie [Tue, 1 Jul 2014 03:11:59 +0000 (03:11 +0000)]
DebugInfo: Ensure that all debug location scope chains from instructions within a function, lead to the function itself.
Originally committed in r211723, reverted in r211724 due to failure
cases found and fixed (ArgumentPromotion: r211872, Inlining: r212065),
and I now believe the invariant actually holds for some reasonable
amount of code (but I'll keep an eye on the buildbots and see what
happens... ).
Original commit message:
PR20038: DebugInfo: Inlined call sites where the caller has debug info
but the call itself has no debug location.
This situation does bad things when inlined, so I've fixed Clang not to
produce inlinable call sites without locations when the caller has debug
info (in the one case where I could find that this occurred). This
updates the PR20038 test case to be what clang now produces, and readds
the assertion that had to be removed due to this bug.
I've also beefed up the debug info verifier to help diagnose these
issues in the future, and I hope to add checks to the inliner to just
assert-fail if it encounters this situation. If, in the future, we
decide we have to cope with this situation, the right thing to do is
probably to just remove all the DebugLocs from the inlined instructions.
llvm-svn: 212085
Alp Toker [Tue, 1 Jul 2014 02:42:02 +0000 (02:42 +0000)]
driver: add link dependency on CodeGen
Fix the build when no targets are enabled. This dependency is incurred by two
unfortunate entries in LinkAllPasses.h included from cc1_main.cpp:
llvm::createJumpInstrTablesPass();
llvm::createCodeGenPreparePass();
llvm-svn: 212084
Alp Toker [Tue, 1 Jul 2014 02:41:55 +0000 (02:41 +0000)]
clang-interpreter: interpret instead of JITing
Fixes the build when no targets are selected, or no native target is built.
This also better matches up with the description/title of the example and
demonstrates how clang can be used to run C++ on constrained environments
without file IO or executable memory permissions (e.g. iOS apps).
A comment is added explaining how to extend the demo with JIT support as
needed.
llvm-svn: 212083
Alexey Samsonov [Tue, 1 Jul 2014 01:38:52 +0000 (01:38 +0000)]
Add the way to disable MSan unit tests for _mm_* intrinsics
llvm-svn: 212082
Reid Kleckner [Tue, 1 Jul 2014 00:42:47 +0000 (00:42 +0000)]
Fix .seh_stackalloc 0
seh_stackalloc 0 is not representable in Win64 SEH info, so emitting it
is a bug.
Reviewers: rnk
Differential Revision: http://reviews.llvm.org/D4334
Patch by Vadim Chugunov!
llvm-svn: 212081
Johannes Doerfert [Tue, 1 Jul 2014 00:32:29 +0000 (00:32 +0000)]
[FIX] Don't consider reductions which are partially outside the SCoP
+ Test case
llvm-svn: 212080
David Majnemer [Tue, 1 Jul 2014 00:30:56 +0000 (00:30 +0000)]
GlobalOpt: Handle non-zero offsets for aliases
An alias with an aliasee of a non-zero GEP is not trivially replacable
with it's aliasee.
llvm-svn: 212079
David Majnemer [Tue, 1 Jul 2014 00:30:52 +0000 (00:30 +0000)]
IR: Add a helper to check for LinkOnceODRLinkage
llvm-svn: 212078
Gerolf Hoflehner [Tue, 1 Jul 2014 00:19:34 +0000 (00:19 +0000)]
Suppress inlining when the block address is taken
Inlining functions with block addresses can cause many problem and requires a
rich infrastructure to support including escape analysis. At this point the
safest approach to address these problems is by blocking inlining from
happening.
Background:
There have been reports on Ruby segmentation faults triggered by inlining
functions with block addresses like
//Ruby code snippet
vm_exec_core() {
finish_insn_seq_0 = &&INSN_LABEL_finish;
INSN_LABEL_finish:
;
}
This kind of scenario can also happen when LLVM picks a subset of blocks for
inlining, which is the case with the actual code in the Ruby environment.
LLVM suppresses inlining for such functions when there is an indirect branch.
The attached patch does so even when there is no indirect branch. Note that
user code like above would not make much sense: using the global for jumping
across function boundaries would be illegal.
Why was there a segfault:
In the snipped above the block with the label is recognized as dead So it is
eliminated. Instead of a block address the cloner stores a constant (sic!) into
the global resulting in the segfault (when the global is used in a goto).
Why had it worked in the past then:
By luck. In older versions vm_exec_core was also inlined but the label address
used was the block label address in vm_exec_core. So the global jump ended up
in the original function rather than in the caller which accidentally happened
to work.
Test case ./tools/clang/test/CodeGen/indirect-goto.c will fail as a result
of this commit.
rdar://
17245966
llvm-svn: 212077
Zachary Turner [Tue, 1 Jul 2014 00:18:46 +0000 (00:18 +0000)]
Fix Windows build after llgs upstream.
With _HAS_EXCEPTIONS=0, Windows' version of <thread> will fail to
compile because it calls __uncaught_exception(), which is compiled
out due to _HAS_EXCEPTIONS=0. This just creates a stub version
of __uncaught_exception() which always fails.
llvm-svn: 212076
Duncan P. N. Exon Smith [Tue, 1 Jul 2014 00:05:37 +0000 (00:05 +0000)]
AArch64: Follow-up to r212073
In r212073 I missed a call of `use_begin()` that assumed the wrong
semantics. It's not clear to me at all what this code does without the
fix, so I'm not sure how to write a testcase.
llvm-svn: 212075
Todd Fiala [Mon, 30 Jun 2014 23:51:35 +0000 (23:51 +0000)]
Fixup Windows build breaks for the llgs upstream.
Also moves NativeRegisterContextLinux* files into the Linux directory.
These, like NativeProcessLinux, should only be built on Linux or a cross
compiler with proper headers.
llvm-svn: 212074
Duncan P. N. Exon Smith [Mon, 30 Jun 2014 23:42:14 +0000 (23:42 +0000)]
AArch64: Actually do address type promotion
AArch64AddressTypePromotion was doing nothing because it was using the
old semantics of `Use` and `uses()`, when it really wanted to get at the
`users()`.
llvm-svn: 212073
Nick Kledzik [Mon, 30 Jun 2014 22:57:33 +0000 (22:57 +0000)]
[mach-o] improve errors when mixing architectures
llvm-svn: 212072
Alexey Samsonov [Mon, 30 Jun 2014 22:40:58 +0000 (22:40 +0000)]
Fix apparent thinko in r209744: allocator stats can be zero
llvm-svn: 212071
Marshall Clow [Mon, 30 Jun 2014 21:27:51 +0000 (21:27 +0000)]
Fix libc++ bug #20039: 'Constructing std::function from empty compatible std::function results in half-empty state' Thanks to Agustin Berge for the report, and for his and Eric Fiselier's work on a fix.
llvm-svn: 212070
Todd Fiala [Mon, 30 Jun 2014 21:05:18 +0000 (21:05 +0000)]
Add lldb-gdbserver support for Linux x86_64.
This change brings in lldb-gdbserver (llgs) specifically for Linux x86_64.
(More architectures coming soon).
Not every debugserver option is covered yet. Currently
the lldb-gdbserver command line can start unattached,
start attached to a pid (process-name attach not supported yet),
or accept lldb attaching and launching a process or connecting
by process id.
The history of this large change can be found here:
https://github.com/tfiala/lldb/tree/dev-tfiala-native-protocol-linux-x86_64
Until mid/late April, I was not sharing the work and continued
to rebase it off of head (developed via id tfiala@google.com). I switched over to
user todd.fiala@gmail.com in the middle, and once I went to github, I did
merges rather than rebasing so I could share with others.
llvm-svn: 212069
Nick Kledzik [Mon, 30 Jun 2014 20:44:47 +0000 (20:44 +0000)]
[mach-o] x86_64 relocation code review fixes
llvm-svn: 212068
Reid Kleckner [Mon, 30 Jun 2014 20:44:28 +0000 (20:44 +0000)]
Convert some byval argpromotion grep tests to FileCheck
Surprisingly, the i32* byval parameter is not transformed by
argpromotion.
llvm-svn: 212067
Ehsan Akhgari [Mon, 30 Jun 2014 20:36:33 +0000 (20:36 +0000)]
Do not define __STRICT_ANSI__ in clang-cl
llvm-svn: 212066
David Blaikie [Mon, 30 Jun 2014 20:30:39 +0000 (20:30 +0000)]
DebugInfo: Preserve debug location information when transforming a call into an invoke during inlining.
This both improves basic debug info quality, but also fixes a larger
hole whenever we inline a call/invoke without a location (debug info for
the entire inlining is lost and other badness that the debug info
emission code is currently working around but shouldn't have to).
llvm-svn: 212065
Alexey Samsonov [Mon, 30 Jun 2014 20:27:16 +0000 (20:27 +0000)]
[UBSan] Don't link UBSan runtime into shared libraries.
It used to be a feature of UBSan (it could sanitize a standalone
shared object instead of the whole program), but now it causes
more problems, like PR20165.
llvm-svn: 212064
David Blaikie [Mon, 30 Jun 2014 20:26:12 +0000 (20:26 +0000)]
Remove unnecessary datalayout string from a test case.
llvm-svn: 212063
Reid Kleckner [Mon, 30 Jun 2014 20:12:59 +0000 (20:12 +0000)]
Speculatively fix some code handling Power64 MachO files
MSVC was warning on a switch containing only default labels. In this
instance, it looks like it uncovered a real bug. :)
llvm-svn: 212062
Reid Kleckner [Mon, 30 Jun 2014 20:12:27 +0000 (20:12 +0000)]
msan: Stop stripping the 'tail' modifier off of calls
This probably isn't necessary since msan started to unpoison the return
value shadow memory before all calls.
llvm-svn: 212061
Ben Langmuir [Mon, 30 Jun 2014 20:04:14 +0000 (20:04 +0000)]
Consider module depedencies when checking a preamble in libclang
Add module dependencies (header files, module map files) to the list of
files to check when deciding whether to rebuild a preamble. That fixes
using preambles with module imports so long as they are in
non-overridden files.
My intent is to use to unify the existing dependency collectors to the
new “DependencyCollectory” interface from this commit, starting with the
DependencyFileGenerator.
llvm-svn: 212060
Ed Maste [Mon, 30 Jun 2014 20:03:02 +0000 (20:03 +0000)]
objdump: Add test for ELF file with no section table
This is a test for the fix in r211904.
Differential Revision: http://reviews.llvm.org/D4349
llvm-svn: 212059
Ehsan Akhgari [Mon, 30 Jun 2014 19:56:37 +0000 (19:56 +0000)]
Use the newly added FindInEnvPath helper in clang
llvm-svn: 212058
Ehsan Akhgari [Mon, 30 Jun 2014 19:54:20 +0000 (19:54 +0000)]
Refactor the code in clang to find a file in a PATH like environment variable into a helper function
llvm-svn: 212057
Alp Toker [Mon, 30 Jun 2014 18:57:16 +0000 (18:57 +0000)]
Fix 'platform-specific' hyphenations
llvm-svn: 212056
Alp Toker [Mon, 30 Jun 2014 18:57:04 +0000 (18:57 +0000)]
Build fix for systems without futimes/futimens
Some versions of Android don't have futimes/futimens and this code wasn't
updated during the recent errc refactoring.
Patch by Luqman Aden!
llvm-svn: 212055
Kevin Enderby [Mon, 30 Jun 2014 18:45:23 +0000 (18:45 +0000)]
Add the -arch flag support to llvm-nm to select the slice out of a Mach-O
universal file. This also includes support for -arch all, selecting the host
architecture by default from a universal file and checking if -arch is used
with a standard Mach-O it matches that architecture.
llvm-svn: 212054
Andrea Di Biagio [Mon, 30 Jun 2014 18:23:58 +0000 (18:23 +0000)]
[x86] Add Clang support for intrinsic __rdpmc.
This patch adds intrinsic __rdpmc to header file 'ia32intrin.h'.
Intrinsic __rdmpc can be used to read performance monitoring counters. It is
implemented as a direct call to __builtin_ia32_rdpmc.
It takes as input a value representing the index of the performance counter to
read. The value of the performance counter is then returned as a unsigned
64-bit quantity.
llvm-svn: 212053
Matt Arsenault [Mon, 30 Jun 2014 17:55:48 +0000 (17:55 +0000)]
R600: Move mul combine to separate function
llvm-svn: 212052
Matt Arsenault [Mon, 30 Jun 2014 17:37:17 +0000 (17:37 +0000)]
R600: Remove unused declarations leftover from AMDIL
llvm-svn: 212051
Adrian Prantl [Mon, 30 Jun 2014 17:17:35 +0000 (17:17 +0000)]
Debug info: split out complex DIVariable address expressions into a
separate MDNode so they can be uniqued via folding set magic. To conserve
space, DIVariable nodes are still variable-length, with the last two
fields being optional.
No functional change.
http://reviews.llvm.org/D3526
llvm-svn: 212050
Andrea Di Biagio [Mon, 30 Jun 2014 17:14:21 +0000 (17:14 +0000)]
[X86] Add support for builtin to read performance monitoring counters.
This patch adds support for a new builtin instruction called
__builtin_ia32_rdpmc.
Builtin '__builtin_ia32_rdpmc' is defined as a 'GCC builtin'; on X86, it can
be used to read performance monitoring counters. It takes as input the index
of the performance counter to read, and returns the value of the specified
performance counter as a 64-bit number.
Calls to this new builtin will map to instruction RDPMC.
The index in input to the builtin call is moved to register %ECX. The result
of the builtin call is the value of the specified performance counter (RDPMC
would return that quantity in registers RDX:RAX).
This patch:
- Adds builtin int_x86_rdpmc as a GCCBuiltin;
- Adds a new x86 DAG node called 'RDPMC_DAG';
- Teaches how to lower this new builtin;
- Adds an ISel pattern to select instruction RDPMC;
- Fixes the definition of instruction RDPMC adding %RAX and %RDX as
implicit definitions, and adding %ECX as implicit use;
- Adds a LLVM test to verify that the new builtin is correctly selected.
llvm-svn: 212049
Peter Zotov [Mon, 30 Jun 2014 16:53:53 +0000 (16:53 +0000)]
[OCaml] Documentation improvements.
llvm-svn: 212048
Ben Langmuir [Mon, 30 Jun 2014 16:10:15 +0000 (16:10 +0000)]
Removed unused typedef for recursive_directory_iterator
llvm-svn: 212047
Marshall Clow [Mon, 30 Jun 2014 15:35:09 +0000 (15:35 +0000)]
Fix a typo in the noexcept calculation for __compressed_pair::swap. Thanks to EricWF for the bug report and the fix.
llvm-svn: 212046
Chad Rosier [Mon, 30 Jun 2014 15:03:00 +0000 (15:03 +0000)]
[AArch64] Unsized types don't specify an alignment.
PR20109
llvm-svn: 212045
Chad Rosier [Mon, 30 Jun 2014 14:51:14 +0000 (14:51 +0000)]
[AArch64] Convert mul x, -(pow2 +/- 1) to shift + add/sub.
The combine for mul x, pow2 +/- 1 is unchanged. Test cases for
both combines as well as mul x, pow2 have been added as well.
llvm-svn: 212044
Tim Northover [Mon, 30 Jun 2014 14:40:57 +0000 (14:40 +0000)]
macho-dump: add code to print LC_ID_DYLIB load commands.
I want to check them in lld.
llvm-svn: 212043
Alexander Kornienko [Mon, 30 Jun 2014 14:29:03 +0000 (14:29 +0000)]
Initialize ClangTidyMessage::FileOffset field to avoid unitialized variable access when sorting errors on output.
llvm-svn: 212042
Daniel Jasper [Mon, 30 Jun 2014 13:54:27 +0000 (13:54 +0000)]
clang-format: Support member function reference qualifiers.
Before:
string // break
operator()() &
{}
After:
string // break
operator()() & {}
llvm-svn: 212041
Daniel Jasper [Mon, 30 Jun 2014 13:44:47 +0000 (13:44 +0000)]
clang-format: Improve expression heuristics.
Upon encountering a binary operator inside parentheses, assume that the
parentheses contain an expression.
Before:
MACRO('0' <= c&& c <= '9');
After:
MACRO('0' <= c && c <= '9');
llvm-svn: 212040
Aaron Ballman [Mon, 30 Jun 2014 13:43:04 +0000 (13:43 +0000)]
Fixing a few typos in the documentation.
llvm-svn: 212039
Daniel Jasper [Mon, 30 Jun 2014 13:24:54 +0000 (13:24 +0000)]
clang-format: [JS] support free-standing functions again.
This worked initially but was broken by r210887.
Before:
function outer1(a, b) {
function inner1(a, b) { return a; } inner1(a, b);
} function outer2(a, b) { function inner2(a, b) { return a; } inner2(a, b); }
After:
function outer1(a, b) {
function inner1(a, b) { return a; }
inner1(a, b);
}
function outer2(a, b) {
function inner2(a, b) { return a; }
inner2(a, b);
}
Thanks to Adam Strzelecki for working on this.
llvm-svn: 212038
Logan Chien [Mon, 30 Jun 2014 12:35:29 +0000 (12:35 +0000)]
Revert the LSDA change to scan_eh_tab.
This commit reverts the LSDA-related change in r211745.
The r211745 adds a new argument to scan_eh_tab(), i.e. lsda.
However, IMO, calling _Unwind_GetLanguageSpecificData() directly in
scan_eh_tab() was more intuitive and reduces several function call
to _Unwind_GetLanguageSpecificData() in __cxx_personality_v0().
llvm-svn: 212037