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Avoid allocations in trampoline shims

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There's no need to name each export since each synthetic instance we're
creating only has one export, so let's use the empty string which
doesn't require any allocations.
This commit is contained in:
Alex Crichton
2020-10-16 08:22:13 -07:00
parent f27c0f3434
commit b8794448b0
5 changed files with 11 additions and 11 deletions
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4
crates/wasmtime/src/trampoline/func.rs
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@@ -230,7 +230,7 @@ pub fn create_handle_with_function(
let func_id = module.functions.push(sig_id);
module
.exports
.insert("trampoline".to_string(), EntityIndex::Function(func_id));
.insert(String::new(), EntityIndex::Function(func_id));
let trampoline = make_trampoline(isa.as_ref(), &mut code_memory, &mut fn_builder_ctx, &sig);
finished_functions.push(trampoline);
@@ -289,7 +289,7 @@ pub unsafe fn create_handle_with_raw_function(
let func_id = module.functions.push(sig_id);
module
.exports
.insert("trampoline".to_string(), EntityIndex::Function(func_id));
.insert(String::new(), EntityIndex::Function(func_id));
finished_functions.push(func);
let sig_id = store.register_signature(ft.to_wasm_func_type(), sig);
trampolines.insert(sig_id, trampoline);