[llvm-commits] [llvm] r66252 - /llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp

[Chris Lattner]

Author: lattner
Date: Thu Mar  5 23:42:30 2009
New Revision: 66252

URL: http://llvm.org/viewvc/llvm-project?rev=66252&view=rev
Log:
this wasn't intended to go in.

Modified:
    llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp?rev=66252&r1=66251&r2=66252&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp Thu Mar  5 23:42:30 2009
@@ -407,12 +407,6 @@
   return true;
 }
 
-struct APIntUnsignedOrdering {
-  bool operator()(const APInt &LHS, const APInt &RHS) const {
-    return LHS.ult(RHS);
-  }
-};
-
 /// ProcessSwitchOnDuplicateCond - We found a block and a predecessor of that
 /// block that switch on exactly the same condition.  This means that we almost
 /// always know the direction of the edge in the DESTBB:
@@ -480,34 +474,6 @@
       return true;
   }
   
-#if 0
-  // Figure out on which of the condition allow us to get to DESTBB.  If DESTBB
-  // is the default label, we compute the set of values COND is known not to be
-  // otherwise we compute the set of options that COND could be.
-  SmallVector<APInt, 16> KnownValues;
-  bool DestBBIsDefault = PredSI->getSuccessor(0) == DestBB;
-  
-  if (DestBBIsDefault) {
-    // DestBB the default case.  Collect the values where PredBB can't branch to
-    // DestBB.
-    for (unsigned i = 1/*skip default*/, e = PredSI->getNumCases(); i != e; ++i)
-      if (PredSI->getSuccessor(i) != DestBB)
-        KnownValues.push_back(PredSI->getCaseValue(i)->getValue());
-  } else {
-    // Not the default case.  Collect the values where PredBB can branch to
-    // DestBB.
-    for (unsigned i = 1/*skip default*/, e = PredSI->getNumCases(); i != e; ++i)
-      if (PredSI->getSuccessor(i) == DestBB)
-        KnownValues.push_back(PredSI->getCaseValue(i)->getValue());
-  }
-  
-  std::sort(KnownValues.begin(), KnownValues.end(), APIntUnsignedOrdering());
-  return false;
-  cerr << "\nFOUND THREAD BLOCKS:\n";
-  PredBB->dump();
-  DestBB->dump();
-#endif
-  
   return false;
 }