1; RUN: llc < %s -enable-emscripten-cxx-exceptions | FileCheck %s --check-prefix=EH
2; RUN: llc < %s -enable-emscripten-sjlj | FileCheck %s --check-prefix=SJLJ
3; RUN: llc < %s | FileCheck %s --check-prefix=NONE
4; RUN: not --crash llc < %s -enable-emscripten-cxx-exceptions -exception-model=wasm 2>&1 | FileCheck %s --check-prefix=WASM-EH-EM-EH
5
6target triple = "wasm32-unknown-unknown"
7
8; EH: .functype  invoke_vi (i32, i32) -> ()
9; EH: .import_module  invoke_vi, env
10; EH: .import_name  invoke_vi, invoke_vi
11; EH-NOT: .functype  __invoke_void_i32
12; EH-NOT: .import_module  __invoke_void_i32
13; EH-NOT: .import_name  __invoke_void_i32
14
15; SJLJ: .functype  emscripten_longjmp (i32, i32) -> ()
16; SJLJ: .import_module  emscripten_longjmp, env
17; SJLJ: .import_name  emscripten_longjmp, emscripten_longjmp
18; SJLJ-NOT: .functype  emscripten_longjmp_jmpbuf
19; SJLJ-NOT: .import_module  emscripten_longjmp_jmpbuf
20; SJLJ-NOT: .import_name  emscripten_longjmp_jmpbuf
21
22%struct.__jmp_buf_tag = type { [6 x i32], i32, [32 x i32] }
23
24define void @exception() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
25; EH-LABEL:   type exception,@function
26; NONE-LABEL: type exception,@function
27entry:
28  invoke void @foo(i32 3)
29          to label %invoke.cont unwind label %lpad
30; EH:     call invoke_vi
31; EH-NOT: call __invoke_void_i32
32; NONE:   call foo
33
34invoke.cont:
35  invoke void @bar()
36          to label %try.cont unwind label %lpad
37; EH:     call invoke_v
38; EH-NOT: call __invoke_void
39; NONE:   call bar
40
41lpad:                                             ; preds = %entry
42  %0 = landingpad { i8*, i32 }
43          catch i8* null
44  %1 = extractvalue { i8*, i32 } %0, 0
45  %2 = extractvalue { i8*, i32 } %0, 1
46  %3 = call i8* @__cxa_begin_catch(i8* %1) #2
47  call void @__cxa_end_catch()
48  br label %try.cont
49
50try.cont:                                         ; preds = %entry, %lpad
51  ret void
52}
53
54define void @setjmp_longjmp() {
55; SJLJ-LABEL: type setjmp_longjmp,@function
56; NONE-LABEL: type setjmp_longjmp,@function
57entry:
58  %buf = alloca [1 x %struct.__jmp_buf_tag], align 16
59  %arraydecay = getelementptr inbounds [1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* %buf, i32 0, i32 0
60  %call = call i32 @setjmp(%struct.__jmp_buf_tag* %arraydecay) #0
61  %arraydecay1 = getelementptr inbounds [1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* %buf, i32 0, i32 0
62  call void @longjmp(%struct.__jmp_buf_tag* %arraydecay1, i32 1) #1
63  unreachable
64; SJLJ: call saveSetjmp
65; SJLJ: i32.const emscripten_longjmp
66; SJLJ-NOT: i32.const emscripten_longjmp_jmpbuf
67; SJLJ: call invoke_vii
68; SJLJ-NOT: call "__invoke_void_%struct.__jmp_buf_tag*_i32"
69; SJLJ: call testSetjmp
70
71; NONE: call setjmp
72; NONE: call longjmp
73}
74
75; Tests whether a user function with 'invoke_' prefix can be used
76declare void @invoke_ignoreme()
77define void @test_invoke_ignoreme() {
78; EH-LABEL:   type test_invoke_ignoreme,@function
79; SJLJ-LABEL: type test_invoke_ignoreme,@function
80entry:
81  call void @invoke_ignoreme()
82; EH:   call invoke_ignoreme
83; SJLJ: call invoke_ignoreme
84  ret void
85}
86
87declare void @foo(i32)
88declare void @bar()
89declare i32 @__gxx_personality_v0(...)
90declare i8* @__cxa_begin_catch(i8*)
91declare void @__cxa_end_catch()
92; Function Attrs: returns_twice
93declare i32 @setjmp(%struct.__jmp_buf_tag*) #0
94; Function Attrs: noreturn
95declare void @longjmp(%struct.__jmp_buf_tag*, i32) #1
96declare i8* @malloc(i32)
97declare void @free(i8*)
98
99attributes #0 = { returns_twice }
100attributes #1 = { noreturn }
101attributes #2 = { nounwind }
102
103; WASM-EH-EM-EH: LLVM ERROR: -exception-model=wasm not allowed with -enable-emscripten-cxx-exceptions
104