Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/Other/opt-twice.ll

@@ -0,0 +1,14 @@
+; The pass here doesn't matter (we use deadargelim), but test
+; that the -run-twice options exists, generates output, and
+; doesn't crash
+; RUN: opt -run-twice -deadargelim -S < %s | FileCheck %s
+
+; CHECK: define internal void @test
+define internal {} @test() {
+  ret {} undef
+}
+
+define void @caller() {
+  call {} @test()
+  ret void
+}