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cranelift-wasm: support multi-value Wasm (#1049)

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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.
This commit is contained in:
Nick Fitzgerald
2019-10-02 12:40:35 -07:00
committed by GitHub
parent f9d802fb1d
commit 10be3e4ba8
30 changed files with 610 additions and 138 deletions
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22
cranelift/wasmtests/multi-15.wat Normal file
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@@ -0,0 +1,22 @@
(module
(func (export "large-sig")
(param i32 i64 f32 f32 i32 f64 f32 i32 i32 i32 f32 f64 f64 f64 i32 i32 f32)
(result f64 f32 i32 i32 i32 i64 f32 i32 i32 f32 f64 f64 i32 f32 i32 f64)
(local.get 5)
(local.get 2)
(local.get 0)
(local.get 8)
(local.get 7)
(local.get 1)
(local.get 3)
(local.get 9)
(local.get 4)
(local.get 6)
(local.get 13)
(local.get 11)
(local.get 15)
(local.get 16)
(local.get 14)
(local.get 12)
)
)