platform/upstream/llvm.git
12 months ago[lldb] Fix variable name mismatch between signature and docs (NFC)
Jonas Devlieghere [Thu, 22 Jun 2023 15:57:30 +0000 (08:57 -0700)]
[lldb] Fix variable name mismatch between signature and docs (NFC)

The variable is named `bundle_dir` but the documentation referenced
`directory` which generated a warning.

12 months ago[DFSAN] Add support for _tolower
Tomasz Kuchta [Wed, 21 Jun 2023 21:24:33 +0000 (21:24 +0000)]
[DFSAN] Add support for _tolower

I noticed that in some cases _tolower shows as uninstrumented - I've added it as "functional" in the done_abilist.txt file

Reviewed by: browneee

Differential Revision: https://reviews.llvm.org/D153410

12 months ago[MC,x86-32] Remove a gold<2.34 workaround
Fangrui Song [Thu, 22 Jun 2023 20:44:15 +0000 (13:44 -0700)]
[MC,x86-32] Remove a gold<2.34 workaround

This workaround appears to apply with gold<2.34 -O2/-O3 (linker -O2, not
compiler driver -O2). This used to be more visible as we used -Wl,-O3 in
CMake, but the option is generally not recommended and has been removed
by d63016a86548e8231002a760bbe9eb817cd1eb00 (Dec 2021).

This finishes a workaround removal work started by D64327 (2019).

Link: https://github.com/llvm/llvm-project/issues/45269
12 months ago[CLANG] Fix Static Code Analyzer Concerns with bad bit right shift operation in getNV...
Manna, Soumi [Thu, 22 Jun 2023 20:24:53 +0000 (13:24 -0700)]
[CLANG] Fix Static Code Analyzer Concerns with bad bit right shift operation in getNVPTXLaneID()

In getNVPTXLaneID(CodeGenFunction &), the value of LaneIDBits is 4294967295 since function call llvm::Log2_32(CGF->getTarget()->getGridValue().GV_Warp_Size) might return 4294967295.

  unsigned LaneIDBits =
       llvm::Log2_32(CGF.getTarget().getGridValue().GV_Warp_Size);
  unsigned LaneIDMask = ~0u >> (32u - LaneIDBits);

The shift amount (32U - LaneIDBits) might be 33, So it has undefined behavior for right shifting by more than 31 bits.

This patch adds an assert to guard the LaneIDBits overflow issue with LaneIDMask value.

Reviewed By: tahonermann

Differential Revision: https://reviews.llvm.org/D151606

12 months ago[flang] Avoid crash in statement function error case
Peter Klausler [Thu, 22 Jun 2023 16:25:03 +0000 (09:25 -0700)]
[flang] Avoid crash in statement function error case

The predicate IsPureProcedure() crashes with infinite
recursion when presented with mutually recursive statement
functions -- an error case that should be recoverable.
Fix by adding a visited set.

Fixes bug https://github.com/llvm/llvm-project/issues/63231

Differential Revision: https://reviews.llvm.org/D153569

12 months ago[libc] Can build amdgpu libc even if rocm is missing
Jon Chesterfield [Thu, 22 Jun 2023 20:18:43 +0000 (21:18 +0100)]
[libc] Can build amdgpu libc even if rocm is missing

Clang defaults to failing to build if it can't find rocm device libs

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D153581

12 months ago[flang][openacc] Add lowering support for multi-dimensional arrays reduction
Valentin Clement [Thu, 22 Jun 2023 20:10:50 +0000 (13:10 -0700)]
[flang][openacc] Add lowering support for multi-dimensional arrays reduction

Lower multi-dimensional arrays reduction for add and mul operator.

Depends on D153448

Reviewed By: razvanlupusoru

Differential Revision: https://reviews.llvm.org/D153455

12 months ago[flang][openacc] Add lowering support for 1d array reduction for add/mul operator
Valentin Clement [Thu, 22 Jun 2023 20:09:15 +0000 (13:09 -0700)]
[flang][openacc] Add lowering support for 1d array reduction for add/mul operator

Lower 1d array reduction for add and mul operator. Multi-dimensional arrays and
other operator will follow.

Reviewed By: razvanlupusoru

Differential Revision: https://reviews.llvm.org/D153448

12 months ago[CLANG] Fix potential null pointer dereference bugs
Manna, Soumi [Thu, 22 Jun 2023 19:52:25 +0000 (12:52 -0700)]
[CLANG] Fix potential null pointer dereference bugs

This patch uses castAs instead of getAs which will assert if the type doesn't match and adds nullptr check if needed.

Also this patch improves the codes and passes I.getData() instead of doing a lookup in dumpVarDefinitionName()
since we're iterating over the same map in LocalVariableMap::dumpContex().

Reviewed By: aaron.ballman, aaronpuchert

Differential Revision: https://reviews.llvm.org/D153033

12 months ago[NFC][asan] Add FIXME for a posible optimization
Vitaly Buka [Thu, 22 Jun 2023 18:17:12 +0000 (11:17 -0700)]
[NFC][asan] Add FIXME for a posible optimization

12 months ago[Clang] Fix Static Code Analysis Concerns with copy without assign
Manna, Soumi [Thu, 22 Jun 2023 19:30:01 +0000 (12:30 -0700)]
[Clang] Fix Static Code Analysis Concerns with copy without assign

This patch adds missing assignment operator to the class which has user-defined copy constructor.

Reviewed By: tahonermann, aaronpuchert

Differential Revision: https://reviews.llvm.org/D150931

12 months ago[asan] Don't double poison secondary allocations
Vitaly Buka [Thu, 22 Jun 2023 06:18:25 +0000 (23:18 -0700)]
[asan] Don't double poison secondary allocations

Sanitizers allocate shadow and memory as MAP_NORESERVE.

User memory can stay this way and do not increase RSS as long as we
don't store there.

The shadow unpoisoning also can avoid RSS increase for zeroed pages.
However as soon we poison the shadow, we need the page in RSS.

To avoid unnececary RSS increase we should not poison memory just before
unpoisoning them.

Depends on D153497.

Reviewed By: thurston

Differential Revision: https://reviews.llvm.org/D153500

12 months ago[MC] Fold A-B when A's fragment precedes B's fragment
Fangrui Song [Thu, 22 Jun 2023 19:24:19 +0000 (12:24 -0700)]
[MC] Fold A-B when A's fragment precedes B's fragment

When the MCAssembler is non-null and the MCAsmLayout is null, we can fold A-B
when

* A and B are in the same fragment, or
* A's fragment suceeds B's fragment, and they are not separated by non-data fragments (D69411)

This patch allows folding when A's fragment precedes B's fragment so
that `9997b - . == 0` below can be evaluated as true:

```
nop
.arch_extension sec
9997:nop
// old behavior: error: expected absolute expression
.if 9997b - . == 0
.endif
```

Add a case to llvm/test/MC/ARM/directive-if-subtraction.s.
Note: for MCAsmStreamer, we cannot evaluate `.if . - 9997b == 0` at parse
time due to MCAsmStreamer::getAssemblerPtr returning nullptr (D45164).

Some Darwin tests check that this folding does not work. Add `.p2align 2` to
block some label difference folding or adjust the tests.

Reviewed By: nickdesaulniers

Differential Revision: https://reviews.llvm.org/D153096

12 months ago[LV] Add test with reduction start values that are/may be poison/undef.
Florian Hahn [Thu, 22 Jun 2023 19:15:21 +0000 (20:15 +0100)]
[LV] Add test with reduction start values that are/may be poison/undef.

Test cases for #62565.

12 months ago[Clang] Disable `libc` headers for offloading languages
Joseph Huber [Thu, 22 Jun 2023 19:03:18 +0000 (14:03 -0500)]
[Clang] Disable `libc` headers for offloading languages

These headers are currently broken when included from the offloading
languages like OpenMP, OpenCL, CUDA, and HIP. Turn this logic off so we
can compile these languages when the GPU libc is installed. I am
currently trying to remedy this and have made an RFC for it in libc,
see https://discourse.llvm.org/t/rfc-implementing-gpu-headers-in-the-llvm-c-library/71523.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D153578

12 months ago[MC][test] Clean up MC/ARM/directive-if-subtraction.s
Fangrui Song [Thu, 22 Jun 2023 19:11:52 +0000 (12:11 -0700)]
[MC][test] Clean up MC/ARM/directive-if-subtraction.s

12 months ago[CLANG] Fix uninitialized scalar field issues
Manna, Soumi [Thu, 22 Jun 2023 19:05:30 +0000 (12:05 -0700)]
[CLANG] Fix uninitialized scalar field issues

Reviewed By: erichkeane, steakhal, tahonermann, shafik

Differential Revision: https://reviews.llvm.org/D150744

12 months ago[dataflow] Avoid copying environment
Sam McCall [Thu, 22 Jun 2023 02:27:20 +0000 (04:27 +0200)]
[dataflow] Avoid copying environment

This appears to be just an accidental copy rather than move from a scratch
variable.
As well as doing redundant work, these copies introduce extra SAT variables
which make debugging harder (each Enviroment has a unique FC token).

Example flow condition before:
```
(B0:1 = V15)
(B1:1 = V8)
(B2:1 = V10)
(B3:1 = (V4 & (!V7 => V6)))
(V10 = (B3:1 & !V7))
(V12 = B1:1)
(V13 = B2:1)
(V15 = (V12 | V13))
(V3 = V2)
(V4 = V3)
(V8 = (B3:1 & !!V7))
B0:1
V2
```

after:
```
(B0:1 = (V9 | V10))
(B1:1 = (B3:1 & !!V6))
(B2:1 = (B3:1 & !V6))
(B3:1 = (V3 & (!V6 => V5)))
(V10 = B2:1)
(V3 = V2)
(V9 = B1:1)
B0:1
V2
```

(with labelling from D153488)

There are also some more copies that can be avoided here (when multiple blocks
without terminating statements are joined), but they're less trivial, so I'll
put those in another patch.

Differential Revision: https://reviews.llvm.org/D153491

12 months agoRevert "Try to implement lambdas with inalloca parameters by forwarding without use...
Amy Huang [Thu, 22 Jun 2023 18:36:30 +0000 (11:36 -0700)]
Revert "Try to implement lambdas with inalloca parameters by forwarding without use of inallocas."

Causes a clang crash (see crbug.com/1457256).

This reverts commit 015049338d7e8e0e81f2ad2f94e5a43e2e3f5220.

12 months ago[AMDGPU] Add _e64_dpp asm suffix to docs
Joe Nash [Thu, 22 Jun 2023 15:31:50 +0000 (11:31 -0400)]
[AMDGPU] Add _e64_dpp asm suffix to docs

The _e64_dpp suffix can be added to an instruction to force the
AsmParser to encode it as VOP3 with DPP if possible on GFX11+. This has
been the behavior since GFX11 was introduced; this patch only updates
the documentation.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D153564

12 months agoRevert "[CodeGen] Extend reduction support in ComplexDeinterleaving pass to support...
Vitaly Buka [Thu, 22 Jun 2023 18:24:47 +0000 (11:24 -0700)]
Revert "[CodeGen] Extend reduction support in ComplexDeinterleaving pass to support predication"

ComplexDeinterleavingPass.cpp:1849:3: error: default label in switch which covers all enumeration values

This reverts commit 116953b82130df1ebd817b3587b16154f659c013.

12 months ago[RISCV] Sort the extensions in SupportedExtensions and SupportedExperimentalExtensions.
Craig Topper [Thu, 22 Jun 2023 18:01:11 +0000 (11:01 -0700)]
[RISCV] Sort the extensions in SupportedExtensions and SupportedExperimentalExtensions.

As the extension list continues to grow it probably makes sense
to use a binary search rather than linear search. Sorting the strings
will make this possible.

This also avoids any question about where to add new strings in
the tables.

Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D153170

12 months ago[asan] Optimize Quarantine of secondary allocations
Vitaly Buka [Thu, 22 Jun 2023 05:44:56 +0000 (22:44 -0700)]
[asan] Optimize Quarantine of secondary allocations

For the secondary allocation we don't need poison and fill memory if we
skip quarantine, and we don't need to poison after quarantine. In both
cases the secondary allocator will unmap memory and unpoison the shadow
from get_allocator().Deallocate().

Depends on D153496.

Reviewed By: thurston

Differential Revision: https://reviews.llvm.org/D153497

12 months agoInstCombine: Fold select of ldexp to ldexp of select
Matt Arsenault [Wed, 17 May 2023 09:18:51 +0000 (10:18 +0100)]
InstCombine: Fold select of ldexp to ldexp of select

The select-of-different-exp pattern appears in the device
libraries. I haven't seen the select-of-values case.

12 months agoInstCombine: Add some baseline tests for ldexp combines
Matt Arsenault [Wed, 17 May 2023 08:10:39 +0000 (09:10 +0100)]
InstCombine: Add some baseline tests for ldexp combines

12 months ago[Headers] Fix up some conditionals
Paul Robinson [Thu, 22 Jun 2023 17:15:16 +0000 (10:15 -0700)]
[Headers] Fix up some conditionals

12 months ago[LSR] Return nullptr from getExpr if the result isn't invertible.
Florian Hahn [Thu, 22 Jun 2023 18:10:48 +0000 (19:10 +0100)]
[LSR] Return nullptr from getExpr if the result isn't invertible.

getExpr is missing a check to make sure the result is invertible.
This can lead to incorrect results, so return nullptr in those cases
like in other places in IVUsers.

Fixes #62660.

Reviewed By: qcolombet

Differential Revision: https://reviews.llvm.org/D153202

12 months ago[opt] Exposing the parameters of LoopRotate to the -passes interface
Yann Girsberger [Thu, 22 Jun 2023 17:57:46 +0000 (10:57 -0700)]
[opt] Exposing the parameters of LoopRotate to the -passes interface

There is a gap between running opt -Oz and running opt -passes="OZ_PASSES" where OZ_PASSES is taken from running opt -Oz -print-pipeline-passes.

One of the reasons causing this is that -Oz uses non-default setting for LoopRotate but LoopRotate does not expose its settings when printing the pipeline.

This commit fixes this by exposing LoopRotates parameters.

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D153437

12 months agoRevert "[llvm-exegesis] Add ability to assign perf counters to specific PID"
Aiden Grossman [Thu, 22 Jun 2023 18:01:57 +0000 (18:01 +0000)]
Revert "[llvm-exegesis] Add ability to assign perf counters to specific PID"

Revert "[llvm-exegesis] Introduce Subprocess Executor Mode"

This reverts commit 5e9173c43a9b97c8614e36d6f754317f731e71e9.
This reverts commit 4d618b52f6e05e41d35f56653cb36bf7d4dc794e.

Reverting the PID commit as it is currently breaking MinGW builds and
the way I'm checking for the presence of pid_t needs to be fixed and I
need to do some testing. The subprocess executor mode patch is a
dependent patch so also needs to be reverted and also needs some work as
it is currently failing tests where libpfm is installed and the kernel
version is less than 5.6.

12 months ago[llvm] Refactor BalancedPartitioning for fixing build failure with MSVC
Kamlesh Kumar [Thu, 22 Jun 2023 17:41:09 +0000 (23:11 +0530)]
[llvm] Refactor BalancedPartitioning for fixing build failure with MSVC

Fix build failure on windows system with msvc toolchain

Reviewed By: ellis

Differential Revision: https://reviews.llvm.org/D153318

12 months ago[lldb][Windows] Fix ZipFileResolver tests
Kazuki Sakamoto [Wed, 21 Jun 2023 00:30:29 +0000 (17:30 -0700)]
[lldb][Windows] Fix ZipFileResolver tests

D152759 introduced the Android .zip so file support, but it only considered
POSIX path. The code also runs on Windows, so the path could be Windows path.
Support both patterns on Windows.

Differential Revision: https://reviews.llvm.org/D153390

12 months ago[NFC][asan] Add const to QuarantineCallback methods
Vitaly Buka [Thu, 22 Jun 2023 17:34:19 +0000 (10:34 -0700)]
[NFC][asan] Add const to QuarantineCallback methods

12 months ago[NFC][asan] Extract FillChunk
Vitaly Buka [Thu, 22 Jun 2023 17:26:21 +0000 (10:26 -0700)]
[NFC][asan] Extract FillChunk

12 months ago[NFC][asan] Add QuarantineCallback::{PreQuarantine,RecyclePassThrough}
Vitaly Buka [Thu, 22 Jun 2023 05:26:01 +0000 (22:26 -0700)]
[NFC][asan] Add QuarantineCallback::{PreQuarantine,RecyclePassThrough}

Reviewed By: thurston

Differential Revision: https://reviews.llvm.org/D153496

12 months ago[RISCV] Improve SiFive7 for reductions and ordered reductions
Michael Maitland [Wed, 21 Jun 2023 21:49:05 +0000 (14:49 -0700)]
[RISCV] Improve SiFive7 for reductions and ordered reductions

Since the scheduling resources for reductions and ordered reductions now
account for LMUL and SEW, we can modify the Latency and ResourceCycles
for these resoruces.

* Most reductions take a total of approx `vl*SEW/DLEN + 5*(4 + log2(DLEN/SEW))`
  cycles.
* Ordered floating-point reductions take a total of approx `5*vl` cycles.

This commit re-commits 208fc34c65d648e869d7d3ba0dfcbca90942cda0. It was
failing because it used wrong version of SchedSEWSet.

Differential Revision: https://reviews.llvm.org/D153474

12 months ago[clang] Add a namespace for interesting identifiers.
Zahira Ammarguellat [Thu, 15 Jun 2023 19:44:25 +0000 (15:44 -0400)]
[clang] Add a namespace for interesting identifiers.

Differential Revision: https://reviews.llvm.org/D146148

12 months agoRevert "[RISCV] Improve SiFive7 for reductions and ordered reductions"
Michael Maitland [Thu, 22 Jun 2023 17:19:04 +0000 (10:19 -0700)]
Revert "[RISCV] Improve SiFive7 for reductions and ordered reductions"

This reverts commit 208fc34c65d648e869d7d3ba0dfcbca90942cda0.

Reverting because build failure.

12 months ago[RISCV] Improve SiFive7 for reductions and ordered reductions
Michael Maitland [Wed, 21 Jun 2023 21:49:05 +0000 (14:49 -0700)]
[RISCV] Improve SiFive7 for reductions and ordered reductions

Since the scheduling resources for reductions and ordered reductions now
account for LMUL and SEW, we can modify the Latency and ResourceCycles
for these resoruces.

* Most reductions take a total of approx `vl*SEW/DLEN + 5*(4 + log2(DLEN/SEW))`
  cycles.
* Ordered floating-point reductions take a total of approx `5*vl` cycles.

Differential Revision: https://reviews.llvm.org/D153474

12 months ago[RISCV] Improve SiFive7 for loads and stores
Michael Maitland [Wed, 21 Jun 2023 21:40:41 +0000 (14:40 -0700)]
[RISCV] Improve SiFive7 for loads and stores

* Unit-stride loads and stores can operate at the full bandwidth of the
memory pipe. The memory pipe is DLEN bits wide.

* Strided loads and stores operate at one element per cycle and should
be scheduled accordingly.

* Indexed loads and stores operate at one element per cycle, and they
stall the machine until all addresses have been generated, so they
cannot be scheduled.

* Unit stride seg2 load is number of DLEN parts

* seg3-8 are one segment per cycle, unless the segment is larger
than DLEN in which each segment takes multiple cycles.

Differential Revision: https://reviews.llvm.org/D153475

12 months ago[libc] Move fences into outbox/wait-for-ownership test
Jon Chesterfield [Thu, 22 Jun 2023 17:14:40 +0000 (18:14 +0100)]
[libc] Move fences into outbox/wait-for-ownership test

Also moves the wait-until-inbox-changes test into a shared method.

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D153573

12 months ago[asan] Don't quarantine large blocks
Vitaly Buka [Thu, 22 Jun 2023 05:02:43 +0000 (22:02 -0700)]
[asan] Don't quarantine large blocks

Almost NFC, as blocks over max quarantine size will trigger immediate
drain anyway. In followup patches we can optimize passthrough case.

Reviewed By: thurston

Differential Revision: https://reviews.llvm.org/D153495

12 months ago[XRay] Make xray_instr_map compatible with Mach-O
Fangrui Song [Thu, 22 Jun 2023 17:03:17 +0000 (10:03 -0700)]
[XRay] Make xray_instr_map compatible with Mach-O

The `__DATA,xray_instr_map` section has label differences like
`.quad Lxray_sled_0-Ltmp0` that is represented as a pair of UNSIGNED and SUBTRACTOR relocations.

LLVM integrated assembler attempts to rewrite A-B into A-B'+offset where B' can
be included in the symbol table. B' is called an atom and should be a
non-temporary symbol in the same section. However, since `xray_instr_map` does
not define a non-temporary symbol, the SUBTRACTOR relocation will have no
associated symbol, and its `r_extern` value will be 0. Therefore, we will see
linker errors like:

    error: SUBTRACTOR relocation must be extern at offset 0 of __DATA,xray_instr_map in a.o

To fix this issue, we need to define a non-temporary symbol in the section. We
can accomplish this by renaming `Lxray_sleds_start0` to `lxray_sleds_start0`
("L" to "l").

`lxray_sleds_start0` serves as the atom for this dead-strippable subsection.
With the `S_ATTR_LIVE_SUPPORT` attribute, `ld -dead_strip` will retain
subsections that reference live functions.

Special thanks to Oleksii Lozovskyi for reporting the issue and providing
initial analysis.

Differential Revision: https://reviews.llvm.org/D153239

12 months ago[NFC] Fix potential dereferencing of nullptr.
Sindhu Chittireddy [Mon, 19 Jun 2023 02:31:53 +0000 (19:31 -0700)]
[NFC] Fix potential dereferencing of nullptr.

Replace getAs with castAs and add assert if needed.
Differential revision: https://reviews.llvm.org/D153236

12 months ago[CodeGen] Extend reduction support in ComplexDeinterleaving pass to support predication
Igor Kirillov [Fri, 9 Jun 2023 16:03:22 +0000 (16:03 +0000)]
[CodeGen] Extend reduction support in ComplexDeinterleaving pass to support predication

Adds the capability to recognize SelectInst that appear in the IR.
These instructions are generated during scalable vectorization for reduction
and when the code contains conditions inside the loop body or when
"-prefer-predicate-over-epilogue=predicate-dont-vectorize" is set.

Differential Revision: https://reviews.llvm.org/D152558

12 months ago[libc][NFC] Simplify return value logic in set_thread_ptr()
Jun Zhang [Thu, 22 Jun 2023 16:38:41 +0000 (00:38 +0800)]
[libc][NFC] Simplify return value logic in set_thread_ptr()

Signed-off-by: Jun Zhang <jun@junz.org>
Differential Revision: https://reviews.llvm.org/D153572

12 months ago[libc] Add memory fences to device-local locking calls
Jon Chesterfield [Thu, 22 Jun 2023 16:46:08 +0000 (17:46 +0100)]
[libc] Add memory fences to device-local locking calls

This makes the interface less error prone. The acquire was previously
forgotten. Release is currently missing if recv() is the last operation made
before close.

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D153571

12 months ago[RISCV] Use GPR register class for RV64 ZDInx. Remove GPRF64 register class.
Craig Topper [Thu, 22 Jun 2023 16:38:46 +0000 (09:38 -0700)]
[RISCV] Use GPR register class for RV64 ZDInx. Remove GPRF64 register class.

The GPRF64 has the same spill size as GPR and is only used for RV64.
There's no real reason to have it as a separate class other than
for type inference for isel patterns in tablegen.

This patch adds f64 to the GPR register class when XLen=64. I use
f32 when XLen=32 even though we don't make use of it just to avoid
the oddity.

isel patterns have been updated to fix the lack of type infererence.

I might do similar for GPRF16 and GPRF32 or I might change them to
use an optimized spill size instead of always using XLen.

Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D153110

12 months ago[vscode-mlir] bump vsce version to 2.19.0
Yuanfang Chen [Wed, 21 Jun 2023 21:45:35 +0000 (14:45 -0700)]
[vscode-mlir] bump vsce version to 2.19.0

For https://bugs.chromium.org/p/llvm/issues/detail?id=46

Differential Revision: https://reviews.llvm.org/D153473

12 months ago[RISCV] Move Zca/Zcb/Zcd/Zcf/Zcmp/Zcmt out of experimental status.
Craig Topper [Thu, 22 Jun 2023 16:22:58 +0000 (09:22 -0700)]
[RISCV] Move Zca/Zcb/Zcd/Zcf/Zcmp/Zcmt out of experimental status.

According to https://wiki.riscv.org/display/HOME/Recently+Ratified+Extensions
these were ratified in April 2023.

Reviewed By: VincentWu

Differential Revision: https://reviews.llvm.org/D153161

12 months ago[mlir][LLVM] Fix empty res attr import
Christian Ulmann [Thu, 22 Jun 2023 14:53:21 +0000 (14:53 +0000)]
[mlir][LLVM] Fix empty res attr import

This commit ensures that an empty list of result attributes is not
imported as an empty `ArrayAttr`. Instead, the attribute is just not
added to the `LLVMFuncOp`.

Reviewed By: gysit

Differential Revision: https://reviews.llvm.org/D153553

12 months ago[SimplifyCFG] Add option to not speculate blocks
Arthur Eubanks [Tue, 20 Jun 2023 23:38:55 +0000 (16:38 -0700)]
[SimplifyCFG] Add option to not speculate blocks

Required for phase ordering changes to not regress Rust code with D145265.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D153391

12 months ago[clang][LTO] Add flag to run verifier after every pass
Arthur Eubanks [Wed, 21 Jun 2023 21:13:05 +0000 (14:13 -0700)]
[clang][LTO] Add flag to run verifier after every pass

Helps with debugging issues caught by the verifier.

Plumbed through both normal clang compile and ThinLTO.

Reviewed By: tejohnson

Differential Revision: https://reviews.llvm.org/D153468

12 months ago[RISCV] Strengthen atomic ordering for sequentially consistent stores
Paul Kirth [Wed, 19 Apr 2023 17:13:36 +0000 (17:13 +0000)]
[RISCV] Strengthen atomic ordering for sequentially consistent stores

This is a similar change to one proposed for GCC:
https://inbox.sourceware.org/gcc-patches/20230414170942.1695672-1-patrick@rivosinc.com/

The changes in this patch are based on the proposal by Hans Boehm to more
closely match the intended semantics for sequentially consistent stores
and to allow some platforms to avoid an ABI break when switching to more
performant atomic instructions. Platforms that have already compiled
code using the existing mappings will also have more time to gradually
replace that code in preparation of the switch.

Further details can be found in the psABI proposal:
https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/378.

This patch implements a mapping that is stronger than the one outlined in table
A.6 of the RISC-V unprivileged spec to be future compatible with table A.7 of
the same document. The related discussion can be found at
https://lists.riscv.org/g/tech-unprivileged/topic/risc_v_memory_model_topics/92916241

The major change to RISC-V code generation is that we will now emit a trailing
fence for sequentially consistent stores.

The new code sequence should have the following form:
```
fence rw,w; s{b|h|w|d}; fence rw,rw;
```

Other changes and optimizations like using amoswap will be handled separately.

Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D149486

12 months ago[ARM] add Thumb-1 8-bit movs/adds relocations to LLVM
Ties Stuij [Thu, 22 Jun 2023 14:47:42 +0000 (15:47 +0100)]
[ARM] add Thumb-1 8-bit movs/adds relocations to LLVM

This patch adds the LLVM-side plumbing for the following relocations:
- R_ARM_THM_ALU_ABS_G0_NC
- R_ARM_THM_ALU_ABS_G1_NC
- R_ARM_THM_ALU_ABS_G2_NC
- R_ARM_THM_ALU_ABS_G3

(see section 5.6.1.5, Static Thumb16 relocations, of the AArch32 ELF Arm ABI:
https://github.com/ARM-software/abi-aa/blob/844a79fd4c77252a11342709e3b27b2c9f590cf1/aaelf32/aaelf32.rst#5615static-thumb16-relocations)

Which can respectivly be generated by prefixing assembly symbols with:
- :lower0_7:
- :lower8_15:
- :upper0_7:
- :upper8_15:

LLD support for these relocations will be added in a follow-up patch

Reviewed By: john.brawn, MaskRay

Differential Revision: https://reviews.llvm.org/D149443

12 months ago[flang] add -flang-experimental-polymorphism flag to flang-new
David Truby [Thu, 22 Jun 2023 12:52:37 +0000 (13:52 +0100)]
[flang] add -flang-experimental-polymorphism flag to flang-new

This flag enables Fortran 2003 polymorphism. It is marked experimental
and not included in --help.

Reviewed By: tblah, awarzynski

Differential Revision: https://reviews.llvm.org/D153281

12 months agoRevert "Revert "[lld][Arm] Big Endian - Byte invariant support.""
Simi Pallipurath [Thu, 22 Jun 2023 12:55:59 +0000 (13:55 +0100)]
Revert "Revert "[lld][Arm] Big Endian - Byte invariant support.""

This reverts commit d8851384c6ac2a1cea15e05228dbde5f13654e23.

Reason: Applied the fix for the Asan buildbot failures.

12 months ago[SDAGBuilder] Handle multi-part arguments in argument copy elision (PR63430)
Nikita Popov [Wed, 21 Jun 2023 15:04:41 +0000 (17:04 +0200)]
[SDAGBuilder] Handle multi-part arguments in argument copy elision (PR63430)

When eliding an argument copy, we need to update the chain to ensure
the argument reads are performed before later writes. However, the
code doing this only handled this for the first part of the argument.
If the argument had multiple parts, the chains of the later parts were
dropped. Make sure we preserve all chains.

Fixes https://github.com/llvm/llvm-project/issues/63430.

12 months ago[LoopUnroll] Avoid undef indices in test (NFC)
Nikita Popov [Thu, 22 Jun 2023 14:54:42 +0000 (16:54 +0200)]
[LoopUnroll] Avoid undef indices in test (NFC)

Doesn't really matter for the larger purpose of the test, but
avoid the use of undef indices and instead use the loop induction
variable as index, which is what was likely intended here.

12 months ago[MLIR][OpenMP]Add Flang lowering support for device_ptr and device_addr clauses
Akash Banerjee [Tue, 20 Jun 2023 14:29:22 +0000 (15:29 +0100)]
[MLIR][OpenMP]Add Flang lowering support for device_ptr and device_addr clauses

Add lowering support for the use_device_ptr and use_Device_addr clauses for the Target Data directive.

Depends on D152822

Differential Revision: https://reviews.llvm.org/D152824

12 months ago[MLIR][OpenMP] Minor change to assembly format for Target Data op
Akash Banerjee [Tue, 20 Jun 2023 13:57:27 +0000 (14:57 +0100)]
[MLIR][OpenMP] Minor change to assembly format for Target Data op

Minor reordering of clauses in the assembly format for Target Data op to make it closer to the OpenMP standard.

Differential Revision: https://reviews.llvm.org/D152822

12 months ago[flang] Fix bug with generic and homonymous specific module procedure
Peter Klausler [Tue, 20 Jun 2023 20:45:22 +0000 (13:45 -0700)]
[flang] Fix bug with generic and homonymous specific module procedure

An unconditional EraseSymbol() call was deleting a generic interface symbol
when the generic had a module procedure of the same name as a specific
procedure, and the module procedure's definition appeared in the same
module.  Also clean up some applications of the MODULE attribute to
symbols created along the way.

Differential Revision: https://reviews.llvm.org/D153478

12 months ago[InstCombine] Fold assume(false) to non-terminator unreachable
Nikita Popov [Thu, 22 Jun 2023 10:15:58 +0000 (12:15 +0200)]
[InstCombine] Fold assume(false) to non-terminator unreachable

assume(false) is immediate UB, so fold it to (non-terminator)
unreachable.

12 months ago[LSR] Adjust test to make sure it keeps testing for the original issue.
Florian Hahn [Thu, 22 Jun 2023 14:36:31 +0000 (15:36 +0100)]
[LSR] Adjust test to make sure it keeps testing for the original issue.

Make sure the test keeps testing for the original issue after D153202.

12 months ago[flang] Fix USE with homonymous renaming
Peter Klausler [Wed, 21 Jun 2023 18:37:53 +0000 (11:37 -0700)]
[flang] Fix USE with homonymous renaming

Fortran requires that a USE with renaming prevent the USE'd symbol
from also being associated into a scope without renaming.  The
implementation in name resolution gets confused in the case of
a USE with renaming using the same name ("x => x").  Clean things
up.  Fixes LLVM bug https://github.com/llvm/llvm-project/issues/63397.

Differential Revision: https://reviews.llvm.org/D153452

12 months ago[InstCombine] Remove instructions before non-terminator unreachable
Nikita Popov [Thu, 22 Jun 2023 14:19:47 +0000 (16:19 +0200)]
[InstCombine] Remove instructions before non-terminator unreachable

Treat non-terminator unreachable the same as unreachable, and
remove guaranteed-to-transfer instructions before it.

12 months ago[InstCombine] Add additional instructions in non-term unreachable test (NFC)
Nikita Popov [Thu, 22 Jun 2023 14:29:17 +0000 (16:29 +0200)]
[InstCombine] Add additional instructions in non-term unreachable test (NFC)

12 months ago[InstCombine] Avoid UB in tests (NFC)
Nikita Popov [Thu, 22 Jun 2023 14:25:49 +0000 (16:25 +0200)]
[InstCombine] Avoid UB in tests (NFC)

12 months ago[flang] Rewrite "1*j" to "(j)", not "j", when j is a variable
Peter Klausler [Wed, 21 Jun 2023 19:43:55 +0000 (12:43 -0700)]
[flang] Rewrite "1*j" to "(j)", not "j", when j is a variable

Expression folding currently unconditionally rewrites "1*j"
to "j", which is wrong when "j" is a variable, as it transforms
an expression into a variable and can lead to incorrect associations
in contexts like an actual argument or an ASSOCIATE selector.
Transform "1*j" to a parenthesized "(j)" when "j" is a variable.
Fixes LLVM bug https://github.com/llvm/llvm-project/issues/63259.

Differential Revision: https://reviews.llvm.org/D153457

12 months ago[flang] Fix looping on LEN type parameter usage
Peter Klausler [Wed, 21 Jun 2023 20:35:53 +0000 (13:35 -0700)]
[flang] Fix looping on LEN type parameter usage

When a LEN type parameter of one PDT is being used as the value
of a LEN type parameter in another PDT, expression rewriting can
loop infinitely due to an incorrect assumption that the same PDT's
parameters are being referenced.

Fixes LLVM bug https://github.com/llvm/llvm-project/issues/63198

Differential Revision: https://reviews.llvm.org/D153465

12 months ago[InstCombine] Remove code after non-terminator unreachable
Nikita Popov [Thu, 22 Jun 2023 13:37:33 +0000 (15:37 +0200)]
[InstCombine] Remove code after non-terminator unreachable

Instruction after a non-terminator unreachable are ... unreachable,
so remove them. Reuse the same logic we use for removing
instructions from dead blocks.

12 months ago[InstCombine] Add test for code after non-terminator unreachable (NFC)
Nikita Popov [Thu, 22 Jun 2023 13:56:41 +0000 (15:56 +0200)]
[InstCombine] Add test for code after non-terminator unreachable (NFC)

12 months ago[InstCombine] Don't remove non-terminator unreachable markers
Nikita Popov [Thu, 22 Jun 2023 13:50:22 +0000 (15:50 +0200)]
[InstCombine] Don't remove non-terminator unreachable markers

Even if the value happens to be undef, we should preserve these so
they get turned into an unreachable terminator later.

12 months ago[flang] Error recovery in bad specific MIN/MAX calls
Peter Klausler [Wed, 21 Jun 2023 21:33:48 +0000 (14:33 -0700)]
[flang] Error recovery in bad specific MIN/MAX calls

When a specific MIN/MAX intrinsic function (e.g. MAX1) reference
has an actual argument error, ensure that a later attempt to fold
the call into a constant doesn't crash due to a missing argument.
Fixes https://github.com/llvm/llvm-project/issues/63140

Differential Revision: https://reviews.llvm.org/D153470

12 months ago[InstCombine] Avoid UB in tests (NFC)
Nikita Popov [Thu, 22 Jun 2023 13:42:31 +0000 (15:42 +0200)]
[InstCombine] Avoid UB in tests (NFC)

12 months ago[flang] Rework name resolution of Cray pointer declarations
Peter Klausler [Tue, 20 Jun 2023 22:40:35 +0000 (15:40 -0700)]
[flang] Rework name resolution of Cray pointer declarations

The current code has redundancy with the infrastructure for
declaration checking that can be replaced by better usage of
the parse tree walking framework.  This also fixes LLVM flang
bug #58971.

Differential Revision: https://reviews.llvm.org/D153385

12 months agowip
Peter Klausler [Tue, 20 Jun 2023 16:36:12 +0000 (09:36 -0700)]
wip

12 months ago[Headers][doc] Add various arith/logical intrinsic descriptions to avx2intrin.h
Paul Robinson [Wed, 21 Jun 2023 20:01:32 +0000 (13:01 -0700)]
[Headers][doc] Add various arith/logical intrinsic descriptions to avx2intrin.h

Differential Revision: https://reviews.llvm.org/D153462

12 months ago[include-cleaner] No need to overwrite the source file if there is no
Haojian Wu [Thu, 22 Jun 2023 12:35:28 +0000 (14:35 +0200)]
[include-cleaner] No need to overwrite the source file if there is no
cleanups

12 months agoRevert "Revert "Revert "[LLD][ELF] Cortex-M Security Extensions (CMSE) Support"""
Mitch Phillips [Thu, 22 Jun 2023 12:28:42 +0000 (14:28 +0200)]
Revert "Revert "Revert "[LLD][ELF] Cortex-M Security Extensions (CMSE) Support"""

This reverts commit 9246df7049b0bb83743f860caff4221413c63de2.

Reason: This patch broke the UBSan buildbots. See more information in
the original phabricator review: https://reviews.llvm.org/D139092

12 months ago[AMDGPU] Regenerate some checks
Jay Foad [Thu, 22 Jun 2023 11:25:16 +0000 (12:25 +0100)]
[AMDGPU] Regenerate some checks

12 months ago[AArch64] Remove G_VECREDUCE_FADD from selectReduction
David Green [Thu, 22 Jun 2023 11:46:54 +0000 (12:46 +0100)]
[AArch64] Remove G_VECREDUCE_FADD from selectReduction

I believe that for fp reductions we can use the imported tablegen patterns for
selection, as opposed to going via selectReduction. Integer reductions are more
difficult, as the return types in selection DAG will be promoted to i32.

Differential Revision: https://reviews.llvm.org/D153244

12 months ago[AMDGPU] Switch to the new cl option amdgpu-atomic-optimizer-strategy.
Pravin Jagtap [Thu, 22 Jun 2023 11:03:47 +0000 (07:03 -0400)]
[AMDGPU] Switch to the new cl option amdgpu-atomic-optimizer-strategy.

Atomic optimizer is turned on by default through D152649. This patch
removes the usage of old command line option amdgpu-atomic-optimizations
and transfer the responsibility to `amdgpu-atomic-optimizer-strategy`.

We can safely remove old option when LLPC remove its all usage.

Reviewed By: foad, arsenm, #amdgpu, cdevadas

Differential Revision: https://reviews.llvm.org/D153007

12 months ago[LoopUnroll] Regenerate test checks (NFC)
Nikita Popov [Thu, 22 Jun 2023 11:00:02 +0000 (13:00 +0200)]
[LoopUnroll] Regenerate test checks (NFC)

12 months ago[InstCombine] Use CreateNonTerminatorUnreachable() helper
Nikita Popov [Thu, 22 Jun 2023 10:23:46 +0000 (12:23 +0200)]
[InstCombine] Use CreateNonTerminatorUnreachable() helper

Create the standard non-terminator unreachable, rather than a
slight variation on it.

12 months ago[NFC SVE ACLE] Remove IR combines that no longer apply.
Jolanta Jensen [Tue, 20 Jun 2023 12:51:41 +0000 (12:51 +0000)]
[NFC SVE ACLE] Remove IR combines that no longer apply.

Remove IR combines that no longer apply after the SVE merging
intrinsics taking an all active predicate, have been canonicalised
to their equivalent undef (_u) variants.

Differential Revision: https://reviews.llvm.org/D153415

12 months agoDAG: Expand legalization of is.fpclass to fcmp for DAZ
Matt Arsenault [Wed, 1 Feb 2023 00:27:51 +0000 (20:27 -0400)]
DAG: Expand legalization of is.fpclass to fcmp for DAZ

Try to use a compare with 0 if DAZ is assumed.
FPClassTest really needs to be marked as a bimask enum, but the API
for that is currently broken.

12 months agoAdd some unit tests for DenormalMode helper
Matt Arsenault [Thu, 22 Jun 2023 01:31:36 +0000 (21:31 -0400)]
Add some unit tests for DenormalMode helper

Split out from D143180

12 months ago[DAG] ScalarizeVectorResult - add ISD::MULHS/ISD::MULHU handling
Simon Pilgrim [Thu, 22 Jun 2023 10:04:54 +0000 (11:04 +0100)]
[DAG] ScalarizeVectorResult - add ISD::MULHS/ISD::MULHU handling

Fixes #63439

12 months ago[AMDGPU][GFX11] Add test coverage for 16-bit conversions, part 14.
Ivan Kosarev [Thu, 22 Jun 2023 09:47:58 +0000 (10:47 +0100)]
[AMDGPU][GFX11] Add test coverage for 16-bit conversions, part 14.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D152907

12 months ago[AMDGPU][GFX11] Add test coverage for 16-bit conversions, part 13.
Ivan Kosarev [Thu, 22 Jun 2023 09:04:05 +0000 (10:04 +0100)]
[AMDGPU][GFX11] Add test coverage for 16-bit conversions, part 13.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D152906

12 months ago[mlir][linalg] Remove duplicate tensor.pad lowering pattern
Matthias Springer [Thu, 22 Jun 2023 09:30:57 +0000 (11:30 +0200)]
[mlir][linalg] Remove duplicate tensor.pad lowering pattern

There is another transform that lowers tensor.pad to tensor.empty + linalg.fill + tensor.insert_slice: `transform.structured.rewrite_in_destination_passing_style`. Delete the other transform.

Differential Revision: https://reviews.llvm.org/D153429

12 months ago[clang-tidy][NFC] Add missing argument comment to LexerUtils.cpp
Piotr Zegar [Thu, 22 Jun 2023 08:02:20 +0000 (08:02 +0000)]
[clang-tidy][NFC] Add missing argument comment to LexerUtils.cpp

D148697 post commit review change.

12 months ago[mlir][affine] Fix build after D153324
Matthias Springer [Thu, 22 Jun 2023 09:03:10 +0000 (11:03 +0200)]
[mlir][affine] Fix build after D153324

12 months ago[mlir][tensor] Clean up tensor::DimOp usage
Matthias Springer [Thu, 22 Jun 2023 08:49:37 +0000 (10:49 +0200)]
[mlir][tensor] Clean up tensor::DimOp usage

* Remove duplicate functions. `tensor::getMixedSize` and `tensor::getMixedSizes` should be used.
* Use `tensor::getMixedSize` instead of `createOrFold<tensor::DimOp>`. This is more efficient. `createOrFold` will create an op an immediately try to fold it. In case of a static dimension size, an attribute can be used directly.

Differential Revision: https://reviews.llvm.org/D153332

12 months ago[AArch64] Mark vecreduce_fminimum and vecreduce_fmaximum as legal
David Green [Thu, 22 Jun 2023 08:52:02 +0000 (09:52 +0100)]
[AArch64] Mark vecreduce_fminimum and vecreduce_fmaximum as legal

This adds some simple lowering of vecreduce_fminimum and vecreduce_fmaximum to
fminv/fmaxv instructions, in the same way that vecreduce_fmax / vecreduce_fmin
is lowered to fminnmv / fmaxnmv.

Differential Revision: https://reviews.llvm.org/D153246

12 months ago[SCEV] Don't store AddRec loop when simplifying multiplication of AddRecs
Dmitry Makogon [Mon, 19 Jun 2023 09:33:46 +0000 (16:33 +0700)]
[SCEV] Don't store AddRec loop when simplifying multiplication of AddRecs

When multiplying several AddRecs, we do the following simplification:

{A1,+,A2,+,...,+,An}<L> * {B1,+,B2,+,...,+,Bn}<L> = {x=1 in [ sum y=x..2x
[ sum z=max(y-x, y-n)..min(x,n) [
choose(x, 2x)*choose(2x-y, x-z)*A_{y-z}*B_z]]
],+,...up to x=2n}

This is done iteratively, pair by pair. So if we try to multiply three AddRecs
A1, A2, A3, then we'd try to simplify A1 * A2 to A1' and then try to
simplify A1' * A3 if A1' is also an AddRec.
The transform is only legal if the loops of the two AddRecs are the same.
It is checked in the code, but the loop of one of the AddRecs is stored
in a local variable and doesn't get updated when we simplify a pair to a new AddRec.
In the motivating test the new AddRec A1' was created for a different loop and,
as the loop variable didn't get updated, the check for different loops passed and
the transform worked for two AddRecs from different loops.
So it created a wrong SCEV. And it caused LSR to replace an instruction with another
one that had the same SCEV as the incorrectly computed one.

Differential Revision: https://reviews.llvm.org/D153254

12 months ago[mlir][affine] More efficient `makeComposedFolded...` helpers
Matthias Springer [Thu, 22 Jun 2023 08:39:34 +0000 (10:39 +0200)]
[mlir][affine] More efficient `makeComposedFolded...` helpers

The old code used to materialize constants as ops, immediately folded them into the resulting affine map and then deleted the constant ops again. Instead, directly fold the attributes into the affine map. Furthermore, all helpers accept `OpFoldResult` instead of `Value` now. This makes the code at call sites more efficient, because it is no longer necessary to materialize a `Value`, just to be able to use these helper functions.

Note: The API has changed (accepts OpFoldResult instead of Value), otherwise this change is NFC.

Differential Revision: https://reviews.llvm.org/D153324

12 months ago[AMDGPU] Add llvm.amdgcn.cs.chain intrinsic to IR & verifier
Diana Picus [Wed, 7 Jun 2023 08:47:22 +0000 (10:47 +0200)]
[AMDGPU] Add llvm.amdgcn.cs.chain intrinsic to IR & verifier

We only check a subset of the constraints in the verifier:
* that we only call the intrinsic from functions with a restricted set of
calling conventions
* that the 'flags' argument is an immediate

Other checks are (probably) more appropriate for codegen.

Differential Revision: https://reviews.llvm.org/D151995

12 months ago[AMDGPU] Add amdgpu_cs_chain[_preserve] CCs to IR & verifier
Diana Picus [Wed, 7 Jun 2023 08:18:31 +0000 (10:18 +0200)]
[AMDGPU] Add amdgpu_cs_chain[_preserve] CCs to IR & verifier

Add the amdgpu_cs_chain and amdgpu_cs_chain_preserve keywords to
LLVM IR and make sure we can parse and print them. Also make sure we
perform some basic checks in the IR verifier - similar to what we check
for many of the other AMDGPU calling conventions, plus the additional
restriction that we can't have direct calls to functions with these
calling conventions.

Differential Revision: https://reviews.llvm.org/D151994

12 months ago[BOLT][RISCV] Add tests for simple CFG transformations
Job Noorman [Thu, 22 Jun 2023 07:34:57 +0000 (09:34 +0200)]
[BOLT][RISCV] Add tests for simple CFG transformations

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D153346