make legalize types be a command line option: -enable-legalize-types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53434 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index bc1eda3..b4b81cd 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -50,7 +50,9 @@
using namespace llvm;
static cl::opt<bool>
-EnableValueProp("enable-value-prop", cl::Hidden, cl::init(false));
+EnableValueProp("enable-value-prop", cl::Hidden);
+static cl::opt<bool>
+EnableLegalizeTypes("enable-legalize-types", cl::Hidden);
#ifndef NDEBUG
@@ -5296,10 +5298,11 @@
// Second step, hack on the DAG until it only uses operations and types that
// the target supports.
-#if 0 // Enable this some day.
- DAG.LegalizeTypes();
- // Someday even later, enable a dag combine pass here.
-#endif
+ if (EnableLegalizeTypes) {// Enable this some day.
+ DAG.LegalizeTypes();
+ // TODO: enable a dag combine pass here.
+ }
+
if (TimePassesIsEnabled) {
NamedRegionTimer T("DAG Legalization");
DAG.Legalize();