Changes

[mlir][sparse] add support for std unary operations

Adds zero-preserving unary operators from std. Also adds xor.
Performs minor refactoring to remove "zero" node, and pushed
the irregular logic for negi (not support in std) into one place.

Reviewed By: gussmith23

Differential Revision: https://reviews.llvm.org/D105928

[mlir][Tensor] Implement `reifyReturnTypeShapesPerResultDim` for `tensor.insert_slice`.

Differential Revision: https://reviews.llvm.org/D105852

[PowerPC] Add PowerPC compare and multiply related builtins and instrinsics for XL compatibility

This patch is in a series of patches to provide builtins for compatibility
with the XL compiler. This patch adds the builtins and instrisics for compare
and multiply related operations.

Reviewed By: nemanjai, #powerpc

Differential revision: https://reviews.llvm.org/D102875

[NFC][MLIR][std] Clean up ArithmeticCastOps

The documentation on these was out of sync with the implementation. Also
the declaration of inputs was repeated when it is already part of the
ArithmeticCastOp definition.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D105934

[NFC][sanitizer] Rename some MemoryMapper members

Part of D105778

[NFC][sanitizer] Exctract DrainHalfMax

Part of D105778

[ScalarEvolution] Make isKnownNonZero handle more cases.

Using an unsigned range instead of signed ranges is a bit more precise.

Differential Revision: https://reviews.llvm.org/D105941

RegAlloc: Allow targets to split register allocation

AMDGPU normally spills SGPRs to VGPRs. Previously, since all register
classes are handled at the same time, this was problematic. We don't
know ahead of time how many registers will be needed to be reserved to
handle the spilling. If no VGPRs were left for spilling, we would have
to try to spill to memory. If the spilled SGPRs were required for exec
mask manipulation, it is highly problematic because the lanes active
at the point of spill are not necessarily the same as at the restore
point.

Avoid this problem by fully allocating SGPRs in a separate regalloc
run from VGPRs. This way we know the exact number of VGPRs needed, and
can reserve them for a second run.  This fixes the most serious
issues, but it is still possible using inline asm to make all VGPRs
unavailable. Start erroring in the case where we ever would require
memory for an SGPR spill.

This is implemented by giving each regalloc pass a callback which
reports if a register class should be handled or not. A few passes
need some small changes to deal with leftover virtual registers.

In the AMDGPU implementation, a new pass is introduced to take the
place of PrologEpilogInserter for SGPR spills emitted during the first
run.

One disadvantage of this is currently StackSlotColoring is no longer
used for SGPR spills. It would need to be run again, which will
require more work.

Error if the standard -regalloc option is used. Introduce new separate
-sgpr-regalloc and -vgpr-regalloc flags, so the two runs can be
controlled individually. PBQB is not currently supported, so this also
prevents using the unhandled allocator.

[NFC][sanitizer] Don't store region_base_ in MemoryMapper

Part of D105778

[NewPM][SimpleLoopUnswitch] Add option to not trivially unswitch

To help with debugging non-trivial unswitching issues.

Don't care about the legacy pass, nobody is using it.

If a pass's string params are empty (e.g. "simple-loop-unswitch"), don't
default to the empty constructor for the pass params. We should still
let the parser take care of it in case the parser has its own defaults.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D105933

sanitizer_common: optimize memory drain

Currently we allocate MemoryMapper per size class.
MemoryMapper mmap's and munmap's internal buffer.
This results in 50 mmap/munmap calls under the global
allocator mutex. Reuse MemoryMapper and the buffer
for all size classes. This radically reduces number of
mmap/munmap calls. Smaller size classes tend to have
more objects allocated, so it's highly likely that
the buffer allocated for the first size class will
be enough for all subsequent size classes.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D105778

AMDGPU: Try to fix test failure with EXPENSIVE_CHECKS

The machine verifier is enabled by default for EXPENSIVE_CHECKS, so
the pass runs of it would pollute the output here.

[NFC][sanitizer] Move MemoryMapper template parameter

[NFC][sanitizer] Simplify MapPackedCounterArrayBuffer

[AArch64][GlobalISel] Mark v2s64 -> v2p0 G_INTTOPTR as legal

Allow

```
%x:_<2 x p0> = G_INTTOPTR %y:_<2 x s64>
```

This shows up when building clang for AArch64 with GlobalISel.

Also show that we can select it.

This should match SDAG's behaviour: https://godbolt.org/z/33oqYoaYv

Differential Revision: https://reviews.llvm.org/D105944

Revert "[NFC][sanitizer] Simplify MapPackedCounterArrayBuffer"

Does not compile.

This reverts commit 8725b382b0a5ea375252d966bafbace62a21e93b.