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
|
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s --check-prefix=X64
; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s --check-prefix=X86
declare void @throw()
declare i32 @__CxxFrameHandler3(...)
declare void @llvm.trap()
define void @test1() personality ptr @__CxxFrameHandler3 {
entry:
%alloca2 = alloca ptr, align 4
%alloca1 = alloca ptr, align 4
store volatile ptr null, ptr %alloca1
invoke void @throw()
to label %unreachable unwind label %catch.dispatch
; X64-LABEL: test1:
; X64: movq $0, -8(%rbp)
; X64: callq throw
; X86-LABEL: _test1:
; X86: pushl %ebp
; X86: movl %esp, %ebp
; X86: pushl %ebx
; X86: pushl %edi
; X86: pushl %esi
; X86: subl $20, %esp
; X86: movl $0, -32(%ebp)
; X86: calll _throw
catch.dispatch: ; preds = %entry
%cs = catchswitch within none [label %catch.pad] unwind to caller
catch.pad: ; preds = %catch.dispatch
%cp = catchpad within %cs [ptr null, i32 0, ptr %alloca1]
%v = load volatile ptr, ptr %alloca1
store volatile ptr null, ptr %alloca1
call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %alloca1)
call void @llvm.lifetime.start.p0(i64 4, ptr %alloca2)
store volatile ptr null, ptr %alloca1
call void @llvm.trap()
unreachable
; X64-LABEL: "?catch$2@?0?test1@4HA"
; X64: movq $0, -8(%rbp)
; X64: movq $0, -8(%rbp)
; X64: ud2
; X86-LABEL: "?catch$2@?0?test1@4HA"
; X86: movl $0, -32(%ebp)
; X86: movl $0, -32(%ebp)
; X86: ud2
unreachable: ; preds = %entry
unreachable
}
; X64-LABEL: $cppxdata$test1:
; X64: .long 40 # CatchObjOffset
; -20 is difference between the end of the EH reg node stack object and the
; catch object at EBP -32.
; X86-LABEL: L__ehtable$test1:
; X86: .long -20 # CatchObjOffset
define void @test2() personality ptr @__CxxFrameHandler3 {
entry:
%alloca2 = alloca ptr, align 4
%alloca1 = alloca ptr, align 4
store volatile ptr null, ptr %alloca1
invoke void @throw()
to label %unreachable unwind label %catch.dispatch
; X64-LABEL: test2:
; X64: movq $0, -16(%rbp)
; X64: callq throw
; X86-LABEL: _test2:
; X86: movl $0, -32(%ebp)
; X86: calll _throw
catch.dispatch: ; preds = %entry
%cs = catchswitch within none [label %catch.pad] unwind to caller
catch.pad: ; preds = %catch.dispatch
%cp = catchpad within %cs [ptr null, i32 0, ptr null]
store volatile ptr null, ptr %alloca1
call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %alloca1)
call void @llvm.lifetime.start.p0(i64 4, ptr %alloca2)
store volatile ptr null, ptr %alloca1
call void @llvm.trap()
unreachable
; X64-LABEL: "?catch$2@?0?test2@4HA"
; X64: movq $0, -16(%rbp)
; X64: movq $0, -16(%rbp)
; X64: ud2
; X86-LABEL: "?catch$2@?0?test2@4HA"
; X86: movl $0, -32(%ebp)
; X86: movl $0, -32(%ebp)
; X86: ud2
unreachable: ; preds = %entry
unreachable
}
; X64-LABEL: $cppxdata$test2:
; X64: .long 0 # CatchObjOffset
; X86-LABEL: L__ehtable$test2:
; X86: .long 0 # CatchObjOffset
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #0
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #0
attributes #0 = { argmemonly nounwind }
|