[turbolev] Record backing store maps with AssumeMap [v8/v8 : main]

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Darius Mercadier (Gerrit)

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Dec 15, 2025, 8:32:06 AM (yesterday) Dec 15

to Marja Hölttä, chrom...@appspot.gserviceaccount.com, V8 LUCI CQ, dmercadi...@chromium.org, leszek...@chromium.org, v8-re...@googlegroups.com, verwaes...@chromium.org, victorgo...@chromium.org

Attention needed from Marja Hölttä

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Darius Mercadier . resolved

Thanks :)

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V8 LUCI CQ (Gerrit)

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Dec 15, 2025, 8:34:15 AM (yesterday) Dec 15

to Darius Mercadier, Marja Hölttä, chrom...@appspot.gserviceaccount.com, dmercadi...@chromium.org, leszek...@chromium.org, v8-re...@googlegroups.com, verwaes...@chromium.org, victorgo...@chromium.org

V8 LUCI CQ submitted the change

Change information

Commit message:

[turbolev] Record backing store maps with AssumeMap

... in order to improve LateLoadElimination for Turbolev.

Bug: 431933185

Change-Id: I6cbf1b21e9c27cf6bfcce462ddae8b286f7a2447

Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/7253517

Commit-Queue: Darius Mercadier <dmerc...@chromium.org>

Reviewed-by: Marja Hölttä <ma...@chromium.org>

Cr-Commit-Position: refs/heads/main@{#104321}

Files:

M src/compiler/turboshaft/turbolev-graph-builder.cc
M src/maglev/maglev-graph-builder.cc
M src/maglev/maglev-graph-builder.h
M src/maglev/maglev-graph-optimizer.cc
M src/maglev/maglev-ir.h
A test/mjsunit/turbolev/load-elimination-backing-store-alias.js

Change size: M

Delta: 6 files changed, 119 insertions(+), 7 deletions(-)

Branch: refs/heads/main

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Code-Review: +1 by Marja Hölttä

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