platform/upstream/llvm.git
3 years ago[NFC] Fix a comment in MachinePassManager.h
Yuanfang Chen [Thu, 8 Oct 2020 22:38:57 +0000 (15:38 -0700)]
[NFC] Fix a comment in MachinePassManager.h

Fix "warning: '\returns' command used in a comment that is not attached
to a function or method declaration [-Wdocumentation]
1 warning generated."

3 years ago[X86] Fix some clang-tidy bugprone-argument-comment issues
Fangrui Song [Thu, 8 Oct 2020 22:22:32 +0000 (15:22 -0700)]
[X86] Fix some clang-tidy bugprone-argument-comment issues

3 years agoChange the default handling of SIGCONT to nosuppress/nostop/notify
Jim Ingham [Thu, 8 Oct 2020 22:21:51 +0000 (15:21 -0700)]
Change the default handling of SIGCONT to nosuppress/nostop/notify

Except for the few people actually debugging shells, stopping on a
SIGCONT doesn't add any value.  And for people trying to run tests
under the debugger, stopping here is actively inconvenient.  So this
patch switches the default behavior to not stop.

Differential Revision: https://reviews.llvm.org/D89019

3 years ago[NFC][MC] MCRegister API typing.
Mircea Trofin [Wed, 7 Oct 2020 23:11:50 +0000 (16:11 -0700)]
[NFC][MC] MCRegister API typing.

Mostly LiveIntervals, with their effects (users).

Differential Revision: https://reviews.llvm.org/D89018

3 years ago[mlir][vector] Add integration test for vector distribute transformation
Thomas Raoux [Thu, 8 Oct 2020 21:45:56 +0000 (14:45 -0700)]
[mlir][vector] Add integration test for vector distribute transformation

Differential Revision: https://reviews.llvm.org/D89062

3 years ago[mlir][vector] Add unit test for vector distribute by block
Thomas Raoux [Thu, 8 Oct 2020 21:41:57 +0000 (14:41 -0700)]
[mlir][vector] Add unit test for vector distribute by block

When distributing a vector larger than the given multiplicity, we can
distribute it by block where each id gets a chunk of consecutive element
along the dimension distributed. This adds a test for this case and adds extra
checks to make sure we don't distribute for cases not multiple of multiplicity.

Differential Revision: https://reviews.llvm.org/D89061

3 years ago[HWAsan][NewPM] Handle hwasan like other sanitizers
Arthur Eubanks [Tue, 6 Oct 2020 23:13:50 +0000 (16:13 -0700)]
[HWAsan][NewPM] Handle hwasan like other sanitizers

Move it as an EP callback (-O[123]) or in addSanitizersAtO0.

This makes it not run in ThinLTO pre-link (like the other sanitizers),
so don't check LTO runs in hwasan-new-pm.c. Changing its position also
seems to change the generated IR. I think we just need to make sure the
pass runs.

Reviewed By: leonardchan

Differential Revision: https://reviews.llvm.org/D88936

3 years ago[LLDB] More Windows non-English locales fixes
Alexandre Ganea [Thu, 8 Oct 2020 21:20:40 +0000 (17:20 -0400)]
[LLDB] More Windows non-English locales fixes

This is a follow-up for https://reviews.llvm.org/D88975

3 years ago[InstCombine] visitTrunc - trunc(shl(X, C)) --> shl(trunc(X),trunc(C)) vector support
Simon Pilgrim [Thu, 8 Oct 2020 21:07:36 +0000 (22:07 +0100)]
[InstCombine] visitTrunc - trunc(shl(X, C)) --> shl(trunc(X),trunc(C)) vector support

Annoyingly vectors aren't supported by shouldChangeType(), but we have precedents for always performing this on vector types (e.g. narrowBinOp).

Differential Revision: https://reviews.llvm.org/D89067

3 years ago[GlobalISel] Add missing pass dependencies for IRTranslator
Quentin Colombet [Thu, 8 Oct 2020 20:54:24 +0000 (13:54 -0700)]
[GlobalISel] Add missing pass dependencies for IRTranslator

The IRTranslator depends on the branch probability info pass when the
optimization level is different than None and it depends all the time on
the StackProtector pass.

We have to explicitly call out pass dependencies otherwise the pass manager
may not be able to schedule the IRTranslator.

Before this patch, we were lucky because previous passes depend on the branch
probability info pass (like the Global Variable Optimization) and the stack
protector pass is initialized in initializeCodeGen.
However, if the target has a custom pipeline without any passes like Global
Variable Optimization, the pipeline creation will fail, at least because of
the branch probability info pass dependency (it is unlikely that
initializeCodeGen is not called).

This patch adds the missing dependencies to the IRTranslator.

Differential Revision: https://reviews.llvm.org/D89063

3 years ago[libc] Update buildbot worker version to 2.8.4.
Paula Toth [Thu, 8 Oct 2020 20:43:47 +0000 (13:43 -0700)]
[libc] Update buildbot worker version to 2.8.4.

Tested locally by connecting to LLVM master. (:
http://lab.llvm.org:8011/#/builders/78/builds/1

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D89069

3 years ago[InstCombine] Add additional trunc(shl(x,c)) -> shl(trunc(x),trunc(c)) vector tests
Simon Pilgrim [Thu, 8 Oct 2020 19:47:07 +0000 (20:47 +0100)]
[InstCombine] Add additional trunc(shl(x,c)) -> shl(trunc(x),trunc(c)) vector tests

3 years ago[InstCombine] allow vector splats for add+xor with low-mask
Sanjay Patel [Thu, 8 Oct 2020 19:49:55 +0000 (15:49 -0400)]
[InstCombine] allow vector splats for add+xor with low-mask

This can be allowed with undef elements too, but that can be another step:
https://alive2.llvm.org/ce/z/hnC4Z-

3 years agoFix typo `DenseElementAttr`-> `DenseElementsAttr` in some comments (NFC)
Mehdi Amini [Thu, 8 Oct 2020 19:40:48 +0000 (19:40 +0000)]
Fix typo `DenseElementAttr`-> `DenseElementsAttr` in some comments (NFC)

3 years ago[Transforms] visitCmpBlock - don't dereference a dyn_cast<>. NFCI.
Simon Pilgrim [Thu, 8 Oct 2020 19:18:18 +0000 (20:18 +0100)]
[Transforms] visitCmpBlock - don't dereference a dyn_cast<>. NFCI.

Use cast<> as we immediately dereference the pointer afterwards - cast<> will assert if we fail.

Prevents clang static analyzer warning that we could deference a null pointer.

3 years ago[InstCombine] remove unnecessary one-use check from add-xor transform
Sanjay Patel [Thu, 8 Oct 2020 18:21:16 +0000 (14:21 -0400)]
[InstCombine] remove unnecessary one-use check from add-xor transform

Pre-conditions seem to be optimal, but we don't need a use check
because we are only replacing an add with a sub.

https://rise4fun.com/Alive/hzN

  Pre: (~C1 | C2 == -1) && isPowerOf2(C2+1)
  %m = and i8 %x, C1
  %f = xor i8 %m, C2
  %r = add i8 %f, C3
  =>
  %r = sub i8 C2 + C3, %m

3 years ago[InstCombine] add tests for add-xor; NFC
Sanjay Patel [Thu, 8 Oct 2020 18:08:06 +0000 (14:08 -0400)]
[InstCombine] add tests for add-xor; NFC

3 years agoFix Wparentheses warning. NFCI.
Simon Pilgrim [Thu, 8 Oct 2020 19:02:04 +0000 (20:02 +0100)]
Fix Wparentheses warning. NFCI.

Wrap the containErrors() calls together - assert we have any containErrors cases in the conditional operator.

3 years ago[SLP] optimizeGatherSequence - assert every Instruction in the worklist is non-null.
Simon Pilgrim [Thu, 8 Oct 2020 18:23:32 +0000 (19:23 +0100)]
[SLP] optimizeGatherSequence - assert every Instruction in the worklist is non-null.

Fixes clang static analyzer warning.

3 years ago[WebAssembly] Handle indirect uses of longjmp
Heejin Ahn [Thu, 8 Oct 2020 09:44:16 +0000 (02:44 -0700)]
[WebAssembly] Handle indirect uses of longjmp

In LowerEmscriptenEHSjLj, `longjmp` used to be replaced with
`emscripten_longjmp_jmpbuf(jmp_buf*, i32)`, which will eventually be
lowered to `emscripten_longjmp(i32, i32)`. The reason we used two
different names was because they had different signatures in the IR
pass.

D88697 fixed this by only using `emscripten_longjmp(i32, i32)` and
adding a `ptrtoint` cast to its first argument, so
```
longjmp(buf, 0)
```
becomes
```
emscripten_longjmp((i32)buf, 0)
```

But this assumed all uses of `longjmp` was a direct call to it, which
was not the case. This patch handles indirect uses of `longjmp` by
replacing
```
longjmp
```
with
```
(i32(*)(jmp_buf*, i32))emscripten_longjmp
```

Reviewed By: tlively

Differential Revision: https://reviews.llvm.org/D89032

3 years ago[KnownBits] Add a sextOrTrunc method
Quentin Colombet [Tue, 6 Oct 2020 23:27:28 +0000 (16:27 -0700)]
[KnownBits] Add a sextOrTrunc method

We already offer zextOrTrunc and it seems natural to offer the
same capability for sign extension.

This patch is a preparatory addition useful for future computeKnownBits
developments.

Differential Revision: https://reviews.llvm.org/D88937

3 years ago[KnownBits] Add a computeForMul method
Quentin Colombet [Tue, 6 Oct 2020 21:41:31 +0000 (14:41 -0700)]
[KnownBits] Add a computeForMul method

This patch refactors the logic in ValueTracking.cpp so that
computeKnownBitsForMul now uses a helper function from KnownBits.

NFC

Differential Revision: https://reviews.llvm.org/D88935

3 years ago[unittests] Add a few tests for computeKnownBits with ranges
Quentin Colombet [Tue, 6 Oct 2020 21:34:47 +0000 (14:34 -0700)]
[unittests] Add a few tests for computeKnownBits with ranges

These tests make sure that the range information is properly
understood during computeKnownBits analysis.

NFC

Differential Revision: https://reviews.llvm.org/D88934

3 years ago[runtimes] Use int main(int, char**) consistently in tests
Louis Dionne [Thu, 8 Oct 2020 17:36:33 +0000 (13:36 -0400)]
[runtimes] Use int main(int, char**) consistently in tests

This is needed when running the tests in Freestanding mode, where main()
isn't treated specially. In Freestanding, main() doesn't get mangled as
extern "C", so whatever runtime we're using fails to find the entry point.

One way to solve this problem is to define a symbol alias from __Z4mainiPPc
to _main, however this requires all definitions of main() to have the same
mangling. Hence this commit.

3 years agoIntroduce and use a new section type for the bb_addr_map section.
Rahman Lavaee [Thu, 8 Oct 2020 18:12:40 +0000 (11:12 -0700)]
Introduce and use a new section type for the bb_addr_map section.

This patch lets the bb_addr_map (renamed to __llvm_bb_addr_map) section use a special section type (SHT_LLVM_BB_ADDR_MAP) instead of SHT_PROGBITS. This would help parsers, dumpers and other tools to use the sh_type ELF field to identify this section rather than relying on string comparison on the section name.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D88199

3 years ago[Transforms] CodeExtractor::verifyAssumptionCache - don't dereference a dyn_cast...
Simon Pilgrim [Thu, 8 Oct 2020 18:03:32 +0000 (19:03 +0100)]
[Transforms] CodeExtractor::verifyAssumptionCache - don't dereference a dyn_cast<>. NFCI.

Use cast<> as we immediately dereference the pointer afterwards - cast<> will assert if we fail.

Prevents clang static analyzer warning that we could deference a null pointer.

3 years ago[Analysis] ScalarEvolution::getUMinFromMismatchedTypes - assert we've found the max...
Simon Pilgrim [Thu, 8 Oct 2020 17:41:55 +0000 (18:41 +0100)]
[Analysis] ScalarEvolution::getUMinFromMismatchedTypes - assert we've found the max type. NFCI.

Found by clang static analyzer.

3 years ago[AVR] Fix null dereference warning. NFCI.
Simon Pilgrim [Thu, 8 Oct 2020 17:05:09 +0000 (18:05 +0100)]
[AVR] Fix null dereference warning. NFCI.

We were checking if the ConstantSDNode was null but then immediately dereferencing it afterward - fold these both into a single check. Use the APInt::ult() helper as well.

Found by clang static analyzer.

3 years ago[OpenMP] Replace OpenMP RTL Functions With OMPIRBuilder and OMPKinds.def
Joseph Huber [Thu, 8 Oct 2020 16:03:11 +0000 (12:03 -0400)]
[OpenMP] Replace OpenMP RTL Functions With OMPIRBuilder and OMPKinds.def

Summary:
Replace the OpenMP Runtime Library functions used in CGOpenMPRuntimeGPU
for OpenMP device code generation with ones in OMPKinds.def and use
OMPIRBuilder for generating runtime calls. This allows us to
consolidate more OpenMP code generation into the OMPIRBuilder. Future
additions to the GPU runtime functions should now go in OMPKinds.def

Reviewers: jdoerfert

Subscribers: aaron.ballman cfe-commits guansong llvm-commits sstefan1 yaxunl

Tags: #OpenMP #LLVM #clang

Differential Revision: https://reviews.llvm.org/D88430

3 years ago[lit] Try to remove the flakeyness of `shtest-timeout.py` and `googletest-timeout...
Dan Liew [Wed, 7 Oct 2020 23:52:19 +0000 (16:52 -0700)]
[lit] Try to remove the flakeyness of `shtest-timeout.py` and `googletest-timeout.py`.

The tests previously relied on the `short.py` and `FirstTest.subTestA`
script being executed on a machine within a short time window (1 or 2
seconds). While this "seems to work" it can fail on resource constrained
machines. We could bump the timeout a little bit (bumping it too
much would mean the test would take a long time to execute) but it wouldn't
really solve the problem of the test being prone to failures.

This patch tries to remove this flakeyness by separating testing into
two separate parts:

1. Testing if a test can hit a timeout.
2. Testing if a test can run to completion in the presence of a
timeout.

This way we can give (1.) a really short timeout (to make the test run
as fast as possible) and (2.) a really long timeout. This means for (2.)
we are no longer trying to rely on the "short" test executing within
some short time window. Instead the window is now 3600 seconds which
should be long enough even for a heavily resource constrained machine to
execute the "short" test.

Thanks to Julian Lettner for suggesting this approach. This superseeds
my original approach in https://reviews.llvm.org/D88807.

This patch also changes the command line override test to run the quick
test rather than the slow one to make the test run faster.

Differential Revision: https://reviews.llvm.org/D89020

3 years ago[sanitizer] Fix Fuchsia bot failure
Teresa Johnson [Thu, 8 Oct 2020 17:43:06 +0000 (10:43 -0700)]
[sanitizer] Fix Fuchsia bot failure

Fixes bot failure from 4d5b1de40eccc7ffcfb859cef407e5f30bee77f8:
https://luci-milo.appspot.com/p/fuchsia/builders/ci/clang-linux-x64/b8867057367989385504

Updates the version of RenderFrame used by Fuchsia and adds a version of
the new RenderNeedsSymbolization.

3 years ago[AIX] Add REQUIRES for powerpc test. NFC
David Green [Thu, 8 Oct 2020 17:40:09 +0000 (18:40 +0100)]
[AIX] Add REQUIRES for powerpc test. NFC

3 years ago[GlobalISel] Add G_VECREDUCE_* opcodes for vector reductions.
Amara Emerson [Fri, 2 Oct 2020 18:56:53 +0000 (11:56 -0700)]
[GlobalISel] Add G_VECREDUCE_* opcodes for vector reductions.

These mirror the IR and SelectionDAG intrinsics & nodes.

Opcodes added:
G_VECREDUCE_SEQ_FADD
G_VECREDUCE_SEQ_FMUL
G_VECREDUCE_FADD
G_VECREDUCE_FMUL
G_VECREDUCE_FMAX
G_VECREDUCE_FMIN
G_VECREDUCE_ADD
G_VECREDUCE_MUL
G_VECREDUCE_AND
G_VECREDUCE_OR
G_VECREDUCE_XOR
G_VECREDUCE_SMAX
G_VECREDUCE_SMIN
G_VECREDUCE_UMAX
G_VECREDUCE_UMIN

Differential Revision: https://reviews.llvm.org/D88750

3 years ago[clang][feature] Add cxx_abi_relative_vtable feature
Leonard Chan [Thu, 8 Oct 2020 17:27:47 +0000 (10:27 -0700)]
[clang][feature] Add cxx_abi_relative_vtable feature

This will be enabled if relative vtables is enabled.

Differential revision: https://reviews.llvm.org/D85924

3 years ago[mlir][Linalg] Add some depedence query methods to LinalgDependenceGraph.
MaheshRavishankar [Thu, 8 Oct 2020 17:01:33 +0000 (10:01 -0700)]
[mlir][Linalg] Add some depedence query methods to LinalgDependenceGraph.

The methods allow to check
- if an operation has dependencies,
- if there is a dependence from one operation to another.

Differential Revision: https://reviews.llvm.org/D88993

3 years ago[flang] Allow "name: value" in compiler directives
peter klausler [Wed, 7 Oct 2020 23:07:10 +0000 (16:07 -0700)]
[flang] Allow "name: value" in compiler directives

Some legacy compiler directives use colons rather than
equals signs.

Differential revision: https://reviews.llvm.org/D89017

3 years ago[lldb] Fix "frame var" for large bitfields
Pavel Labath [Wed, 7 Oct 2020 15:57:16 +0000 (17:57 +0200)]
[lldb] Fix "frame var" for large bitfields

The problem here is in the "sliding" code in
ValueObjectChild::UpdateValue. It modifies m_bitfield_bit_offset and
m_value to ensure the bitfield value fits the window given by the
underlying type.

However, this is broken next time UpdateValue is called, because it
updates the m_value value from the parent. However, the value cannot be
slid again because the m_bitfield_bit_offset is already modified.

It seems this can happen only under specific circumstances. One way to
trigger is is to run an expression which can be interpreted (jitting it
causes a new StackFrame and ValueObject variables to be created).

I fix this bug by modifying m_byte_offset instead of m_scalar, and
ensuring the changes are folded into m_scalar regardless of how many
times UpdateValue is called.

Differential Revision: https://reviews.llvm.org/D88992

3 years ago[lldb] Add a cmake warning about the python/swig incompatibility
Pavel Labath [Wed, 7 Oct 2020 14:36:32 +0000 (16:36 +0200)]
[lldb] Add a cmake warning about the python/swig incompatibility

Raise awareness of the fact that some versions of swig and python (and
build types) just don't mix.

One day this will be a reason to require swig>=4.0, but this version is
too hot off the press right now..

Differential Revision: https://reviews.llvm.org/D88967

3 years ago[libcxx] Fix the thousands_sep test failure
Petr Hosek [Thu, 8 Oct 2020 16:12:57 +0000 (09:12 -0700)]
[libcxx] Fix the thousands_sep test failure

This fixes the issue introduced in 80ef4126b.

3 years ago[OpenMP] Change CMake Configuration to Build for Highest CUDA Architecture by Default
Joseph Huber [Wed, 7 Oct 2020 20:40:47 +0000 (16:40 -0400)]
[OpenMP] Change CMake Configuration to Build for Highest CUDA Architecture by Default

Summary:
This patch changes the CMake files for Clang and Libomptarget to query the
system for its supported CUDA architecture. This makes it much easier for the
user to build optimal code without needing to set the flags manually. This
relies on the now deprecated FindCUDA method in CMake, but full support for
architecture detection is only availible in CMake >3.18

Reviewers: jdoerfert ye-luo

Subscribers: cfe-commits guansong mgorny openmp-commits sstefan1 yaxunl

Tags: #clang #OpenMP

Differential Revision: https://reviews.llvm.org/D87946

3 years ago[LLDB] On Windows, fix tests
Alexandre Ganea [Thu, 8 Oct 2020 15:46:04 +0000 (11:46 -0400)]
[LLDB] On Windows, fix tests

This patch fixes a few issues seen when running `ninja check-lldb` in a Release build with VS2017:

- Some binaries couldn't be found (such as lldb-vscode.exe), because .exe wasn't appended to the file name.
- Many tests used to fail since our installed locale is in French - the OS error messages are not emitted in English.
- Our codepage being Windows-1252, python failed to decode some error messages with accentuations.

Differential Revision: https://reviews.llvm.org/D88975

3 years agoDeferredDiagnosticsEmitter crashes
Geoff Levner [Thu, 8 Oct 2020 14:59:30 +0000 (10:59 -0400)]
DeferredDiagnosticsEmitter crashes

Patch VisitCXXDeleteExpr() in clang::UsedDeclVisitor to avoid it crashing
when the expression's destroyed type is null. According to the comments
in CXXDeleteExpr::getDestroyedType(), this can happen when the type to
delete is a dependent type.

Patch by Geoff Levner.

Differential Revision: https://reviews.llvm.org/D88949

3 years ago[ELF] Don't change binding to STB_WEAK for an undefined specified by -u
Fangrui Song [Wed, 7 Oct 2020 15:45:24 +0000 (08:45 -0700)]
[ELF] Don't change binding to STB_WEAK for an undefined specified by -u

Similar to D66992.
In GNU ld, a -u specified symbol is a STB_DEFAULT undefined.
It cannot be changed to STB_WEAK by a later STB_WEAK undefined in a regular object file.

The behavior is consistent with our model because -u means "we need to fetch a lazy definition".
It should not be altered just because there is also a STB_WEAK undefined.

Note, our -u semantics are still different from GNU ld (https://github.com/ClangBuiltLinux/linux/issues/515):
we don't force the specified symbol to appear in .symtab This is a deliberate decision.

Reviewed By: grimar

Differential Revision: https://reviews.llvm.org/D88945

3 years ago[InstCombine] allow vector splats for add+xor with signmask
Sanjay Patel [Thu, 8 Oct 2020 14:45:42 +0000 (10:45 -0400)]
[InstCombine] allow vector splats for add+xor with signmask

3 years ago[InstCombine] add vector splat tests for add of signmask; NFC
Sanjay Patel [Thu, 8 Oct 2020 13:35:25 +0000 (09:35 -0400)]
[InstCombine] add vector splat tests for add of signmask; NFC

3 years ago[AMDGPU] Add patterns for mad/mac legacy f32 instructions
Jay Foad [Tue, 6 Oct 2020 08:03:53 +0000 (09:03 +0100)]
[AMDGPU] Add patterns for mad/mac legacy f32 instructions

Note that all subtargets up to GFX10.1 have v_mad_legacy_f32, but GFX8/9
lack v_mac_legacy_f32. GFX10.3 has no mad/mac f32 instructions at all.

Differential Revision: https://reviews.llvm.org/D88890

3 years ago[gn build] (manually) port 9b58b0c06e6 better
Nico Weber [Thu, 8 Oct 2020 14:13:54 +0000 (10:13 -0400)]
[gn build] (manually) port 9b58b0c06e6 better

3 years ago[gn build] (manually) port 9b58b0c06e6
Nico Weber [Thu, 8 Oct 2020 14:08:38 +0000 (10:08 -0400)]
[gn build] (manually) port 9b58b0c06e6

3 years ago[lldb] Initial version of FreeBSD remote process plugin
Michał Górny [Thu, 10 Sep 2020 06:24:15 +0000 (08:24 +0200)]
[lldb] Initial version of FreeBSD remote process plugin

Add a new FreeBSD Process plugin using client/server model.  This plugin
is based on the one used by NetBSD.  It currently supports a subset
of functionality for amd64.  It is automatically used when spawning
lldb-server.  It can also be used by lldb client by setting
FREEBSD_REMOTE_PLUGIN environment variable (to any value).

The code is capable of debugging simple single-threaded programs.  It
supports general purpose, debug and FPU registers (up to XMM) of amd64,
basic signalling, software breakpoints.

Adding the support for the plugin involves removing some dead code
from FreeBSDPlatform plugin (that was not ever used because
CanDebugProcess() returned false), and replacing it with appropriate
code from NetBSD platform support.

Differential Revision: https://reviews.llvm.org/D88796

3 years ago[mlir] Rank reducing subview conversion to LLVM
Jakub Lichman [Thu, 8 Oct 2020 13:28:55 +0000 (13:28 +0000)]
[mlir] Rank reducing subview conversion to LLVM

This commit adjusts SubViewOp lowering to take rank reduction into account.

Differential Revision: https://reviews.llvm.org/D88883

3 years ago[AIX] add new option -mignore-xcoff-visibility
diggerlin [Thu, 8 Oct 2020 13:34:58 +0000 (09:34 -0400)]
[AIX] add new option -mignore-xcoff-visibility

SUMMARY:

In IBM compiler xlclang , there is an option -fnovisibility which suppresses visibility. For more details see: https://www.ibm.com/support/knowledgecenter/SSGH3R_16.1.0/com.ibm.xlcpp161.aix.doc/compiler_ref/opt_visibility.html.

We need to add the option -mignore-xcoff-visibility for compatibility with the IBM AIX OS (as the option is enabled by default in AIX). With this option llvm does not emit any visibility attribute to ASM or XCOFF object file.

The option only work on the AIX OS, for other non-AIX OS using the option will report an unsupported options error.

In AIX OS:

1.1  the option -mignore-xcoff-visibility is enabled by default , if there is not -fvisibility=* and -mignore-xcoff-visibility explicitly in the clang command .

1.2 if there is -fvisibility=* explicitly but not -mignore-xcoff-visibility  explicitly in the clang command.  it will generate visibility attributes.

1.3 if there are  both  -fvisibility=* and  -mignore-xcoff-visibility  explicitly in the clang command. The option  "-mignore-xcoff-visibility" wins , it do not emit the visibility attribute.

The option -mignore-xcoff-visibility has no effect on visibility attribute when compile with -emit-llvm option to generated LLVM IR.

Reviewer: daltenty,Jason Liu

Differential Revision: https://reviews.llvm.org/D87451

3 years ago[clangd] New CC Ranking Model to fix bad inference due to overflow.
Utkarsh Saxena [Thu, 8 Oct 2020 11:13:40 +0000 (13:13 +0200)]
[clangd] New CC Ranking Model to fix bad inference due to overflow.

Unreachable file distances are represented as
`std::numeric_limits<unsigned>::max()`.
The previous dataset recorded the signals as `signed int` capturing this default
value as `-1`.

A new dataset was regenerated and a new model is trained that
interprets this unreachable as the intended value.

Distribution of `SymbolScopeDistance`:
Value         Normalised Frequency
0             46.6184
4294967295    29.5342
6             14.5666
4              6.4433
2              1.4534
8              0.5760
10             0.3581
....

Distribution of `FileProximityDistance`:
Value         Normalised Frequency
4294967295    39.9378
12             5.1997
14             4.9828
15             4.4221
16             4.3820
13             4.2765
17             3.8957
11             3.6387
19             3.4799
18             3.4076
....

Differential Revision: https://reviews.llvm.org/D89035

3 years ago[llvm-readobj] - Fix possible crashes related to dumping gnu hash symbols.
Georgii Rymar [Wed, 30 Sep 2020 12:12:41 +0000 (15:12 +0300)]
[llvm-readobj] - Fix possible crashes related to dumping gnu hash symbols.

It fixes possible scenarios when we crash/assert with `--hash-symbols` when
dumping an invalid GNU hash table which has a broken value in the buckets array.

This fixes a crash reported in comments for
https://bugs.llvm.org/show_bug.cgi?id=47681

Differential revision: https://reviews.llvm.org/D88561

3 years ago[mlir][Linalg] Add TensorsToBuffers support for Constant ops.
Nicolas Vasilache [Thu, 8 Oct 2020 12:47:41 +0000 (12:47 +0000)]
[mlir][Linalg] Add TensorsToBuffers support for Constant ops.

This revision also inserts an end-to-end test that lowers tensors to buffers all the way to executable code on CPU.

Differential revision: https://reviews.llvm.org/D88998

3 years ago[mlir][spirv] Add OpenCL extended ops: exp, fabs, s_abs
Konrad Dobros [Thu, 1 Oct 2020 00:28:13 +0000 (02:28 +0200)]
[mlir][spirv] Add OpenCL extended ops: exp, fabs, s_abs

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D88966

3 years ago[AMDGPU] Use isLegalMUBUFImmOffset more
Sebastian Neubauer [Wed, 7 Oct 2020 12:47:36 +0000 (14:47 +0200)]
[AMDGPU] Use isLegalMUBUFImmOffset more

Instead of hardcoding isUInt<12>.

Differential Revision: https://reviews.llvm.org/D88961

3 years ago[OpenMP] Add Error Handling for Conflicting Pointer Sizes for Target Offload
Joseph Huber [Wed, 7 Oct 2020 18:13:14 +0000 (14:13 -0400)]
[OpenMP] Add Error Handling for Conflicting Pointer Sizes for Target Offload

Summary:
This patch adds an error to Clang that detects if OpenMP offloading is used
between two architectures with incompatible pointer sizes. This ensures that
the data mapping can be done correctly and solves an issue in code generation
generating the wrong size pointer.

Reviewer: jdoerfert

Subscribers: cfe-commits delcypher guansong llvm-commits sstefan1 yaxunl

Tags: #OpenMP #Clang

Differential Revision: https://reviews.llvm.org/D88594

3 years ago[InstCombine] matchFunnelShift - support non-uniform constant vector shift amounts...
Simon Pilgrim [Thu, 8 Oct 2020 11:56:27 +0000 (12:56 +0100)]
[InstCombine] matchFunnelShift - support non-uniform constant vector shift amounts (PR46895)

Complete basic PR46895 fixes by refactoring D87452/D88402 to allow us to match non-uniform constant values.

We still don't handle non-uniform vectors that contain undef elements, but that can wait until we have a decent generic mechanism for this.

Differential Revision: https://reviews.llvm.org/D88420

3 years ago[clangd] Add a missing include-fixer test for incomplete_type, NFC.
Haojian Wu [Thu, 8 Oct 2020 11:33:07 +0000 (13:33 +0200)]
[clangd] Add a missing include-fixer test for incomplete_type, NFC.

Also sort the list to make it easier to verify with the implementation
code.

Differential Revision: https://reviews.llvm.org/D88964

3 years ago[Driver] Add output file to properties of Command
Serge Pavlov [Thu, 23 Apr 2020 17:27:14 +0000 (00:27 +0700)]
[Driver] Add output file to properties of Command

Object of class `Command` contains various properties of a command to
execute, but output file was missed from them. This change adds this
property. It is required for reporting consumed time and memory implemented
in D78903 and may be used in other cases too.

Differential Revision: https://reviews.llvm.org/D78902

3 years ago[DebugInfo] Improve dbg preservation in LSR.
Markus Lavin [Thu, 8 Oct 2020 10:49:51 +0000 (12:49 +0200)]
[DebugInfo] Improve dbg preservation in LSR.

Use SCEV to salvage additional @llvm.dbg.value that have turned into
referencing undef after transformation (and traditional
salvageDebugInfo). Before transformation compute SCEV for each
@llvm.dbg.value in the loop body and store it (along side its current
DIExpression). After transformation update those @llvm.dbg.value now
referencing undef by comparing its stored SCEV to the SCEV of the
current loop-header PHI-nodes. Allow match with offset by inserting
compensation code in the DIExpression.

Includes fix for the nullptr deref that caused the original commit
to be reverted in 9d63029770.

Fixes : PR38815

Differential Revision: https://reviews.llvm.org/D87494

3 years ago[AMDGPU][MC][GFX1030] Disabled v_mac_f32
Dmitry Preobrazhensky [Thu, 8 Oct 2020 10:34:52 +0000 (13:34 +0300)]
[AMDGPU][MC][GFX1030] Disabled v_mac_f32

See bug 47741 <https://bugs.llvm.org/show_bug.cgi?id=47741>

Reviewers: nhaehnle, rampitec

Differential Revision: https://reviews.llvm.org/D89000

3 years agoAArch64: treat MC expressions as 2s complement arithmetic.
Tim Northover [Tue, 22 Sep 2020 10:42:37 +0000 (11:42 +0100)]
AArch64: treat MC expressions as 2s complement arithmetic.

We had a couple of over-zealous diagnostics that meant IR with a reasonable and
valid interpretation was rejected.

3 years ago[llvm-objdump] Ensure we consistently use the llvm::stable_sort wrappers.
Simon Pilgrim [Thu, 8 Oct 2020 10:43:34 +0000 (11:43 +0100)]
[llvm-objdump] Ensure we consistently use the llvm::stable_sort wrappers.

We use this everywhere else in this file, these were just missed.

3 years ago[InstCombine] matchRotate - add support for matching general funnel shifts with const...
Simon Pilgrim [Thu, 8 Oct 2020 10:04:54 +0000 (11:04 +0100)]
[InstCombine] matchRotate - add support for matching general funnel shifts with constant shift amounts (PR46896)

First step towards extending the existing rotation support to full funnel shift handling now that the backend legalization support has improved.

This enables us to match the shift by constant cases, which are pretty trivial to expand again if necessary.

D88420 will add non-uniform support for funnel shifts as well once its been finalized.

Differential Revision: https://reviews.llvm.org/D88834

3 years ago[mlir] Add basic support for dynamic tensor results in TensorToBuffers.cpp.
Alexander Belyaev [Thu, 8 Oct 2020 09:07:36 +0000 (11:07 +0200)]
[mlir] Add basic support for dynamic tensor results in TensorToBuffers.cpp.

The simplest case is when the indexing maps are DimIds in every component. This covers cwise ops.

Also:
* Expose populateConvertLinalgOnTensorsToBuffersPatterns in Transforms.h
* Expose emitLoopRanges in Transforms.h

Differential Revision: https://reviews.llvm.org/D88781

3 years ago[InstCombine] canNarrowShiftAmt - replace custom Constant matching with m_SpecificInt...
Simon Pilgrim [Thu, 8 Oct 2020 09:53:32 +0000 (10:53 +0100)]
[InstCombine] canNarrowShiftAmt - replace custom Constant matching with m_SpecificInt_ICMP

The existing code ignores undef values which matches m_SpecificInt_ICMP, although m_SpecificInt_ICMP returns false for an all-undef constant, I've added test coverage at rGfe0197e194a64f9 to show that undef folding should already have dealt with that case.

3 years agoImport llvm::StringSwitch into mlir namespace.
Christian Sigg [Wed, 7 Oct 2020 14:17:35 +0000 (16:17 +0200)]
Import llvm::StringSwitch into mlir namespace.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D88971

3 years ago[llvm-readobj][test] - Improve testing in hash-table.test
Georgii Rymar [Mon, 5 Oct 2020 09:29:18 +0000 (12:29 +0300)]
[llvm-readobj][test] - Improve testing in hash-table.test

This makes tests stricter and adds cases to verify what
we do when:

1) there is no `DT_HASH` tag (but there is a `SHT_HASH` section in sections header)
2) the sh_entsize of the `SHT_HASH` section is not equal to 4.

Differential revision: https://reviews.llvm.org/D88812

3 years ago[Test] Add test showing that we fail to eliminate implied exit conditions
Max Kazantsev [Thu, 8 Oct 2020 09:26:14 +0000 (16:26 +0700)]
[Test] Add test showing that we fail to eliminate implied exit conditions

3 years ago[llvm-readobj] Add --coff-tls-directory flag to print TLS Directory & test.
Luqman Aden [Thu, 8 Oct 2020 08:43:50 +0000 (01:43 -0700)]
[llvm-readobj] Add --coff-tls-directory flag to print TLS Directory & test.

Akin to dumpbin's /TLS option, this will print out the TLS directory, if
present, in the image.

Example output:
```
> llvm-readobj --coff-tls-directory test.exe
File: test.exe
Format: COFF-x86-64
Arch: x86_64
AddressSize: 64bit
TLSDirectory {
  StartAddressOfRawData: 0x140004000
  EndAddressOfRawData: 0x140004040
  AddressOfIndex: 0x140002000
  AddressOfCallBacks: 0x0
  SizeOfZeroFill: 0x0
  Characteristics [ (0x0)
  ]
}
```

Reviewed By: jhenderson, grimar

Differential Revision: https://reviews.llvm.org/D88635

3 years ago[cmake] Fix cmake warning in standalone compiler-rt builds.
Pierre Gousseau [Thu, 8 Oct 2020 08:45:59 +0000 (09:45 +0100)]
[cmake] Fix cmake warning in standalone compiler-rt builds.

```
cd compiler-rt/build
cmake -G Ninja ../ -DCOMPILER_RT_STANDALONE_BUILD=ON
-DLLVM_CONFIG_PATH=<...>llvm-project/build/bin/llvm-config
-DCOMPILER_RT_INCLUDE_TESTS=ON
```

```
-- check-shadowcallstack does nothing.
Traceback (most recent call last):
  File "<string>", line 22, in <module>
  IndexError: list index out of range
  -- Configuring done
  -- Generating done
```

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D88957

3 years ago[mlir] Added strides check to rank reducing subview verification
Jakub Lichman [Thu, 8 Oct 2020 07:38:41 +0000 (07:38 +0000)]
[mlir] Added strides check to rank reducing subview verification

Added missing strides check to verification method of rank reducing subview
which enforces strides specification for the resulting type.

Differential Revision: https://reviews.llvm.org/D88879

3 years ago[AMDGPU] Prefer SplitVectorLoad/Store over expandUnalignedLoad/Store
Mirko Brkusanin [Tue, 6 Oct 2020 13:20:29 +0000 (15:20 +0200)]
[AMDGPU] Prefer SplitVectorLoad/Store over expandUnalignedLoad/Store

ExpandUnalignedLoad/Store can sometimes produce unnecessary copies to
temporary stack slot. We should prefer splitting vectors if possible.

Differential Revision: https://reviews.llvm.org/D88882

3 years ago[AMDGPU] Add test with redundant copies to temporary stack slot produced by expandUna...
Mirko Brkusanin [Tue, 6 Oct 2020 13:16:31 +0000 (15:16 +0200)]
[AMDGPU] Add test with redundant copies to temporary stack slot produced by expandUnalignedLoad

Differential Revision: https://reviews.llvm.org/D88895

3 years ago[AST][RecoveryExpr] Support dependent cast-expr in C for error-recovery.
Haojian Wu [Thu, 8 Oct 2020 08:00:29 +0000 (10:00 +0200)]
[AST][RecoveryExpr] Support dependent cast-expr in C for error-recovery.

Suppress spurious "typecheck_cond_expect_scalar_operand" diagnostic.

See whole context: https://reviews.llvm.org/D85025

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D84387

3 years ago[clangd] Fix a typo, NFC.
Haojian Wu [Thu, 8 Oct 2020 07:35:49 +0000 (09:35 +0200)]
[clangd] Fix a typo, NFC.

3 years ago[LV] Collect dead induction truncates
David Green [Thu, 8 Oct 2020 07:28:58 +0000 (08:28 +0100)]
[LV] Collect dead induction truncates

We currently collect the ICmp and Add from an induction variable,
marking them as dead so that vplan values are not created for them. This
extends that to include any single use trunk from the ICmp, which allows
the Add to more readily be removed too.

This can help with costing vplan nodes, as the ICmp and Add are more
reliably removed and are not double-counted.

Differential Revision: https://reviews.llvm.org/D88873

3 years ago[ARM] Replace llvm.experimental.vector.reduce.smax with llvm.vector.reduce.smax. NFC
David Green [Thu, 8 Oct 2020 07:05:48 +0000 (08:05 +0100)]
[ARM] Replace llvm.experimental.vector.reduce.smax with llvm.vector.reduce.smax. NFC

This fixes up some newer tests after D88787.

3 years ago[LLD] Ignore ELF tests when ld.lld defaults to MinGW
Mateusz Mikuła [Thu, 8 Oct 2020 06:34:18 +0000 (09:34 +0300)]
[LLD] Ignore ELF tests when ld.lld defaults to MinGW

Follow-up to D87418.

Differential Revision: https://reviews.llvm.org/D88991

3 years ago[LLD] [ELF] Fix up a comment regarding the --wrap option. NFC.
Martin Storsjö [Tue, 6 Oct 2020 10:23:57 +0000 (13:23 +0300)]
[LLD] [ELF] Fix up a comment regarding the --wrap option. NFC.

Add missing leading underscores to the __wrap_<symbol> and
__real_<symbol> names.

Differential Revision: https://reviews.llvm.org/D89008

3 years agoUpdate documentation and implementation of stage3 build
Serge Guelton [Wed, 7 Oct 2020 17:43:55 +0000 (13:43 -0400)]
Update documentation and implementation of stage3 build

Have the build work out of the box by forcing an LLD build.

That way, we don't require an external LTO-aware linker,
as we build one.

Also remove reference to the seemingly dead builder.

Differential Revision: https://reviews.llvm.org/D88990

3 years agoReturn "[SCEV] Prove implicaitons via AddRec start"
Max Kazantsev [Thu, 8 Oct 2020 03:50:44 +0000 (10:50 +0700)]
Return "[SCEV] Prove implicaitons via AddRec start"

The initial version of the patch was reverted because it missed the check that
the predicate being proved is actually guarded by this check on 1st iteration.
If it was not executed on 1st iteration (but possibly executes after that), then
it is incorrect to use reasoning about IV start to prove it.

Added the test where the miscompile was seen. Unfortunately, my attempts
to reduce it with bugpoint did not succeed; it can further be reduced when
we understand how to do it without losing the initial bug's notion.

Returning assuming the miscompiles are now gone.

Differential Revision: https://reviews.llvm.org/D88208

3 years ago[NewPM] Use PassInstrumentation for -verify-each
Arthur Eubanks [Tue, 22 Sep 2020 16:34:46 +0000 (09:34 -0700)]
[NewPM] Use PassInstrumentation for -verify-each

This removes "VerifyEachPass" parameters from a lot of functions which is nice.

Don't verify after special passes or VerifierPass.

This introduces verification on loop and cgscc passes, verifying the corresponding function/module.

Reviewed By: ychen

Differential Revision: https://reviews.llvm.org/D88764

3 years agoRevert "[Support][unittests] Enforce alignment in ConvertUTFTest"
Nico Weber [Thu, 8 Oct 2020 02:23:08 +0000 (22:23 -0400)]
Revert "[Support][unittests] Enforce alignment in ConvertUTFTest"

This reverts commit 53b3873cf428fd78f1d92504cc20adf11181ead7.
Seems to break SupportTests.exe's
ConvertUTFTest.UTF16WrappersForConvertUTF16ToUTF8String
on Windows.

3 years agoBPF: fix incorrect DAG2DAG load optimization
Yonghong Song [Wed, 7 Oct 2020 23:24:33 +0000 (16:24 -0700)]
BPF: fix incorrect DAG2DAG load optimization

Currently, bpf backend Instruction section DAG2DAG phase has
an optimization to replace loading constant struct memeber
or array element with direct values. The reason is that these
locally defined struct or array variables may have their
initial values stored in a readonly section and early bpf
ecosystem is not able to handle such cases.

Bpf ecosystem now can not only handle readonly sections,
but also global variables. global variable can also have
initialized data and global variable may or may not be constant,
i.e., global variable data can be put in .data section or .rodata
section. This exposed a bug in DAG2DAG Load optimization
as it did not check whether the global variable is constant
or not.

This patch fixed the bug by checking whether global variable,
representing the initial data, is constant or not and will not
do optimization if it is not a constant.

Another bug is also fixed in this patch to check whether
the load is simple (not volatile/atomic) or not. If it is
not simple, we will not do optimization. To summary for
globals:
   - struct t var = { ... } ;  // no load optimization
   - const struct t var = { ... }; // load optimization is possible
   - volatile const struct t var = { ... }; // no load optimization

Differential Revision: https://reviews.llvm.org/D89021

3 years ago[X86] Fix bug in -mlvi-cfi that may clobber a live register
Scott Constable [Thu, 8 Oct 2020 01:32:45 +0000 (18:32 -0700)]
[X86] Fix bug in -mlvi-cfi that may clobber a live register

Fix for this bug: https://bugs.llvm.org/show_bug.cgi?id=47740

The fix uses the existing findDeadCallerSavedReg() function instead of a hacky heuristic to find a scratch register to clobber.

Differential Revision: https://reviews.llvm.org/D88925

3 years ago[X86] Move findDeadCallerSavedReg() into X86RegisterInfo
Scott Constable [Thu, 8 Oct 2020 01:30:37 +0000 (18:30 -0700)]
[X86] Move findDeadCallerSavedReg() into X86RegisterInfo

The findDeadCallerSavedReg() function has utility outside of X86FrameLowering.cpp

Differential Revision: https://reviews.llvm.org/D88924

3 years agoRemove unused variables
Geoffrey Martin-Noble [Thu, 8 Oct 2020 01:24:24 +0000 (18:24 -0700)]
Remove unused variables

These are unused since
https://reviews.llvm.org/rG35cb45c533fb76dcfc9f44b4e8bbd5d8a855ed2a
causing `-Wunused` warnings.

Differential Revision: https://reviews.llvm.org/D89022

3 years ago[IRMover] Avoid materializing global value that belongs to not-yet-linked module
Yuanfang Chen [Thu, 8 Oct 2020 01:13:26 +0000 (18:13 -0700)]
[IRMover] Avoid materializing global value that belongs to not-yet-linked module

We saw the same assertion failure mentioned here
https://bugs.llvm.org/show_bug.cgi?id=42063 in our internal tests.

The failure happens in the same circumstance as D47898 and D66814 where
uniqueing of DICompositeTypes causes `Mapper::mapValue` to be called on
GlobalValues(`G`) from a not-yet-linked module(`M`). The following type-mapping for
`G` may not complete correctly (fail to unique types etc.  depending on the
the complexity of the types) because IRLinker::computeTypeMapping is not done for `M`
in this path.

D47898 and D66814 fixed some type-mapping issue after Mapper::mapValue
is called on `G`. However, it seems it did not handle some complex cases. I
think we should delay linking globals like `G` until its owing module is
linked. In this way, we could save unnecessary type mapping and prune
these corner cases. It is also supposed to reduce the total number of structs
ending up in the combined module.

D47898 is reverted (its test is kept) because it regresses the test case here.
D66814 could also be reverted (the `check-all` looks good). But it looks reasonable
anyway, so I thought I should keep it.

Also tested the patch with clang self-host regularLTO/ThinLTO build, things look
good as well.

Reviewed By: tejohnson

Differential Revision: https://reviews.llvm.org/D87001

3 years ago[libcxx] Use runtime rather then compile-time glibc version check
Petr Hosek [Wed, 23 Sep 2020 22:53:45 +0000 (15:53 -0700)]
[libcxx] Use runtime rather then compile-time glibc version check

glibc supports versioning, so it's possible to build against older
version and run against newer version. This is sometimes relied on
in practice, e.g. in Fuchsia build we build against older sysroot
(equivalent to Ubuntu Trusty) to cover the broadest possible range
of host systems, but that doesn't necessarily match the system that
binary is going to run on which may have newer version, in which case
the compile test used in curr_symbol is going to fail. Using runtime
check is more reliable. This is a follow up to D56702 which addressed
one instance, this patch addresses all of the remaining ones.

Differential Revision: https://reviews.llvm.org/D88188

3 years ago[ImplicitNullChecks] Support complex addressing mode
Anna Thomas [Thu, 24 Sep 2020 15:00:46 +0000 (11:00 -0400)]
[ImplicitNullChecks] Support complex addressing mode

The pass is updated to handle loads through complex addressing mode,
specifically, when we have a scaled register and a scale.
It requires two API updates in TII which have been implemented for X86.

See added IR and MIR testcases.

Tests-Run: make check
Reviewed-By: reames, danstrushin
Differential Revision: https://reviews.llvm.org/D87148

3 years ago[X86] Defer the creation of LCMPXCHG16B_SAVE_RBX until finalize-isel
Craig Topper [Wed, 7 Oct 2020 21:20:18 +0000 (14:20 -0700)]
[X86] Defer the creation of LCMPXCHG16B_SAVE_RBX until finalize-isel

We need to use LCMPXCHG16B_SAVE_RBX if RBX/EBX is being used as
the frame pointer. We previously checked for this during type
legalization, but that's too early to know for sure if the base
pointer is needed.

This patch adds a new pseudo instruction to emit from isel that
uses a virtual register for the RBX input. Then we use the custom
inserter hook to emit LCMPXCHG16B if RBX isn't needed as a base
pointer or LCMPXCHG16B_SAVE_RBX if it is.

Fixes PR42064.

Reviewed By: pengfei

Differential Revision: https://reviews.llvm.org/D88808

3 years agoAdd test for disabling Dead Virtual Function Elimination
Dominic Chen [Sat, 26 Sep 2020 01:46:49 +0000 (21:46 -0400)]
Add test for disabling Dead Virtual Function Elimination

Differential Revision: https://reviews.llvm.org/D88349

3 years ago[sanitizer] Skip stack symbolization when not required for print format
Teresa Johnson [Sat, 26 Sep 2020 06:03:06 +0000 (23:03 -0700)]
[sanitizer] Skip stack symbolization when not required for print format

Adds a check to avoid symbolization when printing stack traces if the
stack_trace_format flag does not need it. While there is a symbolize
flag that can be turned off to skip some of the symbolization,
SymbolizePC() still unconditionally looks up the module name and offset.
Avoid invoking SymbolizePC() at all if not needed.

This is an efficiency improvement when dumping all stack traces as part
of the memory profiler in D87120, for large stripped apps where we want
to symbolize as a post pass.

Differential Revision: https://reviews.llvm.org/D88361

3 years ago[flang][msvc] Avoid dependence on long double
peter klausler [Fri, 2 Oct 2020 19:39:05 +0000 (12:39 -0700)]
[flang][msvc] Avoid dependence on long double

MSVC does not support a distinct 80-bit extended precision
"long double" type.  Rework the I/O runtime to avoid using
native C/C++ type names.  Centralize the mappings between
the KIND= type parameters of REAL and their binary precisions
in the common real.h header file, and use KIND type parameter
values rather than binary precisions for clarity where
appropriate.

This patch, if successful, should obviate the need for
Differential review D88511.

(This patch anticipates a successful review of D88688, which
fixes the function that maps each kind of real to its maximum
number of significant decimal digits.)

Differential revision: https://reviews.llvm.org/D88752

3 years ago[libc++] Remove unused includes of Availability.h
Louis Dionne [Wed, 7 Oct 2020 22:03:09 +0000 (18:03 -0400)]
[libc++] Remove unused includes of Availability.h

Since ebaf1d5e2b, the macros defined in <Availability.h> are not used
anymore.

3 years agoFix a macOS build break caused by 3dfb94986170.
Jim Ingham [Wed, 7 Oct 2020 22:00:08 +0000 (15:00 -0700)]
Fix a macOS build break caused by 3dfb94986170.

3 years ago[M680x0] Add google/benchmark's CycleTimer support for M68K
Min-Yih Hsu [Tue, 6 Oct 2020 03:24:33 +0000 (20:24 -0700)]
[M680x0] Add google/benchmark's CycleTimer support for M68K

This is a cherrypick of the upstream fix commit ffe1342 onto
`llvm/utils/benchmark` and `libcxx/utils/google-benchmark`.
This adds CycleTimer implementation for M680x0, which simply
uses `gettimeofday` same as MIPS.

Differential Review: https://reviews.llvm.org/D88868

3 years ago[NFC][regalloc] Use MCRegister instead of unsigned in InterferenceCache
Mircea Trofin [Tue, 6 Oct 2020 21:38:41 +0000 (14:38 -0700)]
[NFC][regalloc] Use MCRegister instead of unsigned in InterferenceCache

Also changed users of APIs.

Differential Revision: https://reviews.llvm.org/D88930