Mousius commented on a change in pull request #9163:
URL: https://github.com/apache/tvm/pull/9163#discussion_r719577836
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File path: src/relay/backend/contrib/cmsisnn/relay_to_tir.cc
##########
@@ -32,17 +32,37 @@ namespace relay {
namespace contrib {
namespace cmsisnn {
-class RelayToTIR : public MixedModeVisitor {
+class RelayToTIRVisitor : public MixedModeVisitor {
public:
- explicit RelayToTIR(String func_name) : func_name_(func_name) {}
+ explicit RelayToTIRVisitor(String func_name) : func_name_(func_name) {}
+
+ tir::PrimFunc GetReplacementPrimFunc() { return primfunc_; }
private:
- void emit_softmax_tir(const Expr& expr) {
+ template <typename T>
+ const T ArgumentToConstantValue(const Expr& arg) {
+ const ConstantNode* constant_node = arg.as<ConstantNode>();
+ return static_cast<const T*>(constant_node->data->data)[0];
+ }
+
+ void CreatePrimFuncForExtern(Array<tir::Var> func_signature,
+ tvm::Array<PrimExpr> call_extern_args) {
+ Map<String, ObjectRef> dict_attrs;
+ dict_attrs.Set("global_symbol", func_name_);
+ dict_attrs.Set("tir.noalias", Bool(true));
+
+ tir::Stmt body = tir::Evaluate(
+ tvm::tir::Call(DataType::Int(8), tir::builtin::call_extern(),
call_extern_args));
+
+ primfunc_ = tir::PrimFunc(func_signature, body, VoidType(), Map<tir::Var,
tir::Buffer>(),
+ DictAttrs(dict_attrs));
+ }
+
+ void EmitSoftMax(const Expr& expr) {
auto* quantize_call = expr.as<CallNode>();
auto* softmax_call = quantize_call->args[0].as<CallNode>();
auto* dequant_call = softmax_call->args[0].as<CallNode>();
- auto* scale_const = dequant_call->args[1].as<ConstantNode>();
- const float quant_scale = static_cast<const
float*>(scale_const->data->data)[0];
+ const float quant_scale =
ArgumentToConstantValue<float>(dequant_call->args[1]);
Review comment:
Awesome! I wish I'd known about this.
I'll do this in a follow up if it's ok with you? I'm going to be back here
anyway :smile_cat:
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