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1; RUN: llc -verify-machineinstrs -mtriple=i686-pc-windows-msvc < %s | FileCheck --check-prefix=X86 %s
2; RUN: llc -verify-machineinstrs -mtriple=x86_64-pc-windows-msvc < %s | FileCheck --check-prefix=X64 %s
3
4; Loosely based on IR for this C++ source code:
5;   void f(int p);
6;   int main() {
7;     try {
8;       f(1);
9;     } catch (int e) {
10;       f(e);
11;     } catch (...) {
12;       f(3);
13;     }
14;   }
15
16%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
17%eh.CatchableType = type { i32, i8*, i32, i32, i32, i32, i8* }
18%eh.CatchableTypeArray.1 = type { i32, [1 x %eh.CatchableType*] }
19%eh.ThrowInfo = type { i32, i8*, i8*, i8* }
20
21$"\01??_R0H@8" = comdat any
22
23@"\01??_7type_info@@6B@" = external constant i8*
24@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
25
26
27declare void @f(i32 %p, i32* %l)
28declare i1 @getbool()
29declare i32 @__CxxFrameHandler3(...)
30
31define i32 @try_catch_catch() personality i32 (...)* @__CxxFrameHandler3 {
32entry:
33  %e.addr = alloca i32
34  %local = alloca i32
35  invoke void @f(i32 1, i32* %local)
36          to label %try.cont unwind label %catch.dispatch
37
38catch.dispatch:                                   ; preds = %entry
39  %cs = catchswitch within none [label %handler1, label %handler2] unwind to caller
40
41handler1:
42  %h1 = catchpad within %cs [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i32* %e.addr]
43  %e = load i32, i32* %e.addr
44  call void @f(i32 %e, i32* %local) [ "funclet"(token %h1) ]
45  catchret from %h1 to label %try.cont
46
47handler2:
48  %h2 = catchpad within %cs [i8* null, i32 64, i8* null]
49  call void @f(i32 3, i32* %local) [ "funclet"(token %h2) ]
50  catchret from %h2 to label %try.cont
51
52try.cont:
53  ret i32 0
54}
55
56; X86-LABEL: _try_catch_catch:
57; X86: movl %esp, -[[sp_offset:[0-9]+]](%ebp)
58; X86: movl $0, -{{[0-9]+}}(%ebp)
59; X86: leal -[[local_offs:[0-9]+]](%ebp), %[[addr_reg:[a-z]+]]
60; X86-DAG: movl %[[addr_reg]], 4(%esp)
61; X86-DAG: movl $1, (%esp)
62; X86: calll _f
63; X86: [[contbb:LBB0_[0-9]+]]: # %try.cont
64; X86: retl
65
66; X86: [[restorebb1:LBB0_[0-9]+]]: # Block address taken
67; X86-NEXT:                        # %handler1
68; X86-NEXT: addl $12, %ebp
69; X86: jmp [[contbb]]
70
71; FIXME: These should be de-duplicated.
72; X86: [[restorebb2:LBB0_[0-9]+]]: # Block address taken
73; X86-NEXT:                        # %handler2
74; X86-NEXT: addl $12, %ebp
75; X86: jmp [[contbb]]
76
77; X86: "?catch$[[catch1bb:[0-9]+]]@?0?try_catch_catch@4HA":
78; X86: LBB0_[[catch1bb]]: # %handler1{{$}}
79; X86: pushl %ebp
80; X86: subl $8, %esp
81; X86: addl $12, %ebp
82; X86: movl %esp, -[[sp_offset]](%ebp)
83; X86-DAG: movl -32(%ebp), %[[e_reg:[a-z]+]]
84; X86-DAG: leal -[[local_offs]](%ebp), %[[addr_reg:[a-z]+]]
85; X86-DAG: movl $1, -{{[0-9]+}}(%ebp)
86; X86-DAG: movl %[[addr_reg]], 4(%esp)
87; X86-DAG: movl %[[e_reg]], (%esp)
88; X86: calll _f
89; X86-NEXT: movl $[[restorebb1]], %eax
90; X86-NEXT: addl $8, %esp
91; X86-NEXT: popl %ebp
92; X86-NEXT: retl
93
94; X86: "?catch$[[catch2bb:[0-9]+]]@?0?try_catch_catch@4HA":
95; X86: LBB0_[[catch2bb]]: # %handler2{{$}}
96; X86: pushl %ebp
97; X86: subl $8, %esp
98; X86: addl $12, %ebp
99; X86: movl %esp, -[[sp_offset]](%ebp)
100; X86-DAG: leal -[[local_offs]](%ebp), %[[addr_reg:[a-z]+]]
101; X86-DAG: movl $1, -{{[0-9]+}}(%ebp)
102; X86-DAG: movl %[[addr_reg]], 4(%esp)
103; X86-DAG: movl $3, (%esp)
104; X86: calll _f
105; X86-NEXT: movl $[[restorebb2]], %eax
106; X86-NEXT: addl $8, %esp
107; X86-NEXT: popl %ebp
108; X86-NEXT: retl
109
110; X86: L__ehtable$try_catch_catch:
111; X86: $handlerMap$0$try_catch_catch:
112; X86-NEXT:   .long   0
113; X86-NEXT:   .long   "??_R0H@8"
114; X86-NEXT:   .long   -20
115; X86-NEXT:   .long   "?catch$[[catch1bb]]@?0?try_catch_catch@4HA"
116; X86-NEXT:   .long   64
117; X86-NEXT:   .long   0
118; X86-NEXT:   .long   0
119; X86-NEXT:   .long   "?catch$[[catch2bb]]@?0?try_catch_catch@4HA"
120
121; X64-LABEL: try_catch_catch:
122; X64: Lfunc_begin0:
123; X64: pushq %rbp
124; X64: .seh_pushreg 5
125; X64: subq $48, %rsp
126; X64: .seh_stackalloc 48
127; X64: leaq 48(%rsp), %rbp
128; X64: .seh_setframe 5, 48
129; X64: .seh_endprologue
130; X64: movq $-2, -8(%rbp)
131; X64: .Ltmp0
132; X64-DAG: leaq -[[local_offs:[0-9]+]](%rbp), %rdx
133; X64-DAG: movl $1, %ecx
134; X64: callq f
135; X64: [[contbb:\.LBB0_[0-9]+]]: # Block address taken
136; X64-NEXT:                      # %try.cont
137; X64: addq $48, %rsp
138; X64: popq %rbp
139; X64: retq
140
141; X64: "?catch$[[catch1bb:[0-9]+]]@?0?try_catch_catch@4HA":
142; X64: LBB0_[[catch1bb]]: # %handler1{{$}}
143; X64: movq %rdx, 16(%rsp)
144; X64: pushq %rbp
145; X64: .seh_pushreg 5
146; X64: subq $32, %rsp
147; X64: .seh_stackalloc 32
148; X64: leaq 48(%rdx), %rbp
149; X64: .seh_endprologue
150; X64-DAG: leaq -[[local_offs]](%rbp), %rdx
151; X64-DAG: movl -12(%rbp), %ecx
152; X64: callq f
153; X64: leaq [[contbb]](%rip), %rax
154; X64-NEXT: addq $32, %rsp
155; X64-NEXT: popq %rbp
156; X64-NEXT: retq
157
158; X64: "?catch$[[catch2bb:[0-9]+]]@?0?try_catch_catch@4HA":
159; X64: LBB0_[[catch2bb]]: # %handler2{{$}}
160; X64: movq %rdx, 16(%rsp)
161; X64: pushq %rbp
162; X64: .seh_pushreg 5
163; X64: subq $32, %rsp
164; X64: .seh_stackalloc 32
165; X64: leaq 48(%rdx), %rbp
166; X64: .seh_endprologue
167; X64-DAG: leaq -[[local_offs]](%rbp), %rdx
168; X64-DAG: movl $3, %ecx
169; X64: callq f
170; X64: leaq [[contbb]](%rip), %rax
171; X64-NEXT: addq $32, %rsp
172; X64-NEXT: popq %rbp
173; X64-NEXT: retq
174
175; X64: $cppxdata$try_catch_catch:
176; X64-NEXT: .long   429065506
177; X64-NEXT: .long   2
178; X64-NEXT: .long   ($stateUnwindMap$try_catch_catch)@IMGREL
179; X64-NEXT: .long   1
180; X64-NEXT: .long   ($tryMap$try_catch_catch)@IMGREL
181; X64-NEXT: .long   5
182; X64-NEXT: .long   ($ip2state$try_catch_catch)@IMGREL
183; X64-NEXT: .long   40
184; X64-NEXT: .long   0
185; X64-NEXT: .long   1
186
187; X64: $tryMap$try_catch_catch:
188; X64-NEXT: .long   0
189; X64-NEXT: .long   0
190; X64-NEXT: .long   1
191; X64-NEXT: .long   2
192; X64-NEXT: .long   ($handlerMap$0$try_catch_catch)@IMGREL
193
194; X64: $handlerMap$0$try_catch_catch:
195; X64-NEXT:   .long   0
196; X64-NEXT:   .long   "??_R0H@8"@IMGREL
197; X64-NEXT:   .long   36
198; X64-NEXT:   .long   "?catch$[[catch1bb]]@?0?try_catch_catch@4HA"@IMGREL
199; X64-NEXT:   .long   56
200; X64-NEXT:   .long   64
201; X64-NEXT:   .long   0
202; X64-NEXT:   .long   0
203; X64-NEXT:   .long   "?catch$[[catch2bb]]@?0?try_catch_catch@4HA"@IMGREL
204; X64-NEXT:   .long   56
205
206; X64: $ip2state$try_catch_catch:
207; X64-NEXT: .long   .Lfunc_begin0@IMGREL
208; X64-NEXT: .long   -1
209; X64-NEXT: .long   .Ltmp0@IMGREL+1
210; X64-NEXT: .long   0
211; X64-NEXT: .long   .Ltmp1@IMGREL+1
212; X64-NEXT: .long   -1
213; X64-NEXT: .long   "?catch$[[catch1bb]]@?0?try_catch_catch@4HA"@IMGREL
214; X64-NEXT: .long   1
215; X64-NEXT: .long   "?catch$[[catch2bb]]@?0?try_catch_catch@4HA"@IMGREL
216; X64-NEXT: .long   1
217
218
219define i32 @branch_to_normal_dest() personality i32 (...)* @__CxxFrameHandler3 {
220entry:
221  invoke void @f(i32 1, i32* null)
222          to label %try.cont unwind label %catch.dispatch
223
224catch.dispatch:
225  %cs1 = catchswitch within none [label %catch] unwind to caller
226
227catch:
228  %cp1 = catchpad within %cs1 [i8* null, i32 64, i8* null]
229  br label %loop
230
231loop:
232  %V = call i1 @getbool() [ "funclet"(token %cp1) ]
233  br i1 %V, label %loop, label %catch.done
234
235catch.done:
236  catchret from %cp1 to label %try.cont
237
238try.cont:
239  ret i32 0
240}
241
242; X86-LABEL: _branch_to_normal_dest:
243; X86: calll _f
244
245; X86: [[contbb:LBB1_[0-9]+]]: # %try.cont
246; X86: retl
247
248; X86: [[restorebb:LBB1_[0-9]+]]: # Block address taken
249; X86-NEXT:                       # %catch.done
250; X86-NEXT: addl $12, %ebp
251; X86: jmp [[contbb]]
252
253; X86: "?catch$[[catchbb:[0-9]+]]@?0?branch_to_normal_dest@4HA":
254; X86: LBB1_[[catchbb]]: # %catch{{$}}
255; X86: pushl %ebp
256; X86: subl $8, %esp
257; X86: addl $12, %ebp
258; X86: LBB1_[[loopbb:[0-9]+]]: # %loop
259; X86: movl    $1, -16(%ebp)
260; X86: calll   _getbool
261; X86: testb   $1, %al
262; X86: jne LBB1_[[loopbb]]
263; X86: # %catch.done
264; X86-NEXT: movl $[[restorebb]], %eax
265; X86-NEXT: addl $8, %esp
266; X86-NEXT: popl %ebp
267; X86-NEXT: retl
268
269; X86: L__ehtable$branch_to_normal_dest:
270; X86: $handlerMap$0$branch_to_normal_dest:
271; X86-NEXT:   .long   64
272; X86-NEXT:   .long   0
273; X86-NEXT:   .long   0
274; X86-NEXT:   .long   "?catch$[[catchbb]]@?0?branch_to_normal_dest@4HA"
275
276; X64-LABEL: branch_to_normal_dest:
277; X64: # %entry
278; X64: pushq %rbp
279; X64: .seh_pushreg 5
280; X64: subq $48, %rsp
281; X64: .seh_stackalloc 48
282; X64: leaq 48(%rsp), %rbp
283; X64: .seh_setframe 5, 48
284; X64: .seh_endprologue
285; X64: .Ltmp[[before_call:[0-9]+]]:
286; X64: callq f
287; X64: .Ltmp[[after_call:[0-9]+]]:
288; X64: [[contbb:\.LBB1_[0-9]+]]: # Block address taken
289; X64-NEXT:                      # %try.cont
290; X64: addq $48, %rsp
291; X64: popq %rbp
292; X64: retq
293
294; X64: "?catch$[[catchbb:[0-9]+]]@?0?branch_to_normal_dest@4HA":
295; X64: LBB1_[[catchbb]]: # %catch{{$}}
296; X64: movq %rdx, 16(%rsp)
297; X64: pushq %rbp
298; X64: .seh_pushreg 5
299; X64: subq $32, %rsp
300; X64: .seh_stackalloc 32
301; X64: leaq 48(%rdx), %rbp
302; X64: .seh_endprologue
303; X64: .LBB1_[[normal_dest_bb:[0-9]+]]: # %loop
304; X64: callq   getbool
305; X64: testb   $1, %al
306; X64: jne     .LBB1_[[normal_dest_bb]]
307; X64: # %catch.done
308; X64: leaq [[contbb]](%rip), %rax
309; X64-NEXT: addq $32, %rsp
310; X64-NEXT: popq %rbp
311; X64-NEXT: retq
312
313; X64-LABEL: $cppxdata$branch_to_normal_dest:
314; X64-NEXT: .long   429065506
315; X64-NEXT: .long   2
316; X64-NEXT: .long   ($stateUnwindMap$branch_to_normal_dest)@IMGREL
317; X64-NEXT: .long   1
318; X64-NEXT: .long   ($tryMap$branch_to_normal_dest)@IMGREL
319; X64-NEXT: .long   4
320; X64-NEXT: .long   ($ip2state$branch_to_normal_dest)@IMGREL
321; X64-NEXT: .long   40
322; X64-NEXT: .long   0
323; X64-NEXT: .long   1
324
325; X64-LABEL: $stateUnwindMap$branch_to_normal_dest:
326; X64-NEXT: .long   -1
327; X64-NEXT: .long   0
328; X64-NEXT: .long   -1
329; X64-NEXT: .long   0
330
331; X64-LABEL: $tryMap$branch_to_normal_dest:
332; X64-NEXT: .long   0
333; X64-NEXT: .long   0
334; X64-NEXT: .long   1
335; X64-NEXT: .long   1
336; X64-NEXT: .long   ($handlerMap$0$branch_to_normal_dest)@IMGREL
337
338; X64-LABEL: $handlerMap$0$branch_to_normal_dest:
339; X64-NEXT: .long   64
340; X64-NEXT: .long   0
341; X64-NEXT: .long   0
342; X64-NEXT: .long   "?catch$[[catchbb]]@?0?branch_to_normal_dest@4HA"@IMGREL
343; X64-NEXT: .long   56
344
345; X64-LABEL: $ip2state$branch_to_normal_dest:
346; X64-NEXT: .long   .Lfunc_begin1@IMGREL
347; X64-NEXT: .long   -1
348; X64-NEXT: .long   .Ltmp[[before_call]]@IMGREL+1
349; X64-NEXT: .long   0
350; X64-NEXT: .long   .Ltmp[[after_call]]@IMGREL+1
351; X64-NEXT: .long   -1
352; X64-NEXT: .long   "?catch$[[catchbb]]@?0?branch_to_normal_dest@4HA"@IMGREL
353; X64-NEXT: .long   1
354