Eric Liu [Wed, 16 May 2018 20:10:10 +0000 (20:10 +0000)]
[clang-move] Fix a potential bug where realpath doesn't work on VFS.
llvm-svn: 332518
Sam Clegg [Wed, 16 May 2018 20:09:05 +0000 (20:09 +0000)]
[WebAssembly] MC: Ensure that FUNCTION_OFFSET relocations are always against function symbols.
The getAtom() method wasn't doing what we needed in all cases. We want
the symbols for the function which defines that section. We can compute
this easily enough and we know that we have at most one function in each
section.
Once this lands I will revert rL331412 which is no longer needed.
Fixes PR37409
Differential Revision: https://reviews.llvm.org/D46970
llvm-svn: 332517
Ben Hamilton [Wed, 16 May 2018 20:07:19 +0000 (20:07 +0000)]
[clang-tidy/google-readability-casting] Disable check for Objective-C++
Summary:
Previously, `google-readability-casting` was disabled for Objective-C.
The Google Objective-C++ style allows both Objective-C and
C++ style in the same file. Since clang-tidy doesn't have a good
way to allow multiple styles per file, this disables the
check for Objective-C++.
Test Plan: New tests added. Ran tests with:
% make -j16 check-clang-tools
Before diff, confirmed tests failed:
https://reviews.llvm.org/P8081
After diff, confirrmed tests passed.
Reviewers: alexfh, Wizard, hokein, stephanemoore
Reviewed By: alexfh, Wizard, stephanemoore
Subscribers: stephanemoore, cfe-commits, bkramer, klimek
Differential Revision: https://reviews.llvm.org/D46659
llvm-svn: 332516
Eric Liu [Wed, 16 May 2018 19:59:49 +0000 (19:59 +0000)]
Attempt to fix buildbot failure caused by r332363
Log: http://lab.llvm.org:8011/builders/clang-x86_64-linux-abi-test/builds/26399
llvm-svn: 332515
Eli Friedman [Wed, 16 May 2018 19:49:01 +0000 (19:49 +0000)]
[MachineOutliner] Don't save/restore LR for tail calls.
The cost computation assumes we do this correctly, but the actual
lowering was wrong.
Differential Revision: https://reviews.llvm.org/D46923
llvm-svn: 332514
whitequark [Wed, 16 May 2018 19:09:48 +0000 (19:09 +0000)]
[OR1K] Add the EPCR special-purpose register to register state.
This makes it possible to unwind hardware exception stack frames,
which necessarily save every register and so need an extra column
for storing the return address. CFI for the exception handler could
then look as follows:
.globl exception_vector
exception_vector:
.cfi_startproc
.cfi_signal_frame
.cfi_return_column 32
l.addi r1, r1, -0x100
.cfi_def_cfa_offset 0x100
l.sw 0x00(r1), r2
.cfi_offset 2, 0x00-0x100
l.sw 0x04(r1), r3
.cfi_offset 3, 0x04-0x100
l.sw 0x08(r1), r4
.cfi_offset 4, 0x08-0x100
l.mfspr r3, r0, SPR_EPCR_BASE
l.sw 0x78(r1), r3
.cfi_offset 32, 0x78-0x100
l.jal exception_handler
l.nop
l.lwz r2, 0x00(r1)
l.lwz r3, 0x04(r1)
l.lwz r4, 0x08(r1)
l.jr r9
l.nop
.cfi_endproc
This register could, of course, also be accessed by the trace
callback or personality function, if so desired.
llvm-svn: 332513
whitequark [Wed, 16 May 2018 19:09:41 +0000 (19:09 +0000)]
[OR1K] Add a dedicated PC register to register state.
Before this commit, R9, the link register, was used as PC register.
However, a stack frame may have R9 not set to PC on entry, either
because it uses a custom calling convention, or, more likely,
because this is a signal or exception stack frame. Using R9 as
PC register made it impossible to unwind such frames.
All other architectures similarly use a dedicated PC register.
llvm-svn: 332512
Greg Clayton [Wed, 16 May 2018 18:37:00 +0000 (18:37 +0000)]
Fix FileSpecTest after LLVM changes to remove_dots (https://reviews.llvm.org/D46887)
llvm-svn: 332511
Simon Pilgrim [Wed, 16 May 2018 18:31:17 +0000 (18:31 +0000)]
[X86] Fix typo in instregex for CVTSI642SDrr
llvm-svn: 332510
Volodymyr Sapsai [Wed, 16 May 2018 18:28:58 +0000 (18:28 +0000)]
[Sema] Fix assertion when constructor is disabled with partially specialized template.
The added test case was triggering assertion
> Assertion failed: (!SpecializedTemplate.is<SpecializedPartialSpecialization*>() && "Already set to a class template partial specialization!"), function setInstantiationOf, file clang/include/clang/AST/DeclTemplate.h, line 1825.
It was happening with ClassTemplateSpecializationDecl
`enable_if_not_same<int, int>`. Because this template is specialized for
equal types not to have a definition, it wasn't instantiated and its
specialization kind remained TSK_Undeclared. And because it was implicit
instantiation, we didn't mark the decl as invalid. So when we try to
find the best matching partial specialization the second time, we hit
the assertion as partial specialization is already set.
Fix by reusing stored partial specialization when available, instead of
looking for the best match every time.
rdar://problem/
39524996
Reviewers: rsmith, arphaman
Reviewed By: rsmith
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D46909
llvm-svn: 332509
Greg Clayton [Wed, 16 May 2018 18:25:51 +0000 (18:25 +0000)]
Fix llvm::sys::path::remove_dots() to return "." instead of an empty path.
Differential Revision: https://reviews.llvm.org/D46887
llvm-svn: 332508
Max Moroz [Wed, 16 May 2018 18:19:30 +0000 (18:19 +0000)]
[libFuzzer] add a symbolic execution puzzle (difficult for today's libFuzzer).
Summary:
This can be solved just in seconds with KLEE. Current libFuzzer
is able to satistfy 101 constraints out of 410 constraints presented during
the first hour of running with -use_value_profile=1 and -max_len=20.
During the next 3 hours, libFuzzer is able to generate ~50 NEW inputs,
bot none of those solve any new constraint.
During the next 20 hours, it didn't find any NEW inputs.
This test might be interesting for experimenting with the data flow tracing
approach started in https://reviews.llvm.org/D46666.
For the solution with KLEE and other information, see
https://github.com/Dor1s/codegate2017-quals-angrybird
Reviewers: kcc
Reviewed By: kcc
Subscribers: delcypher, llvm-commits, #sanitizers
Differential Revision: https://reviews.llvm.org/D46924
llvm-svn: 332507
Roman Lebedev [Wed, 16 May 2018 18:16:01 +0000 (18:16 +0000)]
[Timers] TimerGroup: add constructor from StringMap<TimeRecord>
Summary:
This is needed for the continuation of D46504,
to be able to store the timings.
Reviewers: george.karpenkov, NoQ, alexfh, sbenza
Reviewed By: alexfh
Subscribers: llvm-commits, cfe-commits
Differential Revision: https://reviews.llvm.org/D46939
llvm-svn: 332506
Roman Lebedev [Wed, 16 May 2018 18:15:56 +0000 (18:15 +0000)]
[Timers] TimerGroup: make printJSONValues() method public
Summary:
This is needed for the continuation of D46504,
to be able to store the timings.
Reviewers: george.karpenkov, NoQ, alexfh, sbenza
Reviewed By: alexfh
Subscribers: llvm-commits, cfe-commits
Differential Revision: https://reviews.llvm.org/D46938
llvm-svn: 332505
Roman Lebedev [Wed, 16 May 2018 18:15:51 +0000 (18:15 +0000)]
[Timers] TimerGroup::printJSONValue(): print doubles with no precision loss
Summary:
Although this is not stricly required, i would very much prefer
not to have known random precision losses along the way.
Reviewers: george.karpenkov, NoQ, alexfh, sbenza
Reviewed By: george.karpenkov
Subscribers: llvm-commits, cfe-commits
Differential Revision: https://reviews.llvm.org/D46937
llvm-svn: 332504
Roman Lebedev [Wed, 16 May 2018 18:15:47 +0000 (18:15 +0000)]
[Timers] TimerGroup::printJSONValues(): print mem timer with .mem suffix
Summary: We have just used `.sys` suffix for the previous timer, this is clearly a typo
Reviewers: george.karpenkov, NoQ, alexfh, sbenza
Reviewed By: alexfh
Subscribers: llvm-commits, cfe-commits
Differential Revision: https://reviews.llvm.org/D46936
llvm-svn: 332503
Kostya Kortchinsky [Wed, 16 May 2018 18:12:31 +0000 (18:12 +0000)]
[scudo] Quarantine optimization
Summary:
It turns out that the previous code construct was not optimizing the allocation
and deallocation of batches. The class id was read as a class member (even
though a precomputed one) and nothing else was optimized. By changing the
construct this way, the compiler actually optimizes most of the allocation and
deallocation away to only work with a single class id, which not only saves some
CPU but also some code footprint.
Reviewers: alekseyshl, dvyukov
Reviewed By: dvyukov
Subscribers: dvyukov, delcypher, llvm-commits, #sanitizers
Differential Revision: https://reviews.llvm.org/D46961
llvm-svn: 332502
Sanjay Patel [Wed, 16 May 2018 17:58:50 +0000 (17:58 +0000)]
[x86] preserve test intent by removing undef
We need to clean up the DAG floating-point undef logic.
This process is similar to how we handled integer undef
logic in D43141.
And as we did there, I'm trying to reduce the patch by
changing tests that would probably become meaningless
once we make those fixes.
llvm-svn: 332501
Sanjay Patel [Wed, 16 May 2018 17:58:08 +0000 (17:58 +0000)]
[x86] preserve test intent by removing undef
We need to clean up the DAG floating-point undef logic.
This process is similar to how we handled integer undef
logic in D43141.
And as we did there, I'm trying to reduce the patch by
changing tests that would probably become meaningless
once we make those fixes.
llvm-svn: 332500
Sanjay Patel [Wed, 16 May 2018 17:57:35 +0000 (17:57 +0000)]
[x86] preserve test intent by removing undef
We need to clean up the DAG floating-point undef logic.
This process is similar to how we handled integer undef
logic in D43141.
And as we did there, I'm trying to reduce the patch by
changing tests that would probably become meaningless
once we make those fixes.
llvm-svn: 332499
Craig Topper [Wed, 16 May 2018 17:40:07 +0000 (17:40 +0000)]
[X86][AVX512DQ] Use packed instructions for scalar FP<->i64 conversions on 32-bit targets
As i64 types are not legal on 32-bit targets, insert these into a suitable zero vector and use the packed vXi64<->FP conversion instructions instead.
Fixes PR3163.
Differential Revision: https://reviews.llvm.org/D43441
llvm-svn: 332498
Vedant Kumar [Wed, 16 May 2018 17:30:58 +0000 (17:30 +0000)]
[Debugify] Tighten up the test for -debugify-each, NFC
In post-commit review for r332416, Paul Robinson pointed out that the
test for -debugify-each is not checking what it needs to.
This commit tightens up the test.
llvm-svn: 332497
JF Bastien [Wed, 16 May 2018 17:25:35 +0000 (17:25 +0000)]
Signal handling should be signal-safe
Summary:
Before this patch, signal handling wasn't signal safe. This leads to real-world
crashes. It used ManagedStatic inside of signals, this can allocate and can lead
to unexpected state when a signal occurs during llvm_shutdown (because
llvm_shutdown destroys the ManagedStatic). It also used cl::opt without custom
backing storage. Some de-allocation was performed as well. Acquiring a lock in a
signal handler is also a great way to deadlock.
We can't just disable signals on llvm_shutdown because the signals might do
useful work during that shutdown. We also can't just disable llvm_shutdown for
programs (instead of library uses of clang) because we'd have to then mark the
pointers as not leaked and make sure all the ManagedStatic uses are OK to leak
and remain so.
Move all of the code to lock-free datastructures instead, and avoid having any
of them in an inconsistent state. I'm not trying to be fancy, I'm not using any
explicit memory order because this code isn't hot. The only purpose of the
atomics is to guarantee that a signal firing on the same or a different thread
doesn't see an inconsistent state and crash. In some cases we might miss some
state (for example, we might fail to delete a temporary file), but that's fine.
Note that I haven't touched any of the backtrace support despite it not
technically being totally signal-safe. When that code is called we know
something bad is up and we don't expect to continue execution, so calling
something that e.g. sets errno is the least of our problems.
A similar patch should be applied to lib/Support/Windows/Signals.inc, but that
can be done separately.
Fix r332428 which I reverted in r332429. I originally used double-wide CAS
because I was lazy, but some platforms use a runtime function for that which
thankfully failed to link (it would have been bad for signal handlers
otherwise). I use a separate flag to guard the data instead.
<rdar://problem/
28010281>
Reviewers: dexonsmith
Subscribers: steven_wu, llvm-commits
llvm-svn: 332496
Jonas Hahnfeld [Wed, 16 May 2018 17:20:27 +0000 (17:20 +0000)]
[libomptarget-nvptx-bc] Pass found CUDA installations
We already know where the CUDA SDK is, so there is no point in
letting Clang search for it again and possibly finding no or
a different installation.
--cuda-path is supported since the beginning of CUDA support in
Clang, so making this required doesn't impose additional restrictions.
Differential Revision: https://reviews.llvm.org/D46930
llvm-svn: 332495
Jonas Hahnfeld [Wed, 16 May 2018 17:20:21 +0000 (17:20 +0000)]
[libomptarget-nvptx] Test bitcode compiler flags and enable by default
Move all logic related to selecting the bitcode compiler and linker
into a new file and dynamically test required compiler flags. This
also adds -fcuda-rdc for Clang trunk as previously attempted in D44992
which fixes the build.
As a result this change also enables building the library by default
if all prerequisites are met.
Differential Revision: https://reviews.llvm.org/D46901
llvm-svn: 332494
Matt Davis [Wed, 16 May 2018 17:07:08 +0000 (17:07 +0000)]
[llvm-mca] Move the RegisterFile class into its own translation unit. NFC
Summary: This change will help us turn the DispatchUnit into its own stage.
Reviewers: andreadb, RKSimon, courbet
Reviewed By: andreadb, courbet
Subscribers: mgorny, tschuett, gbedwell, llvm-commits
Differential Revision: https://reviews.llvm.org/D46916
llvm-svn: 332493
Erich Keane [Wed, 16 May 2018 17:04:47 +0000 (17:04 +0000)]
Add lit tests forgotten for R332470
I forgot to svn-add the lit tests for R332470.
Added here!
llvm-svn: 332492
Bruno Cardoso Lopes [Wed, 16 May 2018 17:00:24 +0000 (17:00 +0000)]
[Modules] Do not diagnose missing import in recovery mode if there isn't a decl to lookup
Clang often tries to create implicit module import for error recovery,
which does a great job helping out with diagnostics. However, sometimes
clang does not have enough information given that it's using an invalid
context to move on. Be more strict in those cases to avoid crashes.
We hit crash on invalids because of this but unfortunately there are no
testcases and I couldn't manage to create one. The crashtrace however
indicates pretty clear why it's happening.
rdar://problem/
39313933
llvm-svn: 332491
Nirav Dave [Wed, 16 May 2018 16:48:20 +0000 (16:48 +0000)]
[DAG] Prune cycle check in store merge.
As part of merging stores we check that fusing the nodes does not
cause a cycle due to one candidate store being indirectly dependent on
another store (this may happen via chained memory copies). This is
done by searching if a store is a predecessor to another store's
value.
Prune the search at the candidate search's root node which is a
predecessor to all candidate stores. This reduces the
size of the subgraph searched in large basic blocks.
Reviewers: jyknight
Subscribers: llvm-commits, hiraditya
Differential Revision: https://reviews.llvm.org/D46955
llvm-svn: 332490
Nirav Dave [Wed, 16 May 2018 16:47:54 +0000 (16:47 +0000)]
[DAG] Defer merge store cycle checking to just before merge. NFCI.
llvm-svn: 332489
Michael Kruse [Wed, 16 May 2018 16:39:51 +0000 (16:39 +0000)]
[DeLICM] Avoid assertion on out-of-quota.
An assertion was not prepared to be passed a nullptr because the
out-of-quota limit was exceeded. Bail-out before the assertion
since the assertion does not apply on out-of-quote.
This fixes llvm.org/PR37477.
llvm-svn: 332488
Nico Weber [Wed, 16 May 2018 16:29:05 +0000 (16:29 +0000)]
Give shared modules in unittests the platform-native extension, make PipSqueak a MODULE
As far as I can tell from revision history, there's no good reason to call
these files .so instead of .dll in Windows, so use the normal extension.
Also change PipSquak from SHARED to MODULE -- it's never passed to
target_link_libraries() and only loaded via dlopen(), so MODULE is more
appropriate. This makes it possible to delete a workaround for SHARED ldflags
being not quite right as well.
No intended behavior change.
https://reviews.llvm.org/D46898
llvm-svn: 332487
Sanjay Patel [Wed, 16 May 2018 16:23:41 +0000 (16:23 +0000)]
[x86] add run with unsafe global param; NFC
llvm-svn: 332486
Tony Tye [Wed, 16 May 2018 16:19:34 +0000 (16:19 +0000)]
[AMDGPU] Change llvm.debugtrap to be a debug breakpoint that can resume execution.
No longer require the queue pointer to be passed in in fixed SGPRs.
Differential Revision: https://reviews.llvm.org/D46769
llvm-svn: 332485
Sanjay Patel [Wed, 16 May 2018 16:16:48 +0000 (16:16 +0000)]
[x86] add tests for DAG FP undef operands; NFC
llvm-svn: 332484
Sander de Smalen [Wed, 16 May 2018 15:45:17 +0000 (15:45 +0000)]
[AArch64][SVE] Improve diagnostics for vectors with incorrect element-size.
For regular SVE vector operands, this patch introduces a more
sensible diagnostic when the vector has a wrong suffix (e.g. z0.s vs z0.b).
For example:
add z0.s, z1.s, z2.b -> invalid element width
^_____^
mismatch
For the vector-with-shift/extend (e.g. z0.s, uxtw #2) this patch takes
a slightly different approach and instead returns a 'invalid operand'
if the element size is not as expected. This is because the diagnostics
are more specificied to suggest using the right shift/extend suffix. This
is a trade-off not to introduce more operand classes and still provide
useful diagnostics for LD1 and PRF instructions.
For example:
ld1w z1.s, p0/z, [x0, z0.s] -> invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw)'
ld1w z1.d, p0/z, [x0, z0.s] -> invalid operand
^________________^
mismatch
For gather prefetches, both 'z0.s' and 'z0.d' would be allowed:
prfw #0, p0, [x0, z0.s] -> invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw) #2'
prfw #0, p0, [x0, z0.d] -> invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #2'
Without this change, the diagnostic would unnecessarily suggest a
different element size:
prfw #0, p0, [x0, z0.s] -> invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #2'
Reviewers: SjoerdMeijer, aemerson, fhahn, samparker, javed.absar
Reviewed By: SjoerdMeijer
Differential Revision: https://reviews.llvm.org/D46688
llvm-svn: 332483
Sirish Pande [Wed, 16 May 2018 15:36:52 +0000 (15:36 +0000)]
[AArch64] Gangup loads and stores for pairing.
Keep loads and stores together (target defines how many loads
and stores to gang up), such that it will help in pairing
and vectorization.
Differential Revision https://reviews.llvm.org/D46477
llvm-svn: 332482
Joel E. Denny [Wed, 16 May 2018 15:18:30 +0000 (15:18 +0000)]
[Attr] Don't print fake MSInheritance argument
This was discovered at:
http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-
20180514/228390.html
Reviewed by: aaron.ballman
Differential Revision: https://reviews.llvm.org/D46905
llvm-svn: 332481
Joel E. Denny [Wed, 16 May 2018 15:18:27 +0000 (15:18 +0000)]
Revert r332474: [Attr] Don't print fake MSInheritance argument
I botched the commit log attributes.
llvm-svn: 332480
Sanjay Patel [Wed, 16 May 2018 15:15:22 +0000 (15:15 +0000)]
[InstCombine] allow more binop (shuffle X), C transforms
The canonicalization was restricted to shuffle masks with
a 1-to-1 mapping to the constant vector, but that disqualifies
the common splat pattern. This is part of solving PR37463:
https://bugs.llvm.org/show_bug.cgi?id=37463
llvm-svn: 332479
Kostya Kortchinsky [Wed, 16 May 2018 15:13:26 +0000 (15:13 +0000)]
[sanitizer] Minor 32-bit primary improvements
Summary:
For the 32-bit TransferBatch:
- `SetFromArray` callers have bounds `count`, so relax the `CHECK` to `DCHECK`;
- same for `Add`;
- mark `CopyToArray` as `const`;
For the 32-bit Primary:
- `{Dea,A}llocateBatch` are only called from places that check `class_id`,
relax the `CHECK` to `DCHECK`;
- same for `AllocateRegion`;
- remove `GetRegionBeginBySizeClass` that is not used;
- use a local variable for the random shuffle state, so that the compiler can
use a register instead of reading and writing to the `SizeClassInfo` at every
iteration;
For the 32-bit local cache:
- pass the count to drain instead of doing a `Min` everytime which is at times
superfluous.
Reviewers: alekseyshl
Reviewed By: alekseyshl
Subscribers: kubamracek, delcypher, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D46657
llvm-svn: 332478
Alexey Bataev [Wed, 16 May 2018 15:08:32 +0000 (15:08 +0000)]
[OPENMP] DO not crash on combined constructs in declare target
functions.
If the combined construct is specified in the declare target function
and the device code is emitted, the compiler crashes because of the
incorrectly chosen captured stmt. We should choose the innermost
captured statement, not the outermost.
llvm-svn: 332477
Teresa Johnson [Wed, 16 May 2018 14:58:14 +0000 (14:58 +0000)]
[ThinLTO] Make llvm-lto module ID numbering consistent with linkers
The module ID numbering typically starts at 0 (in both the new and old
LTO APIs, used by linkers). Make llvm-lto consistent with that.
Split out of D46699.
llvm-svn: 332476
Teresa Johnson [Wed, 16 May 2018 14:56:02 +0000 (14:56 +0000)]
[ThinLTO] Add const qualifier to a couple of flag getter methods
Split these minor fixes out of D46699.
llvm-svn: 332475
Joel E. Denny [Wed, 16 May 2018 14:51:18 +0000 (14:51 +0000)]
[Attr] Don't print fake MSInheritance argument
This was discovered at:
http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-
20180514/228390.html
Reviewed by: aaron.ballman
https://reviews.llvm.org/D46905
llvm-svn: 332474
Sanjay Patel [Wed, 16 May 2018 14:38:07 +0000 (14:38 +0000)]
[OpenCL] make test independent of optimizer
There shouldn't be any tests that run the entire optimizer here,
but the last test in this file is definitely going to break with
a change in LLVM IR canonicalization. Change that part to check
the unoptimized IR because that's the real intent of this file.
llvm-svn: 332473
Sander de Smalen [Wed, 16 May 2018 14:16:01 +0000 (14:16 +0000)]
[AArch64][SVE] Asm: Support for gather PRF prefetch instructions
Reviewers: rengolin, fhahn, samparker, SjoerdMeijer, javed.absar
Reviewed By: SjoerdMeijer
Differential Revision: https://reviews.llvm.org/D46686
llvm-svn: 332472
Philip Pfaffe [Wed, 16 May 2018 14:05:03 +0000 (14:05 +0000)]
[ScopInfo] Remove usage of isl_set_n_basic_set()
Summary: This patch aims to remove the usage of old C-styled isl functions (in this case `isl_set_n_basic_set()`) in favor of new C++ isl interface based methods in `ScopInfo.cpp`.
Patch by Sahil Yerawar
Differential Revision: https://reviews.llvm.org/D46935
llvm-svn: 332471
Erich Keane [Wed, 16 May 2018 13:57:17 +0000 (13:57 +0000)]
Add support for __declspec(code_seg("segname"))
Add support for __declspec(code_seg("segname"))
This patch is built on the existing support for #pragma code_seg. The code_seg
declspec is allowed on functions and classes. The attribute enables the
placement of code into separate named segments, including compiler-generated
members and template instantiations.
For more information, please see the following:
https://msdn.microsoft.com/en-us/library/dn636922.aspx
A new CodeSeg attribute is used instead of adding a new spelling to the existing
Section attribute since they don’t apply to the same Subjects. Section
attributes are also added for the code_seg declspec since they are used for
#pragma code_seg. No CodeSeg attributes are added to the AST.
The patch is written to match with the Microsoft compiler’s behavior even where
that behavior is a little complicated (see https://reviews.llvm.org/D22931, the
Microsoft feedback page is no longer available since MS has removed the page).
That code is in getImplicitSectionAttrFromClass routine.
Diagnostics messages are added to match with the Microsoft compiler for code-seg
attribute mismatches on base and derived classes and virtual overrides.
Differential Revision: https://reviews.llvm.org/D43352
llvm-svn: 332470
Ivan Donchevskii [Wed, 16 May 2018 13:50:05 +0000 (13:50 +0000)]
[Frontend] Avoid running plugins during code completion parse
The parsing that is done for code completion is a special case that will
discard any generated diagnostics, so avoid running plugins for this
case in the first place to avoid performance penalties due to the
plugins.
A scenario for this is for example libclang with extra plugins like tidy.
Patch by Nikolai Kosjar
Differential Revision: https://reviews.llvm.org/D46050
llvm-svn: 332469
Andrea Di Biagio [Wed, 16 May 2018 13:38:17 +0000 (13:38 +0000)]
[llvm-mca] Move definitions in FetchStage.cpp inside namespace mca. NFC
Also, get rid of a redundant include in FetchStage.h and FetchStage.cpp.
llvm-svn: 332468
Alexey Bataev [Wed, 16 May 2018 13:36:30 +0000 (13:36 +0000)]
[OPENMP, NVPTX] Add check for SPMD mode in orphaned parallel directives.
If the orphaned directive is executed in SPMD mode, we need to emit the
check for the SPMD mode and run the orphaned parallel directive in
sequential mode.
llvm-svn: 332467
Krzysztof Pszeniczny [Wed, 16 May 2018 13:16:54 +0000 (13:16 +0000)]
[BasicAA] Fix handling of invariant group launders
Summary:
A recent patch ([[ https://reviews.llvm.org/rL331587 | rL331587 ]]) to Capture Tracking taught it that the `launder_invariant_group` intrinsic captures its argument only by returning it. Unfortunately, BasicAA still considered every call instruction as a possible escape source and hence concluded that the result of a `launder_invariant_group` call cannot alias any local non-escaping value. This led to [[ https://bugs.llvm.org/show_bug.cgi?id=37458 | bug 37458 ]].
This patch updates the relevant check for escape sources in BasicAA.
Reviewers: Prazek, kuhar, rsmith, hfinkel, sanjoy, xbolva00
Reviewed By: hfinkel, xbolva00
Subscribers: JDevlieghere, hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D46900
llvm-svn: 332466
Eric Liu [Wed, 16 May 2018 12:58:13 +0000 (12:58 +0000)]
Fix an Index test caused by a clang-format change (r332436).
llvm-svn: 332465
Simon Dardis [Wed, 16 May 2018 12:44:27 +0000 (12:44 +0000)]
[mips] Simplify some of the predicate scopes for (negative) multiply add/sub instructions (NFCI)
llvm-svn: 332464
Henry Wong [Wed, 16 May 2018 12:37:53 +0000 (12:37 +0000)]
[analyzer] Improve the modeling of memset().
Since there is no perfect way bind the non-zero value with the default binding, this patch only considers the case where buffer's offset is zero and the char value is 0. And according to the value for overwriting, decide how to update the string length.
Reviewers: dcoughlin, NoQ, xazax.hun, a.sidorin, george.karpenkov
Reviewed By: NoQ
Differential Revision: https://reviews.llvm.org/D44934
llvm-svn: 332463
Simon Dardis [Wed, 16 May 2018 12:37:04 +0000 (12:37 +0000)]
[mips] Join existing scopes for DecoderNamespace (NFCI)
llvm-svn: 332462
Andrea Di Biagio [Wed, 16 May 2018 12:33:09 +0000 (12:33 +0000)]
[llvm-mca] Fix perf regression after r332390.
Revision 332390 introduced a FetchStage class in llvm-mca.
By design, FetchStage owns all the instructions in-flight in the OoO Backend.
Before this change, new instructions were added to a DenseMap indexed by
instruction id. The problem with using a DenseMap is that elements are not
ordered by key. This was causing a massive slow down in method
FetchStage::postExecute(), which searches for instructions retired that can be
deleted.
This patch replaces the DenseMap with a std::map ordered by instruction index.
At the end of every cycle, we search for the first instruction which is not
marked as "retired", and we remove all the previous instructions before it.
This works well because instructions are retired in-order.
Before this patch, a debug build of llvm-mca (on my Ryzen linux machine) took
~8.0 seconds to simulate 3000 iterations of a x86 dot-product (a `vmulps,
vpermilps, vaddps, vpermilps, vaddps` sequence). With this patch, it now takes
~0.8s to run all the 3000 iterations.
llvm-svn: 332461
Ilya Biryukov [Wed, 16 May 2018 12:32:49 +0000 (12:32 +0000)]
[clangd] Parse all comments in Sema and completion.
Summary:
And add tests for the comment extraction code.
clangd will now show non-doxygen comments in completion for results
coming from Sema and Dynamic index.
Static index does not include the comments yet, I will enable it in
a separate commit after investigating which implications it has for
the size of the index.
Reviewers: sammccall, hokein, ioeric
Reviewed By: sammccall
Subscribers: klimek, MaskRay, jkorous, cfe-commits
Differential Revision: https://reviews.llvm.org/D46002
llvm-svn: 332460
Ilya Biryukov [Wed, 16 May 2018 12:32:44 +0000 (12:32 +0000)]
[clangd] Retrieve minimally formatted comment text in completion.
Summary:
Previous implementation used to extract brief text from doxygen comments.
Brief text parsing slows down completion and is not suited for
non-doxygen comments.
This commit switches to providing comments that mimic the ones
originally written in the source code, doing minimal reindenting and
removing the comments markers to make the output more user-friendly.
It means we lose support for doxygen-specific features, e.g. extracting
brief text, but provide useful results for non-doxygen comments.
Switching the doxygen support back is an option, but I suggest to see
whether the current approach gives more useful results.
Reviewers: sammccall, hokein, ioeric
Reviewed By: sammccall
Subscribers: klimek, MaskRay, jkorous, cfe-commits
Differential Revision: https://reviews.llvm.org/D45999
llvm-svn: 332459
Ilya Biryukov [Wed, 16 May 2018 12:30:09 +0000 (12:30 +0000)]
[AST] Added a helper to extract a user-friendly text of a comment.
Summary:
The helper is used in clangd for documentation shown in code completion
and storing the docs in the symbols. See D45999.
This patch reuses the code of the Doxygen comment lexer, disabling the
bits that do command and html tag parsing.
The new helper works on all comments, including non-doxygen comments.
However, it does not understand or transform any doxygen directives,
i.e. cannot extract brief text, etc.
Reviewers: sammccall, hokein, ioeric
Reviewed By: ioeric
Subscribers: mgorny, cfe-commits
Differential Revision: https://reviews.llvm.org/D46000
llvm-svn: 332458
Ilya Biryukov [Wed, 16 May 2018 12:30:01 +0000 (12:30 +0000)]
[CodeComplete] Expose helpers to get RawComment of completion result.
Summary: Used in clangd, see D45999.
Reviewers: sammccall, hokein, ioeric, arphaman
Reviewed By: sammccall
Subscribers: arphaman, cfe-commits
Differential Revision: https://reviews.llvm.org/D46001
llvm-svn: 332457
Eric Liu [Wed, 16 May 2018 12:12:30 +0000 (12:12 +0000)]
[clangd] Filter out private proto symbols in SymbolCollector.
Summary:
This uses heuristics to identify private proto symbols. For example,
top-level symbols whose name contains "_" are considered private. These symbols
are not expected to be used by users.
Reviewers: ilya-biryukov, malaperle
Reviewed By: ilya-biryukov
Subscribers: sammccall, klimek, MaskRay, jkorous, cfe-commits
Differential Revision: https://reviews.llvm.org/D46751
llvm-svn: 332456
Clement Courbet [Wed, 16 May 2018 11:49:15 +0000 (11:49 +0000)]
[llvm-exegesis] Fix unused variable warning in release mode.
llvm-svn: 332455
Gabor Marton [Wed, 16 May 2018 11:48:11 +0000 (11:48 +0000)]
Test commit access: remove superflous spaces
llvm-svn: 332454
Matt Arsenault [Wed, 16 May 2018 11:47:30 +0000 (11:47 +0000)]
AMDGPU: Custom lower v4i16/v4f16 vector operations
Avoids stack access.
Also handle extract hi elt pattern from truncate + shift
to avoid a couple test regressions.
llvm-svn: 332453
David Bolvansky [Wed, 16 May 2018 11:39:52 +0000 (11:39 +0000)]
[SimplifyLibcalls] Replace locked IO with unlocked IO
Summary: If file stream arg is not captured and source is fopen, we could replace IO calls by unlocked IO ("_unlocked" function variants) to gain better speed,
Reviewers: efriedma, RKSimon, spatel, sanjoy, hfinkel, majnemer, lebedev.ri, rja
Reviewed By: rja
Subscribers: rja, srhines, efriedma, lebedev.ri, llvm-commits
Differential Revision: https://reviews.llvm.org/D45736
llvm-svn: 332452
Simon Pilgrim [Wed, 16 May 2018 10:53:45 +0000 (10:53 +0000)]
[X86] Split WriteCvtI2F/WriteCvtF2I into I<->F32 and I<->F64 scheduler classes
A lot of the models still have too many InstRW overrides for these new classes - this needs cleaning up but I wanted to get the classes in first
llvm-svn: 332451
David Green [Wed, 16 May 2018 10:41:58 +0000 (10:41 +0000)]
[LoopUnroll] Split out simplify code after Unroll into a new function. NFC
So that it can be shared with other passes that may end up doing the same
thing.
Differential Revision: https://reviews.llvm.org/D45874
llvm-svn: 332450
Amara Emerson [Wed, 16 May 2018 10:32:02 +0000 (10:32 +0000)]
[GlobalISel][IRTranslator] Split aggregates during IR translation.
We currently handle all aggregates by creating one large LLT, and letting the
legalizer deal with splitting them up. However using this approach means that
we can't support big endian code correctly.
This patch changes the way that the IRTranslator deals with aggregate values,
by splitting them up into their constituent element values. To do this, parts
of the translator need to be modified to deal with multiple VRegs for a single
Value.
A new Value to VReg mapper is introduced to help keep compile time under
control, currently there is no measurable impact on CTMark despite the extra
code being generated in some cases.
Patch is based on the original work of Tim Northover.
Differential Revision: https://reviews.llvm.org/D46018
llvm-svn: 332449
Jonas Devlieghere [Wed, 16 May 2018 10:23:25 +0000 (10:23 +0000)]
[diagtool] Add diagtool to install target.
Although not very well known, diagtool is an incredibly convenient
utility for dealing with diagnostics.
Particularly useful are the "tree" and "show-enabled" commands:
- The former prints the hierarchy of diagnostic (warning) flags and
which of them are enabled by default.
- The latter can be used to replace an invocation to clang and will
print which diagnostics are disabled, warnings or errors.
For instance: `diagtool show-enabled -Wall -Werror /tmp/test.c` will
print that -Wunused-variable (warn_unused_variable) will be treated as
an error.
This patch adds them to the install target so it gets shipped with the
LLVM release. It also adds a very basic man page and mentions this
change in the release notes.
Differential revision: https://reviews.llvm.org/D46694
llvm-svn: 332448
Andrea Di Biagio [Wed, 16 May 2018 10:12:06 +0000 (10:12 +0000)]
[llvm-mca] Regenerate tests after r332381 and r332361. NFC
llvm-svn: 332447
Simon Dardis [Wed, 16 May 2018 10:03:05 +0000 (10:03 +0000)]
[mips] Add support for isBranchOffsetInRange and use it for MipsLongBranch
Add support for this target hook, covering MIPS, microMIPS and MIPSR6, along
with some tests. Also add missing getOppositeBranchOpc() cases exposed by the
tests.
Reviewers: atanasyan, abeserminji, smaksimovic
Differential Revision: https://reviews.llvm.org/D46794
llvm-svn: 332446
Clement Courbet [Wed, 16 May 2018 09:50:04 +0000 (09:50 +0000)]
[llvm-exegesis] Add a flag to output analysis csv to a file.
Reviewers: gchatelet
Subscribers: llvm-commits, tschuett
Differential Revision: https://reviews.llvm.org/D46931
llvm-svn: 332445
Peter Smith [Wed, 16 May 2018 09:33:25 +0000 (09:33 +0000)]
[AArch64] Support "S" inline assembler constraint
This patch re-introduces the "S" inline assembler constraint. This matches
an absolute symbolic address or a label reference. The primary use case is
asm("adrp %0, %1\n\t"
"add %0, %0, :lo12:%1" : "=r"(addr) : "S"(&var));
I say re-introduces as it seems like "S" was implemented in the original
AArch64 backend, but it looks like it wasn't carried forward to the merged
backend. The original implementation had A and L modifiers that could be
used to print ":lo12:" to the string. It looks like gcc doesn't use these
and :lo12: is expected to be written in the inline assembly string so I've
not implemented A and L. Clang already supports the S modifier.
Fixes PR37180
Differential Revision: https://reviews.llvm.org/D46745
llvm-svn: 332444
Andrea Di Biagio [Wed, 16 May 2018 09:24:38 +0000 (09:24 +0000)]
[llvm-mca] Remove redundant includes in Stage.h.
This patch also makes Stage::isReady() a const method.
No functional change.
llvm-svn: 332443
Sander de Smalen [Wed, 16 May 2018 09:16:20 +0000 (09:16 +0000)]
[AArch64][SVE] Asm: Support for structured LD2, LD3 and LD4 (scalar+scalar) load instructions.
Reviewers: rengolin, fhahn, samparker, SjoerdMeijer, javed.absar
Reviewed By: fhahn
Differential Revision: https://reviews.llvm.org/D46679
llvm-svn: 332442
Clement Courbet [Wed, 16 May 2018 09:10:04 +0000 (09:10 +0000)]
Fix unused variable warning in r332437.
llvm-svn: 332441
Alexander Richardson [Wed, 16 May 2018 09:00:28 +0000 (09:00 +0000)]
Escape ]]> in xunit xml output
Summary:
This sequence ends the CDATA block so any characters after that are no
longer escaped. This can be fixed by replacing "]]>" with "]]]]><![CDATA[>".
Reviewers: cmatthews
Reviewed By: cmatthews
Differential Revision: https://reviews.llvm.org/D46886
llvm-svn: 332440
Alexander Richardson [Wed, 16 May 2018 08:58:26 +0000 (08:58 +0000)]
Emit a left-shift instead of a power-of-two multiply for jump-tables
Summary:
SelectionDAGLegalize::ExpandNode() inserts an ISD::MUL when lowering a
BR_JT opcode. While many backends optimize this multiply into a shift, e.g.
the MIPS backend currently always lowers this into a sequence of
load-immediate+multiply+mflo in MipsSETargetLowering::lowerMulDiv().
I initially changed the multiply to a shift in the MIPS backend but it
turns out that would not have handled the MIPSR6 case and was a lot more
code than doing it in LegalizeDAG.
I believe performing this simple optimization in LegalizeDAG instead of
each individual backend is the better solution since this also fixes other
backeds such as MSP430 which calls the multiply runtime function
__mspabi_mpyi without this patch.
Reviewers: sdardis, atanasyan, pftbest, asl
Reviewed By: sdardis
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D45760
llvm-svn: 332439
Heejin Ahn [Wed, 16 May 2018 08:53:57 +0000 (08:53 +0000)]
[clangd] Fix a link failure in unittests
Summary: D46524 (rL332378) introduced a link failure when built with
`-DSHARED_LIB=ON`, which this patch fixes.
Reviewers: ioeric
Subscribers: klimek, mgorny, ilya-biryukov, ioeric, MaskRay, jkorous, cfe-commits
Differential Revision: https://reviews.llvm.org/D46906
llvm-svn: 332438
Clement Courbet [Wed, 16 May 2018 08:47:21 +0000 (08:47 +0000)]
[llvm-exegesis] Analysis: Display sched class for instructions.
Reviewers: gchatelet
Subscribers: tschuett, llvm-commits
Differential Revision: https://reviews.llvm.org/D46883
llvm-svn: 332437
Francois Ferrand [Wed, 16 May 2018 08:25:03 +0000 (08:25 +0000)]
clang-format: Allow optimizer to break template declaration.
Summary:
Introduce `PenaltyBreakTemplateDeclaration` to control the penalty,
and change `AlwaysBreakTemplateDeclarations` to an enum with 3 modes:
* `No` for regular, penalty based, wrapping of template declaration
* `MultiLine` for always wrapping before multi-line declarations (e.g.
same as legacy behavior when `AlwaysBreakTemplateDeclarations=false`)
* `Yes` for always wrapping (e.g. same as legacy behavior when
`AlwaysBreakTemplateDeclarations=true`)
Reviewers: krasimir, djasper, klimek
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D42684
llvm-svn: 332436
Simon Pilgrim [Wed, 16 May 2018 08:23:47 +0000 (08:23 +0000)]
[X86][SSE] Fix tests for vector rotates by splat variable.
We weren't correctly splatting the offset shift
llvm-svn: 332435
Francois Ferrand [Wed, 16 May 2018 08:03:52 +0000 (08:03 +0000)]
clang-format: tweak formatting of variable initialization blocks
Summary:
This patch changes the behavior of PenaltyBreakBeforeFirstCallParameter
so that is does not apply after a brace, when Cpp11BracedListStyle is
false.
This way, variable initialization is wrapped more like an initializer
than like a function call, which is more consistent with user
expectations for this braced list style.
With PenaltyBreakBeforeFirstCallParameter=200, this gives the following
code: (with Cpp11BracedListStyle=false)
Before :
const std::unordered_map<std::string, int> Something::MyHashTable =
{ { "
aaaaaaaaaaaaaaaaaaaaa", 0 },
{ "
bbbbbbbbbbbbbbbbbbbbb", 1 },
{ "
ccccccccccccccccccccc", 2 } };
After :
const std::unordered_set<std::string> Something::MyUnorderedSet = {
{ "
aaaaaaaaaaaaaaaaaaaaa", 0 },
{ "
bbbbbbbbbbbbbbbbbbbbb", 1 },
{ "
ccccccccccccccccccccc", 2 }
};
Reviewers: krasimir, djasper, klimek
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D43290
llvm-svn: 332434
Sander de Smalen [Wed, 16 May 2018 07:50:09 +0000 (07:50 +0000)]
[AArch64][SVE] Asm: Support for contiguous PRF prefetch instructions.
Reviewers: rengolin, fhahn, samparker, SjoerdMeijer, javed.absar
Reviewed By: SjoerdMeijer
Differential Revision: https://reviews.llvm.org/D46682
llvm-svn: 332433
Fangrui Song [Wed, 16 May 2018 06:43:27 +0000 (06:43 +0000)]
[Unix] Indent ChangeStd{in,out}ToBinary.
llvm-svn: 332432
Mikael Holmen [Wed, 16 May 2018 06:36:11 +0000 (06:36 +0000)]
Remove unused variable introduced in r332336
The unused variable caused a compilation warning:
../lib/Target/X86/X86ISelLowering.cpp:34614:17: error: unused variable 'SMax' [-Werror,-Wunused-variable]
if (SDValue SMax = MatchMinMax(SMin, ISD::SMAX, C1))
^
1 error generated.
llvm-svn: 332431
Shoaib Meenai [Wed, 16 May 2018 04:52:18 +0000 (04:52 +0000)]
[ObjCARC] Prevent code motion into a catchswitch
A catchswitch must be the only non-phi instruction in its basic block;
attempting to move a retain or release into a catchswitch basic block
will result in invalid IR. Explicitly mark a CFG hazard in this case to
prevent the code motion.
Differential Revision: https://reviews.llvm.org/D46482
llvm-svn: 332430
JF Bastien [Wed, 16 May 2018 04:36:37 +0000 (04:36 +0000)]
Revert "Signal handling should be signal-safe"
Some bots don't have double-pointer width compare-and-exchange. Revert for now.q
llvm-svn: 332429
JF Bastien [Wed, 16 May 2018 04:30:00 +0000 (04:30 +0000)]
Signal handling should be signal-safe
Summary:
Before this patch, signal handling wasn't signal safe. This leads to real-world
crashes. It used ManagedStatic inside of signals, this can allocate and can lead
to unexpected state when a signal occurs during llvm_shutdown (because
llvm_shutdown destroys the ManagedStatic). It also used cl::opt without custom
backing storage. Some de-allocation was performed as well. Acquiring a lock in a
signal handler is also a great way to deadlock.
We can't just disable signals on llvm_shutdown because the signals might do
useful work during that shutdown. We also can't just disable llvm_shutdown for
programs (instead of library uses of clang) because we'd have to then mark the
pointers as not leaked and make sure all the ManagedStatic uses are OK to leak
and remain so.
Move all of the code to lock-free datastructures instead, and avoid having any
of them in an inconsistent state. I'm not trying to be fancy, I'm not using any
explicit memory order because this code isn't hot. The only purpose of the
atomics is to guarantee that a signal firing on the same or a different thread
doesn't see an inconsistent state and crash. In some cases we might miss some
state (for example, we might fail to delete a temporary file), but that's fine.
Note that I haven't touched any of the backtrace support despite it not
technically being totally signal-safe. When that code is called we know
something bad is up and we don't expect to continue execution, so calling
something that e.g. sets errno is the least of our problems.
A similar patch should be applied to lib/Support/Windows/Signals.inc, but that
can be done separately.
<rdar://problem/
28010281>
Reviewers: dexonsmith
Subscribers: aheejin, llvm-commits
Differential Revision: https://reviews.llvm.org/D46858
llvm-svn: 332428
Shiva Chen [Wed, 16 May 2018 02:57:26 +0000 (02:57 +0000)]
[DebugInfo] Only handle DBG_VALUE in InlineSpiller.
The instructions using registers should be DBG_VALUE and normal
instructions. Use isDebugValue() to filter out DBG_VALUE and add
an assert to ensure there is no other kind of debug instructions
using the registers.
Differential Revision: https://reviews.llvm.org/D46739
Patch by Hsiangkai Wang.
llvm-svn: 332427
Evgeny Stupachenko [Wed, 16 May 2018 02:48:50 +0000 (02:48 +0000)]
Fix LSR compile time hang.
Summary:
Limit number of reassociations in GenerateReassociationsImpl.
Reviewers: qcolombet, mkazantsev
Differential Revision: https://reviews.llvm.org/D46039
From: Evgeny Stupachenko <evstupac@gmail.com>
<evgeny.v.stupachenko@intel.com>
llvm-svn: 332426
Richard Smith [Wed, 16 May 2018 01:08:07 +0000 (01:08 +0000)]
Fix 32-bit buildbots.
llvm-svn: 332425
Chris Matthews [Wed, 16 May 2018 00:37:00 +0000 (00:37 +0000)]
remove output xml incase it is leftover from another run
llvm-svn: 332424
Chris Matthews [Wed, 16 May 2018 00:33:29 +0000 (00:33 +0000)]
Use not to catch unexpected pass as well as remove old test results
As per review feedback, make sure we rm temp files, and make the return
code checking for lit more specific.
llvm-svn: 332423
George Karpenkov [Wed, 16 May 2018 00:29:13 +0000 (00:29 +0000)]
[analyzer] Do not crash on callback for call_once passed by value
https://bugs.llvm.org/show_bug.cgi?id=37312
rdar://
40270582
Differential Revision: https://reviews.llvm.org/D46913
llvm-svn: 332422
Douglas Yung [Wed, 16 May 2018 00:27:43 +0000 (00:27 +0000)]
Revert commits r332160, r332164, r332236.
It was decided this is the wrong approach to fix this issue.
llvm-svn: 332421
Peter Collingbourne [Wed, 16 May 2018 00:21:47 +0000 (00:21 +0000)]
ARM: Remove unnecessary argument. NFCI.
IsLittleEndian is already a field of ARMAsmBackend.
llvm-svn: 332420
Peter Collingbourne [Wed, 16 May 2018 00:21:31 +0000 (00:21 +0000)]
ARM: Deduplicate code and remove unnecessary declaration. NFCI.
llvm-svn: 332419