platform/upstream/llvm.git
5 years ago[libc++] reverts commit a5f5aad568bb7a91ceee47641f3076ac339ef8c7.
Zoe Carver [Mon, 19 Aug 2019 15:47:16 +0000 (15:47 +0000)]
[libc++] reverts commit a5f5aad568bb7a91ceee47641f3076ac339ef8c7.

The commit being reverted caused segfaults when building
with libc++ and GCC (and possibly other configurations).

Differential Revision: https://reviews.llvm.org/D62868

llvm-svn: 369270

5 years agoFilesystem/Windows: fix inconsistency in readNativeFileSlice API
Pavel Labath [Mon, 19 Aug 2019 15:40:49 +0000 (15:40 +0000)]
Filesystem/Windows: fix inconsistency in readNativeFileSlice API

Summary:
The windows version implementation of readNativeFileSlice, was trying to
match the POSIX behavior of not treating EOF as an error, but it was
only handling the case of reading from a pipe. Attempting to read past
the end of a regular file returns a slightly different error code, which
needs to be handled too. This patch adds ERROR_HANDLE_EOF to the list of
error codes to be treated as an end of file, and adds some unit tests
for the API.

This issue was found while attempting to land D66224, which caused a bunch of
lldb tests to start failing on windows.

Reviewers: rnk, aganea

Subscribers: kristina, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66344

llvm-svn: 369269

5 years ago[TargetLowering] x s% C == 0 fold: vector divisor with INT_MIN handling
Roman Lebedev [Mon, 19 Aug 2019 15:01:42 +0000 (15:01 +0000)]
[TargetLowering] x s% C == 0 fold: vector divisor with INT_MIN handling

Summary:
The general fold is only valid for positive divisors.
Which effectively means, it is invalid for `INT_MIN` divisors,
and we currently bailout if we see them.

But that is too strict, we can just fix-up the results.
For that, let's do a second computation 'in parallel':
```
Name: srem -> and
Pre: isPowerOf2(C)
%o = srem i8 %X, C
%r = icmp eq %o, 0
  =>
%n = and i8 %X, C-1
%r = icmp eq %n, 0
```
https://rise4fun.com/Alive/Sup

And then just blend results: if the divisor was `INT_MIN`,
pick the value we got via bit-test,
else pick the value from general fold.

There's interesting observation - `ISD::ROTR` is set to
`LegalizeAction::Expand` before AVX512, so we should not
treat `INT_MIN` divisor as even; and as it can be seen
while `@test_srem_odd_even_one` improves on all run-lines,
`@test_srem_odd_even_INT_MIN` only improves for AVX512.

Reviewers: RKSimon, craig.topper, spatel

Reviewed By: RKSimon

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66300

llvm-svn: 369268

5 years ago[lldb][NFC] Stop using GetNumberOfMatches in CompletionRequest test
Raphael Isemann [Mon, 19 Aug 2019 14:52:48 +0000 (14:52 +0000)]
[lldb][NFC] Stop using GetNumberOfMatches in CompletionRequest test

This function is just a wrapper for GetNumberOfResults and will
be removed soon. This patch just changes all calls to GetNumberOfResults
where possible (which is currently just the unit test).

llvm-svn: 369267

5 years ago[nfc] Silent gcc warning
Serge Guelton [Mon, 19 Aug 2019 14:40:33 +0000 (14:40 +0000)]
[nfc] Silent gcc warning

llvm-svn: 369266

5 years ago[llvm-objdump] - Restore lost comment.
George Rimar [Mon, 19 Aug 2019 14:35:08 +0000 (14:35 +0000)]
[llvm-objdump] - Restore lost comment.

It was removed by mistake in r369263 (D66417).

llvm-svn: 369265

5 years agoAutomatically generate AVX512 test cases. NFC
Amaury Sechet [Mon, 19 Aug 2019 14:34:08 +0000 (14:34 +0000)]
Automatically generate AVX512 test cases. NFC

llvm-svn: 369264

5 years ago[Object/COFF.h] - Stop returning std::error_code in a few methods. NFCI.
George Rimar [Mon, 19 Aug 2019 14:32:23 +0000 (14:32 +0000)]
[Object/COFF.h] - Stop returning std::error_code in a few methods. NFCI.

There are 4 methods that return std::error_code now,
though they do not have to because they are always succeed.
I refactored them.

This allows to simplify the code in tools a bit.

llvm-svn: 369263

5 years ago[ELF] Move (copy relocation/canonical PLT) before error checking
Fangrui Song [Mon, 19 Aug 2019 14:30:12 +0000 (14:30 +0000)]
[ELF] Move (copy relocation/canonical PLT) before error checking

In processRelocAux(), we handle errors before copy relocation/canonical PLT.
This makes error checking a bit complex because we have to check for
conditions that will be allowed by copy relocation/canonical PLT.

Instead, move copy relocation/canonical PLT before error checking. This
simplifies the previous clumsy error checking code

`config->shared || (config->pie && expr == R_ABS && type != target->symbolicRel)`

to the simple `config->isPic`. Some diagnostics can be reported in
different ways. The code motion changes diagnostics for some contrived
test cases:

* copy-rel-pie-error.s -> copy-rel-pie2.s:
  It was rejected before but accepted now. ld.bfd also accepts the case.
* copy-errors.s: "cannot preempt symbol" changes to "symbol 'bar' has no type"
* got32{,x}-i386.s: the suggestion changes from "-fPIC or -Wl,-z,notext" to "-fPIE"
* x86-64-dyn-rel-error5.s: one diagnostic changes for -pie case

Reviewed By: peter.smith

Differential Revision: https://reviews.llvm.org/D66007

llvm-svn: 369262

5 years ago[PeepholeOptimizer] Don't assume bitcast def always has input
Jinsong Ji [Mon, 19 Aug 2019 14:19:04 +0000 (14:19 +0000)]
[PeepholeOptimizer] Don't assume bitcast def always has input

Summary:
If we have a MI marked with bitcast bits, but without input operands,
PeepholeOptimizer might crash with assert.

eg:
If we apply the changes in PPCInstrVSX.td as in this patch:

[(set v4i32:$XT, (bitconvert (v16i8 immAllOnesV)))]>;

We will get assert in PeepholeOptimizer.

```
llvm-lit llvm-project/llvm/test/CodeGen/PowerPC/build-vector-tests.ll -v

llvm-project/llvm/include/llvm/CodeGen/MachineInstr.h:417: const
llvm::MachineOperand &llvm::MachineInstr::getOperand(unsigned int)
const: Assertion `i < getNumOperands() && "getOperand() out of range!"'
failed.
```

The fix is to abort if we found out of bound access.

Reviewers: qcolombet, MatzeB, hfinkel, arsenm

Reviewed By: qcolombet

Subscribers: wdng, arsenm, steven.zhang, wuzish, nemanjai, hiraditya, kbarton, MaskRay, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65542

llvm-svn: 369261

5 years ago[ELF][Hexagon] Improve error message for unknown relocations
Fangrui Song [Mon, 19 Aug 2019 14:07:14 +0000 (14:07 +0000)]
[ELF][Hexagon] Improve error message for unknown relocations

Like rLLD354040

Previously, for unknown relocation types, in -no-pie/-pie mode, we got something like:

    foo.o: unrecognized relocation ...

In -shared mode:

    error: can't create dynamic relocation ... against symbol: yyy in readonly segment

Delete the default case from Hexagon::getRelExpr and add the error there. We will get consistent error message like `error: unknown relocation (1024) against symbol foo`

Reviewed By: sidneym

Differential Revision: https://reviews.llvm.org/D66275

llvm-svn: 369260

5 years agoDon't keep stale pointers to LoopInfos.
Aaron Ballman [Mon, 19 Aug 2019 13:37:41 +0000 (13:37 +0000)]
Don't keep stale pointers to LoopInfos.

CGLoopInfo was keeping pointers to parent loop LoopInfos, but when the loop info vector grew, it reallocated the storage and invalidated all of the parent pointers, causing use-after-free. Manage the lifetimes of the LoopInfos separately so that the pointers aren't stale.

Patch by Bevin Hansson.

llvm-svn: 369259

5 years ago[lld][Hexagon] Add GOTREL relocations.
Sid Manning [Mon, 19 Aug 2019 13:32:32 +0000 (13:32 +0000)]
[lld][Hexagon] Add GOTREL relocations.

Add GOTREL relocation support. (S + A - GOT)

Differential Revision: https://reviews.llvm.org/D66260

llvm-svn: 369258

5 years ago[RISCV] Don't force absolute FK_Data_X fixups to relocs
Alex Bradbury [Mon, 19 Aug 2019 13:23:02 +0000 (13:23 +0000)]
[RISCV] Don't force absolute FK_Data_X fixups to relocs

The current behavior of shouldForceRelocation forces relocations for the
majority of fixups when relaxation is enabled. This makes sense for
fixups which incorporate symbols but is unnecessary for simple data
fixups where the fixup target is already resolved to an absolute value.

Differential Revision: https://reviews.llvm.org/D63404
Patch by Edward Jones.

llvm-svn: 369257

5 years ago[DebugInfo] Allow bundled calls in the MIR's call site info
David Stenberg [Mon, 19 Aug 2019 12:41:22 +0000 (12:41 +0000)]
[DebugInfo] Allow bundled calls in the MIR's call site info

Summary:
Extend the MIR parser and writer so that the call site information can
refer to calls that are bundled.

Reviewers: aprantl, asowda, NikolaPrica, djtodoro, ivanbaev, vsk

Reviewed By: aprantl

Subscribers: arsenm, hiraditya, llvm-commits

Tags: #debug-info, #llvm

Differential Revision: https://reviews.llvm.org/D66145

llvm-svn: 369256

5 years ago[SLP] add test that requires shuffle of scalars; NFC
Sanjay Patel [Mon, 19 Aug 2019 12:41:09 +0000 (12:41 +0000)]
[SLP] add test that requires shuffle of scalars; NFC

llvm-svn: 369255

5 years ago[llvm-readobj] unwrapOrError: remove unnecessary llvm_unreachable after r369194
Fangrui Song [Mon, 19 Aug 2019 12:18:18 +0000 (12:18 +0000)]
[llvm-readobj] unwrapOrError: remove unnecessary llvm_unreachable after r369194

llvm-svn: 369254

5 years ago[OpenCL] Add generic type handling for builtin functions
Sven van Haastregt [Mon, 19 Aug 2019 11:56:03 +0000 (11:56 +0000)]
[OpenCL] Add generic type handling for builtin functions

Generic types are an abstraction of type sets.  It mimics the way
functions are defined in the OpenCL specification.  For example,
floatN can abstract all the vector sizes of the float type.

This allows to
 * stick more closely to the specification, which uses generic types;
 * factorize definitions of functions with numerous prototypes in the
   tablegen file; and
 * reduce the memory impact of functions with many overloads.

Patch by Pierre Gondois and Sven van Haastregt.

Differential Revision: https://reviews.llvm.org/D65456

llvm-svn: 369253

5 years ago[lldb][NFC] Use CompletionRequest in Variable::AutoComplete
Raphael Isemann [Mon, 19 Aug 2019 11:49:43 +0000 (11:49 +0000)]
[lldb][NFC] Use CompletionRequest in Variable::AutoComplete

llvm-svn: 369252

5 years ago[OpenCL] Fix addr space deduction for pointers/references to arrays.
Anastasia Stulova [Mon, 19 Aug 2019 11:43:16 +0000 (11:43 +0000)]
[OpenCL] Fix addr space deduction for pointers/references to arrays.

Rewrite the logic for detecting if we are deducing addr space of
a pointee type to take into account special logic for arrays. For
pointers/references to arrays we can have any number of parentheses
expressions as well as nested pointers.

Differential Revision: https://reviews.llvm.org/D66137

llvm-svn: 369251

5 years ago[SLP] reduce duplicated code; NFC
Sanjay Patel [Mon, 19 Aug 2019 11:39:56 +0000 (11:39 +0000)]
[SLP] reduce duplicated code; NFC

llvm-svn: 369250

5 years ago[lldb][NFC] Add a few more completion tests to increase test coverage
Raphael Isemann [Mon, 19 Aug 2019 10:46:38 +0000 (10:46 +0000)]
[lldb][NFC] Add a few more completion tests to increase test coverage

These tests are mostly trying to reach the different completion functions
in CommandCompletions.cpp (::ArchitectureNames, ::DiskFiles, ::Modules).

llvm-svn: 369249

5 years ago[MC] Simplify ELFObjectWriter::recordRelocation. NFC
Fangrui Song [Mon, 19 Aug 2019 10:05:59 +0000 (10:05 +0000)]
[MC] Simplify ELFObjectWriter::recordRelocation. NFC

llvm-svn: 369248

5 years ago[DebugInfo] Make postra sinking of DBG_VALUEs subregister-safe
Jeremy Morse [Mon, 19 Aug 2019 09:53:07 +0000 (09:53 +0000)]
[DebugInfo] Make postra sinking of DBG_VALUEs subregister-safe

Currently the machine instruction sinker identifies DBG_VALUE insts that
also need to sink by comparing register numbers. Unfortunately this isn't
safe, because (after register allocation) a DBG_VALUE may read a register
that aliases what's being sunk. To fix this, identify the DBG_VALUEs that
need to sink by recording & examining their register units. Register units
gives us the following guarantee:

  "Two registers overlap if and only if they have a common register unit"
  [MCRegisterInfo.h]

Thus we can always identify aliasing DBG_VALUEs if the set of register
units read by the DBG_VALUE, and the register units of the instruction
being sunk, intersect. (MachineSink already uses classes like
"LiveRegUnits" for determining sinking validity anyway).

The test added checks for super and subregister DBG_VALUE reads of a sunk
copy being sunk as well.

Differential Revision: https://reviews.llvm.org/D58191

llvm-svn: 369247

5 years ago[ELF][ARM] Add a test that maxes out the thunk convergence limit
Peter Smith [Mon, 19 Aug 2019 09:46:52 +0000 (09:46 +0000)]
[ELF][ARM] Add a test that maxes out the thunk convergence limit

Add a test that takes the maximum amount of passes permitted to converge.
This will make sure that any symbol defined in a linker script gets the
correct value and that any other convergence limit involving symbol address
doesn't restrict Thunk convergence.

Differential Revision: https://reviews.llvm.org/D66346

llvm-svn: 369246

5 years ago[ARM] Add support for MVE vaddv
Sam Tebbs [Mon, 19 Aug 2019 09:38:28 +0000 (09:38 +0000)]
[ARM] Add support for MVE vaddv

This patch adds vecreduce_add and the relevant instruction selection for
vaddv.

Differential revision: https://reviews.llvm.org/D66085

llvm-svn: 369245

5 years ago[ARM] MVE sext costs
David Green [Mon, 19 Aug 2019 09:13:22 +0000 (09:13 +0000)]
[ARM] MVE sext costs

This adds some sext costs for MVE, taken from the length of assembly sequences
that we currently generate.

Differential Revision: https://reviews.llvm.org/D66010

llvm-svn: 369244

5 years ago[DebugInfo] Test for variable range un-coalescing
Jeremy Morse [Mon, 19 Aug 2019 09:02:18 +0000 (09:02 +0000)]
[DebugInfo] Test for variable range un-coalescing

LiveDebugVariables can coalesce ranges of variable locations across
multiple basic blocks. However when it recreates DBG_VALUE instructions,
it has to recreate one DBG_VALUE per block, otherwise it doesn't
represent the pre-regalloc layout and variable assignments can go missing.

This feature works -- however while mucking around with LiveDebugVariables,
I commented the relevant code it out and no tests failed. Thus, here's a
test that checks LiveDebugVariables preserves DBG_VALUEs across block
boundaries.

Differential Revision: https://reviews.llvm.org/D66347

llvm-svn: 369243

5 years ago[lldb][NFC] Remove StringList::AutoComplete
Raphael Isemann [Mon, 19 Aug 2019 08:15:46 +0000 (08:15 +0000)]
[lldb][NFC] Remove StringList::AutoComplete

We don't need this very specific function in StringList that
we only call once in LLDB.

llvm-svn: 369242

5 years agoRevert [Attributor] Fix: Make sure we set the changed flag
David L. Jones [Mon, 19 Aug 2019 08:00:08 +0000 (08:00 +0000)]
Revert [Attributor] Fix: Make sure we set the changed flag

This reverts r369159 (git commit cbaf1fdea2de891bdbc49cdec89ae2077e6b9ed0)

r369160 caused a test to fail under UBSAN. See thread on llvm-commits.

llvm-svn: 369241

5 years ago[lldb][NFC] Use GetMaxStringLength in CommandObjectApropos::DoExecute
Raphael Isemann [Mon, 19 Aug 2019 07:59:44 +0000 (07:59 +0000)]
[lldb][NFC] Use GetMaxStringLength in CommandObjectApropos::DoExecute

llvm-svn: 369240

5 years ago[MC] Delete unnecessary diagnostic: "No relocation available to represent this relati...
Fangrui Song [Mon, 19 Aug 2019 07:59:35 +0000 (07:59 +0000)]
[MC] Delete unnecessary diagnostic: "No relocation available to represent this relative expression"

Replace

- error: No relocation available to represent this relative expression

with

+ error: symbol 'undef' can not be undefined in a subtraction expression

or

+ error: Cannot represent a difference across sections

Keep !IsPcRel as an assertion after the two diagnostic checks are done.

llvm-svn: 369239

5 years ago[clangd] Added special HighlightingKind for function parameters.
Johan Vikstrom [Mon, 19 Aug 2019 07:51:39 +0000 (07:51 +0000)]
[clangd] Added special HighlightingKind for function parameters.

Summary: This means that function parameters are no longer highlighted as variable.other.cpp but instead as variable.parameter.cpp which is the more "correct" TextMate scope for them.

Reviewers: hokein, ilya-biryukov

Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66335

llvm-svn: 369238

5 years ago[lldb][NFC] Address review comments to StringList for-loop support
Raphael Isemann [Mon, 19 Aug 2019 07:22:19 +0000 (07:22 +0000)]
[lldb][NFC] Address review comments to StringList for-loop support

llvm-svn: 369237

5 years agoRevert [Attributor] Fix: Do not partially resolve returned calls.
David L. Jones [Mon, 19 Aug 2019 07:16:24 +0000 (07:16 +0000)]
Revert [Attributor] Fix: Do not partially resolve returned calls.

This reverts r369160 (git commit f72d9b1c97b41fff48ad1eecbba59a29c171bff4)

r369160 caused some tests to fail under UBSAN. See thread on llvm-commits.

llvm-svn: 369236

5 years ago[lldb] Remove unused inheritance in RegularExpression
Jan Kratochvil [Mon, 19 Aug 2019 07:06:56 +0000 (07:06 +0000)]
[lldb] Remove unused inheritance in RegularExpression

D66174 left inherited llvm::Regex which is now a member variable there.

Approved as a part of: https://reviews.llvm.org/D66392#1634575

llvm-svn: 369235

5 years agoRevert r369230 and r369231
Seiya Nuta [Mon, 19 Aug 2019 06:45:48 +0000 (06:45 +0000)]
Revert r369230 and r369231

Looks these commits break CI builds:

- http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-gn/builds/4159

This commit reverts r369230 and r369231 (git coommit: 4a198a7 and dee9546).

llvm-svn: 369234

5 years ago[MC] Don't emit .symver redirected symbols to the symbol table
Fangrui Song [Mon, 19 Aug 2019 06:17:30 +0000 (06:17 +0000)]
[MC] Don't emit .symver redirected symbols to the symbol table

GNU as keeps the original symbol in the symbol table for defined @ and
@@, but suppresses it in other cases (@@@ or undefined). The original
symbol is usually undesired:
In a shared object, the original symbol can be localized with a version
script, but it is hard to remove/localize in an archive:

1) a post-processing step removes the undesired original symbol
2) consumers (executable) of the archive are built with the
   version script

Moreover, it can cause linker issues like binutils PR/18703 if the
original symbol name and the base name of the versioned symbol is the
same (both ld.bfd and gold have some code to work around defined @ and
@@). In lld, if it sees f and f@v1:

  --version-script =(printf 'v1 {};') => f and f@v1
  --version-script =(printf 'v1 { f; };') => f@v1 and f@@v1

It can be argued that @@@ added on 2000-11-13 corrected the @ and @@ mistake.

This patch catches some more multiple version errors (defined @ and @@),
and consistently suppress the original symbol. This addresses all the
problems listed above.

If the user wants other aliases to the versioned symbol, they can copy
the original symbol to other symbol names with .set directive, e.g.

    .symver f, f@v1  # emit f@v1 but not f into .symtab
    .set f_impl, f   # emit f_impl into .symtab

llvm-svn: 369233

5 years ago[X86] Teach lower1BitShuffle to match right shifts with upper zero elements on types...
Craig Topper [Mon, 19 Aug 2019 05:45:39 +0000 (05:45 +0000)]
[X86] Teach lower1BitShuffle to match right shifts with upper zero elements on types that don't natively support KSHIFT.

We can support these by widening to a supported type,
then shifting all the way to the left and then
back to the right to ensure that we shift in zeroes.

llvm-svn: 369232

5 years ago[llvm-objcopy][MachO] Implement a layout algorithm for executables
Seiya Nuta [Mon, 19 Aug 2019 05:41:33 +0000 (05:41 +0000)]
[llvm-objcopy][MachO] Implement a layout algorithm for executables

Summary: The layout algorithm for relocatable objects and for executable are somewhat different. This patch implements the latter one based on the algorithm in LLD (MachOFileLayout).

Reviewers: alexshap, rupprecht, jhenderson

Reviewed By: alexshap

Subscribers: jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65539

llvm-svn: 369231

5 years ago[llvm-objcopy][MachO] Support load commands used in executables/shared libraries
Seiya Nuta [Mon, 19 Aug 2019 05:37:38 +0000 (05:37 +0000)]
[llvm-objcopy][MachO] Support load commands used in executables/shared libraries

Summary:
This patch implements copying some load commands that appear in executables/shared libraries such as the indirect symbol table.

I don't add tests intentionally because this patch is incomplete: we need a layout algorithm for executables/shared libraries. I'll submit it as a separate patch with tests.

Reviewers: alexshap, rupprecht, jhenderson, compnerd

Reviewed By: alexshap

Subscribers: abrachet, mgorny, mgrang, MaskRay, mtrent, jakehehrlich, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D63395

llvm-svn: 369230

5 years ago[clangd] Update features table in the docs with links to LSP extension proposals
Nathan Ridge [Mon, 19 Aug 2019 05:11:15 +0000 (05:11 +0000)]
[clangd] Update features table in the docs with links to LSP extension proposals

Also update the semantic coloring entry to reflect it being supported in
clangd now.

Reviewers: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D65373

llvm-svn: 369229

5 years ago[X86] Fix the lower1BitShuffle code added in r369215 to correctly pass the widened...
Craig Topper [Mon, 19 Aug 2019 04:08:44 +0000 (04:08 +0000)]
[X86] Fix the lower1BitShuffle code added in r369215 to correctly pass the widened vector to the KSHIFT node.

Not sure how to test this as we have tests that exercise this code,
but nothing failed for the types not matching. Since all the k-registers
use equivalent register classes everything just ends up working.

llvm-svn: 369228

5 years ago[X86] Teach lower1BitShuffle to match KSHIFTR that doesn't use Zeroable and only...
Craig Topper [Mon, 19 Aug 2019 04:08:40 +0000 (04:08 +0000)]
[X86] Teach lower1BitShuffle to match KSHIFTR that doesn't use Zeroable and only relies on undef.

This allows us to widen the type when the KSHIFTR instruction
doesn't exist for the type. If we need to shift in zeroes into
the upper elements we would need more work to guarantee zeroes
when widening.

llvm-svn: 369227

5 years ago[X86] Teach lower1BitShuffle to recognize padding a subvector with zeros with V2...
Craig Topper [Mon, 19 Aug 2019 00:39:22 +0000 (00:39 +0000)]
[X86] Teach lower1BitShuffle to recognize padding a subvector with zeros with V2 as the source and V1 as the zero vector.

Shuffle canonicalization can swap the sources so the zero vector
might be V1 and the subvector that's being padded can be V2.

llvm-svn: 369226

5 years ago[X86] Add test case for missed opportunity to recognize a vXi1 shuffle as an insert...
Craig Topper [Mon, 19 Aug 2019 00:39:18 +0000 (00:39 +0000)]
[X86] Add test case for missed opportunity to recognize a vXi1 shuffle as an insert into a zero vector.

We are currently missing this because shuffle canonicalization
puts the zero vector as V1 and the subvector as V2. Our current
code doesn't recognize this case.

llvm-svn: 369225

5 years ago[X86] Add a special case to LowerCONCAT_VECTORSvXi1 to handle concatenating zero...
Craig Topper [Sun, 18 Aug 2019 23:30:11 +0000 (23:30 +0000)]
[X86] Add a special case to LowerCONCAT_VECTORSvXi1 to handle concatenating zero vectors followed by one non-zero vector followed by undef vectors.

For such a case we should only need a KSHIFTL, but we were
previously generating a KSHIFTL followed by a KSHIFTR because
we mistakenly believed we need to zero the undef elements.

llvm-svn: 369224

5 years ago[X86] Add test cases for suboptimal insertion of a vXi1 vector into a larger vector...
Craig Topper [Sun, 18 Aug 2019 23:30:07 +0000 (23:30 +0000)]
[X86] Add test cases for suboptimal insertion of a vXi1 vector into a larger vector with zeros in the lower elements and undef upper elements.

Currently we generate kshifts to clear both the upper and lower
elements, but we only need one kshift.

llvm-svn: 369223

5 years ago[X86] Replace uses of getZeroVector for vXi1 vectors with DAG.getConstant.
Craig Topper [Sun, 18 Aug 2019 23:30:03 +0000 (23:30 +0000)]
[X86] Replace uses of getZeroVector for vXi1 vectors with DAG.getConstant.

vXi1 vectors don't need special handling.

llvm-svn: 369222

5 years ago[cmake] Move blocks out of redundant else( MSVC ); NFC
Hubert Tong [Sun, 18 Aug 2019 22:02:24 +0000 (22:02 +0000)]
[cmake] Move blocks out of redundant else( MSVC ); NFC

Address post-commit comment on D66256 regarding the `else( MSVC )` block
containing only blocks guarded with `LLVM_COMPILER_IS_GCC_COMPATIBLE`,
which would imply `NOT MSVC`.

llvm-svn: 369221

5 years ago[CMake] Update CMAKE_OSX_DEPLOYMENT_TARGET to 10.12.
Jonas Devlieghere [Sun, 18 Aug 2019 21:54:26 +0000 (21:54 +0000)]
[CMake] Update CMAKE_OSX_DEPLOYMENT_TARGET to 10.12.

After LLVM moved to C++14, the RWMutex implementation was removed in
favor of std::shared_timed_mutex, which is only available on macOS
10.12 and later. As a workaround for older deployment targets, I added
   the original RWMutexImpl again, guarded by the deployment target.

When doing a standalone build of LLDB using the Xcode generator, the
CMake cache specifies a minimum deployment target. However, LLVM and
Clang might have been built with a different minimum deployment target.

This is exactly what happened for the Xcode build. LLVM was built with a
minimum deployment target newer than 10.12, using
std::shared_timed_mutex. LLDB on the other hand was built with a minimum
deployment target of 10.11, using the old RWMutexImpl, resulting in
undefined symbols at link-time.

This patch changes the minimum deployment target for the Xcode build to
10.12 to work around this problem. A better solution would involve
synchronizing the minimum deployment or even not setting one at all.

llvm-svn: 369220

5 years ago[ORC] Make sure we linker-mangle symbol names in the SpeculationLayer.
Lang Hames [Sun, 18 Aug 2019 21:29:57 +0000 (21:29 +0000)]
[ORC] Make sure we linker-mangle symbol names in the SpeculationLayer.

If mangling is not performed then speculative lookups will fail.

llvm-svn: 369219

5 years ago[ORC] Remove some dead code.
Lang Hames [Sun, 18 Aug 2019 21:22:14 +0000 (21:22 +0000)]
[ORC] Remove some dead code.

llvm-svn: 369218

5 years ago[Diagnostics] Diagnose misused xor as pow
David Bolvansky [Sun, 18 Aug 2019 19:14:14 +0000 (19:14 +0000)]
[Diagnostics] Diagnose misused xor as pow

Summary:
Motivation:
https://twitter.com/jfbastien/status/1139298419988549632
https://twitter.com/mikemx7f/status/1139335901790625793
https://codesearch.isocpp.org/cgi-bin/cgi_ppsearch?q=10+%5E&search=Search

Reviewers: jfb, rsmith, regehr, aaron.ballman

Reviewed By: aaron.ballman

Subscribers: lebedev.ri, Quuxplusone, erik.pilkington, riccibruno, dexonsmith, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D63423

llvm-svn: 369217

5 years ago[Docs] Test commit
DeForest Richards [Sun, 18 Aug 2019 19:07:10 +0000 (19:07 +0000)]
[Docs] Test commit

Fixes typo - Removes extra space between last word of sentence and period.

llvm-svn: 369216

5 years ago[X86] Improve lower1BitShuffle handling for KSHIFTL on narrow vectors.
Craig Topper [Sun, 18 Aug 2019 18:52:46 +0000 (18:52 +0000)]
[X86] Improve lower1BitShuffle handling for KSHIFTL on narrow vectors.

We can insert the value into a larger legal type and shift that
by the desired amount.

llvm-svn: 369215

5 years ago[clang-format] Fix a bug that joins template closer and =
Owen Pan [Sun, 18 Aug 2019 18:51:39 +0000 (18:51 +0000)]
[clang-format] Fix a bug that joins template closer and =

Also fixes the documentation for SpaceBeforeAssignmentOperators.

See discussions at https://reviews.llvm.org/D66332

Differential Revision: https://reviews.llvm.org/D66384

llvm-svn: 369214

5 years agoFix signed/unsigned comparison warning. NFCI.
Simon Pilgrim [Sun, 18 Aug 2019 17:26:30 +0000 (17:26 +0000)]
Fix signed/unsigned comparison warning. NFCI.

llvm-svn: 369213

5 years ago[X86] isTargetShuffleEquivalent - add BUILD_VECTOR matching
Simon Pilgrim [Sun, 18 Aug 2019 17:15:26 +0000 (17:15 +0000)]
[X86] isTargetShuffleEquivalent - add BUILD_VECTOR matching

Add similar functionality to isShuffleEquivalent - if the mask elements don't match, try matching the BUILD_VECTOR scalars instead.

As target shuffles need to handle SM_Sentinel values, this can get a bit tricky, so commit just adds actual mask element index handling - full SM_SentinelZero support will be added when the need arises.

Also, enables support in matchVectorShuffleWithPACK

llvm-svn: 369212

5 years ago[X86] isTargetShuffleEquivalent - early out on illegal shuffle masks. NFCI.
Simon Pilgrim [Sun, 18 Aug 2019 16:37:58 +0000 (16:37 +0000)]
[X86] isTargetShuffleEquivalent - early out on illegal shuffle masks. NFCI.

Simplifies shuffle mask comparisons by just bailing out if the shuffle mask has any out of range values - will make an upcoming patch much simpler.

llvm-svn: 369211

5 years ago[X86][SSE] Improve PACKSS shuffle tests to better match codegen from D61129
Simon Pilgrim [Sun, 18 Aug 2019 15:39:04 +0000 (15:39 +0000)]
[X86][SSE] Improve PACKSS shuffle tests to better match codegen from D61129

D61129 creates 'concat + trunc' style patterns (at the 128-bit subvector level)

llvm-svn: 369209

5 years ago[MC] MCFixup - Fix cppcheck + MSVC analyzer uninitialized member variable warnings...
Simon Pilgrim [Sun, 18 Aug 2019 13:29:12 +0000 (13:29 +0000)]
[MC] MCFixup - Fix cppcheck + MSVC analyzer uninitialized member variable warnings. NFCI.

llvm-svn: 369208

5 years ago[InstCombine] Cherry-pick NFC cleanups of foldShiftIntoShiftInAnotherHandOfAndInICmp...
Roman Lebedev [Sun, 18 Aug 2019 12:26:33 +0000 (12:26 +0000)]
[InstCombine] Cherry-pick NFC cleanups of foldShiftIntoShiftInAnotherHandOfAndInICmp() from D66383

llvm-svn: 369207

5 years ago[Diagnostics] Improve -Wsizeof-pointer-div
David Bolvansky [Sun, 18 Aug 2019 10:10:09 +0000 (10:10 +0000)]
[Diagnostics] Improve -Wsizeof-pointer-div

Emit diag note with a location of pointer declaration.
Revisited/added tests.

llvm-svn: 369206

5 years ago[TargetLowering] Teach computeRegisterProperties to only widen v3i16/v3f16 vectors...
Craig Topper [Sun, 18 Aug 2019 06:28:06 +0000 (06:28 +0000)]
[TargetLowering] Teach computeRegisterProperties to only widen v3i16/v3f16 vectors to the next power of 2 type if that's legal.

These were recently made simple types. This restores their
behavior back to something like their EVT legalization.

We might be able to fix the code in type legalization where the
assert was failing, but I didn't investigate too much as I had
already looked at the computeRegisterProperties code during the
review for v3i16/v3f16.

Most of the test changes restore the X86 codegen back to what
it looked like before the recent change. The test case in
vec_setcc.ll and is a reduced version of the reproducer from
the fuzzer.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16490

llvm-svn: 369205

5 years ago[SelectionDAG] Add a node creation debug message to getMachineNode.
Craig Topper [Sun, 18 Aug 2019 06:28:00 +0000 (06:28 +0000)]
[SelectionDAG] Add a node creation debug message to getMachineNode.

llvm-svn: 369204

5 years agoAMDGPU: Fix iterator error when lowering SI_END_CF
Matt Arsenault [Sun, 18 Aug 2019 00:20:44 +0000 (00:20 +0000)]
AMDGPU: Fix iterator error when lowering SI_END_CF

If the instruction is the last in the block, there is no next
instruction but the iteration still needs to look at the new block.

llvm-svn: 369203

5 years agoAMDGPU: Disambiguate v3f16 format in load/store tables
Matt Arsenault [Sun, 18 Aug 2019 00:20:43 +0000 (00:20 +0000)]
AMDGPU: Disambiguate v3f16 format in load/store tables

Currently the searchable tables report the number of dwords. These
round to the same number for 3 and 4 component d16
instructions. Change this to report the number of elements so this
isn't ambiguous.

llvm-svn: 369202

5 years agoTableGen: Revert changes from r369038
Matt Arsenault [Sun, 18 Aug 2019 00:20:42 +0000 (00:20 +0000)]
TableGen: Revert changes from r369038

These aren't needed for a specific use yet, and I meant to not commit
these.

llvm-svn: 369201

5 years ago[X86] Add a one use check to the combineStore code that handles v16i16->v16i8 truncat...
Craig Topper [Sat, 17 Aug 2019 22:46:15 +0000 (22:46 +0000)]
[X86] Add a one use check to the combineStore code that handles v16i16->v16i8 truncate+store by extending to v16i32 and then emitting a v16i32->v16i8 truncstore.

This prevent us from emitting a separate truncate and a truncating
store instruction.

llvm-svn: 369200

5 years ago[BPF] Fix bpf llvm-objdump issues.
Yonghong Song [Sat, 17 Aug 2019 22:12:00 +0000 (22:12 +0000)]
[BPF] Fix bpf llvm-objdump issues.

Commit https://reviews.llvm.org/D57939 ("[DWARF] Refactor
RelocVisitor and fix computation of SHT_RELA-typed relocation entries)
made a change for relocation resolution when operating
on an object file.

The change unfortunately broke BPF as given SymbolValue (S) and
Addent (A), previously relocation is resolved to
    S + A
and after the change, it is resolved to
    S

This patch fixed the issue by resolving relocation correctly.

It looks not all relocation resolution reaches here and I did not
trace down exactly when. But I do find if the object file includes
codes in two different ELF sections than default ".text",
the above bug will be triggered.

This patch included a trivial two function source code to
demonstrate this issue. The relocation for .debug_loc is resolved
incorrectly due to this and llvm-objdump cannot display source
annotated assembly.

Differential Revision: https://reviews.llvm.org/D66372

llvm-svn: 369199

5 years ago[lldb][NFC] Remove unused MaterializeInitializer and MaterializeInternalVariable
Raphael Isemann [Sat, 17 Aug 2019 21:57:51 +0000 (21:57 +0000)]
[lldb][NFC] Remove unused MaterializeInitializer and MaterializeInternalVariable

llvm-svn: 369198

5 years ago[NFC][InstCombine] Some tests for 'shift amount reassoc in bit test - trunc-of-lshr...
Roman Lebedev [Sat, 17 Aug 2019 21:35:33 +0000 (21:35 +0000)]
[NFC][InstCombine] Some tests for 'shift amount reassoc in bit test - trunc-of-lshr' (PR42399)

Finally, the fold i was looking forward to :)

The legality check is muddy, i doubt  i've groked the full generalization,
but it handles all the cases i care about, and can come up with:
https://rise4fun.com/Alive/26j

https://bugs.llvm.org/show_bug.cgi?id=42399

llvm-svn: 369197

5 years ago[SemaDeclCXX] Allow inheriting constructor declaration to specify a cv-qualified...
Tan S. B. [Sat, 17 Aug 2019 20:57:52 +0000 (20:57 +0000)]
[SemaDeclCXX] Allow inheriting constructor declaration to specify a cv-qualified type

Differential Revision: https://reviews.llvm.org/D47419

llvm-svn: 369196

5 years ago[analyzer] Turn an assert into an if condition
Kristof Umann [Sat, 17 Aug 2019 16:49:54 +0000 (16:49 +0000)]
[analyzer] Turn an assert into an if condition

Shocker, turns out that terminator conditions that are binary operators
aren't always logical operators.

llvm-svn: 369195

5 years agoRecommit r369190 "[llvm-readobj/llvm-readelf] - Improve/cleanup the error reporting...
George Rimar [Sat, 17 Aug 2019 16:07:18 +0000 (16:07 +0000)]
Recommit r369190 "[llvm-readobj/llvm-readelf] - Improve/cleanup the error reporting API."

Fix: Add a `consumeError` call removed by mistake to 'printStackSize',
this should fix the "Expected<T> must be checked before access or destruction." reported by following bot:
http://lab.llvm.org:8011/builders/clang-x64-windows-msvc/builds/9743/steps/stage%201%20check/logs/stdio

Original commit message:
Currently we have the following functions for error reporting:

LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg);
void reportError(Error Err, StringRef Input);
void reportWarning(Twine Msg);
void reportWarning(StringRef Input, Error Err);
void warn(llvm::Error Err);
void error(std::error_code EC);

Problems are: naming is inconsistent, arguments order is inconsistent,
some of the functions looks excessive.

After applying this patch we have:

void reportError(Error Err, StringRef Input);
void reportError(std::error_code EC, StringRef Input);
void reportWarning(Error Err, StringRef Input);

I'd be happy to remove reportError(std::error_code EC, StringRef Input) too, but it
is used by COFF heavily.

Test cases were updated, they show an improvement introduced.

Differential revision: https://reviews.llvm.org/D66286

llvm-svn: 369194

5 years agoRevert r369190, r369192 ([llvm-readobj/llvm-readelf] - Improve/cleanup the error...
George Rimar [Sat, 17 Aug 2019 15:36:06 +0000 (15:36 +0000)]
Revert r369190, r369192 ([llvm-readobj/llvm-readelf] - Improve/cleanup the error reporting API.)

It caused multiple BB failtures:

http://lab.llvm.org:8011/builders/clang-x64-windows-msvc/builds/9743/steps/stage%201%20check/logs/stdio
http://lab.llvm.org:8011/builders/clang-cmake-x86_64-sde-avx512-linux/builds/26042/steps/ninja%20check%201/logs/FAIL%3A%20LLVM%3A%3Astack-sizes.test

llvm-svn: 369193

5 years ago[llvm-readobj] - An attemp to fix BB after r369191.
George Rimar [Sat, 17 Aug 2019 15:24:16 +0000 (15:24 +0000)]
[llvm-readobj] - An attemp to fix BB after r369191.

Few BB failed with the following error:

Command Output (stderr):
--
/home/buildbots/ppc64be-clang-lnt-test/clang-ppc64be-lnt/llvm/test/tools/llvm-readobj/stack-sizes.test:263:19: error: BADSECTION-OUT: expected string not found in input
# BADSECTION-OUT: 8 ?
                  ^
<stdin>:4:1: note: scanning from here

^

It doesn't reproduce on ubuntu/windows I have. Also, seems many of the bots
are happy too.

This slightly reorders the code to make fouts().flush() call earlier,
like it was before the r369191.

llvm-svn: 369192

5 years ago[CodeGen] Do the Simple Early Return in block-placement pass to optimize the blocks
Kang Zhang [Sat, 17 Aug 2019 14:37:05 +0000 (14:37 +0000)]
[CodeGen] Do the Simple Early Return in block-placement pass to optimize the blocks

Summary:

Fix a bug of preducessors.

In `block-placement` pass, it will create some patterns for unconditional we can do the simple early retrun.
But the `early-ret` pass is before `block-placement`, we don't want to run it again.
This patch is to do the simple early return to optimize the blocks at the last of `block-placement`.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D63972

llvm-svn: 369191

5 years ago[llvm-readobj/llvm-readelf] - Improve/cleanup the error reporting API.
George Rimar [Sat, 17 Aug 2019 14:36:40 +0000 (14:36 +0000)]
[llvm-readobj/llvm-readelf] - Improve/cleanup the error reporting API.

urrently we have the following functions for error reporting:

--
LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg);
void reportError(Error Err, StringRef Input);
void reportWarning(Twine Msg);
void reportWarning(StringRef Input, Error Err);
void warn(llvm::Error Err);
void error(std::error_code EC);
---

Problems are: naming is inconsistent, arguments order is inconsistent,
some of the functions looks excessive.

After applying this patch we have:

---
LLVM_ATTRIBUTE_NORETURN void reportError(Error Err, StringRef Input);
LLVM_ATTRIBUTE_NORETURN void reportError(std::error_code EC, StringRef Input);
void reportWarning(Error Err, StringRef Input);
---

I'd be happy to remove reportError(std::error_code EC, StringRef Input) too, but it
is used by COFF heavily.

Test cases were updated, they show an improvement introduced.

Differential revision: https://reviews.llvm.org/D66286

llvm-svn: 369190

5 years ago[test] - Remove precomiled openbsd-phdrs.elf-x86-64 objects.
George Rimar [Sat, 17 Aug 2019 14:23:30 +0000 (14:23 +0000)]
[test] - Remove precomiled openbsd-phdrs.elf-x86-64 objects.

There are 2 similar openbsd-phdrs.elf-x86-64 objects committed and
used in test/Object and test/tools/llvm-objdump test cases.

There is no reason to have them, we can use YAML instead. Patch does that.

Differential revision: https://reviews.llvm.org/D66342

llvm-svn: 369189

5 years ago[circular_raw_ostream] Delegate is_displayed to contained stream
Troy A. Johnson [Sat, 17 Aug 2019 14:20:41 +0000 (14:20 +0000)]
[circular_raw_ostream] Delegate is_displayed to contained stream

raw_ostream has an is_displayed() member function that determines if the stream
is connected to a console for display or is connected to a file/pipe. By
default, is_displayed() returns false, and derived classes like raw_fd_ostream
override it. Because circular_raw_ostream wraps another stream, its result for
is_displayed() should be the same as that stream.

Differential Revision: https://reviews.llvm.org/D66026

llvm-svn: 369188

5 years ago[ELF] Replace local variable hasExportDynamic with config->exportDynamic. NFC
Fangrui Song [Sat, 17 Aug 2019 10:04:18 +0000 (10:04 +0000)]
[ELF] Replace local variable hasExportDynamic with config->exportDynamic. NFC

llvm-svn: 369187

5 years agoRevert Revert [AArch64InstrInfo] Stop getInstSizeInBytes returning non-zero for meta...
Paul Walker [Sat, 17 Aug 2019 09:22:36 +0000 (09:22 +0000)]
Revert Revert [AArch64InstrInfo] Stop getInstSizeInBytes returning non-zero for meta instructions.

This reverts r369132 (git commit 19301d75f086caae1a495d267f5d0264b225942d)

llvm-svn: 369186

5 years agoRevert [AArch64InstrInfo] Stop getInstSizeInBytes returning non-zero for meta instruc...
Paul Walker [Sat, 17 Aug 2019 09:22:28 +0000 (09:22 +0000)]
Revert [AArch64InstrInfo] Stop getInstSizeInBytes returning non-zero for meta instructions.

This reverts r369133 (git commit 2632c677f85cba1ac2aef5d68aaf8af0f5b3c944)

llvm-svn: 369185

5 years ago[ELF][PPC] Fix getRelExpr for R_PPC64_REL16_HI
Fangrui Song [Sat, 17 Aug 2019 06:28:03 +0000 (06:28 +0000)]
[ELF][PPC] Fix getRelExpr for R_PPC64_REL16_HI

Fixes https://github.com/ClangBuiltLinux/linux/issues/640

R_PPC64_REL16_HI was incorrectly computed as an R_ABS relocation.
rLLD368964 made it a linker failure. Change it to use R_PC to fix the
failures.

Add ppc64-reloc-rel.s for these R_PPC64_REL* tests.

llvm-svn: 369184

5 years ago[X86] Support -mlong-double-80
Troy A. Johnson [Sat, 17 Aug 2019 04:20:24 +0000 (04:20 +0000)]
[X86] Support -mlong-double-80

Add an option group for all of the -mlong-double-* options and make
-mlong-double-80 restore the default long double behavior for X86.  The
motivations are that GNU accepts the -mlong-double-80 option and that complex
Makefiles often need a way of undoing earlier options. Prior to this commit, if
one chooses 64-bit or 128-bit long double for X86, there is no way to undo that
choice and restore the 80-bit behavior.

Differential Revision: https://reviews.llvm.org/D66055

llvm-svn: 369183

5 years ago[clang-doc] Fix casting not working in gcc 5.4.0
Diego Astiazaran [Sat, 17 Aug 2019 01:45:03 +0000 (01:45 +0000)]
[clang-doc] Fix casting not working in gcc 5.4.0

An implicit cast of std::string to llvm::SmallString<> was breaking GCC 5.4.0 builder.
A pair using llvm::SmallString<> now uses std::string.

Differential Revision: https://reviews.llvm.org/D66378

llvm-svn: 369182

5 years ago[MemorySSA] Loop passes should mark MSSA preserved when available.
Alina Sbirlea [Sat, 17 Aug 2019 01:02:12 +0000 (01:02 +0000)]
[MemorySSA] Loop passes should mark MSSA preserved when available.

This patch applies only to the new pass manager.
Currently, when MSSA Analysis is available, and pass to each loop pass, it will be preserved by that loop pass.
Hence, mark the analysis preserved based on that condition, vs the current `EnableMSSALoopDependency`. This leaves the global flag to affect only the entry point in the loop pass manager (in FunctionToLoopPassAdaptor).

llvm-svn: 369181

5 years ago[Fuchsia] Create the VMO during initialization, not during exit
Petr Hosek [Sat, 17 Aug 2019 00:54:22 +0000 (00:54 +0000)]
[Fuchsia] Create the VMO during initialization, not during exit

We want to avoid doing expensive work during atexit since the process
might be terminated before we can publish the VMO and write out the
symbolizer markup, so move the VMO creation to the initialization
phase and only write data during the atexit phase.

Differential Revision: https://reviews.llvm.org/D66323

llvm-svn: 369180

5 years agoSimplify code (NFC).
Adrian Prantl [Sat, 17 Aug 2019 00:38:58 +0000 (00:38 +0000)]
Simplify code (NFC).

llvm-svn: 369179

5 years ago[llvm-readobj] Unwrap the value first to avoid the error
Petr Hosek [Sat, 17 Aug 2019 00:07:26 +0000 (00:07 +0000)]
[llvm-readobj] Unwrap the value first to avoid the error

This addresses the issue introduced in r369169, we need to unwrap
the value first before we can check whether it's empty. This also
swaps the two branches to put the common path first which should
be NFC.

llvm-svn: 369177

5 years agoAdd LLDB dataformatters for llvm::StringRef and lldb_private::ConstString
Adrian Prantl [Fri, 16 Aug 2019 23:47:57 +0000 (23:47 +0000)]
Add LLDB dataformatters for llvm::StringRef and lldb_private::ConstString

These data formatters make the string value appear in Xcode's
variables view (and on the command line) without having to expand the
data structure.

Differential Revision: https://reviews.llvm.org/D66354

llvm-svn: 369175

5 years agoRevert r367891 - "[InstCombine] combine mul+shl separated by zext"
Sanjay Patel [Fri, 16 Aug 2019 23:36:28 +0000 (23:36 +0000)]
Revert r367891 - "[InstCombine] combine mul+shl separated by zext"

This reverts commit 5dbb90bfe14ace30224239cac7c61a1422fa5144.

As noted in the post-commit thread for r367891, this can create
a multiply that is lowered to a libcall that may not exist.

We need to improve the backend decomposition for integer multiply
before trying to re-land this (if it's still worthwhile after
doing the backend work).

llvm-svn: 369174

5 years agoReland "[ARM] push LR before __gnu_mcount_nc"
Jian Cai [Fri, 16 Aug 2019 23:30:16 +0000 (23:30 +0000)]
Reland "[ARM] push LR before __gnu_mcount_nc"

This relands r369147 with fixes to unit tests.

https://reviews.llvm.org/D65019

llvm-svn: 369173

5 years ago[AArch64][GlobalISel] Fix an assertion during G_UNMERGE selection for s128 types.
Amara Emerson [Fri, 16 Aug 2019 23:23:40 +0000 (23:23 +0000)]
[AArch64][GlobalISel] Fix an assertion during G_UNMERGE selection for s128 types.

llvm-svn: 369172

5 years ago[ORC] Re-introduce self-dependence accidentally dropped from a unit test.
Lang Hames [Fri, 16 Aug 2019 23:20:54 +0000 (23:20 +0000)]
[ORC] Re-introduce self-dependence accidentally dropped from a unit test.

llvm-svn: 369171

5 years agoRevert "[X86] Support -mlong-double-80"
Troy A. Johnson [Fri, 16 Aug 2019 23:18:22 +0000 (23:18 +0000)]
Revert "[X86] Support -mlong-double-80"

This reverts commit 250aafa2c4a1bc2395edfe8d4365545bbe56fffe.
Caused buildbot failures -- still investigating.

llvm-svn: 369170

5 years ago[llvm-readobj] Fallback to PT_NOTE if file doesn't have sections
Petr Hosek [Fri, 16 Aug 2019 23:15:40 +0000 (23:15 +0000)]
[llvm-readobj] Fallback to PT_NOTE if file doesn't have sections

This is useful when trying to read notes from stripped files and matches
the behavior of GNU readelf and eu-readelf.

Differential Revision: https://reviews.llvm.org/D66358

llvm-svn: 369169

5 years ago[CodeGenPrepare] Fix use-after-free
Sanjay Patel [Fri, 16 Aug 2019 23:10:34 +0000 (23:10 +0000)]
[CodeGenPrepare] Fix use-after-free

If OptimizeExtractBits() encountered a shift instruction with no operands at all,
it would erase the instruction, but still return false.

This previously didn’t matter because its caller would always return after
processing the instruction, but https://reviews.llvm.org/D63233 changed the
function’s caller to fall through if it returned false, which would then cause
a use-after-free detectable by ASAN.

This change makes OptimizeExtractBits return true if it removes a shift
instruction with no users, terminating processing of the instruction.

Patch by: @brentdax (Brent Royal-Gordon)

Differential Revision: https://reviews.llvm.org/D66330

llvm-svn: 369168