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Automatically clean up any unused values at the end of a block

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Brian Carroll 2021-12-21 13:10:34 +00:00
parent 17dc6668ec
commit 2a141b3586
3 changed files with 20 additions and 20 deletions
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2
compiler/gen_wasm/src/backend.rs
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@ -313,7 +313,7 @@ impl<'a> WasmBackend<'a> {
fn start_block(&mut self) {
// Wasm blocks can have result types, but we don't use them.
// You need the right type on the stack when you jump from an inner block to an outer one.
// The validation rules can be confusing, and implementing them adds complexity.
// The rules are confusing, and implementing them would add complexity and slow down code gen.
// Instead we use local variables to move a value from an inner block to an outer one.
self.block_depth += 1;
self.code_builder.block(BlockType::NoResult);