platform/upstream/llvm.git
2 years ago[LinkerWrapper] Fix linker-wrapper not working with host-LTO
Joseph Huber [Wed, 13 Jul 2022 16:31:29 +0000 (12:31 -0400)]
[LinkerWrapper] Fix linker-wrapper not working with host-LTO

2 years agolowerParallel is also called on unit-size, one-sided reduction dims
Benoit Jacob [Mon, 4 Jul 2022 20:25:24 +0000 (20:25 +0000)]
lowerParallel is also called on unit-size, one-sided reduction dims

See: https://gist.github.com/bjacob/d8be8ec7e70ed0be4b3a5794ced2a7e8

Differential Revision: https://reviews.llvm.org/D129096

2 years agoRevert "[clang] Implement ElaboratedType sugaring for types written bare"
Jonas Devlieghere [Wed, 13 Jul 2022 16:11:45 +0000 (09:11 -0700)]
Revert "[clang] Implement ElaboratedType sugaring for types written bare"

This reverts commit bdc6974f92304f4ed542241b9b89ba58ba6b20aa because it
breaks all the LLDB tests that import the std module.

  import-std-module/array.TestArrayFromStdModule.py
  import-std-module/deque-basic.TestDequeFromStdModule.py
  import-std-module/deque-dbg-info-content.TestDbgInfoContentDequeFromStdModule.py
  import-std-module/forward_list.TestForwardListFromStdModule.py
  import-std-module/forward_list-dbg-info-content.TestDbgInfoContentForwardListFromStdModule.py
  import-std-module/list.TestListFromStdModule.py
  import-std-module/list-dbg-info-content.TestDbgInfoContentListFromStdModule.py
  import-std-module/queue.TestQueueFromStdModule.py
  import-std-module/stack.TestStackFromStdModule.py
  import-std-module/vector.TestVectorFromStdModule.py
  import-std-module/vector-bool.TestVectorBoolFromStdModule.py
  import-std-module/vector-dbg-info-content.TestDbgInfoContentVectorFromStdModule.py
  import-std-module/vector-of-vectors.TestVectorOfVectorsFromStdModule.py

https://green.lab.llvm.org/green/view/LLDB/job/lldb-cmake/45301/

2 years ago[llvm-reduce] Fix crash when reducing integer vectors to 1
Fraser Cormack [Wed, 13 Jul 2022 10:10:41 +0000 (11:10 +0100)]
[llvm-reduce] Fix crash when reducing integer vectors to 1

Integer vectors were previously ignored when reducing operands. When
6b8bd0f72 introduced support for reducing floating-point
scalars/vectors, the vector case was written to only handle
floating-point values. It would crash when creating an invalid
ConstantFP from the integer element type.

Instead of reinstating the old integer vector behaviour, we might as
well reduce integer vectors to all-one splats.

A couple of existing tests has also been renamed from "remove" to
"reduce" to better reflect the deltas they test.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D129629

2 years ago[mlir] Plumb through default attribute populate for extensible dialect.
Jacques Pienaar [Wed, 13 Jul 2022 16:05:04 +0000 (09:05 -0700)]
[mlir] Plumb through default attribute populate for extensible dialect.

2 years agoUpdate sanitize_* IR documentation.
Mitch Phillips [Wed, 13 Jul 2022 15:39:35 +0000 (08:39 -0700)]
Update sanitize_* IR documentation.

sanitize_none was never actually committed, and should be removed.

no_sanitize_memtag is to be removed in D128950.

sanitize_memtag is new in D128950.

Also update the comments on other no_sanitize_* to indicate that they're
impacted by the sanitizer ignorelist and the global-disable attribute.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D129410

2 years agoAdd missing sanitizer metadata plumbing from CFE.
Mitch Phillips [Wed, 13 Jul 2022 15:39:31 +0000 (08:39 -0700)]
Add missing sanitizer metadata plumbing from CFE.

clang misses attaching sanitizer metadata for external globals.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D129492

2 years agoRemove 'no_sanitize_memtag'. Add 'sanitize_memtag'.
Mitch Phillips [Wed, 13 Jul 2022 15:39:26 +0000 (08:39 -0700)]
Remove 'no_sanitize_memtag'. Add 'sanitize_memtag'.

For MTE globals, we should have clang emit the attribute for all GV's
that it creates, and then use that in the upcoming AArch64 global
tagging IR pass. We need a positive attribute for this sanitizer (rather
than implicit sanitization of all globals) because it needs to interact
with other parts of LLVM, including:

  1. Suppressing certain global optimisations (like merging),
  2. Emitting extra directives by the ASM writer, and
  3. Putting extra information in the symbol table entries.

While this does technically make the LLVM IR / bitcode format
non-backwards-compatible, nobody should have used this attribute yet,
because it's a no-op.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D128950

2 years ago[libc] Reset rounding mode after fsetround tests
Alex Brachet [Wed, 13 Jul 2022 15:42:47 +0000 (15:42 +0000)]
[libc] Reset rounding mode after fsetround tests

Differential Revision: https://reviews.llvm.org/D129619

2 years ago[SystemZ] Enable `-mtune=` option in clang.
Kai Nacke [Wed, 13 Jul 2022 14:08:44 +0000 (10:08 -0400)]
[SystemZ] Enable `-mtune=` option in clang.

https://reviews.llvm.org/D128910 enabled handling of
attribute "tune-cpu" in LLVM. This PR now enables
option `-mtune` in clang, which then generates the
new attribute.

Reviewed By: uweigand

Differential Revision: https://reviews.llvm.org/D129562

2 years ago[libc++][format] Improves parsing speed.
Mark de Wever [Sat, 9 Jul 2022 14:14:40 +0000 (16:14 +0200)]
[libc++][format] Improves parsing speed.

A format string like "{}" is quite common. In this case avoid parsing
the format-spec when it's not present. Before the parsing was always
called, therefore some refactoring is done to make sure the formatters
work properly when their parse member isn't called.

From the wording it's not entirely clear whether this optimization is
allowed

[tab:formatter]
```
  and the range [pc.begin(), pc.end()) from the last call to f.parse(pc).
```
Implies there's always a call to `f.parse` even when the format-spec
isn't present. Therefore this optimization isn't done for handle
classes; it's unclear whether that would break user defined formatters.

The improvements give a small reduciton is code size:
 719408   12472     488  732368   b2cd0 before
 718824   12472     488  731784   b2a88 after

The performance benefits when not using a format-spec are:

```
Comparing ./formatter_int.libcxx.out-baseline to ./formatter_int.libcxx.out
Benchmark                                                               Time             CPU      Time Old      Time New       CPU Old       CPU New
----------------------------------------------------------------------------------------------------------------------------------------------------
BM_Basic<uint32_t>                                                   -0.0688         -0.0687            67            62            67            62
BM_Basic<int32_t>                                                    -0.1105         -0.1107            73            65            73            65
BM_Basic<uint64_t>                                                   -0.1053         -0.1049            95            85            95            85
BM_Basic<int64_t>                                                    -0.0889         -0.0888            93            85            93            85
BM_BasicLow<__uint128_t>                                             -0.0655         -0.0655            96            90            96            90
BM_BasicLow<__int128_t>                                              -0.0693         -0.0694            97            90            97            90
BM_Basic<__uint128_t>                                                -0.0359         -0.0359           256           247           256           247
BM_Basic<__int128_t>                                                 -0.0414         -0.0414           239           229           239           229
```

For the cases where a format-spec is used the results remain similar,
some are faster some are slower, differing per run.

Reviewed By: ldionne, #libc

Differential Revision: https://reviews.llvm.org/D129426

2 years ago[DAGCombine] fold (urem x, (lshr pow2, y)) -> (and x, (add (lshr pow2, y), -1))
Philip Reames [Wed, 13 Jul 2022 00:22:55 +0000 (17:22 -0700)]
[DAGCombine] fold (urem x, (lshr pow2, y)) -> (and x, (add (lshr pow2, y), -1))

We have the same fold in InstCombine - though implemented via OrZero flag on isKnownToBePowerOfTwo. The reasoning here is that either a) the result of the lshr is a power-of-two, or b) we have a div-by-zero triggering UB which we can ignore.

Differential Revision: https://reviews.llvm.org/D129606

2 years ago[Flang] Fix path strings in CreateFIRLangRef.py
Dylan Fleming [Wed, 13 Jul 2022 14:20:59 +0000 (14:20 +0000)]
[Flang] Fix path strings in CreateFIRLangRef.py

In D129186, CreateFIRLangRef.py was created to help fix
formatting problems with FIRLangRef.md.

However, due to an error while rebasing, the last edit was lost,
as such the current path variables are Unix-style.

This patch addresses what was discussed in the previous patch and
now uses os.path.join instead.

Differential Revision: https://reviews.llvm.org/D129644

2 years ago[InstCombine] Enable strtol folding with nonnull endptr
Martin Sebor [Wed, 13 Jul 2022 15:18:00 +0000 (09:18 -0600)]
[InstCombine] Enable strtol folding with nonnull endptr

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D129593

2 years ago[libc++][chrono] Adds operator<=> for day.
Mark de Wever [Sun, 26 Jun 2022 08:58:02 +0000 (10:58 +0200)]
[libc++][chrono] Adds operator<=> for day.

Since the calendar classes were introduced in C++20 there's no need to
keep the old comparison operators.

This commit does the day calender class, the other calendar classes will
be in a followup commit.

Implements parts of:
- P1614R2 The mothership has landed

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D128603

2 years ago[clangd] Enable designator inlay hints by default.
Sam McCall [Tue, 12 Jul 2022 21:08:17 +0000 (23:08 +0200)]
[clangd] Enable designator inlay hints by default.

Differential Revision: https://reviews.llvm.org/D129595

2 years ago[SCCP] Fix typo in previous commit
Nikita Popov [Wed, 13 Jul 2022 14:22:40 +0000 (16:22 +0200)]
[SCCP] Fix typo in previous commit

Ooops, I tested a build from the wrong checkout.

2 years ago[SCCP] Avoid ConstantExpr::get() call
Nikita Popov [Wed, 13 Jul 2022 14:20:34 +0000 (16:20 +0200)]
[SCCP] Avoid ConstantExpr::get() call

Use ConstantFoldUnaryOpOperand() API instead. This is in
preparation for removing fneg constant expressions.

2 years ago[TargetFolder] Use DL-aware folding for icmp
Nikita Popov [Wed, 13 Jul 2022 13:35:13 +0000 (15:35 +0200)]
[TargetFolder] Use DL-aware folding for icmp

The Fold() call was accidentally dropped in
138fcc5f7619b5f066b9529a41ed47695149c8df, though it doesn't seem
to make a difference in practice (no test changes).

2 years ago[IRBuilder] Migrate fneg to fold infrastructure
Nikita Popov [Wed, 13 Jul 2022 12:51:04 +0000 (14:51 +0200)]
[IRBuilder] Migrate fneg to fold infrastructure

Make use of a single FoldUnOpFMF() API, though in practice FNeg
is the only unary operation that exists.

This is likely NFC in practice, because users of InstSimplifyFolder
don't create fneg.

2 years ago[clang] Ignore DependentSizeArray in -Warray-parameter
serge-sans-paille [Wed, 13 Jul 2022 12:53:04 +0000 (14:53 +0200)]
[clang] Ignore DependentSizeArray in -Warray-parameter

Acknowledge we don't know how to handle those yet.

2 years ago[AArch64] Regenerate arm64-vshuffle.ll test checks
Simon Pilgrim [Wed, 13 Jul 2022 12:52:07 +0000 (13:52 +0100)]
[AArch64] Regenerate arm64-vshuffle.ll test checks

Not quite ready to use the update script, but can clean it up slightly so the diffs aren't so great.

2 years ago[AArch64] Regenerate arm64-vselect.ll test checks
Simon Pilgrim [Wed, 13 Jul 2022 12:50:30 +0000 (13:50 +0100)]
[AArch64] Regenerate arm64-vselect.ll test checks

The ushll -> sshll FIXME had been fixed long ago, but nobody noticed because the test wasn't checking for either.....

2 years ago[ARM] Regenerate select_xform.ll test checks
Simon Pilgrim [Wed, 13 Jul 2022 12:48:46 +0000 (13:48 +0100)]
[ARM] Regenerate select_xform.ll test checks

2 years ago[Fixed Point] Fix C++20 compilation error
Antonio Frighetto [Wed, 13 Jul 2022 12:36:04 +0000 (08:36 -0400)]
[Fixed Point] Fix C++20 compilation error

Due to how operator== changed after operator<=> landing in C++20
(error: use of overloaded operator '==' is ambiguous (with operand
types 'const llvm::APSInt' and 'const unsigned long')),
CheckIntPartMin/CheckIntPartMax interfaces are now leveraging
APSInt::compareValues.

Differential Revision: https://reviews.llvm.org/D129567

2 years agoRevert "Move instruction predicate verification to emitInstruction"
David Green [Wed, 13 Jul 2022 12:28:11 +0000 (13:28 +0100)]
Revert "Move instruction predicate verification to emitInstruction"

This reverts commit e2fb8c0f4b940e0285ee36c112469fa75d4b60ff as it does
not build for Release builds, and some buildbots are giving more warning
than I saw locally. Reverting to fix those issues.

2 years ago[IndVars][NFC] Make IVOperand parameter an instruction
Max Kazantsev [Wed, 13 Jul 2022 12:03:03 +0000 (19:03 +0700)]
[IndVars][NFC] Make IVOperand parameter an instruction

2 years ago[CodeGen] Keep track of decls that were deferred and have been emitted.
Jun Zhang [Wed, 13 Jul 2022 10:00:06 +0000 (18:00 +0800)]
[CodeGen] Keep track of decls that were deferred and have been emitted.

This patch adds a new field called EmittedDeferredDecls in CodeGenModule
that keeps track of decls that were deferred and have been emitted.

The intention of this patch is to solve issues in the incremental c++,
we'll lose info of decls that are lazily emitted when we undo their
usage.

See example below:

clang-repl> inline int foo() { return 42;}
clang-repl> int bar = foo();
clang-repl> %undo
clang-repl> int baz = foo();
JIT session error: Symbols not found: [ _Z3foov ]
error: Failed to materialize symbols: { (main, { baz, $.incr_module_2.inits.0,
orc_init_func.incr_module_2 }) }

Signed-off-by: Jun Zhang <jun@junz.org>
Differential Revision: https://reviews.llvm.org/D128782

2 years ago[clang][dataflow] Generate readable form of input and output of satisfiability checking.
Wei Yi Tee [Tue, 12 Jul 2022 18:38:52 +0000 (18:38 +0000)]
[clang][dataflow] Generate readable form of input and output of satisfiability checking.

Differential Revision: https://reviews.llvm.org/D129548

2 years ago[SCEV][NFC] Make getStrengthenedNoWrapFlagsFromBinOp return optional
Max Kazantsev [Wed, 13 Jul 2022 11:53:29 +0000 (18:53 +0700)]
[SCEV][NFC] Make getStrengthenedNoWrapFlagsFromBinOp return optional

2 years agoMove instruction predicate verification to emitInstruction
David Green [Wed, 13 Jul 2022 11:53:32 +0000 (12:53 +0100)]
Move instruction predicate verification to emitInstruction

D25618 added a method to verify the instruction predicates for an
emitted instruction, through verifyInstructionPredicates added into
<Target>MCCodeEmitter::encodeInstruction. This is a very useful idea,
but the implementation inside MCCodeEmitter made it only fire for object
files, not assembly which most of the llvm test suite uses.

This patch moves the code into the <Target>_MC::verifyInstructionPredicates
method, inside the InstrInfo.  The allows it to be called from other
places, such as in this patch where it is called from the
<Target>AsmPrinter::emitInstruction methods which should trigger for
both assembly and object files. It can also be called from other places
such as verifyInstruction, but that is not done here (it tends to catch
errors earlier, but in reality just shows all the mir tests that have
incorrect feature predicates). The interface was also simplified
slightly, moving computeAvailableFeatures into the function so that it
does not need to be called externally.

The ARM, AMDGPU (but not R600), AVR, Mips and X86 backends all currently
show errors in the test-suite, so have been disabled with FIXME
comments.

Differential Revision: https://reviews.llvm.org/D129506

2 years ago[BOLT][AArch64] Handle gold linker veneers
Vladislav Khmelevsky [Wed, 6 Jul 2022 21:01:33 +0000 (00:01 +0300)]
[BOLT][AArch64] Handle gold linker veneers

The gold linker veneers are written between functions without symbols,
so we to handle it specially in BOLT.

Vladislav Khmelevsky,
Advanced Software Technology Lab, Huawei

Differential Revision: https://reviews.llvm.org/D129260

2 years ago[LLDB] Fix TestConvenienceVariables.test AArch64/Windows
Muhammad Omair Javaid [Wed, 13 Jul 2022 11:44:19 +0000 (16:44 +0500)]
[LLDB] Fix TestConvenienceVariables.test AArch64/Windows

This patch fixes TestConvenienceVariables.test for AArch64 Windows.
Clang/LLD was unable to find printf apparently available as a macro
definition in stdio.h.

2 years agoRevert "[libc++] Implement ranges::find_end, ranges::search{, _n}"
Nikolas Klauser [Wed, 13 Jul 2022 11:41:25 +0000 (13:41 +0200)]
Revert "[libc++] Implement ranges::find_end, ranges::search{, _n}"

This reverts commit 76a76518507ccc59ccdad5b83f44dc8c3d9593c7.

2 years ago[clang][dataflow] Rename `Status` field in a `Solver::Result` struct to `SATCheckStatus`.
Wei Yi Tee [Tue, 12 Jul 2022 18:38:36 +0000 (18:38 +0000)]
[clang][dataflow] Rename `Status` field in a `Solver::Result` struct to `SATCheckStatus`.

Previously, `Status` was named after the enum type `Status` which caused the enum to be hidden by the non-type declaration of the `Status` field. This patch fixes this issue by using different names for the field and type.

Differential Revision: https://reviews.llvm.org/D129568

2 years ago[LLDB] Fix TestThreadAPI.py for AArch64/Windows
Muhammad Omair Javaid [Wed, 13 Jul 2022 11:28:25 +0000 (16:28 +0500)]
[LLDB] Fix TestThreadAPI.py for AArch64/Windows

This patch fixes TestThreadAPI for AArch64 windows by switching over to
PDB debug info instead of DWARF. This is needed to step over library
functions like printf as there is debug info mismatch between DWARF and
PDB. PDB DWARF interworking is not fully supported by LLDB at the
moment.

2 years ago[mlir][Linalg] Retire TestLinalgCodegenStrategy pass.
Nicolas Vasilache [Wed, 13 Jul 2022 10:14:58 +0000 (03:14 -0700)]
[mlir][Linalg] Retire TestLinalgCodegenStrategy pass.

This pass tests patterns that are already tested elsewhere by applying them in a semi-targeted
fashion using anchor function and op names.

From now on, targeted tests should use the transform dialect interpreter.

Differential Revision: https://reviews.llvm.org/D129627

2 years ago[LLDB] XFail TestLoadUnload.test_static_init_during_load AArch64/Windows
Muhammad Omair Javaid [Wed, 13 Jul 2022 11:15:11 +0000 (16:15 +0500)]
[LLDB] XFail TestLoadUnload.test_static_init_during_load AArch64/Windows

This patch fixes marks TestLoadUnload.test_static_init_during_load as
xfail for AArch64 windows. It is failing similar to Linux and already
marked xfail for linux.

2 years ago[libc++] Implement ranges::find_end, ranges::search{, _n}
Nikolas Klauser [Tue, 12 Jul 2022 19:28:40 +0000 (21:28 +0200)]
[libc++] Implement ranges::find_end, ranges::search{, _n}

Reviewed By: var-const, #libc, huixie90

Spies: h-vetinari, huixie90, libcxx-commits, mgorny

Differential Revision: https://reviews.llvm.org/D124079

2 years ago[Test] Add test showing that we can make a check loop-invariant
Max Kazantsev [Wed, 13 Jul 2022 11:01:09 +0000 (18:01 +0700)]
[Test] Add test showing that we can make a check loop-invariant

2 years ago[LLDB] Fix pointers.test for AArch64/Windows
Muhammad Omair Javaid [Wed, 13 Jul 2022 10:52:33 +0000 (15:52 +0500)]
[LLDB] Fix pointers.test for AArch64/Windows

pointers.test started failing again for AArch64 windows after D125509
This patch fixes the test to make it pass on AArch64 windows again.

LLDB AArch64 Windows buildbot running at:
https://lab.llvm.org/staging/#/builders/207

2 years ago[ARM] Fix subtarget features for Thumb2 tests. NFC
David Green [Wed, 13 Jul 2022 10:42:21 +0000 (11:42 +0100)]
[ARM] Fix subtarget features for Thumb2 tests. NFC

These mir tests were using instructions that require feature predicates
that were not enabled.

2 years ago[gn build] Port c9666d2339e5
LLVM GN Syncbot [Wed, 13 Jul 2022 10:35:56 +0000 (10:35 +0000)]
[gn build] Port c9666d2339e5

2 years ago[clang][dataflow] Generate readable form of boolean values.
Wei Yi Tee [Tue, 12 Jul 2022 18:36:26 +0000 (18:36 +0000)]
[clang][dataflow] Generate readable form of boolean values.

Differential Revision: https://reviews.llvm.org/D129547

2 years ago[clang][dataflow] Refactor boolean creation as a test utility.
Wei Yi Tee [Tue, 12 Jul 2022 18:35:34 +0000 (18:35 +0000)]
[clang][dataflow] Refactor boolean creation as a test utility.

Differential Revision: https://reviews.llvm.org/D129546

2 years ago[lld-macho] Add LOH_ARM64_ADRP_LDR_GOT_LDR optimization hint support
Daniel Bertalan [Sat, 9 Jul 2022 10:17:29 +0000 (12:17 +0200)]
[lld-macho] Add LOH_ARM64_ADRP_LDR_GOT_LDR optimization hint support

This hint instructs the linker to relax a GOT-indirect load.
If the referenced symbol is external and its GOT entry is within +/- 1
MiB, the GOT entry can be loaded with a single literal ldr instruction.
If the referenced symbol is local, its address may be loaded directly if
it's close enough, or with an adr(p) + ldr pair if it's not.

This type accounts for more than half of all LOHs in chromium_framework.

This commit moves the eligibility checks into helper functions to
improve the readability of the LOH processing code. Ho functional
changes are intended to the previously implemented LOH types.

Differential Revision: https://reviews.llvm.org/D129427

2 years ago[clang][dataflow] Refactor boolean creation as a test utility.
Wei Yi Tee [Tue, 12 Jul 2022 18:47:18 +0000 (18:47 +0000)]
[clang][dataflow] Refactor boolean creation as a test utility.

Differential Revision: https://reviews.llvm.org/D129546

2 years ago[InstCombine][SVE] Bail out of isSafeToLoadUnconditionally for scalable types
Peter Waller [Mon, 11 Jul 2022 10:56:15 +0000 (10:56 +0000)]
[InstCombine][SVE] Bail out of isSafeToLoadUnconditionally for scalable types

`isSafeToLoadUnconditionally` currently assumes sized types. Bail out for now.
This fixes a TypeSize warning reachable from instcombine via (load (select
cond, ptr, ptr)).

Differential Revision: https://reviews.llvm.org/D129477

2 years ago[Test] Fix bailout blocks
Max Kazantsev [Wed, 13 Jul 2022 10:02:02 +0000 (17:02 +0700)]
[Test] Fix bailout blocks

2 years ago[PowerPC] Regenerate pr35402.ll test checks
Simon Pilgrim [Wed, 13 Jul 2022 10:01:26 +0000 (11:01 +0100)]
[PowerPC] Regenerate pr35402.ll test checks

2 years ago[lldb] Fix build with GCC 9 after "[ADT] Use Empty Base Optimization for Allocators"
Martin Storsjö [Wed, 13 Jul 2022 09:53:31 +0000 (12:53 +0300)]
[lldb] Fix build with GCC 9 after "[ADT] Use Empty Base Optimization for Allocators"

This fixes this compilation error, after
a565509308f9372c4de1c4c32afde461a42e81c8:

In file included from ../tools/lldb/include/lldb/Host/Host.h:14,
                 from ../tools/lldb/source/Host/common/File.cpp:28:
../tools/lldb/include/lldb/Utility/Environment.h: In copy constructor â€˜lldb_private::Environment::Environment(const lldb_private::Environment&)’:
../tools/lldb/include/lldb/Utility/Environment.h:60:49: error: call of overloaded â€˜StringMap(const lldb_private::Environment&)’ is ambiguous
   60 |   Environment(const Environment &RHS) : Base(RHS) {}
      |                                                 ^
In file included from ../include/llvm/Support/YAMLTraits.h:16,
                 from ../tools/lldb/include/lldb/Utility/ConstString.h:15,
                 from ../tools/lldb/include/lldb/Utility/FileSpec.h:15,
                 from ../tools/lldb/include/lldb/Host/FileSystem.h:14,
                 from ../tools/lldb/source/Host/common/File.cpp:27:
../include/llvm/ADT/StringMap.h:137:3: note: candidate: â€˜llvm::StringMap<ValueTy, AllocatorTy>::StringMap(const llvm::StringMap<ValueTy, AllocatorTy>&) [with ValueTy = std::__cxx11::basic_string<char>; AllocatorTy = llvm::MallocAllocator]’
  137 |   StringMap(const StringMap &RHS)
      |   ^~~~~~~~~
../include/llvm/ADT/StringMap.h:122:12: note: candidate: â€˜llvm::StringMap<ValueTy, AllocatorTy>::StringMap(AllocatorTy) [with ValueTy = std::__cxx11::basic_string<char>; AllocatorTy = llvm::MallocAllocator]’
  122 |   explicit StringMap(AllocatorTy A)
      |            ^~~~~~~~~

2 years ago[X86] Regenerate fp_constant_op.ll test checks
Simon Pilgrim [Wed, 13 Jul 2022 09:49:56 +0000 (10:49 +0100)]
[X86] Regenerate fp_constant_op.ll test checks

2 years ago[LAA] Precommit some extra tests for forked pointers
Graham Hunter [Tue, 12 Jul 2022 14:13:46 +0000 (15:13 +0100)]
[LAA] Precommit some extra tests for forked pointers

  * Converted tests to use opaque pointers
  * Added suggested test for inbounds GEP
  * Added a test for forks on both the base and offset terms of a GEP
  * Added a test for a select of a select
  * Added a test for a GEP with >2 operands
  * Added a test for vector GEPs

2 years agoUse has_value instead of hasValue (NFC)
Kazu Hirata [Wed, 13 Jul 2022 08:58:03 +0000 (01:58 -0700)]
Use has_value instead of hasValue (NFC)

2 years ago[AArch64][SVE] Prefer SIMD&FP variant of clast[ab]
Cullen Rhodes [Fri, 8 Jul 2022 15:18:27 +0000 (15:18 +0000)]
[AArch64][SVE] Prefer SIMD&FP variant of clast[ab]

The scalar variant with GPR source/dest has considerably higher latency
than the SIMD&FP scalar variant across a variety of micro-architectures:

  Core           Scalar    SIMD&FP
  --------------------------------
  Neoverse V1     9 cyc      3 cyc
  Neoverse N2     8 cyc      3 cyc
  Cortex A510     8 cyc      4 cyc
  A64FX          29 cyc      6 cyc

2 years ago[AsmParser] Fix a warning
Kazu Hirata [Wed, 13 Jul 2022 08:52:53 +0000 (01:52 -0700)]
[AsmParser] Fix a warning

This patch fixes:

  llvm/lib/AsmParser/LLParser.cpp:466:34: error: moving a temporary
  object prevents copy elision [-Werror,-Wpessimizing-move]

2 years ago[LoopVectorize] Ensure the VPReductionRecipe is placed after all it's inputs
David Sherwood [Mon, 11 Jul 2022 14:31:37 +0000 (15:31 +0100)]
[LoopVectorize] Ensure the VPReductionRecipe is placed after all it's inputs

When vectorising ordered reductions we call a function
LoopVectorizationPlanner::adjustRecipesForReductions to replace the
existing VPWidenRecipe for the fadd instruction with a new
VPReductionRecipe. We attempt to insert the new recipe in the same
place, but this is wrong because createBlockInMask may have
generated new recipes that VPReductionRecipe now depends upon. I
have changed the insertion code to append the recipe to the
VPBasicBlock instead.

Added a new RUN with tail-folding enabled to the existing test:

  Transforms/LoopVectorize/AArch64/scalable-strict-fadd.ll

Differential Revision: https://reviews.llvm.org/D129550

2 years ago[IndVars] Simplify instructions after replacing header phi with preheader value
Nikita Popov [Thu, 7 Jul 2022 15:04:37 +0000 (17:04 +0200)]
[IndVars] Simplify instructions after replacing header phi with preheader value

After replacing a loop phi with the preheader value, it's usually
possible to simplify some of the using instructions, so do that as
part of replaceLoopPHINodesWithPreheaderValues().

Doing this as part of IndVars is valuable, because it may make GEPs
in the loop have constant offsets and allow the following SROA run
to succeed (as demonstrated in the PhaseOrdering test).

Differential Revision: https://reviews.llvm.org/D129293

2 years ago[AsmParser] Report invalid data layout more gracefully
Nikita Popov [Wed, 13 Jul 2022 08:15:51 +0000 (10:15 +0200)]
[AsmParser] Report invalid data layout more gracefully

Report this as a normal LLParser error, rather than a fatal error.

2 years ago[Clang] Add a warning on invalid UTF-8 in comments.
Corentin Jabot [Fri, 17 Jun 2022 14:23:41 +0000 (16:23 +0200)]
[Clang] Add a warning on invalid UTF-8 in comments.

Introduce an off-by default `-Winvalid-utf8` warning
that detects invalid UTF-8 code units sequences in comments.

Invalid UTF-8 in other places is already diagnosed,
as that cannot appear in identifiers and other grammar constructs.

The warning is off by default as its likely to be somewhat disruptive
otherwise.

This warning allows clang to conform to the yet-to be approved WG21
"P2295R5 Support for UTF-8 as a portable source file encoding"
paper.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D128059

2 years ago[AsmParser] Use toString() (NFC)
Nikita Popov [Wed, 13 Jul 2022 08:04:06 +0000 (10:04 +0200)]
[AsmParser] Use toString() (NFC)

2 years ago[RISCV] Add early-exit to RVV stack computation. NFCI.
Fraser Cormack [Wed, 13 Jul 2022 05:41:27 +0000 (06:41 +0100)]
[RISCV] Add early-exit to RVV stack computation. NFCI.

This patch was split off from D126465, where an early-exit is necessary
as it checks the VLEN and that asserts that V instructions are present.

Since this makes logical sense on its own, I think it's worth landing
regardless of D126465.

Reviewed By: kito-cheng

Differential Revision: https://reviews.llvm.org/D129617

2 years ago[mlir] Use has_value instead of hasValue (NFC)
Kazu Hirata [Wed, 13 Jul 2022 07:57:02 +0000 (00:57 -0700)]
[mlir] Use has_value instead of hasValue (NFC)

2 years ago[IndVars] Call replaceLoopPHINodesWithPreheaderValues() for already constant exits
Nikita Popov [Wed, 6 Jul 2022 15:08:05 +0000 (17:08 +0200)]
[IndVars] Call replaceLoopPHINodesWithPreheaderValues() for already constant exits

Currently we only call replaceLoopPHINodesWithPreheaderValues() if
optimizeLoopExits() replaces the exit with an unconditional exit.
However, it is very common that this already happens as part of
eliminateIVComparison(), in which case we're leaving behind the
dead header phi.

Tweak the early bailout for already-constant exits to also call
replaceLoopPHINodesWithPreheaderValues().

Differential Revision: https://reviews.llvm.org/D129214

2 years ago[AIX] follow-up of D124654.
esmeyi [Wed, 13 Jul 2022 07:39:08 +0000 (03:39 -0400)]
[AIX] follow-up of D124654.
Report an error when alias symbols are not emitted all.

2 years ago[ELF][RISCV] Use unshifted value for overflow check
Fangrui Song [Wed, 13 Jul 2022 07:28:29 +0000 (00:28 -0700)]
[ELF][RISCV] Use unshifted value for overflow check

The unshifted value indicates an displacement in bytes which is more meaningful.

2 years ago[LoongArch] Add codegen support for atomic fence, atomic load and atomic store
gonglingqin [Wed, 13 Jul 2022 07:14:09 +0000 (15:14 +0800)]
[LoongArch] Add codegen support for atomic fence, atomic load and atomic store

Differential Revision: https://reviews.llvm.org/D128901

2 years ago[LoongArch] Add codegen support for converting between unsigned integer and floating...
gonglingqin [Wed, 13 Jul 2022 07:11:23 +0000 (15:11 +0800)]
[LoongArch] Add codegen support for converting between unsigned integer and floating-point

Differential Revision: https://reviews.llvm.org/D128900

2 years ago[LoongArch] Add codegen support for fpround, fpextend and converting between signed...
gonglingqin [Wed, 13 Jul 2022 07:03:12 +0000 (15:03 +0800)]
[LoongArch] Add codegen support for fpround, fpextend and converting between signed integer and floating-point

Differential Revision: https://reviews.llvm.org/D128899

2 years ago[InstCombine] add tests for xor_of_icmps. nfc
Chenbing Zheng [Wed, 13 Jul 2022 07:18:48 +0000 (15:18 +0800)]
[InstCombine] add tests for xor_of_icmps. nfc

2 years ago[ELF] Fix displacement computation for intra-section branch after D127611
Fangrui Song [Wed, 13 Jul 2022 07:17:17 +0000 (00:17 -0700)]
[ELF] Fix displacement computation for intra-section branch after D127611

D127611 computed st_value is inaccurate:

* For a backward branch, the destination address may be wrong if there is no
  relaxable relocation between it and the current location due to `if (remove)`.
  We may incorrectly relax a branch to c.j which ends up an overflow.
* For a forward branch, the destination address may be overestimated
  and lose relaxation opportunities.

To fix the issues,

* Don't reset st_value to the original value.
* Save the st_value delta from the previous iteration into valueDelta, and use
  `sa[0].d->value -= delta - valueDelta.find(sa[0].d)->second`.

2 years ago[mlir] Allow empty lists for DenseArrayAttr.
Adrian Kuegel [Wed, 13 Jul 2022 06:52:38 +0000 (08:52 +0200)]
[mlir] Allow empty lists for DenseArrayAttr.

Differential Revision: https://reviews.llvm.org/D129552

2 years ago[libc][NFC] Move thread platform data pointer to thread attributes.
Siva Chandra Reddy [Wed, 13 Jul 2022 07:07:56 +0000 (07:07 +0000)]
[libc][NFC] Move thread platform data pointer to thread attributes.

Along the way, added constexpr constructors to the Thread data
structures.

2 years ago[RISCV][test] Add test of binop followed by extractelement.
jacquesguan [Tue, 12 Jul 2022 07:57:28 +0000 (15:57 +0800)]
[RISCV][test] Add test of binop followed by extractelement.

Reviewed By: reames

Differential Revision: https://reviews.llvm.org/D129544

2 years ago[RISCV] Add scheduling resources for vector segment instructions.
Monk Chiang [Thu, 30 Jun 2022 06:17:57 +0000 (23:17 -0700)]
[RISCV] Add scheduling resources for vector segment instructions.

Add scheduling resources for vector segment instructions

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D128886

2 years ago[clang, clang-tools-extra] Use has_value instead of hasValue (NFC)
Kazu Hirata [Wed, 13 Jul 2022 05:47:41 +0000 (22:47 -0700)]
[clang, clang-tools-extra] Use has_value instead of hasValue (NFC)

2 years ago[llvm] Use has_value instead of hasValue (NFC)
Kazu Hirata [Wed, 13 Jul 2022 05:25:42 +0000 (22:25 -0700)]
[llvm] Use has_value instead of hasValue (NFC)

2 years ago[ELF][test] Remove unneeded --mcpu=future from llvm-objdump commands
Fangrui Song [Wed, 13 Jul 2022 04:08:52 +0000 (21:08 -0700)]
[ELF][test] Remove unneeded --mcpu=future from llvm-objdump commands

2 years ago[ELF][test] Remove unneeded --mcpu=pwr10 from llvm-objdump commands
Fangrui Song [Wed, 13 Jul 2022 04:07:45 +0000 (21:07 -0700)]
[ELF][test] Remove unneeded --mcpu=pwr10 from llvm-objdump commands

llvm-objdump has defaulted to decode all known instructions for PPC64.

2 years ago[mlir][sparse]Replace redundant indices checks in sparse_tensor.conversion
Anlun Xu [Wed, 6 Jul 2022 23:03:33 +0000 (16:03 -0700)]
[mlir][sparse]Replace redundant indices checks in sparse_tensor.conversion

Replace some redundant indices checks with the correct checks

Reviewed By: aartbik

Differential Revision: https://reviews.llvm.org/D129101

2 years agoRe-land "[dsymutil] Account for DW_OP_convert being CU relative"
Jonas Devlieghere [Tue, 12 Jul 2022 21:18:19 +0000 (14:18 -0700)]
Re-land "[dsymutil] Account for DW_OP_convert being CU relative"

Currently, dsymutil treats the DW_OP_convert operand as absolute instead
of CU relative, as described by in the DWARFv5 spec, 2.5.1.6:

  "[DW_OP_convert] takes one operand, which is an unsigned LEB128 integer
  that represents the offset of a debugging information entry in the current
  compilation unit"

This patch makes dsymutil correctly treat the offset as CU relative,
preventing a crash when there are multiple compilation units.

Big thanks to Akira Hatanaka for figuring out this issue and providing
both a reduced test case and a proposed fix.

2 years ago[bazel] add missing gmock dependency to //clang/unittests:format_tests
Jorge Gorbe Moya [Wed, 13 Jul 2022 01:13:17 +0000 (18:13 -0700)]
[bazel] add missing gmock dependency to //clang/unittests:format_tests

2 years ago[lib++][ranges][NFC] Refactor `iterator_operations.h` to use tags.
Konstantin Varlamov [Wed, 13 Jul 2022 00:52:14 +0000 (17:52 -0700)]
[lib++][ranges][NFC] Refactor `iterator_operations.h` to use tags.

Change the mechanism in `iterator_operations.h` to pass around a generic
policy tag indicating whether an internal function is being invoked from
a "classic" STL algorithm or a ranges algorithm. `IterOps` is now
a template class specialized on the policy tag.

The advantage is that this mechanism is more generic and allows defining
arbitrary conditions in a clean manner.

Also add a few more iterator functions to `IterOps`.

Differential Revision: https://reviews.llvm.org/D129390

2 years ago[NFCI] Fix unused variable warning with asserts off in clang/lib/Sema/TypeLocBuilder.cpp
Jorge Gorbe Moya [Wed, 13 Jul 2022 00:40:41 +0000 (17:40 -0700)]
[NFCI] Fix unused variable warning with asserts off in clang/lib/Sema/TypeLocBuilder.cpp

2 years ago[clang] Implement ElaboratedType sugaring for types written bare
Matheus Izvekov [Mon, 11 Oct 2021 16:15:36 +0000 (18:15 +0200)]
[clang] Implement ElaboratedType sugaring for types written bare

Without this patch, clang will not wrap in an ElaboratedType node types written
without a keyword and nested name qualifier, which goes against the intent that
we should produce an AST which retains enough details to recover how things are
written.

The lack of this sugar is incompatible with the intent of the type printer
default policy, which is to print types as written, but to fall back and print
them fully qualified when they are desugared.

An ElaboratedTypeLoc without keyword / NNS uses no storage by itself, but still
requires pointer alignment due to pre-existing bug in the TypeLoc buffer
handling.

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>
Differential Revision: https://reviews.llvm.org/D112374

2 years ago[NFCI] Fix unused variable/function warnings in MacroCallReconstructorTest.cpp when...
Jorge Gorbe Moya [Tue, 12 Jul 2022 23:46:07 +0000 (16:46 -0700)]
[NFCI] Fix unused variable/function warnings in MacroCallReconstructorTest.cpp when asserts are disabled.

2 years ago[LinkerWrapper] Tweak save-temps output name
Joseph Huber [Tue, 12 Jul 2022 23:40:54 +0000 (19:40 -0400)]
[LinkerWrapper] Tweak save-temps output name

Summary:
A previous patch added the Task to the output filename when doing
`save-temps` the majority of cases there is only a single task so we
only add the task explicitly to differentiate it from the first one.

2 years agoRevert "[dsymutil] Account for DW_OP_convert being CU relative"
Nico Weber [Tue, 12 Jul 2022 23:36:21 +0000 (19:36 -0400)]
Revert "[dsymutil] Account for DW_OP_convert being CU relative"

This reverts commit 7f3000fa8b321f7fae169a615734de74a737b5d4.
Breaks tests on Windows, see commits on https://reviews.llvm.org/rG7f3000fa

2 years ago[trace] Avoid a crash in the dumper when disassembling fails
Walter Erquinigo [Tue, 12 Jul 2022 19:41:30 +0000 (12:41 -0700)]
[trace] Avoid a crash in the dumper when disassembling fails

In rare situations, disassemblying would fail that produce an invalid
InstructionSP object. We need to check that it's valid before using.

With this change, now the dumper doesn't crash with dumping instructions of
ioctl. In fact, it now dumps this output

 {
    "id": 6135,
    "loadAddress": "0x7f4bfe5c7515",
    "module": "libc.so.6",
    "symbol": "ioctl",
    "source": "glibc/2.34/src/glibc-2.34/sysdeps/unix/syscall-template.S",
    "line": 120,
    "column": 0
 }

Anyway, we need to investigate why the diassembler failed disassembling that
instruction. From over 2B instructions I was disassembling today, just this
one failed, so this could be a bug in LLVM's core disassembler.

Differential Revision: https://reviews.llvm.org/D129588

2 years ago[trace] Add a flag to the decoder to output the instruction type
Walter Erquinigo [Tue, 12 Jul 2022 23:09:03 +0000 (16:09 -0700)]
[trace] Add a flag to the decoder to output the instruction type

To build complex binding upon instruction trace, additional metadata 'instruction type' is needed.

This diff has followings:
 - Add a flag -k  / --kind for instruction dump
 - Remove SetGranularity and SetIgnoreErros from Trace cursor

Sample output:

```
(lldb) thread trace dump instruction -k
thread #1: tid = 3198805
  libc.so.6`_IO_puts + 356
    2107: 0x00007ffff7163594 (    return)     retq
    2106: 0x00007ffff7163592 (     other)     popq   %r13
    2105: 0x00007ffff7163590 (     other)     popq   %r12
    2104: 0x00007ffff716358f (     other)     popq   %rbp
    2103: 0x00007ffff716358e (     other)     popq   %rbx
    2102: 0x00007ffff716358c (     other)     movl   %ebx, %eax
    2101: 0x00007ffff7163588 (     other)     addq   $0x8, %rsp
    2100: 0x00007ffff7163570 ( cond jump)     je     0x89588                   ; <+344>
    2099: 0x00007ffff716356e (     other)     decl   (%rdx)
    2098: 0x00007ffff7163565 ( cond jump)     je     0x8956e                   ; <+318>
    2097: 0x00007ffff716355e (     other)     cmpl   $0x0, 0x33c02b(%rip)      ; __libc_multiple_threads
    2096: 0x00007ffff7163556 (     other)     movq   $0x0, 0x8(%rdx)
    2095: 0x00007ffff7163554 ( cond jump)     jne    0x89588                   ; <+344>
    2094: 0x00007ffff7163550 (     other)     subl   $0x1, 0x4(%rdx)
    2093: 0x00007ffff7163549 (     other)     movq   0x88(%rbp), %rdx
    2092: 0x00007ffff7163547 ( cond jump)     jne    0x89588                   ; <+344>
    2091: 0x00007ffff7163540 (     other)     testl  $0x8000, (%rbp)           ; imm = 0x8000
    2090: 0x00007ffff716353c (     other)     cmovaq %rax, %rbx
    2089: 0x00007ffff7163535 (     other)     cmpq   $0x7fffffff, %rbx         ; imm = 0x7FFFFFFF
    2088: 0x00007ffff7163530 (     other)     movl   $0x7fffffff, %eax         ; imm = 0x7FFFFFFF
```

Reviewed By: wallace

Differential Revision: https://reviews.llvm.org/D128477

2 years ago[mlir][vector] Fix crash in vector.reduction canonicalization
Thomas Raoux [Tue, 12 Jul 2022 22:44:39 +0000 (22:44 +0000)]
[mlir][vector] Fix crash in vector.reduction canonicalization

since vector.reduce support accumulator in all the cases remove the
assert assuming old definition.

Differential Revision: https://reviews.llvm.org/D129602

2 years agoAdd coverage for missing (urem x, (lshr pow2, y)) -> (and x, (add (lshr pow2, y)...
Philip Reames [Tue, 12 Jul 2022 22:59:25 +0000 (15:59 -0700)]
Add coverage for missing (urem x, (lshr pow2, y)) -> (and x, (add (lshr pow2, y), -1)) transform

2 years ago[ADT] Use Empty Base Optimization for Allocators
Nathan James [Tue, 12 Jul 2022 22:57:03 +0000 (23:57 +0100)]
[ADT] Use Empty Base Optimization for Allocators

In D94439, BumpPtrAllocator changed its implementation to use an empty base optimization for the underlying allocator.
This patch builds on that by extending its functionality to more classes as well as enabling the underlying allocator to be a reference type, something not currently possible as you can't derive from a reference.

The main place this sees use is in StringMaps which often use the default MallocAllocator, yet have to pay the size of a pointer for no reason.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D129206

2 years ago{RISCV] Test coverage for improved lowering assuming vscale is pow-of-two
Philip Reames [Tue, 12 Jul 2022 22:40:17 +0000 (15:40 -0700)]
{RISCV] Test coverage for improved lowering assuming vscale is pow-of-two

2 years agoRevert "[Clang] Add a warning on invalid UTF-8 in comments."
Jonas Devlieghere [Tue, 12 Jul 2022 22:16:14 +0000 (15:16 -0700)]
Revert "[Clang] Add a warning on invalid UTF-8 in comments."

This reverts commit cc309721d20c8e544ae7a10a66735ccf4981a11c because it
breaks the following tests on GreenDragon:

  TestDataFormatterObjCCF.py
  TestDataFormatterObjCExpr.py
  TestDataFormatterObjCKVO.py
  TestDataFormatterObjCNSBundle.py
  TestDataFormatterObjCNSData.py
  TestDataFormatterObjCNSError.py
  TestDataFormatterObjCNSNumber.py
  TestDataFormatterObjCNSURL.py
  TestDataFormatterObjCPlain.py
  TestDataFormatterObjNSException.py

https://green.lab.llvm.org/green/view/LLDB/job/lldb-cmake/45288/

2 years ago[mlir][VectorToLLVM] Fix bug in lowering of vector.reduce fmax/fmin
Thomas Raoux [Tue, 12 Jul 2022 21:38:10 +0000 (21:38 +0000)]
[mlir][VectorToLLVM] Fix bug in lowering of vector.reduce fmax/fmin

The lowering of fmax/fmin reduce was ignoring the optional accumulator.

Differential Revision: https://reviews.llvm.org/D129597

2 years ago[dsymutil] Account for DW_OP_convert being CU relative
Jonas Devlieghere [Tue, 12 Jul 2022 21:18:19 +0000 (14:18 -0700)]
[dsymutil] Account for DW_OP_convert being CU relative

Currently, dsymutil treats the DW_OP_convert operand as absolute instead
of CU relative, as described by in the DWARFv5 spec, 2.5.1.6:

  "[DW_OP_convert] takes one operand, which is an unsigned LEB128 integer
  that represents the offset of a debugging information entry in the current
  compilation unit"

This patch makes dsymutil correctly treat the offset as CU relative,
preventing a crash when there are multiple compilation units.

Big thanks to Akira Hatanaka for figuring out this issue and providing
both a reduced test case and a proposed fix.

2 years ago[lld-macho][nfc] Change force-load.s test to actually test
Jez Ng [Tue, 12 Jul 2022 21:54:18 +0000 (17:54 -0400)]
[lld-macho][nfc] Change force-load.s test to actually test

I'd forgotten to change a copypasted line...

2 years agoRevert "[GISel] Unify use of getStackGuard"
Kai Nacke [Tue, 12 Jul 2022 21:00:43 +0000 (17:00 -0400)]
Revert "[GISel] Unify use of getStackGuard"

This reverts commit e60b4fb2b777118c0ff664a6347851df14fcf75b.

2 years ago[X86] Move isInRange(ArrayRef<int>) inside assert to fix NDEBUG builds. NFC.
Simon Pilgrim [Tue, 12 Jul 2022 20:51:01 +0000 (21:51 +0100)]
[X86] Move isInRange(ArrayRef<int>) inside assert to fix NDEBUG builds. NFC.

Fix unused static function warning introduced by D129207