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Fix hierarchical --prof-pgo (#6213)

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This commit is contained in:
Bartłomiej Chmiel
2025-09-13 10:19:00 -04:00
committed by GitHub
parent 907047d823
commit be813e96dd
11 changed files with 110 additions and 86 deletions
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src/V3EmitCSyms.cpp
+12 -9
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@@ -491,6 +491,11 @@ void EmitCSyms::emitSymHdr() {
puts("VlExecutionProfiler* const __Vm_executionProfilerp;\n");
}
if (v3Global.opt.profPgo()) {
puts("\n// PGO PROFILING\n");
puts("VlPgoProfiler<" + std::to_string(ExecMTask::numUsedIds()) + "> _vm_pgoProfiler;\n");
}
puts("\n// MODULE INSTANCE STATE\n");
for (const auto& i : m_scopes) {
const AstScope* const scopep = i.first;
@@ -509,11 +514,6 @@ void EmitCSyms::emitSymHdr() {
puts("];\n");
}
if (v3Global.opt.profPgo()) {
puts("\n// PGO PROFILING\n");
puts("VlPgoProfiler<" + std::to_string(ExecMTask::numUsedIds()) + "> _vm_pgoProfiler;\n");
}
if (!m_scopeNames.empty()) { // Scope names
puts("\n// SCOPE NAMES\n");
for (const auto& itr : m_scopeNames) {
@@ -728,11 +728,8 @@ void EmitCSyms::emitSymImp() {
puts("#endif // VM_TRACE\n");
}
if (v3Global.opt.profPgo()) {
// Do not overwrite data during the last hierarchical stage.
const string firstHierCall
= (v3Global.opt.hierBlocks().empty() || v3Global.opt.hierChild()) ? "true" : "false";
puts("_vm_pgoProfiler.write(\"" + EmitCUtil::topClassName()
+ "\", _vm_contextp__->profVltFilename(), " + firstHierCall + ");\n");
+ "\", _vm_contextp__->profVltFilename());\n");
}
puts("}\n");
@@ -802,6 +799,9 @@ void EmitCSyms::emitSymImp() {
"__Vm_executionProfilerp{static_cast<VlExecutionProfiler*>(contextp->"
"enableExecutionProfiler(&VlExecutionProfiler::construct))}\n");
}
if (v3Global.opt.profPgo() && !v3Global.opt.libCreate().empty()) {
puts(" , _vm_pgoProfiler{" + std::to_string(v3Global.currentHierBlockCost()) + "}\n");
}
puts(" // Setup module instances\n");
for (const auto& i : m_scopes) {
@@ -835,6 +835,9 @@ void EmitCSyms::emitSymImp() {
if (v3Global.opt.profPgo()) {
puts("// Configure profiling for PGO\n");
if (!v3Global.opt.hierChild()) {
puts("_vm_pgoProfiler.writeHeader(_vm_contextp__->profVltFilename());\n");
}
if (v3Global.opt.mtasks()) {
v3Global.rootp()->topModulep()->foreach([&](const AstExecGraph* execGraphp) {
for (const V3GraphVertex& vtx : execGraphp->depGraphp()->vertices()) {