Changes

[lldb] Remove unused IsFunctionType is_variadic_ptr parameter (NFC)

`is_variadic_ptr` is unused.

Differential Revision: https://reviews.llvm.org/D92778

[ARM] Common inverse constant predicates to VPNOT

This scans through blocks looking for constants used as predicates in
MVE instructions. When two constants are found which are the inverse of
one another, the second can be replaced by a VPNOT of the first,
potentially allowing that not to be folded away into an else predicate
of a vpt block.

Differential Revision: https://reviews.llvm.org/D92470

[clang][cli] CompilerInvocationTest: join two test fixtures into one

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92825

[clang][cli] CompilerInvocationTest: rename member variable in fixture

Depends on D92825.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92826

[clang][cli] CompilerInvocationTest: split enum test into two

Depends on D92826.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92827

[clang][cli] CompilerInvocationTest: remove unnecessary command line arguments

Depends on D92827.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92828

[clang][cli] CompilerInvocationTest: check arg parsing does not produce diagnostics

Depends on D92828.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92829

[clang][cli] CompilerInvocationTest: join and add test cases

Depends on D92829.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92830

[clang][cli] CompilerInvocationTest: add tests for boolean options

Add more tests of the command line marshalling infrastructure.

The new tests now make a "round-trip": from arguments, to CompilerInvocation instance to arguments again in a single test case.

The TODOs are resolved in a follow-up patch.

Depends on D92830.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92774