wineh1.mir
6.54 KB
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
# RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog -filetype=obj \
# RUN: | llvm-readobj --unwind - | FileCheck %s
# RUN: llc -o - %s -mtriple=aarch64-windows -run-pass=aarch64-ldst-opt \
# RUN: | FileCheck %s --check-prefix=CHECK-LDSTOPT
# This test case checks the basic validity of the .xdata section. It's
# documented at:
# https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling
# Also test the generated assembler SEH directives.
# RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog -filetype=asm \
# RUN: | FileCheck %s --check-prefix=ASM
# We expect to see the following in the .xdata section:
# CHECK: ExceptionData {
# CHECK-NEXT: FunctionLength: 96
# CHECK-NEXT: Version: 0
# CHECK-NEXT: ExceptionData: No
# CHECK-NEXT: EpiloguePacked: No
# CHECK-NEXT: EpilogueScopes: 1
# CHECK-NEXT: ByteCodeLength: 28
# CHECK-NEXT: Prologue [
# CHECK-NEXT: 0xc808 ; stp x19, x20, [sp, #64]
# CHECK-NEXT: 0xd0c7 ; str x22, [sp, #56]
# CHECK-NEXT: 0xd086 ; str x21, [sp, #48]
# CHECK-NEXT: 0xc904 ; stp x23, x24, [sp, #32]
# CHECK-NEXT: 0xc982 ; stp x25, x26, [sp, #16]
# CHECK-NEXT: 0xce09 ; stp x27, x28, [sp, #-80]!
# CHECK-NEXT: 0xe4 ; end
# CHECK-NEXT: ]
# CHECK-NEXT: EpilogueScopes [
# CHECK-NEXT: EpilogueScope {
# CHECK-NEXT: StartOffset: 16
# CHECK-NEXT: EpilogueStartIndex: 13
# CHECK-NEXT: Opcodes [
# CHECK-NEXT: 0xc808 ; ldp x19, x20, [sp, #64]
# CHECK-NEXT: 0xd086 ; ldr x21, [sp, #48]
# CHECK-NEXT: 0xe3 ; nop
# CHECK-NEXT: 0xd0c7 ; ldr x22, [sp, #56]
# CHECK-NEXT: 0xc904 ; ldp x23, x24, [sp, #32]
# CHECK-NEXT: 0xc982 ; ldp x25, x26, [sp, #16]
# CHECK-NEXT: 0xce09 ; ldp x27, x28, [sp], #80
# CHECK-NEXT: 0xe4 ; end
# CHECK-NEXT: ]
# CHECK-NEXT: }
# CHECK-NEXT: ]
# CHECK-NEXT: }
# Check that the load-store optimizer does not merge the two
# callee-saved stores in the prologue.
# CHECK-LDSTOPT: name: test
# CHECK-LDSTOPT: frame-setup STRXui killed $x21, $sp, 6
# CHECK-LDSTOPT: frame-setup STRXui killed $x22, $sp, 7
# ASM-LABEL: test:
# ASM: .seh_proc test
# ASM: .seh_save_regp_x x27, 80
# ASM: .seh_save_regp x25, 16
# ASM: .seh_save_regp x23, 32
# ASM: .seh_save_reg x21, 48
# ASM: .seh_save_reg x22, 56
# ASM: .seh_save_regp x19, 64
# ASM: .seh_endprologue
# ASM: .seh_startepilogue
# ASM: .seh_save_regp x19, 64
# ASM: .seh_save_reg x21, 48
# ASM: .seh_nop
# ASM: .seh_save_reg x22, 56
# ASM: .seh_save_regp x23, 32
# ASM: .seh_save_regp x25, 16
# ASM: .seh_save_regp_x x27, 80
# ASM: .seh_endepilogue
# ASM: .seh_endfunclet
# ASM: .seh_endproc
...
---
name: test
alignment: 4
tracksRegLiveness: true
hasWinCFI: true
liveins:
- { reg: '$w0' }
frameInfo:
stackSize: 80
maxAlignment: 8
maxCallFrameSize: 0
hasOpaqueSPAdjustment: true
stack:
- { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x19' }
- { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x20' }
- { id: 2, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x21' }
- { id: 3, type: spill-slot, offset: -32, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x22' }
- { id: 4, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x23' }
- { id: 5, type: spill-slot, offset: -48, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x24' }
- { id: 6, type: spill-slot, offset: -56, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x25' }
- { id: 7, type: spill-slot, offset: -64, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x26' }
- { id: 8, type: spill-slot, offset: -72, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x27' }
- { id: 9, type: spill-slot, offset: -80, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$x28' }
body: |
bb.0.entry:
liveins: $x0, $x1, $x27, $x28, $x25, $x26, $x23, $x24, $x21, $x22, $x19, $x20
early-clobber $sp = frame-setup STPXpre killed $x27, killed $x28, $sp, -10 :: (store 8 into %stack.8), (store 8 into %stack.9)
frame-setup SEH_SaveRegP_X 27, 28, -80
frame-setup STPXi killed $x25, killed $x26, $sp, 2 :: (store 8 into %stack.6), (store 8 into %stack.7)
frame-setup SEH_SaveRegP 25, 26, 16
frame-setup STPXi killed $x23, killed $x24, $sp, 4 :: (store 8 into %stack.4), (store 8 into %stack.5)
frame-setup SEH_SaveRegP 23, 24, 32
frame-setup STRXui killed $x21, $sp, 6 :: (store 8 into %stack.2)
frame-setup SEH_SaveReg 21, 48
frame-setup STRXui killed $x22, $sp, 7 :: (store 8 into %stack.3)
frame-setup SEH_SaveReg 22, 56
frame-setup STPXi killed $x19, killed $x20, $sp, 8 :: (store 8 into %stack.0), (store 8 into %stack.1)
frame-setup SEH_SaveRegP 19, 20, 64
frame-setup SEH_PrologEnd
$x19 = ADDXrr $x0, killed $x1
$x20 = ADDXrr $x19, killed $x0
$x21 = ADDXrr $x20, killed $x19
$x22 = ADDXrr $x21, killed $x20
$x23 = ADDXrr $x22, killed $x21
$x24 = ADDXrr $x23, killed $x22
$x25 = ADDXrr $x24, killed $x23
$x26 = ADDXrr $x25, killed $x24
$x27 = ADDXrr $x26, killed $x25
$x28 = ADDXrr $x27, killed $x26
frame-destroy SEH_EpilogStart
$x19, $x20 = frame-destroy LDPXi $sp, 8 :: (load 8 from %stack.0), (load 8 from %stack.1)
frame-destroy SEH_SaveRegP 19, 20, 64
$x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2)
frame-destroy SEH_SaveReg 21, 48
$x0 = COPY $x28
frame-destroy SEH_Nop
$x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2)
frame-destroy SEH_SaveReg 22, 56
$x23, $x24 = frame-destroy LDPXi $sp, 4 :: (load 8 from %stack.4), (load 8 from %stack.5)
frame-destroy SEH_SaveRegP 23, 24, 32
$x25, $x26 = frame-destroy LDPXi $sp, 2 :: (load 8 from %stack.6), (load 8 from %stack.7)
frame-destroy SEH_SaveRegP 25, 26, 16
early-clobber $sp, $x27, $x28 = frame-destroy LDPXpost $sp, 10 :: (load 8 from %stack.8), (load 8 from %stack.9)
frame-destroy SEH_SaveRegP_X 27, 28, -80
frame-destroy SEH_EpilogEnd
RET_ReallyLR implicit $x0
...