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3422-beam_types-Slightly-optimize-join-1.patch
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File 3422-beam_types-Slightly-optimize-join-1.patch of Package erlang
From 92ae5befec973d9c6d147d4201060a7add1264b6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org> Date: Wed, 24 Feb 2021 05:29:34 +0100 Subject: [PATCH 2/3] beam_types: Slightly optimize join/1 --- lib/compiler/src/beam_types.erl | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/lib/compiler/src/beam_types.erl b/lib/compiler/src/beam_types.erl index 7559673a94..8a5f1775dd 100644 --- a/lib/compiler/src/beam_types.erl +++ b/lib/compiler/src/beam_types.erl @@ -180,9 +180,14 @@ mts_records(_RsA, _RsB, []) -> -spec join([type()]) -> type(). -join([T1, T2| Ts]) -> - join([join(T1, T2) | Ts]); -join([T]) -> T. +join([T | Ts]) -> + join_list(Ts, T). + +join_list([T | Ts], T) -> + join_list(Ts, T); +join_list([T1 | Ts], T) -> + join_list(Ts, join(T1, T)); +join_list([], T) -> T. %% Return the "join" of Type1 and Type2, which is more general than Type1 and %% Type2. This is identical to lub/2 but can operate on and produce unions. -- 2.26.2
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