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Support profiling nested hierarchical mtasks with verilator_gantt (#5956)

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This commit is contained in:
Bartłomiej Chmiel
2025-04-24 07:50:07 -04:00
committed by GitHub
parent 6ac2aa2d99
commit d6e52b9400
9 changed files with 158 additions and 115 deletions
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src/V3ExecGraph.cpp
+12 -14
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@@ -916,18 +916,17 @@ void wrapMTaskBodies(AstExecGraph* const execGraphp) {
funcp->addStmtsp(new AstCStmt{flp, stmt});
};
if (v3Global.opt.hierChild() || !v3Global.opt.hierBlocks().empty()) {
addStrStmt(
"static const unsigned taskId = vlSymsp->__Vm_threadPoolp->assignTaskIndex();\n");
} else {
const string& id = std::to_string(mtaskp->id());
addStrStmt("static constexpr unsigned taskId = " + id + ";\n");
}
addStrStmt("static constexpr unsigned taskId = " + cvtToStr(mtaskp->id()) + ";\n");
if (v3Global.opt.profExec() && mtaskp->threads() <= 1) {
if (v3Global.opt.profExec()) {
const string& predictStart = std::to_string(mtaskp->predictStart());
addStrStmt("VL_EXEC_TRACE_ADD_RECORD(vlSymsp).mtaskBegin(taskId, " + predictStart
+ ");\n");
if (v3Global.opt.hierChild()) {
addStrStmt("VL_EXEC_TRACE_ADD_RECORD(vlSymsp).mtaskBegin(taskId, " + predictStart
+ ", \"" + v3Global.opt.topModule() + "\");\n");
} else {
addStrStmt("VL_EXEC_TRACE_ADD_RECORD(vlSymsp).mtaskBegin(taskId, " + predictStart
+ ");\n");
}
}
// Set mtask ID in the run-time system
@@ -939,10 +938,9 @@ void wrapMTaskBodies(AstExecGraph* const execGraphp) {
// Flush message queue
addStrStmt("Verilated::endOfThreadMTask(vlSymsp->__Vm_evalMsgQp);\n");
if (v3Global.opt.profExec() && mtaskp->threads() <= 1) {
const string& predictConst = std::to_string(mtaskp->cost());
addStrStmt("VL_EXEC_TRACE_ADD_RECORD(vlSymsp).mtaskEnd(taskId, " + predictConst
+ ");\n");
if (v3Global.opt.profExec()) {
const string& predictCost = std::to_string(mtaskp->cost());
addStrStmt("VL_EXEC_TRACE_ADD_RECORD(vlSymsp).mtaskEnd(" + predictCost + ");\n");
}
// AstMTask will simply contain a call