[GitHub] [tvm] tkonolige commented on a change in pull request #7495: [Relay VM] VM Profiler Supports Profiling Instruction Stats

[GitBox <gi...@apache.org>]

tkonolige commented on a change in pull request #7495:
URL: https://github.com/apache/tvm/pull/7495#discussion_r580414040



##########
File path: src/runtime/vm/vm.cc
##########
@@ -360,11 +360,34 @@ void VirtualMachine::RunLoop() {
   ICHECK(this->code_);
   pc_ = 0;
   Index frame_start = frames_.size();
+
+#ifdef USE_VM_PROFILER
+  bool started = false;
+  Opcode last_inst;
+  auto inst_begin = std::chrono::high_resolution_clock::now();
+  auto inst_end = inst_begin;
+#endif
+
   while (true) {
   main_loop:
     auto const& instr = code_[this->pc_];
     DLOG(INFO) << "Executing(" << pc_ << "): " << instr;
 
+#ifdef USE_VM_PROFILER
+    if (started) {
+      inst_end = std::chrono::high_resolution_clock::now();
+      double inst_duration =
+        std::chrono::duration_cast<std::chrono::duration<double>>(inst_end - inst_begin)\
+        .count() * 1e6;

Review comment:
       ```suggestion
           std::chrono::duration<double, std::micro>(inst_end - inst_begin)\
           .count();
   ```




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