1 # RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog \
2 # RUN: -filetype=obj | llvm-readobj --unwind - | FileCheck %s
4 # Check that that the large stack allocation is correctly represented in .xdata.
6 # CHECK: ExceptionData {
7 # CHECK-NEXT: FunctionLength: 156
8 # CHECK-NEXT: Version: 0
9 # CHECK-NEXT: ExceptionData: No
10 # CHECK-NEXT: EpiloguePacked: Yes
11 # CHECK-NEXT: EpilogueOffset: 11
12 # CHECK-NEXT: ByteCodeLength: 24
13 # CHECK-NEXT: Prologue [
14 # CHECK-NEXT: 0xe002dac9 ; sub sp, #2993296
15 # CHECK-NEXT: 0xe3 ; nop
16 # CHECK-NEXT: 0xe3 ; nop
17 # CHECK-NEXT: 0xe3 ; nop
18 # CHECK-NEXT: 0x42 ; stp x29, x30, [sp, #16]
19 # CHECK-NEXT: 0xd53f ; str x28, [sp, #-256]!
20 # CHECK-NEXT: 0xe4 ; end
22 # CHECK-NEXT: Epilogue [
23 # CHECK-NEXT: 0xe002da00 ; add sp, #2990080
24 # CHECK-NEXT: 0xc0c9 ; add sp, #3216
25 # CHECK-NEXT: 0x42 ; ldp x29, x30, [sp, #16]
26 # CHECK-NEXT: 0xd53f ; ldr x28, [sp], #256
27 # CHECK-NEXT: 0xe4 ; end
33 target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
34 target triple = "aarch64-unknown-windows-msvc19.11.0"
36 ; Function Attrs: noinline optnone
37 define dso_local i32 @"?func@@YAHH@Z"(i32 %i) #0 {
39 %retval = alloca i32, align 4
40 %i.addr = alloca i32, align 4
41 %A = alloca [748193 x i32], align 4
42 %a = alloca i32, align 4
43 %B = alloca [123 x i32], align 4
44 store i32 %i, i32* %i.addr, align 4
45 %0 = load i32, i32* %i.addr, align 4
46 %add = add nsw i32 %0, 2
47 store i32 %add, i32* %a, align 4
48 %call = call i32 @"?func2@@YAHXZ"()
49 %1 = load i32, i32* %i.addr, align 4
50 %cmp = icmp sgt i32 %1, 2
51 br i1 %cmp, label %if.then, label %if.else
53 if.then: ; preds = %entry
54 %call1 = call i32 @"?func2@@YAHXZ"()
55 store i32 %call1, i32* %retval, align 4
58 if.else: ; preds = %entry
59 %arraydecay = getelementptr inbounds [123 x i32], [123 x i32]* %B, i32 0, i32 0
60 %call2 = call i32 @"?func3@@YAHPEAH@Z"(i32* %arraydecay)
61 store i32 %call2, i32* %retval, align 4
64 return: ; preds = %if.else, %if.then
65 %2 = load i32, i32* %retval, align 4
69 declare dso_local i32 @"?func2@@YAHXZ"() #1
71 declare dso_local i32 @"?func3@@YAHPEAH@Z"(i32*) #1
73 ; Function Attrs: nounwind
74 declare void @llvm.stackprotector(i8*, i8**) #2
76 attributes #0 = { noinline optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "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" }
77 attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "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" }
78 attributes #2 = { nounwind }
80 !llvm.module.flags = !{!0}
82 !0 = !{i32 1, !"wchar_size", i32 2}
88 exposesReturnsTwice: false
93 tracksRegLiveness: true
98 isFrameAddressTaken: false
99 isReturnAddressTaken: false
109 hasOpaqueSPAdjustment: false
111 hasMustTailInVarArgFunc: false
112 localFrameSize: 2993276
117 - { id: 0, name: retval, type: default, offset: -36, size: 4, alignment: 4,
118 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
119 local-offset: -4, debug-info-variable: '', debug-info-expression: '',
120 debug-info-location: '' }
121 - { id: 1, name: i.addr, type: default, offset: -40, size: 4, alignment: 4,
122 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
123 local-offset: -8, debug-info-variable: '', debug-info-expression: '',
124 debug-info-location: '' }
125 - { id: 2, name: A, type: default, offset: -2992812, size: 2992772, alignment: 4,
126 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
127 local-offset: -2992780, debug-info-variable: '', debug-info-expression: '',
128 debug-info-location: '' }
129 - { id: 3, name: a, type: default, offset: -2992816, size: 4, alignment: 4,
130 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
131 local-offset: -2992784, debug-info-variable: '', debug-info-expression: '',
132 debug-info-location: '' }
133 - { id: 4, name: B, type: default, offset: -2993308, size: 492, alignment: 4,
134 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
135 local-offset: -2993276, debug-info-variable: '', debug-info-expression: '',
136 debug-info-location: '' }
137 - { id: 5, name: '', type: spill-slot, offset: -2993320, size: 8, alignment: 8,
138 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
139 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
140 - { id: 6, name: '', type: spill-slot, offset: -2993324, size: 4, alignment: 4,
141 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
142 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
143 - { id: 7, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
144 stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true,
145 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
146 - { id: 8, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
147 stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
148 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
149 - { id: 9, name: '', type: spill-slot, offset: -32, size: 8, alignment: 16,
150 stack-id: default, callee-saved-register: '$x28', callee-saved-restored: true,
151 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
155 successors: %bb.2(0x40000000), %bb.3(0x40000000)
156 liveins: $w0, $x28, $fp, $lr
158 early-clobber $sp = frame-setup STRXpre killed $x28, $sp, -32 :: (store (s64) into %stack.9)
159 frame-setup SEH_SaveReg_X 28, -256
160 frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store (s64) into %stack.7), (store (s64) into %stack.8)
161 frame-setup SEH_SaveFPLR 16
162 $x15 = frame-setup MOVZXi 56009, 0
164 $x15 = frame-setup MOVKXi $x15, 2, 16
166 frame-setup BL &__chkstk, implicit-def $lr, implicit $sp, implicit $x15
168 $sp = frame-setup SUBXrx64 killed $sp, killed $x15, 28
169 frame-setup SEH_StackAlloc 2993296
170 frame-setup SEH_PrologEnd
171 $x8 = ADDXri $sp, 730, 12
172 $x8 = ADDXri $x8, 3208, 0
173 renamable $w9 = MOVi32imm 2
174 STRWui killed renamable $w0, renamable $x8, 0 :: (store (s32) into %ir.i.addr)
175 renamable $w0 = LDRWui renamable $x8, 0 :: (load (s32) from %ir.i.addr)
176 renamable $w0 = ADDWri killed renamable $w0, 2, 0
177 STRWui killed renamable $w0, $sp, 128 :: (store (s32) into %ir.a)
178 STRXui killed $x8, $sp, 1 :: (store (s64) into %stack.5)
179 STRWui killed $w9, $sp, 1 :: (store (s32) into %stack.6)
180 BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0
181 $x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
182 renamable $w9 = LDRWui killed renamable $x8, 0 :: (load (s32) from %ir.i.addr)
183 $w10 = LDRWui $sp, 1 :: (load (s32) from %stack.6)
184 $wzr = SUBSWrr killed renamable $w9, killed renamable $w10, implicit-def $nzcv
185 renamable $w9 = CSINCWr $wzr, $wzr, 13, implicit $nzcv
186 TBNZW killed renamable $w9, 0, %bb.2
190 successors: %bb.4(0x80000000)
192 BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0
193 $x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
194 STRWui killed renamable $w0, killed renamable $x8, 1 :: (store (s32) into %ir.retval)
198 successors: %bb.4(0x80000000)
200 $x8 = ADDXri $sp, 20, 0
201 $x0 = COPY killed renamable $x8
202 BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit killed $x0, implicit-def $w0
203 $x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
204 STRWui killed renamable $w0, killed renamable $x8, 1 :: (store (s32) into %ir.retval)
207 $x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
208 renamable $w0 = LDRWui killed renamable $x8, 1 :: (load (s32) from %ir.retval)
209 frame-destroy SEH_EpilogStart
210 $sp = frame-destroy ADDXri $sp, 730, 12
211 frame-destroy SEH_StackAlloc 2990080
212 $sp = frame-destroy ADDXri $sp, 3216, 0
213 frame-destroy SEH_StackAlloc 3216
214 $fp, $lr = frame-destroy LDPXi $sp, 2 :: (load (s64) from %stack.7), (load (s64) from %stack.8)
215 frame-destroy SEH_SaveFPLR 16
216 early-clobber $sp, $x28 = frame-destroy LDRXpost $sp, 32 :: (load (s64) from %stack.9)
217 frame-destroy SEH_SaveReg_X 28, -256
218 frame-destroy SEH_EpilogEnd
219 RET_ReallyLR implicit killed $w0