1; RUN: opt < %s -instcombine -disable-output
2; PR2303
3	%"struct.std::ctype<char>" = type { %"struct.std::locale::facet", i32*, i8, i32*, i32*, i16*, i8, [256 x i8], [256 x i8], i8 }
4	%"struct.std::locale::facet" = type { i32 (...)**, i32 }
5
6declare i32* @_ZNSt6locale5facet15_S_get_c_localeEv()
7
8declare i32** @__ctype_toupper_loc() readnone
9
10declare i32** @__ctype_tolower_loc() readnone
11
12define void @_ZNSt5ctypeIcEC2EPiPKtbm(%"struct.std::ctype<char>"* %this, i32* %unnamed_arg, i16* %__table, i8 zeroext  %__del, i64 %__refs) personality i32 (...)* @__gxx_personality_v0 {
13entry:
14	%tmp8 = invoke i32* @_ZNSt6locale5facet15_S_get_c_localeEv( )
15			to label %invcont unwind label %lpad		; <i32*> [#uses=0]
16
17invcont:		; preds = %entry
18	%tmp32 = invoke i32** @__ctype_toupper_loc( ) readnone
19			to label %invcont31 unwind label %lpad		; <i32**> [#uses=0]
20
21invcont31:		; preds = %invcont
22	%tmp38 = invoke i32** @__ctype_tolower_loc( ) readnone
23			to label %invcont37 unwind label %lpad		; <i32**> [#uses=1]
24
25invcont37:		; preds = %invcont31
26	%tmp39 = load i32*, i32** %tmp38, align 8		; <i32*> [#uses=1]
27	%tmp41 = getelementptr %"struct.std::ctype<char>", %"struct.std::ctype<char>"* %this, i32 0, i32 4		; <i32**> [#uses=1]
28	store i32* %tmp39, i32** %tmp41, align 8
29	ret void
30
31lpad:		; preds = %invcont31, %invcont, %entry
32        %exn = landingpad {i8*, i32}
33                 cleanup
34	unreachable
35}
36
37declare i32 @__gxx_personality_v0(...)
38