Kazu Hirata 37be0841b3 Reland: [MemProf] Dump inline call stacks as optimization remarks (#193545) ...

This iteration limits the test case to x86_64-linux to prevent bot
failures.

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This patch teaches the MemProf matching pass to dump inline call
stacks as analysis remarks like so:

frame: 704e4117e6a62739 main:10:5
frame: 273929e54b9f1234 foo:2:12
inline call stack: 704e4117e6a62739,273929e54b9f1234

The output consists of two types of remarks:

- "frame": Acts as a dictionary mapping a unique MD5-based FrameID
  to source information (function name, line offset, and column).

- "inline call stack": Provides the full call stack for a call site
  as a sequence of FrameIDs.

Both types of remarks are deduplicated to reduce the output size.

This patch is intended to be a debugging aid.

2026-04-22 11:52:35 -07:00

44 KiB

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