Sam McCall [Mon, 21 Mar 2022 13:04:20 +0000 (14:04 +0100)]
[pseudo] fix typo'd test assertions
Simon Pilgrim [Mon, 21 Mar 2022 13:02:30 +0000 (13:02 +0000)]
[SDAG] enable binop identity constant folds for shifts
Add shl/srl/sra to the list of ops that we canonicalize with a select to expose an identity merge
Differential Revision: https://reviews.llvm.org/D122070
Sven van Haastregt [Mon, 21 Mar 2022 12:45:58 +0000 (12:45 +0000)]
[OpenCL] Guard write_only image3d_t with TypeExtension
Ensure that the TypeExtension of an `ImageType` is also taken into
account when generating `OpenCLBuiltins.inc`.
This aligns the handling of the `write_only image3d_t` type for
`-fdeclare-opencl-builtins` with opencl-c.h with respect to the
`cl_khr_3d_image_writes` extension.
Since the `write_only image3d_t` type is not available when the
extension is disabled, this commit does not add a test to
`SemaOpenCL/fdeclare-opencl-builtins.cl`.
Dmitry Preobrazhensky [Mon, 21 Mar 2022 12:23:44 +0000 (15:23 +0300)]
[AMDGPU][MC][NFC] Refactored sendmsg(...) handling
Differential Revision: https://reviews.llvm.org/D121995
Sophia [Fri, 18 Mar 2022 02:14:50 +0000 (10:14 +0800)]
[LV] Fix typo in comment
Reviewed by: fhahn (Florian Hahn)
Differential Revision: https://reviews.llvm.org/D121781
Markus Böck [Mon, 21 Mar 2022 12:26:00 +0000 (13:26 +0100)]
[mlir] Fix block merging with the result of a terminator
When the current implementation merges two blocks that have operands defined outside of their block respectively, it will merge these by adding a block argument in the resulting merged block and adding successor arguments to the predecessors.
There is a special case where this is incorrect however: If one of predecessors terminator produce the operand, inserting the block argument and updating the predecessor would lead to the terminator using its own result as successor argument.
IR Example:
```
%0 = "test.producing_br"()[^bb1, ^bb2] {
operand_segment_sizes = dense<0> : vector<2 x i32>
} : () -> i32
^bb1:
"test.br"(%0)[^bb4] : (i32) -> ()
```
where `^bb1` is then merged with another block would lead to:
```
%0 = "test.producing_br"(%0)[^bb1, ^bb2]
```
This patch fixes that issue during clustering by making sure that if the operand is from an outside block, that it is not produced by the terminator of a predecessor.
Differential Revision: https://reviews.llvm.org/D121988
Nikita Popov [Mon, 21 Mar 2022 12:20:32 +0000 (13:20 +0100)]
[Utils] Fix %S substitution
%S refers to the directory of %s, not to the cwd. This is mostly
handled correctly, but update_cc_test_checks.py used for the wrong
path for non-FileCheck RUN lines.
Alexander Belyaev [Mon, 21 Mar 2022 10:01:50 +0000 (11:01 +0100)]
[mlir] Add a function to print C-strings to RunnerUtils.cpp.
Differential Revision: https://reviews.llvm.org/D122066
Simon Pilgrim [Mon, 21 Mar 2022 11:44:12 +0000 (11:44 +0000)]
[X86] Add nounwind to adc/sbb tests to prevent cfi noise
Jay Foad [Mon, 21 Mar 2022 11:41:22 +0000 (11:41 +0000)]
[AMDGPU] Add an agpr copy propagation test
Jay Foad [Mon, 21 Mar 2022 11:40:42 +0000 (11:40 +0000)]
[AMDGPU] Update checks in agpr-copy-propagation.mir
Jez Ng [Wed, 16 Mar 2022 21:53:02 +0000 (17:53 -0400)]
[lld-macho][nfc] Add comment explaining why a cast<> is safe
Jez Ng [Wed, 16 Mar 2022 22:05:32 +0000 (18:05 -0400)]
[lld-macho][nfc] Have findContainingSubsection take a Section
... instead of an instance of `Subsections`.
This simplifies the code slightly since all its callsites have a Section
instance anyway.
Kristina Bessonova [Mon, 21 Mar 2022 11:21:24 +0000 (13:21 +0200)]
[clang] Fix wrong -Wunused-local-typedef warning within a template function
Partially fixes PR24883.
The patch sets Reference bit while instantiating a typedef if it
previously was found referenced.
Reviewed By: thakis
Differential Revision: https://reviews.llvm.org/D114382
Evgeny Shulgin [Sat, 19 Mar 2022 18:23:47 +0000 (21:23 +0300)]
[clang-tidy] Skip parentheses in `readability-make-member-function-const`
The checker should ignore parentheses when looking whether the
function should be marked as `const`.
Fixes https://github.com/llvm/llvm-project/issues/52838
Reviewed By: mgehre-amd, njames93
Differential Revision: https://reviews.llvm.org/D122075
Jay Foad [Mon, 21 Mar 2022 11:14:17 +0000 (11:14 +0000)]
[AMDGPU] SIInstrInfo::verifyInstruction tweaks. NFCI.
Simplify some for loops. Don't bother checking src2 operand for
writelane because it doesn't have one. Check all VALU instructions,
not just VOP1/2/3/C/SDWA.
Shraiysh Vaishay [Mon, 21 Mar 2022 10:50:54 +0000 (16:20 +0530)]
[mlir][OpenMP] Added translation from `omp.atomic.capture` to LLVM IR
This patch adds translation from `omp.atomic.capture` to LLVM IR. Also
added tests for the same.
Depends on D121546
Reviewed By: ftynse
Differential Revision: https://reviews.llvm.org/D121554
Nikita Popov [Mon, 21 Mar 2022 10:54:39 +0000 (11:54 +0100)]
[CodeGen][OpenMP] Use correct type in EmitLoadOfPointer()
Rather than using a dummy void pointer type, we should specify the
correct private type and perform the bitcast beforehand rather than
afterwards. This way, the Address will have correct alignment
information.
Simon Pilgrim [Mon, 21 Mar 2022 10:56:27 +0000 (10:56 +0000)]
[X86] combineAddOrSubToADCOrSBB - Fold ADD/SUB + (AND(SRL(X,Y),1) -> ADC/SBB+BT(X,Y)
As suggested on PR35908, if we are adding/subtracting an extracted bit, attempt to use BT instead to fold the op and use a ADC/SBB op.
Differential Revision: https://reviews.llvm.org/D122084
Shraiysh Vaishay [Mon, 21 Mar 2022 10:08:45 +0000 (15:38 +0530)]
[OpenMP][IRBuilder] Fix emitAtomicUpdate conditions
This patch fixes the condition for emitting atomic update using
`atomicrmw` instruction or compare-exchange loop.
Reviewed By: ftynse
Differential Revision: https://reviews.llvm.org/D121546
Simon Pilgrim [Mon, 21 Mar 2022 10:44:05 +0000 (10:44 +0000)]
[X86] Add (x - y - ((z & m) >> s)) sub -> sbb test case for D122084
serge-sans-paille [Fri, 18 Mar 2022 13:37:43 +0000 (14:37 +0100)]
[instcombine] Support and test __builtin_object_size interaction with __strdup and __strndup
Differential Revision: https://reviews.llvm.org/D122005
serge-sans-paille [Thu, 17 Mar 2022 10:18:54 +0000 (11:18 +0100)]
[LowerConstantIntrinsics] Support phi operand in __builtin_object_size folder
The implementation is just a generalization of the Select handler.
We're no trying to be smart and compute any kind of fixed point.
Differential Revision: https://reviews.llvm.org/D121897
Florian Hahn [Mon, 21 Mar 2022 10:07:25 +0000 (10:07 +0000)]
[LV] Remove unneeded Loop argument from completeLoopSkeleton. (NFCI)
completeLoopSkeleton only uses its loop argument only to get the
pre-header, but the pre-header is already known (we created/cached it
earlier). Remove the unneeded loop argument.
Marek Kurdej [Mon, 21 Mar 2022 09:24:56 +0000 (10:24 +0100)]
[clang-format] [doc] Improve BraceWrapping documentation.
Martin Storsjö [Mon, 7 Mar 2022 21:35:45 +0000 (23:35 +0200)]
[libcxx] [ci] Check that Windows static libraries don't contain dllexports
Differential Revision: https://reviews.llvm.org/D121164
Nikita Popov [Mon, 21 Mar 2022 09:11:03 +0000 (10:11 +0100)]
[Docs] Update opaque pointers docs (NFC)
Mention automatic enablement of opaque pointers mode that was
recently implemented. Update wording in the transition state,
because it seems like my overly cautious wording has given some
people an incorrect impression of the state of opaque pointer
support in clang.
Nikita Popov [Mon, 21 Mar 2022 09:06:04 +0000 (10:06 +0100)]
[Docs] Fix reference (NFC)
Marek Kurdej [Fri, 18 Mar 2022 13:28:31 +0000 (14:28 +0100)]
[clang-format] Use range-for loop with drop_end. NFC.
Thomas Symalla [Mon, 21 Mar 2022 08:49:30 +0000 (09:49 +0100)]
Revert "[AMDGPU] Improve v_cmpx usage on GFX10.3."
This reverts commit
011c64191ef9ccc6538d52f4b57f98f37d4ea36e and
e725e2afe02e18398525652c9bceda1eb055ea64.
Differential Revision: https://reviews.llvm.org/D122117
Marek Kurdej [Fri, 18 Mar 2022 13:18:37 +0000 (14:18 +0100)]
[ADT] Add drop_end.
This patch adds drop_end that is analogical to drop_begin.
It tries to fill the functional gap where one could drop first elements but not the last ones.
The need for it came in when refactoring clang-format.
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D122009
Thomas Symalla [Mon, 21 Mar 2022 08:37:22 +0000 (09:37 +0100)]
[AMDGPU] [NFC] Fix missing include.
Thomas Symalla [Tue, 1 Feb 2022 09:28:18 +0000 (10:28 +0100)]
[AMDGPU] Improve v_cmpx usage on GFX10.3.
On GFX10.3 targets, the following instruction sequence
v_cmp_* SGPR, ...
s_and_saveexec ..., SGPR
leads to a fairly long stall caused by a VALU write to a SGPR and having the
following SALU wait for the SGPR.
An equivalent sequence is to save the exec mask manually instead of letting
s_and_saveexec do the work and use a v_cmpx instruction instead to do the
comparison.
This patch modifies the SIOptimizeExecMasking pass as this is the last position
where s_and_saveexec instructions are inserted. It does the transformation by
trying to find the pattern, extracting the operands and generating the new
instruction sequence.
It also changes some existing lit tests and introduces a few new tests to show
the changed behavior on GFX10.3 targets.
Reviewed By: sebastian-ne, critson
Differential Revision: https://reviews.llvm.org/D119696
Alisamar Husain [Mon, 21 Mar 2022 07:38:40 +0000 (13:08 +0530)]
[tests][intelpt] Fix outdated trace load test
Differential Revision: https://reviews.llvm.org/D122114
LLVM GN Syncbot [Mon, 21 Mar 2022 07:47:10 +0000 (07:47 +0000)]
[gn build] Port
9ada761be3b9
Adrian Kuegel [Mon, 21 Mar 2022 07:41:17 +0000 (08:41 +0100)]
[clang][Bazel] Add missing dependency from symbol_graph to llvm:support.
This did not show up as build error because the build also works if the
dependency is transitively available. But there should be a direct
dependency anyway.
Chen Zheng [Mon, 21 Mar 2022 07:38:46 +0000 (03:38 -0400)]
[PowerPC][NFC] rename file for PPCCTRLoopsVerify pass.
Rename file for PPCCTRLoopsVerify pass from PPCCTRLoops.cpp
to PPCCTRLoopsVerify.cpp.
There will be a new file PPCCTRLoops.cpp for PPC CTR loops
generation later.
Pavel Labath [Mon, 21 Mar 2022 07:26:34 +0000 (08:26 +0100)]
Revert "[lldb/test] Add events listener helper class to lldbtest"
It removes the "wait-until-event-thread-stops" logic, which makes
TestDiagnosticReporting.py flaky.
This reverts commits
09ff41a087760ea7e80b8e5390a05101c5a5b929 and
acdd41b4590935e39208a941fbac7889d778e8e5.
Siva Chandra Reddy [Thu, 17 Mar 2022 08:38:37 +0000 (08:38 +0000)]
[libc] Add a linux file implementation.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D121976
Alisamar Husain [Sun, 20 Mar 2022 07:31:31 +0000 (13:01 +0530)]
[trace][intelpt] Added total memory usage by decoded trace
This fails currently but the basics are there
Differential Revision: https://reviews.llvm.org/D122093
Kazu Hirata [Mon, 21 Mar 2022 06:11:06 +0000 (23:11 -0700)]
[CodeGen] Apply clang-tidy fixes for readability-redundant-smartptr-get (NFC)
Craig Topper [Mon, 21 Mar 2022 05:02:40 +0000 (22:02 -0700)]
[X86] Simplify the interface to getCondNoFromDesc.
Instead of taking a SkipDefs parameter, rename to getCondSrcNoFromDesc
and have it return the source operand number. Make getCondFromMI
responsible for adding the number of Defs for MI instructions.
While there remove some unneeded casts to unsigned and check for
negative numbers instead of explicitly -1. Less than 0 is easier
for a compiler to codegen.
Differential Revision: https://reviews.llvm.org/D122113
Carlos Alberto Enciso [Sun, 20 Mar 2022 07:40:32 +0000 (07:40 +0000)]
[llmv-pdbutil] Replace ExitOnError with explicit error handling.
At Sony we are developing llvm-dva
https://lists.llvm.org/pipermail/llvm-dev/2020-August/144174.html
For its PDB support, it requires functionality already present
in llvm-pdbutil.
We intend to move that functionaly into the PDB library to be
shared by both tools. That change will be done in 2 steps, that
will be submitted as 2 patches:
(1) Replace 'ExitOnError' with explicit error handling.
(2) Move the intended shared code to the PDB library.
This patch is for step (1).
As 'ExitOnError' is intended to be used only in tool code, replace
all occurrences in the code that will be moved to the PDB library
with explicit error handling.
Reviewed By: aganea, dblaikie, rnk
Differential Revision: https://reviews.llvm.org/D121801
Andrew Litteken [Mon, 14 Mar 2022 04:34:30 +0000 (23:34 -0500)]
[IROutliner] Do not outlined from functions with optnone
Since the IROutliner is performing an optimization, it should not outline from functions explicitly marked with optnone. This adds an extra check and test to make sure this does not occur.
Reviewers: paquette
Differential Revision: https://reviews.llvm.org/D121567
Shengchen Kan [Mon, 21 Mar 2022 04:05:05 +0000 (12:05 +0800)]
[X86][NFC] Run clang-format on
cb26730aaa8b, fix typo and remove redundant else
Shengchen Kan [Mon, 21 Mar 2022 03:28:24 +0000 (11:28 +0800)]
[X86][NFC] Unify implementations of getting condition code
jacquesguan [Fri, 18 Mar 2022 07:57:47 +0000 (15:57 +0800)]
[mlir][Arith] Add constant folder for right shift
Differential Revision: https://reviews.llvm.org/D121985
Kazu Hirata [Mon, 21 Mar 2022 01:21:40 +0000 (18:21 -0700)]
[Analysis] Apply clang-tidy fixes for readability-redundant-smartptr-get (NFC)
Florian Hahn [Sun, 20 Mar 2022 21:01:15 +0000 (21:01 +0000)]
[LV] Remove dead Loop argument from emitMemRuntimeChecks. (NFC)
Philip Reames [Sun, 20 Mar 2022 20:50:36 +0000 (13:50 -0700)]
[SLP] Explicit track required stacksave/alloca dependency
The semantics of an inalloca alloca instruction requires that it not be reordered with a preceeding stacksave intrinsic call. Unfortunately, there's no def/use edge or memory dependence edge. (THe memory point is slightly subtle, but in general a new allocation can't alias with a call which executes strictly before it comes into existance.)
I'd tried to tackle this same case previously in
689babdf6, but the fix chosen there turned out to be incomplete. As such, this change contains a fully revert of the first fix attempt.
This was noticed when investigating problems which surfaced with D118538, but this is definitely an existing bug. This time around, I managed to reduce a couple of additional cases, including one which was being actively miscompiled even without the new scheduling change. (See test diffs)
Compile time wise, we only spend extra time when seeing a stacksave (rare), and even then we walk the block at most once per schedule window extension. Likely a non-issue.
Aaron Puchert [Sun, 20 Mar 2022 19:59:06 +0000 (20:59 +0100)]
[PPCISelLowering] Avoid emitting calls to __multi3, __muloti4
After D108936, @llvm.smul.with.overflow.i64 was lowered to __multi3
instead of __mulodi4, which also doesn't exist on PowerPC 32-bit, not
even with compiler-rt. Block it as well so that we get inline code.
Because libgcc doesn't have __muloti4, we block that as well.
Fixes #54460.
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D122090
Kazu Hirata [Sun, 20 Mar 2022 17:41:22 +0000 (10:41 -0700)]
[Transform] Apply clang-tidy fixes for readability-redundant-smartptr-get (NFC)
Mark de Wever [Sun, 20 Mar 2022 13:15:00 +0000 (14:15 +0100)]
[libc++][test][NFC] Remove libcpp-no-concepts.
This is no longer needed.
Reviewed By: #libc, philnik
Differential Revision: https://reviews.llvm.org/D122099
Chen Zheng [Sun, 20 Mar 2022 13:58:41 +0000 (09:58 -0400)]
[PowerPC][NFC] use right hardware loop intrinsics in test case
esmeyi [Sun, 20 Mar 2022 13:31:29 +0000 (09:31 -0400)]
[XCOFF] support XCOFFObjectWriter for fileHeader and sectionHeaders in 64-bit XCOFF.
This is the first patch to enable the XCOFF64 object writer.
Currently only fileHeader and sectionHeaders are supported.
Reviewed By: jhenderson, DiggerLin
Differential Revision: https://reviews.llvm.org/D120861
Michel Weber [Sun, 20 Mar 2022 12:59:05 +0000 (12:59 +0000)]
[MLIR][Presburger] remove redundant constraints in coalesce
This patch improves the representation size of individual
`IntegerRelation`s by calling the function
`IntegerRelation::removeRedundantConstraints`. While this is only a
slight optimization in the current version, it will be necessary for
patches to come.
Reviewed By: arjunp
Differential Revision: https://reviews.llvm.org/D121989
Luo, Yuanke [Mon, 14 Mar 2022 00:27:30 +0000 (08:27 +0800)]
enable binop identity constant folds for add
Differential Revision: https://reviews.llvm.org/D119654
Shengchen Kan [Sun, 20 Mar 2022 10:38:09 +0000 (18:38 +0800)]
[X86] Simplify function isDataInvariant by using X86MnemonicTables
This is not a NFC change b/c we add more instructions like
IMUL16/32/64r, MOV16ao16 and MOV16rr_REV etc to the list.
But I think it's reasonable.
Reviewed By: Amir
Differential Revision: https://reviews.llvm.org/D122063
Florian Hahn [Sun, 20 Mar 2022 10:11:40 +0000 (10:11 +0000)]
[VPlan] Add test for VPExpandSCEVRecipe printing.
Simon Pilgrim [Sun, 20 Mar 2022 09:31:52 +0000 (09:31 +0000)]
[X86] Add test add with bit0 extraction and improve comments
Based on feedback from D122084
Simon Pilgrim [Sat, 19 Mar 2022 21:09:43 +0000 (21:09 +0000)]
[X86] combineAddOrSubToADCOrSBB - split to more cleanly handle commuted variants.
Split combineAddOrSubToADCOrSBB into wrapper (which handles ADDs with commuted args) and the real combine, which no longer has to account for commutation.
I'm intending to extend combineAddOrSubToADCOrSBB to detect patterns other than just X86ISD::SETCC, so we need to detect all patterns without detecting them as part of a commutation swap.
Shengchen Kan [Sun, 20 Mar 2022 07:22:02 +0000 (15:22 +0800)]
[X86][NFC] Generate fields and getters for subtarget features
Non-duplicated comments are moved from X86Subtarget.h to X86.td.
This is a follow-up patch for D120906.
Alisamar Husain [Sat, 19 Mar 2022 19:58:04 +0000 (01:28 +0530)]
[trace][intelpt] Instruction count in trace info
Added a line to `thread trace dump info` results which shows total number of instructions executed until now.
Differential Revision: https://reviews.llvm.org/D122076
Shengchen Kan [Sun, 20 Mar 2022 05:21:25 +0000 (13:21 +0800)]
[X86][NFC] Remove unused variable UseAA
Shengchen Kan [Sun, 20 Mar 2022 05:14:13 +0000 (13:14 +0800)]
[X86][NFC] Remove unused feature UseAA
Shengchen Kan [Sun, 20 Mar 2022 04:00:25 +0000 (12:00 +0800)]
[X86][NFC] Rename hasCMOV() to canUseCMOV(), hasLAHFSAHF() to canUseLAHFSAHF()
To make them less like other feature functions.
This is a follow-up patch for D121978.
Craig Topper [Sat, 19 Mar 2022 01:33:30 +0000 (18:33 -0700)]
[SelectionDAG][RISCV] Make RegsForValue::getCopyToRegs explicitly zero_extend constants.
ComputePHILiveOutRegInfo assumes that constant incoming values to
Phis will be zero extended if they aren't a legal type. To guarantee
that we should zero_extend rather than any_extend constants.
This fixes a bug for RISCV where any_extend of constants can be
treated as a sign_extend.
Differential Revision: https://reviews.llvm.org/D122053
Craig Topper [Sat, 19 Mar 2022 01:32:23 +0000 (18:32 -0700)]
[RISCV] Add test case for miscompile caused by treating ANY_EXTEND of constants as SIGN_EXTEND.
The code that inserts AssertZExt based on predecessor information assumes
constants are zero extended for phi incoming values this allows
AssertZExt to be created in blocks consuming a Phi.
SelectionDAG::getNode treats any_extend of i32 constants as sext for RISCV.
The code that creates phi incoming values in the predecessors creates an
any_extend for the constants which then gets treated as a sext by getNode.
This makes the AssertZExt incorrect and can cause zexts to be
incorrectly removed.
This bug was introduced by D105918
Differential Revision: https://reviews.llvm.org/D122052
Philip Reames [Sun, 20 Mar 2022 01:23:03 +0000 (18:23 -0700)]
[slp,tests] Consolidate two test files into one
There are some slight changes to the test lines due to different cost threshold choices in the two command lines, but I don't believe these to be interesting the purpose of the tests.
Jacques Pienaar [Sun, 20 Mar 2022 00:53:37 +0000 (17:53 -0700)]
[bazel][mlir] Add MLIR PDLL LSP server target
Add targets for PDLL LSP server.
Philip Reames [Sun, 20 Mar 2022 01:03:57 +0000 (18:03 -0700)]
[tests, SLP] Add coverage for missing dependencies for stacksave intrinsics
The existing scheduling doesn't account for the scheduling restrictions implied by inalloca allocas combined with stacksave/stackrestore. This adds coverage including one currently miscompiling case.
Jon Chesterfield [Sun, 20 Mar 2022 00:57:20 +0000 (00:57 +0000)]
Revert "[amdgpu][nfc] Pass function instead of module to allocateModuleLDSGlobal"
Reconsidered, better to handle per-function state in the constructor as before.
This reverts commit
98e474c1b3210d90e313457bf6a6e39a7edb4d2b.
Will Dietz [Sat, 19 Mar 2022 21:53:59 +0000 (16:53 -0500)]
mlir: set CMAKE_INCLUDE_CURRENT_DIR to fix out-of-tree builds
This option tells CMake to add current source and binary
directories to the include path for each directory[1].
Required include directories from build tree (for generated
files) were previously added in `mlir_tablegen` but this was
changed in
03078ec20b12605fd4dfd9fe9c98a26c9d2286d7 .
These are still needed, however, for out-of-tree builds
that don't build as part of LLVM (via LLVM_ENABLE_PROJECTS).
Building as part of LLVM works regardless, AFAICT,
because LLVM sets this option and so the MLIR build inherits it.
FWIW, various other (in-tree) LLVM projects set this as well.
And of course this fixes the out-of-tree
mlir-by-itself build scenario I'm using.
[1] https://cmake.org/cmake/help/latest/variable/CMAKE_INCLUDE_CURRENT_DIR.html
Reviewed By: mehdi_amini
Differential Revision: https://reviews.llvm.org/D122088
River Riddle [Sat, 19 Mar 2022 20:38:27 +0000 (13:38 -0700)]
[mlir:PDLL][NFC] Remove a dead comment about constant params
These were removed, and the FIXME is no longer relevant.
Philip Reames [Fri, 18 Mar 2022 22:25:10 +0000 (15:25 -0700)]
[SLP] Respect control dependence within a block during scheduling
This fixes an active miscompile visible in the test changes. The basic problem is that the scheduling dependency graph didn't have any edges for control dependence within a single basic block. The result is that we could (and in some rare cases *did*) perform reorderings within a block which could introduce new undefined behavior along paths which didn't previously contain any.
Impact wise, we have two major cases where control is not guaranteed to reach a later instruction in the block: may throw calls, and calls containing infinite loops.
* The former case was mostly covered by the memory dependencies, and to trigger require a function which can throw, but not write to memory. In theory, such a case is possible, but not likely in practice.
* The later case is likely more of an issue in practice. After this code was first written, we changed the IR semantics to allow well defined infinite loops without satisifying mustprogress. Even for C/C++ - which do imply mustprogress - recent changes to how we treat atomics (e.g. an atomic read does not always imply a write) could expose this issue. I'm a bit shocked we don't seem to have a bug report which hit this in real code actually.
Compile time wise, this results in a single extra scan of the scheduling window in the common case. Since we stop scanning at the next instruction which isn't guaranteed to execute, no matter what order we traverse instructions in, we scan the block once. The exception to this is that when we extend the scheduling window downwards, we invalidate all dependencies, and thus rescan. So the potentially expensive case is when we a call in a big schedule window which is frequently extended. We could optimize this case (by caching the last instruction not guaranteeed to transfer execution and scanning only the extended window) and starting there), but I decided to leave the complexity until it mattered. That same case is already degenerate with memory dependences which is more expensive than the control dependence scan.
We could also consider combining the memory dependence and control dependence sets to reduce memory usage, but since it complicates the code slightly and makes debugging a bit harder, I went with the simplest scheme for now.
This was noticed while trying to understand the failures reported against D118538, but is not otherwise related to that change.
Tal Kedar [Sat, 19 Mar 2022 19:08:02 +0000 (19:08 +0000)]
[libSupport] make CallBacksToRun static local
In order to allow compiling with -Werror=global-constructors with c++20 and above.
Discussion: https://discourse.llvm.org/t/llvm-lib-support-signals-cpp-fails-to-compile-due-to-werror-global-constructors/61070
Reviewed By: mehdi_amini
Differential Revision: https://reviews.llvm.org/D122067
River Riddle [Mon, 14 Mar 2022 05:09:20 +0000 (22:09 -0700)]
[mlir:PDL] Remove the ConstantParams support from native Constraints/Rewrites
This support has never really worked well, and is incredibly clunky to
use (it effectively creates two argument APIs), and clunky to generate (it isn't
clear how we should actually expose this from PDL frontends). Treating these
as just attribute arguments is much much cleaner in every aspect of the stack.
If we need to optimize lots of constant parameters, it would be better to
investigate internal representation optimizations (e.g. batch attribute creation),
that do not affect the user (we want a clean external API).
Differential Revision: https://reviews.llvm.org/D121569
River Riddle [Fri, 11 Mar 2022 08:38:17 +0000 (00:38 -0800)]
[mlir][PDLL] Add signature help to the PDLL language server
This commit adds signature support to the language server,
and initially supports providing help for: operation operands and results,
and constraint/rewrite calls.
Differential Revision: https://reviews.llvm.org/D121545
River Riddle [Fri, 11 Mar 2022 08:32:49 +0000 (00:32 -0800)]
[mlir][PDLL] Add code completion to the PDLL language server
This commit adds code completion support to the language server,
and initially supports providing completions for: Member access,
attributes/constraint/dialect/operation names, and pattern metadata.
Differential Revision: https://reviews.llvm.org/D121544
River Riddle [Fri, 11 Mar 2022 08:23:39 +0000 (00:23 -0800)]
[mlir][PDLL] Add symbol support to the PDLL language server
This adds support for documenting the top-level "symbols",
e.g. patterns, constraints, rewrites, etc., within a PDLL file.
Differential Revision: https://reviews.llvm.org/D121543
River Riddle [Fri, 11 Mar 2022 08:18:44 +0000 (00:18 -0800)]
[mlir][PDLL] Add hover support to the PDLL language server
This adds support for providing information when hovering over
operation names, variables, patters, constraints, and rewrites.
Differential Revision: https://reviews.llvm.org/D121542
River Riddle [Fri, 11 Mar 2022 07:44:53 +0000 (23:44 -0800)]
[mlir][PDLL] Add an initial language server for PDLL
This commits adds a basic language server for PDLL to enable providing
language features in IDEs such as VSCode. This initial commit only
adds support for tracking definitions, references, and diagnostics, but
followup commits will build upon this to provide more significant behavior.
In addition to the server, this commit also updates mlir-vscode to support
the PDLL language and invoke the server.
Differential Revision: https://reviews.llvm.org/D121541
Florian Hahn [Sat, 19 Mar 2022 20:18:47 +0000 (20:18 +0000)]
[LV] Remove unnecessary uses of Loop* (NFC).
Update functions that previously took a loop pointer but only to get the
pre-header. Instead, pass the block directly. This removes the
requirement for the loop object to be created up-front.
Craig Topper [Sat, 19 Mar 2022 19:31:12 +0000 (12:31 -0700)]
[X86] Rename FeatureCMPXCHG8B/FeatureCMPXCHG16B to FeatureCX8/CX16 to match CPUID.
Rename hasCMPXCHG16B() to canUseCMPXCHG16B() to make it less like other
feature functions. Add a similar canUseCMPXCHG8B() that aliases
hasCX8() to keep similar naming.
Differential Revision: https://reviews.llvm.org/D121978
Simon Pilgrim [Sat, 19 Mar 2022 19:20:12 +0000 (19:20 +0000)]
[X86] Add some initial test coverage for PR35908 add/sub + bittest patterns
Johannes Doerfert [Fri, 18 Mar 2022 21:53:40 +0000 (16:53 -0500)]
[OpenMP][FIX] Do not crash when kernels are debug wrapper functions
With debug information enabled (-g) Clang will wrap the actual target
region into a new function which is called from the "kernel". The problem
is that the "kernel" is now basically a wrapper without all the things
we expect. More importantly, if we end up asking for an AAKernelInfo
for the "target region function" we might try to turn it into SPMD mode.
That used to cause an assertion as that function doesn't have an
appropriately named `_exec_mode` global. While the global is going away
soon we still need to make sure to properly handle this case, e.g.,
perform optimizations reliably.
Differential Revision: https://reviews.llvm.org/D122043
Itay Bookstein [Sat, 19 Mar 2022 18:24:38 +0000 (20:24 +0200)]
[docs] Fix a couple of typos
Signed-off-by: Itay Bookstein <ibookstein@gmail.com>
Simon Pilgrim [Sat, 19 Mar 2022 17:56:06 +0000 (17:56 +0000)]
[X86] combineAddOrSubToADCOrSBB - pull out repeated Y.getOperand(1) calls. NFC.
Nikolas Klauser [Thu, 10 Mar 2022 19:15:23 +0000 (20:15 +0100)]
[libc++] Prepare string tests for constexpr
These are the last™ changes to the tests for constexpr preparation.
Reviewed By: Quuxplusone, #libc, Mordante
Spies: Mordante, EricWF, libcxx-commits
Differential Revision: https://reviews.llvm.org/D120951
Alisamar Husain [Sat, 19 Mar 2022 16:49:13 +0000 (22:19 +0530)]
[docs] Fixed minor ordering issue
Differential Revision: https://reviews.llvm.org/D122073
Simon Pilgrim [Sat, 19 Mar 2022 16:51:00 +0000 (16:51 +0000)]
[X86] createShuffleMaskFromVSELECT - handle BLENDV constant masks as well as VSELECT constant masks
Handle constant masks for both vselect nodes (mask != 0) and blendv nodes (mask < 0)
Philip Reames [Sat, 19 Mar 2022 16:41:14 +0000 (09:41 -0700)]
[SLP,tests] Add coverage showing need for control dependencies during scheduling
Jon Chesterfield [Sat, 19 Mar 2022 16:10:05 +0000 (16:10 +0000)]
[amdgpu][nfc] Pass function instead of module to allocateModuleLDSGlobal
Simon Pilgrim [Sat, 19 Mar 2022 16:31:15 +0000 (16:31 +0000)]
[X86] combineSelect - don't constant fold BLENDV nodes like VSELECT
If a X86ISD::BLENDV op appears before legalization (in this test case due to the icmp_slt x, 0) its constant mask was being treated as a vselect mask (mask != 0) instead of blendv (mask < 0)
This just prevents constant folding entirely for non-VSELECT ops.
Simon Pilgrim [Sat, 19 Mar 2022 16:26:20 +0000 (16:26 +0000)]
[X86] Add test showing a bug where a BLENDV mask is being constant folded as VSELECT mask
combineSelect doesn't expect X86ISD::BLENDV ops to appear before legalization and is treating the constant mask as a vselect mask (mask != 0) instead of blendv (mask < 0)
Florian Hahn [Sat, 19 Mar 2022 16:02:41 +0000 (16:02 +0000)]
[VPlan] Improve pattern in vplan-printing.ll check line.
The existing pattern only matched a single value, which breaks if the
numbering slightly changes.
Simon Pilgrim [Sat, 19 Mar 2022 15:41:25 +0000 (15:41 +0000)]
[X86] Update remaining AVX512 VBMI2 VL intrinsic tests to avoid adds
As noticed in D119654, by adding the masked intrinsics results together we can end up with the selects being canonicalized away from the intrinsic - this isn't what we want to test here so replace with a insertvalue chain into a aggregate instead to retain all the results.
Simon Pilgrim [Sat, 19 Mar 2022 14:03:03 +0000 (14:03 +0000)]
[X86] LowerAndToBT - fold BT(NOT(X),Y) -> BT(X,Y) and flip the CondCode
Simon Pilgrim [Sat, 19 Mar 2022 13:31:05 +0000 (13:31 +0000)]
[X86][SSE] Add initial support for extracting non-constant bool vector elements
We can use MOVMSK+TEST/BT to extract individual bool elements even if the index isn't constant
This relies on combineBitcastvxi1 so some AVX512 cases still aren't optimized as they avoid MOVMSK usage.
Simon Pilgrim [Sat, 19 Mar 2022 13:25:21 +0000 (13:25 +0000)]
[X86][SSE] Add tests for non-constant bool vector extractions
We should be able to perform this with MOVMSK+TEST/BT instead of spilling to stack