[llvm-commits] CVS: llvm/include/llvm/CodeGen/ValueTypes.h

[Dan Gohman]

Changes in directory llvm/include/llvm/CodeGen:

ValueTypes.h updated: 1.38 -> 1.39
---
Log message:

Document the encoding of MVT::ValueType.


---
Diffs of the changes:  (+6 -0)

 ValueTypes.h |    6 ++++++
 1 files changed, 6 insertions(+)


Index: llvm/include/llvm/CodeGen/ValueTypes.h
diff -u llvm/include/llvm/CodeGen/ValueTypes.h:1.38 llvm/include/llvm/CodeGen/ValueTypes.h:1.39
--- llvm/include/llvm/CodeGen/ValueTypes.h:1.38	Tue Jun 26 10:20:04 2007
+++ llvm/include/llvm/CodeGen/ValueTypes.h	Wed Jun 27 10:28:26 2007
@@ -82,6 +82,12 @@
   /// Note that simple doesn't necessary mean legal for the target machine.
   /// All legal value types must be simple, but often there are some simple
   /// value types that are not legal.
+  ///
+  /// @internal
+  /// Currently extended types are always vector types. Extended types are
+  /// encoded by having the first SimpleTypeBits bits encode the vector
+  /// element type (which must be a scalar type) and the remaining upper
+  /// bits encode the vector length, offset by one.
   typedef uint32_t ValueType;
 
   static const int SimpleTypeBits = 8;