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authorDibyendu Majumdar <mobile@majumdar.org.uk>2023-08-19 08:52:57 -0700
committerDibyendu Majumdar <mobile@majumdar.org.uk>2026-10-24 15:56:44 -0700
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Chapter 1: Introduction
Co-authored-by: Cliff Click <cliffc@acm.org> Co-authored-by: Thalia Archibald <thalia@archibald.dev> Co-authored-by: hadha <helsgithub15@gmail.com> Co-authored-by: XmiliaH <45106915+XmiliaH@users.noreply.github.com> Co-authored-by: Tamás Hadházy <85063808+Hels15@users.noreply.github.com> Co-authored-by: Jun Kawasaki <jun784@gmail.com>
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+# Current allocator comparison
+
+`make spill-stats` measures Chapters 20, 21, 22, 23, 24b, and 28b against the
+historical test cohorts. Cohort IDs and test names retain their old numbers;
+column headings identify the current compiler directories.
+
+These are separate from the dated [pre-split measurements](../regalloc-spills.md).
+After a successful run, `python build-support/spill-matrix.py --reuse --update-docs`
+updates only this table. Fresh logs use 24b/28b names so old 24/25 results cannot
+silently become measurements of new compiler snapshots.
+
+<!-- spill-matrix:start -->
+No post-split measurement has been published yet.
+<!-- spill-matrix:end -->