platform/upstream/llvm.git
2 years ago[mlir][Vector] Add a vblendps-based impl for transpose8x8 (both intrin and inline_asm)
Nicolas Vasilache [Mon, 22 Nov 2021 10:22:37 +0000 (10:22 +0000)]
[mlir][Vector] Add a vblendps-based impl for transpose8x8 (both intrin and inline_asm)

This revision follows up on the conversation titled:

```[llvm-dev] Understanding and controlling some of the AVX shuffle emission paths```

The revision adds a vblendps-based implementation for transpose8x8 and further distinguishes between and intrinsics and an inline_asm implementation.

This results in roughly 20% fewer cycles as reported by llvm-mca:

After this revision (intrinsic version, resolves to virtually identical assembly as per the llvm-dev discussion, no vblendps instruction is emitted):
```
Iterations:        100
Instructions:      5900
Total Cycles:      2415
Total uOps:        7300

Dispatch Width:    6
uOps Per Cycle:    3.02
IPC:               2.44
Block RThroughput: 24.0

Cycles with backend pressure increase [ 89.90% ]
Throughput Bottlenecks:
  Resource Pressure       [ 89.65% ]
  - SKXPort1  [ 0.04% ]
  - SKXPort2  [ 12.42% ]
  - SKXPort3  [ 12.42% ]
  - SKXPort5  [ 89.52% ]
  Data Dependencies:      [ 37.06% ]
  - Register Dependencies [ 37.06% ]
  - Memory Dependencies   [ 0.00% ]
```

After this revision (inline_asm version, vblendps instructions are indeed emitted):
```
Iterations:        100
Instructions:      6300
Total Cycles:      2015
Total uOps:        7700

Dispatch Width:    6
uOps Per Cycle:    3.82
IPC:               3.13
Block RThroughput: 20.0

Cycles with backend pressure increase [ 83.47% ]
Throughput Bottlenecks:
  Resource Pressure       [ 83.18% ]
  - SKXPort0  [ 14.49% ]
  - SKXPort1  [ 14.54% ]
  - SKXPort2  [ 19.70% ]
  - SKXPort3  [ 19.70% ]
  - SKXPort5  [ 83.03% ]
  - SKXPort6  [ 14.49% ]
  Data Dependencies:      [ 39.75% ]
  - Register Dependencies [ 39.75% ]
  - Memory Dependencies   [ 0.00% ]
```

An accessible copy of the conversation is available [here](https://gist.github.com/nicolasvasilache/68c7f34012584b0e00f335bcb374ede0).

Reviewed By: ftynse, dcaballe

Differential Revision: https://reviews.llvm.org/D114335

2 years ago[BPI] Look-up tables for non-loop branches. NFC.
Sjoerd Meijer [Thu, 18 Nov 2021 14:08:37 +0000 (14:08 +0000)]
[BPI] Look-up tables for non-loop branches. NFC.

This adds and uses look-up tables for non-loop branch probabilities, which have
have probabilities directly encoded into the tables for the different condition
codes. Compared to having this logic inlined in different functions, as it used
to be the case, I think this is compacter and thus also easier to check/cross
reference. This also adds a test for pointer heuristics that was missing.

Differential Revision: https://reviews.llvm.org/D114009

2 years ago[MLIR][NFC] Simplex: remove repeated words in comment
Arjun P [Sun, 21 Nov 2021 19:55:25 +0000 (01:25 +0530)]
[MLIR][NFC] Simplex: remove repeated words in comment

2 years ago[LV] Pre-commit test for D111846
Diego Caballero [Mon, 22 Nov 2021 10:12:25 +0000 (10:12 +0000)]
[LV] Pre-commit test for D111846

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D112054

2 years ago[libc] Remove unused variable
Guillaume Chatelet [Mon, 22 Nov 2021 10:12:46 +0000 (10:12 +0000)]
[libc] Remove unused variable

2 years agoFix various problems found by fuzzing.
Manuel Klimek [Mon, 22 Nov 2021 08:07:57 +0000 (09:07 +0100)]
Fix various problems found by fuzzing.

1. IndexTokenSource::getNextToken cannot return nullptr; some code was
still written assuming it can; make getNextToken more resilient against
incorrect input and fix its call-sites.

2. Change various asserts that can happen due to user provided input to
conditionals in the code.

2 years agoAdd missing clang-tidy args in index.rst (NFC)
Salman Javed [Mon, 22 Nov 2021 09:49:49 +0000 (22:49 +1300)]
Add missing clang-tidy args in index.rst (NFC)

The RST docs have gone out of sync with the command-line args that the
clang-tidy program actually supports.

2 years ago[clangd] IncludeCleaner: Mark possible expr resolutions as used
Kirill Bobyrev [Mon, 22 Nov 2021 09:44:21 +0000 (10:44 +0100)]
[clangd] IncludeCleaner: Mark possible expr resolutions as used

Fixes: https://github.com/clangd/clangd/issues/934

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D114287

2 years ago[AArch64] Sink splat shuffles to lane index intrinsics
David Green [Mon, 22 Nov 2021 08:11:35 +0000 (08:11 +0000)]
[AArch64] Sink splat shuffles to lane index intrinsics

This teaches AArch64TargetLowering::shouldSinkOperands to sink splat
shuffles to certain neon intrinsics, so that they can make use of the
lane variants of the instructions that are available.

Differential Revision: https://reviews.llvm.org/D112994

2 years agoFix nits in clang-tidy's documentation (NFC)
Salman Javed [Mon, 22 Nov 2021 08:06:08 +0000 (21:06 +1300)]
Fix nits in clang-tidy's documentation (NFC)

Add commas, articles, and conjunctions where missing.

2 years ago[C++20] [Coroutines] Warn for deprecated form 'for co_await'
Chuanqi Xu [Mon, 22 Nov 2021 07:53:51 +0000 (15:53 +0800)]
[C++20] [Coroutines] Warn for deprecated form 'for co_await'

The form 'for co_await' is part of CoroutineTS instead of C++20.
So if we detected the use of 'for co_await' in C++20, we should emit
a warning at least.

2 years agotsan: add another fork test
Dmitry Vyukov [Fri, 19 Nov 2021 15:51:30 +0000 (16:51 +0100)]
tsan: add another fork test

Add a fork test that models what happens on Mac
where fork calls malloc/free inside of our atfork
callbacks.

Reviewed By: vitalybuka, yln

Differential Revision: https://reviews.llvm.org/D114250

2 years ago[ELF][NFC] Do not pass region name to expandMemoryRegion()
Igor Kudrin [Mon, 22 Nov 2021 07:19:07 +0000 (14:19 +0700)]
[ELF][NFC] Do not pass region name to expandMemoryRegion()

The name can be easily got on-site.

Differential Revision: https://reviews.llvm.org/D114228

2 years ago[RISCV] Generate pseudo instruction li
wangpc [Mon, 22 Nov 2021 06:01:37 +0000 (14:01 +0800)]
[RISCV] Generate pseudo instruction li

Add an alias of `addi [x], zero, imm` to generate pseudo
instruction li, which makes assembly mush more readable.
For existed tests, users can update them by running script
`llvm/utils/update_llc_test_checks.py`.

Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D112692

2 years ago[llvm] Use make_early_inc_range (NFC)
Kazu Hirata [Mon, 22 Nov 2021 03:24:17 +0000 (19:24 -0800)]
[llvm] Use make_early_inc_range (NFC)

2 years ago[llvm] Use range-based for loops (NFC)
Kazu Hirata [Mon, 22 Nov 2021 03:24:15 +0000 (19:24 -0800)]
[llvm] Use range-based for loops (NFC)

2 years agoNFC: clang-format lib/Transforms/Instrumentation/InstrProfiling.cpp
Roland McGrath [Mon, 22 Nov 2021 02:14:30 +0000 (18:14 -0800)]
NFC: clang-format lib/Transforms/Instrumentation/InstrProfiling.cpp

Differential Revision: https://reviews.llvm.org/D114343

2 years ago[libc++][NFC] Sort includes in __ranges/concepts.h
Joe Loser [Sun, 21 Nov 2021 00:13:18 +0000 (19:13 -0500)]
[libc++][NFC] Sort includes in __ranges/concepts.h

Differential Revision: https://reviews.llvm.org/D114328

2 years ago[gn build] Port 1dc62f2653f8
LLVM GN Syncbot [Mon, 22 Nov 2021 00:29:19 +0000 (00:29 +0000)]
[gn build] Port 1dc62f2653f8

2 years ago[libc++] Implement P1272R4 (std::byteswap)
Nikolas Klauser [Sun, 21 Nov 2021 23:22:55 +0000 (00:22 +0100)]
[libc++] Implement P1272R4 (std::byteswap)

Implement P1274R4

Reviewed By: Quuxplusone, Mordante, #libc

Spies: jloser, lebedev.ri, mgorny, libcxx-commits, arichardson

Differential Revision: https://reviews.llvm.org/D114074

2 years ago[mlir] Fix unused function warning (NFC)
Jacques Pienaar [Sun, 21 Nov 2021 23:06:08 +0000 (15:06 -0800)]
[mlir] Fix unused function warning (NFC)

Delete function no longer needed as all derived classes override
printer.

2 years ago[mlir] Move trait to InferTypeOpInterface
Jacques Pienaar [Sun, 21 Nov 2021 22:41:11 +0000 (14:41 -0800)]
[mlir] Move trait to InferTypeOpInterface

Step towards removing the hard coded behavior for this trait and to instead use common interface.

Differential Revision: https://reviews.llvm.org/D114208

2 years ago[CodeGen] Use llvm::is_contained (NFC)
Kazu Hirata [Sun, 21 Nov 2021 18:36:20 +0000 (10:36 -0800)]
[CodeGen] Use llvm::is_contained (NFC)

2 years ago[llvm] Use range-based for loops (NFC)
Kazu Hirata [Sun, 21 Nov 2021 18:36:18 +0000 (10:36 -0800)]
[llvm] Use range-based for loops (NFC)

2 years ago[ARM] Regenerate sxt_rot.ll tests
Simon Pilgrim [Sun, 21 Nov 2021 18:33:05 +0000 (18:33 +0000)]
[ARM] Regenerate sxt_rot.ll tests

2 years ago[Thumb2] Regenerate ext + rot tests
Simon Pilgrim [Sun, 21 Nov 2021 18:32:10 +0000 (18:32 +0000)]
[Thumb2] Regenerate ext + rot tests

2 years ago[PowerPC] Regenerate rlwinm2.ll test
Simon Pilgrim [Sun, 21 Nov 2021 18:30:58 +0000 (18:30 +0000)]
[PowerPC] Regenerate rlwinm2.ll test

2 years agoAdd a best practice section on how to configure a fast builder
Philip Reames [Sun, 21 Nov 2021 16:00:34 +0000 (08:00 -0800)]
Add a best practice section on how to configure a fast builder

This is based on conversations with a couple of folks currently running buildbots. There's a couple pieces which didn't make it in, but this tries to cover the common themes.

Differential Revision: https://reviews.llvm.org/D114325

2 years ago[MLIR][NFC] Simplex::restoreRow: improve documentation
Arjun P [Sun, 21 Nov 2021 13:53:15 +0000 (19:23 +0530)]
[MLIR][NFC] Simplex::restoreRow: improve documentation

2 years ago[ARM][ParallelDSP] Regenerate complex_dot_prod.ll test
Simon Pilgrim [Sun, 21 Nov 2021 12:01:44 +0000 (12:01 +0000)]
[ARM][ParallelDSP] Regenerate complex_dot_prod.ll test

2 years ago[AArch64] Extra testing for sinking splats to various instructions. NFC
David Green [Sun, 21 Nov 2021 11:46:34 +0000 (11:46 +0000)]
[AArch64] Extra testing for sinking splats to various instructions. NFC

2 years ago[ELF] Move getOutputSectionName from Writer.cpp to LinkerScript.cpp. NFC
Fangrui Song [Sun, 21 Nov 2021 06:18:09 +0000 (22:18 -0800)]
[ELF] Move getOutputSectionName from Writer.cpp to LinkerScript.cpp. NFC

and internalize it.

2 years ago[llvm] Use range-based for loops (NFC)
Kazu Hirata [Sun, 21 Nov 2021 02:42:10 +0000 (18:42 -0800)]
[llvm] Use range-based for loops (NFC)

2 years ago[X86][FP16] Relax the pattern condition for VZEXT_MOVL to match more cases
Phoebe Wang [Sun, 21 Nov 2021 01:12:46 +0000 (09:12 +0800)]
[X86][FP16] Relax the pattern condition for VZEXT_MOVL to match more cases

Fixes pr52560

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D114313

2 years ago[libc++][NFC] Fix typo in ranges::iterator_t synopsis
Joe Loser [Sun, 21 Nov 2021 00:15:00 +0000 (19:15 -0500)]
[libc++][NFC] Fix typo in ranges::iterator_t synopsis

The `iterator_t` alias template is on `T` not a `R` like the other
neighboring alias templates. Fix the typo.

2 years ago[libc++] [doc] Mark some spaceship-related LWG issues as "Complete."
Arthur O'Dwyer [Thu, 14 Oct 2021 20:49:58 +0000 (16:49 -0400)]
[libc++] [doc] Mark some spaceship-related LWG issues as "Complete."

LWG3330 has been "Completed" since D99309, which was in the 13.x timeframe.
Reviewed as part of D110738.

2 years ago[NFC][X86][Costmodel] Actually test +prefer-256-bit in replication-shuffle-related...
Roman Lebedev [Sat, 20 Nov 2021 22:11:05 +0000 (01:11 +0300)]
[NFC][X86][Costmodel] Actually test +prefer-256-bit in replication-shuffle-related tests :(

While -prefer-256-bit indeed becomes complete with D114314,
the real-world (the one with +prefer-256-bit) coverage is lacking.

Hilarious.

2 years ago[DSE] Drop hasAnalyzableMemoryWrite() (NFCI)
Nikita Popov [Sat, 20 Nov 2021 22:17:41 +0000 (23:17 +0100)]
[DSE] Drop hasAnalyzableMemoryWrite() (NFCI)

The functionality of hasAnalyzableMemoryWrite() is effectively
subsumed by getLocForWriteEx(), which will return None if the
instruction is not analyzable. The implementations don't match
exactly (e.g. getLocForWriteEx() does not limit non-calls to
stores), but in conjunction with the isRemovable() check, it ends
up being the same.

2 years ago[clang-tidy] performance-unnecessary-copy-initialization: Correctly match the type...
Felix Berger [Fri, 19 Nov 2021 01:33:22 +0000 (20:33 -0500)]
[clang-tidy] performance-unnecessary-copy-initialization: Correctly match the type name of the thisPointertype.

The matching did not work correctly for pointer and reference types.

Differential Revision: https://reviews.llvm.org/D114212

Reviewed-by: courbet
2 years ago[LVI] Drop requirement that modulus is constant
Nikita Popov [Sat, 20 Nov 2021 20:06:08 +0000 (21:06 +0100)]
[LVI] Drop requirement that modulus is constant

If we're looking only at the lower bound, the actual modulus
doesn't matter. This is a leftover from when I wanted to consider
the upper bound as well, where the modulus does matter.

2 years ago[LVI] Support urem in implied conditions
Nikita Popov [Sat, 20 Nov 2021 18:03:45 +0000 (19:03 +0100)]
[LVI] Support urem in implied conditions

If (X urem M) >= C we know that X >= C. Make use of this fact
when computing the implied condition range.

In some cases we could also establish an upper bound, but that's
both tricker and not interesting in practice.

Alive: https://alive2.llvm.org/ce/z/R5ZGSW

2 years ago[CVP] Add tests for implied conditions using urem (NFC)
Nikita Popov [Sat, 20 Nov 2021 19:48:56 +0000 (20:48 +0100)]
[CVP] Add tests for implied conditions using urem (NFC)

2 years ago[VPlan] Wrap vector loop blocks in region.
Florian Hahn [Sat, 20 Nov 2021 17:59:47 +0000 (17:59 +0000)]
[VPlan] Wrap vector loop blocks in region.

A first step towards modeling preheader and exit blocks in VPlan as well.
Keeping the vector loop in a region allows for changing the VF as we
traverse region boundaries.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D113182

2 years ago[InstCombine] add folds for binop with sexted bool and constant operands
Sanjay Patel [Sat, 20 Nov 2021 15:55:41 +0000 (10:55 -0500)]
[InstCombine] add folds for binop with sexted bool and constant operands

This is a generalization/extension of the existing and/or
folds noted with TODO comments. Those have a one-use
constraint that is not necessary.

Potential follow-ups are noted by the TODO comments in
the new function. We can also call this function from
other binop visit* functions, but we need to add tests
first.

This solves:
https://llvm.org/PR52543

https://alive2.llvm.org/ce/z/NWuCR5

2 years ago[InstCombine] add tests for bitwise logic with bool op; NFC
Sanjay Patel [Sat, 20 Nov 2021 15:19:27 +0000 (10:19 -0500)]
[InstCombine] add tests for bitwise logic with bool op; NFC

2 years ago[libc++] [test] Eliminate libcpp-no-noexcept-function-type and libcpp-no-structured...
Arthur O'Dwyer [Mon, 8 Nov 2021 22:00:43 +0000 (17:00 -0500)]
[libc++] [test] Eliminate libcpp-no-noexcept-function-type and libcpp-no-structured-bindings.

At this point, every supported compiler that claims a -std=c++17 mode
should also support these features.

Differential Revision: https://reviews.llvm.org/D113436

2 years ago[MLIR] Simplify Semi-affine expressions by rule based matching and replacing "expr...
Arnab Dutta [Sat, 20 Nov 2021 15:34:59 +0000 (21:04 +0530)]
[MLIR] Simplify Semi-affine expressions by rule based matching and replacing "expr - q * (expr floordiv q)" with  "expr mod q" expression.

Add rule based matching for detecting and transforming "expr - q * (expr floordiv q)"
to "expr mod q", where q is a symbolic exxpression, in simplifyAdd function.

Reviewed By: bondhugula, dcaballe

Differential Revision: https://reviews.llvm.org/D112985

2 years ago[Libomptarget] Remove undefined symbol in old runtime
Joseph Huber [Fri, 19 Nov 2021 15:02:28 +0000 (10:02 -0500)]
[Libomptarget] Remove undefined symbol in old runtime

A function with no definition was left in the old runtime, causing
linker errors when trying to compile.

Reviewed By: tianshilei1992

Differential Revision: https://reviews.llvm.org/D114264

2 years agocompiler-rt: Use FreeBSD's elf_aux_info to detect AArch64 HW features
Dimitry Andric [Sat, 20 Nov 2021 11:10:06 +0000 (12:10 +0100)]
compiler-rt: Use FreeBSD's elf_aux_info to detect AArch64 HW features

Using the out-of-line LSE atomics helpers for AArch64 on FreeBSD also
requires adding support for initializing __aarch64_have_lse_atomics
correctly. On Linux this is done with getauxval(3), on FreeBSD with
elf_aux_info(3), which has a slightly different interface.

Differential Revision: https://reviews.llvm.org/D109330

2 years ago[NFC][X86][Costmodel] Add AVX512DQ runlines to trunc.ll/extend.ll
Roman Lebedev [Sat, 20 Nov 2021 10:55:13 +0000 (13:55 +0300)]
[NFC][X86][Costmodel] Add AVX512DQ runlines to trunc.ll/extend.ll

2 years ago[NFC][X86][MCA] Add forgotten test coverage for AVX512's VPMOVM2[BWDQ] / VPMOV[BWDQ]2M
Roman Lebedev [Sat, 20 Nov 2021 10:09:18 +0000 (13:09 +0300)]
[NFC][X86][MCA] Add forgotten test coverage for AVX512's VPMOVM2[BWDQ] / VPMOV[BWDQ]2M

2 years ago[MLIR] Avoid creation of buggy affine maps while replacing dimension and symbol
Arnab Dutta [Sat, 20 Nov 2021 06:30:49 +0000 (12:00 +0530)]
[MLIR] Avoid creation of buggy affine maps while replacing dimension and symbol

Initially before appending the newly composed dimension and symbols
to the dimension and symbol list whose size is to be passed in
AffineMap::get(), the call to the AffineMap::get() was made, resulting
in wrong dimCount and symbolCount being passed as argument. We move the
call to the AffineMap::get() after the diimension and symbol list are
updated.

Differential Revision: https://reviews.llvm.org/D114237

2 years ago[X86] Don't combine (x86cmp (trunc (movmsk (bitcast X))), 0) if the truncate discards...
Craig Topper [Sat, 20 Nov 2021 03:05:10 +0000 (19:05 -0800)]
[X86] Don't combine (x86cmp (trunc (movmsk (bitcast X))), 0) if the truncate discards unknown bits.

We have transform that tries turn a pmovmskb into movmskps/pd or
movmskps to movmskpd. This transform isn't valid if the truncate
discarded bits that might be set by the original movmsk.

We could fix this by inserting an AND after the new movmsk to discard
the equivalent of the truncated bits, but I've left that for later
patch.

Fixes PR52567.

Differential Revision: https://reviews.llvm.org/D114306

2 years ago[X86] Add test case for pr52567. NFC
Craig Topper [Sat, 20 Nov 2021 02:52:17 +0000 (18:52 -0800)]
[X86] Add test case for pr52567. NFC

2 years ago[ORC] Make JITDylib::AsynchronousSymbolQuerySet private.
Lang Hames [Sat, 20 Nov 2021 05:12:23 +0000 (21:12 -0800)]
[ORC] Make JITDylib::AsynchronousSymbolQuerySet private.

This type does not need to be public

2 years ago[llvm] Use range-based for loops (NFC)
Kazu Hirata [Sat, 20 Nov 2021 05:12:12 +0000 (21:12 -0800)]
[llvm] Use range-based for loops (NFC)

2 years ago[AMDGPU] Do not generate ELF symbols for the local branch target labels
RamNalamothu [Fri, 19 Nov 2021 20:23:38 +0000 (01:53 +0530)]
[AMDGPU] Do not generate ELF symbols for the local branch target labels

The compiler was generating symbols in the final code object for local
branch target labels. This bloats the code object, slows down the loader,
and is only used to simplify disassembly.

Use '--symbolize-operands' with llvm-objdump to improve readability of the
branch target operands in disassembly.

Fixes: SWDEV-312223

Reviewed By: scott.linder

Differential Revision: https://reviews.llvm.org/D114273

2 years ago[ORC][JITLink] Move JITDylib name into JITLinkDylib base class.
Lang Hames [Sat, 20 Nov 2021 04:51:44 +0000 (20:51 -0800)]
[ORC][JITLink] Move JITDylib name into JITLinkDylib base class.

This will enable better error messages and debug logs in JITLink.

2 years ago[GVN][NFC] Remove redundant check
ksyx [Sat, 13 Nov 2021 20:59:43 +0000 (15:59 -0500)]
[GVN][NFC] Remove redundant check

The if-check above deleted part guarantees that StoreOffset <= LoadOffset
and that StoreOffset + StoreSize >= LoadOffset + LoadSize, and given that
LoadOffset + LoadSize > LoadOffset when LoadSize > 0. Thus, this shows
StoreOffset + StoreSize > LoadOffset is guaranteed given LoadSize > 0,
while it could be meaningless to have a type with nonpositive size, so that
the check could be removed. The values are converted to signed types to
avoid unsigned operation with negative offsets.

Part of revision D100179
Reapply commit c35e8185d8c170c20e28956e0c9f3c1be895fefb with fixing problem
reported by mstorsjo

2 years ago[hmaptool] Port to python3
Nathan Lanza [Wed, 11 Aug 2021 22:55:01 +0000 (18:55 -0400)]
[hmaptool] Port to python3

This is just a few trivial changes -- change the interpreter and fix a
few byte-vs-string issues.

Differential Revision: https://reviews.llvm.org/D107944

2 years ago[NFC] Test commit, add whitespace to end-of-line
James Nagurne [Sat, 20 Nov 2021 00:21:23 +0000 (18:21 -0600)]
[NFC] Test commit, add whitespace to end-of-line

2 years ago[clangd] Avoid possible crash: apply configuration after binding methods
Sam McCall [Sat, 20 Nov 2021 00:10:30 +0000 (01:10 +0100)]
[clangd] Avoid possible crash: apply configuration after binding methods

The configuration may kick off indexing, which may involve sending LSP
messages.
The crash is fiddly to reproduce in a hermetic test (we need background
indexing on without disk storage, and to handle server->client messages
in LSPClient...)

Fixes https://github.com/clangd/clangd/issues/926

2 years ago[InstrProf] Use i32 for GEP index from lowering llvm.instrprof.increment
Ellis Hoag [Fri, 19 Nov 2021 23:44:48 +0000 (15:44 -0800)]
[InstrProf] Use i32 for GEP index from lowering llvm.instrprof.increment

The `llvm.instrprof.increment` intrinsic uses `i32` for the index. We should use this same type for the index into the GEP instructions.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D114268

2 years ago[MLIR][GPU] Link in device libraries during HSA compilation if needed
Krzysztof Drewniak [Thu, 18 Nov 2021 22:37:53 +0000 (22:37 +0000)]
[MLIR][GPU] Link in device libraries during HSA compilation if needed

To perform some operations, such as sin() or printf(), code compiled
for AMD GPUs must be linked to a series of device libraries. This
commit adds support for linking in these libraries.

However, since these device libraries are delivered as LLVM bitcode,
raising the possibility of version incompatibilities, this commit only
links in libraries when the functions from those libraries are called
by the code being compiled.

This code also sets the math flags to their most conservative values,
as MLIR doesn't have a `-ffast-math` equivalent.

Depends on D114114

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D114117

2 years ago[NFC][llvm] Inclusive language: remove instance of master from Thumb2SizeReduction.cpp
Quinn Pham [Thu, 18 Nov 2021 21:52:39 +0000 (15:52 -0600)]
[NFC][llvm] Inclusive language: remove instance of master from Thumb2SizeReduction.cpp

[NFC] As part of using inclusive language within the llvm project, this patch
replaces master with main in `Thumb2SizeReduction.cpp`.

Reviewed By: dmgreen

Differential Revision: https://reviews.llvm.org/D114196

2 years ago[mlir] Bug fix. Stream must outlive the pass manager.
rdzhabarov [Fri, 19 Nov 2021 21:43:17 +0000 (21:43 +0000)]
[mlir] Bug fix. Stream must outlive the pass manager.

Bug fix. Stream must outlive the pass manager.

Reviewed By: Chia-hungDuan

Differential Revision: https://reviews.llvm.org/D114277

2 years ago[Sema] fix nondeterminism in ASTContext::getDeducedTemplateSpecializationType
Wei Wang [Fri, 19 Nov 2021 21:14:41 +0000 (13:14 -0800)]
[Sema] fix nondeterminism in ASTContext::getDeducedTemplateSpecializationType

`DeducedTemplateSpecializationTypes` is a `llvm::FoldingSet<DeducedTemplateSpecializationType>` [1],
where `FoldingSetNodeID` is based on the values: {`TemplateName`, `QualType`, `IsDeducedAsDependent`},
those values are also used as `DeducedTemplateSpecializationType` constructor arguments.

A `FoldingSetNodeID` created by the static `DeducedTemplateSpecializationType::Profile` may not be equal
to`FoldingSetNodeID` created by a member `DeducedTemplateSpecializationType::Profile` of an instance
created with the same {`TemplateName`, `QualType`, `IsDeducedAsDependent`}, which makes
`DeducedTemplateSpecializationTypes` lookups nondeterministic.

Specifically, while `IsDeducedAsDependent` value is passes to the constructor, `IsDependent()` method on
the created instance may return a different value, because `IsDependent` is not saved as is:
```name=clang/include/clang/AST/Type.h
  DeducedTemplateSpecializationType(TemplateName Template,  QualType DeducedAsType, bool IsDeducedAsDependent)
      : DeducedType(DeducedTemplateSpecialization, DeducedAsType,
                    toTypeDependence(Template.getDependence()) | // <~  also considers `TemplateName` parameter
                        (IsDeducedAsDependent ? TypeDependence::DependentInstantiation : TypeDependence::None)),
```
For example, if an instance A with key `FoldingSetNodeID {A, B, false}` is inserted. Then a key
`FoldingSetNodeID {A, B, true}` is probed:
If it happens to correspond to the same bucket in `FoldingSet` as the first key, and `A.Profile()` returns
`FoldingSetNodeID {A, B, true}`, then it's a hit.
If the bucket for the second key is different from the first key, instance A is not considered at all, and it's
a no hit, even if `A.Profile()` returns  `FoldingSetNodeID {A, B, true}`.

Since `TemplateName`, `QualType` parameter values involve memory pointers, the lookup result depend on allocator,
and may differ from run to run. When this is used as part of modules compilation, it may result in "module out of date"
errors, if imported modules are built on different machines.

This makes `ASTContext::getDeducedTemplateSpecializationType` consider `Template.isDependent()` similar
`DeducedTemplateSpecializationType` constructor.

Tested on a very big codebase, by running modules compilations from directories with varied path length
(seem to affect allocator seed).

1. https://llvm.org/docs/ProgrammersManual.html#llvm-adt-foldingset-h

Patch by Wei Wang and Igor Sugak!

Reviewed By: bruno

Differential Revision: https://reviews.llvm.org/D112481

2 years ago[InstCombine] add/adjust tests for mask of sext i1; NFC
Sanjay Patel [Fri, 19 Nov 2021 17:48:27 +0000 (12:48 -0500)]
[InstCombine] add/adjust tests for mask of sext i1; NFC

These are sibling transforms, but the test coverage was
uneven and incomplete.

2 years ago[PowerPC][NFC] Add a series of codegen tests for vector reductions.
Stefan Pintilie [Mon, 15 Nov 2021 21:26:30 +0000 (15:26 -0600)]
[PowerPC][NFC] Add a series of codegen tests for vector reductions.

This patch only adds tests for PowerPC. The purpose of these tests
is to track what code is generated for various vector reductions.

Reviewed By: nemanjai, #powerpc

Differential Revision: https://reviews.llvm.org/D113801

2 years ago[libc++][NFC] Add missing include in test
Louis Dionne [Fri, 19 Nov 2021 21:01:39 +0000 (16:01 -0500)]
[libc++][NFC] Add missing include in test

2 years agoAllow __attribute__((swift_attr)) in attribute push pragmas
Becca Royal-Gordon [Fri, 19 Nov 2021 20:10:15 +0000 (12:10 -0800)]
Allow __attribute__((swift_attr)) in attribute push pragmas

This change allows SwiftAttr to be used with #pragma clang attribute push
to add Swift attributes to large regions of header files.
We plan to use this to annotate headers with concurrency information.

Patch by: Becca Royal-Gordon

Differential Revision: https://reviews.llvm.org/D112773

2 years ago[MLIR][GPU] Make the path to ROCm a runtime option
Krzysztof Drewniak [Thu, 18 Nov 2021 21:42:42 +0000 (21:42 +0000)]
[MLIR][GPU] Make the path to ROCm a runtime option

Our current build assumes that the path to ROCm we find at build time
will be the path at which ROCm is located when the built code is
executed. This commit adds a --rocm-path option to SerializeToHsaco,
and removes the HIP dependency that the SerializeToHsaco previously had.

Depends on D114113

(though the dependency is to ensure the diffs apply cleanly and to capture the dependency on D114107)

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D114114

2 years agoNFC: Callout restriction on folding 0-result ops in documentation.
Stella Laurenzo [Fri, 19 Nov 2021 20:32:21 +0000 (20:32 +0000)]
NFC: Callout restriction on folding 0-result ops in documentation.

Differential Revision: https://reviews.llvm.org/D114271

2 years agoDWARFVerifier: Simplify name lookups
David Blaikie [Fri, 19 Nov 2021 20:31:27 +0000 (12:31 -0800)]
DWARFVerifier: Simplify name lookups

No need to use the dynamic fallback query when the name type is known
statically at the call site.

2 years ago[openmp][amdgpu][nfc] Simplify implicit args handling
Jon Chesterfield [Fri, 19 Nov 2021 20:18:23 +0000 (20:18 +0000)]
[openmp][amdgpu][nfc] Simplify implicit args handling

Removes a +x/-x pair on the only store/load of a variable
and deletes some nearby dead code. Also reduces the size of the implicit
struct to reflect the code currently emitted by clang.

Differential Revision: https://reviews.llvm.org/D114270

2 years ago[libc++] Test that our algorithms never copy a user-provided comparator.
Arthur O'Dwyer [Thu, 18 Nov 2021 05:07:23 +0000 (00:07 -0500)]
[libc++] Test that our algorithms never copy a user-provided comparator.

This is not mandated by the standard, so it goes in libcxx/test/libcxx/.
It's certainly arguable that the algorithms changed here
(`is_heap`, `is_sorted`, `min`, `max`) are harmless and we should
just let them copy their comparators once. But at the same time,
it's nice to have all our algorithms be 100% consistent and never
copy a comparator, not even once.

Differential Revision: https://reviews.llvm.org/D114136

2 years ago[clang][NFC] Inclusive terms: replace some uses of sanity in clang
Zarko Todorovski [Fri, 19 Nov 2021 19:50:09 +0000 (14:50 -0500)]
[clang][NFC] Inclusive terms: replace some uses of sanity in clang

Rewording of comments to avoid using `sanity test, sanity check`.

Reviewed By: aaron.ballman, Quuxplusone

Differential Revision: https://reviews.llvm.org/D114025

2 years ago[libc++] Fix feature test macro for __cpp_lib_to_chars
Louis Dionne [Fri, 19 Nov 2021 14:52:28 +0000 (09:52 -0500)]
[libc++] Fix feature test macro for __cpp_lib_to_chars

We would have been defining it in <utility> instead of <charconv>. For
the time being, this doesn't change anything since we don't implement
the feature test macro anyways.

Also, as a fly-by, this removes obsolete feature test macro tests. There
was a brief time back in the days when we wrote feature test macro tests
manually. In particular, we had test files for __cpp_lib_to_chars and
__cpp_lib_memory_resource. Since we now have a principled way of generating
these tests with scripts, this commit removes the obsolete (and empty)
tests for these two feature test macros.

Differential Revision: https://reviews.llvm.org/D114243

2 years ago[libc++] Fix some tests that were broken in the single-threaded configuration
Louis Dionne [Fri, 19 Nov 2021 14:50:05 +0000 (09:50 -0500)]
[libc++] Fix some tests that were broken in the single-threaded configuration

We never noticed it because our CI doesn't actually build against a C
library that doesn't have threading functionality, however building
against a truly thread-free platform surfaces these issues.

Differential Revision: https://reviews.llvm.org/D114242

2 years ago[libc++] Avoid potential truncation warnings in std::abs test
Louis Dionne [Fri, 19 Nov 2021 14:55:45 +0000 (09:55 -0500)]
[libc++] Avoid potential truncation warnings in std::abs test

One some platforms, -Wimplicit-int-conversion is enabled by default,
which can lead to additional warnings being triggered in this test.
Since we're only trying to test errors related to calling abs(), the
assignment is superfluous.

As a fly-by fix, correct one instance of ::abs to std::abs and made
the test a .verify.cpp test instead.

Differential Revision: https://reviews.llvm.org/D114244

2 years ago[MLIR][GPU] Run generic LLVM optimizations when serializing (on AMD)
Krzysztof Drewniak [Thu, 18 Nov 2021 21:45:27 +0000 (21:45 +0000)]
[MLIR][GPU] Run generic LLVM optimizations when serializing (on AMD)

- Adds hooks that allow SerializeTo* passes to arbitrarily transform
the produced LLVM Module before it is passed to the code generation
passes.

- Uses these hooks within the SerializeToHsaco pass in order to run
LLVM optimizations and to set the optimization level on the
TargetMachine.

- Adds an optLevel parameter to SerializeToHsaco

Future work may include moving much of what's been added to
SerializeToHsaco to SerializeToBlob, but that would require
confirmation from the NVVM backend maintainers that it would be
appropriate to do so.

Depends on D114107

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D114113

2 years ago[mlir][gpu] Extend shuffle op modes and add nvvm lowering
Thomas Raoux [Fri, 19 Nov 2021 19:03:10 +0000 (11:03 -0800)]
[mlir][gpu] Extend shuffle op modes and add nvvm lowering

Add up, down and idx modes to gpu shuffle ops, also change the mode from
string to enum

Differential Revision: https://reviews.llvm.org/D114188

2 years ago[AMDGPU] Add an implicit use of M0 to all V_MOV_B32_indirect_read/write
Jay Foad [Fri, 19 Nov 2021 13:48:23 +0000 (13:48 +0000)]
[AMDGPU] Add an implicit use of M0 to all V_MOV_B32_indirect_read/write

NFCI. Previously the implicit use was added to V_MOV_B32_indirect_read
when building the instruction. V_MOV_B32_indirect_write didn't have an
implicit use of M0 at all, but apparently it did not cause any problems.

Differential Revision: https://reviews.llvm.org/D114239

2 years ago[ELF] Support discarding .got.plt
Fangrui Song [Fri, 19 Nov 2021 18:50:53 +0000 (10:50 -0800)]
[ELF] Support discarding .got.plt

Fix a null pointer dereference when .got.plt is discarded.

This also adds a test for discarding `.plt`.

Reviewed By: ikudrin

Differential Revision: https://reviews.llvm.org/D114180

2 years ago[openmp][amdgpu][nfc] Inline interop_hsa_get_kernel_info into only caller
Jon Chesterfield [Fri, 19 Nov 2021 18:40:24 +0000 (18:40 +0000)]
[openmp][amdgpu][nfc] Inline interop_hsa_get_kernel_info into only caller

2 years ago[mlir][vector] NFC, move some vector patterns in a separate file
Thomas Raoux [Fri, 19 Nov 2021 18:31:52 +0000 (10:31 -0800)]
[mlir][vector] NFC, move some vector patterns in a separate file

Move patterns related to dropping lead unit dim into their own file.

Differential Revision: https://reviews.llvm.org/D114265

2 years ago[mlir][vector] Remove usage of shapecast to remove unit dim
Thomas Raoux [Fri, 19 Nov 2021 00:09:49 +0000 (16:09 -0800)]
[mlir][vector] Remove usage of shapecast to remove unit dim

Instead of using shape_cast op in the pattern removing leading unit
dimensions we use extract/broadcast ops. This is part of the effort to
restrict ShapeCastOp fuirther in the future and only allow them to
convert to or from 1D vector.

This also adds extra canonicalization to fill the gaps in simplifying
broadcast/extract ops.

Differential Revision: https://reviews.llvm.org/D114205

2 years ago[SROA] Add new test cases to cover existing SROA behavior that structs will be scalar...
Mingming Liu [Fri, 19 Nov 2021 18:16:11 +0000 (18:16 +0000)]
[SROA] Add new test cases to cover existing SROA behavior that structs will be scalarized.

Add an IR in unit test directory, which demonstrate the scalarization for struct allocations.
This is added to pave the way for an SROA change to skip scalarization for some cases.

Reviewed By: davidxl

Differential Revision: https://reviews.llvm.org/D114128

2 years ago[DSE] Improve handling of `strncpy` in Dead Store Elimination
Fabian Wolff [Fri, 19 Nov 2021 17:46:17 +0000 (17:46 +0000)]
[DSE] Improve handling of `strncpy` in Dead Store Elimination

Fixes PR#52062 and one of the remaining cases of PR#47644.

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D114035

2 years ago[analyzer][NFC] MaybeUInt -> MaybeCount
Balazs Benics [Fri, 19 Nov 2021 17:36:55 +0000 (18:36 +0100)]
[analyzer][NFC] MaybeUInt -> MaybeCount

I forgot to include this in D113594

Differential Revision: https://reviews.llvm.org/D113594

2 years ago[analyzer][NFC] Use enum for CallDescription flags
Balazs Benics [Fri, 19 Nov 2021 17:32:13 +0000 (18:32 +0100)]
[analyzer][NFC] Use enum for CallDescription flags

Yeah, let's prefer a slightly stronger type representing this.

Reviewed By: martong, xazax.hun

Differential Revision: https://reviews.llvm.org/D113595

2 years ago[analyzer][NFC] Consolidate the inner representation of CallDescriptions
Balazs Benics [Fri, 19 Nov 2021 17:32:13 +0000 (18:32 +0100)]
[analyzer][NFC] Consolidate the inner representation of CallDescriptions

`CallDescriptions` have a `RequiredArgs` and `RequiredParams` members,
but they are of different types, `unsigned` and `size_t` respectively.
In the patch I use only `unsigned` for both, that should be large enough
anyway.
I also introduce the `MaybeUInt` type alias for `Optional<unsigned>`.

Additionally, I also avoid the use of the //smart// less-than operator.

  template <typename T>
  constexpr bool operator<=(const Optional<T> &X, const T &Y);

Which would check if the optional **has** a value and compare the data
only after. I found it surprising, thus I think we are better off
without it.

Reviewed By: martong, xazax.hun

Differential Revision: https://reviews.llvm.org/D113594

2 years ago[analyzer][NFC] CallDescription should own the qualified name parts
Balazs Benics [Fri, 19 Nov 2021 17:32:13 +0000 (18:32 +0100)]
[analyzer][NFC] CallDescription should own the qualified name parts

Previously, CallDescription simply referred to the qualified name parts
by `const char*` pointers.
In the future we might want to dynamically load and populate
`CallDescriptionMaps`, hence we will need the `CallDescriptions` to
actually **own** their qualified name parts.

Reviewed By: martong, xazax.hun

Differential Revision: https://reviews.llvm.org/D113593

2 years ago[analyzer][NFC] Demonstrate the use of CallDescriptionSet
Balazs Benics [Fri, 19 Nov 2021 17:32:13 +0000 (18:32 +0100)]
[analyzer][NFC] Demonstrate the use of CallDescriptionSet

Reviewed By: martong, xazax.hun

Differential Revision: https://reviews.llvm.org/D113592

2 years ago[analyzer][NFC] Switch to using CallDescription::matches() instead of isCalled()
Balazs Benics [Fri, 19 Nov 2021 17:32:13 +0000 (18:32 +0100)]
[analyzer][NFC] Switch to using CallDescription::matches() instead of isCalled()

This patch replaces each use of the previous API with the new one.
In variadic cases, it will use the ADL `matchesAny(Call, CDs...)`
variadic function.
Also simplifies some code involving such operations.

Reviewed By: martong, xazax.hun

Differential Revision: https://reviews.llvm.org/D113591

2 years ago[analyzer][NFC] Introduce CallDescription::matches() in addition to isCalled()
Balazs Benics [Fri, 19 Nov 2021 17:32:13 +0000 (18:32 +0100)]
[analyzer][NFC] Introduce CallDescription::matches() in addition to isCalled()

This patch introduces `CallDescription::matches()` member function,
accepting a `CallEvent`.
Semantically, `Call.isCalled(CD)` is the same as `CD.matches(Call)`.

The patch also introduces the `matchesAny()` variadic free function template.
It accepts a `CallEvent` and at least one `CallDescription` to match
against.

Reviewed By: martong

Differential Revision: https://reviews.llvm.org/D113590

2 years ago[analyzer][NFC] Introduce CallDescriptionSets
Balazs Benics [Fri, 19 Nov 2021 17:32:13 +0000 (18:32 +0100)]
[analyzer][NFC] Introduce CallDescriptionSets

Sometimes we only want to decide if some function is called, and we
don't care which of the set.
This `CallDescriptionSet` will have the same behavior, except
instead of `lookup()` returning a pointer to the mapped value,
the `contains()` returns `bool`.
Internally, it uses the `CallDescriptionMap<bool>` for implementing the
behavior. It is preferred, to reuse the generic
`CallDescriptionMap::lookup()` logic, instead of duplicating it.
The generic version might be improved by implementing a hash lookup or
something along those lines.

Reviewed By: martong, Szelethus

Differential Revision: https://reviews.llvm.org/D113589

2 years ago[LV] Remove obsolete comment about creating a dummy block (NFC)
Florian Hahn [Fri, 19 Nov 2021 17:17:03 +0000 (17:17 +0000)]
[LV] Remove obsolete comment about creating a dummy block (NFC)

No dummy pre-entry block is created since a6c4969f5f45. The comment is
stale now and can be removed.

Mentioned by @Ayal in D113182.

2 years ago[MLIR] Make the ROCM integration tests runnable
Krzysztof Drewniak [Thu, 18 Nov 2021 20:21:33 +0000 (20:21 +0000)]
[MLIR] Make the ROCM integration tests runnable

- Move the #define s to the GPU Transform library from GPU Ops so that
SerializeToHsaco is non-trivially compiled

- Add required includes to SerializeToHsaco

- Move MCSubtargetInfo creation to the correct point in the
compilation process

- Change mlir in ROCM tests to account for renamed/moved ops

Differential Revision: https://reviews.llvm.org/D114184

2 years agoSkip tests when compiler with older versions of clang
Adrian Prantl [Fri, 19 Nov 2021 17:05:38 +0000 (09:05 -0800)]
Skip tests when compiler with older versions of clang