Author: lattner
Date: Sat Feb 2 20:05:04 2008
New Revision: 46672
URL: http://llvm.org/viewvc/llvm-project?rev=46672&view=rev
Log:
add a -view-legalize-types-dags option, for viewing the dags going into
legalize types.
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp?rev=46672&r1=46671&r2=46672&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp Sat Feb 2 20:05:04
2008
@@ -16,9 +16,20 @@
#include "LegalizeTypes.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/MathExtras.h"
using namespace llvm;
+#ifndef NDEBUG
+static cl::opt<bool>
+ViewLegalizeTypesDAGs("view-legalize-types-dags", cl::Hidden,
+ cl::desc("Pop up a window to show dags before legalize
types"));
+#else
+static const bool ViewLegalizeTypesDAGs = 0;
+#endif
+
+
+
/// run - This is the main entry point for the type legalizer. This does a
/// top-down traversal of the dag, legalizing types as it goes.
void DAGTypeLegalizer::run() {
@@ -438,5 +449,7 @@
/// Note that this is an involved process that may invalidate pointers into
/// the graph.
void SelectionDAG::LegalizeTypes() {
+ if (ViewLegalizeTypesDAGs) viewGraph();
+
DAGTypeLegalizer(*this).run();
}
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