[llvm] r315904 - ISel type legalizer: debug messages. NFC.
Sjoerd Meijer via llvm-commits
llvm-commits at lists.llvm.org
Mon Oct 16 07:07:30 PDT 2017
Author: sjoerdmeijer
Date: Mon Oct 16 07:07:30 2017
New Revision: 315904
URL: http://llvm.org/viewvc/llvm-project?rev=315904&view=rev
Log:
ISel type legalizer: debug messages. NFC.
Minor addition and follow up of r314773 and r311533: this adds more
debug messages to the type legalizer. For each node, it dumps
legalization info for results and operands nodes, rather than just the
final legalized node.
Differential Revision: https://reviews.llvm.org/D38726
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp?rev=315904&r1=315903&r2=315904&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp Mon Oct 16 07:07:30 2017
@@ -40,8 +40,10 @@ void DAGTypeLegalizer::PromoteIntegerRes
SDValue Res = SDValue();
// See if the target wants to custom expand this node.
- if (CustomLowerNode(N, N->getValueType(ResNo), true))
+ if (CustomLowerNode(N, N->getValueType(ResNo), true)) {
+ DEBUG(dbgs() << "Node has been custom expanded, done\n");
return;
+ }
switch (N->getOpcode()) {
default:
@@ -885,8 +887,10 @@ bool DAGTypeLegalizer::PromoteIntegerOpe
DEBUG(dbgs() << "Promote integer operand: "; N->dump(&DAG); dbgs() << "\n");
SDValue Res = SDValue();
- if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false))
+ if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) {
+ DEBUG(dbgs() << "Node has been custom lowered, done\n");
return false;
+ }
switch (N->getOpcode()) {
default:
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp?rev=315904&r1=315903&r2=315904&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp Mon Oct 16 07:07:30 2017
@@ -226,15 +226,21 @@ bool DAGTypeLegalizer::run() {
assert(N->getNodeId() == ReadyToProcess &&
"Node should be ready if on worklist!");
- if (IgnoreNodeResults(N))
+ DEBUG(dbgs() << "Legalizing node: "; N->dump());
+ if (IgnoreNodeResults(N)) {
+ DEBUG(dbgs() << "Ignoring node results\n");
goto ScanOperands;
+ }
// Scan the values produced by the node, checking to see if any result
// types are illegal.
for (unsigned i = 0, NumResults = N->getNumValues(); i < NumResults; ++i) {
EVT ResultVT = N->getValueType(i);
+ DEBUG(dbgs() << "Analyzing result type: " <<
+ ResultVT.getEVTString() << "\n");
switch (getTypeAction(ResultVT)) {
case TargetLowering::TypeLegal:
+ DEBUG(dbgs() << "Legal result type\n");
break;
// The following calls must take care of *all* of the node's results,
// not just the illegal result they were passed (this includes results
@@ -291,9 +297,12 @@ ScanOperands:
if (IgnoreNodeResults(N->getOperand(i).getNode()))
continue;
- EVT OpVT = N->getOperand(i).getValueType();
+ const auto Op = N->getOperand(i);
+ DEBUG(dbgs() << "Analyzing operand: "; Op.dump());
+ EVT OpVT = Op.getValueType();
switch (getTypeAction(OpVT)) {
case TargetLowering::TypeLegal:
+ DEBUG(dbgs() << "Legal operand\n");
continue;
// The following calls must either replace all of the node's results
// using ReplaceValueWith, and return "false"; or update the node's
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