In -debug mode, dump SelectionDAGs both before and after the
optimization passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42749 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index ad4907d..5f32165 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -4624,10 +4624,13 @@
}
void SelectionDAGISel::CodeGenAndEmitDAG(SelectionDAG &DAG) {
+ DOUT << "Lowered selection DAG:\n";
+ DEBUG(DAG.dump());
+
// Run the DAG combiner in pre-legalize mode.
DAG.Combine(false, *AA);
- DOUT << "Lowered selection DAG:\n";
+ DOUT << "Optimized lowered selection DAG:\n";
DEBUG(DAG.dump());
// Second step, hack on the DAG until it only uses operations and types that
@@ -4640,6 +4643,9 @@
// Run the DAG combiner in post-legalize mode.
DAG.Combine(true, *AA);
+ DOUT << "Optimized legalized selection DAG:\n";
+ DEBUG(DAG.dump());
+
if (ViewISelDAGs) DAG.viewGraph();
// Third, instruction select all of the operations to machine code, adding the