This commit introduces initial support for multi-value Wasm. Wasm blocks and calls can now take and return an arbitrary number of values. The encoding for multi-value blocks means that we need to keep the contents of the "Types" section around when translating function bodies. To do this, we introduce a `WasmTypesMap` type that maps the type indices to their parameters and returns, construct it when parsing the "Types" section, and shepherd it through a bunch of functions and methods when translating function bodies.
10 lines
240 B
Plaintext
10 lines
240 B
Plaintext
(module
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(func (export "f") (param i64 i32) (result i64)
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(local.get 0)
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(local.get 1)
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;; If with no else. Same number of params and results.
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(if (param i64) (result i64)
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(then
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(drop)
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(i64.const -1)))))
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