1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/IR/Constants.cpp b/llvm/lib/IR/Constants.cpp
index 5dcf1ba..c182513 100644
--- a/llvm/lib/IR/Constants.cpp
+++ b/llvm/lib/IR/Constants.cpp
@@ -2068,6 +2068,17 @@ Constant *ConstantExpr::getTruncOrBitCast(Constant *C, Type *Ty) {
   return getTrunc(C, Ty);
 }
 
+Constant *ConstantExpr::getSExtOrTrunc(Constant *C, Type *Ty) {
+  assert(C->getType()->isIntOrIntVectorTy() && Ty->isIntOrIntVectorTy() &&
+         "Can only sign extend/truncate integers!");
+  Type *CTy = C->getType();
+  if (CTy->getScalarSizeInBits() < Ty->getScalarSizeInBits())
+    return getSExt(C, Ty);
+  if (CTy->getScalarSizeInBits() > Ty->getScalarSizeInBits())
+    return getTrunc(C, Ty);
+  return C;
+}
+
 Constant *ConstantExpr::getPointerCast(Constant *S, Type *Ty) {
   assert(S->getType()->isPtrOrPtrVectorTy() && "Invalid cast");
   assert((Ty->isIntOrIntVectorTy() || Ty->isPtrOrPtrVectorTy()) &&