[IR] Reintroduce getGEPReturnType(), it will be used in a later patch.

llvm-svn: 285365

2 files changed, 20 insertions, 0 deletions

diff --git a/llvm/include/llvm/IR/Instructions.h b/llvm/include/llvm/IR/Instructions.h
index b3ad55bf308..0afbaccd8b5 100644
--- a/llvm/include/llvm/IR/Instructions.h
+++ b/llvm/include/llvm/IR/Instructions.h
@@ -959,6 +959,11 @@ public:
 
   /// Returns the pointer type returned by the GEP
   /// instruction, which may be a vector of pointers.
+  static Type *getGEPReturnType(Value *Ptr, ArrayRef<Value *> IdxList) {
+    return getGEPReturnType(
+      cast<PointerType>(Ptr->getType()->getScalarType())->getElementType(),
+      Ptr, IdxList);
+  }
   static Type *getGEPReturnType(Type *ElTy, Value *Ptr,
                                 ArrayRef<Value *> IdxList) {
     Type *PtrTy = PointerType::get(checkGEPType(getIndexedType(ElTy, IdxList)),
diff --git a/llvm/test/Transforms/InstCombine/gep-vector.ll b/llvm/test/Transforms/InstCombine/gep-vector.ll
new file mode 100644
index 00000000000..ce021bf207f
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/gep-vector.ll
@@ -0,0 +1,15 @@
+; RUN: opt -instcombine %s -S | FileCheck %s
+
+; CHECK-LABEL: patatino
+; CHECK-NEXT: ret <8 x i64*> undef
+define <8 x i64*> @patatino() {
+  %el = getelementptr i64, <8 x i64*> undef, <8 x i64> undef
+  ret <8 x i64*> %el
+}
+
+; CHECK-LABEL: patatino2
+; CHECK-NEXT: ret <8 x i64*> undef
+define <8 x i64*> @patatino2() {
+  %el = getelementptr inbounds i64, i64* undef, <8 x i64> undef
+  ret <8 x i64*> %el
+}