Add some docs.
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@ -21,15 +21,17 @@ const DEFAULT_FRAME_STACK_LIMIT: usize = 16384;
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struct BlockFrame {
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/// Frame type.
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frame_type: BlockFrameType,
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/// A signature, which is a block signature type indicating the number and types of result values of the region.
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/// A signature, which is a block signature type indicating the number and types of result
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/// values of the region.
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block_type: BlockType,
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/// A label for reference to block instruction.
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begin_position: usize,
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/// A limit integer value, which is an index into the value stack indicating where to reset it to on a branch to that label.
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/// A limit integer value, which is an index into the value stack indicating where to reset it
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/// to on a branch to that label.
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value_stack_len: usize,
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/// Boolean which signals whether value stack became polymorphic. Value stack starts in non-polymorphic state and
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/// becomes polymorphic only after an instruction that never passes control further is executed,
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/// i.e. `unreachable`, `br` (but not `br_if`!), etc.
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/// Boolean which signals whether value stack became polymorphic. Value stack starts in
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/// a non-polymorphic state and becomes polymorphic only after an instruction that never passes
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/// control further is executed, i.e. `unreachable`, `br` (but not `br_if`!), etc.
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polymorphic_stack: bool,
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}
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@ -1783,6 +1785,9 @@ fn require_local(locals: &Locals, idx: u32) -> Result<ValueType, Error> {
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Ok(locals.type_of_local(idx)?)
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}
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/// Returns a relative depth on the stack of a local variable specified
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/// by `idx`.
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///
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/// See stack layout definition in mod isa.
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fn relative_local_depth(
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idx: u32,
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