Revert "Add Constant Hoisting Pass" (r200034)

[oota-llvm.git] / lib / CodeGen / SelectionDAG / SelectionDAG.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index f163f6bdf2cb25e6178770e80c190bebecea272c..e003caeddb177231ec9896d72aadc71a08d47155 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -20,7 +20,6 @@
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
-#include "llvm/Assembly/Writer.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
@@ -6534,6 +6533,15 @@ bool BuildVectorSDNode::isConstantSplat(APInt &SplatValue,
   return true;
 }
 
+bool BuildVectorSDNode::isConstant() const {
+  for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
+    unsigned Opc = getOperand(i).getOpcode();
+    if (Opc != ISD::UNDEF && Opc != ISD::Constant && Opc != ISD::ConstantFP)
+      return false;
+  }
+  return true;
+}
+
 bool ShuffleVectorSDNode::isSplatMask(const int *Mask, EVT VT) {
   // Find the first non-undef value in the shuffle mask.
   unsigned i, e;