Try to simplify BranchOnCount to `BranchOnCond true` if TC <= UF * VF.

This is an alternative to D121899 which simplifies the VPlan directly
instead of doing so late in code-gen.

The potential benefit of doing this in VPlan is that this may help
cost-modeling in the future. The reason this is done in prepareToExecute
at the moment is that a single plan may be used for multiple VFs/UFs.

There are further simplifications that can be applied as follow ups:

1. Replace inductions with constants
2. Replace vector region with regular block.

Fixes #55354.

Depends on D126679.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D126680

This reverts commit d4220af5.

Linaro bots are back online.

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D125083

The default RegisterClass is not enough to model RISCV Register.
We define risc-v's own register class to model FP Register.
This helps to better estimate the register pressure in the loop-vectorize.

Reviewed By: kito-cheng

Differential Revision: https://reviews.llvm.org/D126854

Fixes https://github.com/clangd/clangd/issues/1132
where clangd's semantic highlighting is missing for symbols of a template
specialization definition. It turns out the visitor didn't traverse the
base classes of Class/Var##TemplateSpecializationDecl, i.e.
CXXRecordDecl/VarDecl. This patch adds them back as what is done in
DEF_TRAVERSE_TMPL_PART_SPEC_DECL.

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D126757

- truncateQuotedNameFront: The last use was removed on Jul 10, 2017 in
  commit a9d944fd.

- truncateQuotedNameBack: The last use was removed on Mar 26, 2018 in
  commit 7b84b678.

- truncateStringMiddle: The last use was removed on Mar 26, 2018 in
  commit 7b84b678.

- truncateStringBack: The last use is in truncateQuotedNameBack being
  removed above.

- truncateStringFront: The last use is in truncateQuotedNameFront
  being removed above.

promise_type

Address the post-commit comment in
https://reviews.llvm.org/D125517#inline-1217244

This patch adds an llvm-driver multicall tool that can combine multiple
LLVM-based tools. The build infrastructure is enabled for a tool by
adding the GENERATE_DRIVER option to the add_llvm_executable CMake
call, and changing the tool's main function to a canonicalized
tool_name_main format (i.e. llvm_ar_main, clang_main, etc...).

As currently implemented llvm-driver contains dsymutil, llvm-ar,
llvm-cxxfilt, llvm-objcopy, and clang (if clang is included in the
build).

llvm-driver can be enabled from builds by setting
LLVM_TOOL_LLVM_DRIVER_BUILD=On.

There are several limitations in the current implementation, which can
be addressed in subsequent patches:

(1) the multicall binary cannot currently properly handle
multi-dispatch tools. This means symlinking llvm-ranlib to llvm-driver
will not properly result in llvm-ar's main being called.
(2) the multicall binary cannot be comprised of tools containing
conflicting cl::opt options as the global cl::opt option list cannot
contain duplicates.

These limitations can be addressed in subsequent patches.

Differential revision: https://reviews.llvm.org/D109977

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D123845

The last use was removed on Mar 7, 2022 in commit
294eca35.

This patch replaces some llvm::find with llvm::is_contained, it should be more clear.

Differential Revision: https://reviews.llvm.org/D127077

The last use was removed on Dec 23, 2021 in commit
29f88b93.

The last use was removed on Jun 27, 2019 in commit
81389961.

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D126439

We are lacking builtins support for `_Float16`. In most cases, we can use other floating-type builtins and truncate them to `_Float16`.
But it's a problem to SNaN, e.g., https://gcc.godbolt.org/z/cqr5nG1jh
This patch adds `__builtin_nansf16` support as well as other 3 ones since they are usually used together.

Reviewed By: LuoYuanke

Differential Revision: https://reviews.llvm.org/D127050

https://alive2.llvm.org/ce/z/o7rQ5q

This shows an extra instruction in some cases, but that is
caused by an existing canonicalization of trunc -> and+icmp.

Codegen should be better for any target where a multiply is
more costly than the most simple ALU op.

This ends up producing the requested x86 asm from issue #55618,
but it's not the same IR. We are missing a canonicalization
from the negate+mask pattern to the trunc+select created here.

issue #55838

Similar to 98067998

Fixes #55853.

Differential Revision: https://reviews.llvm.org/D127054

The directive name is not useful because the next line replicates the error line
which includes the directive. The prevailing style uses "expected newline".

Reviewed By: thakis
Differential Revision: https://reviews.llvm.org/D123640

The directive name is not useful because the next line replicates the error line
which includes the directive. The prevailing style uses "expected newline".

Differential Revision: https://reviews.llvm.org/D127068

The `ranges.transform.pass.cpp` often times out on CI for AIX (32-bit and 64-bit)
only. Mark the test as `UNSUPPORTED` for `AIX` for now. It should be looked into in
the future.

Differential Revision: https://reviews.llvm.org/D127051

When building in debug mode, the link time of the standalone sample is excessive, taking upwards of a minute if using BFD. This at least allows lld to be used if the main invocation was configured that way. On my machine, this gets a standalone test that requires a relink to run in ~13s for Debug mode. This is still a lot, but better than it was. I think we may want to do something about this test: it adds a lot of latency to a normal compile/test cycle and requires a bunch of arg fiddling to exclude.

I think we may end up wanting a `check-mlir-heavy` target that can be used just prior to submit, and then make `check-mlir` just run unit/lite tests. More just thoughts for the future (none of that is done here).

Reviewed By: bondhugula, mehdi_amini

Differential Revision: https://reviews.llvm.org/D126585

This patch fixes:

  llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp:910:5: error:
  default label in switch which covers all enumeration values
  [-Werror,-Wcovered-switch-default]

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>

Differential Revision: https://reviews.llvm.org/D127074

This patch is extraction from the https://reviews.llvm.org/D126883.
It removes DwarfStringPoolEntryRef::isIndexed() and isIndexed bit
since they are not used.

Differential Revision: https://reviews.llvm.org/D126958

This patch introduces support for %hix, %lox, %gdop_hix22, %gdop_lox10 and %gdop.

An extra test is introduced to make sure the fixups are correctly applied.

Reviewed By: dcederman

Differential Revision: https://reviews.llvm.org/D102575

On targets with __float128 available and distinct from long double,
use it to support more kind=16 entry points.  This affects mostly
x86-64 targets.  This means that more runtime entry points are
defined for lowering to call.

Delete Common/long-double.h and its LONG_DOUBLE macro in favor of
testing the standard macro LDBL_MANT_DIG.

Differential Revision: https://reviews.llvm.org/D127025

The last use was removed on Feb 18, 2022 in commit
00ab91b7.