Sam Clegg [Wed, 14 Nov 2018 18:36:24 +0000 (18:36 +0000)]
[WebAssembly] Add support for dylink section in object format
See https://github.com/WebAssembly/tool-conventions/blob/master/DynamicLinking.md.
Differential Revision: https://reviews.llvm.org/D54490
llvm-svn: 346880
Craig Topper [Wed, 14 Nov 2018 18:16:21 +0000 (18:16 +0000)]
[X86] Allow pmulh to be formed from narrow vXi16 vectors under -x86-experimental-vector-widening-legalization
Narrower vectors will be widened to 128 bits without changing the element size. And generic type legalization can already handle widening mulhu/mulhs.
Differential Revision: https://reviews.llvm.org/D54513
llvm-svn: 346879
Alexander Richardson [Wed, 14 Nov 2018 17:58:55 +0000 (17:58 +0000)]
[libcxx] [test] Fix running tests on macOS with python3
Summary:
The result of subprocess.check_output() is bytes in python3 which we need
to convert to str(). Simplify this by using the executeCommand() helper.
Reviewers: ldionne, EricWF
Reviewed By: ldionne
Subscribers: christof, libcxx-commits
Differential Revision: https://reviews.llvm.org/D54522
llvm-svn: 346878
Sean Fertile [Wed, 14 Nov 2018 17:56:43 +0000 (17:56 +0000)]
[PPC64] Long branch thunks.
On PowerPC64, when a function call offset is too large to encode in a call
instruction the address is stored in a table in the data segment. A thunk is
used to load the branch target address from the table relative to the
TOC-pointer and indirectly branch to the callee. When linking position-dependent
code the addresses are stored directly in the table, for position-independent
code the table is allocated and filled in at load time by the dynamic linker.
For position-independent code the branch targets could have gone in the .got.plt
but using the .branch_lt section for both position dependent and position
independent binaries keeps it consitent and helps keep this PPC64 specific logic
seperated from the target-independent code handling the .got.plt.
Differential Revision: https://reviews.llvm.org/D53408
llvm-svn: 346877
Sean Fertile [Wed, 14 Nov 2018 17:56:38 +0000 (17:56 +0000)]
[NFC] Change address __tls_getaddr is defined at so it does not need a thunk.
Minor update to a ppc64 tls test so that it won't need to use a thunk once the
range-extending thunk patch is landed.
llvm-svn: 346876
Mandeep Singh Grang [Wed, 14 Nov 2018 17:55:07 +0000 (17:55 +0000)]
[InstCombine] Remove a couple of asserts based on incorrect assumptions
Summary:
These asserts are based on the assumption that the order of true/false operands in a select and those in the compare would always be the same.
This fixes PR39595.
Reviewers: craig.topper, spatel, dmgreen
Reviewed By: craig.topper
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D54359
llvm-svn: 346874
Zachary Turner [Wed, 14 Nov 2018 17:22:09 +0000 (17:22 +0000)]
Fix some compilation failures introduced in recent patches.
This fixes two compilation failures:
1) Designated initializers are C++20. We can't use them in LLVM.
2) thread_result_t is not a pointer type on all platforms, so
returning nullptr is an error.
llvm-svn: 346873
Kadir Cetinkaya [Wed, 14 Nov 2018 17:07:39 +0000 (17:07 +0000)]
[clangd] Delete unused includes.
llvm-svn: 346872
Sanjay Patel [Wed, 14 Nov 2018 16:03:36 +0000 (16:03 +0000)]
[InstCombine] fix formatting for matchBSwap(); NFC
We should have a similar function for matching rotate and/or
funnel shift, so tidy up the related existing call.
llvm-svn: 346871
Florian Hahn [Wed, 14 Nov 2018 15:58:40 +0000 (15:58 +0000)]
[VPlan, SLP] Use SmallPtrSet for Candidates.
This slightly improves the candidate handling in getBest().
llvm-svn: 346870
John Brawn [Wed, 14 Nov 2018 15:27:07 +0000 (15:27 +0000)]
[SimplifyCFG] Regenerate preserve-branchweights.ll test. NFC
Regenerate this test using update_test_checks.py in preparation for an
upcomming commit, to make it not depend on the names of instructions.
llvm-svn: 346869
Simon Pilgrim [Wed, 14 Nov 2018 15:04:08 +0000 (15:04 +0000)]
[TTI] getOperandInfo - a broadcast shuffle means the result is OK_UniformValue
llvm-svn: 346868
Pavel Labath [Wed, 14 Nov 2018 14:58:36 +0000 (14:58 +0000)]
Move DataExtractorTest to unittests/Utility
The DataExtractor class itself was moved to Utility some time ago, but
it seems this was not reflected in the location of the test code. Fix
that.
llvm-svn: 346867
David Bolvansky [Wed, 14 Nov 2018 14:27:51 +0000 (14:27 +0000)]
Reverted D52835 to fix review comments
llvm-svn: 346866
David Bolvansky [Wed, 14 Nov 2018 14:24:33 +0000 (14:24 +0000)]
[Diagnostics] Check integer to floating point number implicit conversions
Summary:
GCC already catches these situations so we should handle it too.
GCC warns in C++ mode only (does anybody know why?). I think it is useful in C mode too.
Reviewers: rsmith, erichkeane, aaron.ballman, efriedma, xbolva00
Reviewed By: xbolva00
Subscribers: efriedma, craig.topper, scanon, cfe-commits
Differential Revision: https://reviews.llvm.org/D52835
llvm-svn: 346865
Bruno Ricci [Wed, 14 Nov 2018 14:19:34 +0000 (14:19 +0000)]
[AST][NFC] Order the bit-field classes of Stmt like in StmtNodes.td
Reorder the bit-field classes and the members of the anonymous union
so that they both match the order in StmtNodes.td.
There is already a fair amount of them, and this is not going to
improve. Therefore lets try to keep some order here.
Strictly NFC.
llvm-svn: 346864
Peter Smith [Wed, 14 Nov 2018 13:53:47 +0000 (13:53 +0000)]
[AArch64] Fix resolution of R_PLT_PAGE RelExpr
The R_AARCH64_ADR_PREL_PG_HI21 relocation type is given the R_PAGE_PC
RelExpr. This can be transformed to R_PLT_PAGE_PC via toPlt().
Unfortunately the resolution is identical to R_PAGE_PC so instead of
getting the address of the PLT entry we get the address of the symbol
which may not be correct in the case of static ifuncs. The fix is to
handle the cases separately and use getPltVA() + A with R_PLT_PAGE_PC.
Differential Revision: https://reviews.llvm.org/D54474
llvm-svn: 346863
Andrey Churbanov [Wed, 14 Nov 2018 13:49:41 +0000 (13:49 +0000)]
Fix for bugzilla https://bugs.llvm.org/show_bug.cgi?id=39137.
Do not write to internal structure if it keeps same value.
Differential Revision: https://reviews.llvm.org/D54305
llvm-svn: 346862
Paul Robinson [Wed, 14 Nov 2018 13:43:19 +0000 (13:43 +0000)]
Document how to comment an actual parameter.
Differential Revision: https://reviews.llvm.org/D54446
llvm-svn: 346861
Florian Hahn [Wed, 14 Nov 2018 13:33:44 +0000 (13:33 +0000)]
[VPlan] Remove LLVM_DEBUG from VPlanSlp::dumpBundle.
The caller should take care of only calling it with debug enabled.
llvm-svn: 346860
Simon Pilgrim [Wed, 14 Nov 2018 13:23:28 +0000 (13:23 +0000)]
[TTI] Pull out repeated 'ConcreteTTI' static_casts. NFCI.
llvm-svn: 346859
Florian Hahn [Wed, 14 Nov 2018 13:21:26 +0000 (13:21 +0000)]
[VPlan] Update ifdef.
llvm-svn: 346858
Florian Hahn [Wed, 14 Nov 2018 13:11:49 +0000 (13:11 +0000)]
[VPlan, SLP] Add simple SLP analysis on top of VPlan.
This patch adds an initial implementation of the look-ahead SLP tree
construction described in 'Look-Ahead SLP: Auto-vectorization in the Presence
of Commutative Operations, CGO 2018 by Vasileios Porpodas, Rodrigo C. O. Rocha,
Luís F. W. Góes'.
It returns an SLP tree represented as VPInstructions, with combined
instructions represented as a single, wider VPInstruction.
This initial version does not support instructions with multiple
different users (either inside or outside the SLP tree) or
non-instruction operands; it won't generate any shuffles or
insertelement instructions.
It also just adds the analysis that builds an SLP tree rooted in a set
of stores. It does not include any cost modeling or memory legality
checks. The plan is to integrate it with VPlan based cost modeling, once
available and to only apply it to operations that can be widened.
A follow-up patch will add a support for replacing instructions in a
VPlan with their SLP counter parts.
Reviewers: Ayal, mssimpso, rengolin, mkuper, hfinkel, hsaito, dcaballe, vporpo, RKSimon, ABataev
Reviewed By: rengolin
Differential Revision: https://reviews.llvm.org/D4949
llvm-svn: 346857
Aaron Ballman [Wed, 14 Nov 2018 13:03:50 +0000 (13:03 +0000)]
Adding myself as the code owner for clang-query as discussed in https://reviews.llvm.org/D54453.
llvm-svn: 346856
George Rimar [Wed, 14 Nov 2018 13:01:15 +0000 (13:01 +0000)]
[LLDB] - Recommit r346848 "[LLDB] - Support the single file split DWARF.".
Test cases were updated to not use the local compilation dir which
is different between development pc and build bots.
Original commit message:
[LLDB] - Support the single file split DWARF.
DWARF5 spec describes a single file split dwarf case
(when .dwo sections are in the .o files).
Problem is that LLDB does not work correctly in that case.
The issue is that, for example, both .debug_info and .debug_info.dwo
has the same type: eSectionTypeDWARFDebugInfo. And when code searches
section by type it might find the regular debug section
and not the .dwo one.
The patch fixes that. With it, LLDB is able to work with
output compiled with -gsplit-dwarf=single flag correctly.
Differential revision: https://reviews.llvm.org/D52403
llvm-svn: 346855
Simon Pilgrim [Wed, 14 Nov 2018 12:24:50 +0000 (12:24 +0000)]
[CostModel] Add generic expansion funnel shift cost support
Add support for the expansion of funnelshift/rotates to getIntrinsicInstrCost.
This also required us to move the X86 fshl/fshr costs to the same place as the rotates to avoid expansion and get correct scalarization vs vectorization costs.
llvm-svn: 346854
George Rimar [Wed, 14 Nov 2018 12:04:31 +0000 (12:04 +0000)]
Revert r346848 "[LLDB] - Support the single file split DWARF."
It broke BB:
http://green.lab.llvm.org/green/job/lldb-cmake/12522/testReport/junit/LLDB/Breakpoint/single_file_split_dwarf_test/
llvm-svn: 346853
Haojian Wu [Wed, 14 Nov 2018 11:55:45 +0000 (11:55 +0000)]
[clangd] Replace StringRef in SymbolLocation with a char pointer.
Summary:
This would save us 8 bytes per ref, and buy us ~40MB in total
for llvm index (from ~300MB to ~260 MB).
The char pointer must be null-terminated, and llvm::StringSaver
guarantees it.
Reviewers: sammccall
Subscribers: ilya-biryukov, ioeric, MaskRay, jkorous, arphaman, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D53427
llvm-svn: 346852
Xing GUO [Wed, 14 Nov 2018 11:30:34 +0000 (11:30 +0000)]
[llvm-objdump] Improve ELF file type checking statements (D54509)
llvm-svn: 346851
Simon Pilgrim [Wed, 14 Nov 2018 11:26:35 +0000 (11:26 +0000)]
[X86][AVX512] Remove constant pool shuffle decoding from SelectionDAG
This patch removes the last use of the constant pool shuffle decode helper and consistently uses the 'getTargetShuffleMaskIndices' versions instead. The constant pool versions are now purely used for assembly comments.
The avx512vbmi intrinsic upgrades had to be altered as they were being decoded as broadcasts, similar to what I fixed in rL346032. I don't think the change is critical - although its annoying that we lose the {k}{z} instruction test coverage as they are tricky to generate....
Differential Revision: https://reviews.llvm.org/D54083
llvm-svn: 346850
Pavel Labath [Wed, 14 Nov 2018 11:12:40 +0000 (11:12 +0000)]
Fix a crash when parsing incorrect DWARF
Summary:
While parsing a childless compile unit DIE we could crash if the DIE was
followed by any extra data (such as a superfluous end-of-children
marker). This happened because the break-on-depth=0 check was performed
only when parsing the null DIE, which was not correct because with a
childless root DIE, we could reach the end of the unit without ever
encountering the null DIE.
If the compile unit contribution ended directly after the CU DIE,
everything would be fine as we would terminate parsing due to reaching
EOF. However, if the contribution contained extra data (perhaps a
superfluous end-of-children marker), we would crash because we would
treat that data as the begging of another compile unit.
This fixes the crash by moving the depth=0 check to a more generic
place, and also adds a regression test.
Reviewers: clayborg, jankratochvil, JDevlieghere
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D54417
llvm-svn: 346849
George Rimar [Wed, 14 Nov 2018 10:35:14 +0000 (10:35 +0000)]
[LLDB] - Support the single file split DWARF.
DWARF5 spec describes a single file split dwarf case
(when .dwo sections are in the .o files).
Problem is that LLDB does not work correctly in that case.
The issue is that, for example, both .debug_info and .debug_info.dwo
has the same type: eSectionTypeDWARFDebugInfo. And when code searches
section by type it might find the regular debug section
and not the .dwo one.
The patch fixes that. With it, LLDB is able to work with
output compiled with -gsplit-dwarf=single flag correctly.
Differential revision: https://reviews.llvm.org/D52296
llvm-svn: 346848
Sam McCall [Wed, 14 Nov 2018 10:33:30 +0000 (10:33 +0000)]
[AST] Allow limiting the scope of common AST traversals (getParents, RAV).
Summary:
The goal is to allow analyses such as clang-tidy checks to run on a
subset of the AST, e.g. "only on main-file decls" for interactive tools.
Today, these become "problematically global" by running RecursiveASTVisitors
rooted at the TUDecl, or by navigating up via ASTContext::getParent().
The scope is restricted using a set of top-level-decls that RecursiveASTVisitors
should be rooted at. This also applies to the visitor that populates the
parent map, and so the top-level-decls are considered to have no parents.
This patch makes the traversal scope a mutable property of ASTContext.
The more obvious way to do this is to pass the top-level decls to
relevant functions directly, but this has some problems:
- it's error-prone: accidentally mixing restricted and unrestricted
scopes is a performance trap. Interleaving multiple analyses is
common (many clang-tidy checks run matchers or RAVs from matcher callbacks)
- it doesn't map well to the actual use cases, where we really do want
*all* traversals to be restricted.
- it involves a lot of plumbing in parts of the code that don't care
about traversals.
This approach was tried out in D54259 and D54261, I wanted to like it
but it feels pretty awful in practice.
Caveats: to get scope-limiting behavior of RecursiveASTVisitors, callers
have to call the new TraverseAST(Ctx) function instead of TraverseDecl(TU).
I think this is an improvement to the API regardless.
Reviewers: klimek, ioeric
Subscribers: mgorny, cfe-commits
Differential Revision: https://reviews.llvm.org/D54309
llvm-svn: 346847
Martin Storsjo [Wed, 14 Nov 2018 10:26:47 +0000 (10:26 +0000)]
[COFF] Fix a longstanding typo in a variable name. NFC.
llvm-svn: 346846
Heejin Ahn [Wed, 14 Nov 2018 10:11:22 +0000 (10:11 +0000)]
[WebAssembly] Make sure event-section XFAILs for build options
rL346840 temporarily marked event-section.ll as XFAIL because it was
failing for builds with LLVM_ENABLE_EXPENSIVE_CHECKS turned on, but
to make sure it XFAILs even without LLVM_ENABLE_EXPENSIVE_CHECKS on we
need this `-verify-machineinstrs` flag, which was missing in the
previous commit.
llvm-svn: 346845
Sven van Haastregt [Wed, 14 Nov 2018 10:05:28 +0000 (10:05 +0000)]
Print newline after banner for ModulePass
Before this commit, `llc -print-after-all` would print something like:
*** IR Dump After Pre-ISel Intrinsic Lowering ***; ModuleID = ...
Emit a newline such that ModuleID appears on a line by its own.
llvm-svn: 346844
Florian Hahn [Wed, 14 Nov 2018 10:04:30 +0000 (10:04 +0000)]
Recommit r346483: [CallSiteSplitting] Only record conditions up to the IDom(call site).
The underlying problem causing the expensive-check failure was fixed in
rL346769.
llvm-svn: 346843
Diana Picus [Wed, 14 Nov 2018 09:58:17 +0000 (09:58 +0000)]
Fix r346747 and r346796
Require x86 for the tests in order to fix non-x86 bots. This seems to be
the case for all other tests in that directory.
llvm-svn: 346842
Haojian Wu [Wed, 14 Nov 2018 09:53:45 +0000 (09:53 +0000)]
Suppress a "-Wliteral-conversion" compiler warning.
error: implicit conversion from 'double' to 'uint64_t' (aka 'unsigned long') changes value from -0 to 0 [-Werror,-Wliteral-conversion]
llvm-svn: 346841
Heejin Ahn [Wed, 14 Nov 2018 09:51:21 +0000 (09:51 +0000)]
[WebAssembly] Temporarily disable event-section.ll
This test is failing in builds with LLVM_ENABLE_EXPENSIVE_CHECKS after
rL346825 not because of the patch but due to a pre-existing codegen
problem. Marking this as XFAIL temporarily until the bug is fixed.
llvm-svn: 346840
Haojian Wu [Wed, 14 Nov 2018 09:42:28 +0000 (09:42 +0000)]
Fix the "make_unique is ambiguous" compiler error.
llvm-svn: 346839
Alexey Sotkin [Wed, 14 Nov 2018 09:40:05 +0000 (09:40 +0000)]
[OpenCL] Fix invalid address space generation for clk_event_t
Summary:
Addrspace(32) was generated when putting 0 in clk_event_t * event_ret
parameter for enqueue_kernel function.
Patch by Viktoria Maksimova
Reviewers: Anastasia, yaxunl, AlexeySotkin
Reviewed By: Anastasia, AlexeySotkin
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D53809
llvm-svn: 346838
George Rimar [Wed, 14 Nov 2018 09:22:16 +0000 (09:22 +0000)]
[Clang] - Add '-gsplit-dwarf[=split,=single]' version for '-gsplit-dwarf' option.
The DWARF5 specification says(Appendix F.1):
"The sections that do not require relocation, however, can be
written to the relocatable object (.o) file but ignored by the
linker or they can be written to a separate DWARF object (.dwo)
file that need not be accessed by the linker."
The first part describes a single file split DWARF feature and there
is no way to trigger this behavior atm.
Fortunately, no many changes are required to keep *.dwo sections
in a .o, the patch does that.
Differential revision: https://reviews.llvm.org/D52296
llvm-svn: 346837
Sam McCall [Wed, 14 Nov 2018 09:05:19 +0000 (09:05 +0000)]
[clangd] Improve code completion for ObjC methods
Summary:
Previously code completion did not work well for Objective-C methods
which contained multiple arguments as clangd did not expect to see
multiple typed-text chunks when handling code completion.
Note that even with this change, we do not consider selector fragments
from previous arguments to be part of the signature (although we
could in the future).
Reviewers: sammccall
Reviewed By: sammccall
Subscribers: ilya-biryukov, ioeric, MaskRay, jkorous, arphaman, jfb, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D53934
llvm-svn: 346836
Roman Lebedev [Wed, 14 Nov 2018 09:01:08 +0000 (09:01 +0000)]
[clang-tidy] Avoid C arrays check
Summary:
[[ https://bugs.llvm.org/show_bug.cgi?id=39224 | PR39224 ]]
As discussed, we can't always do the transform automatically due to that array-to-pointer decay of C array.
In order to detect whether we can do said transform, we'd need to be able to see all usages of said array,
which is, i would say, rather impossible if e.g. it is in the header.
Thus right now no fixit exists.
Exceptions: `extern "C"` code.
References:
* [[ https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#es27-use-stdarray-or-stack_array-for-arrays-on-the-stack | CPPCG ES.27: Use std::array or stack_array for arrays on the stack ]]
* [[ https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#slcon1-prefer-using-stl-array-or-vector-instead-of-a-c-array | CPPCG SL.con.1: Prefer using STL array or vector instead of a C array ]]
* HICPP `4.1.1 Ensure that a function argument does not undergo an array-to-pointer conversion`
* MISRA `5-2-12 An identifier with array type passed as a function argument shall not decay to a pointer`
Reviewers: aaron.ballman, JonasToth, alexfh, hokein, xazax.hun
Reviewed By: JonasToth
Subscribers: Eugene.Zelenko, mgorny, rnkovacs, cfe-commits
Tags: #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D53771
llvm-svn: 346835
Craig Topper [Wed, 14 Nov 2018 07:51:26 +0000 (07:51 +0000)]
[X86] Add -x86-experimental-vector-widening command lines to pmulh.ll
I've only added sse2 and sse4.1 variants as I'm only interested in the two v4i16 tests and I don't expect that to different with AVX other than a v prefix.
llvm-svn: 346834
David Blaikie [Wed, 14 Nov 2018 07:19:21 +0000 (07:19 +0000)]
Correctly instantiate `iterator_adaptor_base` when defining `pointer_iterator`
The definition of `pointer_iterator` omits what should be a `iterator_traits::<>::iterator_category` parameter from `iterator_adaptor_base`. As a result, iterators based on `pointer_iterator` always have defaulted value types and the wrong iterator category.
The definition of `pointee_iterator` just a few lines above does this correctly.
This resolves [[ https://bugs.llvm.org/show_bug.cgi?id=39617 | bug 39617 ]].
Patch by Dylan MacKenzie!
Reviewers: dblaikie
Differential Revision: https://reviews.llvm.org/D54377
llvm-svn: 346833
Yaxun Liu [Wed, 14 Nov 2018 04:47:31 +0000 (04:47 +0000)]
[HIP] Fix device only compilation
Fix a bug causing host code being compiled when --cude-device-only is set.
Differential Revision: https://reviews.llvm.org/D54496
llvm-svn: 346828
Petr Hosek [Wed, 14 Nov 2018 04:06:47 +0000 (04:06 +0000)]
[CMake] Include clang-apply-replacements in Fuchsia toolchain
This is needed for run-clang-tidy.py.
Differential Revision: https://reviews.llvm.org/D54505
llvm-svn: 346827
Stephan T. Lavavej [Wed, 14 Nov 2018 03:06:06 +0000 (03:06 +0000)]
[libcxx] [test] Strip trailing whitespace. NFC.
llvm-svn: 346826
Heejin Ahn [Wed, 14 Nov 2018 02:46:21 +0000 (02:46 +0000)]
[WebAssembly] Add support for the event section
Summary:
This adds support for the 'event section' specified in the exception
handling proposal. (This was named 'exception section' first, but later
renamed to 'event section' to take possibilities of other kinds of
events into consideration. But currently we only store exception info in
this section.)
The event section is added between the global section and the export
section. This is for ease of validation per request of the V8 team.
This patch:
- Creates the event symbol type, which is a weak symbol
- Makes 'throw' instruction take the event symbol '__cpp_exception'
- Adds relocation support for events
- Adds WasmObjectWriter / WasmObjectFile (Reader) support
- Adds obj2yaml / yaml2obj support
- Adds '.eventtype' printing support
Reviewers: dschuff, sbc100, aardappel
Subscribers: jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D54096
llvm-svn: 346825
Zi Xuan Wu [Wed, 14 Nov 2018 02:34:45 +0000 (02:34 +0000)]
[PowerPC] Enhance the selection(ISD::VSELECT) of vector type
To make ISD::VSELECT available(legal) so long as there are altivec instruction, otherwise it's default behavior is expanding,
which is legalized at type-legalization phase. Use xxsel to match vselect if vsx is open, or use vsel.
Differential Revision: https://reviews.llvm.org/D49531
llvm-svn: 346824
Reid Kleckner [Wed, 14 Nov 2018 01:47:32 +0000 (01:47 +0000)]
Revert r346810 "Preserve loop metadata when splitting exit blocks"
It broke the Windows self-host:
http://lab.llvm.org:8011/builders/clang-x64-windows-msvc/builds/1457
llvm-svn: 346823
Alex Lorenz [Wed, 14 Nov 2018 01:08:03 +0000 (01:08 +0000)]
[HeaderSearch] loadSubdirectoryModuleMaps should respect -working-directory
Include search paths can be relative paths. The loadSubdirectoryModuleMaps function
should account for that and respect the -working-directory parameter given to Clang.
rdar://
46045849
Differential Revision: https://reviews.llvm.org/D54503
llvm-svn: 346822
Eli Friedman [Wed, 14 Nov 2018 00:39:29 +0000 (00:39 +0000)]
[CodeGen] Fix forward scan in MachineBasicBlock::computeRegisterLiveness.
The scan was incorrectly skipping the first instruction, so a register
could appear to be dead when it was actually live. This eventually leads
to a machine verifier failure and miscompile in arm-ldst-opt.
Differential Revision: https://reviews.llvm.org/D54491
llvm-svn: 346821
Petr Hosek [Wed, 14 Nov 2018 00:09:26 +0000 (00:09 +0000)]
[CMake] Passthrough CFLAGS when checking the compiler-rt path
This is needed when cross-compiling for a different target since
CFLAGS may contain additional flags like -resource-dir which
change the location in which compiler-rt builtins are found.
Differential Revision: https://reviews.llvm.org/D54371
llvm-svn: 346820
Tatyana Krasnukha [Wed, 14 Nov 2018 00:08:34 +0000 (00:08 +0000)]
Complete reverting r346191
llvm-svn: 346819
Tatyana Krasnukha [Tue, 13 Nov 2018 23:59:25 +0000 (23:59 +0000)]
Complete reverting r346191
llvm-svn: 346818
Reid Kleckner [Tue, 13 Nov 2018 23:44:39 +0000 (23:44 +0000)]
[PDB] Simplify symbol handling code, NFC
- Make mergeSymbolRecords a method of PDBLinker to reduce the number of
parameters it needs.
- Remove a stale FIXME comment about error handling. We already drop
unknown symbol records, log them, and continue.
- Update a comment about why we're copying the symbol record. We do it
to realign the record. We can already mutate the symbol record memory,
it's memory allocated by relocateDebugChunk.
- Avoid the extra `CVSymbol NewSym` variable. We can mutate Sym in
place, which is best, since we're mutating the underlying record anyway.
llvm-svn: 346817
Jessica Paquette [Tue, 13 Nov 2018 23:41:31 +0000 (23:41 +0000)]
[MachineOutliner][NFC] Use flags set in all candidates to check for calls
If we keep track of if the ContainsCalls bit is set in the MBB flags for each
candidate, then we have a better chance of not checking the candidate for calls
at all.
This saves quite a few checks in some CTMark tests (~200 in Bullet, for
example.)
llvm-svn: 346816
Adrian Prantl [Tue, 13 Nov 2018 23:31:25 +0000 (23:31 +0000)]
Make dsymutil more robust when parsing load commands.
rdar://problem/
45883463
llvm-svn: 346815
Sanjay Patel [Tue, 13 Nov 2018 23:27:23 +0000 (23:27 +0000)]
[InstCombine] fold funnel shift amount based on demanded bits
The shift amount of a funnel shift is modulo the scalar bitwidth:
http://llvm.org/docs/LangRef.html#llvm-fshl-intrinsic
...so we can use demanded bits analysis on that operand to simplify it
when we have a power-of-2 bitwidth.
This is another step towards canonicalizing {shift/shift/or} to the
intrinsics in IR.
Differential Revision: https://reviews.llvm.org/D54478
llvm-svn: 346814
Matthew Voss [Tue, 13 Nov 2018 23:21:00 +0000 (23:21 +0000)]
Make the ExpandTilde unit test expect "\" (not "/") on Win32
llvm-svn: 346813
Adrian Prantl [Tue, 13 Nov 2018 23:14:37 +0000 (23:14 +0000)]
Fix a bug in the parsing of the LC_BUILD_VERSION Mach-O load command.
LC_BUILD_VERSION records are of variable length. The original code
would use uninitialized memory when the size of a record was exactly 24.
rdar://problem/
46032185
llvm-svn: 346812
Eric Fiselier [Tue, 13 Nov 2018 23:08:31 +0000 (23:08 +0000)]
Add cxx-benchmark-unittests target
This patch adds the cxx-benchmark-unittests target so we can start
getting test coverage on the benchmarks, including building with
sanitizers. Because we're only looking for test-coverage, the benchmarks
run for the shortest time possible, and in parallel.
The target is excluded from all by default. It only
builds and runs the libcxx configurations of the benchmarks, and not
any versions built against the systems native standard library.
llvm-svn: 346811
Craig Topper [Tue, 13 Nov 2018 23:06:49 +0000 (23:06 +0000)]
Preserve loop metadata when splitting exit blocks
LoopUtils.cpp contains a utility that splits an loop exit block, so that the new block contains only edges coming from the loop. In the case of nested loops, the exit path for the inner loop might also be the back-edge of the outer loop. The new block which is inserted on this path, is now a latch for the outer loop, and it needs to hold the loop metadata for the outer loop. (The test case gives a more concrete view of the situation.)
Patch by Chang Lin (clin1)
Differential Revision: https://reviews.llvm.org/D53876
llvm-svn: 346810
Jessica Paquette [Tue, 13 Nov 2018 23:01:34 +0000 (23:01 +0000)]
[MachineOutliner][NFC] Use MBB flags to avoid call checks in getOutliningInfo
We already determine a bunch of information about an MBB in
getMachineOutlinerMBBFlags. We can reuse that information to avoid calculating
things that must be false/true.
The first thing we can easily check is if an outlined sequence could ever
contain calls. There's no reason to walk over the outlined range, checking for
calls, if we already know that there are no calls in the block containing the
sequence.
llvm-svn: 346809
Eric Fiselier [Tue, 13 Nov 2018 23:00:55 +0000 (23:00 +0000)]
Fix "use of" uninitialized memory in benchmark.
An argument to DoNotOptimize was not fully initialized, which caused
msan to complain.
llvm-svn: 346808
Sanjay Patel [Tue, 13 Nov 2018 22:47:24 +0000 (22:47 +0000)]
[InstCombine] canonicalize rotate patterns with cmp/select
The cmp+branch variant of this pattern is shown in:
https://bugs.llvm.org/show_bug.cgi?id=34924
...and as discussed there, we probably can't transform
that without a rotate intrinsic. We do have that now
via funnel shift, but we're not quite ready to
canonicalize IR to that form yet. The case with 'select'
should already be transformed though, so that's this patch.
The sequence with negation followed by masking is what we
use in the backend and partly in clang (though that part
should be updated).
https://rise4fun.com/Alive/TplC
%cmp = icmp eq i32 %shamt, 0
%sub = sub i32 32, %shamt
%shr = lshr i32 %x, %shamt
%shl = shl i32 %x, %sub
%or = or i32 %shr, %shl
%r = select i1 %cmp, i32 %x, i32 %or
=>
%neg = sub i32 0, %shamt
%masked = and i32 %shamt, 31
%maskedneg = and i32 %neg, 31
%shl2 = lshr i32 %x, %masked
%shr2 = shl i32 %x, %maskedneg
%r = or i32 %shl2, %shr2
llvm-svn: 346807
Matt Arsenault [Tue, 13 Nov 2018 22:30:35 +0000 (22:30 +0000)]
OpenCL: Don't warn on v printf modifier
This avoids spurious warnings, but could use
a lot of work. For example the number of vector
elements is not verified, and the passed
value type is not checked.
Fixes bug 39486
llvm-svn: 346806
Marshall Clow [Tue, 13 Nov 2018 22:26:03 +0000 (22:26 +0000)]
Mark #2184 as complete; the tests are fine. (I thought that they were wrong before)
llvm-svn: 346805
George Karpenkov [Tue, 13 Nov 2018 22:17:16 +0000 (22:17 +0000)]
[lsan] [FIXUP] Fixup for reviews.llvm.org/D54484
After the change, the tests started failing, as skipped sections can be
equal in size to kMaxSegName.
Changing `<` to `<=` to address the off-by-one problem.
llvm-svn: 346804
Jessica Paquette [Tue, 13 Nov 2018 22:16:27 +0000 (22:16 +0000)]
[MachineOutliner][NFC] Exit getOutliningType if there are < 2 candidates
Since we never outline anything with fewer than 2 occurrences, there's no
reason to compute cost model information if there's less than that.
llvm-svn: 346803
David Greene [Tue, 13 Nov 2018 21:38:45 +0000 (21:38 +0000)]
[Driver] Support g++ headers in include/g++
ray's gcc installation puts C++ headers in PREFIX/include/g++ without
indicating a gcc version at all. Typically this is because the version
is encoded somewhere in PREFIX.
Differential Revision: https://reviews.llvm.org/D53770
llvm-svn: 346802
Bruno Ricci [Tue, 13 Nov 2018 21:33:22 +0000 (21:33 +0000)]
[AST] Revert r346793 and r346781
This somehow breaks the msan bots. Revert while I figure it out.
llvm-svn: 346801
Stanislav Mekhanoshin [Tue, 13 Nov 2018 21:18:21 +0000 (21:18 +0000)]
[AMDGPU] combine extractelement into several selects
An extractelement with non-constant index will be lowered either to
scratch or movrel loop in most cases. This patch converts such
instruction into a set of selects if vector size is not too big.
Differential Revision: https://reviews.llvm.org/D54351
llvm-svn: 346800
Louis Dionne [Tue, 13 Nov 2018 21:13:10 +0000 (21:13 +0000)]
[NFC] Mark LWG3128 and LWG3132 as requiring no work
Those LWG issues were adopted in San Diego and require no work
on our side.
llvm-svn: 346799
Alina Sbirlea [Tue, 13 Nov 2018 21:12:49 +0000 (21:12 +0000)]
[MemorySSA] Create query after checking if instruction is a fence.
The alternative is checking if I is a fence in the Query constructor, so
as to not attempt to get a non-existent MemoryLocation.
llvm-svn: 346798
Fangrui Song [Tue, 13 Nov 2018 20:59:25 +0000 (20:59 +0000)]
[AsmPrinter] Fix DebugInfo/X86/gnu-public-names.ll after rL346790
llvm-svn: 346797
Fangrui Song [Tue, 13 Nov 2018 20:49:36 +0000 (20:49 +0000)]
[ELF] Add a better test for the multi-CU .gdb_index bug that D54361 fixed
gdb-index-multiple-cu-2.s puts the symbol in question to another object file %t1.o, so that its CuIndex is affected by the number of CUs in %t.o
Also change `Kind:` in a comment to `Attributes:` as a follow-up of D54480 and D54481
llvm-svn: 346796
Stanislav Mekhanoshin [Tue, 13 Nov 2018 20:26:27 +0000 (20:26 +0000)]
Fixed DAGTypeLegalizer::SplitVecOp_EXTRACT_VECTOR_ELT i1 handling
Legalizer used to request an ext load from i8 to i1 when promoting
vector element type to i8. Fixed.
Differential Revision: https://reviews.llvm.org/D54440
llvm-svn: 346795
Fangrui Song [Tue, 13 Nov 2018 20:25:51 +0000 (20:25 +0000)]
[ELF] Rename NameTypeEntry to NameAttrEntry and its field "Type" to CuIndexAndAttrs
Summary:
NameTypeEntry::Type is a bit-packed value of CU index+attributes (https://sourceware.org/gdb//onlinedocs/gdb/Index-Section-Format.html), which is named cu_index_and_attrs in a local variable in gdb/dwarf2read.c:dw2_symtab_iter_next
The new name CuIndexAndAttrs is more meaningful.
Reviewers: ruiu, dblaikie, espindola
Reviewed By: dblaikie
Subscribers: emaste, aprantl, arichardson, JDevlieghere, arphaman, llvm-commits
Differential Revision: https://reviews.llvm.org/D54481
llvm-svn: 346794
Bruno Ricci [Tue, 13 Nov 2018 20:23:11 +0000 (20:23 +0000)]
[AST][NFC] Order the bit-field classes of Stmt like in StmtNodes.td
Reorder the bit-field classes and the members of the anonymous union
so that they both match the order in StmtNodes.td.
There is already a fair amount of them, and this is not going to
improve. Therefore lets try to keep some order here.
Strictly NFC.
llvm-svn: 346793
George Karpenkov [Tue, 13 Nov 2018 20:19:38 +0000 (20:19 +0000)]
[lsan] [NFC] Change ARRAY_SIZE to internal_strnlen
Calling ARRAY_SIZE on a char* will not actually compute it's size, but just the pointer size.
A new Clang warning enabled by default warns about this.
Replaced the call with internal_strnlen.
Differential Revision: https://reviews.llvm.org/D54484
llvm-svn: 346792
Nico Weber [Tue, 13 Nov 2018 20:18:26 +0000 (20:18 +0000)]
[MS Demangler] Print public:, protected:, private: if set in FunctionClass or a variable's StorageClass.
undname prints them, and the information is in the decorated name, so we probably shouldn't lose it when undecorating.
I spot-checked a few of the funnier-looking outputs, and undname has the same output.
Differential Revision: https://reviews.llvm.org/D54396
llvm-svn: 346791
Fangrui Song [Tue, 13 Nov 2018 20:18:08 +0000 (20:18 +0000)]
[AsmPrinter] Rename a comment of .debug_gnu_pubnames entry
Summary:
The comment refers to the field as "Kind:". However, in gdb,
https://sourceware.org/gdb//onlinedocs/gdb/Index-Section-Format.html names it "attributes",
gdb/dwarf2read.c:dw2_symtab_iter_next refers to the whole value as "cu_index_and_attrs"
Change it to `Attributes:` for consistency.
Reviewers: dblaikie
Reviewed By: dblaikie
Subscribers: aprantl, JDevlieghere, arphaman, llvm-commits
Differential Revision: https://reviews.llvm.org/D54480
llvm-svn: 346790
David Blaikie [Tue, 13 Nov 2018 20:08:13 +0000 (20:08 +0000)]
DebugInfo: Add a driver flag for DWARF debug_ranges base address specifier use.
Summary:
This saves a lot of relocations in optimized object files (at the cost
of some cost/increase in linked executable bytes), but gold's 32 bit
gdb-index support has a bug (
https://sourceware.org/bugzilla/show_bug.cgi?id=21894 ) so we can't
switch to this unconditionally. (& even if it weren't for that bug, one
might argue that some users would want to optimize in one direction or
the other - prioritizing object size or linked executable size)
Differential Revision: https://reviews.llvm.org/D54243
llvm-svn: 346789
David Blaikie [Tue, 13 Nov 2018 20:08:10 +0000 (20:08 +0000)]
DebugInfo: Add a CU metadata attribute for use of DWARF ranges base address specifiers
Summary:
Ranges base address specifiers can save a lot of object size in
relocation records especially in optimized builds.
For an optimized self-host build of Clang with split DWARF and debug
info compression in object files, but uncompressed debug info in the
executable, this change produces about 18% smaller object files and 6%
larger executable.
While it would've been nice to turn this on by default, gold's 32 bit
gdb-index support crashes on this input & I don't think there's any
perfect heuristic to implement solely in LLVM that would suffice - so
we'll need a flag one way or another (also possible people might want to
aggressively optimized for executable size that contains debug info
(even with compression this would still come at some cost to executable
size)) - so let's plumb it through.
Differential Revision: https://reviews.llvm.org/D54242
llvm-svn: 346788
Zachary Turner [Tue, 13 Nov 2018 20:07:57 +0000 (20:07 +0000)]
[NativePDB] Add support for S_CONSTANT records.
clang-cl does not emit these, but MSVC does, so we need to be able to
handle them.
Because clang-cl does not generate them, it was a bit hard to write a
test. So what I had to do was get an PDB file with some S_CONSTANT
records in using cl and link, dump it using llvm-pdbutil dump -globals
-sym-data to get the bytes of the records, generate the same object file
using clang-cl but with -S to emit an assembly file, and replace all the
S_LDATA32 records with the bytes of the S_CONSTANT records. This way, we
can compile the file using llvm-mc and link it with lld-link.
Differential Revision: https://reviews.llvm.org/D54452
llvm-svn: 346787
Zachary Turner [Tue, 13 Nov 2018 20:07:32 +0000 (20:07 +0000)]
[NativePDB] Improved support for nested type reconstruction.
In a previous patch, we pre-processed the TPI stream in order to build
the reverse mapping from nested type -> parent type so that we could
accurately reconstruct a DeclContext hierarchy.
However, there were some issues. An LF_NESTTYPE record is really just a
typedef, so although it happens to be used to indicate the name of the
nested type and referring to the global record which defines the type,
it is also used for every other kind of nested typedef. When we rebuild
the DeclContext hierarchy, we want it to be as accurate as possible,
which means that if we have something like:
struct A {
struct B {};
using C = B;
};
We don't want to create two CXXRecordDecls in the AST each with the
exact same definition. We just want to create one for B and then
define C as an alias to B. Previously, however, it would not be able
to distinguish between the two cases and it would treat A::B and
A::C as being two classes each with separate definitions. We address
the first half of improving the pre-processing logic so that only
actual definitions are treated this way.
Later, in a followup patch, we can handle the case of nested
typedefs since we're already going to be enumerating the field list
anyway and this patch introduces the general framework for
distinguishing between the two cases.
Differential Revision: https://reviews.llvm.org/D54357
llvm-svn: 346786
Matt Arsenault [Tue, 13 Nov 2018 19:50:38 +0000 (19:50 +0000)]
Add fneg instruction to syntax highlighting lists
llvm-svn: 346785
Craig Topper [Tue, 13 Nov 2018 19:45:21 +0000 (19:45 +0000)]
[SelectionDAG][X86] Relax restriction on the width of an input to *_EXTEND_VECTOR_INREG. Use them and regular *_EXTEND to replace the X86 specific VSEXT/VZEXT opcodes
Previously, the extend_vector_inreg opcode required their input register to be the same total width as their output. But this doesn't match up with how the X86 instructions are defined. For X86 the input just needs to be a legal type with at least enough elements to cover the output.
This patch weakens the check on these nodes and allows them to be used as long as they have more input elements than output elements. I haven't changed type legalization behavior so it will still create them with matching input and output sizes.
X86 will custom legalize these nodes by shrinking the input to be a 128 bit vector and once we've done that we treat them as legal operations. We still have one case during type legalization where we must custom handle v64i8 on avx512f targets without avx512bw where v64i8 isn't a legal type. In this case we will custom type legalize to a *extend_vector_inreg with a v16i8 input. After that the input is a legal type so type legalization should ignore the node and doesn't need to know about the relaxed restriction. We are no longer allowed to use the default expansion for these nodes during vector op legalization since the default expansion uses a shuffle which required the widths to match. Custom legalization for all types will prevent us from reaching the default expansion code.
I believe DAG combine works correctly with the released restriction because it doesn't check the number of input elements.
The rest of the patch is changing X86 to use either the vector_inreg nodes or the regular zero_extend/sign_extend nodes. I had to add additional isel patterns to handle any_extend during isel since simplifydemandedbits can create them at any time so we can't legalize to zero_extend before isel. We don't yet create any_extend_vector_inreg in simplifydemandedbits.
Differential Revision: https://reviews.llvm.org/D54346
llvm-svn: 346784
Davide Italiano [Tue, 13 Nov 2018 19:43:43 +0000 (19:43 +0000)]
[Cocoa] Implement formatter for the new NSDate representation.
<rdar://problem/
46002786>
llvm-svn: 346783
Jordan Rupprecht [Tue, 13 Nov 2018 19:32:27 +0000 (19:32 +0000)]
[llvm-objcopy] Rename --keep to --keep-section.
Summary:
llvm-objcopy/strip support `--keep` (for sections) and `--keep-symbols` (for symbols). For consistency and clarity, rename `--keep` to `--keep-section`.
In fact, for GNU compatability, -K is --keep-symbol, so it's weird that the alias `-K` is not the same as the short-ish `--keep`.
Reviewers: jakehehrlich, jhenderson, alexshap, MaskRay, espindola
Reviewed By: jakehehrlich, MaskRay
Subscribers: emaste, arichardson, llvm-commits
Differential Revision: https://reviews.llvm.org/D54477
llvm-svn: 346782
Bruno Ricci [Tue, 13 Nov 2018 19:27:39 +0000 (19:27 +0000)]
[AST][NFC] Style fixes for UnaryOperator
In preparation for the patch which will move some data to the bit-fields
of Stmt. In particular, rename the private variable "Val" -> "Operand"
since the substatement is the operand of the unary operator.
Run clang-format on UnaryOperator. NFC otherwise.
llvm-svn: 346781
Jonas Devlieghere [Tue, 13 Nov 2018 19:18:16 +0000 (19:18 +0000)]
Add GDB remote packet reproducer.
llvm-svn: 346780
Eric Fiselier [Tue, 13 Nov 2018 19:16:19 +0000 (19:16 +0000)]
Fix UB in string.bench.cpp.
The usage of aligned_storage failed to pass the alignment it wanted,
which caused it to have a larger size and alignment that the
std::string's it was intended to store.
This patch manually specifies the alignment, as well as cleaning up
type alias bugs.
llvm-svn: 346779
Sam Clegg [Tue, 13 Nov 2018 19:14:02 +0000 (19:14 +0000)]
[WebAssembly] Fix broken assumption that all bitcasts are to functions types
Specifically, we can bitcast to void.
Fixes PR39591
Differential Revision: https://reviews.llvm.org/D54447
llvm-svn: 346778
Reid Kleckner [Tue, 13 Nov 2018 18:30:31 +0000 (18:30 +0000)]
[COFF] Simplify relocation to discarded section diagnostic code, NFC
Move it out of the loop that applies relocations for readability.
llvm-svn: 346777
Jonas Devlieghere [Tue, 13 Nov 2018 18:23:32 +0000 (18:23 +0000)]
[FileSystem] Add expand_tilde function
In D54435 there was some discussion about the expand_tilde flag for
real_path that I wanted to expose through the VFS. The consensus is that
these two things should be separate functions. Since we already have the
code for this I went ahead and added a function expand_tilde that does
just that.
Differential revision: https://reviews.llvm.org/D54448
llvm-svn: 346776