[all-commits] [llvm/llvm-project] 733dc3: [BOLT] Report per-section hotness in bolt-heatmap.

[Rahman Lavaee via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 733dc3e50b2d34ebccaba24ca72ce72b5a3545f6
      https://github.com/llvm/llvm-project/commit/733dc3e50b2d34ebccaba24ca72ce72b5a3545f6
  Author: Rahman Lavaee <rahmanl at google.com>
  Date:   2022-05-05 (Thu, 05 May 2022)

  Changed paths:
    M bolt/include/bolt/Profile/Heatmap.h
    M bolt/lib/Profile/DataAggregator.cpp
    M bolt/lib/Profile/Heatmap.cpp

  Log Message:
  -----------
  [BOLT] Report per-section hotness in bolt-heatmap.

This patch adds a new feature to bolt heatmap to print the hotness of each section in terms of the percentage of samples within that section.

Sample output generated for the clang binary:

Section Name, Begin Address, End Address, Percentage Hotness
.text, 0x1a7b9b0, 0x20a2cc0, 1.4709
.init, 0x20a2cc0, 0x20a2ce1, 0.0001
.fini, 0x20a2ce4, 0x20a2cf2, 0.0000
.text.unlikely, 0x20a2d00, 0x431990c, 0.3061
.text.hot, 0x4319910, 0x4bc6927, 97.2197
.text.startup, 0x4bc6930, 0x4c10c89, 0.0058
.plt, 0x4c10c90, 0x4c12010, 0.9974

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D124412