1; RUN: opt < %s -wasm-lower-em-ehsjlj -S | FileCheck %s
2
3target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
4target triple = "wasm32-unknown-unknown"
5
6@_ZTIi = external constant i8*
7@_ZTIc = external constant i8*
8; CHECK-DAG: __THREW__ = external global i32
9; CHECK-DAG: __threwValue = external global i32
10
11; Test invoke instruction with clauses (try-catch block)
12define void @clause() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
13; CHECK-LABEL: @clause(
14entry:
15  invoke void @foo(i32 3)
16          to label %invoke.cont unwind label %lpad
17; CHECK: entry:
18; CHECK-NEXT: store i32 0, i32* @__THREW__
19; CHECK-NEXT: call cc{{.*}} void @__invoke_void_i32(void (i32)* @foo, i32 3)
20; CHECK-NEXT: %[[__THREW__VAL:.*]] = load i32, i32* @__THREW__
21; CHECK-NEXT: store i32 0, i32* @__THREW__
22; CHECK-NEXT: %cmp = icmp eq i32 %[[__THREW__VAL]], 1
23; CHECK-NEXT: br i1 %cmp, label %lpad, label %invoke.cont
24
25invoke.cont:                                      ; preds = %entry
26  br label %try.cont
27
28lpad:                                             ; preds = %entry
29  %0 = landingpad { i8*, i32 }
30          catch i8* bitcast (i8** @_ZTIi to i8*)
31          catch i8* null
32  %1 = extractvalue { i8*, i32 } %0, 0
33  %2 = extractvalue { i8*, i32 } %0, 1
34  br label %catch.dispatch
35; CHECK: lpad:
36; CHECK-NEXT: %[[FMC:.*]] = call i8* @__cxa_find_matching_catch_4(i8* bitcast (i8** @_ZTIi to i8*), i8* null)
37; CHECK-NEXT: %[[IVI1:.*]] = insertvalue { i8*, i32 } undef, i8* %[[FMC]], 0
38; CHECK-NEXT: %[[TEMPRET0_VAL:.*]] = call i32 @getTempRet0()
39; CHECK-NEXT: %[[IVI2:.*]] = insertvalue { i8*, i32 } %[[IVI1]], i32 %[[TEMPRET0_VAL]], 1
40; CHECK-NEXT: extractvalue { i8*, i32 } %[[IVI2]], 0
41; CHECK-NEXT: %[[CDR:.*]] = extractvalue { i8*, i32 } %[[IVI2]], 1
42
43catch.dispatch:                                   ; preds = %lpad
44  %3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
45  %matches = icmp eq i32 %2, %3
46  br i1 %matches, label %catch1, label %catch
47; CHECK: catch.dispatch:
48; CHECK-NEXT: %[[TYPEID:.*]] = call i32 @llvm_eh_typeid_for(i8* bitcast (i8** @_ZTIi to i8*))
49; CHECK-NEXT: %matches = icmp eq i32 %[[CDR]], %[[TYPEID]]
50
51catch1:                                           ; preds = %catch.dispatch
52  %4 = call i8* @__cxa_begin_catch(i8* %1)
53  %5 = bitcast i8* %4 to i32*
54  %6 = load i32, i32* %5, align 4
55  call void @__cxa_end_catch()
56  br label %try.cont
57
58try.cont:                                         ; preds = %catch, %catch1, %invoke.cont
59  ret void
60
61catch:                                            ; preds = %catch.dispatch
62  %7 = call i8* @__cxa_begin_catch(i8* %1)
63  call void @__cxa_end_catch()
64  br label %try.cont
65}
66
67; Test invoke instruction with filters (functions with throw(...) declaration)
68define void @filter() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
69; CHECK-LABEL: @filter(
70entry:
71  invoke void @foo(i32 3)
72          to label %invoke.cont unwind label %lpad
73; CHECK: entry:
74; CHECK-NEXT: store i32 0, i32* @__THREW__
75; CHECK-NEXT: call cc{{.*}} void @__invoke_void_i32(void (i32)* @foo, i32 3)
76; CHECK-NEXT: %[[__THREW__VAL:.*]] = load i32, i32* @__THREW__
77; CHECK-NEXT: store i32 0, i32* @__THREW__
78; CHECK-NEXT: %cmp = icmp eq i32 %[[__THREW__VAL]], 1
79; CHECK-NEXT: br i1 %cmp, label %lpad, label %invoke.cont
80
81invoke.cont:                                      ; preds = %entry
82  ret void
83
84lpad:                                             ; preds = %entry
85  %0 = landingpad { i8*, i32 }
86          filter [2 x i8*] [i8* bitcast (i8** @_ZTIi to i8*), i8* bitcast (i8** @_ZTIc to i8*)]
87  %1 = extractvalue { i8*, i32 } %0, 0
88  %2 = extractvalue { i8*, i32 } %0, 1
89  br label %filter.dispatch
90; CHECK: lpad:
91; CHECK-NEXT: %[[FMC:.*]] = call i8* @__cxa_find_matching_catch_4(i8* bitcast (i8** @_ZTIi to i8*), i8* bitcast (i8** @_ZTIc to i8*))
92; CHECK-NEXT: %[[IVI1:.*]] = insertvalue { i8*, i32 } undef, i8* %[[FMC]], 0
93; CHECK-NEXT: %[[TEMPRET0_VAL:.*]] = call i32 @getTempRet0()
94; CHECK-NEXT: %[[IVI2:.*]] = insertvalue { i8*, i32 } %[[IVI1]], i32 %[[TEMPRET0_VAL]], 1
95; CHECK-NEXT: extractvalue { i8*, i32 } %[[IVI2]], 0
96; CHECK-NEXT: extractvalue { i8*, i32 } %[[IVI2]], 1
97
98filter.dispatch:                                  ; preds = %lpad
99  %ehspec.fails = icmp slt i32 %2, 0
100  br i1 %ehspec.fails, label %ehspec.unexpected, label %eh.resume
101
102ehspec.unexpected:                                ; preds = %filter.dispatch
103  call void @__cxa_call_unexpected(i8* %1) #4
104  unreachable
105
106eh.resume:                                        ; preds = %filter.dispatch
107  %lpad.val = insertvalue { i8*, i32 } undef, i8* %1, 0
108  %lpad.val3 = insertvalue { i8*, i32 } %lpad.val, i32 %2, 1
109  resume { i8*, i32 } %lpad.val3
110; CHECK: eh.resume:
111; CHECK-NEXT: insertvalue
112; CHECK-NEXT: %[[LPAD_VAL:.*]] = insertvalue
113; CHECK-NEXT: %[[LOW:.*]] = extractvalue { i8*, i32 } %[[LPAD_VAL]], 0
114; CHECK-NEXT: call void @__resumeException(i8* %[[LOW]])
115; CHECK-NEXT: unreachable
116}
117
118; Test if argument attributes indices in newly created call instructions are correct
119define void @arg_attributes() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
120; CHECK-LABEL: @arg_attributes(
121entry:
122  %0 = invoke noalias i8* @bar(i8 signext 1, i8 zeroext 2)
123          to label %invoke.cont unwind label %lpad
124; CHECK: entry:
125; CHECK-NEXT: store i32 0, i32* @__THREW__
126; CHECK-NEXT: %0 = call cc{{.*}} noalias i8* @"__invoke_i8*_i8_i8"(i8* (i8, i8)* @bar, i8 signext 1, i8 zeroext 2)
127
128invoke.cont:                                      ; preds = %entry
129  br label %try.cont
130
131lpad:                                             ; preds = %entry
132  %1 = landingpad { i8*, i32 }
133          catch i8* bitcast (i8** @_ZTIi to i8*)
134          catch i8* null
135  %2 = extractvalue { i8*, i32 } %1, 0
136  %3 = extractvalue { i8*, i32 } %1, 1
137  br label %catch.dispatch
138
139catch.dispatch:                                   ; preds = %lpad
140  %4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
141  %matches = icmp eq i32 %3, %4
142  br i1 %matches, label %catch1, label %catch
143
144catch1:                                           ; preds = %catch.dispatch
145  %5 = call i8* @__cxa_begin_catch(i8* %2)
146  %6 = bitcast i8* %5 to i32*
147  %7 = load i32, i32* %6, align 4
148  call void @__cxa_end_catch()
149  br label %try.cont
150
151try.cont:                                         ; preds = %catch, %catch1, %invoke.cont
152  ret void
153
154catch:                                            ; preds = %catch.dispatch
155  %8 = call i8* @__cxa_begin_catch(i8* %2)
156  call void @__cxa_end_catch()
157  br label %try.cont
158}
159
160declare void @foo(i32)
161declare i8* @bar(i8, i8)
162
163declare i32 @__gxx_personality_v0(...)
164declare i32 @llvm.eh.typeid.for(i8*)
165declare i8* @__cxa_begin_catch(i8*)
166declare void @__cxa_end_catch()
167declare void @__cxa_call_unexpected(i8*)
168
169; JS glue functions and invoke wrappers declaration
170; CHECK-DAG: declare i32 @getTempRet0()
171; CHECK-DAG: declare void @setTempRet0(i32)
172; CHECK-DAG: declare void @__resumeException(i8*)
173; CHECK-DAG: declare void @__invoke_void_i32(void (i32)*, i32)
174; CHECK-DAG: declare i8* @__cxa_find_matching_catch_4(i8*, i8*)
175