[SelectionDAG] Updates for -dag-dump-verbose
Summary:
This patch makes some changes related to -dag-dump-verbose.
Main use case has been when debugging how SelectionDAG is
dealing with debug info (SDDbgValue nodes).
1) We now print the number of DbgValues that are mapped to each
SDNode.
2) Removed duplicated printing of DebugLoc (nowadays DebugLoc is
printed also when not using -dag-dump-verbose).
3) Renamed SDDbgValue::dump to SDDbgValue::print, and added a
new SDDbgValue::dump that will start a new line after calling
print.
4) SDDbgValue::print now prints "Order", and it also prints
some additional information when kind is CONST/FRAMEIX/VREG.
5) SelectionDAG::dump() now dumps all SDDbgValue nodes after
the list of SDNodes (both "regular" and "ByVal" SDDbgValue:s).
Invalidated nodes are not printed.
6) Prohibit inline printing of SDNode operands that has SDDbgValue
nodes associated to them.
Reviewers: jmorse, aprantl
Reviewed By: aprantl
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D56793
llvm-svn: 351581
diff --git a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
index f7566b2..0c45db1 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
@@ -136,7 +136,8 @@
/// dbg.addr is emitted twice.
void clearIsEmitted() { Emitted = false; }
- LLVM_DUMP_METHOD void dump(raw_ostream &OS) const;
+ LLVM_DUMP_METHOD void dump() const;
+ LLVM_DUMP_METHOD void print(raw_ostream &OS) const;
};
/// Holds the information from a dbg_label node through SDISel.
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
index 43df2ab..f13f141 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
@@ -145,6 +145,8 @@
unsigned IID = cast<ConstantSDNode>(getOperand(OpNo))->getZExtValue();
if (IID < Intrinsic::num_intrinsics)
return Intrinsic::getName((Intrinsic::ID)IID, None);
+ else if (!G)
+ return "Unknown intrinsic";
else if (const TargetIntrinsicInfo *TII = G->getTarget().getIntrinsicInfo())
return TII->getName(IID);
llvm_unreachable("Invalid intrinsic ID");
@@ -684,45 +686,63 @@
if (getNodeId() != -1)
OS << " [ID=" << getNodeId() << ']';
if (!(isa<ConstantSDNode>(this) || (isa<ConstantFPSDNode>(this))))
- OS << "# D:" << isDivergent();
+ OS << " # D:" << isDivergent();
- if (!G)
- return;
-
- DILocation *L = getDebugLoc();
- if (!L)
- return;
-
- if (auto *Scope = L->getScope())
- OS << Scope->getFilename();
- else
- OS << "<unknown>";
- OS << ':' << L->getLine();
- if (unsigned C = L->getColumn())
- OS << ':' << C;
-
- for (SDDbgValue *Dbg : G->GetDbgValues(this)) {
- if (Dbg->getKind() != SDDbgValue::SDNODE || Dbg->isInvalidated())
- continue;
- Dbg->dump(OS);
- }
+ if (G && !G->GetDbgValues(this).empty()) {
+ OS << " [NoOfDbgValues=" << G->GetDbgValues(this).size() << ']';
+ for (SDDbgValue *Dbg : G->GetDbgValues(this))
+ if (!Dbg->isInvalidated())
+ Dbg->print(OS);
+ } else if (getHasDebugValue())
+ OS << " [NoOfDbgValues>0]";
}
}
-LLVM_DUMP_METHOD void SDDbgValue::dump(raw_ostream &OS) const {
- OS << " DbgVal";
- if (kind==SDNODE)
- OS << '(' << u.s.ResNo << ')';
- OS << ":\"" << Var->getName() << '"';
+LLVM_DUMP_METHOD void SDDbgValue::print(raw_ostream &OS) const {
+ OS << " DbgVal(Order=" << getOrder() << ')';
+ if (isInvalidated()) OS << "(Invalidated)";
+ if (isEmitted()) OS << "(Emitted)";
+ switch (getKind()) {
+ case SDNODE:
+ if (getSDNode())
+ OS << "(SDNODE=" << PrintNodeId(*getSDNode()) << ':' << getResNo() << ')';
+ else
+ OS << "(SDNODE)";
+ break;
+ case CONST:
+ OS << "(CONST)";
+ break;
+ case FRAMEIX:
+ OS << "(FRAMEIX=" << getFrameIx() << ')';
+ break;
+ case VREG:
+ OS << "(VREG=" << getVReg() << ')';
+ break;
+ }
+ if (isIndirect()) OS << "(Indirect)";
+ OS << ":\"" << Var->getName() << '"';
#ifndef NDEBUG
- if (Expr->getNumElements())
- Expr->dump();
+ if (Expr->getNumElements())
+ Expr->dump();
#endif
}
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD void SDDbgValue::dump() const {
+ if (isInvalidated())
+ return;
+ print(dbgs());
+ dbgs() << "\n";
+}
+#endif
+
/// Return true if this node is so simple that we should just print it inline
/// if it appears as an operand.
-static bool shouldPrintInline(const SDNode &Node) {
+static bool shouldPrintInline(const SDNode &Node, const SelectionDAG *G) {
+ // Avoid lots of cluttering when inline printing nodes with associated
+ // DbgValues in verbose mode.
+ if (VerboseDAGDumping && G && !G->GetDbgValues(&Node).empty())
+ return false;
if (Node.getOpcode() == ISD::EntryToken)
return false;
return Node.getNumOperands() == 0;
@@ -731,7 +751,7 @@
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
static void DumpNodes(const SDNode *N, unsigned indent, const SelectionDAG *G) {
for (const SDValue &Op : N->op_values()) {
- if (shouldPrintInline(*Op.getNode()))
+ if (shouldPrintInline(*Op.getNode(), G))
continue;
if (Op.getNode()->hasOneUse())
DumpNodes(Op.getNode(), indent+2, G);
@@ -748,12 +768,24 @@
I != E; ++I) {
const SDNode *N = &*I;
if (!N->hasOneUse() && N != getRoot().getNode() &&
- (!shouldPrintInline(*N) || N->use_empty()))
+ (!shouldPrintInline(*N, this) || N->use_empty()))
DumpNodes(N, 2, this);
}
if (getRoot().getNode()) DumpNodes(getRoot().getNode(), 2, this);
- dbgs() << "\n\n";
+ dbgs() << "\n";
+
+ if (VerboseDAGDumping) {
+ if (DbgBegin() != DbgEnd())
+ dbgs() << "SDDbgValues:\n";
+ for (auto *Dbg : make_range(DbgBegin(), DbgEnd()))
+ Dbg->dump();
+ if (ByvalParmDbgBegin() != ByvalParmDbgEnd())
+ dbgs() << "Byval SDDbgValues:\n";
+ for (auto *Dbg : make_range(ByvalParmDbgBegin(), ByvalParmDbgEnd()))
+ Dbg->dump();
+ }
+ dbgs() << "\n";
}
#endif
@@ -769,7 +801,7 @@
if (!Value.getNode()) {
OS << "<null>";
return false;
- } else if (shouldPrintInline(*Value.getNode())) {
+ } else if (shouldPrintInline(*Value.getNode(), G)) {
OS << Value->getOperationName(G) << ':';
Value->print_types(OS, G);
Value->print_details(OS, G);