1; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
2
3; This test is based on the following code:
4;
5;void test()
6;{
7;  try {
8;    try {
9;       may_throw();
10;    } catch (int i) {
11;      try {
12;        may_throw();
13;      }
14;      catch (int j) {
15;        i = j;
16;      }
17;      handle_int(i);
18;    }
19;  } catch (float f) {
20;    handle_float(f);
21;  }
22;  done();
23;}
24
25; ModuleID = 'cppeh-nested-3.cpp'
26target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
27target triple = "x86_64-pc-windows-msvc"
28
29%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
30
31$"\01??_R0M@8" = comdat any
32
33$"\01??_R0H@8" = comdat any
34
35@"\01??_7type_info@@6B@" = external constant i8*
36@"\01??_R0M@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".M\00" }, comdat
37@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
38
39; CHECK: define void @"\01?test@@YAXXZ"()
40; CHECK: entry:
41; CHECK:   %i = alloca i32, align 4
42; CHECK:   %j = alloca i32, align 4
43; CHECK:   %f = alloca float, align 4
44; CHECK:   call void (...) @llvm.frameescape(i32* %i, float* %f, i32* %j)
45; CHECK:   invoke void @"\01?may_throw@@YAXXZ"()
46; CHECK:           to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
47
48; Function Attrs: uwtable
49define void @"\01?test@@YAXXZ"() #0 {
50entry:
51  %exn.slot = alloca i8*
52  %ehselector.slot = alloca i32
53  %i = alloca i32, align 4
54  %j = alloca i32, align 4
55  %f = alloca float, align 4
56  invoke void @"\01?may_throw@@YAXXZ"()
57          to label %invoke.cont unwind label %lpad
58
59invoke.cont:                                      ; preds = %entry
60  br label %try.cont10
61
62; CHECK: [[LPAD_LABEL]]:
63; CHECK:   landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
64; CHECK:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
65; CHECK:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
66; CHECK:   [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch", i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1")
67; CHECK:   indirectbr i8* [[RECOVER]], [label %try.cont10, label %try.cont19]
68
69lpad:                                             ; preds = %entry
70  %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
71          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
72          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
73  %1 = extractvalue { i8*, i32 } %0, 0
74  store i8* %1, i8** %exn.slot
75  %2 = extractvalue { i8*, i32 } %0, 1
76  store i32 %2, i32* %ehselector.slot
77  br label %catch.dispatch
78
79; CHECK-NOT: catch.dispatch:
80catch.dispatch:                                   ; preds = %lpad
81  %sel = load i32, i32* %ehselector.slot
82  %3 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
83  %matches = icmp eq i32 %sel, %3
84  br i1 %matches, label %catch, label %catch.dispatch11
85
86; CHECK-NOT: catch:
87catch:                                            ; preds = %catch.dispatch
88  %exn = load i8*, i8** %exn.slot
89  %4 = bitcast i32* %i to i8*
90  call void @llvm.eh.begincatch(i8* %exn, i8* %4) #3
91  invoke void @"\01?may_throw@@YAXXZ"()
92          to label %invoke.cont2 unwind label %lpad1
93
94; CHECK-NOT: invoke.cont2:
95invoke.cont2:                                     ; preds = %catch
96  br label %try.cont
97
98; CHECK-NOT: lpad1:
99lpad1:                                            ; preds = %catch
100  %5 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
101          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
102          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
103  %6 = extractvalue { i8*, i32 } %5, 0
104  store i8* %6, i8** %exn.slot
105  %7 = extractvalue { i8*, i32 } %5, 1
106  store i32 %7, i32* %ehselector.slot
107  br label %catch.dispatch3
108
109; CHECK-NOT: catch.dispatch3:
110catch.dispatch3:                                  ; preds = %lpad1
111  %sel4 = load i32, i32* %ehselector.slot
112  %8 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
113  %matches5 = icmp eq i32 %sel4, %8
114  br i1 %matches5, label %catch6, label %catch.dispatch11
115
116; CHECK-NOT: catch6:
117catch6:                                           ; preds = %catch.dispatch3
118  %exn7 = load i8*, i8** %exn.slot
119  %9 = bitcast i32* %j to i8*
120  call void @llvm.eh.begincatch(i8* %exn7, i8* %9) #3
121  %10 = load i32, i32* %j, align 4
122  store i32 %10, i32* %i, align 4
123  call void @llvm.eh.endcatch() #3
124  br label %try.cont
125
126; CHECK-NOT: try.cont:
127try.cont:                                         ; preds = %catch6, %invoke.cont2
128  %11 = load i32, i32* %i, align 4
129  invoke void @"\01?handle_int@@YAXH@Z"(i32 %11)
130          to label %invoke.cont9 unwind label %lpad8
131
132; CHECK-NOT: invoke.cont9:
133invoke.cont9:                                     ; preds = %try.cont
134  call void @llvm.eh.endcatch() #3
135  br label %try.cont10
136
137try.cont10:                                       ; preds = %invoke.cont9, %invoke.cont
138  br label %try.cont19
139
140; CHECK-NOT: lpad8:
141lpad8:                                            ; preds = %try.cont
142  %12 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
143          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
144  %13 = extractvalue { i8*, i32 } %12, 0
145  store i8* %13, i8** %exn.slot
146  %14 = extractvalue { i8*, i32 } %12, 1
147  store i32 %14, i32* %ehselector.slot
148  call void @llvm.eh.endcatch() #3
149  br label %catch.dispatch11
150
151; CHECK-NOT: catch.dispatch11:
152catch.dispatch11:                                 ; preds = %lpad8, %catch.dispatch3, %catch.dispatch
153  %sel12 = load i32, i32* %ehselector.slot
154  %15 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)) #3
155  %matches13 = icmp eq i32 %sel12, %15
156  br i1 %matches13, label %catch14, label %eh.resume
157
158; CHECK-NOT: catch14:
159catch14:                                          ; preds = %catch.dispatch11
160  %exn15 = load i8*, i8** %exn.slot
161  %16 = bitcast float* %f to i8*
162  call void @llvm.eh.begincatch(i8* %exn15, i8* %16) #3
163  %17 = load float, float* %f, align 4
164  call void @"\01?handle_float@@YAXM@Z"(float %17)
165  call void @llvm.eh.endcatch() #3
166  br label %try.cont19
167
168try.cont19:                                       ; preds = %catch14, %try.cont10
169  call void @"\01?done@@YAXXZ"()
170  ret void
171
172; CHECK-NOT: eh.resume:
173eh.resume:                                        ; preds = %lpad16, %catch.dispatch11
174  %exn20 = load i8*, i8** %exn.slot
175  %sel21 = load i32, i32* %ehselector.slot
176  %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn20, 0
177  %lpad.val22 = insertvalue { i8*, i32 } %lpad.val, i32 %sel21, 1
178  resume { i8*, i32 } %lpad.val22
179; CHECK: }
180}
181
182; CHECK: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*)
183; CHECK: entry:
184; CHECK:   [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
185; CHECK:   [[I_PTR:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
186; CHECK:   invoke void @"\01?may_throw@@YAXXZ"()
187; CHECK:           to label %invoke.cont2 unwind label %[[LPAD1_LABEL:lpad[0-9]*]]
188;
189; CHECK: invoke.cont2:                                     ; preds = %[[LPAD1_LABEL]], %entry
190; CHECK:   [[TMP1:\%.+]] = load i32, i32* [[I_PTR]], align 4
191; CHECK:   invoke void @"\01?handle_int@@YAXH@Z"(i32 [[TMP1]])
192; CHECK:           to label %invoke.cont9 unwind label %[[LPAD8_LABEL:lpad[0-9]*]]
193;
194; CHECK: [[LPAD1_LABEL]]:{{[ ]+}}; preds = %entry
195; CHECK:   [[LPAD1_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
196; CHECK:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
197; CHECK:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
198; CHECK:   [[RECOVER1:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch2", i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1")
199; CHECK:   indirectbr i8* [[RECOVER1]], [label %invoke.cont2]
200;
201; CHECK: invoke.cont9:
202; CHECK:   ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont10)
203;
204; CHECK: [[LPAD8_LABEL]]:{{[ ]+}}; preds = %invoke.cont2
205; CHECK:   [[LPAD8_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
206; CHECK:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
207; CHECK:   [[RECOVER2:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1")
208; CHECK:   indirectbr i8* [[RECOVER2]], []
209;
210; CHECK: }
211
212; CHECK: define internal i8* @"\01?test@@YAXXZ.catch1"(i8*, i8*)
213; CHECK: entry:
214; CHECK:   [[RECOVER_F:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1)
215; CHECK:   [[F_PTR:\%.+]] = bitcast i8* [[RECOVER_F]] to float*
216; CHECK:   [[TMP2:\%.+]] = load float, float* [[F_PTR]], align 4
217; CHECK:   call void @"\01?handle_float@@YAXM@Z"(float [[TMP2]])
218; CHECK:   ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont19)
219; CHECK: }
220
221; CHECK: define internal i8* @"\01?test@@YAXXZ.catch2"(i8*, i8*)
222; CHECK: entry:
223; CHECK:   [[RECOVER_J:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
224; CHECK:   [[J_PTR:\%.+]] = bitcast i8* [[RECOVER_J]] to i32*
225; CHECK:   [[RECOVER_I1:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
226; CHECK:   [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I1]] to i32*
227; CHECK:   [[TMP3:\%.+]] = load i32, i32* [[J_PTR]], align 4
228; CHECK:   store i32 [[TMP3]], i32* [[I_PTR1]]
229; CHECK:   ret i8* blockaddress(@"\01?test@@YAXXZ.catch", %invoke.cont2)
230; CHECK: }
231
232
233declare void @"\01?may_throw@@YAXXZ"() #1
234
235declare i32 @__CxxFrameHandler3(...)
236
237; Function Attrs: nounwind readnone
238declare i32 @llvm.eh.typeid.for(i8*) #2
239
240; Function Attrs: nounwind
241declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
242
243; Function Attrs: nounwind
244declare void @llvm.eh.endcatch() #3
245
246declare void @"\01?handle_int@@YAXH@Z"(i32) #1
247
248declare void @"\01?handle_float@@YAXM@Z"(float) #1
249
250declare void @"\01?done@@YAXXZ"() #1
251
252attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
253attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
254attributes #2 = { nounwind readnone }
255attributes #3 = { nounwind }
256
257!llvm.module.flags = !{!0}
258!llvm.ident = !{!1}
259
260!0 = !{i32 1, !"PIC Level", i32 2}
261!1 = !{!"clang version 3.7.0 (trunk 232069) (llvm/trunk 232070)"}
262