platform/upstream/llvm.git
4 years agogn build: run "gn format"
Nico Weber [Mon, 4 Nov 2019 14:50:16 +0000 (09:50 -0500)]
gn build: run "gn format"

4 years agogn build: add deps, see discussion on D69130
Nico Weber [Mon, 4 Nov 2019 14:18:05 +0000 (09:18 -0500)]
gn build: add deps, see discussion on D69130

4 years agoRevert "[LV] Apply sink-after & interleave-groups as VPlan transformations (NFC)"
Benjamin Kramer [Mon, 4 Nov 2019 14:04:42 +0000 (15:04 +0100)]
Revert "[LV] Apply sink-after & interleave-groups as VPlan transformations (NFC)"

This reverts commit 2be17087f8c38934b7fc9208ae6cf4e9b4d44f4b. Fails ASAN.

4 years ago[ARM] More MVE shuffle tests for sequences that can be converted to VMOVS. NFC.
David Green [Mon, 4 Nov 2019 13:38:09 +0000 (13:38 +0000)]
[ARM] More MVE shuffle tests for sequences that can be converted to VMOVS. NFC.

4 years ago[ARM] Add vrev32 NEON fp16 patterns
David Green [Mon, 4 Nov 2019 13:33:22 +0000 (13:33 +0000)]
[ARM] Add vrev32 NEON fp16 patterns

Fill in the gaps for vrev32.16 f16 patterns, extending the existing i16
patterns.

Differential Revision: https://reviews.llvm.org/D69508

4 years ago[InstSimplify] use FMF to improve fcmp+select fold
Sanjay Patel [Mon, 4 Nov 2019 13:29:56 +0000 (08:29 -0500)]
[InstSimplify] use FMF to improve fcmp+select fold

This is part of a series of patches needed to solve PR39535:
https://bugs.llvm.org/show_bug.cgi?id=39535

4 years ago[InstSimplify] add more tests for fcmp+select; NFC
Sanjay Patel [Mon, 4 Nov 2019 13:23:08 +0000 (08:23 -0500)]
[InstSimplify] add more tests for fcmp+select; NFC

The easy code fix won't catch non-canonical mismatched
constant patterns, so adding extra coverage for those in
case we decide that's important (but seems unlikely).

4 years ago[OpenCL] Fix address space for const method call from nonconst (PR43145)
Sven van Haastregt [Mon, 4 Nov 2019 13:12:17 +0000 (13:12 +0000)]
[OpenCL] Fix address space for const method call from nonconst (PR43145)

Patch by Anastasia Stulova and Sven van Haastregt.

Differential Revision: https://reviews.llvm.org/D68781

4 years ago[SystemZ] Add GHC calling convention
Ulrich Weigand [Mon, 4 Nov 2019 12:26:38 +0000 (13:26 +0100)]
[SystemZ] Add GHC calling convention

This is a special calling convention to be used by the GHC compiler.

Author: Stefan Schulze Frielinghaus
Differential Revision: https://reviews.llvm.org/D69024

4 years ago[InstSimplify] add more tests for fcmp+select; NFC
Sanjay Patel [Mon, 4 Nov 2019 12:36:03 +0000 (07:36 -0500)]
[InstSimplify] add more tests for fcmp+select; NFC

The addition of FMF for select allows more folding for these
kinds of patterns.

4 years ago[llvm-readobj] Change errors to warnings for symbol section name dumping
James Henderson [Mon, 4 Nov 2019 12:00:39 +0000 (12:00 +0000)]
[llvm-readobj] Change errors to warnings for symbol section name dumping

Also only print each such warning once.

LLVM-style output will now print "<?>" for sections it cannot identify,
e.g. because the section index is invalid. GNU output continues to print
the raw index. In both cases where the st_shndx value is SHN_XINDEX and
the index cannot be looked up in the SHT_SYMTAB_SHNDX section (e.g.
because it is missing), the symbol is printed like other symbols with
st_shndx >= SHN_LORESERVE.

Reviewed by: grimar, MaskRay

Differential Revision: https://reviews.llvm.org/D69671

4 years ago[X86] SimplifyDemandedVectorElts - attempt to recombine target shuffle using Demanded...
Simon Pilgrim [Mon, 4 Nov 2019 11:37:42 +0000 (11:37 +0000)]
[X86] SimplifyDemandedVectorElts - attempt to recombine target shuffle using DemandedElts mask (REAPPLIED)

If we don't demand all elements, then attempt to combine to a simpler shuffle.

At the moment we can only do this if Depth == 0 as combineX86ShufflesRecursively uses Depth to track whether the shuffle has really changed or not - we'll need to change this before we can properly start merging combineX86ShufflesRecursively into SimplifyDemandedVectorElts (see D66004).

This reapplies rL368307 (reverted at rL369167) after the fix for the infinite loop reported at PR43024 was applied at rG3f087e38a2e7b87a5adaaac1c1b61e51220e7ff3

4 years ago[FIX] Removed duplicated v4f16 and v8f16 declarations
Diogo Sampaio [Mon, 4 Nov 2019 10:41:32 +0000 (10:41 +0000)]
[FIX] Removed duplicated v4f16 and v8f16 declarations

Reviewers: RKSimon, ostannard

Reviewed By: RKSimon

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69795

4 years ago[RISCV] Implement the TargetLowering::getRegisterByName hook
Luís Marques [Mon, 4 Nov 2019 11:21:51 +0000 (11:21 +0000)]
[RISCV] Implement the TargetLowering::getRegisterByName hook

Summary: The hook should work for any RISC-V register. Non-allocatable registers
do not need to be reserved, for the remaining the hook will only succeed
if you pass clang the -ffixed-xX flag. This builds upon D67185, which
currently only allows reserving GPRs.

Reviewers: asb, lenary

Reviewed By: lenary

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69130

4 years ago[hwasan] Remove lazy thread-initialisation
David Spickett [Mon, 4 Nov 2019 10:58:46 +0000 (10:58 +0000)]
[hwasan] Remove lazy thread-initialisation

This was an experiment made possible by a non-standard feature of the
Android dynamic loader.

It required introducing a flag to tell the compiler which ABI was being
targeted.
This flag is no longer needed, since the generated code now works for
both ABI's.

We leave that flag untouched for backwards compatibility. This also
means that if we need to distinguish between targeted ABI's again
we can do that without disturbing any existing workflows.

We leave a comment in the source code and mention in the help text to
explain this for any confused person reading the code in the future.

Patch by Matthew Malcomson

Differential Revision: https://reviews.llvm.org/D69574

4 years ago[lldb][NFC] Remove Ocaml from TypeSystem::LLVMCastKind
Raphael Isemann [Mon, 4 Nov 2019 10:14:26 +0000 (11:14 +0100)]
[lldb][NFC] Remove Ocaml from TypeSystem::LLVMCastKind

Ocaml support was removed.

4 years ago[lldb][NFC] Remove unused ExpressionParser::Parse
Raphael Isemann [Mon, 4 Nov 2019 10:12:27 +0000 (11:12 +0100)]
[lldb][NFC] Remove unused ExpressionParser::Parse

Summary:
This function is only used internally by ClangExpressionParser. By putting it in the ExpressionParser class all languages
that implement ExpressionParser::Parse have to share the same signature (which forces us in downstream to add
swift-specific arguments to ExpressionParser::Parse which then propagate to ClangExpressionParser and so on).

Reviewers: davide

Subscribers: JDevlieghere, lldb-commits

Tags: #upstreaming_lldb_s_downstream_patches, #lldb

Differential Revision: https://reviews.llvm.org/D69710

4 years ago[SystemZ] Improve handling of huge PC relative immediate offsets.
Jonas Paulsson [Sat, 2 Nov 2019 08:38:25 +0000 (09:38 +0100)]
[SystemZ]  Improve handling of huge PC relative immediate offsets.

Demand that an immediate offset to a PC relative address fits in 32 bits, or
else load it into a register and perform a separate add.

Verify in the assembler that such immediate offsets fit the bitwidth.

Even though the final address of a Load Address Relative Long may fit in 32
bits even with a >32 bit offset (depending on where the symbol lives relative
to PC), the GNU toolchain demands the offset by itself to be in range. This
patch adapts the same behavior for llvm.

Review: Ulrich Weigand
https://reviews.llvm.org/D69749

4 years ago[LV] Apply sink-after & interleave-groups as VPlan transformations (NFC)
Gil Rapaport [Mon, 7 Oct 2019 14:24:33 +0000 (17:24 +0300)]
[LV] Apply sink-after & interleave-groups as VPlan transformations (NFC)

The sink-after and interleave-group vectorization decisions were so far applied to
VPlan during initial VPlan construction, which complicates VPlan construction – also because of
their inter-dependence. This patch refactors buildVPlanWithRecipes() to construct a simpler
initial VPlan and later apply both these vectorization decisions, in order, as VPlan-to-VPlan
transformations.

Differential Revision: https://reviews.llvm.org/D68577

4 years ago[lldb][NFC] Make test/python_api/module_section test smaller
Raphael Isemann [Mon, 4 Nov 2019 08:25:01 +0000 (09:25 +0100)]
[lldb][NFC] Make test/python_api/module_section test smaller

Summary:
I don't see why this test needs to compile this rather complicated file for just testing module sections. This just removes all this code with a simple
"Hello world!" program which should be faster to compile

Reviewers: labath, davide, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: jfb, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D69705

4 years ago[lldb] Also disable de-registration of EHFrames in IRExecutionUnit
Raphael Isemann [Mon, 4 Nov 2019 08:23:37 +0000 (09:23 +0100)]
[lldb] Also disable de-registration of EHFrames in IRExecutionUnit

Summary:
We disabled registration by providing an empty `registerEHFrames`, so we should also provide an empty `deregisterEHFrames`
in case that function relies on `registerEHFrames` being called before. Currently `deregisterEHFrames` is a no-op anyway
as it just iterates over the (empty( list of registered EHFrames and then clear the empty list.

Reviewers: davide, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: JDevlieghere, lldb-commits

Tags: #upstreaming_lldb_s_downstream_patches, #lldb

Differential Revision: https://reviews.llvm.org/D69713

4 years ago[lldb] Provide a getter for m_materializer_up in LLVMUserExpression instead of relyin...
Raphael Isemann [Mon, 4 Nov 2019 08:05:24 +0000 (09:05 +0100)]
[lldb] Provide a getter for m_materializer_up in LLVMUserExpression instead of relying on it being accessible.

Summary:
Motivated by Swift using the materializer in a few places which requires us to add this getter ourselves.
We also need a setter, but let's keep this minimal to unblock the downstream reverts in Swift.

Reviewers: davide

Reviewed By: davide

Subscribers: abidh, JDevlieghere, lldb-commits

Tags: #upstreaming_lldb_s_downstream_patches, #lldb

Differential Revision: https://reviews.llvm.org/D69714

4 years ago[lldb] Add trailing dots to comments in Value.cpp
Raphael Isemann [Mon, 4 Nov 2019 07:35:56 +0000 (08:35 +0100)]
[lldb] Add trailing dots to comments in Value.cpp

Reviewers: JDevlieghere

Reviewed By: JDevlieghere

Subscribers: JDevlieghere, lldb-commits

Tags: #upstreaming_lldb_s_downstream_patches, #lldb

Differential Revision: https://reviews.llvm.org/D69717

4 years ago Set the floating point status register as reserved
Pengfei Wang [Mon, 4 Nov 2019 07:13:51 +0000 (23:13 -0800)]
 Set the floating point status register as reserved

Summary:
This patch sets the FPSW (X87 floating-point status register) as a reserved
physical register and fix the test failure caused by [[ https://reviews.llvm.org/D68854| D68854 ]].

Before this patch, some tests will fail because it implicit uses FPSW without
define it. Setting the FPSW as a reserved physical register will skip liveness
analysis because it is always live.

Reviewers: pengfei, craig.topper

Reviewed By: craig.topper

Subscribers: craig.topper, hiraditya, llvm-commits

Patch by LiuChen.

Differential Revision: https://reviews.llvm.org/D69784

4 years agoclang/Modules: Sink CompilerInstance::KnownModules into ModuleMap
Duncan P. N. Exon Smith [Mon, 4 Nov 2019 03:29:29 +0000 (19:29 -0800)]
clang/Modules: Sink CompilerInstance::KnownModules into ModuleMap

Avoid use-after-frees when FrontendAction::BeginSourceFile is called
twice on the same CompilerInstance by sinking
CompilerInstance::KnownModules into ModuleMap.  On the way, rename the
map to CachedModuleLoads.  I considered (but rejected) merging this with
ModuleMap::Modules, since that only has top-level modules and this map
includes submodules.

This is an alternative to https://reviews.llvm.org/D58497.  Thanks to
nemanjai for the detailed analysis of the problem!

4 years ago[compiler-rt] [msan] Correct the __libc_thr_keycreate prototype
Kamil Rytarowski [Mon, 4 Nov 2019 00:10:59 +0000 (01:10 +0100)]
[compiler-rt] [msan] Correct the __libc_thr_keycreate prototype

Fixes build with GCC8.

4 years ago[compiler-rt] [msan] Support POSIX iconv(3) on NetBSD 9.99.17+
Kamil Rytarowski [Mon, 4 Nov 2019 00:08:53 +0000 (01:08 +0100)]
[compiler-rt] [msan] Support POSIX iconv(3) on NetBSD 9.99.17+

Fixes build of test.

4 years ago[mips] Move test case for Octeon instructions to cnmips sub-folder. NFC
Simon Atanasyan [Sun, 3 Nov 2019 18:46:57 +0000 (21:46 +0300)]
[mips] Move test case for Octeon instructions to cnmips sub-folder. NFC

4 years ago[mips] Add disassembler tests for `octeon` CPU. NFC
Simon Atanasyan [Sun, 3 Nov 2019 16:12:19 +0000 (19:12 +0300)]
[mips] Add disassembler tests for `octeon` CPU. NFC

4 years ago[mips] Add disassembler tests for `sigrie` instruction. NFC
Simon Atanasyan [Sun, 3 Nov 2019 15:22:32 +0000 (18:22 +0300)]
[mips] Add disassembler tests for `sigrie` instruction. NFC

4 years ago[X86][SSE] combineX86ShufflesRecursively - at Depth==0, only resolve KnownZero if...
Simon Pilgrim [Sun, 3 Nov 2019 21:10:22 +0000 (21:10 +0000)]
[X86][SSE] combineX86ShufflesRecursively - at Depth==0, only resolve KnownZero if it removes an input.

This stops infinite loops where KnownUndef elements are converted to Zeroable, resulting in KnownZero elements which are then simplified (via SimplifyDemandedElts etc.) back to KnownUndef elements........

Prep fix for PR43024 which will allow rL368307 to be re-applied.

4 years ago[SIMachineScheduler] Fixed ''then' statement is equivalent to the 'else' statement...
Dávid Bolvanský [Sun, 3 Nov 2019 19:40:53 +0000 (20:40 +0100)]
[SIMachineScheduler] Fixed ''then' statement is equivalent to the 'else' statement.' warning. NFCI.

4 years ago[SILoadStoreOptimizer] Fixed typo. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:38:29 +0000 (20:38 +0100)]
[SILoadStoreOptimizer] Fixed typo. NFCI.

4 years agoReland '[InstructionCombining] Fixed null check after dereferencing warning. NFCI.'
Dávid Bolvanský [Sun, 3 Nov 2019 19:34:54 +0000 (20:34 +0100)]
Reland '[InstructionCombining] Fixed null check after dereferencing warning. NFCI.'

4 years agoRevert "[InstructionCombining] Fixed null check after dereferencing warning. NFCI."
Dávid Bolvanský [Sun, 3 Nov 2019 19:31:05 +0000 (20:31 +0100)]
Revert "[InstructionCombining] Fixed null check after dereferencing warning. NFCI."

This reverts commit 8308187fd9bfa08ffad0a636d4dd1d25e7de5a76. This exposed a bug.

4 years ago[SCEV] Fixed 'Uninitialized variable 'ContainsAddRec' used.' warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:28:45 +0000 (20:28 +0100)]
[SCEV] Fixed 'Uninitialized variable 'ContainsAddRec' used.' warning. NFCI.

4 years ago[MemorySSA] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:27:40 +0000 (20:27 +0100)]
[MemorySSA] Fixed null check after dereferencing warning. NFCI.

4 years agoRevert "[InstructionCompares] Fixed null check after dereferencing warning. NFCI."
Dávid Bolvanský [Sun, 3 Nov 2019 19:24:01 +0000 (20:24 +0100)]
Revert "[InstructionCompares] Fixed null check after dereferencing warning. NFCI."

This reverts commit b8685cf3042f6a2e129061922bd6b18e3c42258e.

4 years ago[InstructionCompares] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:13:45 +0000 (20:13 +0100)]
[InstructionCompares] Fixed null check after dereferencing warning. NFCI.

4 years ago[InstructionCombining] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:10:46 +0000 (20:10 +0100)]
[InstructionCombining] Fixed null check after dereferencing warning. NFCI.

4 years ago[CHR] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:06:38 +0000 (20:06 +0100)]
[CHR] Fixed null check after dereferencing warning. NFCI.

4 years ago[LoopUnrollRuntime] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:03:54 +0000 (20:03 +0100)]
[LoopUnrollRuntime] Fixed null check after dereferencing warning. NFCI.

4 years ago[LoopUnrollAndJam] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 19:02:54 +0000 (20:02 +0100)]
[LoopUnrollAndJam] Fixed null check after dereferencing warning. NFCI.

4 years ago[BitcodeReader] Fixed use after move warnings. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 18:45:25 +0000 (19:45 +0100)]
[BitcodeReader] Fixed use after move warnings. NFCI.

4 years ago[BitcodeReader] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 18:42:11 +0000 (19:42 +0100)]
[BitcodeReader] Fixed null check after dereferencing warning. NFCI.

4 years ago[BitcodeReader] Fixed null pointer dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 18:40:26 +0000 (19:40 +0100)]
[BitcodeReader] Fixed null pointer dereferencing warning. NFCI.

4 years ago[SelectionDAG] Fixed null check after dereferencing warning. NFCI.
Dávid Bolvanský [Sun, 3 Nov 2019 18:34:03 +0000 (19:34 +0100)]
[SelectionDAG] Fixed null check after dereferencing warning. NFCI.

4 years ago[opaque pointer types] Add element type argument to IRBuilder CreatePreserveStructAcc...
Craig Topper [Sun, 3 Nov 2019 17:30:08 +0000 (09:30 -0800)]
[opaque pointer types] Add element type argument to IRBuilder CreatePreserveStructAccessIndex and CreatePreserveArrayAccessIndex

Summary:
These were the only remaining users of the GetElementPtrInst::getGEPReturnType
method that gets the element type from the pointer type.

Remove that method since its now dead.

Reviewers: jyknight, t.p.northover, arsenm

Reviewed By: arsenm

Subscribers: wdng, arsenm, arphaman, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D69756

4 years agogn build: (manually) merge 3a399c09 / add76dd3c
Nico Weber [Sun, 3 Nov 2019 17:52:12 +0000 (12:52 -0500)]
gn build: (manually) merge 3a399c09 / add76dd3c

4 years ago[X86][SSE] combineX86ShufflesRecursively - don't bother merging shuffles with empty...
Simon Pilgrim [Sun, 3 Nov 2019 17:45:32 +0000 (17:45 +0000)]
[X86][SSE] combineX86ShufflesRecursively - don't bother merging shuffles with empty roots. NFCI.

This doesn't affect actual codegen, but is a minor refactor toward fixing PR43024 where we need to avoid excess changes (folding zeroables etc.) to the shuffle mask at Depth == 0.

4 years ago[X86] Convert PICStyles::Style to scoped enum class. NFCI.
Simon Pilgrim [Sun, 3 Nov 2019 17:27:51 +0000 (17:27 +0000)]
[X86] Convert PICStyles::Style to scoped enum class. NFCI.

Fixes MSVC static analyzer warnings about enum safety, this enum performs no integer math so it'd be better to fix its scope.

4 years ago[DebugInfo] Fix for DW_OP_LLVM_fragment in DIExpression::isImplicit()
Bjorn Pettersson [Sun, 3 Nov 2019 16:37:34 +0000 (17:37 +0100)]
[DebugInfo] Fix for DW_OP_LLVM_fragment in DIExpression::isImplicit()

DIExpression::isImplicit() did not handle DW_OP_LLVM_fragment
correctly. It was scanning the elements in the expression by
iterating from the end. But we do not know the position of
ops unless we iterate from the beginning of the expression,
since DW_OP:s and their operands are stored flat in the expression
list. The old code also assumed that a DW_OP_LLVM_fragment
only occupied one element in the expression list, but it actually
occupies three elements.

4 years ago[BPF] fix a bug in __builtin_preserve_field_info() with FIELD_BYTE_SIZE
Yonghong Song [Sun, 3 Nov 2019 14:54:39 +0000 (06:54 -0800)]
[BPF] fix a bug in __builtin_preserve_field_info() with FIELD_BYTE_SIZE

During deriving proper bitfield access FIELD_BYTE_SIZE,
function Member->getStorageOffsetInBits() is used to
get llvm IR type storage offset in bits so that
the byte size can permit aligned loads/stores with previously
derived FIELD_BYTE_OFFSET.

The function should only be used with bitfield members and it will
assert if ASSERT is turned on during cmake build.
  Constant *getStorageOffsetInBits() const {
    assert(getTag() == dwarf::DW_TAG_member && isBitField());
    if (auto *C = cast_or_null<ConstantAsMetadata>(getExtraData()))
      return C->getValue();
    return nullptr;
  }

This patch fixed the issue by using Member->isBitField()
directly and a test case is added to cover this missing case.
This issue is discovered when running Andrii's linux kernel CO-RE
tests.

Differential Revision: https://reviews.llvm.org/D69761

4 years ago[compiler-rt] Harmonize __sanitizer_addrinfo with the NetBSD headers
Kamil Rytarowski [Sun, 3 Nov 2019 15:47:03 +0000 (16:47 +0100)]
[compiler-rt] Harmonize __sanitizer_addrinfo with the NetBSD headers

Add missing pad for sparc, alpha and a variation of i386.

4 years ago[compiler-rt] Sync NetBSD syscall hooks with 9.99.17
Kamil Rytarowski [Sun, 3 Nov 2019 15:17:26 +0000 (16:17 +0100)]
[compiler-rt] Sync NetBSD syscall hooks with 9.99.17

Document the minimal version supported as 9.0 and add compat code for
renamed syscalls after 9.0.

4 years agoDrop spurious self-include [NFC]
Aaron Puchert [Sun, 3 Nov 2019 13:29:59 +0000 (14:29 +0100)]
Drop spurious self-include [NFC]

This was introduced in D61357, probably by accident.

4 years agoModuleMap::findHeader - fix null dereference warning. NFCI.
Simon Pilgrim [Sun, 3 Nov 2019 11:33:57 +0000 (11:33 +0000)]
ModuleMap::findHeader - fix null dereference warning. NFCI.

We were checking M for a null value after we'd already dereferenced it multiple times.

4 years agoSymbolRecord - fix more uninitialized variable warnings. NFCI.
Simon Pilgrim [Sun, 3 Nov 2019 11:27:57 +0000 (11:27 +0000)]
SymbolRecord - fix more uninitialized variable warnings. NFCI.

4 years agoFix uninitialized variable warnings. NFCI.
Simon Pilgrim [Sun, 3 Nov 2019 11:23:53 +0000 (11:23 +0000)]
Fix uninitialized variable warnings. NFCI.

4 years agoFix line_iterator uninitialized variable warnings. NFCI.
Simon Pilgrim [Sun, 3 Nov 2019 11:20:12 +0000 (11:20 +0000)]
Fix line_iterator uninitialized variable warnings. NFCI.

Allows us to auto define the default constructor as well.

4 years agoEnsure VPlanPrinter::Depth is initialized to fix static analyzer warning. NFCI.
Simon Pilgrim [Sun, 3 Nov 2019 11:17:05 +0000 (11:17 +0000)]
Ensure VPlanPrinter::Depth is initialized to fix static analyzer warning. NFCI.

4 years agoFix uninitialized variable warning. NFCI.
Simon Pilgrim [Sun, 3 Nov 2019 11:15:55 +0000 (11:15 +0000)]
Fix uninitialized variable warning. NFCI.

4 years ago[CodeGen] [ExpandReduction] Fix the bug for ExpandReduction() when vector size isn...
shkzhang [Sun, 3 Nov 2019 03:59:12 +0000 (23:59 -0400)]
[CodeGen] [ExpandReduction] Fix the bug for ExpandReduction() when vector size isn't power of 2

Summary:
For below test case, we will get assert error except for AArch64 and ARM:

declare i8 @llvm.experimental.vector.reduce.and.i8.v3i8(<3 x i8> %a)
define i8 @test_v3i8(<3 x i8> %a) nounwind {
  %b = call i8 @llvm.experimental.vector.reduce.and.i8.v3i8(<3 x i8> %a)
  ret i8 %b
}
In the function getShuffleReduction (), we can see it needs the vector size must be power of 2.

This patch is fix below error when the number of element is not power of 2 for those llvm.experimental.vector.reduce.* function.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D68625

4 years ago[CodeGenCXX][test] Use -fno-experimental-new-pass-manager for CodeGenCXX/union-tbaa2...
Fangrui Song [Sat, 2 Nov 2019 22:57:10 +0000 (15:57 -0700)]
[CodeGenCXX][test] Use -fno-experimental-new-pass-manager for CodeGenCXX/union-tbaa2.cpp after D68593/llvmorg-10-init-8907-gcecc0d27ad5

It fails with -DENABLE_EXPERIMENTAL_NEW_PASS_MANAGER=0 builds. Temporarily use -fno-experimental-new-pass-manager while we are investigating the root cause.

4 years agoStop static analyzer warnings about using bitwise operators on booleans. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 22:38:07 +0000 (22:38 +0000)]
Stop static analyzer warnings about using bitwise operators on booleans. NFCI.

Call each of the rebase_if() calls separately.

4 years agoTargetParserTest - testARMArch - stop bitwise operators on boolean warnings. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 22:26:00 +0000 (22:26 +0000)]
TargetParserTest - testARMArch - stop bitwise operators on boolean warnings. NFCI.

Ensure the test still runs all target checks but stop the static analyzer warnings.

4 years agoCodeGen/DIE.h: prefer the default member initializer to the member initializers in...
Fangrui Song [Sat, 2 Nov 2019 21:54:59 +0000 (14:54 -0700)]
CodeGen/DIE.h: prefer the default member initializer to the member initializers in the constructor. NFC

4 years ago[mips] Remove trailing spaces. NFC
Simon Atanasyan [Sat, 2 Nov 2019 13:35:52 +0000 (16:35 +0300)]
[mips] Remove trailing spaces. NFC

4 years ago[mips] Split long lines in the code. NFC
Simon Atanasyan [Sat, 2 Nov 2019 13:33:10 +0000 (16:33 +0300)]
[mips] Split long lines in the code. NFC

4 years agoA15SDOptimizer::getPrefSPRLane - fix null dereference warning. NFCI
Simon Pilgrim [Sat, 2 Nov 2019 21:49:12 +0000 (21:49 +0000)]
A15SDOptimizer::getPrefSPRLane - fix null dereference warning. NFCI

4 years agoisConditionalBranch/isUnconditionalBranch - use boolean operators. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 21:28:37 +0000 (21:28 +0000)]
isConditionalBranch/isUnconditionalBranch - use boolean operators. NFCI.

Stop static analyzer warnings about using bitwise operators on booleans.

4 years ago[LV] Generalize conditions for sinking instrs for first order recurrences.
Florian Hahn [Sat, 2 Nov 2019 17:45:33 +0000 (18:45 +0100)]
[LV] Generalize conditions for sinking instrs for first order recurrences.

If the recurrence PHI node has a single user, we can sink any
instruction without side effects, given that all users are dominated by
the instruction computing the incoming value of the next iteration
('Previous'). We can sink instructions that may cause traps, because
that only causes the trap to occur later, but not on any new paths.

With the relaxed check, we also have to make sure that we do not have a
direct cycle (meaning PHI user == 'Previous), which indicates a
reduction relation, which potentially gets missed by
ReductionDescriptor.

As follow-ups, we can also sink stores, iff they do not alias with
other instructions we move them across and we could also support sinking
chains of instructions and multiple users of the PHI.

Fixes PR43398.

Reviewers: hsaito, dcaballe, Ayal, rengolin

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D69228

4 years agoisImmPCRel/isImmSigned - both functions should return bool not unsigned. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 21:03:36 +0000 (21:03 +0000)]
isImmPCRel/isImmSigned - both functions should return bool not unsigned. NFCI.

4 years agoMatchTableRecord::emit - fix boolean operator precedence warnings from PVS Studio...
Simon Pilgrim [Sat, 2 Nov 2019 21:01:45 +0000 (21:01 +0000)]
MatchTableRecord::emit - fix boolean operator precedence warnings from PVS Studio. NFCI.

Make it clear that (Flags & MTRF_????) should resolve to a boolean.

4 years ago[Attributor][NFCI] Do not track unnecessary dependences
Johannes Doerfert [Sat, 2 Nov 2019 19:47:45 +0000 (14:47 -0500)]
[Attributor][NFCI] Do not track unnecessary dependences

If we do not look at assumed information there is no need to track
dependences.

4 years ago[Attributor][NFCI] Distinguish optional and required dependences
Johannes Doerfert [Sat, 2 Nov 2019 07:48:05 +0000 (02:48 -0500)]
[Attributor][NFCI] Distinguish optional and required dependences

Dependences between two abstract attributes SRC and TRG come naturally in
two flavors:
  Either (1) "some" information of SRC is *required* for TRG to derive
  information, or (2) SRC is just an *optional* way for TRG to derive
  information.

While it is not strictly necessary to distinguish these types
explicitly, it can help us to converge faster, in terms of iterations,
and also cut down the number of `AbstractAttribute::update` calls.

As far as I can tell, we only use optional dependences for liveness so
far but that might change in the future. With this change the Attributor
can be informed about the "dependence class" and it will perform
appropriate actions when an Attribute is set to an invalid state, thus
one that cannot be used by others to derive information from.

4 years agoFix -Wreorder warnings. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 20:12:35 +0000 (20:12 +0000)]
Fix -Wreorder warnings. NFCI.

4 years agoARMAttributeParser - fix shadow variable name warnings from decodeULEB128 calls....
Simon Pilgrim [Sat, 2 Nov 2019 20:11:29 +0000 (20:11 +0000)]
ARMAttributeParser - fix shadow variable name warnings from decodeULEB128 calls. NFCI.

Consistently rename the Length attribute to DecodeLength in decodeULEB128 calls.

4 years agoGSYMTest::TestLineTable - check all LT1+LT2 comparisons.
Simon Pilgrim [Sat, 2 Nov 2019 19:24:03 +0000 (19:24 +0000)]
GSYMTest::TestLineTable - check all LT1+LT2 comparisons.

PVS Studio was warning about "LT2 < LT2" but really we should be testing all permutations of LT1 and LT2.

4 years ago[LegacyPassManager] Fixed "null check after derefencing" warning
Dávid Bolvanský [Sat, 2 Nov 2019 19:14:29 +0000 (20:14 +0100)]
[LegacyPassManager] Fixed "null check after derefencing" warning

The 'RequiredPass' pointer was utilized before it was verified against nullptr. Check lines: 1626, 1629.

4 years agobuild: avoid custom handling for C++ standard
Saleem Abdulrasol [Sat, 2 Nov 2019 19:06:17 +0000 (15:06 -0400)]
build: avoid custom handling for C++ standard

Use the builtin CMake support for specifying the proper flags for the targets to
build at a certain C++ standard.  This avoids unnecessary checks in CMake,
speeding up the configure phase as well as simplifies the logic overall.

4 years agoX86_MC::createX86MCSubtargetInfo - X86_MC::ParseX86Triple never returns an empty...
Simon Pilgrim [Sat, 2 Nov 2019 18:45:31 +0000 (18:45 +0000)]
X86_MC::createX86MCSubtargetInfo - X86_MC::ParseX86Triple never returns an empty string. NFCI.

PVS Studio was complaining that the expression '!ArchFS.empty()' is always true.

4 years agoX86Operand::print - fix SymName shadow variable warning. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 18:37:58 +0000 (18:37 +0000)]
X86Operand::print - fix SymName shadow variable warning. NFCI.

4 years agoNoFree argument attribute.
Stefan Stipanovic [Sat, 2 Nov 2019 15:35:38 +0000 (16:35 +0100)]
NoFree argument attribute.

Summary: Deducing nofree atrribute for function arguments.

Reviewers: jdoerfert

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67886

4 years agoFastISel - fix uninitialized variable warnings in constructor. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 17:40:52 +0000 (17:40 +0000)]
FastISel - fix uninitialized variable warnings in constructor. NFCI.

4 years agollvm.coverage.FunctionRecord - fix uninitialized variable warning. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 17:38:04 +0000 (17:38 +0000)]
llvm.coverage.FunctionRecord - fix uninitialized variable warning. NFCI.

4 years agoX86AsmPrinter - fix uninitialized variable warnings. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 17:36:14 +0000 (17:36 +0000)]
X86AsmPrinter - fix uninitialized variable warnings. NFCI.

4 years agoDIEAbbrev - fix uninitialized variable warning. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 17:28:08 +0000 (17:28 +0000)]
DIEAbbrev - fix uninitialized variable warning. NFCI.

4 years agoFix uninitialized variable warnings. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 17:27:18 +0000 (17:27 +0000)]
Fix uninitialized variable warnings. NFCI.

4 years agoFix uninitialized variable warning. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 16:45:06 +0000 (16:45 +0000)]
Fix uninitialized variable warning. NFCI.

4 years agoRevert "[Codegen] Both sides of '&&' are same; fixed"
Dávid Bolvanský [Sat, 2 Nov 2019 18:02:33 +0000 (19:02 +0100)]
Revert "[Codegen] Both sides of '&&' are same; fixed"

This reverts commit edb42dccfafb2c0d25d19175c49d016a7c2e0b13. Buildbot timeouts.

4 years agomake -ftime-trace also trace time spent creating debug info
Luboš Luňák [Sat, 2 Nov 2019 15:39:59 +0000 (16:39 +0100)]
make -ftime-trace also trace time spent creating debug info

Differential Revision: https://reviews.llvm.org/D69750

4 years agoRevert "NoFree argument attribute."
Stefan Stipanovic [Sat, 2 Nov 2019 16:31:02 +0000 (17:31 +0100)]
Revert "NoFree argument attribute."

This reverts commit c12efa2ed0547f7f9f8fba0ad7a76a4cb08bf53a.

4 years agoTargetMachine - fix uninitialized variable warning. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 16:11:01 +0000 (16:11 +0000)]
TargetMachine - fix uninitialized variable warning. NFCI.

TargetPassConfig::addCoreISelPasses() always initializes O0WantsFastISel but it appeases static analyzers that complain that O0WantsFastISel isn't initialized in the constructor.

4 years agoCustomTypeNode/SpecialTableSymbolNode - fix uninitialized variable warnings. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 16:00:21 +0000 (16:00 +0000)]
CustomTypeNode/SpecialTableSymbolNode - fix uninitialized variable warnings. NFCI.

4 years ago[Codegen] Both sides of '&&' are same; fixed
Dávid Bolvanský [Fri, 1 Nov 2019 23:38:09 +0000 (00:38 +0100)]
[Codegen] Both sides of '&&' are same; fixed

Summary:
Found by PVS Studio

Not familiar with this code; no testcase.

Reviewers: craig.topper, RKSimon

Reviewed By: RKSimon

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69741

4 years agoNoFree argument attribute.
Stefan Stipanovic [Sat, 2 Nov 2019 15:35:38 +0000 (16:35 +0100)]
NoFree argument attribute.

Summary: Deducing nofree atrribute for function arguments.

Reviewers: jdoerfert

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67886

4 years agoFix uninitialized variable warning. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 14:42:38 +0000 (14:42 +0000)]
Fix uninitialized variable warning. NFCI.

4 years ago[X86] Move computeZeroableShuffleElements before getTargetShuffleAndZeroables. NFCI.
Simon Pilgrim [Sat, 2 Nov 2019 13:38:35 +0000 (13:38 +0000)]
[X86] Move computeZeroableShuffleElements before getTargetShuffleAndZeroables. NFCI.

Prep work toward merging some of the functionality.

4 years agoRevert BCmp Loop Idiom recognition transform (PR43870)
Roman Lebedev [Sat, 2 Nov 2019 09:39:02 +0000 (12:39 +0300)]
Revert BCmp Loop Idiom recognition transform (PR43870)

As discussed in https://bugs.llvm.org/show_bug.cgi?id=43870,
this transform is missing a crucial legality check:
the old (non-countable) loop would early-return upon first mismatch,
but there is no such guarantee for bcmp/memcmp.

We'd need to ensure that [PtrA, PtrA+NBytes) and [PtrB, PtrB+NBytes)
are fully dereferenceable memory regions. But that would limit
the transform to constant loop trip counts and would further
cripple it because dereferenceability analysis is *very* partial.

Furthermore, even if all that is done, every single test
would need to be rewritten from scratch.

So let's just give up.