| blob | e468d7f0b8280332ba30a185ee57aa92b694d60f |
1 # RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog -filetype=obj \
2 # RUN: | llvm-readobj --unwind | FileCheck %s
3 # RUN: llc -o - %s -mtriple=aarch64-windows -run-pass=aarch64-ldst-opt \
4 # RUN: | FileCheck %s --check-prefix=CHECK-LDSTOPT
5 # This test case checks the basic validity of the .xdata section. It's
6 # documented at:
7 # https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling
9 # We expect to see the following in the .xdata section:
11 # CHECK: ExceptionData {
12 # CHECK-NEXT: FunctionLength: 96
13 # CHECK-NEXT: Version: 0
14 # CHECK-NEXT: ExceptionData: No
15 # CHECK-NEXT: EpiloguePacked: No
16 # CHECK-NEXT: EpilogueScopes: 1
17 # CHECK-NEXT: ByteCodeLength: 28
18 # CHECK-NEXT: Prologue [
19 # CHECK-NEXT: 0xc808 ; stp x19, x20, [sp, #64]
20 # CHECK-NEXT: 0xd0c7 ; str x22, [sp, #56]
21 # CHECK-NEXT: 0xd086 ; str x21, [sp, #48]
22 # CHECK-NEXT: 0xc904 ; stp x23, x24, [sp, #32]
23 # CHECK-NEXT: 0xc982 ; stp x25, x26, [sp, #16]
24 # CHECK-NEXT: 0xce09 ; stp x27, x28, [sp, #-80]!
25 # CHECK-NEXT: 0xe4 ; end
26 # CHECK-NEXT: ]
27 # CHECK-NEXT: EpilogueScopes [
28 # CHECK-NEXT: EpilogueScope {
29 # CHECK-NEXT: StartOffset: 16
30 # CHECK-NEXT: EpilogueStartIndex: 13
31 # CHECK-NEXT: Opcodes [
32 # CHECK-NEXT: 0xc808 ; ldp x19, x20, [sp, #64]
33 # CHECK-NEXT: 0xd086 ; ldr x21, [sp, #48]
34 # CHECK-NEXT: 0xe3 ; nop
35 # CHECK-NEXT: 0xd0c7 ; ldr x22, [sp, #56]
36 # CHECK-NEXT: 0xc904 ; ldp x23, x24, [sp, #32]
37 # CHECK-NEXT: 0xc982 ; ldp x25, x26, [sp, #16]
38 # CHECK-NEXT: 0xce09 ; ldp x27, x28, [sp], #80
39 # CHECK-NEXT: 0xe4 ; end
40 # CHECK-NEXT: ]
41 # CHECK-NEXT: }
42 # CHECK-NEXT: ]
43 # CHECK-NEXT: }
45 # Check that the load-store optimizer does not merge the two
46 # callee-saved stores in the prologue.
47 # CHECK-LDSTOPT: name: test
48 # CHECK-LDSTOPT: frame-setup STRXui killed $x21, $sp, 6
49 # CHECK-LDSTOPT: frame-setup STRXui killed $x22, $sp, 7
50 ...
51 ---
52 name: test
53 alignment: 4
54 tracksRegLiveness: true
55 hasWinCFI: true
56 liveins:
57 - { reg: '$w0' }
58 frameInfo:
59 stackSize: 80
60 maxAlignment: 8
61 maxCallFrameSize: 0
62 hasOpaqueSPAdjustment: true
63 stack:
64 - { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, stack-id: default,
65 callee-saved-register: '$x19' }
66 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, stack-id: default,
67 callee-saved-register: '$x20' }
68 - { id: 2, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default,
69 callee-saved-register: '$x21' }
70 - { id: 3, type: spill-slot, offset: -32, size: 8, alignment: 8, stack-id: default,
71 callee-saved-register: '$x22' }
72 - { id: 4, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default,
73 callee-saved-register: '$x23' }
74 - { id: 5, type: spill-slot, offset: -48, size: 8, alignment: 8, stack-id: default,
75 callee-saved-register: '$x24' }
76 - { id: 6, type: spill-slot, offset: -56, size: 8, alignment: 8, stack-id: default,
77 callee-saved-register: '$x25' }
78 - { id: 7, type: spill-slot, offset: -64, size: 8, alignment: 8, stack-id: default,
79 callee-saved-register: '$x26' }
80 - { id: 8, type: spill-slot, offset: -72, size: 8, alignment: 8, stack-id: default,
81 callee-saved-register: '$x27' }
82 - { id: 9, type: spill-slot, offset: -80, size: 8, alignment: 8, stack-id: default,
83 callee-saved-register: '$x28' }
84 body: |
85 bb.0.entry:
86 liveins: $x0, $x1, $x27, $x28, $x25, $x26, $x23, $x24, $x21, $x22, $x19, $x20
87 early-clobber $sp = frame-setup STPXpre killed $x27, killed $x28, $sp, -10 :: (store 8 into %stack.8), (store 8 into %stack.9)
88 frame-setup SEH_SaveRegP_X 27, 28, -80
89 frame-setup STPXi killed $x25, killed $x26, $sp, 2 :: (store 8 into %stack.6), (store 8 into %stack.7)
90 frame-setup SEH_SaveRegP 25, 26, 16
91 frame-setup STPXi killed $x23, killed $x24, $sp, 4 :: (store 8 into %stack.4), (store 8 into %stack.5)
92 frame-setup SEH_SaveRegP 23, 24, 32
93 frame-setup STRXui killed $x21, $sp, 6 :: (store 8 into %stack.2)
94 frame-setup SEH_SaveReg 21, 48
95 frame-setup STRXui killed $x22, $sp, 7 :: (store 8 into %stack.3)
96 frame-setup SEH_SaveReg 22, 56
97 frame-setup STPXi killed $x19, killed $x20, $sp, 8 :: (store 8 into %stack.0), (store 8 into %stack.1)
98 frame-setup SEH_SaveRegP 19, 20, 64
99 frame-setup SEH_PrologEnd
100 $x19 = ADDXrr $x0, killed $x1
101 $x20 = ADDXrr $x19, killed $x0
102 $x21 = ADDXrr $x20, killed $x19
103 $x22 = ADDXrr $x21, killed $x20
104 $x23 = ADDXrr $x22, killed $x21
105 $x24 = ADDXrr $x23, killed $x22
106 $x25 = ADDXrr $x24, killed $x23
107 $x26 = ADDXrr $x25, killed $x24
108 $x27 = ADDXrr $x26, killed $x25
109 $x28 = ADDXrr $x27, killed $x26
110 frame-destroy SEH_EpilogStart
111 $x19, $x20 = frame-destroy LDPXi $sp, 8 :: (load 8 from %stack.0), (load 8 from %stack.1)
112 frame-destroy SEH_SaveRegP 19, 20, 64
113 $x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2)
114 frame-destroy SEH_SaveReg 21, 48
115 $x0 = COPY $x28
116 frame-destroy SEH_Nop
117 $x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2)
118 frame-destroy SEH_SaveReg 22, 56
119 $x23, $x24 = frame-destroy LDPXi $sp, 4 :: (load 8 from %stack.4), (load 8 from %stack.5)
120 frame-destroy SEH_SaveRegP 23, 24, 32
121 $x25, $x26 = frame-destroy LDPXi $sp, 2 :: (load 8 from %stack.6), (load 8 from %stack.7)
122 frame-destroy SEH_SaveRegP 25, 26, 16
123 early-clobber $sp, $x27, $x28 = frame-destroy LDPXpost $sp, 10 :: (load 8 from %stack.8), (load 8 from %stack.9)
124 frame-destroy SEH_SaveRegP_X 27, 28, -80
125 frame-destroy SEH_EpilogEnd
126 RET_ReallyLR implicit $x0
128 ...