New submission from Inada Naoki <songofaca...@gmail.com>:

BUILD_CONST_KEY_MAP can be optimized based on #41835 optimization.

1. compiler checks keys tuple is distinct.
2. Add distinct flag to BUILD_CONST_KEY_MAP oparg

To be considered:

* Should we use new opcode, instead of flag in oparg?
* Is this technique safe? Wrong co_consts can make invalid dict instance.

----------
assignee: methane
components: Interpreter Core
messages: 379415
nosy: methane
priority: normal
severity: normal
status: open
title: Optimize BUILD_CONST_KEY_MAP for distinct keys
type: performance
versions: Python 3.10

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue42126>
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