diff --git a/llvm/test/Transforms/InstCombine/malloc-free-mismatched.ll b/llvm/test/Transforms/InstCombine/malloc-free-mismatched.ll
@@ -0,0 +1,30 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define dso_local i32 @_Z6answeri(i32 %0) {
+; CHECK-LABEL: @_Z6answeri(
+; CHECK-NEXT:    [[TMP2:%.*]] = call noalias nonnull dereferenceable(80) i8* @_Znam(i64 80) #[[ATTR1:[0-9]+]]
+; CHECK-NEXT:    call void @free(i8* [[TMP2]])
+; CHECK-NEXT:    ret i32 42
+;
+  %2 = call noalias nonnull i8* @_Znam(i64 80) #0
+  call void @free(i8* %2)
+  ret i32 42
+}
+
+; All we care about with this function is that LLVM doesn't crash
+; when optimizing it.
+define void @test_alloca() {
+  %1 = alloca i8
+  call void @free(i8* %1)
+  ret void
+}
+
+; Function Attrs: nobuiltin allocsize(0)
+declare dso_local nonnull i8* @_Znam(i64) #1
+
+; Function Attrs: nounwind
+declare dso_local void @free(i8*)
+
+attributes #0 = { builtin allocsize(0) }
+attributes #1 = { nobuiltin allocsize(0) }