Changes

[BOLT] Set jobs=2 for bolt-worker-aarch64

[llvm-profdata] Add option to cap profile output size

D139603 (add option to llvm-profdata to reduce output profile size) contains test cases that are not cross-platform. Moving those tests to unit test and making sure the feature is callable from llvm library

Reviewed By: snehasish

Differential Revision: https://reviews.llvm.org/D141446

Revert "[llvm-profdata] Add option to cap profile output size"

This reverts commit 48f163b889a8f373474c7d198c43e27779f38692.

[mlir][vector] Support 0-D vector when eliding single element reduction

ElideSingleElementReduction causes assertion failure when we give 0-D vector. It's possible to fold the case by using vector.extractelement op instead. It's originally reported in https://github.com/llvm/llvm-project/issues/60193.

Reviewed By: dcaballe

Differential Revision: https://reviews.llvm.org/D143242

[Clang] Disable building tools for 32-bit hosts as well

Summary:
Offloading is not supported on 32-bit applications. We already disable
this for 32-bit cross-compiling but we also need to disable it for
32-bit native machines as well.

[MachineCopyPropagation] Eliminate spillage copies that might be caused by eviction chain

Remove spill-reload like copy chains. For example
```
r0 = COPY r1
r1 = COPY r2
r2 = COPY r3
r3 = COPY r4
<def-use r4>
r4 = COPY r3
r3 = COPY r2
r2 = COPY r1
r1 = COPY r0
```
will be folded into
```
r0 = COPY r1
r1 = COPY r4
<def-use r4>
r4 = COPY r1
r1 = COPY r0
```

Reviewed By: qcolombet

Differential Revision: https://reviews.llvm.org/D122118