1 # RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \
2 # RUN: -stop-after=prologepilog | FileCheck %s
3 # Test that stack probe results in Nop unwind codes in the prologue. Test
4 # save_fplr, save_reg_x and stack_alloc with multiple updates.
6 # CHECK: early-clobber $sp = frame-setup STRXpre killed $x28, $sp, -32
7 # CHECK-NEXT: frame-setup SEH_SaveReg_X 28, -32
8 # CHECK-NEXT: frame-setup STPXi killed $fp, killed $lr, $sp, 2
9 # CHECK-NEXT: frame-setup SEH_SaveFPLR 16
10 # CHECK-NEXT: $x15 = frame-setup MOVZXi 56009, 0
11 # CHECK-NEXT: frame-setup SEH_Nop
12 # CHECK-NEXT: $x15 = frame-setup MOVKXi $x15, 2, 16
13 # CHECK-NEXT: frame-setup SEH_Nop
14 # CHECK-NEXT: frame-setup BL &__chkstk, implicit-def $lr, implicit $sp, implicit $x15
15 # CHECK-NEXT: frame-setup SEH_Nop
16 # CHECK-NEXT: $sp = frame-setup SUBXrx64 killed $sp, killed $x15, 28
17 # CHECK-NEXT: frame-setup SEH_StackAlloc 2993296
18 # CHECK-NEXT: frame-setup SEH_PrologEnd
19 # CHECK: frame-destroy SEH_EpilogStart
20 # CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 730, 12
21 # CHECK-NEXT: frame-destroy SEH_StackAlloc 2990080
22 # CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 3216, 0
23 # CHECK-NEXT: frame-destroy SEH_StackAlloc 3216
24 # CHECK-NEXT: $fp, $lr = frame-destroy LDPXi $sp, 2
25 # CHECK-NEXT: frame-destroy SEH_SaveFPLR 16
26 # CHECK-NEXT: early-clobber $sp, $x28 = frame-destroy LDRXpost $sp, 32
27 # CHECK-NEXT: frame-destroy SEH_SaveReg_X 28, -32
28 # CHECK-NEXT: frame-destroy SEH_EpilogEnd
29 # CHECK-NEXT: RET_ReallyLR implicit killed $w0
31 target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
32 target triple = "aarch64-unknown-windows-msvc19.11.0"
34 ; Function Attrs: noinline optnone
35 define dso_local i32 @"?func@@YAHH@Z"(i32 %i) #0 {
37 %retval = alloca i32, align 4
38 %i.addr = alloca i32, align 4
39 %A = alloca [748193 x i32], align 4
40 %a = alloca i32, align 4
41 %B = alloca [123 x i32], align 4
42 store i32 %i, i32* %i.addr, align 4
43 %0 = load i32, i32* %i.addr, align 4
44 %add = add nsw i32 %0, 2
45 store i32 %add, i32* %a, align 4
46 %call = call i32 @"?func2@@YAHXZ"()
47 %1 = load i32, i32* %i.addr, align 4
48 %cmp = icmp sgt i32 %1, 2
49 br i1 %cmp, label %if.then, label %if.else
51 if.then: ; preds = %entry
52 %call1 = call i32 @"?func2@@YAHXZ"()
53 store i32 %call1, i32* %retval, align 4
56 if.else: ; preds = %entry
57 %arraydecay = getelementptr inbounds [123 x i32], [123 x i32]* %B, i32 0, i32 0
58 %call2 = call i32 @"?func3@@YAHPEAH@Z"(i32* %arraydecay)
59 store i32 %call2, i32* %retval, align 4
62 return: ; preds = %if.else, %if.then
63 %2 = load i32, i32* %retval, align 4
67 declare dso_local i32 @"?func2@@YAHXZ"() #1
69 declare dso_local i32 @"?func3@@YAHPEAH@Z"(i32*) #1
71 ; Function Attrs: nounwind
72 declare void @llvm.stackprotector(i8*, i8**) #2
74 attributes #0 = { noinline optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+neon" "unsafe-fp-math"="false" "use-soft-float"="false" }
75 attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+neon" "unsafe-fp-math"="false" "use-soft-float"="false" }
76 attributes #2 = { nounwind }
82 exposesReturnsTwice: false
87 tracksRegLiveness: true
92 isFrameAddressTaken: false
93 isReturnAddressTaken: false
103 cvBytesOfCalleeSavedRegisters: 0
104 hasOpaqueSPAdjustment: false
106 hasMustTailInVarArgFunc: false
107 localFrameSize: 2993276
112 - { id: 0, name: retval, type: default, offset: 0, size: 4, alignment: 4,
113 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
114 local-offset: -4, debug-info-variable: '', debug-info-expression: '',
115 debug-info-location: '' }
116 - { id: 1, name: i.addr, type: default, offset: 0, size: 4, alignment: 4,
117 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
118 local-offset: -8, debug-info-variable: '', debug-info-expression: '',
119 debug-info-location: '' }
120 - { id: 2, name: A, type: default, offset: 0, size: 2992772, alignment: 4,
121 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
122 local-offset: -2992780, debug-info-variable: '', debug-info-expression: '',
123 debug-info-location: '' }
124 - { id: 3, name: a, type: default, offset: 0, size: 4, alignment: 4,
125 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
126 local-offset: -2992784, debug-info-variable: '', debug-info-expression: '',
127 debug-info-location: '' }
128 - { id: 4, name: B, type: default, offset: 0, size: 492, alignment: 4,
129 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
130 local-offset: -2993276, debug-info-variable: '', debug-info-expression: '',
131 debug-info-location: '' }
132 - { id: 5, name: '', type: spill-slot, offset: 0, size: 8, alignment: 8,
133 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
134 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
135 - { id: 6, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
136 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
137 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
141 successors: %bb.2(0x40000000), %bb.3(0x40000000)
144 renamable $x8 = ADDXri %stack.1.i.addr, 0, 0
145 renamable $w9 = MOVi32imm 2
146 STRWui killed renamable $w0, renamable $x8, 0 :: (store 4 into %ir.i.addr)
147 renamable $w0 = LDRWui renamable $x8, 0 :: (load 4 from %ir.i.addr)
148 renamable $w0 = ADDWri killed renamable $w0, 2, 0
149 STRWui killed renamable $w0, %stack.3.a, 0 :: (store 4 into %ir.a)
150 ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
151 STRXui killed $x8, %stack.5, 0 :: (store 8 into %stack.5)
152 STRWui killed $w9, %stack.6, 0 :: (store 4 into %stack.6)
153 BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0
154 ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
155 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5)
156 renamable $w9 = LDRWui killed renamable $x8, 0 :: (load 4 from %ir.i.addr)
157 $w10 = LDRWui %stack.6, 0 :: (load 4 from %stack.6)
158 $wzr = SUBSWrr killed renamable $w9, killed renamable $w10, implicit-def $nzcv
159 renamable $w9 = CSINCWr $wzr, $wzr, 13, implicit $nzcv
160 TBNZW killed renamable $w9, 0, %bb.2
164 successors: %bb.4(0x80000000)
166 ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
167 BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0
168 ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
169 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5)
170 STRWui killed renamable $w0, killed renamable $x8, 1 :: (store 4 into %ir.retval)
174 successors: %bb.4(0x80000000)
176 renamable $x8 = ADDXri %stack.4.B, 0, 0
177 ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
178 $x0 = COPY killed renamable $x8
179 BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit killed $x0, implicit-def $w0
180 ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
181 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5)
182 STRWui killed renamable $w0, killed renamable $x8, 1 :: (store 4 into %ir.retval)
185 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5)
186 renamable $w0 = LDRWui killed renamable $x8, 1 :: (load 4 from %ir.retval)
187 RET_ReallyLR implicit killed $w0