platform/upstream/llvm.git
3 years ago[mlir] Fix scf.for single iteration canonicalization check
Lei Zhang [Tue, 2 Feb 2021 13:30:10 +0000 (08:30 -0500)]
[mlir] Fix scf.for single iteration canonicalization check

We should be check whether lb + step >= ub to determine
whether this is a single iteration. Previously we were
checking lb + lb >= ub.

Differential Revision: https://reviews.llvm.org/D95440

3 years ago[AIX] Improve option processing for mabi=vec-extabi and mabi=vec=defaul
Zarko Todorovski [Tue, 2 Feb 2021 15:56:15 +0000 (10:56 -0500)]
[AIX] Improve option processing for mabi=vec-extabi and mabi=vec=defaul

Opening this revision to better address comments by @hubert.reinterpretcast in https://reviews.llvm.org/rGcaaaebcde462

Reviewed By: hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D95702

3 years ago[CSSPGO] Factor out common part for CSSPGO inline and AFDO inline
Wenlei He [Wed, 20 Jan 2021 07:29:14 +0000 (23:29 -0800)]
[CSSPGO] Factor out common part for CSSPGO inline and AFDO inline

Refactoring SampleProfileLoader::inlineHotFunctions to use helpers from CSSPGO inlining and reduce similar code in the inlining loop, plus minor cleanup for AFDO path.

This is resubmit of D95024, with build break and overtighten assertion fixed.

Test Plan:

3 years ago[OpenMP][NFC] Adding FAQ Entry for errors with static libraries
Joseph Huber [Tue, 2 Feb 2021 15:48:36 +0000 (10:48 -0500)]
[OpenMP][NFC] Adding FAQ Entry for errors with static libraries

3 years ago[PowerPC] Materialize 34 bit constants with pli on Power 10.
Stefan Pintilie [Tue, 2 Feb 2021 12:07:50 +0000 (06:07 -0600)]
[PowerPC] Materialize 34 bit constants with pli on Power 10.

NOTE: This patch was originally written by Anil Mahmud. His code has been
rebased but otherwise left mostly unchanged.

A new instructon on Power 10 allows for the materialization of 34 bit
immediate values. This patch allows the compiler to take advantage of
the new instruction in this situation.

Reviewed By: amyk

Differential Revision: https://reviews.llvm.org/D92879

3 years ago[ARM] Add MVE insert-of-extract pattern
David Green [Tue, 2 Feb 2021 15:15:04 +0000 (15:15 +0000)]
[ARM] Add MVE insert-of-extract pattern

A v4i32 insert of an extract can become a simple lane move, as opposed
to round-tripping via a GPR. This adds a patterns that turns an v4i32
insert-extract pair into a EXTRACT_SUBREG/INSERT_SUBREG, with the
required COPY_TO_REGCLASS. These get better optimized into a simple lane
move by the rest of the backend.

Differential Revision: https://reviews.llvm.org/D95428

3 years agoEnsure that the matcher is instantiated
Stephen Kelly [Tue, 2 Feb 2021 15:11:40 +0000 (15:11 +0000)]
Ensure that the matcher is instantiated

Fix issue diagnosed by Windows linker.

3 years ago[OpenCL] Add diagnostics for references to functions
Anastasia Stulova [Tue, 2 Feb 2021 13:00:09 +0000 (13:00 +0000)]
[OpenCL] Add diagnostics for references to functions

Restrict use of references to functions as they can
result in non-conforming behavior.

Tags: #clang

Differential Revision: https://reviews.llvm.org/D95442

3 years ago[clang][PATCH][NFC] Correct test case related to review D95482
Melanie Blower [Tue, 2 Feb 2021 15:06:25 +0000 (07:06 -0800)]
[clang][PATCH][NFC] Correct test case related to review D95482

3 years ago[mlir] Put template specialization in the same namespace
Lei Zhang [Tue, 2 Feb 2021 15:03:29 +0000 (10:03 -0500)]
[mlir] Put template specialization in the same namespace

This should address GCC 5 failure due to specialization of
runStrategy in different namespace.

3 years ago[InstCombine] Host inversion out of ashr's value operand (PR48995)
Roman Lebedev [Tue, 2 Feb 2021 13:59:47 +0000 (16:59 +0300)]
[InstCombine] Host inversion out of ashr's value operand (PR48995)

This is a yet another hint that we will eventually need InstCombineInverter,
which would consistently sink inversions, but but for that we'll need
to consistently hoist inversions where possible, so let's do that here.

Example of a proof: https://alive2.llvm.org/ce/z/78SbDq

See https://bugs.llvm.org/show_bug.cgi?id=48995

3 years ago[NFC][InstCombine] Add tests for (~x) a>> y --> ~(x a>> y) fold (PR48995)
Roman Lebedev [Tue, 2 Feb 2021 13:54:55 +0000 (16:54 +0300)]
[NFC][InstCombine] Add tests for  (~x) a>> y  -->  ~(x a>> y)  fold (PR48995)

See https://bugs.llvm.org/show_bug.cgi?id=48995

3 years ago[AVR][clang] Fix a bug in AVR toolchain search paths
Ben Shi [Tue, 2 Feb 2021 14:45:52 +0000 (22:45 +0800)]
[AVR][clang] Fix a bug in AVR toolchain search paths

Reviewed By: dylanmckay, MaskRay

Differential Revision: https://reviews.llvm.org/D95529

3 years ago[clangd] Fix race in Global CDB shutdown
Sam McCall [Tue, 2 Feb 2021 14:20:18 +0000 (15:20 +0100)]
[clangd] Fix race in Global CDB shutdown

I believe the atomic write can be reordered after the notify, and that
seems to be happening on mac m1: http://45.33.8.238/macm1/2654/step_8.txt
In practice maybe seq_cst is enough? But no reason not to lock here.

https://bugs.llvm.org/show_bug.cgi?id=48998

3 years ago[ASTMatchers] Ignore parts of BindingDecls which are not spelled in source
Stephen Kelly [Sat, 30 Jan 2021 16:19:43 +0000 (16:19 +0000)]
[ASTMatchers] Ignore parts of BindingDecls which are not spelled in source

Differential Revision: https://reviews.llvm.org/D95740

3 years agoRevert "[InstrProfiling] Use !associated metadata for counters, data and values"
Tom Weaver [Tue, 2 Feb 2021 14:19:31 +0000 (14:19 +0000)]
Revert "[InstrProfiling] Use !associated metadata for counters, data and values"

This reverts commit df3e39f60b356ca9dbfc11e96e5fdda30afa7acb.

introduced failing test instrprof-gc-sections.c
causing build bot to fail:
http://lab.llvm.org:8011/#/builders/53/builds/1184

3 years ago[ARM] Extra shuffle tests. NFC
David Green [Tue, 2 Feb 2021 14:16:42 +0000 (14:16 +0000)]
[ARM] Extra shuffle tests. NFC

3 years ago[clang-format] Add case aware include sorting.
Kent Sommer [Tue, 2 Feb 2021 13:41:55 +0000 (14:41 +0100)]
[clang-format] Add case aware include sorting.

Adds an option to [clang-format] which sorts headers in an alphabetical manner using case only for tie-breakers. The options is off by default in favor of the current ASCIIbetical sorting style.

Reviewed By: MyDeveloperDay, curdeius, HazardyKnusperkeks

Differential Revision: https://reviews.llvm.org/D95017

3 years ago[ASTMatchers] Add matchers for decomposition decls
Stephen Kelly [Sat, 30 Jan 2021 15:50:44 +0000 (15:50 +0000)]
[ASTMatchers] Add matchers for decomposition decls

Differential Revision: https://reviews.llvm.org/D95739

3 years ago[ARM] Select VINS from vector inserts
David Green [Tue, 2 Feb 2021 13:50:02 +0000 (13:50 +0000)]
[ARM] Select VINS from vector inserts

This patch adds tablegen patterns for pairs of i16/f16 insert/extracts.
If we are inserting into two adjacent vector lanes (0 and 1 for
example), we can use either a vmov;vins or vmovx;vins to insert the pair
together, avoiding a round-trip from GRP registers. This is quite a
large patterns with a number of EXTRACT_SUBREG/INSERT_SUBREG/
COPY_TO_REGCLASS nodes, but hopefully as most of those become copies all
that will be cleaned up by further optimizations.

The VINS pattern was also adjusted to allow it to represent that it is
inserting into the top half of an existing register.

Differential Revision: https://reviews.llvm.org/D95381

3 years ago[X86][SSE] LowerINSERT_VECTOR_ELT - pull out repeated EltSizeInBits calls. NFCI.
Simon Pilgrim [Tue, 2 Feb 2021 12:52:10 +0000 (12:52 +0000)]
[X86][SSE] LowerINSERT_VECTOR_ELT - pull out repeated EltSizeInBits calls. NFCI.

3 years agoRevert "[lldb] Use current execution context in SBDebugger"
Raphael Isemann [Tue, 2 Feb 2021 13:41:41 +0000 (14:41 +0100)]
Revert "[lldb] Use current execution context in SBDebugger"

This reverts commit 754ab803b8dc659e3645d369d1b5d6d2f97be29e.

As pointed out in https://reviews.llvm.org/D95761, this patch could lead to
having the wrong execution context in some situations (thanks Jim!).

D92164 is addressing the same issue and will replace this patch, so I'll
revert this one.

3 years agoNFC: Migrate SpeculateAroundPHIs to work on InstructionCost
Sander de Smalen [Tue, 2 Feb 2021 12:50:18 +0000 (12:50 +0000)]
NFC: Migrate SpeculateAroundPHIs to work on InstructionCost

This patch migrates cost values and arithmetic to work on InstructionCost.
When the interfaces to TargetTransformInfo are changed, any InstructionCost
state will propagate naturally.

See this patch for the introduction of the type: https://reviews.llvm.org/D91174
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2020-November/146408.html

Reviewed By: ctetreau

Differential Revision: https://reviews.llvm.org/D95353

3 years agoNFC: Migrate SimpleLoopUnswitch to work on InstructionCost
Sander de Smalen [Tue, 2 Feb 2021 12:28:20 +0000 (12:28 +0000)]
NFC: Migrate SimpleLoopUnswitch to work on InstructionCost

This patch migrates cost values and arithmetic to work on InstructionCost.
When the interfaces to TargetTransformInfo are changed, any InstructionCost
state will propagate naturally.

See this patch for the introduction of the type: https://reviews.llvm.org/D91174
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2020-November/146408.html

Reviewed By: david-arm

Differential Revision: https://reviews.llvm.org/D95352

3 years ago[ASTMatchers] Fix matching after generic top-level matcher
Stephen Kelly [Sat, 30 Jan 2021 01:36:40 +0000 (01:36 +0000)]
[ASTMatchers] Fix matching after generic top-level matcher

With a matcher like

  expr(anyOf(integerLiteral(equals(42)), unless(expr())))

and code such as

  struct B {
    B(int);
  };

  B func1() { return 42; }

the top-level expr() would match each of the nodes which are not spelled
in the source and then ignore-traverse to match the integerLiteral node.
This would result in multiple results reported for the integerLiteral.

Fix that by only running matching logic on nodes which are not skipped
with the top-level matcher.

Differential Revision: https://reviews.llvm.org/D95735

3 years ago[mlir][Linalg] Fix and properly test CodegenStrategy API
Nicolas Vasilache [Tue, 2 Feb 2021 12:16:51 +0000 (12:16 +0000)]
[mlir][Linalg] Fix and properly test CodegenStrategy API

Fix a bug that was introduced where calling the codegen strategy with actual concrete C++ Op types did not trigger the expected behavior.
Also introduce a test for the behavior that was missing.

Differential Revision: https://reviews.llvm.org/D95863

3 years agoRevert "[test] Default clang/test to FileCheck --allow-unused-prefixes=false"
Nico Weber [Tue, 2 Feb 2021 12:38:44 +0000 (07:38 -0500)]
Revert "[test] Default clang/test to FileCheck --allow-unused-prefixes=false"

This reverts commit 80f539526eec31f03aadd96753648686312b1ad1.
Many test failures on mac: http://45.33.8.238/macm1/2772/summary.html
One on win: http://45.33.8.238/win/32442/summary.html

3 years ago[clangd] Report only decl of overridding method in xref.
Utkarsh Saxena [Mon, 1 Feb 2021 20:17:53 +0000 (21:17 +0100)]
[clangd] Report only decl of overridding method in xref.

See: https://github.com/clangd/clangd/issues/668

```
struct A { virtual void foo() = 0; };
struct B : A { void foo() override; };
```

Find refs on `A::foo()` will show:
- decls of `A::foo()`
- decls of `B::foo()`
- refs to `A::foo()`
- no refs to `B::foo()`.

Differential Revision: https://reviews.llvm.org/D95812

3 years ago[mlir][Linalg] Fix unused variable warning in Release builds. NFC.
Benjamin Kramer [Tue, 2 Feb 2021 11:59:41 +0000 (12:59 +0100)]
[mlir][Linalg] Fix unused variable warning in Release builds. NFC.

3 years ago[AMDGPU][MC] Corrected parsing of optional modifiers
Dmitry Preobrazhensky [Tue, 2 Feb 2021 11:49:59 +0000 (14:49 +0300)]
[AMDGPU][MC] Corrected parsing of optional modifiers

Fixed bugs in parsing of "no*" modifiers and improved errors handling.
See https://bugs.llvm.org/show_bug.cgi?id=41282.

Differential Revision: https://reviews.llvm.org/D95675

3 years ago[X86][AVX512] Support variable-index vector insertion on AVX512 targets (PR47924)
Simon Pilgrim [Tue, 2 Feb 2021 11:40:39 +0000 (11:40 +0000)]
[X86][AVX512] Support variable-index vector insertion on AVX512 targets (PR47924)

With predicate masks, AVX512 can efficiently perform variable-index vector insertion with 2 broadcasts + 1 comparison, avoiding a lot of aliased memory traffic.

Differential Revision: https://reviews.llvm.org/D95779

3 years ago[X86] Fix disassembly of x86-64 GDTLS code sequence
Andrew Ng [Wed, 27 Jan 2021 16:47:21 +0000 (16:47 +0000)]
[X86] Fix disassembly of x86-64 GDTLS code sequence

For x86-64 the REX.w prefix takes precedence over any other size
override (i.e. 0x66). Therefore, for x86-64 when REX.w is present set
'hasOpSize' to false to ensure that any size override is ignored.

Fixes PR48901.

Differential Revision: https://reviews.llvm.org/D95682

3 years ago[mlir][Linalg] Refactor Linalg vectorization for better reuse and extensibility.
Nicolas Vasilache [Tue, 2 Feb 2021 11:19:21 +0000 (11:19 +0000)]
[mlir][Linalg] Refactor Linalg vectorization for better reuse and extensibility.

This revision unifies Linalg vectorization and paves the way for vectorization of Linalg ops with mixed-precision operations.
The new algorithm traverses the ops in the linalg block in order and avoids recursion.
It uses a BlockAndValueMapping to keep track of vectorized operations.

The revision makes the following modifications but is otherwise NFC:
1. vector.transfer_read are created eagerly and may appear in a different order than the original order.
2. a more progressive vectorization to vector.contract results in only the multiply operation being converted to `vector.contract %a, %b, %zero`, where `%zero` is a
constant of the proper type. Later vector canonicalizations are assumed to rewrite vector.contract %a, %b, %zero + add to a proper accumulate form.

Differential revision: https://reviews.llvm.org/D95797

3 years ago[X86][AVX] Add missing VEX_WIG tags from VPACKUSDW/VPHSUBD/VPCMPISTRI/VPCMPISTRM...
Simon Pilgrim [Tue, 2 Feb 2021 10:53:28 +0000 (10:53 +0000)]
[X86][AVX] Add missing VEX_WIG tags from VPACKUSDW/VPHSUBD/VPCMPISTRI/VPCMPISTRM/VPCMPESTRI/VPCMPESTRM

Fixes PR48877

Differential Revision: https://reviews.llvm.org/D95801

3 years ago[OpenCL] Change extension handling for -fdeclare-opencl-builtins
Sven van Haastregt [Tue, 2 Feb 2021 11:15:29 +0000 (11:15 +0000)]
[OpenCL] Change extension handling for -fdeclare-opencl-builtins

Until now, the `-fdeclare-opencl-builtins` option behaved differently
compared to inclusion of `opencl-c.h`: builtins that are part of an
extension were only available if the extension was enabled using the
corresponding pragma.

Builtins that belong to an extension are guarded using a preprocessor
macro (that is named after the extension) in `opencl-c.h`.  Align the
behaviour of `-fdeclare-opencl-builtins` with this.

Co-authored-by: Anastasia Stulova
Differential Revision: https://reviews.llvm.org/D95616

3 years ago[ARM] Remove DLS lr, lr
David Green [Tue, 2 Feb 2021 11:09:31 +0000 (11:09 +0000)]
[ARM] Remove DLS lr, lr

A DLS lr, lr instruction only moves lr to itself. It need not be emitted
on it's own to save a instruction in the loop preheader.

Differential Revision: https://reviews.llvm.org/D78916

3 years agoRevert "[CSSPGO] Factor out common part for CSSPGO inline and AFDO inline"
Adrian Kuegel [Tue, 2 Feb 2021 10:46:54 +0000 (11:46 +0100)]
Revert "[CSSPGO] Factor out common part for CSSPGO inline and AFDO inline"

This reverts commit 9a03058d6322edb8abc803ba3e436cc62647d979.

3 years agoRevert "Fix build break from D95024"
Adrian Kuegel [Tue, 2 Feb 2021 10:46:32 +0000 (11:46 +0100)]
Revert "Fix build break from D95024"

This reverts commit 09cd849fdef2b2d3de2d0b0a5c512100957e0ef6.

3 years ago[ARM] Regenerate LowOverheadLoops mir tests. NFC
David Green [Tue, 2 Feb 2021 10:28:58 +0000 (10:28 +0000)]
[ARM] Regenerate LowOverheadLoops mir tests. NFC

3 years ago[flang][driver] Disallow non-existent input files in the frontend driver
Andrzej Warzynski [Tue, 2 Feb 2021 09:07:33 +0000 (09:07 +0000)]
[flang][driver] Disallow non-existent input files in the frontend driver

This patch adds a check that verifies that the input file used when
calling the frontend driver (i.e. `flang-new -fc1`) actually exists.
This was not required for the compiler driver, `flang-new`, as that's
already handled in libclangDriver.

Once all input/output file management is moved to the driver, we should
also check that for input from `stdin` the corresponding file descriptor
was successfully acquired.

This patch also makes sure that the default action in the frontend is
`ParseSyntaxOnly`. This is consistent with Clang. Before this change
`flang-new -fc1` would do nothing, which makes testing changes like the
one introduced here a bit tricky.

Reviewed By: SouraVX

Differential Revision: https://reviews.llvm.org/D95127

3 years ago[SVE][LoopVectorize] Add masked load/store and gather/scatter support for SVE
David Sherwood [Fri, 22 Jan 2021 16:53:21 +0000 (16:53 +0000)]
[SVE][LoopVectorize] Add masked load/store and gather/scatter support for SVE

This patch updates IRBuilder::CreateMaskedGather/Scatter to work
with ScalableVectorType and adds isLegalMaskedGather/Scatter functions
to AArch64TargetTransformInfo. In addition I've fixed up
isLegalMaskedLoad/Store to return true for supported scalar types,
since this is what the vectorizer asks for.

In LoopVectorize.cpp I've changed
LoopVectorizationCostModel::getInterleaveGroupCost to return an invalid
cost for scalable vectors, since currently this relies upon using shuffle
vector for reversing vectors. In addition, in
LoopVectorizationCostModel::setCostBasedWideningDecision I have assumed
that the cost of scalarising memory ops is infinitely expensive.

I have added some simple masked load/store and gather/scatter tests,
including cases where we use gathers and scatters for conditional invariant
loads and stores.

Differential Revision: https://reviews.llvm.org/D95350

3 years agoFold one-use variable into assert. NFCI.
Benjamin Kramer [Tue, 2 Feb 2021 09:50:48 +0000 (10:50 +0100)]
Fold one-use variable into assert. NFCI.

Avoids a warning in Release builds.

3 years ago[mlir] Keep track of region signature conversions as argument replacements
Alex Zinenko [Fri, 29 Jan 2021 18:41:10 +0000 (19:41 +0100)]
[mlir] Keep track of region signature conversions as argument replacements

In dialect conversion, signature conversions essentially perform block argument
replacement and are added to the general value remapping. However, the replaced
values were not tracked, so if a signature conversion was rolled back, the
construction of operand lists for the following patterns could have obtained
block arguments from the mapping and give them to the pattern leading to
use-after-free. Keep track of signature conversions similarly to normal block
argument replacement, and erase such replacements from the general mapping when
the conversion is rolled back.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D95688

3 years ago[dllimport] Honor always_inline when deciding whether a dllimport function should...
Hans Wennborg [Fri, 29 Jan 2021 09:54:40 +0000 (10:54 +0100)]
[dllimport] Honor always_inline when deciding whether a dllimport function should be available for inlining (PR48925)

Normally, Clang will not make dllimport functions available for inlining
if they reference non-imported symbols, as this can lead to confusing
link errors. But if the function is marked always_inline, the user
presumably knows what they're doing and the attribute should be honored.

Differential revision: https://reviews.llvm.org/D95673

3 years ago[AMDGPU] Mark epilog restores as frame-destroy
Sebastian Neubauer [Mon, 1 Feb 2021 15:02:09 +0000 (16:02 +0100)]
[AMDGPU] Mark epilog restores as frame-destroy

I guess instructions were marked as frame-setup by accident, they are
restores as part of the epilog.

Differential Revision: https://reviews.llvm.org/D95783

3 years ago[AMDGPU] Clarify calling conv about inactive lanes
Sebastian Neubauer [Thu, 28 Jan 2021 13:53:22 +0000 (14:53 +0100)]
[AMDGPU] Clarify calling conv about inactive lanes

So far, it was not specified what happens with the VGPRs of inactive
lanes when functions are called. This patch explicitely mentions that
the VGPR values of inactive lanes need to be preserved for all
registers.

This describes the current behavior, as only active lanes of registers
are saved to scratch. Also, as the multi-lane nature of VGPRs is not
properly modeled, we cannot determine the live VGPRs from inactive lanes
at calls. So we cannot save them, even if we intended to do so.

Differential Revision: https://reviews.llvm.org/D95610

3 years agoFix build break from D95024
Wenlei He [Tue, 2 Feb 2021 09:00:24 +0000 (01:00 -0800)]
Fix build break from D95024

3 years ago[CSSPGO] Factor out common part for CSSPGO inline and AFDO inline
Wenlei He [Wed, 20 Jan 2021 07:29:14 +0000 (23:29 -0800)]
[CSSPGO] Factor out common part for CSSPGO inline and AFDO inline

Refactoring SampleProfileLoader::inlineHotFunctions to use helpers from CSSPGO inlining and reduce similar code in the inlining loop, plus minor cleanup for AFDO path.

Test Plan:

Differential Revision: https://reviews.llvm.org/D95024

3 years ago[AMDGPU] Add new short clamp pattern in GlobalISel.
Thomas Symalla [Tue, 2 Feb 2021 08:32:25 +0000 (09:32 +0100)]
[AMDGPU] Add new short clamp pattern in GlobalISel.

3 years agoRemoved Diff file.
Thomas Symalla [Tue, 2 Feb 2021 07:50:30 +0000 (08:50 +0100)]
Removed Diff file.

Differential Revision: https://reviews.llvm.org/D93708

3 years agoFixed includes.
Thomas Symalla [Mon, 1 Feb 2021 16:58:51 +0000 (17:58 +0100)]
Fixed includes.

Differential Revision: https://reviews.llvm.org/D93708

3 years agoFixed includes.
Thomas Symalla [Mon, 1 Feb 2021 15:59:57 +0000 (16:59 +0100)]
Fixed includes.

3 years agoReverted whitespace changes.
Thomas Symalla [Mon, 1 Feb 2021 08:19:44 +0000 (09:19 +0100)]
Reverted whitespace changes.

Differential Revision: https://reviews.llvm.org/D90968

3 years agoAdded missing includes.
Thomas Symalla [Mon, 1 Feb 2021 08:17:33 +0000 (09:17 +0100)]
Added missing includes.

3 years agoRenamed med3 opcode, removed superfluous copy.
Thomas Symalla [Tue, 26 Jan 2021 10:26:50 +0000 (11:26 +0100)]
Renamed med3 opcode, removed superfluous copy.

3 years agoRemoved the generic virtual register creations. Reworked the tests.
Thomas Symalla [Mon, 25 Jan 2021 14:20:24 +0000 (15:20 +0100)]
Removed the generic virtual register creations. Reworked the tests.

3 years agoImplemented a MED3_S32 GIR opcode.
Thomas Symalla [Mon, 18 Jan 2021 15:05:00 +0000 (16:05 +0100)]
Implemented a MED3_S32 GIR opcode.

3 years agoAdded and used new target pseudo for v_cvt_pk_i16_i32, changes due to code review.
Thomas Symalla [Wed, 13 Jan 2021 14:23:45 +0000 (15:23 +0100)]
Added and used new target pseudo for v_cvt_pk_i16_i32, changes due to code review.

3 years agoFormatting changes
Thomas Symalla [Tue, 12 Jan 2021 12:02:49 +0000 (13:02 +0100)]
Formatting changes

3 years agoFormatting changes.
Thomas Symalla [Tue, 12 Jan 2021 12:01:04 +0000 (13:01 +0100)]
Formatting changes.

3 years agoUpdating formatting changes.
Thomas Symalla [Tue, 12 Jan 2021 11:58:36 +0000 (12:58 +0100)]
Updating formatting changes.

3 years agoResolve formatting changes.
Thomas Symalla [Tue, 12 Jan 2021 11:50:04 +0000 (12:50 +0100)]
Resolve formatting changes.

3 years agoCode changes yielded from review.
Thomas Symalla [Tue, 12 Jan 2021 08:40:21 +0000 (09:40 +0100)]
Code changes yielded from review.

3 years agoFixed tests.
Thomas Symalla [Mon, 11 Jan 2021 14:09:47 +0000 (15:09 +0100)]
Fixed tests.

3 years agoMove step to PreLegalizer
Thomas Symalla [Mon, 11 Jan 2021 13:50:45 +0000 (14:50 +0100)]
Move step to PreLegalizer

3 years agoMove Combiner to PreLegalize step
Thomas Symalla [Mon, 11 Jan 2021 13:50:28 +0000 (14:50 +0100)]
Move Combiner to PreLegalize step

3 years agoRenamed identifiers in lit
Thomas Symalla [Tue, 5 Jan 2021 10:24:27 +0000 (11:24 +0100)]
Renamed identifiers in lit

3 years agoReverted unintended git-format change.
Thomas Symalla [Tue, 5 Jan 2021 08:59:17 +0000 (09:59 +0100)]
Reverted unintended git-format change.

3 years agoFixed the lit tests and a bug in the implementation.
Thomas Symalla [Tue, 5 Jan 2021 08:58:00 +0000 (09:58 +0100)]
Fixed the lit tests and a bug in the implementation.

3 years agoRefactored the pattern matching.
Thomas Symalla [Mon, 4 Jan 2021 14:23:44 +0000 (15:23 +0100)]
Refactored the pattern matching.

3 years agoRenames
Thomas Symalla [Mon, 4 Jan 2021 10:27:30 +0000 (11:27 +0100)]
Renames

3 years agoAdded early exit.
Thomas Symalla [Tue, 22 Dec 2020 15:04:26 +0000 (16:04 +0100)]
Added early exit.

3 years agoAdded comments.
Thomas Symalla [Tue, 22 Dec 2020 13:49:24 +0000 (14:49 +0100)]
Added comments.

3 years agoclang-format
Thomas Symalla [Tue, 22 Dec 2020 13:40:07 +0000 (14:40 +0100)]
clang-format

3 years agoAdded clamp i64 to i16 global isel pattern.
Thomas Symalla [Tue, 22 Dec 2020 13:37:49 +0000 (14:37 +0100)]
Added clamp i64 to i16 global isel pattern.

3 years ago[RISCV] Replace NoX0 SDNodeXForm with a ComplexPattern to do the selection of the...
Craig Topper [Tue, 2 Feb 2021 07:53:54 +0000 (23:53 -0800)]
[RISCV] Replace NoX0 SDNodeXForm with a ComplexPattern to do the selection of the VL operand.

I think this is a more standard way of doing this.

Reviewed By: rogfer01

Differential Revision: https://reviews.llvm.org/D95833

3 years ago[CSSPGO] Call site prioritized inlining for sample PGO
Wenlei He [Mon, 4 Jan 2021 00:43:06 +0000 (16:43 -0800)]
[CSSPGO] Call site prioritized inlining for sample PGO

This change implemented call site prioritized BFS profile guided inlining for sample profile loader. The new inlining strategy maximize the benefit of context-sensitive profile as mentioned in the follow up discussion of CSSPGO RFC. The change will not affect today's AutoFDO as it's opt-in. CSSPGO now defaults to the new FDO inliner, but can fall back to today's replay inliner using a switch (`-sample-profile-prioritized-inline=0`).

Motivation

With baseline AutoFDO, the inliner in sample profile loader only replays previous inlining, and the use of profile is only for pruning previous inlining that turned out to be cold. Due to the nature of replay, the FDO inliner is simple with hotness being the only decision factor. It has the following limitations that we're improving now for CSSPGO.
 - It doesn't take inline candidate size into account. Since it's doing replay, the size growth is bounded by previous CGSCC inlining. With context-sensitive profile, FDO inliner is no longer limited by previous inlining, so we need to take size into account to avoid significant size bloat.
 - The way it looks at hotness is not accurate. It uses total samples in an inlinee as proxy for hotness, while what really matters for an inline decision is the call site count. This is an unfortunate fall back because call site count and callee entry count are not reliable due to dwarf based correlation, especially for inlinees. Now paired with pseudo-probe, we have accurate call site count and callee's entry count, so we can use that to gauge hotness more accurately.
 - It treats all call sites from a block as hot as long as there's one call site considered hot. This is normally true, but since total samples is used as hotness proxy, this transitiveness within block magnifies the inacurate hotness heuristic. With pseduo-probe and the change above, this is no longer an issue for CSSPGO.

New FDO Inliner

Putting all the requirement for CSSPGO together, we need a top-down call site prioritized BFS inliner. Here're reasons why each component is needed.
 - Top-down: We need a top-down inliner to better leverage context-sensitive profile, so inlining is driven by accurate context profile, and post-inline is also accurate. This is already implemented in https://reviews.llvm.org/D70655.
 - Size Cap: For top-down inliner, taking function size into account for inline decision alone isn't sufficient to control size growth. We also need to explicitly cap size growth because with top-down inlining, we can grow inliner size significantly with large number of smaller inlinees even if each individually passes the cost/size check.
 - Prioritize call sites: With size cap, inlining order also becomes important, because if we stop inlining due to size budget limit, we'd want to use budget towards the most beneficial call sites.
 - BFS inline: Same as call site prioritization, if we stop inlining due to size budget limit, we want a balanced inline tree, rather than going deep on one call path.

Note that the new inliner avoids repeatedly evaluating same set of call site, so it should help with compile time too. For this reason, we could transition today's FDO inliner to use a queue with equal priority to avoid wasted reevaluation of same call site (TODO).

Speculative indirect call promotion and inlining is also supported now with CSSPGO just like baseline AutoFDO.

Tunings and knobs

I created tuning knobs for size growth/cap control, and for hot threshold separate from CGSCC inliner. The default values are selected based on initial tuning with CSSPGO.

Results

Evaluated with an internal LLVM fork couple months ago, plus another change to adjust hot-threshold cutoff for context profile (will send up after this one), the new inliner show ~1% geomean perf win on spec2006 with CSSPGO, while reducing code size too. The measurement was done using train-train setup, MonoLTO w/ new pass manager and pseudo-probe. Note that this is just a starting point - we hope that the new inliner will open up more opportunity with CSSPGO, but it will certainly take more time and effort to make it fully calibrated and ready for bigger workloads (we're working on it).

Differential Revision: https://reviews.llvm.org/D94001

3 years ago[mlir][Standard] Extend n-D vector lowering to LLVM to [s|z]exti ops.
Nicolas Vasilache [Tue, 2 Feb 2021 07:41:07 +0000 (07:41 +0000)]
[mlir][Standard] Extend n-D vector lowering to LLVM to [s|z]exti ops.

[s|z]exti ops do not have the same operand and result type.
As a consequence, the lowering of the n-D vector form needs to be relaxed a bit.
This revision additionally performs a few NFC renamings of variables to make them more intuitive.

Differential Revision: https://reviews.llvm.org/D95760

3 years ago[SelectionDAG] Prevent scalable vector warning from ComputeNumSignBits on extract_vec...
Craig Topper [Tue, 2 Feb 2021 07:08:46 +0000 (23:08 -0800)]
[SelectionDAG] Prevent scalable vector warning from ComputeNumSignBits on extract_vector_elt on a scalable vector.

3 years ago[NFC][Docs] Fix RAVFrontendAction doc's CMakelists.txt for Shared build
xgupta [Tue, 2 Feb 2021 07:23:45 +0000 (12:53 +0530)]
[NFC][Docs] Fix RAVFrontendAction doc's CMakelists.txt for Shared build

[[ https://clang.llvm.org/docs/RAVFrontendAction.html | Example tutorial ]] giving undefine reference error while building with BUILD_SHARED_LIBS=ON.

Differential Revision: https://reviews.llvm.org/D95737

3 years agoRevert "[AArch64] Homogeneous Prolog and Epilog Size Optimization"
Puyan Lotfi [Tue, 2 Feb 2021 07:33:44 +0000 (02:33 -0500)]
Revert "[AArch64] Homogeneous Prolog and Epilog Size Optimization"

This reverts commit 0426be3df6180747bd68706db87a70580f064f0f.

Reverting due to some expensive-checks failures in tests.

3 years ago[test] Fix unused FileCheck prefixes in test/Reduce
Fangrui Song [Tue, 2 Feb 2021 07:05:46 +0000 (23:05 -0800)]
[test] Fix unused FileCheck prefixes in test/Reduce

3 years ago[test] Fix unused FileCheck prefixes in clang-tidy and one llvm/test/Reduce test
Fangrui Song [Tue, 2 Feb 2021 06:51:29 +0000 (22:51 -0800)]
[test] Fix unused FileCheck prefixes in clang-tidy and one llvm/test/Reduce test

3 years ago[ORC] Clear unused materializing info entries.
Lang Hames [Tue, 2 Feb 2021 06:44:12 +0000 (17:44 +1100)]
[ORC] Clear unused materializing info entries.

Once a symbol is Ready its MaterializingInfo entry is unused and can be removed
to free up some memory.

3 years ago[test] Fix unused FileCheck prefixes in compiler-rt
Fangrui Song [Tue, 2 Feb 2021 06:32:13 +0000 (22:32 -0800)]
[test] Fix unused FileCheck prefixes in compiler-rt

3 years ago[SCEV] Apply loop guards to divisibility tests
Gil Rapaport [Fri, 11 Dec 2020 08:09:51 +0000 (10:09 +0200)]
[SCEV] Apply loop guards to divisibility tests

Extend applyLoopGuards() to take into account conditions/assumes proving some
value %v to be divisible by D by rewriting %v to (%v / D) * D. This lets the
loop unroller and the loop vectorizer identify more loops as not requiring
remainder loops.

Differential Revision: https://reviews.llvm.org/D95521

3 years ago[test] Default clang/test to FileCheck --allow-unused-prefixes=false
Fangrui Song [Tue, 2 Feb 2021 06:02:59 +0000 (22:02 -0800)]
[test] Default clang/test to FileCheck --allow-unused-prefixes=false

3 years ago[test] Fix unused FileCheck prefixes in lldb
Fangrui Song [Tue, 2 Feb 2021 05:45:51 +0000 (21:45 -0800)]
[test] Fix unused FileCheck prefixes in lldb

3 years ago[MLIR][TOSA] Comparison based elementwise operations for tosa-to-linalg
natashaknk [Tue, 2 Feb 2021 05:37:23 +0000 (21:37 -0800)]
[MLIR][TOSA] Comparison based elementwise operations for tosa-to-linalg

Comitted log, exp, maximum, minimum, comparison, ceil and floor conversions from TOSA to LinAlg. Support for signless integer and floating point.

Reviewed By: rsuderman

Differential Revision: https://reviews.llvm.org/D95839

3 years ago[AArch64] Homogeneous Prolog and Epilog Size Optimization
Kyungwoo Lee [Tue, 2 Feb 2021 03:32:32 +0000 (22:32 -0500)]
[AArch64] Homogeneous Prolog and Epilog Size Optimization

Prologs and epilogs handle callee-save registers and tend to be irregular with
different immediate offsets that are not often handled by the MachineOutliner.
Commit D18619/a5335647d5e8 (combining stack operations) stretched irregularity
further.

This patch tries to emit homogeneous stores and loads with the same offset for
prologs and epilogs respectively. We have observed that this canonicalizes
(homogenizes) prologs and epilogs significantly and results in a greatly
increased chance of outlining, resulting in a code size reduction.

Despite the above results, there are still size wins to be had that the
MachineOutliner does not provide due to the special handling X30/LR. To handle
the LR case, his patch custom-outlines prologs and epilogs in place. It does
this by doing the following:

  * Injects HOM_Prolog and HOM_Epilog pseudo instructions during a Prolog and
    Epilog Injection Pass.
  * Lowers and optimizes said pseudos in a AArchLowerHomogneousPrologEpilog Pass.
  * Outlined helpers are created on demand. Identical helpers are merged by the linker.
  * An opt-in flag is introduced to enable this feature. Another threshold flag
    is also introduced to control the aggressiveness of outlining for application's need.

This reduced an average of 4% of code size on LLVM-TestSuite/CTMark targeting arm64/-Oz.

Differential Revision: https://reviews.llvm.org/D76570

3 years ago[test] Fix unused FileCheck prefixes in compiler-rt/test
Fangrui Song [Tue, 2 Feb 2021 05:24:58 +0000 (21:24 -0800)]
[test] Fix unused FileCheck prefixes in compiler-rt/test

3 years agoclang-extra: fix incorrect use of std::lock_guard by adding variable name (identified...
Conrad Poelman [Tue, 2 Feb 2021 04:59:38 +0000 (05:59 +0100)]
clang-extra: fix incorrect use of std::lock_guard by adding variable name (identified by MSVC [[nodiscard]] error)

`std::lock_guard` is an RAII class that needs a variable name whose scope determines the guard's lifetime. This particular usage lacked a variable name, meaning the guard could be destroyed before the line that it was indented to protect.

This line was identified by building clang with the latest MSVC preview release, which declares the std::lock_guard constructor to be `[[nodiscard]]` to draw attention to such issues.

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D95725

3 years ago[VFS] Add support to RedirectingFileSystem for mapping a virtual directory to one...
Nathan Hawes [Fri, 15 Jan 2021 07:33:52 +0000 (17:33 +1000)]
[VFS] Add support to RedirectingFileSystem for mapping a virtual directory to one in the external FS.

Previously file entries in the -ivfsoverlay yaml could map to a file in the
external file system, but directories had to list their contents in the form of
other file entries or directories. Allowing directory entries to map to a
directory in the external file system makes it possible to present an external
directory's contents in a different location and (in combination with the
'fallthrough' option) overlay one directory's contents on top of another.

rdar://problem/72485443
Differential Revision: https://reviews.llvm.org/D94844

3 years ago[TableGen] Use range-based for loops (NFC)
Kazu Hirata [Tue, 2 Feb 2021 04:55:08 +0000 (20:55 -0800)]
[TableGen] Use range-based for loops (NFC)

3 years ago[TableGen] Use ListSeparator (NFC)
Kazu Hirata [Tue, 2 Feb 2021 04:55:07 +0000 (20:55 -0800)]
[TableGen] Use ListSeparator (NFC)

3 years ago[llvm] Use pop_back_val (NFC)
Kazu Hirata [Tue, 2 Feb 2021 04:55:05 +0000 (20:55 -0800)]
[llvm] Use pop_back_val (NFC)

3 years ago[test] Fix unuses FileCheck prefixes in lld
Fangrui Song [Tue, 2 Feb 2021 04:52:33 +0000 (20:52 -0800)]
[test] Fix unuses FileCheck prefixes in lld

3 years ago[test] Fix unuses FileCheck prefixes in clang/test/Modules
Fangrui Song [Tue, 2 Feb 2021 03:46:23 +0000 (19:46 -0800)]
[test] Fix unuses FileCheck prefixes in clang/test/Modules

3 years ago[LoopVectorize] Relax a FCmpInst assert to dyn_cast after D95690
Fangrui Song [Tue, 2 Feb 2021 03:28:45 +0000 (19:28 -0800)]
[LoopVectorize] Relax a FCmpInst assert to dyn_cast after D95690

The instruction may be `icmp eq i32`. Noticed in an internal Halide+wasm JIT test.

3 years agoAMDGPU: Fix dbg_value handling when forming soft clause bundles
Matt Arsenault [Sat, 30 Jan 2021 22:10:51 +0000 (17:10 -0500)]
AMDGPU: Fix dbg_value handling when forming soft clause bundles

DBG_VALUES placed between memory instructions would change
codegen. Skip over these and re-insert them after the bundle instead
of giving up on bundling.