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In -debug mode, dump SelectionDAGs both before and after the

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optimization passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42749 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2007-10-08 15:12:17 +00:00
parent 3ab264a985
commit 417e11b9bf
1 changed files with 7 additions and 1 deletions
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8
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -4624,10 +4624,13 @@ void SelectionDAGISel::BuildSelectionDAG(SelectionDAG &DAG, BasicBlock *LLVMBB,
}
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 @@ void SelectionDAGISel::CodeGenAndEmitDAG(SelectionDAG &DAG) {
// 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