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 -mtriple=wasm64-unknown-unknown 2>&1 | FileCheck %s --check-prefix=WASM64-EH
5; RUN: not --crash llc < %s -enable-emscripten-sjlj -mtriple=wasm64-unknown-unknown 2>&1 | FileCheck %s --check-prefix=WASM64-SJLJ
6; RUN: not --crash llc < %s -enable-emscripten-cxx-exceptions -exception-model=wasm 2>&1 | FileCheck %s --check-prefix=WASM-EH-EM-EH
7
8target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
9target triple = "wasm32-unknown-unknown"
10
11%struct.__jmp_buf_tag = type { [6 x i32], i32, [32 x i32] }
12
13define void @exception() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
14; EH-LABEL:   type exception,@function
15; NONE-LABEL: type exception,@function
16entry:
17  invoke void @foo(i32 3)
18          to label %invoke.cont unwind label %lpad
19; EH:     call invoke_vi
20; EH-NOT: call __invoke_void_i32
21; NONE:   call foo
22
23invoke.cont:
24  invoke void @bar()
25          to label %try.cont unwind label %lpad
26; EH:     call invoke_v
27; EH-NOT: call __invoke_void
28; NONE:   call bar
29
30lpad:                                             ; preds = %entry
31  %0 = landingpad { i8*, i32 }
32          catch i8* null
33  %1 = extractvalue { i8*, i32 } %0, 0
34  %2 = extractvalue { i8*, i32 } %0, 1
35  %3 = call i8* @__cxa_begin_catch(i8* %1) #2
36  call void @__cxa_end_catch()
37  br label %try.cont
38
39try.cont:                                         ; preds = %entry, %lpad
40  ret void
41}
42
43define void @setjmp_longjmp() {
44; SJLJ-LABEL: type setjmp_longjmp,@function
45; NONE-LABEL: type setjmp_longjmp,@function
46entry:
47  %buf = alloca [1 x %struct.__jmp_buf_tag], align 16
48  %arraydecay = getelementptr inbounds [1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* %buf, i32 0, i32 0
49  %call = call i32 @setjmp(%struct.__jmp_buf_tag* %arraydecay) #0
50  %arraydecay1 = getelementptr inbounds [1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* %buf, i32 0, i32 0
51  call void @longjmp(%struct.__jmp_buf_tag* %arraydecay1, i32 1) #1
52  unreachable
53; SJLJ: call saveSetjmp
54; SJLJ: i32.const emscripten_longjmp
55; SJLJ-NOT: i32.const emscripten_longjmp_jmpbuf
56; SJLJ: call invoke_vii
57; SJLJ-NOT: call "__invoke_void_%struct.__jmp_buf_tag*_i32"
58; SJLJ: call testSetjmp
59
60; NONE: call setjmp
61; NONE: call longjmp
62}
63
64; Tests whether a user function with 'invoke_' prefix can be used
65declare void @invoke_ignoreme()
66define void @test_invoke_ignoreme() {
67; EH-LABEL:   type test_invoke_ignoreme,@function
68; SJLJ-LABEL: type test_invoke_ignoreme,@function
69entry:
70  call void @invoke_ignoreme()
71; EH:   call invoke_ignoreme
72; SJLJ: call invoke_ignoreme
73  ret void
74}
75
76declare void @foo(i32)
77declare void @bar()
78declare i32 @__gxx_personality_v0(...)
79declare i8* @__cxa_begin_catch(i8*)
80declare void @__cxa_end_catch()
81; Function Attrs: returns_twice
82declare i32 @setjmp(%struct.__jmp_buf_tag*) #0
83; Function Attrs: noreturn
84declare void @longjmp(%struct.__jmp_buf_tag*, i32) #1
85declare i8* @malloc(i32)
86declare void @free(i8*)
87
88attributes #0 = { returns_twice }
89attributes #1 = { noreturn }
90attributes #2 = { nounwind }
91
92; EH: .functype  invoke_vi (i32, i32) -> ()
93; EH: .import_module  invoke_vi, env
94; EH: .import_name  invoke_vi, invoke_vi
95; EH-NOT: .functype  __invoke_void_i32
96; EH-NOT: .import_module  __invoke_void_i32
97; EH-NOT: .import_name  __invoke_void_i32
98
99; SJLJ: .functype  emscripten_longjmp (i32, i32) -> ()
100; SJLJ: .import_module  emscripten_longjmp, env
101; SJLJ: .import_name  emscripten_longjmp, emscripten_longjmp
102; SJLJ-NOT: .functype  emscripten_longjmp_jmpbuf
103; SJLJ-NOT: .import_module  emscripten_longjmp_jmpbuf
104; SJLJ-NOT: .import_name  emscripten_longjmp_jmpbuf
105
106; WASM64-EH: LLVM ERROR: Emscripten EH/SjLj is not supported with wasm64 yet
107; WASM64-SJLJ: LLVM ERROR: Emscripten EH/SjLj is not supported with wasm64 yet
108; WASM-EH-EM-EH: LLVM ERROR: -exception-model=wasm not allowed with -enable-emscripten-cxx-exceptions
109