[llvm-commits] [llvm] r63832 - /llvm/branches/Apple/Dib/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

[Bill Wendling]

Author: void
Date: Wed Feb  4 22:52:13 2009
New Revision: 63832

URL: http://llvm.org/viewvc/llvm-project?rev=63832&view=rev
Log:
Pull r63831 into Dib:

Fix a bug where we were not emitting a cvt rnd sat node for converting
between a unsigned integer and signed integer.

Modified:
    llvm/branches/Apple/Dib/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

Modified: llvm/branches/Apple/Dib/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/Apple/Dib/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=63832&r1=63831&r2=63832&view=diff

==============================================================================
--- llvm/branches/Apple/Dib/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/branches/Apple/Dib/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Wed Feb  4 22:52:13 2009
@@ -1178,8 +1178,10 @@
 SDValue SelectionDAG::getConvertRndSat(MVT VT, SDValue Val, SDValue DTy,
                                        SDValue STy, SDValue Rnd, SDValue Sat,
                                        ISD::CvtCode Code) {
-  // If the src and dest types are the same, no conversion is necessary.
-  if (DTy == STy)
+  // If the src and dest types are the same and the conversion is between
+  // integer types of the same sign or two floats, no conversion is necessary.
+  if (DTy == STy &&
+      (Code == ISD::CVT_UU || Code == ISD::CVT_SS || Code == ISD::CVT_FF))
     return Val;
 
   FoldingSetNodeID ID;