Merge commit '10251753b6897adcd22cc981c0cc42f348c109de' into merge-20130807

Conflicts:
	lib/Archive/ArchiveReader.cpp
	lib/Support/Unix/PathV2.inc

Change-Id: I29d8c1e321a4a380b6013f00bac6a8e4b593cc4e

1 files changed, 22 insertions, 9 deletions

diff --git a/lib/IR/Constants.cpp b/lib/IR/Constants.cpp
index d370d40..9067b34 100644
--- a/lib/IR/Constants.cpp
+++ b/lib/IR/Constants.cpp
@@ -1389,7 +1389,7 @@ void BlockAddress::replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U) {
   BasicBlock *NewBB = getBasicBlock();
 
   if (U == &Op<0>())
-    NewF = cast<Function>(To);
+    NewF = cast<Function>(To->stripPointerCasts());
   else
     NewBB = cast<BasicBlock>(To);
 
@@ -1954,14 +1954,22 @@ Constant *ConstantExpr::getShuffleVector(Constant *V1, Constant *V2,
 
 Constant *ConstantExpr::getInsertValue(Constant *Agg, Constant *Val,
                                        ArrayRef<unsigned> Idxs) {
+  assert(Agg->getType()->isFirstClassType() &&
+         "Non-first-class type for constant insertvalue expression");
+
   assert(ExtractValueInst::getIndexedType(Agg->getType(),
                                           Idxs) == Val->getType() &&
          "insertvalue indices invalid!");
-  assert(Agg->getType()->isFirstClassType() &&
-         "Non-first-class type for constant insertvalue expression");
-  Constant *FC = ConstantFoldInsertValueInstruction(Agg, Val, Idxs);
-  assert(FC && "insertvalue constant expr couldn't be folded!");
-  return FC;
+  Type *ReqTy = Val->getType();
+
+  if (Constant *FC = ConstantFoldInsertValueInstruction(Agg, Val, Idxs))
+    return FC;
+
+  Constant *ArgVec[] = { Agg, Val };
+  const ExprMapKeyType Key(Instruction::InsertValue, ArgVec, 0, 0, Idxs);
+
+  LLVMContextImpl *pImpl = Agg->getContext().pImpl;
+  return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
 }
 
 Constant *ConstantExpr::getExtractValue(Constant *Agg,
@@ -1975,9 +1983,14 @@ Constant *ConstantExpr::getExtractValue(Constant *Agg,
 
   assert(Agg->getType()->isFirstClassType() &&
          "Non-first-class type for constant extractvalue expression");
-  Constant *FC = ConstantFoldExtractValueInstruction(Agg, Idxs);
-  assert(FC && "ExtractValue constant expr couldn't be folded!");
-  return FC;
+  if (Constant *FC = ConstantFoldExtractValueInstruction(Agg, Idxs))
+    return FC;
+
+  Constant *ArgVec[] = { Agg };
+  const ExprMapKeyType Key(Instruction::ExtractValue, ArgVec, 0, 0, Idxs);
+
+  LLVMContextImpl *pImpl = Agg->getContext().pImpl;
+  return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
 }
 
 Constant *ConstantExpr::getNeg(Constant *C, bool HasNUW, bool HasNSW) {