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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
; RUN: llc < %s | FileCheck %s
; Test case based on this source:
; int puts(const char*);
; __declspec(noinline) void crash() {
; *(volatile int*)0 = 42;
; }
; int filt();
; void use_both() {
; __try {
; __try {
; crash();
; } __finally {
; puts("__finally");
; }
; } __except (filt()) {
; puts("__except");
; }
; }
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
$"\01??_C@_09KJEHOMHG@__finally?$AA@" = comdat any
$"\01??_C@_08MLCMLGHM@__except?$AA@" = comdat any
@"\01??_C@_09KJEHOMHG@__finally?$AA@" = linkonce_odr unnamed_addr constant [10 x i8] c"__finally\00", comdat, align 1
@"\01??_C@_08MLCMLGHM@__except?$AA@" = linkonce_odr unnamed_addr constant [9 x i8] c"__except\00", comdat, align 1
declare void @crash()
declare i32 @filt()
; Function Attrs: nounwind uwtable
define void @use_both() #1 personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*) {
entry:
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
invoke void @crash() #5
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
%0 = call i8* @llvm.localaddress()
invoke void @"\01?fin$0@0@use_both@@"(i1 zeroext false, i8* %0) #5
to label %invoke.cont2 unwind label %lpad1
invoke.cont2: ; preds = %invoke.cont
br label %__try.cont
lpad: ; preds = %entry
%1 = landingpad { i8*, i32 }
cleanup
catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_both@@" to i8*)
%2 = extractvalue { i8*, i32 } %1, 0
store i8* %2, i8** %exn.slot
%3 = extractvalue { i8*, i32 } %1, 1
store i32 %3, i32* %ehselector.slot
%4 = call i8* @llvm.localaddress()
invoke void @"\01?fin$0@0@use_both@@"(i1 zeroext true, i8* %4) #5
to label %invoke.cont3 unwind label %lpad1
lpad1: ; preds = %lpad, %invoke.cont
%5 = landingpad { i8*, i32 }
catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_both@@" to i8*)
%6 = extractvalue { i8*, i32 } %5, 0
store i8* %6, i8** %exn.slot
%7 = extractvalue { i8*, i32 } %5, 1
store i32 %7, i32* %ehselector.slot
br label %catch.dispatch
invoke.cont3: ; preds = %lpad
br label %catch.dispatch
catch.dispatch: ; preds = %invoke.cont3, %lpad1
%sel = load i32, i32* %ehselector.slot
%8 = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_both@@" to i8*)) #6
%matches = icmp eq i32 %sel, %8
br i1 %matches, label %__except, label %eh.resume
__except: ; preds = %catch.dispatch
%call = call i32 @puts(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @"\01??_C@_08MLCMLGHM@__except?$AA@", i32 0, i32 0))
br label %__try.cont
__try.cont: ; preds = %__except, %invoke.cont2
ret void
eh.resume: ; preds = %catch.dispatch
%exn = load i8*, i8** %exn.slot
%sel4 = load i32, i32* %ehselector.slot
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0
%lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %sel4, 1
resume { i8*, i32 } %lpad.val5
}
; CHECK-LABEL: use_both:
; CHECK: .Ltmp0
; CHECK: callq crash
; CHECK: .Ltmp1
; CHECK: .Ltmp3
; CHECK: callq "?fin$0@0@use_both@@"
; CHECK: .Ltmp4
; CHECK: retq
;
; CHECK: .seh_handlerdata
; CHECK-NEXT: .long 3
; CHECK-NEXT: .long .Ltmp0@IMGREL
; CHECK-NEXT: .long .Ltmp1@IMGREL+1
; CHECK-NEXT: .long "?fin$0@0@use_both@@"@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long .Ltmp0@IMGREL
; CHECK-NEXT: .long .Ltmp1@IMGREL+1
; CHECK-NEXT: .long "?filt$0@0@use_both@@"@IMGREL
; CHECK-NEXT: .long .Ltmp{{[0-9]+}}@IMGREL
; CHECK-NEXT: .long .Ltmp3@IMGREL
; CHECK-NEXT: .long .Ltmp4@IMGREL+1
; CHECK-NEXT: .long "?filt$0@0@use_both@@"@IMGREL
; CHECK-NEXT: .long .Ltmp{{[0-9]+}}@IMGREL
; Function Attrs: noinline nounwind
define internal i32 @"\01?filt$0@0@use_both@@"(i8* %exception_pointers, i8* %frame_pointer) #2 {
entry:
%frame_pointer.addr = alloca i8*, align 8
%exception_pointers.addr = alloca i8*, align 8
%exn.slot = alloca i8*
store i8* %frame_pointer, i8** %frame_pointer.addr, align 8
store i8* %exception_pointers, i8** %exception_pointers.addr, align 8
%0 = load i8*, i8** %exception_pointers.addr
%1 = bitcast i8* %0 to { i32*, i8* }*
%2 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %1, i32 0, i32 0
%3 = load i32*, i32** %2
%4 = load i32, i32* %3
%5 = zext i32 %4 to i64
%6 = inttoptr i64 %5 to i8*
store i8* %6, i8** %exn.slot
%call = call i32 @filt()
ret i32 %call
}
define internal void @"\01?fin$0@0@use_both@@"(i1 zeroext %abnormal_termination, i8* %frame_pointer) #3 {
entry:
%frame_pointer.addr = alloca i8*, align 8
%abnormal_termination.addr = alloca i8, align 1
store i8* %frame_pointer, i8** %frame_pointer.addr, align 8
%frombool = zext i1 %abnormal_termination to i8
store i8 %frombool, i8* %abnormal_termination.addr, align 1
%call = call i32 @puts(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @"\01??_C@_09KJEHOMHG@__finally?$AA@", i32 0, i32 0))
ret void
}
declare i32 @puts(i8*) #3
declare i32 @__C_specific_handler(...)
; Function Attrs: nounwind readnone
declare i8* @llvm.localaddress() #4
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*) #4
attributes #0 = { noinline nounwind 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" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind 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" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { noinline nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #4 = { nounwind readnone }
attributes #5 = { noinline }
attributes #6 = { nounwind }
|
