1 files changed, 21 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index bb4168d..da0f686 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -268,6 +268,27 @@ public:
     return MVT(MVT::Other); // Not reached
   }
 
+  /// getTypeToExpandTo - For types supported by the target, this is an
+  /// identity function.  For types that must be expanded (i.e. integer types
+  /// that are larger than the largest integer register or illegal floating
+  /// point types), this returns the largest legal type it will be expanded to.
+  EVT getTypeToExpandTo(LLVMContext &Context, EVT VT) const {
+    assert(!VT.isVector());
+    while (true) {
+      switch (getTypeAction(Context, VT)) {
+      case Legal:
+        return VT;
+      case Expand:
+        VT = getTypeToTransformTo(Context, VT);
+        break;
+      default:
+        assert(false && "Type is not legal nor is it to be expanded!");
+        return VT;
+      }
+    }
+    return VT;
+  }
+
   /// getVectorTypeBreakdown - Vector types are broken down into some number of
   /// legal first class types.  For example, EVT::v8f32 maps to 2 EVT::v4f32
   /// with Altivec or SSE1, or 8 promoted EVT::f64 values with the X86 FP stack.