[llvm] [Hexagon] Passes for widening vector operations and shuffle opt (PR #169559)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-test-suite` running on `ppc64le-clang-test-suite` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/19310

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-build-unified-tree-check-all) failure: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
...
PASS: ThreadSanitizer-powerpc64le :: restore_stack.cpp (104402 of 104411)
PASS: mlgo-utils :: corpus/extract_ir_script.test (104403 of 104411)
PASS: SanitizerCommon-tsan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (104404 of 104411)
PASS: SanitizerCommon-asan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (104405 of 104411)
PASS: SanitizerCommon-ubsan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (104406 of 104411)
PASS: SanitizerCommon-lsan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (104407 of 104411)
PASS: SanitizerCommon-msan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (104408 of 104411)
PASS: Clang :: OpenMP/target_defaultmap_codegen_01.cpp (104409 of 104411)
PASS: Clang :: Driver/arm-cortex-cpus-1.c (104410 of 104411)
PASS: LLVM :: tools/llvm-readobj/ELF/file-header-machine-types.test (104411 of 104411)
command timed out: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=6996.628828

```

</details>

https://github.com/llvm/llvm-project/pull/169559