This will allow linking in the callbacks directly instead of using PLT.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D116182

Reviewed By: #libc, Quuxplusone, Mordante

Differential Revision: https://reviews.llvm.org/D116175

-0.0 requires a constant pool. +0.0 can be made with vmv.v.x x0.

Not doing this in getNeutralElement for fear of changing other targets.

Differential Revision: https://reviews.llvm.org/D115978

During the review of D115991 @vitaut pointed out the enum shouldn't
depend on whether or not _LIBCPP_HAS_NO_INT128 is defined. The current
implementation lets the enum's ABI depend on this configuration option
without a good cause.

Reviewed By: ldionne, #libc

Differential Revision: https://reviews.llvm.org/D116120

This adds support for strict conversions between fp types and between
integer and fp.

NOTE: RISCV has static rounding mode instructions, but the constrainted
intrinsic metadata is not used to select static rounding modes. Dynamic
rounding mode is always used.

Differential Revision: https://reviews.llvm.org/D115997

Converts concat_vectors(Vd, trunc(smin(smax Vm, -2^n), 2^n-1) to
sqxtn2(Vd, Vm). Deliberately not handling v2i64 ~> v2i32 as the
min/max nodes are not legal (same thing we did for the SQXTN
patterns in https://reviews.llvm.org/D103263).

Differential Revision: https://reviews.llvm.org/D116105

Delete inst-select-insert.xfail.mir.
G_INSERT instructions in inst-select-insert.xfail.mir are no longer
legal after D114198. This breaks build bots, since builds with
LLVM_ENABLE_ASSERTIONS=Off don't check for legality and report cannot
select while build with LLVM_ENABLE_ASSERTIONS=On reports instruction
is not legal.

This patch adds a toolchain (TC) for SPIR-V along with the
following changes in Driver and base ToolChain and Tool.
This is required to provide a mechanism in clang to bypass
SPIR-V backend in LLVM for SPIR-V until it lands in LLVM and
matures.

The SPIR-V code is generated by the SPIRV-LLVM translator tool
named 'llvm-spirv' that is sought in 'PATH'.

The compilation phases/actions should be bound for SPIR-V in
the meantime as following:

    compile -> tools::Clang
    backend -> tools::SPIRV::Translator
    assemble -> tools::SPIRV::Translator

However, Driver’s ToolSelector collapses compile-backend-assemble
and compile-backend sequences to tools::Clang. To prevent this,
added new {use,has}IntegratedBackend properties in ToolChain and
Tool to which the ToolSelector reacts on, and which SPIR-V TC
overrides.

Linking of multiple input files is currently not supported but
can be added separately.

Differential Revision: https://reviews.llvm.org/D112410



Co-authored-by: Henry Linjamäki <henry.linjamaki@parmance.com>

Fix issue in TargetLowering::expandROT where we only attempt to flip a rotation if the other direction has better support - this matches TargetLowering::expandFunnelShift

This allows us to enable ISD::ROTR lowering on SSE targets, which particularly simplifies/improves codegen for splat amount and AVX2 per-element shifts.

Adding following fold opportunity:
((A | B) ^ A) & ((A | B) ^ B) --> 0

Reviewed By: spatel, rampitec

Differential Revision: https://reviews.llvm.org/D115755

The loop vectorizer can interleave scalar loops even if it doesn't
vectorize them. I don't believe we intended to enable this when
we enabled interleaving for vector instructions.

Disable interleaving for VF=1 like X86 and AMDGPU already do. Test
lifted from AMDGPU.

Differential Revision: https://reviews.llvm.org/D115975

[X86] isVectorShiftByScalarCheap - vXi8 select(shift(x,splat0),shift(x,splat1)) is better than shift(x,select(splat0,splat1))

Even though we don't have vXi8 vector shifts (apart from XOP), it is still better to prefer shift (or funnel-shift/rotate) by scalar where possible.

https://llvm.godbolt.org/z/6ss6ffTxv

Differential Revision: https://reviews.llvm.org/D116191

This was casting the address to its own element type, which is
a no-op.

This does exactly what this code manually implemented.

Add an overload for an Address and a single non-constant offset.
This makes it easier to preserve the element type and adjust the
alignment appropriately.

Artifact combiner is not able to access individual elements after using
LCMTy style merge/unmerge, extract and insert to change vector number of
elements (pad with undef or split to sub-vector instructions).
Use unmerge to individual elements instead and then merge elements into
requested types.
Change argument lowering for vectors and moreElementsVector to use
buildPadVectorWithUndefElements and buildDeleteTrailingVectorElements.
FewerElementsVector had a few helpers that had different behavior,
introduce new helper for most of the opcodes.
FewerElementsVector helper is more flexible since it can create leftover
instruction smaller then requested type (useful in case target wants to
avoid pad with undef and use fewer registers). If target does not want
leftover of different type it should call more elements first.
Some helpers were performing more elements first to have split without
leftover. Opcodes that used this helper use clampMaxNumElementsStrict
(does more elements first) in LegalizerInfo to avoid test changes.
Fixes failures caused by failing to combine artifacts created during
more/fewer elements vector.

Differential Revision: https://reviews.llvm.org/D114198

Precommit for D114198 (Rework more/fewer elements for vectors).
Regenerate auto-generated mir tests for vectors (use CHECK-NEXT instead
of CHECK). Remove -global-isel-abort=0 where it is no longer needed.
Add mir tests for different AMDGPU sub-targets and they way they lower
function vector arguments (tests for legalization artifact combiner).

Reference VE manual and documentations in CompilerWriterInfo.

Reviewed By: kaz7

Differential Revision: https://reviews.llvm.org/D116212

In C++20 Modules, imported module which doesn't get exported wouldn't be
recorded. This patch would record such modules to avoid possible
incorrect visibility problems.

Reviewed By: urnathan

Differential Revision: https://reviews.llvm.org/D116098

Add VE assembly scrubbing and triple support to update_llc_test_checks.

Reviewed By: kaz7

Differential Revision: https://reviews.llvm.org/D116104

This reverts commit 368318bc.

The title is not right. It should be a patch about modules instead of
coroutines.

In C++20 Modules, imported module which doesn't get exported wouldn't be
recorded. This patch would record such modules to avoid possible
incorrect visibility problems.

Reviewed By: urnathan

Differential Revision: https://reviews.llvm.org/D116098

Remove unused headers from `<filesystem>`

Reviewed By: Quuxplusone, #libc, Mordante

Spies: Mordante, libcxx-commits

Differential Revision: https://reviews.llvm.org/D116146

sret is special in that it does not use the memory type
representation. Manually construct the LValue using ConvertType
instead of ConvertTypeForMem here.

This fixes matrix-lowering-opt-levels.c on s390x.

Add headers in `<filesystem>` tests that were transitively included
through `<filesystem>`

Reviewed as part of D116146

This reverts commit 352945dd.

This required fixing two places that were passing the pointer type
rather than the expected pointee type to the method.

This may cost 1.3+% of total link time.

Related to D45368 but outSecOff is unneeded because resolveShfLinkOrder uses
stable_sort.

Revert "Revert "[DwarfDebug] Support emitting function-local declaration for a lexical block" & dependent patches"

This has broke following LLDB buildbots:

https://lab.llvm.org/buildbot/#/builders/17/builds/14984
https://lab.llvm.org/buildbot/#/builders/96/builds/15928
https://lab.llvm.org/buildbot/#/builders/68/builds/23600

This reverts commit 62a6b9e9.

These intrinsics do not free, synchronize or diverge.

Based on my reading of https://llvm.org/docs/LangRef.html#llvm-init-trampoline-intrinsic,
init.trampoline writes to the first argument, while the other two
are readnone. These two arguments are only captured and written
into the trampoline memory. This also matches what I see in the
X86TargetLowering::LowerINIT_TRAMPOLINE() implementation.

Differential Revision: https://reviews.llvm.org/D116149

MakeNaturalAlignAddrLValue() expects the pointee type, but the
pointer type was passed. As a result, the natural alignment of
the pointer (usually 8) was always used in place of the natural
alignment of the value type.

Differential Revision: https://reviews.llvm.org/D116171

Mangled names are not meaningful for variables with local storage,
and may not be well defined (getting the mangled name for VLA
crashes the mangler). As such, do not include them in the JSON
dump.

This allows running update_cc_test_checks on some OpenMP tests again.

Fixes https://github.com/llvm/llvm-project/issues/49111.

Differential Revision: https://reviews.llvm.org/D116169

This reverts commit e48b1c8a.
This reverts commit d019de23.

The changes caused memory leaks (non-final classes cannot use unique_ptr).