[llvm-commits] [llvm] r47656 - /llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

[Dan Gohman]

Author: djg
Date: Tue Feb 26 19:52:30 2008
New Revision: 47656

URL: http://llvm.org/viewvc/llvm-project?rev=47656&view=rev
Log:
Teach Legalize how to expand an EXTRACT_ELEMENT.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=47656&r1=47655&r2=47656&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Tue Feb 26 19:52:30 2008
@@ -5739,6 +5739,12 @@
 #endif
     assert(0 && "Do not know how to expand this operator!");
     abort();
+  case ISD::EXTRACT_ELEMENT:
+    ExpandOp(Node->getOperand(0), Lo, Hi);
+    if (cast<ConstantSDNode>(Node->getOperand(1))->getValue())
+      return ExpandOp(Hi, Lo, Hi);
+    else
+      return ExpandOp(Lo, Lo, Hi);
   case ISD::EXTRACT_VECTOR_ELT:
     assert(VT==MVT::i64 && "Do not know how to expand this operator!");
     // ExpandEXTRACT_VECTOR_ELT tolerates invalid result types.