1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
; RUN: not --crash llc < %s -wasm-enable-eh -enable-emscripten-sjlj -exception-model=wasm 2>&1 | FileCheck %s
target triple = "wasm32-unknown-unknown"
%struct.__jmp_buf_tag = type { [6 x i32], i32, [32 x i32] }
define void @wasm_eh_emscripten_sjlj_error() personality ptr @__gxx_wasm_personality_v0 {
entry:
%buf = alloca [1 x %struct.__jmp_buf_tag], align 16
%call = call i32 @setjmp(ptr %buf) #0
br label %bb
bb:
invoke void @foo()
to label %try.cont unwind label %catch.dispatch
catch.dispatch: ; preds = %entry
%0 = catchswitch within none [label %catch.start] unwind to caller
catch.start: ; preds = %catch.dispatch
%1 = catchpad within %0 [ptr null]
%2 = call ptr @llvm.wasm.get.exception(token %1)
%3 = call i32 @llvm.wasm.get.ehselector(token %1)
%4 = call ptr @__cxa_begin_catch(ptr %2) #2 [ "funclet"(token %1) ]
call void @__cxa_end_catch() [ "funclet"(token %1) ]
catchret from %1 to label %try.cont
try.cont: ; preds = %entry, %catch.start
ret void
}
declare void @foo()
declare i32 @__gxx_wasm_personality_v0(...)
; Function Attrs: nounwind
declare ptr @llvm.wasm.get.exception(token) #0
; Function Attrs: nounwind
declare i32 @llvm.wasm.get.ehselector(token) #0
declare ptr @__cxa_begin_catch(ptr)
declare void @__cxa_end_catch()
; Function Attrs: returns_twice
declare i32 @setjmp(ptr) #0
; Function Attrs: noreturn
declare void @longjmp(ptr, i32) #1
declare ptr @malloc(i32)
declare void @free(ptr)
attributes #0 = { returns_twice }
attributes #1 = { noreturn }
attributes #2 = { nounwind }
; CHECK: LLVM ERROR: In function wasm_eh_emscripten_sjlj_error: When using Wasm EH with Emscripten SjLj, there is a restriction that `setjmp` function call and exception cannot be used within the same function
; CHECK-NEXT: invoke void @foo()
; CHECK-NEXT: to label %try.cont unwind label %catch.dispatch
|
