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fix(es/minifier): Fix ordering issue of analyzer #6150

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merged 7 commits into from Oct 15, 2022
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@kdy1 kdy1 commented Oct 14, 2022

Description:

This is the groundwork for a parallel analyzer. This PR fixes the ordering issue of the analyzer so that the analyzer works identically regardless of visit order. This patch contains some improvements because previously, we mixed .and_modify() and .or_default().

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@kdy1 kdy1 added this to the Planned milestone Oct 14, 2022
@kdy1 kdy1 self-assigned this Oct 14, 2022
@kdy1 kdy1 requested a review from jridgewell October 14, 2022 10:27
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kdy1 commented Oct 14, 2022

cc @Austaras Do you think this analyzer patch is correct?

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swc-bump:

  • swc_ecma_minifier

@kdy1 kdy1 marked this pull request as ready for review October 14, 2022 10:28

v.var_initialized |= has_init;
})
.or_insert_with(|| VarUsageInfo {
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This is problematic because this closure is not called if the analyzer called .var_or_default() for the infection analysis

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Looks fine to me, but why tests changed?

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kdy1 commented Oct 14, 2022

Because or_insert_with may not be called due to var_or_default() calls.
If the alias analyzer calls var_or_default().add_infects(), there's an entry in the variable hash map so or_insert_with will not be called.

See #6150 (comment)

"use strict";
_class_call_check(this, C), this.prop = i;
};
arr.push(C);
});
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I see. In this case arr used to be marked as var_kind None.

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Yeah and that's why it was not inlined I guess

@kdy1 kdy1 enabled auto-merge (squash) October 15, 2022 04:01
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Automated review comment generated by auto-rebase script

@kdy1 kdy1 merged commit 6d0ca05 into swc-project:main Oct 15, 2022
@kdy1 kdy1 deleted the flat branch October 15, 2022 04:37
@kdy1 kdy1 modified the milestones: Planned, v1.3.9 Oct 17, 2022
@swc-project swc-project locked as resolved and limited conversation to collaborators Nov 16, 2022
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4 participants