Rahman Lavaee 6ac71a0149 [BasicBlockSections] Introduce the basic block sections profile version 1. (#65506) ...

This patch introduces a new version for the basic block sections profile
as was requested in D158442, while keeping backward compatibility for
the old version.

The new encoding is as follows:
```
m <module_name>
f <function_name_1> <function_name_2>...
c <bb_id_1> <bb_id_2> <bb_id_3>
c <bb_id_4> <bb_id_5>
...
```
Module name specifier (starting with 'm') is optional and allows
distinguishing profiles for internal-linkage functions with the same
name. If not specified, profile will be applied to any function with the
same name.
Function name specifier (starting with 'f') can specify multiple
function name aliases.
Finally, basic block clusters are specified by 'c' and specify the
cluster of basic blocks, and the internal order in which they must be
placed in the same section.

2023-09-22 12:37:04 -07:00

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