platform/upstream/llvm.git
2 years ago[SLP] Add basic self consistency asserts into scheduling
Philip Reames [Thu, 3 Feb 2022 21:23:02 +0000 (13:23 -0800)]
[SLP] Add basic self consistency asserts into scheduling

The idea here is to have a verify routine we can call during scheduling to ensure broken invariants are reported.  The intent is to help in debugging scheduling bugs.

At the moment, only the most basic properties are checked as adding several I thought held reported failures.

2 years ago[mlir][scf] Fix bug in pipelining prologue emission
Thomas Raoux [Thu, 3 Feb 2022 19:42:49 +0000 (11:42 -0800)]
[mlir][scf] Fix bug in pipelining prologue emission

Induction variable calculation was ignoring scf.for step value. Fix it to get
the correct induction variable value in the prologue.

Differential Revision: https://reviews.llvm.org/D118932

2 years ago[VFS] Add a "redirecting-with" field to overlays
Ben Barham [Thu, 3 Feb 2022 20:53:22 +0000 (12:53 -0800)]
[VFS] Add a "redirecting-with" field to overlays

Extend "fallthrough" to allow a third option: "fallback". Fallthrough
allows the original path to used if the redirected (or mapped) path
fails. Fallback is the reverse of this, ie. use the original path and
fallback to the mapped path otherwise.

While this result *can* be achieved today using multiple overlays, this
adds a much more intuitive option. As an example, take two directories
"A" and "B". We would like files from "A" to be used, unless they don't
exist, in which case the VFS should fallback to those in "B".

With the current fallthrough option this is possible by adding two
overlays: one mapping from A -> B and another mapping from B -> A. Since
the frontend *nests* the two RedirectingFileSystems, the result will
be that "A" is mapped to "B" and back to "A", unless it isn't in "A" in
which case it fallsthrough to "B" (or fails if it exists in neither).

Using "fallback" semantics allows a single overlay instead: one mapping
from "A" to "B" but only using that mapping if the operation in "A"
fails first.

"redirect-only" is used to represent the current "fallthrough: false"
case.

Differential Revision: https://reviews.llvm.org/D117937

2 years ago[HWASan] Add __hwasan_init to .preinit_array.
Matt Morehouse [Thu, 3 Feb 2022 21:07:11 +0000 (13:07 -0800)]
[HWASan] Add __hwasan_init to .preinit_array.

Fixes segfaults on x86_64 caused by instrumented code running before
shadow is set up.

Reviewed By: pcc

Differential Revision: https://reviews.llvm.org/D118171

2 years ago[AMDGPU] Fix scheduler live-ins with debug inst at start of block
Vang Thao [Wed, 2 Feb 2022 23:33:40 +0000 (15:33 -0800)]
[AMDGPU] Fix scheduler live-ins with debug inst at start of block

GCNDownwardRPTracker RPTracker.reset() skips debug instructions for NextMI so RPTracker.getNext() will never give the beginning of a sched region if it is a debug value. In this case we will never set the live-ins for that block.

Add check to see if getNext also equals the MI after skipping debug instructions.

Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D118853

2 years ago[nfc][regalloc] const LiveIntervals within the allocator
Mircea Trofin [Thu, 3 Feb 2022 17:07:42 +0000 (09:07 -0800)]
[nfc][regalloc] const LiveIntervals within the allocator

Once built, LiveIntervals are immutable. This patch captures that.

Differential Revision: https://reviews.llvm.org/D118918

2 years ago[tests] Add coverage for SLP reschedule event
Philip Reames [Thu, 3 Feb 2022 20:22:25 +0000 (12:22 -0800)]
[tests] Add coverage for SLP reschedule event

This is slightly reduced from the crash reported against D117951.

2 years ago[SampleProfile] Reduce indentation with an early return (NFC)
Kazu Hirata [Thu, 3 Feb 2022 20:22:23 +0000 (12:22 -0800)]
[SampleProfile] Reduce indentation with an early return (NFC)

2 years ago[CodeGenPrepare] Avoid out-of-bounds shift
Bjorn Pettersson [Mon, 31 Jan 2022 12:49:35 +0000 (13:49 +0100)]
[CodeGenPrepare] Avoid out-of-bounds shift

AddressingModeMatcher::matchOperationAddr may attempt to shift a
variable by the same amount of steps as found in the IR in a SHL
instruction. This was done without considering that there could be
undefined behavior in the IR, so the shift performed when compiling
could end up having undefined behavior as well.

This patch avoid UB in the codegenprepare by making sure that we
limit the shift amount used, in a similar way as already being done
in CodeGenPrepare::optimizeLoadExt.

Differential Revision: https://reviews.llvm.org/D118602

2 years ago[AMDGPU] Fix windows build warning with IMMBitSelConst. NFC.
Stanislav Mekhanoshin [Thu, 3 Feb 2022 19:44:45 +0000 (11:44 -0800)]
[AMDGPU] Fix windows build warning with IMMBitSelConst. NFC.

VS gives this warning for an integer constant:
AMDGPUGenDAGISel.inc(214687): warning C4334: '<<': result of 32-bit
shift implicitly converted to 64 bits (was 64-bit shift intended?)

2 years ago[lld][clang][cmake] Clean up a few things
John Ericson [Wed, 2 Feb 2022 15:37:13 +0000 (15:37 +0000)]
[lld][clang][cmake] Clean up a few things

- If not using `llvm-config`, `LLVM_MAIN_SRC_DIR` now has a sane default

- `LLVM_CONFIG_PATH` will continue to work for LLD for back compat.

- More quoting of paths in an abundance of caution.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D118792

2 years ago[mlir:Vector][NFC] Remove unnecessary dependency on Affine
River Riddle [Thu, 3 Feb 2022 19:45:39 +0000 (11:45 -0800)]
[mlir:Vector][NFC] Remove unnecessary dependency on Affine

2 years ago[LLDB] Fix window bot failure
Zequan Wu [Thu, 3 Feb 2022 01:12:40 +0000 (17:12 -0800)]
[LLDB] Fix window bot failure

This attempts to fix this bot failure: https://lab.llvm.org/buildbot/#/builders/83/builds/14736 caused by D118750 by un-xfail those expected failed tests.

Differential Revision: https://reviews.llvm.org/D118866

2 years ago[AArch64][SVE] Add more folds to make use of gather/scatter with 32-bit indices
Caroline Concatto [Thu, 13 Jan 2022 16:52:41 +0000 (16:52 +0000)]
[AArch64][SVE] Add more folds to make use of gather/scatter with 32-bit indices

In AArch64ISelLowering.cpp this patch implements this fold:

1) GEP (%ptr, SHL ((stepvector(A) + splat(%offset))) << splat(B)))
into GEP (%ptr + (%offset << B), step_vector (A << B))

The above transform simplifies the index operand so that it can be expressed
as i32 elements.
This allows using only one gather/scatter assembly instruction instead of two.

Patch by Paul Walker (@paulwalker-arm).

Depends on D117900

Differential Revision: https://reviews.llvm.org/D118345

2 years ago[NFC] [hwasan] use InstIterator
Florian Mayer [Thu, 3 Feb 2022 01:07:19 +0000 (17:07 -0800)]
[NFC] [hwasan] use InstIterator

Differential Revision: https://reviews.llvm.org/D118865

2 years ago[llvm-libtool-darwin] Remove var to fix use
Keith Smiley [Thu, 3 Feb 2022 19:05:18 +0000 (19:05 +0000)]
[llvm-libtool-darwin] Remove var to fix use

This seems to have been moved so the second use is invalid on Linux but
not macOS

2 years ago[nfc] [mte] use InstrIter.
Florian Mayer [Thu, 3 Feb 2022 18:19:26 +0000 (10:19 -0800)]
[nfc] [mte] use InstrIter.

this improves code clarity.

2 years ago[AArch64][SVE] Fold gather/scatter with 32bits when possible
Caroline Concatto [Thu, 13 Jan 2022 16:52:41 +0000 (16:52 +0000)]
[AArch64][SVE] Fold gather/scatter with 32bits when possible

In AArch64ISelLowering.cpp this patch implements this fold:

GEP (%ptr, (splat(%offset) + stepvector(A)))
into GEP ((%ptr + %offset), stepvector(A))

The above transform simplifies the index operand so that it can be expressed
as i32 elements.
This allows using only one gather/scatter assembly instruction instead of two.

Patch by Paul Walker (@paulwalker-arm).

Depends on D118459

Differential Revision: https://reviews.llvm.org/D117900

2 years ago[mlir][NFC] Split MlirQuant into proper IR/Utils/Transforms libraries
River Riddle [Thu, 3 Feb 2022 18:41:14 +0000 (10:41 -0800)]
[mlir][NFC] Split MlirQuant into proper IR/Utils/Transforms libraries

This matches the structure of other dialects, and also removes
unnecessary dependencies from the core dialect lib.

2 years ago[mli][Linalg] NFC: Refactor methods in `ElementwiseOpFusion`.
Mahesh Ravishankar [Thu, 3 Feb 2022 18:40:26 +0000 (18:40 +0000)]
[mli][Linalg] NFC: Refactor methods in `ElementwiseOpFusion`.

Reorder the methods and patterns to move related patterns/methods
closer (textually).

Reviewed By: gysit

Differential Revision: https://reviews.llvm.org/D118870

2 years agosanitizer_common: fix __sanitizer_get_module_and_offset_for_pc signature mismatch
Dmitry Vyukov [Thu, 3 Feb 2022 15:04:34 +0000 (16:04 +0100)]
sanitizer_common: fix __sanitizer_get_module_and_offset_for_pc signature mismatch

This fixes the following error:

sanitizer_interface_internal.h:77:7: error: conflicting types for
     '__sanitizer_get_module_and_offset_for_pc'
  int __sanitizer_get_module_and_offset_for_pc(
common_interface_defs.h:349:5: note: previous declaration is here
int __sanitizer_get_module_and_offset_for_pc(void *pc, char *module_path,

I am getting it on a code that uses sanitizer_common (includes internal headers),
but also transitively gets includes of the public headers in tests
via an internal version of gtest.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D118910

2 years ago[clang-format] regression from clang-format v13
mydeveloperday [Thu, 3 Feb 2022 18:36:56 +0000 (18:36 +0000)]
[clang-format] regression from clang-format v13

https://github.com/llvm/llvm-project/issues/53567

The following source

```
namespace A {

template <int N> struct Foo<char[N]> {
  void foo() { std::cout << "Bar"; }
}; // namespace A
```

is incorrectly formatted as:

```
namespace A {

template <int N> struct Foo<char[N]>{void foo(){std::cout << "Bar";
}
}
; // namespace A
```

This looks to be caused by https://github.com/llvm/llvm-project/commit/5c2e7c9ca043d92bed75b08e653fb47c384edd13

Reviewed By: curdeius

Differential Revision: https://reviews.llvm.org/D118911

2 years ago[llvm-libtool-darwin] Improve warning message for no symbols
Keith Smiley [Thu, 3 Feb 2022 01:19:58 +0000 (17:19 -0800)]
[llvm-libtool-darwin] Improve warning message for no symbols

This more closely mirrors apple's libtool, and also potentially makes it
clearer for multi-arch archives where the issue lies.

Differential Revision: https://reviews.llvm.org/D118867

2 years ago[Clang][Docs] Add documention for new OpenMP offloading driver
Joseph Huber [Wed, 2 Feb 2022 18:06:55 +0000 (13:06 -0500)]
[Clang][Docs] Add documention for new OpenMP offloading driver

This patch adds more documentation for the OpenMP offloading driver.
This includes a new file that describes the overall pipeline becuase
that was not previously explained in full elsewhere.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D118815

2 years ago[Support][NFC] Don’t duplicate class or function name in comment
Amir Ayupov [Wed, 2 Feb 2022 23:37:32 +0000 (15:37 -0800)]
[Support][NFC] Don’t duplicate class or function name in comment

Refactor comments in CommandLine.h to follow the Coding Style rule

Reviewed By: MaskRay, serge-sans-paille

Differential Revision: https://reviews.llvm.org/D118859

2 years ago[clang-format] Avoid merging macro definitions.
Marek Kurdej [Thu, 3 Feb 2022 17:46:35 +0000 (18:46 +0100)]
[clang-format] Avoid merging macro definitions.

Fixes https://github.com/llvm/llvm-project/issues/42087.

Reviewed By: HazardyKnusperkeks, owenpan

Differential Revision: https://reviews.llvm.org/D118879

2 years ago[clang-format] Avoid adding space after the name of a function-like macro when the...
Marek Kurdej [Thu, 3 Feb 2022 17:29:53 +0000 (18:29 +0100)]
[clang-format] Avoid adding space after the name of a function-like macro when the name is a keyword.

Fixes https://github.com/llvm/llvm-project/issues/31086.

Before the code:
```
#define if(x)
```

was erroneously formatted to:
```
#define if (x)
```

Reviewed By: HazardyKnusperkeks, owenpan

Differential Revision: https://reviews.llvm.org/D118844

2 years ago[RISCV] Add FMV_X_W and FMV_X_H to RISCVSExtWRemoval.
Craig Topper [Thu, 3 Feb 2022 17:26:34 +0000 (09:26 -0800)]
[RISCV] Add FMV_X_W and FMV_X_H to RISCVSExtWRemoval.

Add -target-abi to sextw-removal.ll RUN lines to show benefit on
new test case.

2 years ago[AMDGPU] HWRegs TMA and TBA also supported on gfx9
Stanislav Mekhanoshin [Wed, 2 Feb 2022 23:51:11 +0000 (15:51 -0800)]
[AMDGPU] HWRegs TMA and TBA also supported on gfx9

Differential Revision: https://reviews.llvm.org/D118860

2 years ago[x86] add minimal test for sbb idiom and CPU capabilities; NFC
Sanjay Patel [Thu, 3 Feb 2022 17:05:40 +0000 (12:05 -0500)]
[x86] add minimal test for sbb idiom and CPU capabilities; NFC

D116804 proposes to alter codegen on this example based on
CPU tuning, so check a variety of models to confirm it works
as expected. We already have this test mixed in with several
others in another test file, but it seems wasteful to add so
many RUN lines to check this difference over and over again.

2 years ago[x86] remove CPU requirement for RUN line in test file; NFC
Sanjay Patel [Thu, 3 Feb 2022 16:56:04 +0000 (11:56 -0500)]
[x86] remove CPU requirement for RUN line in test file; NFC

A proposed change ( D118843 ) that would affect this test
will not require a specific CPU model to show a difference.

2 years ago[hwasan] add musttail IR test.
Florian Mayer [Wed, 2 Feb 2022 23:44:41 +0000 (15:44 -0800)]
[hwasan] add musttail IR test.

we currently only have a test at the clang level

Reviewed By: morehouse

Differential Revision: https://reviews.llvm.org/D118856

2 years agoRevert "[nfc][mlgo] De-const a parameter"
Mircea Trofin [Thu, 3 Feb 2022 17:10:06 +0000 (09:10 -0800)]
Revert "[nfc][mlgo] De-const a parameter"

This reverts commit bc3b372161716a4c4845d47a877e4892df0d08da.

The planned change that would have needed non-const MachineFunction refs
isn't needed after all.

2 years ago[SLP] Fix a typo in comment
Philip Reames [Thu, 3 Feb 2022 17:10:42 +0000 (09:10 -0800)]
[SLP] Fix a typo in comment

2 years ago[lldb] Fix windows&mac builds for c34698a811b13
Pavel Labath [Thu, 3 Feb 2022 17:06:19 +0000 (18:06 +0100)]
[lldb] Fix windows&mac builds for c34698a811b13

2 years ago[AMDGPU] Introduce new ISel combine for trunc-slr patterns
Thomas Symalla [Fri, 28 Jan 2022 11:27:54 +0000 (12:27 +0100)]
[AMDGPU] Introduce new ISel combine for trunc-slr patterns

In some cases, when selecting a (trunc (slr)) pattern, the slr gets translated
to a v_lshrrev_b3e2_e64 instruction whereas the truncation gets selected to
a sequence of v_and_b32_e64 and v_cmp_eq_u32_e64. In the final ISA, this appears
as selecting the nth-bit:

v_lshrrev_b32_e32 v0, 2, v1
v_and_b32_e32 v0, 1, v0
v_cmp_eq_u32_e32 vcc_lo, 1, v0

However, when the value used in the right shift is known at compilation time, the
whole sequence can be reduced to two VALUs when the constant operand in the v_and is adjusted to (1 << lshrrev_operand):

v_and_b32_e32 v0, (1 << 2), v1
v_cmp_ne_u32_e32 vcc_lo, 0, v0

In the example above, the following pseudo-code:

v0 = (v1 >> 2)
v0 = v0 & 1
vcc_lo = (v0 == 1)

would be translated to:

v0 = v1 & 0b100
vcc_lo = (v0 == 0b100)

which should yield an equivalent result.
This is a little bit hard to test as one needs to force the SelectionDAG to
contain the nodes before instruction selection, but the test sequence was
roughly derived from a production shader.

Reviewed By: foad

Differential Revision: https://reviews.llvm.org/D118461

2 years ago[mlir-translate] Teach these tools about --allow-unregistered-dialect
Chris Lattner [Thu, 3 Feb 2022 05:40:41 +0000 (21:40 -0800)]
[mlir-translate] Teach these tools about --allow-unregistered-dialect

Some translations do work with unregistered dialects, this allows one
to write testcases against them.  It works the same way as it does for
mlir-opt.

Differential Revision: https://reviews.llvm.org/D118872

2 years ago[AARCH64][NEON] Allow to sink operands for aarch64_neon_pmull
Sunho Kim [Thu, 3 Feb 2022 16:46:49 +0000 (16:46 +0000)]
[AARCH64][NEON] Allow to sink operands for aarch64_neon_pmull

This teaches AArch64TargetLowering::shouldSinkOperands to sink the
operands of aarch64_neon_pmull intrinsic.

Differential Revision: https://reviews.llvm.org/D117944

2 years ago[test] check strictest attributes possible for InferFunctionAttrs test
Augie Fackler [Thu, 3 Feb 2022 16:39:15 +0000 (08:39 -0800)]
[test] check strictest attributes possible for InferFunctionAttrs test

This appears to have all the same attributes as many other functions
in this file, and I think the use of INACCESSIBLEMEMONLY_NOFREE_NOUNWIND
instead of INACCESSIBLEMEMONLY_NOFREE_NOUNWIND_WILLRETURN was an
oversight that meant aligned_alloc's attributes were just going
unchecked. This patch corrects the test defect and now the attributes
inferred on aligned_alloc are actually validated, and the test still
passes.

Differential Revision: https://reviews.llvm.org/D117922

2 years agoadd IR compatability test for (upcoming) allocsize attribute
Augie Fackler [Thu, 3 Feb 2022 16:31:44 +0000 (08:31 -0800)]
add IR compatability test for (upcoming) allocsize attribute

2 years ago[NFC] MemoryBuiltins: tease out a getFreeFunctionDataForFunction helper
Augie Fackler [Thu, 3 Feb 2022 16:30:37 +0000 (08:30 -0800)]
[NFC] MemoryBuiltins: tease out a getFreeFunctionDataForFunction helper

2 years ago[RISCV] Remove createVirtualRegister from RISCVInstrInfo::movImm.
Craig Topper [Thu, 3 Feb 2022 16:30:39 +0000 (08:30 -0800)]
[RISCV] Remove createVirtualRegister from RISCVInstrInfo::movImm.

Based on the discussion in D61884, this was done to enable compressed
instructions by giving freedom to pick a compressible register.

Integer materializing can generate LUI, ADDI, ADDIW, SLLI and some
Zb* instructions. C.LI, C.LUI, C.ADDI, C.ADDIW, and C.SLLI all have a 5-bit
register encoding. The Zb* instructions aren't compressible. Based on
that I don't think compressibility of the register is a concern.

Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D118741

2 years ago[clang-tidy] Fix LLVM include order check policy
Kadir Cetinkaya [Thu, 3 Feb 2022 16:26:41 +0000 (17:26 +0100)]
[clang-tidy] Fix LLVM include order check policy

Clang-format LLVM style has a custom include category for gtest/ and
gmock/ headers between regular includes and angled includes. Do the same here.

Fixes https://github.com/llvm/llvm-project/issues/53525.

Differential Revision: https://reviews.llvm.org/D118913

2 years ago[RISCV] Remove RISCVISD::SPLAT_VECTOR_I64 in favor of RISCVISD::VMV_V_X_VL.
Craig Topper [Thu, 3 Feb 2022 16:23:34 +0000 (08:23 -0800)]
[RISCV] Remove RISCVISD::SPLAT_VECTOR_I64 in favor of RISCVISD::VMV_V_X_VL.

SPLAT_VECTOR_I64 has the same semantics as RISCVISD::VMV_V_X_VL, it
just assumed VLMax instead of carrying a VL operand.

Include order of RISCVInstrInfoVSDPatterns.td and RISCVInstrInfoVVLPatterns.td
has been swapped to avoid moving riscv_vmv_v_x_vl into
RISCVInstrInfoVSDPatterns.td and to allow moving other "_vl" SDNodes back to
RISCVInstrInfoVVLPatterns.td

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D118841

2 years agoMemoryBuiltins: simplify isLibFreeFunction [NFC]
Augie Fackler [Thu, 3 Feb 2022 16:21:09 +0000 (08:21 -0800)]
MemoryBuiltins: simplify isLibFreeFunction [NFC]

This is in anticipation of my next patch, where I need to store more information about free functions than just their argument count. It felt invasive enough on this function that it seemed worthwhile to just extract this as its own commit that makes no functional changes.

Differential Revision: https://reviews.llvm.org/D117350

2 years ago[AMDGPU] Simplify AMDGPUAnnotateUniformValues::visitLoadInst
Jay Foad [Thu, 3 Feb 2022 15:27:12 +0000 (15:27 +0000)]
[AMDGPU] Simplify AMDGPUAnnotateUniformValues::visitLoadInst

Always set uniform metadata on the pointer if it is an instruction, but
otherwise do not bother to create a trivial getelementptr instruction,
because AMDGPUInstrInfo::isUniformMMO can already detect that various
non-instruction pointers are uniform.

Most of the test case churn is from tests that used undef as a pointer,
which AMDGPUInstrInfo::isUniformMMO treats as uniform.

Differential Revision: https://reviews.llvm.org/D118909

2 years ago[mlir][taco] Uses sparse_tensor.new to read tensor input data from files.
Bixia Zheng [Wed, 2 Feb 2022 16:40:33 +0000 (08:40 -0800)]
[mlir][taco] Uses sparse_tensor.new to read tensor input data from files.

Replace the Python implementation for reading tensor input data from files with
create_sparse_tensor that uses sparse_tensor.new.

The MLIR TNS format has two extra meta data lines. Add the extra meta data to a
test data file.

Implement TACO tensor methods evaluate and unpack.

Add unit tests.

Reviewed By: aartbik

Differential Revision: https://reviews.llvm.org/D118803

2 years ago[MLIR][SCF] Remove loop invariant arguments of scf.while
Abhishek Varma [Thu, 3 Feb 2022 16:09:51 +0000 (17:09 +0100)]
[MLIR][SCF] Remove loop invariant arguments of scf.while

-- This commit adds a canonicalization pattern on scf.while to remove
   the loop invariant arguments.
-- An argument is considered loop invariant if the iteration argument value is
   the same as the corresponding one being yielded (at the same position) in both
   the before/after block of scf.while.
-- For the arguments removed, their use within scf.while and their corresponding
   scf.while's result are replaced with their corresponding initial value.

Signed-off-by: Abhishek Varma <abhishek.varma@polymagelabs.com>
Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D116923

2 years ago[AMDGPU] Tweak tests in noclobber-barrier.ll
Jay Foad [Thu, 3 Feb 2022 16:02:39 +0000 (16:02 +0000)]
[AMDGPU] Tweak tests in noclobber-barrier.ll

Tweak some of the tests to demonstrate
AMDGPUAnnotateUniformValues::visitLoadInst inserting a trivial
getelementptr instruction, just to have somewhere to put amdgpu.uniform
metadata. NFC.

2 years ago[gn build] Port c34698a811b1
LLVM GN Syncbot [Thu, 3 Feb 2022 16:04:30 +0000 (16:04 +0000)]
[gn build] Port c34698a811b1

2 years agoMipsABIFlagsSection.h - replace unnecessary StringRef include with forward declaration
Simon Pilgrim [Thu, 3 Feb 2022 15:57:12 +0000 (15:57 +0000)]
MipsABIFlagsSection.h - replace unnecessary StringRef include with forward declaration

2 years ago[X86] simplifyX86varShift - use KnownBits.getMaxValue().ult() to check for out of...
Simon Pilgrim [Thu, 3 Feb 2022 15:55:55 +0000 (15:55 +0000)]
[X86] simplifyX86varShift - use KnownBits.getMaxValue().ult() to check for out of bounds shift amounts

This is easier to grok than MaskedValueIsZero for high bits.

2 years ago[gn build] (manually) port 20e05b9f0ebe (ClangPseudoTests)
Nico Weber [Thu, 3 Feb 2022 15:55:40 +0000 (10:55 -0500)]
[gn build] (manually) port 20e05b9f0ebe (ClangPseudoTests)

2 years ago[clang][driver][wasm] Remove unneeded default labels
Timm Bäder [Thu, 3 Feb 2022 15:52:07 +0000 (16:52 +0100)]
[clang][driver][wasm] Remove unneeded default labels

Fix build fallout from b5787a0c6cc4da47b7d7b218e23f780076ad2f5f

2 years ago[LV] Use VScaleForTuning to allow wider epilogue VFs.
Sander de Smalen [Thu, 3 Feb 2022 09:36:03 +0000 (09:36 +0000)]
[LV] Use VScaleForTuning to allow wider epilogue VFs.

When the main loop is e.g. VF=vscale x 1 and the epilogue VF cannot
be any smaller, the vectorizer should try to estimate how many lanes are
executed at runtime and allow a suitable fixed-width VF to be chosen. It
can use VScaleForTuning to figure out what a suitable fixed-width VF could
be. For the case where the main loop VF is VF=vscale x 1, and VScaleForTuning=8,
it could still choose an epilogue VF upto VF=4.

This was a bit tricky to test, so this patch also introduces a wrapper
function to get 'VScaleForTuning' by also considering vscale_range.
If min and max are equal, then that will be the vscale we compile for.
It makes little sense to tune for a different width if the code
will not be portable for other widths.

Reviewed By: david-arm

Differential Revision: https://reviews.llvm.org/D118709

2 years ago[clang][driver][wasm] Support -stdlib=libstdc++ for WebAssembly
Timm Bäder [Fri, 21 Jan 2022 10:15:23 +0000 (11:15 +0100)]
[clang][driver][wasm] Support -stdlib=libstdc++ for WebAssembly

The WebAssembly toolchain currently supports only -stdlib=libc++
and implicitly assumes the c++ stdlib to be libc++. Change this to also
support libstdc++.

Differential Revision: https://reviews.llvm.org/D117888#3290628

2 years agoRevert "[flang] Debugging of ACCESS='STREAM' I/O"
Andrzej Warzynski [Thu, 3 Feb 2022 15:15:53 +0000 (15:15 +0000)]
Revert "[flang] Debugging of ACCESS='STREAM' I/O"

This reverts commit be9946b877add0db906090d22840b213c3f41dd2.

This change has caused Flang's Windows buildbot to start failing:
* https://lab.llvm.org/buildbot/#/builders/172/builds/7664

2 years ago[Lanai] Remove orphan LanaiInstPrinter::printAluOperand declaration. NFCI.
Simon Pilgrim [Thu, 3 Feb 2022 14:48:38 +0000 (14:48 +0000)]
[Lanai] Remove orphan LanaiInstPrinter::printAluOperand declaration. NFCI.

2 years agoLanaiInstPrinter.h - replace unnecessary StringRef include with forward declaration
Simon Pilgrim [Thu, 3 Feb 2022 14:33:30 +0000 (14:33 +0000)]
LanaiInstPrinter.h - replace unnecessary StringRef include with forward declaration

2 years ago[SLP]Excluded external uses from the reordering estimation.
Alexey Bataev [Fri, 31 Dec 2021 17:31:24 +0000 (09:31 -0800)]
[SLP]Excluded external uses from the reordering estimation.

Compiler adds the estimation for the external uses during operands
reordering analysis, which makes it tend to prefer duplicates in the
lanes rather than diamond/shuffled match in the graph. It changes the sizes of
the vector operands and may prevent some vectorization. We don't need
this kind of estimation for the analysis phase, because we just need to
choose the most compatible instruction and it does not matter if it has
external user or used in the non-matching lane. Instead, we count the number
of unique instruction in the lane and see if the reassociation changes
the number of unique scalars to be power of 2 or not. If we have power
of 2 unique scalars in the lane, it is considered more profitable rather
than having non-power-of-2 number of unique scalars.

Metric: SLP.NumVectorInstructions

                          test-suite :: MultiSource/Benchmarks/FreeBench/distray/distray.test   70.00   86.00   22.9%
                             test-suite :: External/SPEC/CFP2017rate/544.nab_r/544.nab_r.test  346.00  353.00    2.0%
                            test-suite :: External/SPEC/CFP2017speed/644.nab_s/644.nab_s.test  346.00  353.00    2.0%
                         test-suite :: MultiSource/Benchmarks/mediabench/gsm/toast/toast.test  235.00  239.00    1.7%
                  test-suite :: MultiSource/Benchmarks/MiBench/telecomm-gsm/telecomm-gsm.test  235.00  239.00    1.7%
                     test-suite :: External/SPEC/CFP2017rate/526.blender_r/526.blender_r.test 8723.00 8834.00    1.3%
                                 test-suite :: MultiSource/Applications/JM/ldecod/ldecod.test 1051.00 1064.00    1.2%
                         test-suite :: External/SPEC/CINT2017speed/625.x264_s/625.x264_s.test 1628.00 1646.00    1.1%
                          test-suite :: External/SPEC/CINT2017rate/525.x264_r/525.x264_r.test 1628.00 1646.00    1.1%
                       test-suite :: External/SPEC/CFP2017rate/510.parest_r/510.parest_r.test 9100.00 9184.00    0.9%
                     test-suite :: External/SPEC/CFP2017rate/538.imagick_r/538.imagick_r.test 3565.00 3577.00    0.3%
                    test-suite :: External/SPEC/CFP2017speed/638.imagick_s/638.imagick_s.test 3565.00 3577.00    0.3%
                       test-suite :: External/SPEC/CFP2017rate/511.povray_r/511.povray_r.test 4235.00 4245.00    0.2%
                              test-suite :: MultiSource/Benchmarks/tramp3d-v4/tramp3d-v4.test 1996.00 1998.00    0.1%
                                 test-suite :: MultiSource/Applications/JM/lencod/lencod.test 1671.00 1672.00    0.1%

test-suite :: MultiSource/Benchmarks/Prolangs-C/TimberWolfMC/timberwolfmc.test  783.00  782.00   -0.1%
                      test-suite :: SingleSource/Benchmarks/Misc/oourafft.test   69.00   68.00   -1.4%
        test-suite :: External/SPEC/CINT2017speed/641.leela_s/641.leela_s.test  207.00  192.00   -7.2%
         test-suite :: External/SPEC/CINT2017rate/541.leela_r/541.leela_r.test  207.00  192.00   -7.2%
 test-suite :: External/SPEC/CINT2017rate/531.deepsjeng_r/531.deepsjeng_r.test   89.00   80.00  -10.1%
test-suite :: External/SPEC/CINT2017speed/631.deepsjeng_s/631.deepsjeng_s.test   89.00   80.00  -10.1%
       test-suite :: MultiSource/Benchmarks/mediabench/jpeg/jpeg-6a/cjpeg.test  260.00  215.00  -17.3%
 test-suite :: MultiSource/Benchmarks/MiBench/consumer-jpeg/consumer-jpeg.test  256.00  211.00  -17.6%

MultiSource/Benchmarks/Prolangs-C/TimberWolfMC - pretty the same.
SingleSource/Benchmarks/Misc/oourafft.test - 2 <2 x > loads replaced by
one <4 x> load.
External/SPEC/CINT2017speed/641.leela_s - function gets vectorized and
not inlined anymore.
External/SPEC/CINT2017rate/541.leela_r - same
xternal/SPEC/CINT2017rate/531.deepsjeng_r - changed the order in
multi-block tree, the result is pretty the same.
External/SPEC/CINT2017speed/631.deepsjeng_s - same.
MultiSource/Benchmarks/mediabench/jpeg/jpeg-6a - the result is the same
as before.
MultiSource/Benchmarks/MiBench/consumer-jpeg - same.

Differential Revision: https://reviews.llvm.org/D116688

2 years ago[NFC] Move FoldingSetNodeID::AddInteger and FoldingSetNodeID::AddPointer definitions...
Dawid Jurczak [Mon, 31 Jan 2022 14:51:13 +0000 (15:51 +0100)]
[NFC] Move FoldingSetNodeID::AddInteger and FoldingSetNodeID::AddPointer definitions to header

Lack of AddInteger/AddPointer inlining slows down NodeEquals/Profile/:operator== calls.
Inlining makes FunctionProtoTypes/PointerTypes/ElaboratedTypes/ParenTypes Profile functions faster
but since NodeEquals is still called indirectly through function pointer from FindNodeOrInsertPos
there is room for further inlining improvements.

Extracted from: https://reviews.llvm.org/D118385

Differential Revision: https://reviews.llvm.org/D118610

2 years agoXCoreTargetMachine.h - replace unnecessary StringRef include with forward declaration
Simon Pilgrim [Thu, 3 Feb 2022 14:21:22 +0000 (14:21 +0000)]
XCoreTargetMachine.h - replace unnecessary StringRef include with forward declaration

2 years agoXCoreInstPrinter.h - replace unnecessary StringRef include with forward declaration
Simon Pilgrim [Thu, 3 Feb 2022 14:05:53 +0000 (14:05 +0000)]
XCoreInstPrinter.h - replace unnecessary StringRef include with forward declaration

2 years ago[XCore] Remove orphan XCoreInstPrinter::printMemOperand declaration. NFCI.
Simon Pilgrim [Thu, 3 Feb 2022 13:55:15 +0000 (13:55 +0000)]
[XCore] Remove orphan XCoreInstPrinter::printMemOperand declaration. NFCI.

2 years ago[SLP]Alternate vectorization for cmp instructions.
Alexey Bataev [Thu, 16 Dec 2021 16:55:52 +0000 (08:55 -0800)]
[SLP]Alternate vectorization for cmp instructions.

Added support for alternate ops vectorization of the cmp instructions.
It allows to vectorize either cmp instructions with same/swapped
predicate but different (swapped) operands kinds or cmp instructions
with different predicates and compatible operands kinds.

Differential Revision: https://reviews.llvm.org/D115955

2 years ago[clang][docs] Regenerate ASTMatchers documentation
Nathan James [Thu, 3 Feb 2022 14:11:30 +0000 (14:11 +0000)]
[clang][docs] Regenerate ASTMatchers documentation

2 years ago[mlir][Rewrite] Add support for using an operation with no results as location
Markus Böck [Thu, 3 Feb 2022 14:07:46 +0000 (15:07 +0100)]
[mlir][Rewrite] Add support for using an operation with no results as location

Prior to this patch, using an operation without any results as the location would result in the generation of invalid C++ code. It'd try to format using the result values, which would would end up being an empty string for an operation without any.
This patch fixes that issue by instead using getValueAndRangeUse which handles both ranges as well as the case for an op without any results.

Differential Revision: https://reviews.llvm.org/D118885

2 years ago[fir] Add fir.array_amend operation definition
Valentin Clement [Thu, 3 Feb 2022 14:03:58 +0000 (15:03 +0100)]
[fir] Add fir.array_amend operation definition

This patch adds the fir.array_amend operation. this op
is used later in upstreaming patches for the F95 compliance.

The `array_amend` operation marks an array value as having been changed via
a reference obtain by an `array_access`. It acts as a logical transaction
log that is used to merge the final result back with an `array_merge_store`
operation.

 ```mlir
  // fetch the value of one of the array value's elements
  %1 = fir.array_access %v, %i, %j : (!fir.array<?x?xT>, index, index) -> !fir.ref<T>
  // modify the element by storing data using %1 as a reference
  %2 = ... %1 ...
  // mark the array value
  %new_v = fir.array_amend %v, %2 : (!fir.array<?x?xT>, !fir.ref<T>) -> !fir.array<?x?xT>
```

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: kiranchandramohan, schweitz

Differential Revision: https://reviews.llvm.org/D112448

Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
2 years ago[flang] Remove ununsed variable in ScalarExprLowering
Valentin Clement [Thu, 3 Feb 2022 14:01:37 +0000 (06:01 -0800)]
[flang] Remove ununsed variable in ScalarExprLowering

Fix buildbot failure https://lab.llvm.org/buildbot/#/builders/180/builds/3066

2 years ago[NFC] TypePromotion test for AArch64
Sam Parker [Thu, 3 Feb 2022 13:44:52 +0000 (13:44 +0000)]
[NFC] TypePromotion test for AArch64

2 years ago[lldb] Rename Logging.h to LLDBLog.h and clean up includes
Pavel Labath [Thu, 3 Feb 2022 12:26:10 +0000 (13:26 +0100)]
[lldb] Rename Logging.h to LLDBLog.h and clean up includes

Most of our code was including Log.h even though that is not where the
"lldb" log channel is defined (Log.h defines the generic logging
infrastructure). This worked because Log.h included Logging.h, even
though it should.

After the recent refactor, it became impossible the two files include
each other in this direction (the opposite inclusion is needed), so this
patch removes the workaround that was put in place and cleans up all
files to include the right thing. It also renames the file to LLDBLog to
better reflect its purpose.

2 years ago[AArch64][SVE] Fold vselect into predicated fmul, fsub and fadd
Matt Devereau [Wed, 19 Jan 2022 16:30:29 +0000 (16:30 +0000)]
[AArch64][SVE] Fold vselect into predicated fmul, fsub and fadd

Fold vselect with an unpredicated fmul/fsub/fadd
operand into a predicated fmul/fsub/fadd:

(vselect (p) (op (a) (b)) (a)) => (op -> (p) (a) (b))

Differential Revision: https://reviews.llvm.org/D117689

2 years ago[clangd] IncludeCleaner: Decrease API dependency on clangd
Kirill Bobyrev [Thu, 3 Feb 2022 13:40:42 +0000 (14:40 +0100)]
[clangd] IncludeCleaner: Decrease API dependency on clangd

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D118882

2 years ago[RISCV] Add support for Zihintpause extention
Shao-Ce SUN [Thu, 20 Jan 2022 15:49:55 +0000 (23:49 +0800)]
[RISCV] Add support for Zihintpause extention

Add support for the 'pause' hint instruction as an alias for
'fence w, 0'. To do this allow the 'fence' operands pred and succ
to be set to 0 (the empty set). This will also allow future hints
to be encoded as 'fence 0, <x>' and 'fence <x>, 0'.

This patch revised from @mundaym's D93019.

Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D117789

2 years ago[AArch64] Adjust machine-combiner-reassociate.mir test
John Brawn [Thu, 3 Feb 2022 12:38:54 +0000 (12:38 +0000)]
[AArch64] Adjust machine-combiner-reassociate.mir test

Use regular expressions for instruction numbers, as these can vary.

2 years ago[clang-format] Add missing newline in -style help
Sven van Haastregt [Thu, 3 Feb 2022 12:12:29 +0000 (12:12 +0000)]
[clang-format] Add missing newline in -style help

2 years agoModuleUtils - VFABI::setVectorVariantNames - use ArrayRef<> instead of const SmallVec...
Simon Pilgrim [Thu, 3 Feb 2022 12:09:44 +0000 (12:09 +0000)]
ModuleUtils - VFABI::setVectorVariantNames - use ArrayRef<> instead of const SmallVector to pass argument

2 years ago[clangd][nfc] cleanup of remaining clang-tidy findings
Christian Kühnel [Tue, 1 Feb 2022 13:45:59 +0000 (13:45 +0000)]
[clangd][nfc] cleanup of remaining clang-tidy findings

There were some left-overs (or new things) from the previous patches.

This will get us down to 0 open findings except:
clang-tidy is complaining in some files about
`warning: #includes are not sorted properly [llvm-include-order]`
however, clang-format does revert these changes.
It looks like clang-tidy and clang-format disagree there.

Not sure how we can fix that...

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D118698

2 years ago[AArch64] Make machine combiner patterns preserve MIFlags
John Brawn [Mon, 31 Jan 2022 15:13:34 +0000 (15:13 +0000)]
[AArch64] Make machine combiner patterns preserve MIFlags

This is mainly done so that we don't lose the nofpexcept flag once we
start emitting it.

Differential Revision: https://reviews.llvm.org/D118621

2 years ago[clangd] NFC, remove an unused local varaiable.
Haojian Wu [Thu, 3 Feb 2022 11:42:52 +0000 (12:42 +0100)]
[clangd] NFC, remove an unused local varaiable.

2 years ago[llvm-ar] Prevent automatic conversion from thin to full archive
gbreynoo [Thu, 3 Feb 2022 11:33:49 +0000 (11:33 +0000)]
[llvm-ar] Prevent automatic conversion from thin to full archive

llvm-ar silently converts a thin archive to a regular archive when you
specify a modification operation (e.g. 'r') without the 'T' modifier.
This change stops this from occuring. If a user is trying to convert
between thin and full archives then they can explicitly use the 'L'
command to createa new archive.

Differential Revision: https://reviews.llvm.org/D118693

2 years ago[mlir][vector] Sink StandardOps include to its user in VectorUtils
Benjamin Kramer [Thu, 3 Feb 2022 11:34:07 +0000 (12:34 +0100)]
[mlir][vector] Sink StandardOps include to its user in VectorUtils

2 years ago[RS4GC] Regenerate test checks (NFC)
Nikita Popov [Thu, 3 Feb 2022 11:25:05 +0000 (12:25 +0100)]
[RS4GC] Regenerate test checks (NFC)

2 years ago[OpenCL] Move most _explicit atomics into multiclass; NFC
Sven van Haastregt [Thu, 3 Feb 2022 11:09:41 +0000 (11:09 +0000)]
[OpenCL] Move most _explicit atomics into multiclass; NFC

This will simplify future conditionalization for OpenCL 3.0
optionality of atomic features.

The only set of atomic functions not using the multiclass is
atomic_compare_exchange_strong/weak, as these don't fit the common
pattern due to having 2 MemoryOrder arguments.

2 years ago[ConstraintElimination] Handle degenerate case with branch to same dest.
Florian Hahn [Thu, 3 Feb 2022 11:09:14 +0000 (11:09 +0000)]
[ConstraintElimination] Handle degenerate case with branch to same dest.

When a conditional branch has the same block as both true and false
successor it is not safe to add the condition.

Fixes PR49819.

2 years ago[ConstraintElimination] Add test cases from PR49819.
Florian Hahn [Thu, 3 Feb 2022 11:09:10 +0000 (11:09 +0000)]
[ConstraintElimination] Add test cases from PR49819.

2 years ago[AArch64] Reassociate integer extending reductions to pairwise addition.
David Green [Thu, 3 Feb 2022 11:05:48 +0000 (11:05 +0000)]
[AArch64] Reassociate integer extending reductions to pairwise addition.

Given an (integer) vecreduce, we know the order of the inputs does not matter.
We can convert UADDV(add(zext(extract_lo(x)), zext(extract_hi(x)))) into
UADDV(UADDLP(x)). This can also happen through an extra add, where we transform
UADDV(add(y, add(zext(extract_lo(x)), zext(extract_hi(x))))).

This makes sure the same thing happens signed cases too, which requires adding
a new SADDLP node.

Differential Revision: https://reviews.llvm.org/D118107

2 years ago[clang-format] Revert a feature in RemoveBracesLLVM
Owen Pan [Thu, 3 Feb 2022 05:52:14 +0000 (21:52 -0800)]
[clang-format] Revert a feature in RemoveBracesLLVM

Revert the handling of a single-statement block that gets wrapped.

See issue #53543.

Differential Revision: https://reviews.llvm.org/D118873

2 years ago[compiler-rt][lsan] Increase libdl_deadlock test timeout
David Spickett [Thu, 3 Feb 2022 10:52:02 +0000 (10:52 +0000)]
[compiler-rt][lsan] Increase libdl_deadlock test timeout

We (Linaro) still have the occasional failure here due
to high load on a shared buildbot machine.

We are looking into general soloutions but perhaps this
will help in the meantime.

2 years ago[mlir][NFC] Fully qualify a default C++ string in Pattern.cpp
Markus Böck [Thu, 3 Feb 2022 10:50:26 +0000 (11:50 +0100)]
[mlir][NFC] Fully qualify a default C++ string in Pattern.cpp

2 years ago[fir] Add fir.array_access op
Valentin Clement [Thu, 3 Feb 2022 10:41:04 +0000 (11:41 +0100)]
[fir] Add fir.array_access op

The `array_access` provides a reference to a single element from an array
value. This is *not* a view in the immutable array, otherwise it couldn't
be stored to. It can be see as a logical copy of the element and its
position in the array. This reference can be written to and modified without
changing the original array.

The `array_access` operation is used to fetch the memory reference of an
element in an array value.

```fortran
      real :: a(n,m)
      ...
      ... a ...
      ... a(r,s+1) ...
```

One can use `fir.array_access` to recover the implied memory reference to
the element `a(i,j)` in an array expression `a` as shown above. It can also
be used to recover the reference element `a(r,s+1)` in the second
expression.

```mlir
      %s = fir.shape %n, %m : (index, index) -> !fir.shape<2>
      // load the entire array 'a'
      %v = fir.array_load %a(%s) : (!fir.ref<!fir.array<?x?xf32>>, !fir.shape<2>) -> !fir.array<?x?xf32>
      // fetch the value of one of the array value's elements
      %1 = fir.array_access %v, %i, %j : (!fir.array<?x?xf32>, index, index) -> !fir.ref<f32>
```

More information about `array_access` and other array operations can be
found in flang/docs/FIRArrayOperations.md.

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: kiranchandramohan, schweitz

Differential Revision: https://reviews.llvm.org/D112445

Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
2 years ago[flang] Lower integer constant code for STOP stmt
Valentin Clement [Thu, 3 Feb 2022 10:30:50 +0000 (11:30 +0100)]
[flang] Lower integer constant code for STOP stmt

This patch lower the integer constant code in the STOP statement.

The code is lowered to `arith.constant`.

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: schweitz, kiranchandramohan

Differential Revision: https://reviews.llvm.org/D118787

2 years ago[syntax][pseudo] Add Grammar for the clang pseudo-parser
Haojian Wu [Wed, 19 Jan 2022 12:14:57 +0000 (13:14 +0100)]
[syntax][pseudo] Add Grammar for the clang pseudo-parser

This patch introduces the Grammar class, which is a critial piece for constructing
a tabled-based parser.

As the first patch, the scope is limited to:
  - define base types (symbol, rules) of modeling the grammar
  - construct Grammar by parsing the BNF file (annotations are excluded for now)

Differential Revision: https://reviews.llvm.org/D114790

2 years ago[flang] Add lowering for integer constant
Valentin Clement [Thu, 3 Feb 2022 09:40:19 +0000 (10:40 +0100)]
[flang] Add lowering for integer constant

This patch enables the lowering of integer constant.

The `ScalarExprLowering` class is introduced in `ConvertExpr.cpp` to help
the lowering of expression. This patch adds all the placeholder as well for future
expression lowering with the appropriate TODOs.

Integer constant expression are lowered to `arith.constant` with an integer type corresponding to the kind value.

This patch is in support of D118787

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: schweitz, kiranchandramohan

Differential Revision: https://reviews.llvm.org/D118786

2 years ago[clang][Hexagon] Match -lc option more specifically in toolchain test
David Spickett [Thu, 3 Feb 2022 09:56:17 +0000 (09:56 +0000)]
[clang][Hexagon] Match -lc option more specifically in toolchain test

In https://lab.llvm.org/buildbot/#/builders/185/builds/1341
our bot happened to generate a temporary file path with -lc in
it.

Match with "" around the options so this doesn't happen again.

2 years ago[VE] Packed v512i32 isel and tests
Simon Moll [Thu, 3 Feb 2022 10:01:42 +0000 (11:01 +0100)]
[VE] Packed v512i32 isel and tests

Reviewed By: kaz7

Differential Revision: https://reviews.llvm.org/D118332

2 years ago[ConstantFolding] Fold constrained compare intrinsics
Serge Pavlov [Thu, 3 Feb 2022 07:10:51 +0000 (14:10 +0700)]
[ConstantFolding] Fold constrained compare intrinsics

The change implements constant folding of ‘llvm.experimental.constrained.fcmp’
and ‘llvm.experimental.constrained.fcmps’ intrinsics.

Differential Revision: https://reviews.llvm.org/D110322

2 years agoRevert "[compiler-rt][Darwin] Add arm64 to simulator platforms"
Tim Northover [Thu, 3 Feb 2022 09:41:50 +0000 (09:41 +0000)]
Revert "[compiler-rt][Darwin] Add arm64 to simulator platforms"

This reverts commit a8e5ce76b475a22546090a73c22fa4f83529aa4e.

It looks like older Xcodes' headers don't allow arm64 builds so it was causing
CI failures.

2 years ago[clang-format] Reserve vectors when the number of items is known beforehand. NFC.
Marek Kurdej [Thu, 3 Feb 2022 09:37:58 +0000 (10:37 +0100)]
[clang-format] Reserve vectors when the number of items is known beforehand. NFC.

2 years agoRevert "[SimplifyCFG] Start redesigning `FoldTwoEntryPHINode()`."
Roman Lebedev [Thu, 3 Feb 2022 09:22:43 +0000 (12:22 +0300)]
Revert "[SimplifyCFG] Start redesigning `FoldTwoEntryPHINode()`."

Unfortunately, it seems we really do need to take the long route;
start from the "merge" block, find (all the) "dispatch" blocks,
and deal with each "dispatch" block separately, instead of simply
starting from each "dispatch" block like it would logically make sense,
otherwise we run into a number of other missing folds around
`switch` formation, missing sinking/hoisting and phase ordering.

This reverts commit 85628ce75b3084dc0f185a320152baf85b59aba7.
This reverts commit c5fff9095342a792bf4b9a077fe3c3a83c4e566c.
This reverts commit 34a98e1046e3aa55e5f26ab20a15e96b4034d25a.
This reverts commit 1e353f092288309d74d380367aa50bbd383780ed.