[BOLT][DWARF][NFC] Added double escape characters (#93348)

Added double escape characters to lines that describe a test.

[BOLT] Fix jump table issue for split functions

A jump table in a split function may contain an entry matching a start
address of another fragment of the function. While converting addresses
to labe

[BOLT] Fix jump table issue for split functions

A jump table in a split function may contain an entry matching a start
address of another fragment of the function. While converting addresses
to labels, we used to ignore such entries resulting in underpopulated
jump table. Change that, so we always create one label per address.

Reviewed By: Amir

Differential Revision: https://reviews.llvm.org/D156013

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[BOLT][TEST] Use double dash flags in tests

Replace a single dash with a double dash for options that have more
than a single letter.

llvm-bolt-wrapper.py has special treatment for output options s

[BOLT][TEST] Use double dash flags in tests

Replace a single dash with a double dash for options that have more
than a single letter.

llvm-bolt-wrapper.py has special treatment for output options such as
"-o" and "-w" causing issues when a single dash is used, e.g. for
"-write-dwp". The wrapper can be fixed as well, but using a double dash
has other advantages as well.

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D127538

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[BOLT][TEST] Rename tests to follow standard naming scheme

Summary:
The majority of tests in LLVM projects are using - instead of _ in the name,
i.e. `check-something.test` is preferred over `check_

[BOLT][TEST] Rename tests to follow standard naming scheme

Summary:
The majority of tests in LLVM projects are using - instead of _ in the name,
i.e. `check-something.test` is preferred over `check_something.test`.

It makes sense for us to adopt the same naming scheme for our future tests and
to rename existing ones.

(cherry picked from FBD32185879)

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