1 files changed, 16 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp
index c1f3a30..e652abb 100644
--- a/clang/lib/CodeGen/CodeGenFunction.cpp
+++ b/clang/lib/CodeGen/CodeGenFunction.cpp
@@ -2765,3 +2765,19 @@ CodeGenFunction::emitCondLikelihoodViaExpectIntrinsic(llvm::Value *Cond,
   }
   llvm_unreachable("Unknown Likelihood");
 }
+
+llvm::Value *CodeGenFunction::emitBoolVecConversion(llvm::Value *SrcVec,
+                                                    unsigned NumElementsDst,
+                                                    const llvm::Twine &Name) {
+  auto *SrcTy = cast<llvm::FixedVectorType>(SrcVec->getType());
+  unsigned NumElementsSrc = SrcTy->getNumElements();
+  if (NumElementsSrc == NumElementsDst)
+    return SrcVec;
+
+  std::vector<int> ShuffleMask(NumElementsDst, -1);
+  for (unsigned MaskIdx = 0;
+       MaskIdx < std::min<>(NumElementsDst, NumElementsSrc); ++MaskIdx)
+    ShuffleMask[MaskIdx] = MaskIdx;
+
+  return Builder.CreateShuffleVector(SrcVec, ShuffleMask, Name);
+}