1 ; RUN: llc -o - %s -mtriple=aarch64-windows -verify-machineinstrs | FileCheck %s
2 ; RUN: llc -o %t -filetype=obj %s -mtriple=aarch64-windows
3 ; RUN: llvm-readobj --unwind %t | FileCheck %s -check-prefix=UNWIND
5 ; We test the following
6 ; 1) That the unwind help object is created and that its offset from the stack
7 ; pointer on entry is patched into the table fed to __CxxFrameHandler3
8 ; 2) That the stack update for the catch funclet only includes the callee saved
10 ; 3) That the locals are accessed using the frame pointer in both the funclet
11 ; and the parent function.
13 ; The following checks that the unwind help object has -2 stored into it at
14 ; fp - 400 - 256 = fp - 656, which is on-entry sp - 48 + 32 - 656 =
15 ; on-entry sp - 672. We check this offset in the table later on.
17 ; CHECK-LABEL: "?func@@YAHXZ":
18 ; CHECK: str x28, [sp, #-48]!
19 ; CHECK: str x21, [sp, #8]
20 ; CHECK: stp x19, x20, [sp, #16]
21 ; CHECK: stp x29, x30, [sp, #32]
22 ; CHECK: add x29, sp, #32
23 ; CHECK: sub sp, sp, #624
26 ; CHECK: stur x0, [x19]
28 ; Now check that x is stored at fp - 20. We check that this is the same
29 ; location accessed from the funclet to retrieve x.
31 ; CHECK: stur w8, [x29, [[X_OFFSET:#-[1-9][0-9]+]]
33 ; Check the offset off the frame pointer at which B is located.
34 ; Check the same offset is used to pass the address of B to init2 in the
36 ; CHECK: sub x0, x29, [[B_OFFSET:#[1-9][0-9]+]]
37 ; CHECK: bl "?init@@YAXPEAH@Z"
39 ; This is the label for the throw that is encoded in the ip2state.
40 ; We are inside the try block, where we make a call to func2
41 ; CHECK-LABEL: .Ltmp0:
42 ; CHECK: bl "?func2@@YAHXZ
44 ; CHECK: [[CATCHRETDEST:.LBB0_[0-9]+]]: ; %catchret.dest
46 ; Check the catch funclet.
47 ; CHECK-LABEL: "?catch$2@?0??func@@YAHXZ@4HA":
49 ; Check that the stack space is allocated only for the callee saved registers.
50 ; CHECK: str x28, [sp, #-48]!
51 ; CHECK: str x21, [sp, #8]
52 ; CHECK: stp x19, x20, [sp, #16]
53 ; CHECK: stp x29, x30, [sp, #32]
54 ; CHECK: add x20, x19, #12
56 ; Check that there are no further stack updates.
57 ; CHECK-NOT: sub sp, sp
59 ; Check that the stack address passed to init2 is off the frame pointer, and
60 ; that it matches the address of B in the parent function.
61 ; CHECK: sub x0, x29, [[B_OFFSET]]
62 ; CHECK: bl "?init2@@YAXPEAH@Z"
64 ; Check that are storing x back to the same location off the frame pointer as in
65 ; the parent function.
66 ; CHECK: stur w8, [x29, [[X_OFFSET]]]
68 ; Check that the funclet branches back to the catchret destination
69 ; CHECK: adrp x0, .LBB0_3
70 ; CHECK-NEXT: add x0, x0, [[CATCHRETDEST]]
73 ; Now check that the offset of the unwind help object from the stack pointer on
74 ; entry to func is encoded in cppxdata that is passed to __CxxFrameHandler3. As
75 ; computed above, this comes to -672.
76 ; CHECK-LABEL: "$cppxdata$?func@@YAHXZ":
77 ; CHECK-NEXT: .word 429065506 ; MagicNumber
78 ; CHECK-NEXT: .word 2 ; MaxState
79 ; CHECK-NEXT: .word ("$stateUnwindMap$?func@@YAHXZ")@IMGREL ; UnwindMap
80 ; CHECK-NEXT: .word 1 ; NumTryBlocks
81 ; CHECK-NEXT: .word ("$tryMap$?func@@YAHXZ")@IMGREL ; TryBlockMap
82 ; CHECK-NEXT: .word 4 ; IPMapEntries
83 ; CHECK-NEXT: .word ("$ip2state$?func@@YAHXZ")@IMGREL ; IPToStateXData
84 ; CHECK-NEXT: .word -672 ; UnwindHelp
86 ; UNWIND: Function: ?func@@YAHXZ (0x0)
89 ; UNWIND-NEXT: ; sub sp, #624
90 ; UNWIND-NEXT: ; add fp, sp, #32
91 ; UNWIND-NEXT: ; stp x29, x30, [sp, #32]
92 ; UNWIND-NEXT: ; stp x19, x20, [sp, #16]
93 ; UNWIND-NEXT: ; str x21, [sp, #8]
94 ; UNWIND-NEXT: ; str x28, [sp, #48]!
96 ; UNWIND: Function: ?catch$2@?0??func@@YAHXZ@4HA
98 ; UNWIND-NEXT: ; stp x29, x30, [sp, #32]
99 ; UNWIND-NEXT: ; stp x19, x20, [sp, #16]
100 ; UNWIND-NEXT: ; str x21, [sp, #8]
101 ; UNWIND-NEXT: ; str x28, [sp, #48]!
104 target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
105 target triple = "aarch64-unknown-windows-msvc19.11.0"
107 %rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
108 %eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
109 %eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
110 %eh.ThrowInfo = type { i32, i32, i32, i32 }
112 $"??_R0H@8" = comdat any
114 $"_CT??_R0H@84" = comdat any
120 @"??_7type_info@@6B@" = external constant i8*
121 @"??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
122 @__ImageBase = external dso_local constant i8
123 @"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
124 @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
125 @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
127 ; Function Attrs: noinline optnone
128 define dso_local i32 @"?func@@YAHXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
130 %B = alloca [50 x i32], align 4
131 %x = alloca i32, align 4
132 %tmp = alloca i32, align 4
133 %i = alloca i32, align 4
134 %C = alloca [100 x i32], align 4
135 store i32 1, i32* %x, align 4
136 %arraydecay = getelementptr inbounds [50 x i32], [50 x i32]* %B, i32 0, i32 0
137 call void @"?init@@YAXPEAH@Z"(i32* %arraydecay)
138 %call = invoke i32 @"?func2@@YAHXZ"()
139 to label %invoke.cont unwind label %catch.dispatch
141 invoke.cont: ; preds = %entry
142 store i32 %call, i32* %tmp, align 4
143 %0 = bitcast i32* %tmp to i8*
144 invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2
145 to label %unreachable unwind label %catch.dispatch
147 catch.dispatch: ; preds = %invoke.cont, %entry
148 %1 = catchswitch within none [label %catch] unwind to caller
150 catch: ; preds = %catch.dispatch
151 %2 = catchpad within %1 [%rtti.TypeDescriptor2* @"??_R0H@8", i32 0, i32* %i]
152 %arraydecay1 = getelementptr inbounds [100 x i32], [100 x i32]* %C, i32 0, i32 0
153 call void @"?init@@YAXPEAH@Z"(i32* %arraydecay1) [ "funclet"(token %2) ]
154 %arraydecay2 = getelementptr inbounds [50 x i32], [50 x i32]* %B, i32 0, i32 0
155 call void @"?init2@@YAXPEAH@Z"(i32* %arraydecay2) [ "funclet"(token %2) ]
156 %3 = load i32, i32* %i, align 4
157 %idxprom = sext i32 %3 to i64
158 %arrayidx = getelementptr inbounds [50 x i32], [50 x i32]* %B, i64 0, i64 %idxprom
159 %4 = load i32, i32* %arrayidx, align 4
160 %5 = load i32, i32* %i, align 4
161 %idxprom3 = sext i32 %5 to i64
162 %arrayidx4 = getelementptr inbounds [100 x i32], [100 x i32]* %C, i64 0, i64 %idxprom3
163 %6 = load i32, i32* %arrayidx4, align 4
164 %add = add nsw i32 %4, %6
165 %7 = load i32, i32* %i, align 4
166 %8 = load i32, i32* %i, align 4
167 %mul = mul nsw i32 %7, %8
168 %add5 = add nsw i32 %add, %mul
169 store i32 %add5, i32* %x, align 4
170 catchret from %2 to label %catchret.dest
172 catchret.dest: ; preds = %catch
175 try.cont: ; preds = %catchret.dest
176 %arrayidx6 = getelementptr inbounds [50 x i32], [50 x i32]* %B, i64 0, i64 2
177 %9 = load i32, i32* %arrayidx6, align 4
178 %10 = load i32, i32* %x, align 4
179 %add7 = add nsw i32 %9, %10
182 unreachable: ; preds = %invoke.cont
186 declare dso_local void @"?init@@YAXPEAH@Z"(i32*)
188 declare dso_local i32 @"?func2@@YAHXZ"()
190 declare dso_local i32 @__CxxFrameHandler3(...)
192 declare dllimport void @_CxxThrowException(i8*, %eh.ThrowInfo*)
194 declare dso_local void @"?init2@@YAXPEAH@Z"(i32*)
196 attributes #0 = { noinline optnone }
197 attributes #2 = { noreturn }