Add convenient overloads for CreateInsertElement and CreateExtractElement methods in IRBuilder

[chfast]

Summary

This pathc add convenient overloads for CreateInsertElement and CreateExtractElement methods in IRBuilder
where vector index can be uint64_t instead of Value*.

[majnemer]

LGTM

include/llvm/IR/IRBuilder.h

public:
   Value *CreateExtractElement(Value *Vec, Value *Idx,
                               const Twine &Name = "") {
     if (Constant *VC = dyn_cast<Constant>(Vec))
       if (Constant *IC = dyn_cast<Constant>(Idx))
         return Insert(Folder.CreateExtractElement(VC, IC), Name);
     return Insert(ExtractElementInst::Create(Vec, Idx), Name);
   }
 
+  Value *CreateExtractElement(Value *Vec, uint64_t Idx,
+                              const Twine &Name = "") {
+    return CreateExtractElement(Vec, getInt64(Idx), Name);
+  }
+
   Value *CreateInsertElement(Value *Vec, Value *NewElt, Value *Idx,
                              const Twine &Name = "") {
     if (Constant *VC = dyn_cast<Constant>(Vec))
       if (Constant *NC = dyn_cast<Constant>(NewElt))
         if (Constant *IC = dyn_cast<Constant>(Idx))
           return Insert(Folder.CreateInsertElement(VC, NC, IC), Name);
     return Insert(InsertElementInst::Create(Vec, NewElt, Idx), Name);
   }
 
+  Value *CreateInsertElement(Value *Vec, Value *NewElt, uint64_t Idx,
+                             const Twine &Name = "") {
+    return CreateInsertElement(Vec, NewElt, getInt64(Idx), Name);
+  }
+
   Value *CreateShuffleVector(Value *V1, Value *V2, Value *Mask,
                              const Twine &Name = "") {
     if (Constant *V1C = dyn_cast<Constant>(V1))
       if (Constant *V2C = dyn_cast<Constant>(V2))
         if (Constant *MC = dyn_cast<Constant>(Mask))
           return Insert(Folder.CreateShuffleVector(V1C, V2C, MC), Name);
     return Insert(new ShuffleVectorInst(V1, V2, Mask), Name);
   }

unittests/IR/IRBuilderTest.cpp

TEST_F(IRBuilderTest, DIBuilder) {
   auto BarSP = DIB.createFunction(CU, "bar", "", File, 1, Type, false, true, 1,
                                   0, true, nullptr);
   auto BadScope = DIB.createLexicalBlockFile(BarSP, File, 0);
   I->setDebugLoc(DebugLoc::get(2, 0, BadScope));
   DIB.finalize();
   EXPECT_TRUE(verifyModule(*M));
 }
 
+TEST_F(IRBuilderTest, InsertExtractElement) {
+  IRBuilder<> Builder(BB);
+
+  auto VecTy = VectorType::get(Builder.getInt64Ty(), 4);
+  auto Elt1 = Builder.getInt64(-1);
+  auto Elt2 = Builder.getInt64(-2);
+  Value *Vec = UndefValue::get(VecTy);
+  Vec = Builder.CreateInsertElement(Vec, Elt1, Builder.getInt8(1));
+  Vec = Builder.CreateInsertElement(Vec, Elt2, 2);
+  auto X1 = Builder.CreateExtractElement(Vec, 1);
+  auto X2 = Builder.CreateExtractElement(Vec, Builder.getInt32(2));
+  EXPECT_EQ(Elt1, X1);
+  EXPECT_EQ(Elt2, X2);
+}
+
 
 }