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Wasm: implement dead code elimination

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This commit is contained in:
Brian Carroll 2022-01-11 21:16:20 +00:00
parent 98400cae1b
commit 8a01c3f98a
6 changed files with 230 additions and 66 deletions
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9
compiler/gen_wasm/src/wasm_module/mod.rs
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@ -1,4 +1,5 @@
pub mod code_builder;
mod dead_code;
pub mod linking;
pub mod opcodes;
pub mod sections;
@ -44,7 +45,6 @@ impl<'a> WasmModule<'a> {
}
/// Serialize the module to bytes
/// (not using Serialize trait because it's just one more thing to export)
pub fn serialize<T: SerialBuffer>(&self, buffer: &mut T) {
buffer.append_u8(0);
buffer.append_slice("asm".as_bytes());
@ -125,16 +125,19 @@ impl<'a> WasmModule<'a> {
let mut cursor: usize = 8;
let mut types = TypeSection::preload(arena, bytes, &mut cursor);
types.cache_offsets();
let ret_types = types.parse_preloaded_data(arena);
let import = ImportSection::preload(arena, bytes, &mut cursor);
let function = FunctionSection::preload(arena, bytes, &mut cursor);
let signature_ids = function.parse_preloaded_data(arena);
let table = OpaqueSection::preload(SectionId::Table, arena, bytes, &mut cursor);
let memory = MemorySection::preload(arena, bytes, &mut cursor);
let global = GlobalSection::preload(arena, bytes, &mut cursor);
let export = ExportSection::preload(arena, bytes, &mut cursor);
let start = OpaqueSection::preload(SectionId::Start, arena, bytes, &mut cursor);
let element = OpaqueSection::preload(SectionId::Element, arena, bytes, &mut cursor);
let code = CodeSection::preload(arena, bytes, &mut cursor);
let code = CodeSection::preload(arena, bytes, &mut cursor, ret_types, signature_ids);
let data = DataSection::preload(arena, bytes, &mut cursor);
let linking = LinkingSection::new(arena);
let relocations = RelocationSection::new(arena, "reloc.CODE");