platform/upstream/llvm.git
5 years agoRecommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."
Florian Hahn [Thu, 28 Mar 2019 23:11:00 +0000 (23:11 +0000)]
Recommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."

Recommitting after addressing a buildbot failure.

This reverts commit c87869ebea000dd6483de7c7451cb36c1d36f866.

llvm-svn: 357222

5 years ago[llvm-readobj] Fix formatting of unknown note types
Jordan Rupprecht [Thu, 28 Mar 2019 23:08:06 +0000 (23:08 +0000)]
[llvm-readobj] Fix formatting of unknown note types

llvm-svn: 357221

5 years ago[MS] Make __iso_volatile_* available on all targets
Reid Kleckner [Thu, 28 Mar 2019 22:59:09 +0000 (22:59 +0000)]
[MS] Make __iso_volatile_* available on all targets

Future versions of MSVC make these intrinsics available on x86 & x64,
according to:
http://lists.llvm.org/pipermail/cfe-dev/2019-March/061711.html

The purpose of these builtins is to emit plain, non-atomic, volatile
stores when /volatile:ms (-cc1 -fms-volatile) is enabled.

llvm-svn: 357220

5 years ago[yaml2obj] Fixing opening empty yaml files.
Puyan Lotfi [Thu, 28 Mar 2019 22:55:08 +0000 (22:55 +0000)]
[yaml2obj] Fixing opening empty yaml files.

Essentially echo "" | yaml2obj crashes. This patch attempts to trim whitespace
and determine if the yaml string in the file is empty or not. If the input is
empty then it will not properly print out an error message and return an error
code.

Differential Revision: https://reviews.llvm.org/D59964

A    test/tools/yaml2obj/empty.yaml
M    tools/yaml2obj/yaml2obj.cpp

llvm-svn: 357219

5 years agoUpdate lit config for ld.lld command to match "ld\.lld" instead of trying to match...
Rumeet Dhindsa [Thu, 28 Mar 2019 22:26:51 +0000 (22:26 +0000)]
Update lit config for ld.lld command to match "ld\.lld" instead of trying to match respective regex. (It was able to work with ld-lld and ld1lld as well)

Differential Revision: https://reviews.llvm.org/D59962

llvm-svn: 357218

5 years ago[LSR] Fix signed overflow in GenerateCrossUseConstantOffsets.
Florian Hahn [Thu, 28 Mar 2019 22:17:29 +0000 (22:17 +0000)]
[LSR] Fix signed overflow in GenerateCrossUseConstantOffsets.

For the attached test case, unchecked addition of immediate starts and
ends overflows, as they can be arbitrary i64 constants.

Proof: https://rise4fun.com/Alive/Plqc

Reviewers: qcolombet, gilr, efriedma

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D59218

llvm-svn: 357217

5 years agoFixed the lld test using ld-lld command to use ld.lld instead.
Rumeet Dhindsa [Thu, 28 Mar 2019 22:14:46 +0000 (22:14 +0000)]
Fixed the lld test using ld-lld command to use ld.lld instead.

Differential Revision: https://reviews.llvm.org/D59962

llvm-svn: 357216

5 years ago[BPF] add proper multi-dimensional array support
Yonghong Song [Thu, 28 Mar 2019 21:59:49 +0000 (21:59 +0000)]
[BPF] add proper multi-dimensional array support

For multi-dimensional array like below
  int a[2][3];
the previous implementation generates BTF_KIND_ARRAY type
like below:
  . element_type: int
  . index_type: unsigned int
  . number of elements: 6

This is not the best way to represent arrays, esp.,
when converting BTF back to headers and users will see
  int a[6];
instead.

This patch generates proper support for multi-dimensional arrays.
For "int a[2][3]", the two BTF_KIND_ARRAY types will be
generated:
  Type #n:
    . element_type: int
    . index_type: unsigned int
    . number of elements: 3
  Type #(n+1):
    . element_type: #n
    . index_type: unsigned int
    . number of elements: 2

The linux kernel already supports such a multi-dimensional
array representation properly.

Signed-off-by: Yonghong Song <yhs@fb.com>
Differential Revision: https://reviews.llvm.org/D59943

llvm-svn: 357215

5 years ago[MC] Fix floating-point literal lexing.
Eli Friedman [Thu, 28 Mar 2019 21:12:28 +0000 (21:12 +0000)]
[MC] Fix floating-point literal lexing.

This patch has three related fixes to improve float literal lexing:

1. Make AsmLexer::LexDigit handle floats without a decimal point more
   consistently.
2. Make AsmLexer::LexFloatLiteral print an error for floats which are
   apparently missing an "e".
3. Make APFloat::convertFromString use binutils-compatible exponent
   parsing.

Together, this fixes some cases where a float would be incorrectly
rejected, fixes some cases where the compiler would crash, and improves
diagnostics in some cases.

Patch by Brandon Jones.

Differential Revision: https://reviews.llvm.org/D57321

llvm-svn: 357214

5 years ago[SelectionDAGBuilder] Fix 80 column violation. NFC
Craig Topper [Thu, 28 Mar 2019 20:52:22 +0000 (20:52 +0000)]
[SelectionDAGBuilder] Fix 80 column violation. NFC

llvm-svn: 357213

5 years ago[InterleavedAccessPass] Don't increase the number of bytes loaded.
Eli Friedman [Thu, 28 Mar 2019 20:44:50 +0000 (20:44 +0000)]
[InterleavedAccessPass] Don't increase the number of bytes loaded.

Even if the interleaving transform would otherwise be legal, we shouldn't
introduce an interleaved load that is wider than the original load: it might
have undefined behavior.

It might be possible to perform some sort of mask-narrowing transform in
some cases (using a narrower interleaved load, then extending the
results using shufflevectors).  But I haven't tried to implement that,
at least for now.

Fixes https://bugs.llvm.org/show_bug.cgi?id=41245 .

Differential Revision: https://reviews.llvm.org/D59954

llvm-svn: 357212

5 years agoRevert [DSE] Preserve basic block ordering using OrderedBasicBlock.
Florian Hahn [Thu, 28 Mar 2019 20:36:24 +0000 (20:36 +0000)]
Revert [DSE] Preserve basic block ordering using OrderedBasicBlock.

This reverts r357208 (git commit c0bfd37d385c93711ef3a349599dba20e6b101ef)

This causes a buildbot failure:  http://lab.llvm.org:8011/builders/clang-with-thin-lto-ubuntu/builds/16124

FAILED: lib/IR/CMakeFiles/LLVMCore.dir/IRBuilder.cpp.o
/home/buildslave/ps4-buildslave1/clang-with-thin-lto-ubuntu/install/stage2/bin/clang++   -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/IR -I/home/buildslave/ps4-buildslave1/clang-with-thin-lto-ubuntu/llvm.src/lib/IR -Iinclude -I/home/buildslave/ps4-buildslave1/clang-with-thin-lto-ubuntu/llvm.src/include -fPIC -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections -flto=thin -O3    -UNDEBUG  -fno-exceptions -fno-rtti -MD -MT lib/IR/CMakeFiles/LLVMCore.dir/IRBuilder.cpp.o -MF lib/IR/CMakeFiles/LLVMCore.dir/IRBuilder.cpp.o.d -o lib/IR/CMakeFiles/LLVMCore.dir/IRBuilder.cpp.o -c /home/buildslave/ps4-buildslave1/clang-with-thin-lto-ubuntu/llvm.src/lib/IR/IRBuilder.cpp
clang-9: /home/buildslave/ps4-buildslave1/clang-with-thin-lto-ubuntu/llvm.src/lib/Analysis/OrderedBasicBlock.cpp:38: bool llvm::OrderedBasicBlock::comesBefore(const llvm::Instruction *, const llvm::Instruction *): Assertion `!(LastInstFound == BB->end() && NextInstPos != 0) && "Instruction supposed to be in NumberedInsts"' failed.

llvm-svn: 357211

5 years agoFix for regression test, since we rely on the formatter for std::vector in the test...
Shafik Yaghmour [Thu, 28 Mar 2019 20:25:57 +0000 (20:25 +0000)]
Fix for regression test, since we rely on the formatter for std::vector in the test we need a libc++ category.

See differential https://reviews.llvm.org/D59847 for initial change that this fixes

llvm-svn: 357210

5 years agoApply include-what-you-use #include removal suggestions. NFC.
Michael Kruse [Thu, 28 Mar 2019 20:19:49 +0000 (20:19 +0000)]
Apply include-what-you-use #include removal suggestions. NFC.

This removes unused includes (and forward declarations) as
suggested by include-what-you-use. If a transitive include of a removed
include is required to compile a file, I added the required header (or
forward declaration if suggested by include-what-you-use).

This should reduce compilation time and reduce the number of iterative
recompilations when a header was changed.

llvm-svn: 357209

5 years ago[DSE] Preserve basic block ordering using OrderedBasicBlock.
Florian Hahn [Thu, 28 Mar 2019 20:02:33 +0000 (20:02 +0000)]
[DSE] Preserve basic block ordering using OrderedBasicBlock.

By extending OrderedBB to allow removing and replacing cached
instructions, we can preserve OrderedBBs in DSE easily. This eliminates
one source of quadratic compile time in DSE.

Fixes PR38829.

Reviewers: rnk, efriedma, hfinkel

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D59789

llvm-svn: 357208

5 years agoFix the swig typemap for "uint32_t *versions, uint32_t num_versions".
Jim Ingham [Thu, 28 Mar 2019 19:25:54 +0000 (19:25 +0000)]
Fix the swig typemap for "uint32_t *versions, uint32_t num_versions".

It was making a list of a certain size but not always filling in that
many elements, which would lead to a crash iterating over the list.

Differential Revision: https://reviews.llvm.org/D59913

llvm-svn: 357207

5 years ago[MemDepAnalysis] Allow caller to pass in an OrderedBasicBlock.
Florian Hahn [Thu, 28 Mar 2019 19:17:31 +0000 (19:17 +0000)]
[MemDepAnalysis] Allow caller to pass in an OrderedBasicBlock.

If the caller can preserve the OBB, we can avoid recomputing the order
for each getDependency call.

Reviewers: efriedma, rnk, hfinkel

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D59788

llvm-svn: 357206

5 years ago[OPENMP]Add check for undefined behavior with thread allocators on
Alexey Bataev [Thu, 28 Mar 2019 19:15:36 +0000 (19:15 +0000)]
[OPENMP]Add check for undefined behavior with thread allocators on
target and task-based directives.

According to OpenMP 5.0, 2.11.4 allocate Clause, Restrictions, For task,
taskloop or target directives, allocation requests to memory allocators
with the trait access set to thread result in unspecified behavior.
Patch introduces a check for omp_thread_mem_alloc predefined allocator
on target- and trask-based directives.

llvm-svn: 357205

5 years ago[SLP][X86] Add tests showing failure to commute icmp/fcmp by swapping predicate
Simon Pilgrim [Thu, 28 Mar 2019 19:13:38 +0000 (19:13 +0000)]
[SLP][X86] Add tests showing failure to commute icmp/fcmp by swapping predicate

By swapping icmp/fcmp predicates we can commute their operands to improve vectorization

llvm-svn: 357204

5 years ago[pstl] Uglify internal names of the library
Louis Dionne [Thu, 28 Mar 2019 19:10:32 +0000 (19:10 +0000)]
[pstl] Uglify internal names of the library

llvm-svn: 357203

5 years ago[SLP][X86] Add tests showing failure to commute icmp/fcmp operands
Simon Pilgrim [Thu, 28 Mar 2019 19:03:53 +0000 (19:03 +0000)]
[SLP][X86] Add tests showing failure to commute icmp/fcmp operands

Some predicates are fully commutative - we should be able to easily commute their operands to improve vectorization

llvm-svn: 357202

5 years agoTemporarily revert "SafepointIRVerifier port to new Pass Manager"
Adrian Prantl [Thu, 28 Mar 2019 18:34:34 +0000 (18:34 +0000)]
Temporarily revert "SafepointIRVerifier port to new Pass Manager"
to unbreak the modular bots and its follow-up commit.

This reverts commit https://reviews.llvm.org/D59825
because it introduced a

fatal error: cyclic dependency in module 'LLVM_intrinsic_gen': LLVM_intrinsic_gen -> LLVM_IR -> LLVM_intrinsic_gen

llvm-svn: 357201

5 years ago[COFF] Optimize range extension thunk insertion memory usage
Reid Kleckner [Thu, 28 Mar 2019 18:30:03 +0000 (18:30 +0000)]
[COFF] Optimize range extension thunk insertion memory usage

Summary:
This avoids allocating O(#relocs) of intermediate data for each section
when range extension thunks aren't needed for that section. This also
removes a std::vector from SectionChunk, which further reduces its size.

Instead, this change adds the range extension thunk symbols to the
object files that contain sections that need extension thunks. By adding
them to the symbol table of the parent object, that means they now have
a symbol table index. Then we can then modify the original relocation,
after copying it to read-write memory, to use the new symbol table
index.

This makes linking browser_tests.exe with no PDB 10.46% faster, moving
it from 11.364s to 10.288s averaged over five runs.

Reviewers: mstorsjo, ruiu

Subscribers: aganea, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59902

llvm-svn: 357200

5 years ago[llvm-objcopy][NFC] Move ELF-specific logic into /ELF/ directory
Jordan Rupprecht [Thu, 28 Mar 2019 18:27:00 +0000 (18:27 +0000)]
[llvm-objcopy][NFC] Move ELF-specific logic into /ELF/ directory

llvm-svn: 357199

5 years ago[NFC] find_first_of/find_last_of -> find/rfind for single char.
Jonas Devlieghere [Thu, 28 Mar 2019 18:10:14 +0000 (18:10 +0000)]
[NFC] find_first_of/find_last_of -> find/rfind for single char.

For a single char argument, find_first_of is equal to find and
find_last_of is equal to rfind. While playing around with the plugin
stuff this caused an export failure because it always got inlined except
once, which resulted in an undefined symbol.

llvm-svn: 357198

5 years ago[Driver] Default Android toolchains to noexecstack.
Dan Albert [Thu, 28 Mar 2019 18:08:28 +0000 (18:08 +0000)]
[Driver] Default Android toolchains to noexecstack.

Android does not support executable stacks.

Reviewers: srhines, pirama

Reviewed By: pirama

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D53343

llvm-svn: 357197

5 years ago[X86] Teach the isel optimization for (x << C1) op C2 to (x op (C2>>C1)) << C1 to...
Craig Topper [Thu, 28 Mar 2019 18:05:37 +0000 (18:05 +0000)]
[X86] Teach the isel optimization for (x << C1) op C2 to (x op (C2>>C1)) << C1 to consider cases where C2>>C1 can fit an unsigned 32-bit immediate

For 64-bit operations we should consider if the immediate can be made to fit
in an unsigned 32-bits immedate. For OR/XOR this allows us to load the immediate
with MOV32ri instead of movabsq. For AND this allows us to fold the immediate.

Differential Revision: https://reviews.llvm.org/D59867

llvm-svn: 357196

5 years ago[WebAssembly] Reland of rL356953 (4dcf3acce6)
Sam Clegg [Thu, 28 Mar 2019 17:45:18 +0000 (17:45 +0000)]
[WebAssembly] Reland of rL356953 (4dcf3acce6)

The previous patch was missing GetProgramPath() in the return value
of getLinkerPath().

See https://reviews.llvm.org/D59743

llvm-svn: 357195

5 years agoCreate an instance of Target after reading all input files. NFC.
Rui Ueyama [Thu, 28 Mar 2019 17:38:53 +0000 (17:38 +0000)]
Create an instance of Target after reading all input files. NFC.

This change itself doesn't mean anything, but it helps D59780 because
in patch, we don't know whether we need to create a CET-aware PLT or
not until we read all input files.

llvm-svn: 357194

5 years agoMake a member function a non-member function.
Rui Ueyama [Thu, 28 Mar 2019 17:35:00 +0000 (17:35 +0000)]
Make a member function a non-member function.

Since this member function doesn't use anything in the class,
it doesn't have to be a member of the class.

llvm-svn: 357193

5 years agoDelay initialization of three static global maps, NFC
Reid Kleckner [Thu, 28 Mar 2019 17:33:41 +0000 (17:33 +0000)]
Delay initialization of three static global maps, NFC

This avoids allocating a few KB of heap memory on startup, and instead
allocates these maps lazily. I noticed this while profiling LLD.

llvm-svn: 357192

5 years agoDe-template X86_64TargetInfo. NFC.
Rui Ueyama [Thu, 28 Mar 2019 17:31:12 +0000 (17:31 +0000)]
De-template X86_64TargetInfo. NFC.

llvm-svn: 357191

5 years agoFix PR#35967: '<regex> syntax_option_type is not a proper bitmask' Sadly, this is...
Marshall Clow [Thu, 28 Mar 2019 17:30:23 +0000 (17:30 +0000)]
Fix PR#35967: '<regex> syntax_option_type is not a proper bitmask' Sadly, this is an ABI break, so it's only available if you define either '_LIBCPP_ABI_VERSION > 2' or '_LIBCPP_ABI_UNSTABLE' or '_LIBCPP_ABI_REGEX_CONSTANTS_NONZERO' and rebuild your dylib.

llvm-svn: 357190

5 years ago[pstl] Introduce forward declarations
Louis Dionne [Thu, 28 Mar 2019 17:22:19 +0000 (17:22 +0000)]
[pstl] Introduce forward declarations

Necessary when pstl is included from with <algorithm> and <numeric> to
prevent a partially declared standard library when pstl itself uses
algorithms from <algorithm> and <numeric>.

Also, this patch makes sure that configuration comes via standard headers.
Directly including pstl_config.h in implementation files is incompatible
with inclusion of pstl into a standard library implementation which
provides it's own library wide configuration and may configure the
library differently to the pstl_config.h used by the standalone
implementation.

Differential Revision: https://reviews.llvm.org/D59122

llvm-svn: 357189

5 years agoRegression test to ensure that we handling importing of std::vector of enums correctly
Shafik Yaghmour [Thu, 28 Mar 2019 17:22:13 +0000 (17:22 +0000)]
Regression test to ensure that we handling importing of std::vector of enums correctly

Summary:
https://reviews.llvm.org/D59845 added a fix for the IsStructuralMatch(...) specialization for EnumDecl this test should pass once this fix is committed.

Differential Revision: https://reviews.llvm.org/D59847

llvm-svn: 357188

5 years agoMake helper functions static. NFC.
Benjamin Kramer [Thu, 28 Mar 2019 17:18:42 +0000 (17:18 +0000)]
Make helper functions static. NFC.

llvm-svn: 357187

5 years agoDisable warnings when indexing as a standalone action.
Sam McCall [Thu, 28 Mar 2019 17:07:28 +0000 (17:07 +0000)]
Disable warnings when indexing as a standalone action.

Summary:
- we don't record the warnings at all
- we don't want to stop indexing if we hit error-limit due to warnings
- this allows some analyses to be skipped which can save some CPU

https://github.com/clangd/clangd/issues/24

Reviewers: hokein

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59935

llvm-svn: 357186

5 years agoMake TargetInfo const. NFC.
Rui Ueyama [Thu, 28 Mar 2019 17:05:09 +0000 (17:05 +0000)]
Make TargetInfo const. NFC.

We do not mutate a TargetInfo instance after creating it. This change
makes it explicit.

llvm-svn: 357185

5 years ago[CodeGen] Add additional mangling for struct members of non trivial structs
Shoaib Meenai [Thu, 28 Mar 2019 17:01:20 +0000 (17:01 +0000)]
[CodeGen] Add additional mangling for struct members of non trivial structs

In https://bugs.llvm.org/show_bug.cgi?id=41206 we observe bad codegen
when embedding a non-trivial C struct within a C struct. This is due to
the fact that name mangling for non-trivial structs marks the two
structs as identical. This diff contains a fix for this issue.

Patch by Dan Zimmerman <daniel.zimmerman@me.com>.

Differential Revision: https://reviews.llvm.org/D59873

llvm-svn: 357184

5 years ago[MIPS GlobalISel] Select float constants
Petar Avramovic [Thu, 28 Mar 2019 16:58:12 +0000 (16:58 +0000)]
[MIPS GlobalISel] Select float constants

Select 32 and 64 bit float constants for MIPS32.

Differential Revision: https://reviews.llvm.org/D59933

llvm-svn: 357183

5 years agogn build: Add some build files for clangd
Nico Weber [Thu, 28 Mar 2019 16:53:32 +0000 (16:53 +0000)]
gn build: Add some build files for clangd

Enough to build the clangd binaries, but this is still missing build
files for:
- fuzzer
- indexer
- index/dex/dexp
- benchmarks
- xpc

Differential Revision: https://reviews.llvm.org/D59899

llvm-svn: 357182

5 years ago[libc++] Remove unnecessary <iostream> #includes in tests
Louis Dionne [Thu, 28 Mar 2019 16:38:15 +0000 (16:38 +0000)]
[libc++] Remove unnecessary <iostream> #includes in tests

Some tests #include <iostream> but they don't use anything from the
header. Those are probably artifacts of when the tests were developped.

llvm-svn: 357181

5 years agoAdd "git llvm revert" and "git llvm svn-lookup" subcommands
Jordan Rupprecht [Thu, 28 Mar 2019 16:15:28 +0000 (16:15 +0000)]
Add "git llvm revert" and "git llvm svn-lookup" subcommands

Summary:
The current git-svnrevert script only works with git-svn repos (e.g. using "git svn find-rev" to find the commit to revert). This adds a similar implementation that works with the llvm git command handler.

Usage:
```
// Revert by svn id
$ git llvm revert r123456
// See what commands would be run instead of actually reverting
$ git llvm revert -n r123456
<full git revert + git commit commands>
// Git commit hash also fine
$ git llvm revert abc123456
// For convenience, the git->svn method can be used directly:
$ git llvm svn-lookup abc123456
r123456
// Push revert upstream (drop the -n when ready)
$ git llvm push -n
```

Regardless of how the command is invoked (with a svn revision or git hash), the message is:

```
Revert [LibFoo] Change Foo implementation

This reverts r123456 (git commit abc123)
```

Reviewers: jyknight, mehdi_amini, jlebar

Reviewed By: jlebar

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59837

llvm-svn: 357180

5 years ago[DAG] Fix Lifetime Node ID hashing.
Nirav Dave [Thu, 28 Mar 2019 15:53:01 +0000 (15:53 +0000)]
[DAG] Fix Lifetime Node ID hashing.

llvm-svn: 357179

5 years ago[DAGCombiner] fold sext into negation
Sanjay Patel [Thu, 28 Mar 2019 15:46:02 +0000 (15:46 +0000)]
[DAGCombiner] fold sext into negation

As noted in D59818:
  %z = zext i8 %x to i32
  %neg = sub i32 0, %z
  %r = sext i32 %neg to i64
  =>
  %z2 = zext i8 %x to i64
  %r = sub i64 0, %z2

https://rise4fun.com/Alive/KzSR

llvm-svn: 357178

5 years ago[x86] add vector test for sext of negate; NFC
Sanjay Patel [Thu, 28 Mar 2019 15:30:09 +0000 (15:30 +0000)]
[x86] add vector test for sext of negate; NFC

llvm-svn: 357177

5 years ago[AMDGPU] Clarify Code Object V2/V3 differences in AMDGPUUsage
Scott Linder [Thu, 28 Mar 2019 15:08:52 +0000 (15:08 +0000)]
[AMDGPU] Clarify Code Object V2/V3 differences in AMDGPUUsage

Ensure Code Object V2 documentation is complete, but always contains a
warning and a link to the equivalent Code Object V3 documentation.

Explicitly indicate that any note records present in a code object that
are not documented must be considered deprecated and ignored.

Differential Revision: https://reviews.llvm.org/D59782

llvm-svn: 357176

5 years ago[clangd] Update error message to fix tests after r357173
Sam McCall [Thu, 28 Mar 2019 15:07:15 +0000 (15:07 +0000)]
[clangd] Update error message to fix tests after r357173

llvm-svn: 357175

5 years ago[Documentation] Proposal to change variable names
Michael Platings [Thu, 28 Mar 2019 14:42:21 +0000 (14:42 +0000)]
[Documentation] Proposal to change variable names

Differential Revision: https://reviews.llvm.org/D59251

llvm-svn: 357174

5 years ago[clangd] Support UTF-32 (i.e. codepoint) offsets.
Sam McCall [Thu, 28 Mar 2019 14:37:51 +0000 (14:37 +0000)]
[clangd] Support UTF-32 (i.e. codepoint) offsets.

Summary:
(Changes to UTF-8/UTF-16 here are NFC, moving things around to make the
cases more symmetrical)

Reviewers: ilya-biryukov

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59927

llvm-svn: 357173

5 years ago[x86] avoid cmov in movmsk reduction
Sanjay Patel [Thu, 28 Mar 2019 14:16:13 +0000 (14:16 +0000)]
[x86] avoid cmov in movmsk reduction

This is probably the least important of our movmsk problems, but I'm starting
at the bottom to reduce distractions.

We were creating a select_cc which bypasses the select and bitmask codegen
optimizations that we have now. If we produce a compare+negate instead, we
allow things like neg/sbb carry bit hacks, and in all cases we avoid a cmov.
There's no partial register update danger in these sequences because we always
produce the zero-register xor ahead of the 'set' if needed.

There seems to be a missing fold for sext of a bool bit here:

negl %ecx
movslq %ecx, %rax

...but that's an independent transform.

Differential Revision: https://reviews.llvm.org/D59818

llvm-svn: 357172

5 years ago[X86MacroFusion] Handle branch fusion (AMD CPUs).
Clement Courbet [Thu, 28 Mar 2019 14:12:46 +0000 (14:12 +0000)]
[X86MacroFusion] Handle branch fusion (AMD CPUs).

Summary:
This adds a BranchFusion feature to replace the usage of the MacroFusion
for AMD CPUs.

See D59688 for context.

Reviewers: andreadb, lebedev.ri

Subscribers: hiraditya, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59872

llvm-svn: 357171

5 years agoAMDGPU: Make exec mask optimzations more resistant to block splits
Matt Arsenault [Thu, 28 Mar 2019 14:01:39 +0000 (14:01 +0000)]
AMDGPU: Make exec mask optimzations more resistant to block splits

Also improve the check for SALU instructions to also ignore
implicit_def and other fake instructions.

llvm-svn: 357170

5 years ago[X86] AMD Piledriver (BdVer2): fine-tune some latencies
Roman Lebedev [Thu, 28 Mar 2019 13:40:34 +0000 (13:40 +0000)]
[X86] AMD Piledriver (BdVer2): fine-tune some latencies

Based on llvm-exegesis measurements.

Now that llvm-exegesis is ~2 magnitudes faster, and is a bit smarter,
it is now possible to continue cleanup of the scheduler model.

With this, there are no more latency inconsistencies for the
opcodes that produce stable measurements, and only a few inconsistencies
for unstable measurements (MMX_* opcodes, opcodes that llvm-exegesis
measures by chaining - CMP, TEST, BT, SETcc, CVT, MOV, etc.)

llvm-svn: 357169

5 years ago[NFC] Format InlineFeatureIgnoreList.
Clement Courbet [Thu, 28 Mar 2019 13:38:58 +0000 (13:38 +0000)]
[NFC] Format InlineFeatureIgnoreList.

To avoid more spurious clang-format changes when adding features (D59872).

llvm-svn: 357168

5 years ago[Analyzer] Constraint Manager - Calculate Effective Range for Differences
Adam Balogh [Thu, 28 Mar 2019 13:05:59 +0000 (13:05 +0000)]
[Analyzer] Constraint Manager - Calculate Effective Range for Differences

Since rL335814, if the constraint manager cannot find a range set for `A - B`
(where `A` and `B` are symbols) it looks for a range for `B - A` and returns
it negated if it exists. However, if a range set for both `A - B` and `B - A`
is stored then it only returns the first one. If we both use `A - B` and
`B - A`, these expressions behave as two totally unrelated symbols. This way
we miss some useful deductions which may lead to false negatives or false
positives.

This tiny patch changes this behavior: if the symbolic expression the
constraint manager is looking for is a difference `A - B`, it tries to
retrieve the range for both `A - B` and `B - A` and if both exists it returns
the intersection of range `A - B` and the negated range of `B - A`. This way
every time a checker applies new constraints to the symbolic difference or to
its negated it always affects both the original difference and its negated.

Differential Revision: https://reviews.llvm.org/D55007

llvm-svn: 357167

5 years ago- Addressed comments
Xing GUO [Thu, 28 Mar 2019 12:51:56 +0000 (12:51 +0000)]
- Addressed comments

llvm-svn: 357166

5 years ago- Addressed @jhenderson 's comments
Xing GUO [Thu, 28 Mar 2019 12:51:46 +0000 (12:51 +0000)]
- Addressed @jhenderson 's comments
- Format patch

llvm-svn: 357165

5 years ago[llvm-readobj] Add new helper function `getSymbolVersionByIndex()`
Xing GUO [Thu, 28 Mar 2019 12:51:35 +0000 (12:51 +0000)]
[llvm-readobj] Add new helper function `getSymbolVersionByIndex()`

Summary: When implementing `GNU style` dumper for `.gnu.version` section, we should find symbol version name by `vs_index`.

Reviewers: jhenderson, rupprecht

Reviewed By: rupprecht

Subscribers: arphaman, rupprecht, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59545

llvm-svn: 357164

5 years agoFix Wdocumentation warning. NFCI.
Simon Pilgrim [Thu, 28 Mar 2019 12:03:49 +0000 (12:03 +0000)]
Fix Wdocumentation warning. NFCI.

llvm-svn: 357163

5 years ago[PR41247] Fixed parsing of private keyword in C++.
Anastasia Stulova [Thu, 28 Mar 2019 11:47:14 +0000 (11:47 +0000)]
[PR41247] Fixed parsing of private keyword in C++.

Fixed bug in C++ to prevent parsing 'private' as a
valid address space qualifier.

Differential Revision: https://reviews.llvm.org/D59874

llvm-svn: 357162

5 years ago[DAGCombiner] Fold truncate(build_vector(x,y)) -> build_vector(truncate(x),truncate(y))
Simon Pilgrim [Thu, 28 Mar 2019 11:34:21 +0000 (11:34 +0000)]
[DAGCombiner] Fold truncate(build_vector(x,y)) -> build_vector(truncate(x),truncate(y))

If scalar truncates are free, attempt to pre-truncate build_vectors source operands.

Only attempt to do this before legalization as we often end up with truncations/extensions during build_vector lowering.

Differential Revision: https://reviews.llvm.org/D59654

llvm-svn: 357161

5 years ago[ELF][ARM] Recommit Redesign of .ARM.exidx handling to use a SyntheticSection
Peter Smith [Thu, 28 Mar 2019 11:10:20 +0000 (11:10 +0000)]
[ELF][ARM] Recommit Redesign of .ARM.exidx handling to use a SyntheticSection

Recommit r356666 with fixes for buildbot failure, as well as handling for
--emit-relocs, which we decide not to emit any relocation sections as the
table is already position independent and an offline tool can deduce the
relocations.

Instead of creating extra Synthetic .ARM.exidx sections to account for
gaps in the table, create a single .ARM.exidx SyntheticSection that can
derive the contents of the gaps from a sorted list of the executable
InputSections. This has the benefit of moving the ARM specific code for
SyntheticSections in SHF_LINK_ORDER processing and the table merging code
into the ARM specific SyntheticSection. This also makes it easier to create
EXIDX_CANTUNWIND table entries for executable InputSections that don't
have an associated .ARM.exidx section.

Fixes pr40277

Differential Revision: https://reviews.llvm.org/D59216

llvm-svn: 357160

5 years ago[ARM GlobalISel] Run regbankselect test for Thumb. NFCI
Diana Picus [Thu, 28 Mar 2019 10:57:29 +0000 (10:57 +0000)]
[ARM GlobalISel] Run regbankselect test for Thumb. NFCI

This should just work, since ARM mode and Thumb2 mode are at the same
level of support now and should map the same to GPR and FPR.

llvm-svn: 357159

5 years ago[yaml2obj][obj2yaml] - Teach yaml2obj/obj2yaml tools about STB_GNU_UNIQUE symbols.
George Rimar [Thu, 28 Mar 2019 10:52:14 +0000 (10:52 +0000)]
[yaml2obj][obj2yaml] - Teach yaml2obj/obj2yaml tools about STB_GNU_UNIQUE symbols.

yaml2obj/obj2yaml does not support the symbols with STB_GNU_UNIQUE yet.
Currently, obj2yaml fails with llvm_unreachable when met such a symbol.

I faced it when investigated the https://bugs.llvm.org/show_bug.cgi?id=41196.

Differential revision: https://reviews.llvm.org/D59875

llvm-svn: 357158

5 years ago[asan] Add options -asan-detect-invalid-pointer-cmp and -asan-detect-invalid-pointer...
Pierre Gousseau [Thu, 28 Mar 2019 10:51:24 +0000 (10:51 +0000)]
[asan] Add options -asan-detect-invalid-pointer-cmp and -asan-detect-invalid-pointer-sub options.

This is in preparation to a driver patch to add gcc 8's -fsanitize=pointer-compare and -fsanitize=pointer-subtract.
Disabled by default as this is still an experimental feature.

Reviewed By: morehouse, vitalybuka

Differential Revision: https://reviews.llvm.org/D59220

llvm-svn: 357157

5 years ago[VPlan] Determine Vector Width programmatically.
Florian Hahn [Thu, 28 Mar 2019 10:37:12 +0000 (10:37 +0000)]
[VPlan] Determine Vector Width programmatically.

With this change, the VPlan native path is triggered with the directive:

   #pragma clang loop vectorize(enable)

There is no need to specify the vectorize_width(N) clause.

Patch by Francesco Petrogalli <francesco.petrogalli@arm.com>

Differential Revision: https://reviews.llvm.org/D57598

llvm-svn: 357156

5 years ago[X85][AVX] Add missing vXi16 broadcast fold patterns
Simon Pilgrim [Thu, 28 Mar 2019 10:25:13 +0000 (10:25 +0000)]
[X85][AVX] Add missing vXi16 broadcast fold patterns

Now that D59484 has landed its easier to add these.

Added missing AVX512BW v32i16 equivalents while I was at it.

llvm-svn: 357155

5 years ago[ARM GlobalISel] Fix G_STORE with s1
Diana Picus [Thu, 28 Mar 2019 09:09:36 +0000 (09:09 +0000)]
[ARM GlobalISel] Fix G_STORE with s1

G_STORE for 1-bit values uses a STRBi12, which stores the whole byte.
Zero out the undefined bits before writing.

llvm-svn: 357154

5 years ago[ARM GlobalISel] Fix selection of G_SELECT
Diana Picus [Thu, 28 Mar 2019 09:09:27 +0000 (09:09 +0000)]
[ARM GlobalISel] Fix selection of G_SELECT

G_SELECT uses a 1-bit scalar for the condition, and is currently
implemented with a plain CMPri against 0. This means that values such as
0x1110 are interpreted as true, when instead the higher bits should be
treated as undefined and therefore ignored. Replace the CMPri with a
TSTri against 0x1, which performs an implicit AND, yielding the expected
result.

llvm-svn: 357153

5 years ago[llvm-exegesis] Introduce a 'naive' clustering algorithm (PR40880)
Roman Lebedev [Thu, 28 Mar 2019 08:55:01 +0000 (08:55 +0000)]
[llvm-exegesis] Introduce a 'naive' clustering algorithm (PR40880)

Summary:
This is an alternative to D59539.

Let's suppose we have measured 4 different opcodes, and got: `0.5`, `1.0`, `1.5`, `2.0`.
Let's suppose we are using `-analysis-clustering-epsilon=0.5`.
By default now we will start processing the `0.5` point, find that `1.0` is it's neighbor, add them to a new cluster.
Then we will notice that `1.5` is a neighbor of `1.0` and add it to that same cluster.
Then we will notice that `2.0` is a neighbor of `1.5` and add it to that same cluster.
So all these points ended up in the same cluster.
This may or may not be a correct implementation of dbscan clustering algorithm.

But this is rather horribly broken for the reasons of comparing the clusters with the LLVM sched data.
Let's suppose all those opcodes are currently in the same sched cluster.
If i specify `-analysis-inconsistency-epsilon=0.5`, then no matter
the LLVM values this cluster will **never** match the LLVM values,
and thus this cluster will **always** be displayed as inconsistent.

The solution is obviously to split off some of these opcodes into different sched cluster.
But how do i do that? Out of 4 opcodes displayed in the inconsistency report,
which ones are the "bad ones"? Which ones are the most different from the checked-in data?
I'd need to go in to the `.yaml` and look it up manually.

The trivial solution is to, when creating clusters, don't use the full dbscan algorithm,
but instead "pick some unclustered point, pick all unclustered points that are it's neighbor,
put them all into a new cluster, repeat". And just so as it happens, we can arrive
at that algorithm by not performing the "add neighbors of a neighbor to the cluster" step.

But that won't work well once we teach analyze mode to operate in on-1D mode
(i.e. on more than a single measurement type at a time), because the clustering would
depend on the order of the measurements.

Instead, let's just create a single cluster per opcode, and put all the points of that opcode into said cluster.
And simultaneously check that every point in that cluster is a neighbor of every other point in the cluster,
and if they are not, the cluster (==opcode) is unstable.

This is //yet another// step to bring me closer to being able to continue cleanup of bdver2 sched model..

Fixes [[ https://bugs.llvm.org/show_bug.cgi?id=40880 | PR40880 ]].

Reviewers: courbet, gchatelet

Reviewed By: courbet

Subscribers: tschuett, jdoerfert, RKSimon, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59820

llvm-svn: 357152

5 years agoFix tests after rC357150
Fangrui Song [Thu, 28 Mar 2019 08:41:17 +0000 (08:41 +0000)]
Fix tests after rC357150

llvm-svn: 357151

5 years ago[Driver] Allow -gsplit-dwarf on ELF OSes other than Linux and Fuchsia
Fangrui Song [Thu, 28 Mar 2019 08:24:00 +0000 (08:24 +0000)]
[Driver] Allow -gsplit-dwarf on ELF OSes other than Linux and Fuchsia

In gcc, -gsplit-dwarf is handled in gcc/gcc.c as a spec
(ASM_FINAL_SPEC): objcopy --extract-dwo + objcopy --strip-dwo. In
gcc/opts.c, -gsplit_dwarf has the same semantic of a -g. Except for the
availability of the external command 'objcopy', nothing precludes the
feature working on other ELF OSes. llvm doesn't use objcopy, so it doesn't
have to exclude other OSes.

llvm-svn: 357150

5 years ago[SelectionDAG] Add 2 tests for selection across basic blocks
Piotr Sobczak [Thu, 28 Mar 2019 07:06:26 +0000 (07:06 +0000)]
[SelectionDAG] Add 2 tests for selection across basic blocks

Summary:
Add tests for selection across basic block boundary:
 * one test containing a buffer load, where part of the offset
   computation is placed in the predecessor of the load
 * similar test, but containing two buffer loads and shared
   computations

Please note that the behaviour being tested will be updated in
a subsequent commit.

This commit was extracted from https://reviews.llvm.org/D59535.

Reviewers: RKSimon

Reviewed By: RKSimon

Subscribers: jvesely, nhaehnle, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59690

llvm-svn: 357149

5 years agoSafepointIRVerifier port to new Pass Manager
Serguei Katkov [Thu, 28 Mar 2019 07:02:00 +0000 (07:02 +0000)]
SafepointIRVerifier port to new Pass Manager

Add missed include.

llvm-svn: 357148

5 years agoSafepointIRVerifier port to new Pass Manager
Serguei Katkov [Thu, 28 Mar 2019 06:00:09 +0000 (06:00 +0000)]
SafepointIRVerifier port to new Pass Manager

Straightforward port of StatepointIRVerifier pass to new Pass Manager framework.

Reviewers: fedor.sergeev, reames
Reviewed By: fedor.sergeev
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D59825

llvm-svn: 357147

5 years agoReworked all the utilities/meta tests to use ASSERT_SAME_TYPE instead of 'static_asse...
Marshall Clow [Thu, 28 Mar 2019 03:39:25 +0000 (03:39 +0000)]
Reworked all the utilities/meta tests to use ASSERT_SAME_TYPE instead of 'static_assert( is_same<'. Much easier to read. I left two tests alone: is_same.pass.cpp, which should call 'is_same' directly, and common_type.pass.cpp, which Eric is working on. NFC intended

llvm-svn: 357146

5 years ago[WebAssembly] Rename wasm fixup kinds
Sam Clegg [Thu, 28 Mar 2019 02:07:28 +0000 (02:07 +0000)]
[WebAssembly] Rename wasm fixup kinds

These fixup kinds are not explicitly related to the code section.  They
are there to signal how to apply the fixup.

Also, a couple of other minor wasm cleanups.

Differential Revision: https://reviews.llvm.org/D59908

llvm-svn: 357145

5 years ago[WebAssembly] Fix typo from rL357143
Sam Clegg [Thu, 28 Mar 2019 02:04:31 +0000 (02:04 +0000)]
[WebAssembly] Fix typo from rL357143

llvm-svn: 357144

5 years ago[WebAssembly] Improve invalid relocation error message
Sam Clegg [Thu, 28 Mar 2019 02:02:07 +0000 (02:02 +0000)]
[WebAssembly] Improve invalid relocation error message

This message now matches the equivalent message in the ELF linker.

Differential Revision: https://reviews.llvm.org/D59860

llvm-svn: 357143

5 years agoAdd reproduction instructions to llvm-objdump's embedded source test.
Eric Christopher [Thu, 28 Mar 2019 01:56:16 +0000 (01:56 +0000)]
Add reproduction instructions to llvm-objdump's embedded source test.

llvm-svn: 357142

5 years agoCopy the breakpoint site owner's collection so we can drop
Jim Ingham [Thu, 28 Mar 2019 01:51:33 +0000 (01:51 +0000)]
Copy the breakpoint site owner's collection so we can drop
the collection lock before we iterate over the owners calling ShouldStop.

BreakpointSite::ShouldStop can do a lot of work, and might by chance hit the same breakpoint
site again on another thread.  So instead of holding the site's owners lock
while iterating over them calling ShouldStop, I make a local copy of the list, drop the lock
and then iterate over the copy calling BreakpointLocation::ShouldStop.

It's actually quite difficult to make this cause problems because usually all the
action happens on the private state thread, and the lock is recursive.

I have a report where some code hit the ASAN error breakpoint, went to
compile the ASAN error gathering expression, in the course of compiling
that we went to fetch the ObjC runtime data, but the state of the program
was such that the ObjC runtime grubbing function triggered an ASAN error and
we were executing that function on another thread.

I couldn't figure out a way to reproduce that situation in a test.  But this is an
NFC change anyway, it just makes the locking strategy more narrowly focused.

<rdar://problem/49074093>

llvm-svn: 357141

5 years agoInline a trivial function. NFC.
Rui Ueyama [Thu, 28 Mar 2019 01:37:48 +0000 (01:37 +0000)]
Inline a trivial function. NFC.

I found that hiding this particular actual expression doesn't help
readers understand the code. So I remove and inline that function.

llvm-svn: 357140

5 years ago[libc++] Rename span's as_writeable_bytes to as_writable_bytes
Louis Dionne [Thu, 28 Mar 2019 01:27:52 +0000 (01:27 +0000)]
[libc++] Rename span's as_writeable_bytes to as_writable_bytes

Summary: The Standard says as_writable_bytes.

Reviewers: mclow.lists, EricWF

Subscribers: christof, jkorous, dexonsmith, libcxx-commits

Differential Revision: https://reviews.llvm.org/D59882

llvm-svn: 357139

5 years agoFix typoed variable name.
Eric Christopher [Thu, 28 Mar 2019 01:12:13 +0000 (01:12 +0000)]
Fix typoed variable name.

NFCI.

llvm-svn: 357138

5 years ago[NewPM] Fix a nasty bug with analysis invalidation in the new PM.
Chandler Carruth [Thu, 28 Mar 2019 00:51:36 +0000 (00:51 +0000)]
[NewPM] Fix a nasty bug with analysis invalidation in the new PM.

The issue here is that we actually allow CGSCC passes to mutate IR (and
therefore invalidate analyses) outside of the current SCC. At a minimum,
we need to support mutating parent and ancestor SCCs to support the
ArgumentPromotion pass which rewrites all calls to a function.

However, the analysis invalidation infrastructure is heavily based
around not needing to invalidate the same IR-unit at multiple levels.
With Loop passes for example, they don't invalidate other Loops. So we
need to customize how we handle CGSCC invalidation. Doing this without
gratuitously re-running analyses is even harder. I've avoided most of
these by using an out-of-band preserved set to accumulate the cross-SCC
invalidation, but it still isn't perfect in the case of re-visiting the
same SCC repeatedly *but* it coming off the worklist. Unclear how
important this use case really is, but I wanted to call it out.

Another wrinkle is that in order for this to successfully propagate to
function analyses, we have to make sure we have a proxy from the SCC to
the Function level. That requires pre-creating the necessary proxy.

The motivating test case now works cleanly and is added for
ArgumentPromotion.

Thanks for the review from Philip and Wei!

Differential Revision: https://reviews.llvm.org/D59869

llvm-svn: 357137

5 years ago[Process] Reorder declarations and document ReadMemoryFromInferior.
Davide Italiano [Thu, 28 Mar 2019 00:07:33 +0000 (00:07 +0000)]
[Process] Reorder declarations and document ReadMemoryFromInferior.

llvm-svn: 357136

5 years ago[ObjectFileMachO] Remove another debugging aid.
Davide Italiano [Thu, 28 Mar 2019 00:07:20 +0000 (00:07 +0000)]
[ObjectFileMachO] Remove another debugging aid.

Pointed out by Jason.

llvm-svn: 357135

5 years ago[ObjectFileMachO] Disable memory caching for savecore.
Davide Italiano [Thu, 28 Mar 2019 00:07:07 +0000 (00:07 +0000)]
[ObjectFileMachO] Disable memory caching for savecore.

Summary:
It's not really useful, and largely increases the footprint.

<rdar://problem/49293525>

Reviewers: jasonmolenda

Subscribers: llvm-commits, lldb-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59896

llvm-svn: 357134

5 years ago[ELF] Dump symbols ordered by profiled guided section layout to file.
Rui Ueyama [Wed, 27 Mar 2019 23:52:22 +0000 (23:52 +0000)]
[ELF] Dump symbols ordered by profiled guided section layout to file.

Patch by Tiancong Wang.

In D36351, Call-Chain Clustering (C3) heuristic is implemented with
option --call-graph-ordering-file <file>.
This patch adds a flag --print-symbol-order=<file> to LLD, and when
specified, it prints out the symbols ordered by the heuristics to the
file. The symbols printout is helpful to those who want to understand
the heuristics and want to reproduce the ordering with
--symbol-ordering-file in later pass.

Differential Revision: https://reviews.llvm.org/D59311

llvm-svn: 357133

5 years ago[X86] Add test cases from PR27202.
Craig Topper [Wed, 27 Mar 2019 23:12:19 +0000 (23:12 +0000)]
[X86] Add test cases from PR27202.

llvm-svn: 357132

5 years agoTeach TypeSystem about PDBASTParser
Nathan Lanza [Wed, 27 Mar 2019 23:00:47 +0000 (23:00 +0000)]
Teach TypeSystem about PDBASTParser

Currently, only ClangASTContext knows about PDBASTParser. Eventually
we want the TypeSystem to have getters/setters for the base parser
and then have the TypeSystem subclasses know about the proper
PDBASTParser subclasses. This is similar to how DWARFASTParsers work.

llvm-svn: 357131

5 years ago[ARM] Remove dead function ARMMCCodeEmitter::getSOImmOpValue
Sam Clegg [Wed, 27 Mar 2019 23:00:12 +0000 (23:00 +0000)]
[ARM] Remove dead function ARMMCCodeEmitter::getSOImmOpValue

The last reference to this function was removed from the ARM
td files in 2015 in rL225266.

Differential Revision: https://reviews.llvm.org/D59868

llvm-svn: 357130

5 years ago[x86] improve AVX lowering of vector zext
Sanjay Patel [Wed, 27 Mar 2019 22:42:11 +0000 (22:42 +0000)]
[x86] improve AVX lowering of vector zext

If we know the 2 halves of an oversized zext-in-reg are the same,
don't create those halves independently.

I tried several different approaches to fold this, but it's difficult
to get right during legalization. In the default path, we are creating
a generic shuffle that looks like an unpack high, but it can get
transformed into a different mask (a blend), so it's not
straightforward to match that. If we try to fold after it actually
becomes an X86ISD::UNPCKH node, we can't be sure what the operand node
is - it might be a generic shuffle, or it could be some x86-specific op.

From the test output, we should be doing something like this for SSE4.1
as well, but I'd rather leave that as a follow-up since it involves
changing lowering actions.

Differential Revision: https://reviews.llvm.org/D59777

llvm-svn: 357129

5 years ago[x86] look through bitcast operand of MOVMSK
Sanjay Patel [Wed, 27 Mar 2019 22:24:03 +0000 (22:24 +0000)]
[x86] look through bitcast operand of MOVMSK

This is not exactly NFC because it should make further combines
of MOVMSK easier to match, but there should be no outward differences
because we have isel patterns in place specifically to allow this. See:
  // Also support integer VTs to avoid a int->fp bitcast in the DAG.

llvm-svn: 357128

5 years agoRevert "[WebAssembly] Don't use default GetLinkerPath"
Derek Schuff [Wed, 27 Mar 2019 22:22:18 +0000 (22:22 +0000)]
Revert "[WebAssembly] Don't use default GetLinkerPath"

This reverts commit 4dcf3acce6d7455fd079d8e57441906ca2bad254.
(reverts LLVM SVN r356953)

llvm-svn: 357127

5 years ago[Python] Remove unused includes
Jonas Devlieghere [Wed, 27 Mar 2019 21:45:11 +0000 (21:45 +0000)]
[Python] Remove unused includes

llvm-svn: 357126

5 years agotravis: Add LLVM-8 build
Jan Vesely [Wed, 27 Mar 2019 21:28:31 +0000 (21:28 +0000)]
travis: Add LLVM-8 build

Reviewer: Tom Stellard
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 357125

5 years agoRestructure test suite to follow libc++ standard layout
Louis Dionne [Wed, 27 Mar 2019 21:28:24 +0000 (21:28 +0000)]
Restructure test suite to follow libc++ standard layout

Summary: Subsumes changes requested in https://reviews.llvm.org/D59110

Reviewers: EricWF, ldionne

Subscribers: mgorny, krytarowski, jfb, jdoerfert, libcxx-commits

Differential Revision: https://reviews.llvm.org/D59856

llvm-svn: 357124

5 years ago[X86ISelDAGToDAG] Move initialization of OptForSize and OptForMinSize from Preprocess...
Craig Topper [Wed, 27 Mar 2019 21:05:07 +0000 (21:05 +0000)]
[X86ISelDAGToDAG] Move initialization of OptForSize and OptForMinSize from PreprocessISelDAG to runOnMachineFunction. NFCI

This makes more sense as a place to initialize these. I don't think runOnMachineFunction was overriden when these cached values were originally created.

llvm-svn: 357123