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Implement Wasm string equality

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This commit is contained in:
Brian Carroll 2021-12-14 10:45:47 +00:00
parent e1a04c2661
commit 86d8e2789e
3 changed files with 42 additions and 35 deletions
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45
compiler/gen_wasm/src/backend.rs
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@ -1,7 +1,7 @@
use bumpalo::{self, collections::Vec};
use code_builder::Align;
use roc_builtins::bitcode::IntWidth;
use roc_builtins::bitcode::{self, IntWidth};
use roc_collections::all::MutMap;
use roc_module::low_level::LowLevel;
use roc_module::symbol::{Interns, Symbol};
@ -958,29 +958,34 @@ impl<'a> WasmBackend<'a> {
BuiltinCall(name) => {
self.call_zig_builtin(name, param_types, ret_type);
}
GeneratedHelper => {
SpecializedEq | SpecializedNotEq => {
let layout = self.symbol_layouts[&arguments[0]];
let ident_ids = self
.interns
.all_ident_ids
.get_mut(&self.env.module_id)
.unwrap();
let (replacement_expr, maybe_new_proc_info) = self
.helper_proc_gen
.replace_generic_equals(ident_ids, &layout, arguments);
// If this is the first call to a new helper proc, register its symbol data
maybe_new_proc_info.map(|info| self.register_helper_proc(info));
self.build_expr(&return_sym, replacement_expr, &layout, storage);
if lowlevel == LowLevel::NotEq {
self.code_builder.i32_eqz();
if layout == Layout::Builtin(Builtin::Str) {
self.call_zig_builtin(bitcode::STR_EQUAL, param_types, ret_type);
} else {
debug_assert!(lowlevel == LowLevel::Eq);
let ident_ids = self
.interns
.all_ident_ids
.get_mut(&self.env.module_id)
.unwrap();
let (replacement_expr, maybe_new_proc_info) = self
.helper_proc_gen
.replace_generic_equals(ident_ids, &layout, arguments);
// If this is the first call to a new helper proc, register its symbol data
maybe_new_proc_info.map(|info| self.register_helper_proc(info));
self.build_expr(&return_sym, replacement_expr, &layout, storage);
}
if matches!(build_result, SpecializedNotEq) {
self.code_builder.i32_eqz();
}
}
SpecializedHash => {
todo!("Specialized hash functions")
}
NotImplemented => {
todo!("Low level operation {:?}", lowlevel)