--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/llvm/test/Feature/exception.ll	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,136 @@
+; RUN: llvm-as < %s | llvm-dis > %t1.ll
+; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
+; RUN: diff %t1.ll %t2.ll
+
+@_ZTIc = external constant i8*
+@_ZTId = external constant i8*
+@_ZTIPKc = external constant i8*
+
+define void @_Z3barv() uwtable optsize ssp personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %try.cont unwind label %lpad
+
+try.cont:                                         ; preds = %entry, %invoke.cont4
+  ret void
+
+lpad:                                             ; preds = %entry
+  %exn = landingpad {i8*, i32}
+            cleanup
+            catch i8** @_ZTIc
+            filter [2 x i8**] [i8** @_ZTIPKc, i8** @_ZTId]
+  resume { i8*, i32 } %exn
+}
+
+declare void @_Z3quxv() optsize
+
+declare i32 @__gxx_personality_v0(...)
+
+define void @cleanupret0() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %exit unwind label %pad
+pad:
+  %cp = cleanuppad within none [i7 4]
+  cleanupret from %cp unwind to caller
+exit:
+  ret void
+}
+
+; forward ref by name
+define void @cleanupret1() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %exit unwind label %pad
+cleanup:
+  cleanupret from %cp unwind to caller
+pad:
+  %cp = cleanuppad within none []
+  br label %cleanup
+exit:
+  ret void
+}
+
+; forward ref by ID
+define void @cleanupret2() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %exit unwind label %pad
+cleanup:
+  cleanupret from %0 unwind to caller
+pad:
+  %0 = cleanuppad within none []
+  br label %cleanup
+exit:
+  ret void
+}
+
+define void @catchret0() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %exit unwind label %pad
+pad:
+  %cs1 = catchswitch within none [label %catch] unwind to caller
+catch:
+  %cp = catchpad within %cs1 [i7 4]
+  catchret from %cp to label %exit
+exit:
+  ret void
+}
+
+; forward ref by name
+define void @catchret1() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %exit unwind label %pad
+catchret:
+  catchret from %cp to label %exit
+pad:
+  %cs1 = catchswitch within none [label %catch] unwind to caller
+catch:
+  %cp = catchpad within %cs1 [i7 4]
+  br label %catchret
+exit:
+  ret void
+}
+
+; forward ref by ID
+define void @catchret2() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %exit unwind label %pad
+catchret:
+  catchret from %0 to label %exit
+pad:
+  %cs1 = catchswitch within none [label %catch] unwind to caller
+catch:
+  %0 = catchpad within %cs1 [i7 4]
+  br label %catchret
+exit:
+  ret void
+}
+
+define i8 @catchpad() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  invoke void @_Z3quxv() optsize
+          to label %exit unwind label %bb2
+bb2:
+  %cs1 = catchswitch within none [label %catch] unwind to caller
+catch:
+  catchpad within %cs1 [i7 4]
+  br label %exit
+exit:
+  ret i8 0
+}
+
+define void @cleanuppad() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  br label %try.cont
+
+try.cont:
+  invoke void @_Z3quxv() optsize
+          to label %try.cont unwind label %bb
+bb:
+  cleanuppad within none [i7 4]
+  ret void
+}