754 lines
30 KiB
Rust
754 lines
30 KiB
Rust
use crate::backend::{
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ret_locs, BlockCallingConvention, CodeGenSession, Context, Label, VirtualCallingConvention,
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};
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use crate::error::Error;
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use crate::microwasm::*;
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use crate::module::{ModuleContext, SigType, Signature};
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use cranelift_codegen::binemit;
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use either::{Either, Left, Right};
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use multi_mut::HashMapMultiMut;
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use std::{collections::HashMap, hash::Hash};
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#[derive(Debug)]
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struct Block {
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label: BrTarget<Label>,
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calling_convention: Option<Either<BlockCallingConvention, VirtualCallingConvention>>,
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params: u32,
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// TODO: Is there a cleaner way to do this? `has_backwards_callers` should always be set if `is_next`
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// is false, so we should probably use an `enum` here.
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is_next: bool,
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num_callers: Option<u32>,
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actual_num_callers: u32,
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has_backwards_callers: bool,
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}
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impl Block {
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fn should_serialize_args(&self) -> bool {
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self.calling_convention.is_none()
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&& (self.num_callers != Some(1) || self.has_backwards_callers)
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}
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}
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const DISASSEMBLE: bool = false;
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pub fn translate_wasm<M>(
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session: &mut CodeGenSession<M>,
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reloc_sink: &mut dyn binemit::RelocSink,
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func_idx: u32,
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body: &wasmparser::FunctionBody,
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) -> Result<(), Error>
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where
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M: ModuleContext,
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for<'any> &'any M::Signature: Into<OpSig>,
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{
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let ty = session.module_context.defined_func_type(func_idx);
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if DISASSEMBLE {
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let microwasm_conv = MicrowasmConv::new(
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session.module_context,
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ty.params().iter().map(SigType::to_microwasm_type),
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ty.returns().iter().map(SigType::to_microwasm_type),
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body,
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);
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let _ = crate::microwasm::dis(
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std::io::stdout(),
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func_idx,
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microwasm_conv.flat_map(|ops| ops.unwrap()),
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);
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}
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let microwasm_conv = MicrowasmConv::new(
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session.module_context,
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ty.params().iter().map(SigType::to_microwasm_type),
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ty.returns().iter().map(SigType::to_microwasm_type),
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body,
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);
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translate(
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session,
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reloc_sink,
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func_idx,
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microwasm_conv.flat_map(|i| i.expect("TODO: Make this not panic")),
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)
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}
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pub fn translate<M, I, L>(
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session: &mut CodeGenSession<M>,
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reloc_sink: &mut dyn binemit::RelocSink,
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func_idx: u32,
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body: I,
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) -> Result<(), Error>
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where
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M: ModuleContext,
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I: IntoIterator<Item = Operator<L>>,
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L: Hash + Clone + Eq,
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{
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fn drop_elements<T>(stack: &mut Vec<T>, depths: std::ops::RangeInclusive<u32>) {
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let _ = (|| {
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let start = stack
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.len()
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.checked_sub(1)?
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.checked_sub(*depths.end() as usize)?;
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let end = stack
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.len()
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.checked_sub(1)?
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.checked_sub(*depths.start() as usize)?;
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let real_range = start..=end;
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stack.drain(real_range);
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Some(())
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})();
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}
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let func_type = session.module_context.defined_func_type(func_idx);
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let mut body = body.into_iter().peekable();
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let module_context = &*session.module_context;
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let ctx = &mut session.new_context(func_idx, reloc_sink);
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let params = func_type
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.params()
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.iter()
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.map(|t| t.to_microwasm_type())
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.collect::<Vec<_>>();
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ctx.start_function(params.iter().cloned());
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let mut blocks = HashMap::<BrTarget<L>, Block>::new();
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let num_returns = func_type.returns().len();
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blocks.insert(
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BrTarget::Return,
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Block {
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label: BrTarget::Return,
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params: num_returns as u32,
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// TODO: This only works for integers
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//
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calling_convention: Some(Left(BlockCallingConvention::function_start(ret_locs(
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func_type.returns().iter().map(|t| t.to_microwasm_type()),
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)))),
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is_next: false,
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has_backwards_callers: false,
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actual_num_callers: 0,
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num_callers: None,
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},
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);
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while let Some(op) = body.next() {
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if let Some(Operator::Label(label)) = body.peek() {
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let block = blocks
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.get_mut(&BrTarget::Label(label.clone()))
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.unwrap_or_else(|| panic!("Label defined before being declared"));
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block.is_next = true;
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}
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match op {
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Operator::Unreachable => {
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ctx.trap();
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}
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Operator::Label(label) => {
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use std::collections::hash_map::Entry;
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if let Entry::Occupied(mut entry) = blocks.entry(BrTarget::Label(label.clone())) {
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let has_backwards_callers = {
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let block = entry.get_mut();
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// TODO: Maybe we want to restrict Microwasm so that at least one of its callers
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// must be before the label. In an ideal world the restriction would be that
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// blocks without callers are illegal, but that's not reasonably possible for
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// Microwasm generated from Wasm.
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if block.actual_num_callers == 0 {
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loop {
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let done = match body.peek() {
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Some(Operator::Label(_)) | None => true,
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Some(_) => false,
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};
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if done {
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break;
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}
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let skipped = body.next();
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// We still want to honour block definitions even in unreachable code
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if let Some(Operator::Block {
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label,
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has_backwards_callers,
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params,
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num_callers,
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}) = skipped
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{
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let asm_label = ctx.create_label();
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blocks.insert(
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BrTarget::Label(label),
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Block {
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label: BrTarget::Label(asm_label),
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params: params.len() as _,
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calling_convention: None,
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is_next: false,
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has_backwards_callers,
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actual_num_callers: 0,
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num_callers,
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},
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);
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}
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}
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continue;
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}
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block.is_next = false;
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// TODO: We can `take` this if it's a `Right`
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match block.calling_convention.as_ref() {
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Some(Left(cc)) => {
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ctx.apply_cc(cc);
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}
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Some(Right(virt)) => {
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ctx.set_state(virt.clone());
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}
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_ => {}
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}
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ctx.define_label(block.label.label().unwrap().clone());
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block.has_backwards_callers
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};
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// To reduce memory overhead
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if !has_backwards_callers {
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entry.remove_entry();
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}
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} else {
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panic!("Label defined before being declared");
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}
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}
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Operator::Block {
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label,
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has_backwards_callers,
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params,
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num_callers,
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} => {
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let asm_label = ctx.create_label();
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blocks.insert(
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BrTarget::Label(label),
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Block {
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label: BrTarget::Label(asm_label),
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params: params.len() as _,
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calling_convention: None,
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is_next: false,
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has_backwards_callers,
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actual_num_callers: 0,
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num_callers,
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},
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);
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}
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Operator::Br { target } => {
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// TODO: We should add the block to the hashmap if we don't have it already
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let block = blocks.get_mut(&target).unwrap();
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block.actual_num_callers += 1;
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let should_serialize_args = block.should_serialize_args();
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match block {
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Block {
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is_next,
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label: BrTarget::Label(l),
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calling_convention,
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..
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} => {
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let cc = if should_serialize_args {
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*calling_convention = Some(Left(ctx.serialize_args(block.params)));
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None
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} else {
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calling_convention
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.as_ref()
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.map(Either::as_ref)
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.and_then(Either::left)
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};
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if let Some(cc) = cc {
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ctx.pass_block_args(cc);
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}
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if !*is_next {
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ctx.br(*l);
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}
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}
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Block {
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label: BrTarget::Return,
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calling_convention: Some(Left(cc)),
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..
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} => {
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ctx.pass_block_args(cc);
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ctx.ret();
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}
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_ => unimplemented!(),
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}
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}
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Operator::BrIf { then, else_ } => {
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let (then_block, else_block) = blocks.pair_mut(&then.target, &else_.target);
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// TODO: If actual_num_callers == num_callers then we can remove this block from the hashmap.
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// This frees memory and acts as a kind of verification that `num_callers` is set
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// correctly. It doesn't help for loops and block ends generated from Wasm.
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then_block.actual_num_callers += 1;
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else_block.actual_num_callers += 1;
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let then_block_parts = (then_block.is_next, then_block.label);
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let else_block_parts = (else_block.is_next, else_block.label);
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// TODO: The blocks should have compatible (one must be subset of other?) calling
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// conventions or else at least one must have no calling convention. This
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// should always be true for converting from WebAssembly AIUI.
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let f = |ctx: &mut Context<_>| {
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let then_block_should_serialize_args = then_block.should_serialize_args();
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let else_block_should_serialize_args = else_block.should_serialize_args();
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match (
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(&mut then_block.calling_convention, &then.to_drop),
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(&mut else_block.calling_convention, &else_.to_drop),
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) {
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((Some(Left(ref cc)), to_drop), ref mut other @ (None, _))
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| (ref mut other @ (None, _), (Some(Left(ref cc)), to_drop)) => {
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let mut cc =
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ctx.serialize_block_args_preserve_flags(cc, to_drop.clone());
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if let Some(to_drop) = other.1 {
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drop_elements(&mut cc.arguments, to_drop.clone());
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}
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*other.0 = Some(Left(cc));
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}
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(
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(ref mut then_cc @ None, then_to_drop),
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(ref mut else_cc @ None, else_to_drop),
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) => {
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let max_params = then_block.params.max(else_block.params);
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let cc = if then_block_should_serialize_args {
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Left(ctx.serialize_args(max_params))
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} else if else_block_should_serialize_args {
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Left(ctx.serialize_args(max_params))
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} else {
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Right(ctx.virtual_calling_convention())
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};
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**then_cc = {
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let mut cc = cc.clone();
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if let Some(to_drop) = then_to_drop.clone() {
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match &mut cc {
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Left(cc) => drop_elements(&mut cc.arguments, to_drop),
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Right(cc) => drop_elements(&mut cc.stack, to_drop),
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}
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}
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Some(cc)
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};
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**else_cc = {
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let mut cc = cc;
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if let Some(to_drop) = else_to_drop.clone() {
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match &mut cc {
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Left(cc) => drop_elements(&mut cc.arguments, to_drop),
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Right(cc) => drop_elements(&mut cc.stack, to_drop),
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}
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}
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Some(cc)
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};
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}
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_ => unimplemented!(
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"Can't pass different params to different sides of `br_if` yet"
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),
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}
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};
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match (then_block_parts, else_block_parts) {
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((true, _), (false, else_)) => {
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ctx.br_if_false(else_, f);
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}
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((false, then), (true, _)) => {
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ctx.br_if_true(then, f);
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}
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((false, then), (false, else_)) => {
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ctx.br_if_true(then, f);
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ctx.br(else_);
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}
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other => unimplemented!("{:#?}", other),
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}
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}
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Operator::BrTable(BrTable { targets, default }) => {
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use itertools::Itertools;
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let (label, num_callers, params) = {
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let def = &blocks[&default.target];
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(
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if def.is_next { None } else { Some(def.label) },
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def.num_callers,
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def.params,
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)
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};
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let target_labels = targets
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.iter()
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.map(|target| {
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let block = &blocks[&target.target];
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if block.is_next {
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None
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} else {
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Some(block.label)
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}
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})
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.collect::<Vec<_>>();
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ctx.br_table(target_labels, label, |ctx| {
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let mut cc = None;
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let mut max_params = params;
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let mut max_num_callers = num_callers;
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for target in targets.iter().chain(std::iter::once(&default)).unique() {
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let block = blocks.get_mut(&target.target).unwrap();
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block.actual_num_callers += 1;
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if block.calling_convention.is_some() {
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assert!(cc.is_none(), "Can't pass different params to different elements of `br_table` yet");
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cc = block.calling_convention.clone();
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}
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if let Some(max) = max_num_callers {
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max_num_callers = block.num_callers.map(|n| max.max(n));
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}
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max_params = max_params.max(block.params);
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}
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if let Some(Left(cc)) = &cc {
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ctx.pass_block_args(cc);
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}
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let cc = cc.unwrap_or_else(||
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if max_num_callers.map(|callers| callers <= 1).unwrap_or(false) {
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Right(ctx.virtual_calling_convention())
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} else {
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Left(ctx.serialize_args(max_params))
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}
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);
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for target in targets.iter().chain(std::iter::once(&default)).unique() {
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let block = blocks.get_mut(&target.target).unwrap();
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let mut cc = cc.clone();
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if let Some(to_drop) = target.to_drop.clone() {
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match &mut cc {
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Left(cc) => drop_elements(&mut cc.arguments, to_drop),
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Right(cc) => drop_elements(&mut cc.stack, to_drop),
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}
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}
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block.calling_convention = Some(cc);
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}
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});
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}
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Operator::Swap(depth) => ctx.swap(depth),
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Operator::Pick(depth) => ctx.pick(depth),
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Operator::Eq(I32) => ctx.i32_eq(),
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Operator::Eqz(Size::_32) => ctx.i32_eqz(),
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Operator::Ne(I32) => ctx.i32_neq(),
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Operator::Lt(SI32) => ctx.i32_lt_s(),
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Operator::Le(SI32) => ctx.i32_le_s(),
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Operator::Gt(SI32) => ctx.i32_gt_s(),
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Operator::Ge(SI32) => ctx.i32_ge_s(),
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Operator::Lt(SU32) => ctx.i32_lt_u(),
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Operator::Le(SU32) => ctx.i32_le_u(),
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Operator::Gt(SU32) => ctx.i32_gt_u(),
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Operator::Ge(SU32) => ctx.i32_ge_u(),
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Operator::Add(I32) => ctx.i32_add(),
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Operator::Sub(I32) => ctx.i32_sub(),
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Operator::And(Size::_32) => ctx.i32_and(),
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Operator::Or(Size::_32) => ctx.i32_or(),
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Operator::Xor(Size::_32) => ctx.i32_xor(),
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Operator::Mul(I32) => ctx.i32_mul(),
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Operator::Div(SU32) => ctx.i32_div_u(),
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Operator::Div(SI32) => ctx.i32_div_s(),
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Operator::Rem(sint::I32) => ctx.i32_rem_s(),
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Operator::Rem(sint::U32) => ctx.i32_rem_u(),
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Operator::Shl(Size::_32) => ctx.i32_shl(),
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Operator::Shr(sint::I32) => ctx.i32_shr_s(),
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Operator::Shr(sint::U32) => ctx.i32_shr_u(),
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Operator::Rotl(Size::_32) => ctx.i32_rotl(),
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Operator::Rotr(Size::_32) => ctx.i32_rotr(),
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Operator::Clz(Size::_32) => ctx.i32_clz(),
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Operator::Ctz(Size::_32) => ctx.i32_ctz(),
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Operator::Popcnt(Size::_32) => ctx.i32_popcnt(),
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Operator::Eq(I64) => ctx.i64_eq(),
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Operator::Eqz(Size::_64) => ctx.i64_eqz(),
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Operator::Ne(I64) => ctx.i64_neq(),
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Operator::Lt(SI64) => ctx.i64_lt_s(),
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Operator::Le(SI64) => ctx.i64_le_s(),
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Operator::Gt(SI64) => ctx.i64_gt_s(),
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Operator::Ge(SI64) => ctx.i64_ge_s(),
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Operator::Lt(SU64) => ctx.i64_lt_u(),
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Operator::Le(SU64) => ctx.i64_le_u(),
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Operator::Gt(SU64) => ctx.i64_gt_u(),
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Operator::Ge(SU64) => ctx.i64_ge_u(),
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Operator::Add(I64) => ctx.i64_add(),
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Operator::Sub(I64) => ctx.i64_sub(),
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Operator::And(Size::_64) => ctx.i64_and(),
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Operator::Or(Size::_64) => ctx.i64_or(),
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Operator::Xor(Size::_64) => ctx.i64_xor(),
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Operator::Mul(I64) => ctx.i64_mul(),
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Operator::Div(SU64) => ctx.i64_div_u(),
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Operator::Div(SI64) => ctx.i64_div_s(),
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Operator::Rem(sint::I64) => ctx.i64_rem_s(),
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Operator::Rem(sint::U64) => ctx.i64_rem_u(),
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Operator::Shl(Size::_64) => ctx.i64_shl(),
|
|
Operator::Shr(sint::I64) => ctx.i64_shr_s(),
|
|
Operator::Shr(sint::U64) => ctx.i64_shr_u(),
|
|
Operator::Rotl(Size::_64) => ctx.i64_rotl(),
|
|
Operator::Rotr(Size::_64) => ctx.i64_rotr(),
|
|
Operator::Clz(Size::_64) => ctx.i64_clz(),
|
|
Operator::Ctz(Size::_64) => ctx.i64_ctz(),
|
|
Operator::Popcnt(Size::_64) => ctx.i64_popcnt(),
|
|
Operator::Add(F32) => ctx.f32_add(),
|
|
Operator::Mul(F32) => ctx.f32_mul(),
|
|
Operator::Sub(F32) => ctx.f32_sub(),
|
|
Operator::Div(SF32) => ctx.f32_div(),
|
|
Operator::Min(Size::_32) => ctx.f32_min(),
|
|
Operator::Max(Size::_32) => ctx.f32_max(),
|
|
Operator::Copysign(Size::_32) => ctx.f32_copysign(),
|
|
Operator::Sqrt(Size::_32) => ctx.f32_sqrt(),
|
|
Operator::Neg(Size::_32) => ctx.f32_neg(),
|
|
Operator::Abs(Size::_32) => ctx.f32_abs(),
|
|
Operator::Floor(Size::_32) => ctx.f32_floor(),
|
|
Operator::Ceil(Size::_32) => ctx.f32_ceil(),
|
|
Operator::Nearest(Size::_32) => ctx.f32_nearest(),
|
|
Operator::Trunc(Size::_32) => ctx.f32_trunc(),
|
|
Operator::Eq(F32) => ctx.f32_eq(),
|
|
Operator::Ne(F32) => ctx.f32_ne(),
|
|
Operator::Gt(SF32) => ctx.f32_gt(),
|
|
Operator::Ge(SF32) => ctx.f32_ge(),
|
|
Operator::Lt(SF32) => ctx.f32_lt(),
|
|
Operator::Le(SF32) => ctx.f32_le(),
|
|
Operator::Add(F64) => ctx.f64_add(),
|
|
Operator::Mul(F64) => ctx.f64_mul(),
|
|
Operator::Sub(F64) => ctx.f64_sub(),
|
|
Operator::Div(SF64) => ctx.f64_div(),
|
|
Operator::Min(Size::_64) => ctx.f64_min(),
|
|
Operator::Max(Size::_64) => ctx.f64_max(),
|
|
Operator::Copysign(Size::_64) => ctx.f64_copysign(),
|
|
Operator::Sqrt(Size::_64) => ctx.f64_sqrt(),
|
|
Operator::Neg(Size::_64) => ctx.f64_neg(),
|
|
Operator::Abs(Size::_64) => ctx.f64_abs(),
|
|
Operator::Floor(Size::_64) => ctx.f64_floor(),
|
|
Operator::Ceil(Size::_64) => ctx.f64_ceil(),
|
|
Operator::Nearest(Size::_64) => ctx.f64_nearest(),
|
|
Operator::Trunc(Size::_64) => ctx.f64_trunc(),
|
|
Operator::Eq(F64) => ctx.f64_eq(),
|
|
Operator::Ne(F64) => ctx.f64_ne(),
|
|
Operator::Gt(SF64) => ctx.f64_gt(),
|
|
Operator::Ge(SF64) => ctx.f64_ge(),
|
|
Operator::Lt(SF64) => ctx.f64_lt(),
|
|
Operator::Le(SF64) => ctx.f64_le(),
|
|
Operator::Drop(range) => ctx.drop(range),
|
|
Operator::Const(val) => ctx.const_(val),
|
|
Operator::I32WrapFromI64 => {}
|
|
// All reinterpret operators are no-ops - we do the conversion at the point of usage.
|
|
Operator::I32ReinterpretFromF32 => {}
|
|
Operator::I64ReinterpretFromF64 => {}
|
|
Operator::F32ReinterpretFromI32 => {}
|
|
Operator::F64ReinterpretFromI64 => {}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_32,
|
|
output_ty: sint::I32,
|
|
} => {
|
|
ctx.i32_truncate_f32_s();
|
|
}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_32,
|
|
output_ty: sint::U32,
|
|
} => {
|
|
ctx.i32_truncate_f32_u();
|
|
}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_64,
|
|
output_ty: sint::I32,
|
|
} => {
|
|
ctx.i32_truncate_f64_s();
|
|
}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_64,
|
|
output_ty: sint::U32,
|
|
} => {
|
|
ctx.i32_truncate_f64_u();
|
|
}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_32,
|
|
output_ty: sint::I64,
|
|
} => {
|
|
ctx.i64_truncate_f32_s();
|
|
}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_32,
|
|
output_ty: sint::U64,
|
|
} => {
|
|
ctx.i64_truncate_f32_u();
|
|
}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_64,
|
|
output_ty: sint::I64,
|
|
} => {
|
|
ctx.i64_truncate_f64_s();
|
|
}
|
|
Operator::ITruncFromF {
|
|
input_ty: Size::_64,
|
|
output_ty: sint::U64,
|
|
} => {
|
|
ctx.i64_truncate_f64_u();
|
|
}
|
|
Operator::Extend {
|
|
sign: Signedness::Unsigned,
|
|
} => ctx.i32_extend_u(),
|
|
Operator::Extend {
|
|
sign: Signedness::Signed,
|
|
} => ctx.i32_extend_s(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::I32,
|
|
output_ty: Size::_32,
|
|
} => ctx.f32_convert_from_i32_s(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::I32,
|
|
output_ty: Size::_64,
|
|
} => ctx.f64_convert_from_i32_s(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::I64,
|
|
output_ty: Size::_32,
|
|
} => ctx.f32_convert_from_i64_s(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::I64,
|
|
output_ty: Size::_64,
|
|
} => ctx.f64_convert_from_i64_s(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::U32,
|
|
output_ty: Size::_32,
|
|
} => ctx.f32_convert_from_i32_u(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::U32,
|
|
output_ty: Size::_64,
|
|
} => ctx.f64_convert_from_i32_u(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::U64,
|
|
output_ty: Size::_32,
|
|
} => ctx.f32_convert_from_i64_u(),
|
|
Operator::FConvertFromI {
|
|
input_ty: sint::U64,
|
|
output_ty: Size::_64,
|
|
} => ctx.f64_convert_from_i64_u(),
|
|
Operator::F64PromoteFromF32 => ctx.f64_from_f32(),
|
|
Operator::F32DemoteFromF64 => ctx.f32_from_f64(),
|
|
Operator::Load8 {
|
|
ty: sint::U32,
|
|
memarg,
|
|
} => ctx.i32_load8_u(memarg.offset),
|
|
Operator::Load16 {
|
|
ty: sint::U32,
|
|
memarg,
|
|
} => ctx.i32_load16_u(memarg.offset),
|
|
Operator::Load8 {
|
|
ty: sint::I32,
|
|
memarg,
|
|
} => ctx.i32_load8_s(memarg.offset),
|
|
Operator::Load16 {
|
|
ty: sint::I32,
|
|
memarg,
|
|
} => ctx.i32_load16_s(memarg.offset),
|
|
Operator::Load8 {
|
|
ty: sint::U64,
|
|
memarg,
|
|
} => ctx.i64_load8_u(memarg.offset),
|
|
Operator::Load16 {
|
|
ty: sint::U64,
|
|
memarg,
|
|
} => ctx.i64_load16_u(memarg.offset),
|
|
Operator::Load8 {
|
|
ty: sint::I64,
|
|
memarg,
|
|
} => ctx.i64_load8_s(memarg.offset),
|
|
Operator::Load16 {
|
|
ty: sint::I64,
|
|
memarg,
|
|
} => ctx.i64_load16_s(memarg.offset),
|
|
Operator::Load32 {
|
|
sign: Signedness::Unsigned,
|
|
memarg,
|
|
} => ctx.i64_load32_u(memarg.offset),
|
|
Operator::Load32 {
|
|
sign: Signedness::Signed,
|
|
memarg,
|
|
} => ctx.i64_load32_s(memarg.offset),
|
|
Operator::Load { ty: I32, memarg } => ctx.i32_load(memarg.offset),
|
|
Operator::Load { ty: F32, memarg } => ctx.f32_load(memarg.offset),
|
|
Operator::Load { ty: I64, memarg } => ctx.i64_load(memarg.offset),
|
|
Operator::Load { ty: F64, memarg } => ctx.f64_load(memarg.offset),
|
|
Operator::Store8 { ty: _, memarg } => ctx.store8(memarg.offset),
|
|
Operator::Store16 { ty: _, memarg } => ctx.store16(memarg.offset),
|
|
Operator::Store32 { memarg }
|
|
| Operator::Store { ty: I32, memarg }
|
|
| Operator::Store { ty: F32, memarg } => ctx.store32(memarg.offset),
|
|
Operator::Store { ty: I64, memarg } | Operator::Store { ty: F64, memarg } => {
|
|
ctx.store64(memarg.offset)
|
|
}
|
|
Operator::GetGlobal(idx) => ctx.get_global(idx),
|
|
Operator::SetGlobal(idx) => ctx.set_global(idx),
|
|
Operator::Select => {
|
|
ctx.select();
|
|
}
|
|
Operator::MemorySize { reserved: _ } => {
|
|
ctx.memory_size();
|
|
}
|
|
Operator::MemoryGrow { reserved: _ } => {
|
|
ctx.memory_grow();
|
|
}
|
|
Operator::Call { function_index } => {
|
|
let callee_ty = module_context.func_type(function_index);
|
|
|
|
if let Some(defined_index) = module_context.defined_func_index(function_index) {
|
|
if function_index == func_idx {
|
|
ctx.call_direct_self(
|
|
defined_index,
|
|
callee_ty.params().iter().map(|t| t.to_microwasm_type()),
|
|
callee_ty.returns().iter().map(|t| t.to_microwasm_type()),
|
|
);
|
|
} else {
|
|
ctx.call_direct(
|
|
function_index,
|
|
callee_ty.params().iter().map(|t| t.to_microwasm_type()),
|
|
callee_ty.returns().iter().map(|t| t.to_microwasm_type()),
|
|
);
|
|
}
|
|
} else {
|
|
ctx.call_direct_imported(
|
|
function_index,
|
|
callee_ty.params().iter().map(|t| t.to_microwasm_type()),
|
|
callee_ty.returns().iter().map(|t| t.to_microwasm_type()),
|
|
);
|
|
}
|
|
}
|
|
Operator::CallIndirect {
|
|
type_index,
|
|
table_index,
|
|
} => {
|
|
assert_eq!(table_index, 0);
|
|
|
|
let callee_ty = module_context.signature(type_index);
|
|
|
|
// TODO: this implementation assumes that this function is locally defined.
|
|
|
|
ctx.call_indirect(
|
|
type_index,
|
|
callee_ty.params().iter().map(|t| t.to_microwasm_type()),
|
|
callee_ty.returns().iter().map(|t| t.to_microwasm_type()),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
ctx.epilogue();
|
|
|
|
Ok(())
|
|
}
|