Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/Transforms/ADCE/dce_pure_invoke.ll

@@ -0,0 +1,19 @@
+; RUN: opt < %s -adce -S | grep null
+
+declare i32 @strlen(i8*) readnone
+
+define i32 @test() personality i32 (...)* @__gxx_personality_v0 {
+	; invoke of pure function should not be deleted!
+	invoke i32 @strlen( i8* null ) readnone
+			to label %Cont unwind label %Other		; <i32>:1 [#uses=0]
+
+Cont:		; preds = %0
+	ret i32 0
+
+Other:		; preds = %0
+         %exn = landingpad {i8*, i32}
+                  cleanup
+	ret i32 1
+}
+
+declare i32 @__gxx_personality_v0(...)