[llvm] r235257 - [InstCombine] Create zero constants on demand.

[Benjamin Kramer]

Author: d0k
Date: Sat Apr 18 11:52:08 2015
New Revision: 235257

URL: http://llvm.org/viewvc/llvm-project?rev=235257&view=rev
Log:
[InstCombine] Create zero constants on demand.

No functional change intended.

Modified:
    llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp

Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp?rev=235257&r1=235256&r2=235257&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp Sat Apr 18 11:52:08 2015
@@ -1770,19 +1770,17 @@ Instruction *InstCombiner::visitBitCast(
     // If the source and destination are pointers, and this cast is equivalent
     // to a getelementptr X, 0, 0, 0...  turn it into the appropriate gep.
     // This can enhance SROA and other transforms that want type-safe pointers.
-    Constant *ZeroUInt =
-      Constant::getNullValue(Type::getInt32Ty(CI.getContext()));
     unsigned NumZeros = 0;
     while (SrcElTy != DstElTy &&
            isa<CompositeType>(SrcElTy) && !SrcElTy->isPointerTy() &&
            SrcElTy->getNumContainedTypes() /* not "{}" */) {
-      SrcElTy = cast<CompositeType>(SrcElTy)->getTypeAtIndex(ZeroUInt);
+      SrcElTy = cast<CompositeType>(SrcElTy)->getTypeAtIndex(0U);
       ++NumZeros;
     }
 
     // If we found a path from the src to dest, create the getelementptr now.
     if (SrcElTy == DstElTy) {
-      SmallVector<Value*, 8> Idxs(NumZeros+1, ZeroUInt);
+      SmallVector<Value *, 8> Idxs(NumZeros + 1, Builder->getInt32(0));
       return GetElementPtrInst::CreateInBounds(Src, Idxs);
     }
   }