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Add profile-guided optmization of mtasks (#3150).

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This commit is contained in:
Wilson Snyder
2021-09-26 22:51:11 -04:00
parent def7c8fe4d
commit 9029da5ab8
30 changed files with 676 additions and 20 deletions
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src/V3EmitCSyms.cpp
+36 -1
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@@ -21,6 +21,7 @@
#include "V3EmitC.h"
#include "V3EmitCBase.h"
#include "V3LanguageWords.h"
#include "V3PartitionGraph.h"
#include <algorithm>
#include <map>
@@ -394,6 +395,7 @@ void EmitCSyms::emitSymHdr() {
if (v3Global.needTraceDumper()) {
puts("#include \"" + v3Global.opt.traceSourceLang() + ".h\"\n");
}
if (v3Global.opt.profThreads()) puts("#include \"verilated_profiler.h\"\n");
puts("\n// INCLUDE MODEL CLASS\n");
puts("\n#include \"" + topClassName() + ".h\"\n");
@@ -475,6 +477,21 @@ void EmitCSyms::emitSymHdr() {
puts("];\n");
}
if (v3Global.opt.profThreads()) {
puts("\n// PROFILING\n");
vluint64_t maxProfilerId = 0;
if (v3Global.opt.mtasks()) {
for (const V3GraphVertex* vxp
= v3Global.rootp()->execGraphp()->depGraphp()->verticesBeginp();
vxp; vxp = vxp->verticesNextp()) {
ExecMTask* mtp = dynamic_cast<ExecMTask*>(const_cast<V3GraphVertex*>(vxp));
if (maxProfilerId < mtp->profilerId()) maxProfilerId = mtp->profilerId();
}
}
++maxProfilerId; // As size must include 0
puts("VerilatedProfiler<" + cvtToStr(maxProfilerId) + "> _vm_profiler;\n");
}
if (!m_scopeNames.empty()) { // Scope names
puts("\n// SCOPE NAMES\n");
for (const auto& itr : m_scopeNames) {
@@ -654,6 +671,7 @@ void EmitCSyms::emitSymImp() {
}
puts("// FUNCTIONS\n");
// Destructor
puts(symClassName() + "::~" + symClassName() + "()\n");
puts("{\n");
@@ -663,7 +681,11 @@ void EmitCSyms::emitSymImp() {
puts("if (__Vm_dumping) _traceDumpClose();\n");
puts("#endif // VM_TRACE\n");
}
if (v3Global.opt.mtasks()) { puts("delete __Vm_threadPoolp;\n"); }
if (v3Global.opt.profThreads()) {
puts("_vm_profiler.write(\"" + topClassName()
+ "\", _vm_contextp__->profVltFilename());\n");
}
if (v3Global.opt.mtasks()) puts("delete __Vm_threadPoolp;\n");
puts("}\n\n");
// Constructor
@@ -718,6 +740,19 @@ void EmitCSyms::emitSymImp() {
}
puts("{\n");
if (v3Global.opt.profThreads()) {
puts("// Configure profiling\n");
if (v3Global.opt.mtasks()) {
for (const V3GraphVertex* vxp
= v3Global.rootp()->execGraphp()->depGraphp()->verticesBeginp();
vxp; vxp = vxp->verticesNextp()) {
ExecMTask* mtp = dynamic_cast<ExecMTask*>(const_cast<V3GraphVertex*>(vxp));
puts("_vm_profiler.addCounter(" + cvtToStr(mtp->profilerId()) + ", \""
+ mtp->hashName() + "\");\n");
}
}
}
puts("// Configure time unit / time precision\n");
if (!v3Global.rootp()->timeunit().isNone()) {
puts("_vm_contextp__->timeunit(");