[llvm-commits] CVS: llvm/include/llvm/Target/TargetLowering.h

[Evan Cheng]

Changes in directory llvm/include/llvm/Target:

TargetLowering.h updated: 1.93 -> 1.94
---
Log message:

Add getTypeToExpandTo() which recursively walks TransformToType to determine
the intrinsic type to expand to.

---
Diffs of the changes:  (+20 -0)

 TargetLowering.h |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+)


Index: llvm/include/llvm/Target/TargetLowering.h
diff -u llvm/include/llvm/Target/TargetLowering.h:1.93 llvm/include/llvm/Target/TargetLowering.h:1.94
--- llvm/include/llvm/Target/TargetLowering.h:1.93	Wed Dec 13 00:12:35 2006
+++ llvm/include/llvm/Target/TargetLowering.h	Wed Dec 13 14:52:00 2006
@@ -176,6 +176,26 @@
     return TransformToType[VT];
   }
   
+  /// 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.
+  MVT::ValueType getTypeToExpandTo(MVT::ValueType VT) const {
+    while (true) {
+      switch (getTypeAction(VT)) {
+      case Legal:
+        return VT;
+      case Expand:
+        VT = TransformToType[VT];
+        break;
+      default:
+        assert(false && "Type is not legal nor is it to be expanded!");
+        return VT;
+      }
+    }
+    return VT;
+  }
+
   /// getPackedTypeBreakdown - Packed types are broken down into some number of
   /// legal first class types.  For example, <8 x float> maps to 2 MVT::v4f32
   /// with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack.