platform/upstream/llvm.git
6 years ago[clang] Store code completion token range in preprocessor.
Kadir Cetinkaya [Mon, 13 Aug 2018 08:13:35 +0000 (08:13 +0000)]
[clang] Store code completion token range in preprocessor.

Summary:
This change is to support a new fature in clangd, tests will be send toclang-tools-extra with that change.

Unittests are included in: https://reviews.llvm.org/D50449

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

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

Differential Revision: https://reviews.llvm.org/D50443

llvm-svn: 339540

6 years ago[GuardWidening] Widen very likely non-taken br instructions
Max Kazantsev [Mon, 13 Aug 2018 07:58:19 +0000 (07:58 +0000)]
[GuardWidening] Widen very likely non-taken br instructions

This is a second part of D49974 that handles widening of conditional branches that
have very likely `false` branch.

Differential Revision: https://reviews.llvm.org/D50040
Reviewed By: reames

llvm-svn: 339537

6 years ago[SelectionDAG] In PromoteFloatOp_BITCAST, insert a bitcast after the fp_to_fp16 in...
Craig Topper [Mon, 13 Aug 2018 06:53:49 +0000 (06:53 +0000)]
[SelectionDAG] In PromoteFloatOp_BITCAST, insert a bitcast after the fp_to_fp16 in case the result type isn't a scalar integer.

This is another variation of PR38533. In this case, the result type of the bitcast is legal and 16-bits wide, but not a scalar integer. So we need to emit the convert to i16 and then bitcast it to the true result type. This new bitcast will be further type legalized if necessary.

llvm-svn: 339536

6 years ago[SelectionDAG] In PromoteIntRes_BITCAST, when the input is TypePromoteFloat, make...
Craig Topper [Mon, 13 Aug 2018 06:53:47 +0000 (06:53 +0000)]
[SelectionDAG] In PromoteIntRes_BITCAST, when the input is TypePromoteFloat, make sure the output type is scalar. For vectors, use a store and load of temporary.

Previously if the result type was a vector, we emitted a FP_TO_FP16 with a vector result type which isn't valid.

This is basically the opposite case of the root cause of PR38533.

llvm-svn: 339535

6 years agoRestore correct x86_64 EH encodings in kernel code model
Lei Liu [Mon, 13 Aug 2018 06:06:53 +0000 (06:06 +0000)]
Restore correct x86_64 EH encodings in kernel code model

Fixes PR37524.

The exception handling encodings for x86_64 in kernel code model
has been changed with r309884.  Restore it to correct ones.  These
encodings include PersonalityEncoding, LSDAEncoding and
TTypeEncoding.

Differential Revision: https://reviews.llvm.org/D50490

llvm-svn: 339534

6 years ago[SelectionDAG] In PromoteFloatRes_BITCAST, insert a bitcast before the fp16_to_fp...
Craig Topper [Mon, 13 Aug 2018 05:26:49 +0000 (05:26 +0000)]
[SelectionDAG] In PromoteFloatRes_BITCAST, insert a bitcast before the fp16_to_fp in case the input type isn't an i16.

The bitcast can be further legalized as needed.

Fixes PR38533.

llvm-svn: 339533

6 years ago[InstCombine] Fix typo in comment. NFC
Craig Topper [Mon, 13 Aug 2018 00:54:23 +0000 (00:54 +0000)]
[InstCombine] Fix typo in comment. NFC

llvm-svn: 339532

6 years ago[InstCombine] Replace call to haveNoCommonBitsSet in visitXor with just the special...
Craig Topper [Mon, 13 Aug 2018 00:38:27 +0000 (00:38 +0000)]
[InstCombine] Replace call to haveNoCommonBitsSet in visitXor with just the special case that doesn't use computeKnownBits.

Summary: computeKnownBits is expensive. The cases that would be detected by the computeKnownBits portion of haveNoCommonBitsSet were already handled by the earlier call to SimplifyDemandedInstructionBits.

Reviewers: spatel, lebedev.ri

Reviewed By: lebedev.ri

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D50604

llvm-svn: 339531

6 years ago[ASTMatchers] Let hasAnyArgument also support CXXUnresolvedConstructExpr
Shuai Wang [Sun, 12 Aug 2018 23:30:05 +0000 (23:30 +0000)]
[ASTMatchers] Let hasAnyArgument also support CXXUnresolvedConstructExpr

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D50605

llvm-svn: 339530

6 years ago[X86] Add constant folding for AVX512 versions of scalar floating point to integer...
Craig Topper [Sun, 12 Aug 2018 22:09:54 +0000 (22:09 +0000)]
[X86] Add constant folding for AVX512 versions of scalar floating point to integer conversion intrinsics.

Summary:
We've supported constant folding for sse versions for many years. This patch adds support for the avx512 versions including unsigned with the default rounding mode. We could probably do more with other roundings modes and SAE in the future.

The test cases are largely based on the sse.ll test cases. But I did add some test cases to ensure the unsigned versions don't accept negative values. Also checked the bounds of f64->i32 conversions to make sure unsigned has a larger positive range than signed.

Reviewers: RKSimon, spatel, chandlerc

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D50553

llvm-svn: 339529

6 years ago[globalisel] Remove dead code from GlobalISelEmitter
Daniel Sanders [Sun, 12 Aug 2018 21:49:42 +0000 (21:49 +0000)]
[globalisel] Remove dead code from GlobalISelEmitter

Summary: Found by GCC's -Wunused-function.

Patch by Kim Gräsman

Reviewers: ab, dsanders, llvm-commits

Reviewed By: dsanders

Subscribers: rovka, kristof.beyls

Differential Revision: https://reviews.llvm.org/D50611

llvm-svn: 339528

6 years agoRenaming arg_const_range to const_arg_range; NFC.
Aaron Ballman [Sun, 12 Aug 2018 21:19:22 +0000 (21:19 +0000)]
Renaming arg_const_range to const_arg_range; NFC.

This form makes more sense (it is a range over constant arguments) and is most consistent with const_arg_iterator (there are zero instances of arg_const_iterator).

llvm-svn: 339527

6 years agoAMDGPU: Cleanup min/max legacy tests
Matt Arsenault [Sun, 12 Aug 2018 19:29:53 +0000 (19:29 +0000)]
AMDGPU: Cleanup min/max legacy tests

Also add some more tests in preparation for
a future patch.

llvm-svn: 339526

6 years agoDAG: Check no-signed-zeros instead of unsafe-fp-math
Matt Arsenault [Sun, 12 Aug 2018 19:09:12 +0000 (19:09 +0000)]
DAG: Check no-signed-zeros instead of unsafe-fp-math

Addresses fixme, although this should still be checking individual
operand flags.

llvm-svn: 339525

6 years ago[NFC] Fixed build, updated tests
David Bolvansky [Sun, 12 Aug 2018 18:32:53 +0000 (18:32 +0000)]
[NFC] Fixed build, updated tests

llvm-svn: 339524

6 years ago[NFC] Renamed test file
David Bolvansky [Sun, 12 Aug 2018 17:43:27 +0000 (17:43 +0000)]
[NFC] Renamed test file

llvm-svn: 339523

6 years ago[ASTMatchers] Add matchers unresolvedMemberExpr, cxxDependentScopeMemberExpr
Shuai Wang [Sun, 12 Aug 2018 17:34:36 +0000 (17:34 +0000)]
[ASTMatchers] Add matchers unresolvedMemberExpr, cxxDependentScopeMemberExpr

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D50606

llvm-svn: 339522

6 years ago[Support][JSON][NFC] Silence GCC warning about broken strict aliasing rules
David Bolvansky [Sun, 12 Aug 2018 17:31:46 +0000 (17:31 +0000)]
[Support][JSON][NFC] Silence GCC warning about broken strict aliasing rules

Summary:
The as<T>() method would trigger the following warning on GCC <7:

   warning: dereferencing type-punned pointer will break
       strict-aliasing rules [-Wstrict-aliasing]

     return *reinterpret_cast<T *>(Union.buffer);
                                               ^

Union.buffer is guaranteed to be aligned to whatever types it contains,
and json::Value maintains the invariant that it only calls as<T>() for a
T it has previously placement-newed into Union.buffer. This should
follow the rules for strict aliasing.

Using two static_cast via void * instead of reinterpret_cast
silences the warning and presumably makes GCC understand that no
strict-aliasing violation is happening.

No functional change intended.

Patch by: kimgr (Kim Gräsman)

Reviewers: sammccall, xiangzhai, HaoLiu, llvm-commits, xbolva00

Reviewed By: sammccall, xbolva00

Subscribers: xbolva00

Differential Revision: https://reviews.llvm.org/D50608

llvm-svn: 339521

6 years ago[InstCombine] Fold Select with binary op - non-commutative opcodes
David Bolvansky [Sun, 12 Aug 2018 17:30:07 +0000 (17:30 +0000)]
[InstCombine] Fold Select with binary op - non-commutative opcodes

Summary:
Basic version was merged - https://reviews.llvm.org/D49954

This adds support for FP & non-commutative opcodes

Precommited tests: https://reviews.llvm.org/rL338727

Reviewers: spatel, lebedev.ri

Reviewed By: spatel

Subscribers: jfb

Differential Revision: https://reviews.llvm.org/D50190

llvm-svn: 339520

6 years ago[InstCombine] fix/enhance fadd/fsub factorization
Sanjay Patel [Sun, 12 Aug 2018 15:48:26 +0000 (15:48 +0000)]
[InstCombine] fix/enhance fadd/fsub factorization
  (X * Z) + (Y * Z) --> (X + Y) * Z
  (X * Z) - (Y * Z) --> (X - Y) * Z
  (X / Z) + (Y / Z) --> (X + Y) / Z
  (X / Z) - (Y / Z) --> (X - Y) / Z

The existing code that implemented these folds failed to
optimize vectors, and it transformed code with multiple
uses when it should not have.

llvm-svn: 339519

6 years ago[InstCombine] move/add tests for fadd/fsub factorization; NFC
Sanjay Patel [Sun, 12 Aug 2018 15:06:15 +0000 (15:06 +0000)]
[InstCombine] move/add tests for fadd/fsub factorization; NFC

llvm-svn: 339518

6 years agoAdding the readability module to the list of dependencies for the C++ Core Guidelines...
Aaron Ballman [Sun, 12 Aug 2018 14:47:16 +0000 (14:47 +0000)]
Adding the readability module to the list of dependencies for the C++ Core Guidelines module. Amends r339516 for a failing bot.

llvm-svn: 339517

6 years agoAdd a new check to the readability module that flags uses of "magic numbers" (both...
Aaron Ballman [Sun, 12 Aug 2018 14:35:13 +0000 (14:35 +0000)]
Add a new check to the readability module that flags uses of "magic numbers" (both floating-point and integral).

Patch by Florin Iucha <florin@signbit.net>

llvm-svn: 339516

6 years ago[InstSimplify] Guard against large shift amounts.
Benjamin Kramer [Sun, 12 Aug 2018 11:43:03 +0000 (11:43 +0000)]
[InstSimplify] Guard against large shift amounts.

These are always UB, but can happen for large integer inputs. Testing it
is very fragile as -simplifycfg will nuke the UB top-down.

llvm-svn: 339515

6 years ago[LLD][ELF] - Add one more test case for CallGraphSort.
George Rimar [Sun, 12 Aug 2018 09:16:22 +0000 (09:16 +0000)]
[LLD][ELF] - Add one more test case for CallGraphSort.

This adds a coverage for the following early continue:
https://github.com/llvm-mirror/lld/blob/master/ELF/CallGraphSort.cpp#L200

llvm-svn: 339514

6 years agoAMDGPU: Check NSZ MI flag when folding omod
Matt Arsenault [Sun, 12 Aug 2018 08:44:25 +0000 (08:44 +0000)]
AMDGPU: Check NSZ MI flag when folding omod

I'm not sure the exact nsz flag combination that
is OK. I think as long as it's on either, this is OK.
For now just check it on the omod multiply.

llvm-svn: 339513

6 years agoAMDGPU: Use splat vectors for undefs when folding canonicalize
Matt Arsenault [Sun, 12 Aug 2018 08:42:54 +0000 (08:42 +0000)]
AMDGPU: Use splat vectors for undefs when folding canonicalize

If one of the elements is undef, use the canonicalized constant
from the other element instead of 0.

Splat vectors are more useful for other optimizations, such
as matching vector clamps. This was breaking on clamps
of half3 from the undef 4th component.

llvm-svn: 339512

6 years agoAMDGPU: Fix packing undef parts of build_vector
Matt Arsenault [Sun, 12 Aug 2018 08:42:46 +0000 (08:42 +0000)]
AMDGPU: Fix packing undef parts of build_vector

llvm-svn: 339511

6 years ago[LLF][ELF] - Simplify. NFC.
George Rimar [Sun, 12 Aug 2018 07:52:24 +0000 (07:52 +0000)]
[LLF][ELF] - Simplify. NFC.

llvm-svn: 339510

6 years ago[TargetLowering] Simplify one of the special cases in SimplifyDemandedBits for XOR...
Craig Topper [Sun, 12 Aug 2018 06:52:03 +0000 (06:52 +0000)]
[TargetLowering] Simplify one of the special cases in SimplifyDemandedBits for XOR. NFCI

We were checking for all bits being Known by checking Known.Zero|Known.One, but if all the bits are known then the value should be a Constant and we can just check for that instead.

llvm-svn: 339509

6 years ago[TargetLowering] Use APInt::isSubsetOf to simplify some code. NFC
Craig Topper [Sun, 12 Aug 2018 05:34:15 +0000 (05:34 +0000)]
[TargetLowering] Use APInt::isSubsetOf to simplify some code. NFC

llvm-svn: 339508

6 years ago[X86] Remove unnecessary AddedComplexity line. NFC
Craig Topper [Sun, 12 Aug 2018 03:22:18 +0000 (03:22 +0000)]
[X86] Remove unnecessary AddedComplexity line. NFC

The use of the or_is_add predicate already gives enough of a complexity boost to get the patterns ordered properly.

llvm-svn: 339507

6 years ago[ASTImporter] Added test case for opaque enums
Raphael Isemann [Sat, 11 Aug 2018 23:43:46 +0000 (23:43 +0000)]
[ASTImporter] Added test case for opaque enums

Reviewers: a.sidorin, a_sidorin

Reviewed By: a_sidorin

Subscribers: a_sidorin, martong, cfe-commits

Differential Revision: https://reviews.llvm.org/D50550

llvm-svn: 339506

6 years ago[ASTImporter] Added test case for CXXConversionDecl importing
Raphael Isemann [Sat, 11 Aug 2018 23:43:02 +0000 (23:43 +0000)]
[ASTImporter] Added test case for CXXConversionDecl importing

Reviewers: a.sidorin, a_sidorin

Reviewed By: a_sidorin

Subscribers: a_sidorin, martong, cfe-commits

Differential Revision: https://reviews.llvm.org/D50552

llvm-svn: 339505

6 years agoUse a DenseMap for looking up functions by UID in CompileUnit::FindFunctionByUID
Raphael Isemann [Sat, 11 Aug 2018 23:40:27 +0000 (23:40 +0000)]
Use a DenseMap for looking up functions by UID in CompileUnit::FindFunctionByUID

Summary:
Instead of iterating over our vector of functions, we might as well use a map here to
directly get the function we need.

Thanks to Vedant for pointing this out.

Reviewers: vsk

Reviewed By: vsk

Subscribers: mgrang, lldb-commits

Differential Revision: https://reviews.llvm.org/D50225

llvm-svn: 339504

6 years agoAdd missing _LIBCXXABI_FUNC_VIS to __gxx_personality_seh0
Martin Storsjo [Sat, 11 Aug 2018 19:36:06 +0000 (19:36 +0000)]
Add missing _LIBCXXABI_FUNC_VIS to __gxx_personality_seh0

This was missed in SVN r337754.

llvm-svn: 339503

6 years ago[Dominators] Remove the DeferredDominance class
Chijun Sima [Sat, 11 Aug 2018 08:12:07 +0000 (08:12 +0000)]
[Dominators] Remove the DeferredDominance class

Summary: After converting all existing passes to use the new DomTreeUpdater interface, there isn't any usage of the original DeferredDominance class. Thus, we can safely remove it from the codebase.

Reviewers: kuhar, brzycki, dmgreen, davide, grosser

Reviewed By: kuhar, brzycki

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D49747

llvm-svn: 339502

6 years ago[UnJ] Improve explicit loop count checks
David Green [Sat, 11 Aug 2018 07:37:31 +0000 (07:37 +0000)]
[UnJ] Improve explicit loop count checks

Try to improve the computed counts when it has been explicitly set by a pragma
or command line option. This moves the code around, so that first call to
computeUnrollCount to get a sensible count and override that if explicit unroll
and jam counts are specified.

Also added some extra debug messages for when unroll and jamming is disabled.

Differential Revision: https://reviews.llvm.org/D50075

llvm-svn: 339501

6 years ago[UnJ] Create a hasInvariantIterationCount function. NFC
David Green [Sat, 11 Aug 2018 06:57:28 +0000 (06:57 +0000)]
[UnJ] Create a hasInvariantIterationCount function. NFC

Pulled out a separate function for some code that calculates
if an inner loop iteration count is invariant to it's outer
loop.

Differential Revision: https://reviews.llvm.org/D50063

llvm-svn: 339500

6 years ago[X86] Remove the AL/AX/EAX/RAX short immediate forms from the macro fusion shouldSche...
Craig Topper [Sat, 11 Aug 2018 06:42:51 +0000 (06:42 +0000)]
[X86] Remove the AL/AX/EAX/RAX short immediate forms from the macro fusion shouldScheduleAdjacent. NFC

These instructions are only created by the backend during MCInst lowering.

llvm-svn: 339499

6 years ago[X86] Add the mem-reg form of CMP to the macro fusion shouldScheduleAdjacent.
Craig Topper [Sat, 11 Aug 2018 06:42:50 +0000 (06:42 +0000)]
[X86] Add the mem-reg form of CMP to the macro fusion shouldScheduleAdjacent.

Unlike the other arithmetic instructions the mem-reg form of compare is just a load and not a RMW operation. According to the Intel optimization manual, this form is also supported by macro fusion.

llvm-svn: 339498

6 years ago[X86] Remove ADD8mi and ADDmr from the macro fusion shouldScheduleAdjacent.
Craig Topper [Sat, 11 Aug 2018 06:42:49 +0000 (06:42 +0000)]
[X86] Remove ADD8mi and ADDmr from the macro fusion shouldScheduleAdjacent.

The are RMW of memory operations. They aren't eligible for macro fusion.

llvm-svn: 339497

6 years ago[X86] Change the MOV32ri64 pseudo instruction to def a GR64 directly instead of wrapp...
Craig Topper [Sat, 11 Aug 2018 05:33:00 +0000 (05:33 +0000)]
[X86] Change the MOV32ri64 pseudo instruction to def a GR64 directly instead of wrapping it in a SUBREG_TO_REG.

Now we switch to the subregister in expandPostRAPseudos where we already switched the opcode.

This simplifies a few isel patterns that used the pseudo directly. And magically seems to have improved our ability to CSE it in the undef-label.ll test.

llvm-svn: 339496

6 years agoFix WebAssembly instruction printer after r339474
Richard Trieu [Sat, 11 Aug 2018 04:18:05 +0000 (04:18 +0000)]
Fix WebAssembly instruction printer after r339474

Treat the stack variants of control instructions the same as regular
instructions.  Otherwise, the vector ControlFlowStack will be the wrong
size and have out-of-bounds access.  This was detected by MemorySanitizer.

llvm-svn: 339495

6 years agoMake the section boundary checks on Windows not depend on the order as they are emitt...
Douglas Yung [Sat, 11 Aug 2018 02:46:47 +0000 (02:46 +0000)]
Make the section boundary checks on Windows not depend on the order as they are emitted in reverse when the compiler is built by Visual C++.

llvm-svn: 339494

6 years ago[analyzer] Fix keyboard navigation for .msgNote events
George Karpenkov [Sat, 11 Aug 2018 01:47:41 +0000 (01:47 +0000)]
[analyzer] Fix keyboard navigation for .msgNote events

Does not go to msgNote's.

Differential Revision: https://reviews.llvm.org/D50595

llvm-svn: 339493

6 years ago[gold] Fix Tests cases on i686
Tom Stellard [Sat, 11 Aug 2018 01:08:34 +0000 (01:08 +0000)]
[gold] Fix Tests cases on i686

Reviewers: tejohnson

Reviewed By: tejohnson

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D50583

llvm-svn: 339492

6 years agoAMDGPU/GlobalISel: Define instruction mapping for G_INSERT
Tom Stellard [Sat, 11 Aug 2018 00:51:54 +0000 (00:51 +0000)]
AMDGPU/GlobalISel: Define instruction mapping for G_INSERT

Reviewers: arsenm

Reviewed By: arsenm

Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, rovka, kristof.beyls, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D49625

llvm-svn: 339491

6 years agoFix WebAssembly tests after r339474
Richard Trieu [Fri, 10 Aug 2018 23:58:11 +0000 (23:58 +0000)]
Fix WebAssembly tests after r339474

Add flags to llc RUN lines to keep tests passing.

llvm-svn: 339490

6 years ago[analyzer] InnerPointerChecker: improve warning messages and notes.
Reka Kovacs [Fri, 10 Aug 2018 23:56:57 +0000 (23:56 +0000)]
[analyzer] InnerPointerChecker: improve warning messages and notes.

Differential Revision: https://reviews.llvm.org/D49570

llvm-svn: 339489

6 years ago[analyzer] [NFC] [tests] Move plist-based diagnostics tests to separate files, use...
George Karpenkov [Fri, 10 Aug 2018 23:51:43 +0000 (23:51 +0000)]
[analyzer] [NFC] [tests] Move plist-based diagnostics tests to separate files, use diff instead of a FileCheck - II

Some files were missed by https://reviews.llvm.org/D50545

Differential Revision: https://reviews.llvm.org/D50590

llvm-svn: 339488

6 years ago[ELF][HEXAGON] Put test back in.
Sid Manning [Fri, 10 Aug 2018 23:46:11 +0000 (23:46 +0000)]
[ELF][HEXAGON] Put test back in.

The registers are tied.

llvm-svn: 339487

6 years ago[ELF][HEXAGON] Remove test that breaks assembler.
Sid Manning [Fri, 10 Aug 2018 22:54:54 +0000 (22:54 +0000)]
[ELF][HEXAGON] Remove test that breaks assembler.

Remove testcase the breaks the assembler parser.  Will fix llvm-mc
and put this back afterward.

llvm-svn: 339486

6 years agoRe-commit "[NFC] More ConstantMerge refactoring"
JF Bastien [Fri, 10 Aug 2018 22:41:09 +0000 (22:41 +0000)]
Re-commit "[NFC] More ConstantMerge refactoring"

My previous change moved some code upwards which caused an assert in debug mode
because the global value didn't necessarily have an initializer. Don't do that.

llvm-svn: 339485

6 years ago[DepInfo] Use isl++ in Dependences::isValidSchedule. NFC.
Michael Kruse [Fri, 10 Aug 2018 22:33:27 +0000 (22:33 +0000)]
[DepInfo] Use isl++ in Dependences::isValidSchedule. NFC.

Also change StatementToIslMapTy to hold isl::map, because it is used as a
parameter.

llvm-svn: 339484

6 years ago[clangd] Avoid duplicates in findDefinitions response
Simon Marchi [Fri, 10 Aug 2018 22:27:53 +0000 (22:27 +0000)]
[clangd] Avoid duplicates in findDefinitions response

Summary:
When compile_commands.json contains some source files expressed as
relative paths, we can get duplicate responses to findDefinitions.  The
responses only differ by the URI, which are different versions of the
same file:

    "result": [
        {
            ...
            "uri": "file:///home/emaisin/src/ls-interact/cpp-test/build/../src/first.h"
        },
        {
            ...
            "uri": "file:///home/emaisin/src/ls-interact/cpp-test/src/first.h"
        }
    ]

In getAbsoluteFilePath, we try to obtain the realpath of the FileEntry
by calling tryGetRealPathName.  However, this can fail and return an
empty string.  It may be bug a bug in clang, but in any case we should
fall back to computing it ourselves if it happens.

I changed getAbsoluteFilePath so that if tryGetRealPathName succeeds, we
return right away (a real path is always absolute).  Otherwise, we try
to build an absolute path, as we did before, but we also call
VFS->getRealPath to make sure to get the canonical path (e.g. without
any ".." in it).

Reviewers: malaperle

Subscribers: hokein, ilya-biryukov, ioeric, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D48687

llvm-svn: 339483

6 years ago[analyzer] Record nullability implications on getting items from NSDictionary
George Karpenkov [Fri, 10 Aug 2018 22:27:04 +0000 (22:27 +0000)]
[analyzer] Record nullability implications on getting items from NSDictionary

If we get an item from a dictionary, we know that the item is non-null
if and only if the key is non-null.

This patch is a rather hacky way to record this implication, because
some logic needs to be duplicated from the solver.
And yet, it's pretty simple, performant, and works.

Other possible approaches:

 - Record the implication, in future rely on Z3 to pick it up.
 - Generalize the current code and move it to the constraint manager.

rdar://34990742

Differential Revision: https://reviews.llvm.org/D50124

llvm-svn: 339482

6 years ago[LICM] Hoist assumes out of loops
Philip Reames [Fri, 10 Aug 2018 22:21:56 +0000 (22:21 +0000)]
[LICM] Hoist assumes out of loops

If we have an assume which is known to execute and whose operand is invariant, we can lift that into the pre-header. So long as we don't change which paths the assume executes on, this is a legal transformation. It's likely to be a useful canonicalization as other transforms only look for dominating assumes.

Differential Revision: https://reviews.llvm.org/D50364

llvm-svn: 339481

6 years agoRevert "[NFC] More ConstantMerge refactoring"
JF Bastien [Fri, 10 Aug 2018 22:10:20 +0000 (22:10 +0000)]
Revert "[NFC] More ConstantMerge refactoring"

Sanitizers seem unhappy.

llvm-svn: 339480

6 years agoFix unused lambda capture warning from r339472.
Eli Friedman [Fri, 10 Aug 2018 22:03:25 +0000 (22:03 +0000)]
Fix unused lambda capture warning from r339472.

llvm-svn: 339479

6 years ago[NFC] More ConstantMerge refactoring
JF Bastien [Fri, 10 Aug 2018 21:58:00 +0000 (21:58 +0000)]
[NFC] More ConstantMerge refactoring

This makes my upcoming patch much easier to read.

llvm-svn: 339478

6 years ago[ELF][HEXAGON] Add R_HEX_8_X relocation
Sid Manning [Fri, 10 Aug 2018 21:48:40 +0000 (21:48 +0000)]
[ELF][HEXAGON] Add R_HEX_8_X relocation

Differential Revision: https://reviews.llvm.org/D50577

llvm-svn: 339477

6 years ago[analyzer] Fix tracking expressions through negation operator
George Karpenkov [Fri, 10 Aug 2018 21:42:19 +0000 (21:42 +0000)]
[analyzer] Fix tracking expressions through negation operator

Differential Revision: https://reviews.llvm.org/D50537

llvm-svn: 339476

6 years ago[analyzer] [NFC] [tests] Move plist-based diagnostics tests to separate files, use...
George Karpenkov [Fri, 10 Aug 2018 21:36:45 +0000 (21:36 +0000)]
[analyzer] [NFC] [tests] Move plist-based diagnostics tests to separate files, use diff instead of a FileCheck

Some of the analyzer tests check the exact plist output, in order to
verify that the diagnostics produced is correct.
Current testing setup has many issues:

plist output clobbers tests, making them harder to read
it is impossible to debug test failures given error messages from FileCheck.
The only recourse is manually creating the files and using the diff
again, it is impossible to update the tests given the error message:
the only process is a tedious manual one,
going from a separate plist file to CHECK directives.

This patch offers a much better approach of using "diff" directly in place of FileCheck,
and moving tests to separate files.

Generated using the following script:

```
import os
import glob
import re
import subprocess

diagnostics_key = "// CHECK:  <key>diagnostics</key>"

def process_file(f, data):
    idx = data.index(diagnostics_key)
    plist_out_f = 'ExpectedOutputs/plists/%s.plist' % f
    plist_out_folder = os.path.join('ExpectedOutputs/plists/', os.path.dirname(f))
    plist_data = data[idx:]
    plist_data = plist_data.replace('// CHECK: ', '')
    plist_data = plist_data.replace('// CHECK-NEXT: ', '')
    plist_data += "</dict>\n</plist>\n"
    data = data[:idx]

    ptn = re.compile("FileCheck --?input-file(=| )(%t|%t\.plist) %s")

    if not ptn.findall(data):
        print "none found =/ skipping..."
        return

    data = ptn.sub(lambda m: "tail -n +11 %s | diff -u -w - %%S/../%s" % (m.group(2), plist_out_f), data)

    with open(f, 'w') as out_f:
        out_f.write(data)

    subprocess.check_call(["mkdir", "-p", plist_out_folder])
    with open(plist_out_f, 'w') as out_f:
        out_f.write(plist_data)

def main():
    files = glob.glob("**/*.*")
    for f in files:
        with open(f) as f_handler:
            data = f_handler.read()
        if diagnostics_key in data:
            print "Converting %s" %f
            process_file(f, data)

if __name__ == "__main__":
    main()
```

Differential Revision: https://reviews.llvm.org/D50545

llvm-svn: 339475

6 years ago[WebAssembly] Added default stack-only instruction mode for MC.
Wouter van Oortmerssen [Fri, 10 Aug 2018 21:32:47 +0000 (21:32 +0000)]
[WebAssembly] Added default stack-only instruction mode for MC.

Summary:
Moved Explicit Locals pass to last.
Made that pass obligatory.
Made it convert from register to stack based instructions, and removed the registers.
Fixes to related code that was expecting register based instructions.
Added the correct testing flag to all tests, depending on what the
format they were expecting so far.
Translated one test to stack format as example: reg-stackify-stack.ll

tested:
llvm-lit -v `find test -name WebAssembly`
unittests/MC/*

Reviewers: dschuff, sunfish

Subscribers: jfb, llvm-commits, aheejin, eraman, jgravelle-google, sbc100

Differential Revision: https://reviews.llvm.org/D50568

llvm-svn: 339474

6 years agoRemove copy-pasted and unrelated comment [NFC]
Raphael Isemann [Fri, 10 Aug 2018 21:31:44 +0000 (21:31 +0000)]
Remove copy-pasted and unrelated comment [NFC]

That comment was copied from the
CombineConsecutiveEntriesWithEqualData() implementation below,
and doesn't actually describe what's happening in the current
function.

llvm-svn: 339473

6 years ago[ARM] Adjust AND immediates to make them cheaper to select.
Eli Friedman [Fri, 10 Aug 2018 21:21:53 +0000 (21:21 +0000)]
[ARM] Adjust AND immediates to make them cheaper to select.

LLVM normally prefers to minimize the number of bits set in an AND
immediate, but that doesn't always match the available ARM instructions.
In Thumb1 mode, prefer uxtb or uxth where possible; otherwise, prefer
a two-instruction sequence movs+ands or movs+bics.

Some potential improvements outlined in
ARMTargetLowering::targetShrinkDemandedConstant, but seems to work
pretty well already.

The ARMISelDAGToDAG fix ensures we don't generate an invalid UBFX
instruction due to a larger-than-expected mask. (It's orthogonal, in
some sense, but as far as I can tell it's either impossible or nearly
impossible to reproduce the bug without this change.)

According to my testing, this seems to consistently improve codesize by
a small amount by forming bic more often for ISD::AND with an immediate.

Differential Revision: https://reviews.llvm.org/D50030

llvm-svn: 339472

6 years ago[MS Demangler] Support extern "C" functions.
Zachary Turner [Fri, 10 Aug 2018 21:09:05 +0000 (21:09 +0000)]
[MS Demangler] Support extern "C" functions.

There are two cases we need to support with extern "C"
functions.  The first is the case of a '9' indicating that
the function has no prototype.  This occurs when we mangle
a symbol inside of an extern "C" function, but not the
function itself.

The second case is when we have an overloaded extern "C"
functions.  In this case we emit $$J0 to indicate this.
This patch adds support for both of these cases.

llvm-svn: 339471

6 years ago[InstCombine] add tests for fsub factorization; NFC
Sanjay Patel [Fri, 10 Aug 2018 21:00:27 +0000 (21:00 +0000)]
[InstCombine] add tests for fsub factorization; NFC

The tests show that;
1. The fold doesn't fire for vectors, but it should.
2. The fold fires regardless of uses, but it shouldn't.

llvm-svn: 339470

6 years ago[InstCombine] rearrange code for foldSelectBinOpIdentity; NFCI
Sanjay Patel [Fri, 10 Aug 2018 20:30:35 +0000 (20:30 +0000)]
[InstCombine] rearrange code for foldSelectBinOpIdentity; NFCI

This is a retry of rL339439 with a fix for the problem that
caused the original commit to be reverted at rL339446.

That problem was that the compare can be integer while
the binop is FP or vice-versa, so we need to use the binop
type when we ask for the identity constant.

A test to guard against the problem was added at rL339453.

llvm-svn: 339469

6 years ago[llvm-mca] Make InstrBuilder::getOrCreateInstrDesc private. NFC.
Matt Davis [Fri, 10 Aug 2018 20:24:27 +0000 (20:24 +0000)]
[llvm-mca] Make InstrBuilder::getOrCreateInstrDesc private. NFC.

llvm-svn: 339468

6 years ago[InstCombine] add tests to show disabling of libcall/intrinsic shrinking; NFC
Sanjay Patel [Fri, 10 Aug 2018 20:12:36 +0000 (20:12 +0000)]
[InstCombine] add tests to show disabling of libcall/intrinsic shrinking; NFC

llvm-svn: 339467

6 years agoResubmit r339450 - [MS Demangler] Add conversion operator tests
Zachary Turner [Fri, 10 Aug 2018 20:08:46 +0000 (20:08 +0000)]
Resubmit r339450 - [MS Demangler] Add conversion operator tests

This was broken because of a malformed check line.  Incidentally,
this exposed a case where we crash when we should just be returning
an error, so we should fix that.  The demangler shouldn't crash due
to user input.

llvm-svn: 339466

6 years ago[MS Demangler] Demangle cv qualifiers on template args.
Zachary Turner [Fri, 10 Aug 2018 19:57:36 +0000 (19:57 +0000)]
[MS Demangler] Demangle cv qualifiers on template args.

Before we wouldn't properly demangle something like
Foo<const int>.  Template args have a special escape sequence
'$$C' that is optional, but if it is present contains
qualifiers.  So we need to check for this and only if it
present, demangle qualifiers before demangling the type.

With this fix, we re-enable some tests that were previously
marked FIXME.

llvm-svn: 339465

6 years agoAMDGPU: More canonicalized operations
Matt Arsenault [Fri, 10 Aug 2018 19:20:17 +0000 (19:20 +0000)]
AMDGPU: More canonicalized operations

llvm-svn: 339464

6 years agorevert r339450 - [MS Demangler] Add conversion operator tests
Sanjay Patel [Fri, 10 Aug 2018 19:20:16 +0000 (19:20 +0000)]
revert r339450 - [MS Demangler] Add conversion operator tests

Something here causes an assertion failure that killed a bunch of bots.
Example:
http://lab.llvm.org:8011/builders/reverse-iteration/builds/7021/steps/check_all/logs/stdio

llvm-svn: 339463

6 years agoAMDGPU: Combine and of seto/setuo and fp_class
Matt Arsenault [Fri, 10 Aug 2018 18:58:56 +0000 (18:58 +0000)]
AMDGPU: Combine and of seto/setuo and fp_class

Clear the nan (or non-nan) test bits from the mask.

llvm-svn: 339462

6 years agoAMDGPU: Turn class x, p_zero|n_zero into fcmp oeq x, 0
Matt Arsenault [Fri, 10 Aug 2018 18:58:49 +0000 (18:58 +0000)]
AMDGPU: Turn class x, p_zero|n_zero into fcmp oeq x, 0

The library does use this for some reason.

llvm-svn: 339461

6 years agoAMDGPU: Match isfinite pattern to class instructions
Matt Arsenault [Fri, 10 Aug 2018 18:58:41 +0000 (18:58 +0000)]
AMDGPU: Match isfinite pattern to class instructions

llvm-svn: 339460

6 years agoInvalidate static locals when escaping lambdas
George Karpenkov [Fri, 10 Aug 2018 18:28:04 +0000 (18:28 +0000)]
Invalidate static locals when escaping lambdas

Lambdas can affect static locals even without an explicit capture.

rdar://39537031

Differential Revision: https://reviews.llvm.org/D50368

llvm-svn: 339459

6 years agoAMDGPU: Add LLVM_FALLTHROUGH
Matt Arsenault [Fri, 10 Aug 2018 17:57:12 +0000 (17:57 +0000)]
AMDGPU: Add LLVM_FALLTHROUGH

llvm-svn: 339458

6 years ago[tests, libstdcxx] Add missing test category on the TestDataFormatterStdUniquePtr...
Stella Stamenova [Fri, 10 Aug 2018 17:52:45 +0000 (17:52 +0000)]
[tests, libstdcxx] Add missing test category on the TestDataFormatterStdUniquePtr tests

Each test needs to be marked with the add_test_categories decorator individually.

llvm-svn: 339457

6 years agoAllow relockable scopes with thread safety attributes.
Aaron Ballman [Fri, 10 Aug 2018 17:33:47 +0000 (17:33 +0000)]
Allow relockable scopes with thread safety attributes.

Patch by Aaron Puchert

llvm-svn: 339456

6 years agoUpdate the coding standards and developer policy documentation surrounding whitespace.
Aaron Ballman [Fri, 10 Aug 2018 17:26:07 +0000 (17:26 +0000)]
Update the coding standards and developer policy documentation surrounding whitespace.

Clarify that you should not introduce trailing whitespace when making a commit and that you should not remove trailing whitespace that's unrelated to code you are changing or are about to change. Then clarified the developer policy around what is considered an obvious whitespace commit.

llvm-svn: 339455

6 years ago[clangd] extend the publishDiagnostics response to send back fixits to the
Alex Lorenz [Fri, 10 Aug 2018 17:25:07 +0000 (17:25 +0000)]
[clangd] extend the publishDiagnostics response to send back fixits to the
client if the client supports this extension

This commit extends the 'textDocument/publishDiagnostics' notification sent from
Clangd to the client.  When it's enabled, Clangd sends out the fixits associated
with the appropriate diagnostic in the body of the 'publishDiagnostics'
notification. The client can enable this extension by setting 'clangdFixSupport'
to true in the textDocument capabilities during initialization.

Differential Revision: https://reviews.llvm.org/D50415

llvm-svn: 339454

6 years ago[InstCombine] add/update tests for selectBinOpIdentity; NFC
Sanjay Patel [Fri, 10 Aug 2018 17:20:24 +0000 (17:20 +0000)]
[InstCombine] add/update tests for selectBinOpIdentity; NFC

This includes a test that would have exposed the bug in rL339439
which was reverted at rL339446. The compare can be integer while
the binop is FP or vice-versa, so we need to use the binop type
when we ask for the identity constant.

llvm-svn: 339453

6 years agoMake changes to the check strings so that the test I modified in r339438
Akira Hatanaka [Fri, 10 Aug 2018 17:07:27 +0000 (17:07 +0000)]
Make changes to the check strings so that the test I modified in r339438
passes on 32-bit targets.

llvm-svn: 339452

6 years ago[libcxx] Mark charconv tests as failing for previous libcxx versions.
Volodymyr Sapsai [Fri, 10 Aug 2018 17:03:47 +0000 (17:03 +0000)]
[libcxx] Mark charconv tests as failing for previous libcxx versions.

<charconv> was added in r338479. Previous libcxx versions don't have
this functionality and corresponding tests should be failing.

Reviewers: mclow.lists, ldionne, EricWF

Reviewed By: ldionne

Subscribers: christof, dexonsmith, lichray, EricWF, cfe-commits

Differential Revision: https://reviews.llvm.org/D50543

llvm-svn: 339451

6 years ago[MS Demangler] Add conversion operator tests.
Zachary Turner [Fri, 10 Aug 2018 16:55:59 +0000 (16:55 +0000)]
[MS Demangler] Add conversion operator tests.

The mangled names were added in the original commit, but
the demangled equivalents weren't, so nothing was actually
being checked.

llvm-svn: 339450

6 years ago[hwasan] Remove liblog dependency.
Evgeniy Stepanov [Fri, 10 Aug 2018 16:38:57 +0000 (16:38 +0000)]
[hwasan] Remove liblog dependency.

HWASan will not run on older Android releases where we use
__android_log_write for logging.

This dependency is also harmful in the case when libc itself depends
on hwasan, because it creates a loop of
  libc -> hwasan -> liblog -> libc
which makes liblog vs libc initialization order undetermined.

Without liblog the loop is just
  libc -> hwasan -> libc
and any init order issues can be solved in hwasan.

llvm-svn: 339449

6 years ago[llvm-objcopy] NFC: consistently use typename ELFT::<X> definitions in headers
Jordan Rupprecht [Fri, 10 Aug 2018 16:25:58 +0000 (16:25 +0000)]
[llvm-objcopy] NFC: consistently use typename ELFT::<X> definitions in headers

llvm-svn: 339448

6 years ago[hwasan] Add -hwasan-with-ifunc flag.
Evgeniy Stepanov [Fri, 10 Aug 2018 16:21:37 +0000 (16:21 +0000)]
[hwasan] Add -hwasan-with-ifunc flag.

Summary: Similar to asan's flag, it can be used to disable the use of ifunc to access hwasan shadow address.

Reviewers: vitalybuka, kcc

Subscribers: srhines, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D50544

llvm-svn: 339447

6 years ago[InstCombine] revert r339439 - rearrange code for foldSelectBinOpIdentity
Sanjay Patel [Fri, 10 Aug 2018 16:12:19 +0000 (16:12 +0000)]
[InstCombine] revert r339439 - rearrange code for foldSelectBinOpIdentity

That was supposed to be NFC, but it exposed a logic hole somewhere that
caused bots to fail.

llvm-svn: 339446

6 years ago[InstCombine][NFC] Added tests for select with binop fold
David Bolvansky [Fri, 10 Aug 2018 15:29:09 +0000 (15:29 +0000)]
[InstCombine][NFC] Added tests for select with binop fold

llvm-svn: 339441

6 years agoRichManglingContext: Make m_ipd_str_len a local variable and simplify processIPDStrRe...
Stefan Granitz [Fri, 10 Aug 2018 15:21:33 +0000 (15:21 +0000)]
RichManglingContext: Make m_ipd_str_len a local variable and simplify processIPDStrResult + polishing in test and Mangled

llvm-svn: 339440

6 years ago[InstCombine] rearrange code for foldSelectBinOpIdentity; NFCI
Sanjay Patel [Fri, 10 Aug 2018 15:11:26 +0000 (15:11 +0000)]
[InstCombine] rearrange code for foldSelectBinOpIdentity; NFCI

This should make it easier to folow and to add the planned enhancements
such as D50190.

llvm-svn: 339439

6 years ago[CodeGen] Merge equivalent block copy/helper functions.
Akira Hatanaka [Fri, 10 Aug 2018 15:09:24 +0000 (15:09 +0000)]
[CodeGen] Merge equivalent block copy/helper functions.

Clang generates copy and dispose helper functions for each block literal
on the stack. Often these functions are equivalent for different blocks.
This commit makes changes to merge equivalent copy and dispose helper
functions and reduce code size.

To enable merging equivalent copy/dispose functions, the captured object
infomation is encoded into the helper function name. This allows IRGen
to check whether an equivalent helper function has already been emitted
and reuse the function instead of generating a new helper function
whenever a block is defined. In addition, the helper functions are
marked as linkonce_odr to enable merging helper functions that have the
same name across translation units and marked as unnamed_addr to enable
the linker's deduplication pass to merge functions that have different
names but the same content.

rdar://problem/42640608

Differential Revision: https://reviews.llvm.org/D50152

llvm-svn: 339438

6 years ago[clang-tidy] check_clang_tidy.py: support CHECK-NOTES prefix
Roman Lebedev [Fri, 10 Aug 2018 15:05:46 +0000 (15:05 +0000)]
[clang-tidy] check_clang_tidy.py: support CHECK-NOTES prefix

Summary:
Currently, there is two configured prefixes: `CHECK-FIXES` and `CHECK-MESSAGES`
`CHECK-MESSAGES` checks that there are no test output lines with `warning:|error:`, which are not explicitly handled in lit tests.
However there does not seem to be a nice way to enforce for all the `note:` to be checked.
This was useful for me when developing D36836.

Reviewers: alexfh, klimek, aaron.ballman, hokein

Reviewed By: alexfh, aaron.ballman

Subscribers: JonasToth, JDevlieghere, xazax.hun, cfe-commits

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D36892

llvm-svn: 339437

6 years ago[MS Demangler] Properly demangle conversion operators.
Zachary Turner [Fri, 10 Aug 2018 15:04:56 +0000 (15:04 +0000)]
[MS Demangler] Properly demangle conversion operators.

These were completely broken before.  We need to handle
the 'B' operator tag.

llvm-svn: 339436

6 years ago[MS Demangler] Disable a couple of tests.
Zachary Turner [Fri, 10 Aug 2018 14:53:33 +0000 (14:53 +0000)]
[MS Demangler] Disable a couple of tests.

The check lines are marked FIXME but not the mangled names.
This is causing an error.

llvm-svn: 339435