Nikita Popov [Sun, 16 Dec 2018 17:51:32 +0000 (17:51 +0000)]
[InstCombined] Add more tests for cttz/ctlz + icmp; NFC
Test cases other than icmp with the bitwidth.
llvm-svn: 349310
Nikita Popov [Sun, 16 Dec 2018 17:45:25 +0000 (17:45 +0000)]
[InstCombine] Add additional saturating add/sub + icmp tests; NFC
These test comparisons with saturating add/sub in non-canonical
form.
llvm-svn: 349309
Aaron Puchert [Sun, 16 Dec 2018 16:19:11 +0000 (16:19 +0000)]
Thread safety analysis: Avoid intermediate copies [NFC]
The main reason is to reduce the number of constructor arguments though,
especially since many of them had the same type.
llvm-svn: 349308
Sanjay Patel [Sun, 16 Dec 2018 16:14:42 +0000 (16:14 +0000)]
[InstCombine] regenerate test checks; NFC
llvm-svn: 349307
Sanjay Patel [Sun, 16 Dec 2018 15:50:50 +0000 (15:50 +0000)]
[InstCombine] add tests for vector widening transforms (PR40032); NFC
llvm-svn: 349306
Michal Gorny [Sun, 16 Dec 2018 15:12:06 +0000 (15:12 +0000)]
[test] [support] Use socket()+bind() to create unix sockets portably
Replace the mknod() call with socket() + bind() for creating unix
sockets. The mknod() method is not portable and does not work
on NetBSD while binding the socket should work on all systems supporting
unix sockets.
Differential Revision: https://reviews.llvm.org/D55576
llvm-svn: 349305
Sanjay Patel [Sun, 16 Dec 2018 15:05:48 +0000 (15:05 +0000)]
[x86] increment/decrement constant vector with min/max in vsetcc lowering (PR39859)
This is part of fixing PR39859:
https://bugs.llvm.org/show_bug.cgi?id=39859
We have a crippled vector ISA, so we have to invert a typical fold and create min/max here.
As discussed in the bug report, we can probably do better by using saturating subtract when
it's available, but we should have this improvement for the min/max patterns regardless.
Alive proofs:
https://rise4fun.com/Alive/zsf
https://rise4fun.com/Alive/Qrl
Differential Revision: https://reviews.llvm.org/D55515
llvm-svn: 349304
Sanjay Patel [Sun, 16 Dec 2018 14:57:04 +0000 (14:57 +0000)]
[DAGCombiner] allow hoisting vector bitwise logic ahead of truncates
The transform performs a bitwise logic op in a wider type followed by
truncate when both inputs are truncated from the same source type:
logic_op (truncate x), (truncate y) --> truncate (logic_op x, y)
There are a bunch of other checks that should prevent doing this when
it might be harmful.
We already do this transform for scalars in this spot. The vector
limitation was shared with a check for the case when the operands are
extended. I'm not sure if that limit is needed either, but that would
be a separate patch.
Differential Revision: https://reviews.llvm.org/D55448
llvm-svn: 349303
Sylvestre Ledru [Sun, 16 Dec 2018 14:47:16 +0000 (14:47 +0000)]
Update the list of platforms & archs
llvm-svn: 349302
Sylvestre Ledru [Sun, 16 Dec 2018 14:19:39 +0000 (14:19 +0000)]
Use backquotes to avoid a sphinx unexpected error:
Unknown target name: "bootstrap".
llvm-svn: 349301
Aaron Puchert [Sun, 16 Dec 2018 14:15:30 +0000 (14:15 +0000)]
Thread safety analysis: Allow scoped releasing of capabilities
Summary:
The pattern is problematic with C++ exceptions, and not as widespread as
scoped locks, but it's still used by some, for example Chromium.
We are a bit stricter here at join points, patterns that are allowed for
scoped locks aren't allowed here. That could still be changed in the
future, but I'd argue we should only relax this if people ask for it.
Fixes PR36162.
Reviewers: aaron.ballman, delesley, pwnall
Reviewed By: delesley, pwnall
Subscribers: pwnall, cfe-commits
Differential Revision: https://reviews.llvm.org/D52578
llvm-svn: 349300
Sylvestre Ledru [Sun, 16 Dec 2018 14:04:10 +0000 (14:04 +0000)]
Document the usage of BOOTSTRAP_XXX with stage2 builds
llvm-svn: 349299
Simon Pilgrim [Sun, 16 Dec 2018 13:33:37 +0000 (13:33 +0000)]
[SelectionDAG] Add FSHL/FSHR support to computeKnownBits
Also exposes an issue in DAGCombiner::visitFunnelShift where we were assuming the shift amount had the result type (after legalization it'll have the targets shift amount type).
llvm-svn: 349298
Simon Pilgrim [Sun, 16 Dec 2018 12:15:31 +0000 (12:15 +0000)]
[X86] Add computeKnownBits tests for funnel shift intrinsics
llvm-svn: 349297
Kamil Rytarowski [Sun, 16 Dec 2018 10:24:06 +0000 (10:24 +0000)]
Improve the comment in previous
llvm-svn: 349296
Kamil Rytarowski [Sun, 16 Dec 2018 10:22:30 +0000 (10:22 +0000)]
Expand TSan sysroot workaround to NetBSD
https://bugs.llvm.org/show_bug.cgi?id=26651
llvm-svn: 349295
Michal Gorny [Sun, 16 Dec 2018 09:18:31 +0000 (09:18 +0000)]
[test] [ctime] Ignore -Wformat-zero-length warnings
Explicitly disable the -Wformat-zero-length diagnostic when running
ctime tests, since one of the test cases passes zero-length format
string to strftime(). When strftime() is appropriately decorated
with __attribute__(format, ...), this caused the test to fail because
of this warning (e.g. on NetBSD).
Differential Revision: https://reviews.llvm.org/D55661
llvm-svn: 349294
Michal Gorny [Sun, 16 Dec 2018 09:18:26 +0000 (09:18 +0000)]
[regex] Use distinct __regex_word on NetBSD
NetBSD defines character classes up to 0x2000. Use 0x8000 as a safe
__regex_word that hopefully will not collide with other values
in the foreseeable future.
Differential Revision: https://reviews.llvm.org/D55657
llvm-svn: 349293
Nico Weber [Sun, 16 Dec 2018 02:32:20 +0000 (02:32 +0000)]
[gn build] Merge r349167
llvm-svn: 349291
Nico Weber [Sun, 16 Dec 2018 02:29:02 +0000 (02:29 +0000)]
[gn build] Add build files for obj2yaml, yaml2obj, and lib/ObjectYAML
The two executables are needed by check-lld.
Differential Revision: https://reviews.llvm.org/D55687
llvm-svn: 349290
Nico Weber [Sun, 16 Dec 2018 02:27:10 +0000 (02:27 +0000)]
[gn build] Add build files for llvm-as, llvm-dis, llvm-dwarfdump, llvm-mc, FileCheck, count, not
These executables are needed by check-lld.
Differential Revision: https://reviews.llvm.org/D55688
llvm-svn: 349289
Kristof Umann [Sun, 16 Dec 2018 00:00:18 +0000 (00:00 +0000)]
Fix a lit test failure after MallocChecker changes
llvm-svn: 349288
Craig Topper [Sat, 15 Dec 2018 22:52:57 +0000 (22:52 +0000)]
[X86] Autogenerate complete checks. NFC
llvm-svn: 349287
Simon Pilgrim [Sat, 15 Dec 2018 21:11:49 +0000 (21:11 +0000)]
[X86] Begin cleaning up combineOr -> SHLD/SHRD. NFCI.
In preparation for converting to funnel shifts.
llvm-svn: 349286
Simon Pilgrim [Sat, 15 Dec 2018 19:43:44 +0000 (19:43 +0000)]
[X86] Lower to SHLD/SHRD on slow machines for optsize
Use consistent rules for when to lower to SHLD/SHRD for slow machines - fixes a weird issue where funnel shift gets expanded but then X86ISelLowering's combineOr sees the optsize and combines to SHLD/SHRD, but now with the modulo amount guard......
llvm-svn: 349285
Simon Pilgrim [Sat, 15 Dec 2018 19:32:26 +0000 (19:32 +0000)]
[X86] Add optsize SHLD/SHRD tests
llvm-svn: 349284
Kristof Umann [Sat, 15 Dec 2018 18:41:37 +0000 (18:41 +0000)]
[analyzer][MallocChecker] Improve warning messages on double-delete errors
Differential Revision: https://reviews.llvm.org/D54834
llvm-svn: 349283
Jason Molenda [Sat, 15 Dec 2018 18:40:38 +0000 (18:40 +0000)]
Update the vFile:open: description to note that the flags
in the packet are lldb enum values, not the open(2) oflags --
forgot about that wrinkle. Also added a comment to File.h
noting that the existing values cannot be modified or we'll
have a compatibilty break with any alternative platform
implementations, or older versions of lldb-server.
llvm-svn: 349282
Kristof Umann [Sat, 15 Dec 2018 18:34:00 +0000 (18:34 +0000)]
[analyzer][MallocChecker][NFC] Document and reorganize some functions
This patch merely reorganizes some things, and features no functional change.
In detail:
* Provided documentation, or moved existing documentation in more obvious
places.
* Added dividers. (the //===----------===// thing).
* Moved getAllocationFamily, printAllocDeallocName, printExpectedAllocName and
printExpectedDeallocName in the global namespace on top of the file where
AllocationFamily is declared, as they are very strongly related.
* Moved isReleased and MallocUpdateRefState near RefState's definition for the
same reason.
* Realloc modeling was very poor in terms of variable and structure naming, as
well as documentation, so I renamed some of them and added much needed docs.
* Moved function IdentifierInfos to a separate struct, and moved isMemFunction,
isCMemFunction adn isStandardNewDelete inside it. This makes the patch affect
quite a lot of lines, should I extract it to a separate one?
* Moved MallocBugVisitor out of MallocChecker.
* Preferred switches to long else-if branches in some places.
* Neatly organized some RUN: lines.
Differential Revision: https://reviews.llvm.org/D54823
llvm-svn: 349281
Kristof Umann [Sat, 15 Dec 2018 18:11:49 +0000 (18:11 +0000)]
[analyzer][NFC] Merge ClangCheckerRegistry to CheckerRegistry
Now that CheckerRegistry lies in Frontend, we can finally eliminate
ClangCheckerRegistry. Fortunately, this also provides us with a
DiagnosticsEngine, so I went ahead and removed some parameters from it's
methods.
Differential Revision: https://reviews.llvm.org/D54437
llvm-svn: 349280
Kristof Umann [Sat, 15 Dec 2018 18:03:15 +0000 (18:03 +0000)]
Link examples/clang-interpreter against clangSerialization
llvm-svn: 349279
Kristof Umann [Sat, 15 Dec 2018 17:12:38 +0000 (17:12 +0000)]
Fix a compilation error in examples/
llvm-svn: 349278
Kamil Rytarowski [Sat, 15 Dec 2018 16:51:35 +0000 (16:51 +0000)]
Add NetBSD support in needsRuntimeRegistrationOfSectionRange.
Use linker script magic to get data/cnts/name start/end.
llvm-svn: 349277
Kamil Rytarowski [Sat, 15 Dec 2018 16:32:41 +0000 (16:32 +0000)]
Register kASan shadow offset for NetBSD/amd64
The NetBSD x86_64 kernel uses the 0xdfff900000000000 shadow
offset.
llvm-svn: 349276
Kristof Umann [Sat, 15 Dec 2018 16:23:51 +0000 (16:23 +0000)]
[analyzer][NFC] Move CheckerRegistry from the Core directory to Frontend
ClangCheckerRegistry is a very non-obvious, poorly documented, weird concept.
It derives from CheckerRegistry, and is placed in lib/StaticAnalyzer/Frontend,
whereas it's base is located in lib/StaticAnalyzer/Core. It was, from what I can
imagine, used to circumvent the problem that the registry functions of the
checkers are located in the clangStaticAnalyzerCheckers library, but that
library depends on clangStaticAnalyzerCore. However, clangStaticAnalyzerFrontend
depends on both of those libraries.
One can make the observation however, that CheckerRegistry has no place in Core,
it isn't used there at all! The only place where it is used is Frontend, which
is where it ultimately belongs.
This move implies that since
include/clang/StaticAnalyzer/Checkers/ClangCheckers.h only contained a single function:
class CheckerRegistry;
void registerBuiltinCheckers(CheckerRegistry ®istry);
it had to re purposed, as CheckerRegistry is no longer available to
clangStaticAnalyzerCheckers. It was renamed to BuiltinCheckerRegistration.h,
which actually describes it a lot better -- it does not contain the registration
functions for checkers, but only those generated by the tblgen files.
Differential Revision: https://reviews.llvm.org/D54436
llvm-svn: 349275
Kristof Umann [Sat, 15 Dec 2018 15:44:05 +0000 (15:44 +0000)]
[analyzer] Prefer returns values to out-params in CheckerRegistry.cpp
Renaming collectCheckers to getEnabledCheckers
Changing the functionality to acquire all enabled checkers, rather then collect
checkers for a specific CheckerOptInfo (for example, collecting all checkers for
{ "core", true }, which meant enabling all checkers from the core package, which
was an unnecessary complication).
Removing CheckerOptInfo, instead of storing whether the option was claimed via a
field, we handle errors immediately, as getEnabledCheckers can now access a
DiagnosticsEngine. Realize that the remaining information it stored is directly
accessible through AnalyzerOptions.CheckerControlList.
Fix a test with -analyzer-disable-checker -verify accidentally left in.
llvm-svn: 349274
Dinar Temirbulatov [Sat, 15 Dec 2018 14:37:01 +0000 (14:37 +0000)]
[CodeGen] Enhance machine PHIs optimization
Summary:
Make machine PHIs optimization to work for single value register taken from
several different copies. This is the first step to fix PR38917. This change
allows to get rid of redundant PHIs (see opt_phis2.mir test) to make
the subsequent optimizations (like CSE) possible and simpler.
For instance, before this patch the code like this:
%b = COPY %z
...
%a = PHI %bb1, %a; %bb2, %b
could be optimized to:
%a = %b
but the code like this:
%c = COPY %z
...
%b = COPY %z
...
%a = PHI %bb1, %a; %bb2, %b; %bb3, %c
would remain unchanged.
With this patch the latter case will be optimized:
%a = %z```.
Committed on behalf of: Anton Afanasyev anton.a.afanasyev@gmail.com
Reviewers: RKSimon, MatzeB
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D54839
llvm-svn: 349271
Simon Pilgrim [Sat, 15 Dec 2018 14:23:18 +0000 (14:23 +0000)]
Regenerate neon copy tests. NFCI.
llvm-svn: 349270
Pavel Labath [Sat, 15 Dec 2018 13:49:25 +0000 (13:49 +0000)]
lldb-test: Improve newline handling
Summary:
Previously lldb-test's LinePrinter would output the indentation spaces
even on completely empty lines. This is not nice, as trailing spaces get
flagged as errors in some tools/editors, and it prevents FileCheck's
CHECK-EMPTY from working.
Equally annoying was the fact that the LinePrinter did not terminate
it's output with a newline (instead it would leave the unterminated hanging
indent from the last NewLine() command), which meant that the shell prompt
following the lldb-test command came out wrong.
This fixes both issues by changing how newlines are handled. NewLine(),
which was ending the previous line ('\n') *and* begging the next line by
printing the indent, is now "demoted" to just printing literal "\n".
Instead, lines are now delimited via a helper Line object, which makes
sure the line is indented and terminated in an RAII fashion. The typical
usage would be:
Printer.line() << "This text will be indented and terminated";
If one needs to do more work than it will fit into a single statement,
one can also assign the result of the line() function to a local
variable. The line will then be terminated when that object goes out of
scope.
Reviewers: zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D55597
llvm-svn: 349269
Pavel Labath [Sat, 15 Dec 2018 13:45:38 +0000 (13:45 +0000)]
ELF: more section creation cleanup
Summary:
This patch attempts to move as much code as possible out of the
CreateSections function to make room for future improvements there. Some
of this may be slightly over-engineered (VMAddressProvider), but I
wanted to keep the logic of this function very simple, because once I
start taking segment headers into acount (as discussed in D55356), the
function is going to grow significantly.
While in there, I also added tests for various bits of functionality.
This should be NFC, except that I changed the order of hac^H^Heuristicks
for determining section type slightly. Previously, name-based deduction
(.symtab -> symtab) would take precedence over type-based (SHT_SYMTAB ->
symtab) one. In fact we would assert if we ran into a .text section with
type SHT_SYMTAB. Though unlikely to matter in practice, this order
seemed wrong to me, so I have inverted it.
Reviewers: clayborg, krytarowski, espindola
Subscribers: emaste, arichardson, lldb-commits
Differential Revision: https://reviews.llvm.org/D55706
llvm-svn: 349268
Pavel Labath [Sat, 15 Dec 2018 13:38:16 +0000 (13:38 +0000)]
Remove /proc/pid/maps parsing code from NativeProcessLinux
A utility function doing this was added in r349182, so use that instead.
llvm-svn: 349267
Gabor Horvath [Sat, 15 Dec 2018 13:20:33 +0000 (13:20 +0000)]
[analyzer] Assume that we always have a SubEngine available
The removed codepath was dead.
Differential Revision: https://reviews.llvm.org/D55697
llvm-svn: 349266
Simon Pilgrim [Sat, 15 Dec 2018 12:25:22 +0000 (12:25 +0000)]
Fix -Wunused-variable warning. NFCI.
llvm-svn: 349265
Simon Pilgrim [Sat, 15 Dec 2018 11:36:36 +0000 (11:36 +0000)]
[TargetLowering] Add ISD::OR + ISD::XOR handling to SimplifyDemandedVectorElts
Differential Revision: https://reviews.llvm.org/D55600
llvm-svn: 349264
Kamil Rytarowski [Sat, 15 Dec 2018 10:42:14 +0000 (10:42 +0000)]
Enable test/msan/pthread_getname_np.cc for NetBSD
llvm-svn: 349263
Kamil Rytarowski [Sat, 15 Dec 2018 10:41:55 +0000 (10:41 +0000)]
Enable SANITIZER_INTERCEPT_PTHREAD_GETNAME_NP for NetBSD
llvm-svn: 349262
Nikita Popov [Sat, 15 Dec 2018 10:37:01 +0000 (10:37 +0000)]
[InstSimplify] Add tests for saturating add/sub + icmp; NFC
If a saturating add/sub with a constant operand is compared to
another constant, we should be able to determine that the condition
is always true/false in some cases (but currently don't).
llvm-svn: 349261
Roman Lebedev [Sat, 15 Dec 2018 09:23:39 +0000 (09:23 +0000)]
[OpenMP] Fixes for LIBOMP_OMP_VERSION=45/40
Summary:
I have discovered this because i wanted to experiment with
building static libomp (with openmp-4.0 support only)
for debugging purposes.
There are three kinds of problems here:
1. `__kmp_compare_and_store_acq()` simply does not exist.
It was added in D47903 by @jlpeyton.
I'm guessing `__kmp_atomic_compare_store_acq()` was meant.
2. In `__kmp_is_ticket_lock_initialized()`,
`lck->lk.initialized` is `std::atomic<bool>`,
while `lck` is `kmp_ticket_lock_t *`.
Naturally, they can't be equality-compared.
Either, it should return the value read from `lck->lk.initialized`,
or do what `__kmp_is_queuing_lock_initialized()` does,
compare the passed pointer with the field in the struct
pointed by the pointer. I think the latter is correct-er choice here.
3. Tests were not versioned.
They assume that `LIBOMP_OMP_VERSION` is at the latest version.
This does not touch LIBOMP_OMP_VERSION=30. That is still broken.
Reviewers: jlpeyton, Hahnfeld, AndreyChurbanov
Reviewed By: AndreyChurbanov
Subscribers: guansong, jfb, openmp-commits, jlpeyton
Tags: #openmp
Differential Revision: https://reviews.llvm.org/D55496
llvm-svn: 349260
Fangrui Song [Sat, 15 Dec 2018 08:54:06 +0000 (08:54 +0000)]
[libclang] Add dependency on clangSerialization to unbreak -DBUILD_SHARED_LIBS=1 build after rC349237
Frontend headers have undefined reference on the symbol `clang::PCHContainerOperations::PCHContainerOperations()` through some shared_ptr usage. Any dependents will get the undefined reference which can only be resolved by explicit dependency on clangSerialization (due to -z defs).
llvm-svn: 349259
Fangrui Song [Sat, 15 Dec 2018 08:44:47 +0000 (08:44 +0000)]
[mips] Fix test typo in rL348914
RUN; -> RUN:
llvm-svn: 349258
Kamil Rytarowski [Sat, 15 Dec 2018 08:25:25 +0000 (08:25 +0000)]
Fix internal_sleep() for NetBSD
This is a follow up of a similar fix for Linux from D55692.
llvm-svn: 349257
Martin Storsjo [Sat, 15 Dec 2018 08:08:11 +0000 (08:08 +0000)]
[MinGW] Produce a vtable and RTTI for dllexported classes without a key function
This matches what GCC does in these situations.
This fixes compiling Qt in debug mode. In release mode, references to
the vtable of this particular class ends up optimized away, but in debug
mode, the compiler creates references to the vtable, which is expected
to be dllexported from a different DLL. Make sure the dllexported
version actually ends up emitted.
Differential Revision: https://reviews.llvm.org/D55698
llvm-svn: 349256
Peter Collingbourne [Sat, 15 Dec 2018 07:08:04 +0000 (07:08 +0000)]
Fix typo in test cases as well.
llvm-svn: 349255
Peter Collingbourne [Sat, 15 Dec 2018 07:06:24 +0000 (07:06 +0000)]
hwasan: Fix typo: Previosly -> Previously.
llvm-svn: 349254
Eric Fiselier [Sat, 15 Dec 2018 05:18:56 +0000 (05:18 +0000)]
Fix static assert diagnostic checks in i386
llvm-svn: 349252
Kewen Lin [Sat, 15 Dec 2018 04:39:37 +0000 (04:39 +0000)]
[Power9][NFC] add setb exploitation test case
Add an original test case for setb before the exploitation actually takes effect, later we can check the difference.
Differential Revision: https://reviews.llvm.org/D55696
llvm-svn: 349251
Richard Trieu [Sat, 15 Dec 2018 04:25:19 +0000 (04:25 +0000)]
Fix includes and dependencies for libclang
Remove unneeded includes
Add needed include
Remove dependency on Serialization
llvm-svn: 349237
Eric Fiselier [Sat, 15 Dec 2018 03:48:08 +0000 (03:48 +0000)]
Try 2: Fix bug in buildbot start script
llvm-svn: 349236
Eric Fiselier [Sat, 15 Dec 2018 03:45:21 +0000 (03:45 +0000)]
Fix bug in buildbot start script
llvm-svn: 349235
Eric Fiselier [Sat, 15 Dec 2018 03:24:33 +0000 (03:24 +0000)]
Rework docker setup to make it easier to work around bugs on buildbots
llvm-svn: 349234
Artem Dergachev [Sat, 15 Dec 2018 02:55:55 +0000 (02:55 +0000)]
Revert "[analyzer] MoveChecker: Add checks for dereferencing a smart pointer..."
This reverts commit r349226.
Fails on an MSVC buildbot.
llvm-svn: 349233
Jason Molenda [Sat, 15 Dec 2018 02:51:01 +0000 (02:51 +0000)]
Ah, forgot qModuleInfo. Need to look that one up
and finish filling this in.
llvm-svn: 349232
Jason Molenda [Sat, 15 Dec 2018 02:36:39 +0000 (02:36 +0000)]
A brief outline of the packets that need to be implemented
to write an lldb platform server that doesn't link against
LLDB.framework to be able to fully run the lldb testsuite
on a remote system. The platform packets weren't covered
in the existing lldb-gdb-remote.txt doc, so I wanted to
jot them down in one place.
llvm-svn: 349231
Richard Trieu [Sat, 15 Dec 2018 02:30:16 +0000 (02:30 +0000)]
Move static analyzer core diagnostics to common.
llvm-svn: 349230
Artem Dergachev [Sat, 15 Dec 2018 02:13:26 +0000 (02:13 +0000)]
[analyzer] Fix unknown block calls to have zero parameters.
Right now they report to have one parameter with null decl,
because initializing an ArrayRef of pointers with a nullptr
yields an ArrayRef to an array of one null pointer.
Fixes a crash in the OSObject section of RetainCountChecker.
Differential Revision: https://reviews.llvm.org/D55671
llvm-svn: 349229
Artem Dergachev [Sat, 15 Dec 2018 02:09:02 +0000 (02:09 +0000)]
[analyzer] ObjCDealloc: Fix a crash when a class attempts to deallocate a class.
The checker wasn't prepared to see the dealloc message sent to the class itself
rather than to an instance, as if it was +dealloc.
Additionally, it wasn't prepared for pure-unknown or undefined self values.
The new guard covers that as well, but it is annoying to test because
both kinds of values shouldn't really appear and we generally want to
get rid of all of them (by modeling unknown values with symbols and
by warning on use of undefined values before they are used).
The CHECK: directive for FileCheck at the end of the test looks useless,
so i removed it.
Differential Revision: https://reviews.llvm.org/D55680
llvm-svn: 349228
Artem Dergachev [Sat, 15 Dec 2018 02:06:13 +0000 (02:06 +0000)]
[analyzer] ObjCContainers: Track index values.
Use trackExpressionValue() (previously known as trackNullOrUndefValue())
to track index value in the report, so that the user knew
what Static Analyzer thinks the index is.
Additionally, implement printState() to help debugging the checker later.
Differential Revision: https://reviews.llvm.org/D55458
llvm-svn: 349227
Artem Dergachev [Sat, 15 Dec 2018 01:53:38 +0000 (01:53 +0000)]
[analyzer] MoveChecker: Add checks for dereferencing a smart pointer after move.
Calling operator*() or operator->() on a null STL smart pointer is
undefined behavior.
Smart pointers are specified to become null after being moved from.
So we can't warn on arbitrary method calls, but these two operators
definitely make no sense.
The new bug is fatal because it's an immediate UB,
unlike other use-after-move bugs.
The work on a more generic null smart pointer dereference checker
is still pending.
Differential Revision: https://reviews.llvm.org/D55388
llvm-svn: 349226
Artem Dergachev [Sat, 15 Dec 2018 01:50:58 +0000 (01:50 +0000)]
[analyzer] MoveChecker: NFC: De-duplicate a few checks.
No functional change intended.
Differential Revision: https://reviews.llvm.org/D55387
llvm-svn: 349225
Florian Hahn [Sat, 15 Dec 2018 01:32:58 +0000 (01:32 +0000)]
[SILoadStoreOptimizer] Use std::abs to avoid truncation.
Using regular abs() causes the following warning
error: absolute value function 'abs' given an argument of type 'int64_t' (aka 'long') but has parameter of type 'int' which may cause truncation of value [-Werror,-Wabsolute-value]
(uint32_t)abs(Dist) > MaxDist) {
^
lib/Target/AMDGPU/SILoadStoreOptimizer.cpp:1369:19: note: use function 'std::abs' instead
which causes a bot to fail:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/18284/steps/bootstrap%20clang/logs/stdio
llvm-svn: 349224
Craig Topper [Sat, 15 Dec 2018 01:07:19 +0000 (01:07 +0000)]
[X86] Rename hasNoSignedComparisonUses to hasNoSignFlagUses. Add the instruction that only modify the O flag to the waiver list.
The only caller of this turns CMP with 0 into TEST. CMP with 0 and TEST both set OF to 0 so we should have no issues with instructions that only use OF.
Though I don't think there's any reason we would read just OF after a compare with 0 anyway. So this probably isn't an observable change.
llvm-svn: 349223
Craig Topper [Sat, 15 Dec 2018 01:07:16 +0000 (01:07 +0000)]
[X86] Make hasNoCarryFlagUses/hasNoSignedComparisonUses take an SDValue that indicates which result is the flag result. NFCI
hasNoCarryFlagUses hardcoded that the flag result is 1 and used that to filter which uses were of interest. hasNoSignedComparisonUses just assumes the only result is flags and checks whether any user of the node is a CopyToReg instruction.
After this patch we now do a result number check in both and rely on the caller to provide the result number.
This shouldn't change behavior it was just an odd difference between the two functions that I noticed.
llvm-svn: 349222
Heejin Ahn [Sat, 15 Dec 2018 00:58:12 +0000 (00:58 +0000)]
[WebAssembly] Check if the section order is correct
Summary:
This patch checks if the section order is correct when reading a wasm
object file in `WasmObjectFile` and converting YAML to wasm object in
yaml2wasm. (It is not possible to check when reading YAML because it is
handled exclusively by the YAML reader.)
This checks the ordering of all known sections (core sections + known
custom sections). This also adds section ID DataCount section that will
be scheduled to be added in near future.
Reviewers: sbc100
Subscribers: dschuff, mgorny, jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D54924
llvm-svn: 349221
Florian Hahn [Sat, 15 Dec 2018 00:32:38 +0000 (00:32 +0000)]
[NewGVN] Update use counts for SSA copies when replacing them by their operands.
The current code relies on LeaderUseCount to determine if we can remove
an SSA copy, but in that the LeaderUseCount does not refer to the SSA
copy. If a SSA copy is a dominating leader, we use the operand as dominating
leader instead. This means we removed a user of a ssa copy and we should
decrement its use count, so we can remove the ssa copy once it becomes dead.
Fixes PR38804.
Reviewers: efriedma, davide
Reviewed By: davide
Differential Revision: https://reviews.llvm.org/D51595
llvm-svn: 349217
Peter Collingbourne [Sat, 15 Dec 2018 00:20:17 +0000 (00:20 +0000)]
ELF: Handle R_ARM_V4BX correctly in PIC output files.
Previously we considered R_ARM_V4BX to be an absolute relocation,
which meant that we rejected it in read-only sections in PIC output
files. Instead, treat it as a hint relocation so that relocation
processing ignores it entirely.
Also fix a problem with the test case where it was never being run
because it has a .yaml extension and we don't run tests with that
extension.
Differential Revision: https://reviews.llvm.org/D55728
llvm-svn: 349216
Jonas Devlieghere [Sat, 15 Dec 2018 00:15:33 +0000 (00:15 +0000)]
Simplify Boolean expressions
This patch simplifies boolean expressions acorss LLDB. It was generated
using clang-tidy with the following command:
run-clang-tidy.py -checks='-*,readability-simplify-boolean-expr' -format -fix $PWD
Differential revision: https://reviews.llvm.org/D55584
llvm-svn: 349215
Vedant Kumar [Sat, 15 Dec 2018 00:03:33 +0000 (00:03 +0000)]
[Util] Refer to [s|z]exts of args when converting dbg.declares (fix PR35400)
When converting dbg.declares, if the described value is a [s|z]ext,
refer to the ext directly instead of referring to its operand.
This fixes a narrowing bug (the debugger got the sign of a variable
wrong, see llvm.org/PR35400).
The main reason to refer to the ext's operand was that an optimization
may remove the ext itself, leading to a dropped variable. Now that
InstCombine has been taught to use replaceAllDbgUsesWith (r336451), this
is less of a concern. Other passes can/should adopt this API as needed
to fix dropped variable bugs.
Differential Revision: https://reviews.llvm.org/D51813
llvm-svn: 349214
Artem Belevich [Fri, 14 Dec 2018 23:53:06 +0000 (23:53 +0000)]
[NVPTX] Lower instructions that expand into libcalls.
The change is an effort to split and refactor abandoned
D34708 into smaller parts.
Here the behaviour of unsupported instructions is changed
to match the behaviour of explicit intrinsics calls.
Currently LLVM crashes with:
> Assertion getInstruction() && "Not a call or invoke instruction!" failed.
With this patch LLVM produces a more sensible error message:
> Cannot select: ... i32 = ExternalSymbol'__foobar'
Author: Denys Zariaiev <denys.zariaiev@gmail.com>
Differential Revision: https://reviews.llvm.org/D55145
llvm-svn: 349213
Reid Kleckner [Fri, 14 Dec 2018 23:42:59 +0000 (23:42 +0000)]
Mangle calling conventions into function pointer types where GCC does
Summary:
GCC 5.1 began mangling these Windows calling conventions into function
types, since they can be used for overloading. They've always been
mangled in the MS ABI, but they are new to the Itanium mangler. Note
that the calling convention doesn't appear as part of the main
declaration, it only appears on function parameter types and other
types.
Fixes PR39860
Reviewers: rjmccall, efriedma
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D55672
llvm-svn: 349212
Jim Ingham [Fri, 14 Dec 2018 23:27:08 +0000 (23:27 +0000)]
Fix the unittests for the move of Listener & Broadcaster
from Core to Utility.
llvm-svn: 349211
Kostya Serebryany [Fri, 14 Dec 2018 23:21:31 +0000 (23:21 +0000)]
[libFuzzer] make len_control less aggressive
llvm-svn: 349210
Erich Keane [Fri, 14 Dec 2018 23:17:34 +0000 (23:17 +0000)]
Add AddressSpace mangling to MS mode
All of the symbols demangle on llvm-undname and demangler.com. This
address space qualifier is useful for when we want to use opencl C++ in
Windows mode. Additionally, C++ address-space using functions will now
be usable on windows.
Differential Revision: https://reviews.llvm.org/D55715
Change-Id: Ife4506613c3cce778a783456d62117fbf7d83c26
llvm-svn: 349209
Tatyana Krasnukha [Fri, 14 Dec 2018 23:02:41 +0000 (23:02 +0000)]
Update a comment according to r255360 "Remove -r and -R options from dotest.py"
llvm-svn: 349208
David Blaikie [Fri, 14 Dec 2018 22:44:46 +0000 (22:44 +0000)]
DebugInfo: Avoid using split DWARF when the split unit would be empty.
In ThinLTO many split CUs may be effectively empty because of the lack
of support for cross-unit references in split DWARF.
Using a split unit in those cases is just a waste/overhead - and turned
out to be one contributor to a significant symbolizer performance issue
when global variable debug info was being imported (see r348416 for the
primary fix) due to symbolizers seeing CUs with no ranges, assuming
there might still be addresses covered and walking into the split CU to
see if there are any ranges (when that split CU was in a DWP file, that
meant loading the DWP and its index, the index was extra large because
of all these fractured/empty CUs... and so was very expensive to load).
(the 3rd fix which will follow, is to assume that a CU with no ranges is
empty rather than merely missing its CU level range data - and to not
walk into its DIEs (split or otherwise) in search of address information
that is generally not present)
llvm-svn: 349207
Erich Keane [Fri, 14 Dec 2018 22:41:18 +0000 (22:41 +0000)]
Revert "Add extension to always default-initialize nullptr_t."
This reverts commit
46efdf2ccc2a80aefebf8433dbf9c7c959f6e629.
Richard Smith commented just after I submitted this that this is the
wrong solution. Reverting so that I can fix differently.
llvm-svn: 349206
Reid Kleckner [Fri, 14 Dec 2018 22:40:28 +0000 (22:40 +0000)]
[codeview] Add begin/endSymbolRecord helpers, NFC
Previously beginning a symbol record was excessively verbose. Now it's a
bit simpler. This follows the same pattern as begin/endCVSubsection.
llvm-svn: 349205
Michal Gorny [Fri, 14 Dec 2018 22:38:01 +0000 (22:38 +0000)]
[test] Capture stderr from 'tar --version' call as well
Capture the stderr from 'tar --version' call as otherwise error messages
spill onto user's terminal unnecessarily (e.g. on NetBSD where tar does
not support long options). While at it, refactor the code to use
communicate() instead of reinventing the wheel.
Differential Revision: https://reviews.llvm.org/D55443
llvm-svn: 349204
David Blaikie [Fri, 14 Dec 2018 22:34:03 +0000 (22:34 +0000)]
DebugInfo: Move addAddrBase from DwarfUnit to DwarfCompileUnit
Only CUs need an address table reference.
llvm-svn: 349203
Krzysztof Parzyszek [Fri, 14 Dec 2018 22:33:48 +0000 (22:33 +0000)]
[Hexagon] Add patterns for shifts of v2i16
This fixes https://llvm.org/PR39983.
llvm-svn: 349202
Erich Keane [Fri, 14 Dec 2018 22:22:29 +0000 (22:22 +0000)]
Add extension to always default-initialize nullptr_t.
Core issue 1013 suggests that having an uninitialied std::nullptr_t be
UB is a bit foolish, since there is only a single valid value. This DR
reports that DR616 fixes it, which does so by making lvalue-to-rvalue
conversions from nullptr_t be equal to nullptr.
However, just implementing that results in warnings/etc in many places.
In order to fix all situations where nullptr_t would seem uninitialized,
this patch instead (as an otherwise transparent extension) default
initializes uninitialized VarDecls of nullptr_t.
Differential Revision: https://reviews.llvm.org/D53713
Change-Id: I84d72a9290054fa55341e8cbdac43c8e7f25b885
llvm-svn: 349201
Volkan Keles [Fri, 14 Dec 2018 22:11:20 +0000 (22:11 +0000)]
[GlobalISel] LegalizerHelper: Implement fewerElementsVector for G_LOAD/G_STORE
Reviewers: aemerson, dsanders, bogner, paquette, aditya_nandakumar
Reviewed By: dsanders
Subscribers: rovka, kristof.beyls, javed.absar, tschuett, llvm-commits
Differential Revision: https://reviews.llvm.org/D53728
llvm-svn: 349200
Krzysztof Parzyszek [Fri, 14 Dec 2018 22:05:44 +0000 (22:05 +0000)]
[Hexagon] Use IMPLICIT_DEF to any-extend 32-bit values to 64 bits
llvm-svn: 349199
Rui Ueyama [Fri, 14 Dec 2018 21:58:49 +0000 (21:58 +0000)]
Add --plugin-opt=emit-llvm option.
`--plugin-opt=emit-llvm` is an option for LTO. It makes the linker to
combine all bitcode files and write the result to an output file without
doing codegen. Gold LTO plugin has this option.
This option is being used for some post-link code analysis tools that
have to see a whole program but don't need to see them in the native
machine code.
Differential Revision: https://reviews.llvm.org/D55717
llvm-svn: 349198
Aaron Ballman [Fri, 14 Dec 2018 21:14:44 +0000 (21:14 +0000)]
Using llvm::find_if() instead of a range-based for loop; NFC.
This addresses post-commit review feedback from r349188.
llvm-svn: 349197
Farhana Aleen [Fri, 14 Dec 2018 21:13:14 +0000 (21:13 +0000)]
[AMDGPU] Promote constant offset to the immediate by finding a new base with 13bit constant offset from the nearby instructions.
Summary: Promote constant offset to immediate by recomputing the relative 13bit offset from nearby instructions.
E.g.
s_movk_i32 s0, 0x1800
v_add_co_u32_e32 v0, vcc, s0, v2
v_addc_co_u32_e32 v1, vcc, 0, v6, vcc
s_movk_i32 s0, 0x1000
v_add_co_u32_e32 v5, vcc, s0, v2
v_addc_co_u32_e32 v6, vcc, 0, v6, vcc
global_load_dwordx2 v[5:6], v[5:6], off
global_load_dwordx2 v[0:1], v[0:1], off
=>
s_movk_i32 s0, 0x1000
v_add_co_u32_e32 v5, vcc, s0, v2
v_addc_co_u32_e32 v6, vcc, 0, v6, vcc
global_load_dwordx2 v[5:6], v[5:6], off
global_load_dwordx2 v[0:1], v[5:6], off offset:2048
Author: FarhanaAleen
Reviewed By: arsenm, rampitec
Subscribers: llvm-commits, AMDGPU
Differential Revision: https://reviews.llvm.org/D55539
llvm-svn: 349196
Eric Fiselier [Fri, 14 Dec 2018 21:11:28 +0000 (21:11 +0000)]
[Clang] Add __builtin_launder
Summary:
This patch adds `__builtin_launder`, which is required to implement `std::launder`. Additionally GCC provides `__builtin_launder`, so thing brings Clang in-line with GCC.
I'm not exactly sure what magic `__builtin_launder` requires, but based on previous discussions this patch applies a `@llvm.invariant.group.barrier`. As noted in previous discussions, this may not be enough to correctly handle vtables.
Reviewers: rnk, majnemer, rsmith
Reviewed By: rsmith
Subscribers: kristina, Romain-Geissler-1A, erichkeane, amharc, jroelofs, cfe-commits, Prazek
Differential Revision: https://reviews.llvm.org/D40218
llvm-svn: 349195
Adrian Prantl [Fri, 14 Dec 2018 21:06:00 +0000 (21:06 +0000)]
Remove the Disassembly benchmarks.
While I was out hunting for remaining pexpect-based tests, I came
across these tests that can't possibly work an any modern system, as
they rely on having gdb available in /Developer.
This patch simply removes the test without replacement.
Differential Revision: https://reviews.llvm.org/D55559
llvm-svn: 349194
Eric Fiselier [Fri, 14 Dec 2018 21:04:00 +0000 (21:04 +0000)]
Add missing includes and forward decls to unbreak build
llvm-svn: 349193
Alexey Bataev [Fri, 14 Dec 2018 21:00:58 +0000 (21:00 +0000)]
[OPENMP][NVPTX]Improved interwarp copy function.
Inlined runtime with the current implementation of the interwarp copy
function leads to the undefined behavior because of the not quite
correct implementation of the barriers. Start using generic
__kmpc_barier function instead of the custom made barriers.
llvm-svn: 349192
Artem Dergachev [Fri, 14 Dec 2018 20:52:57 +0000 (20:52 +0000)]
[analyzer] MoveChecker Pt.6: Suppress the warning for the move-safe STL classes.
Some C++ standard library classes provide additional guarantees about their
state after move. Suppress warnings on such classes until a more precise
behavior is implemented. Warnings for locals are not suppressed anyway
because it's still most likely a bug.
Differential Revision: https://reviews.llvm.org/D55307
llvm-svn: 349191