zxybazh commented on code in PR #13050:
URL: https://github.com/apache/tvm/pull/13050#discussion_r995343161
##########
src/relay/backend/task_extraction.cc:
##########
@@ -42,26 +46,35 @@ Array<meta_schedule::ExtractedTask> ExtractTask(IRModule
mod, Target target,
mod = transform::Sequential(pass_seqs)(std::move(mod));
std::vector<ExtractedTask> tasks;
- std::unordered_map<tec::CCacheKey, ExtractedTask> cache;
+
+ auto mod_eq = meta_schedule::ModuleEquality::Create(mod_eq_name);
+
+ std::unordered_map<IRModule, ExtractedTask, ModuleHash, ModuleEqual> cache(
+ /*bucket_count*/ 0, ModuleHash(*mod_eq), ModuleEqual(*mod_eq));
+
PostOrderVisit(mod->Lookup("main"), [&target, &tasks, &cache,
&tir_converter](const Expr& exp) {
if (exp->IsInstance<FunctionNode>()) {
Function relay_func = Downcast<Function>(exp);
if (!relay_func->HasNonzeroAttr(attr::kPrimitive)) {
return;
}
- tec::CCacheKey cache_key(relay_func, target);
- auto it = cache.find(cache_key);
- if (it != cache.end()) {
- it->second->weight += 1;
- return;
- }
+
auto [inputs_outputs, constants, fused_name] =
tec::LowerTECompute(relay_func, target, /*return_inputs=*/true);
+
if (Optional<tir::PrimFunc> f = tir_converter(inputs_outputs,
constants)) {
+ IRModule tir_mod = PrimFuncToIRModule(f.value());
+
+ auto it = cache.find(tir_mod);
Review Comment:
Let's leave a comment for this note: `Note that the cache is now key-ed on
the tir mod, rather than the relay mod (which tec::CCacheKey uses).`
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