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 + 16, which is on-entry sp - 16.
15 ; We check this offset in the table later on.
17 ; CHECK-LABEL: "?func@@YAHXZ":
18 ; CHECK: stp x19, x20, [sp, #-64]!
19 ; CHECK: str x21, [sp, #16]
20 ; CHECK: str x28, [sp, #24]
21 ; CHECK: stp x29, x30, [sp, #32]
22 ; CHECK: add x29, sp, #32
23 ; CHECK: sub sp, sp, #624
26 ; CHECK: stur x0, [x29, #16]
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]+]]: // Block address taken
46 ; Check the catch funclet.
47 ; CHECK-LABEL: "?catch$4@?0??func@@YAHXZ@4HA":
49 ; Check that the stack space is allocated only for the callee saved registers.
50 ; CHECK: stp x19, x20, [sp, #-48]!
51 ; CHECK: str x21, [sp, #16]
52 ; CHECK: str x28, [sp, #24]
53 ; CHECK: stp x29, x30, [sp, #32]
54 ; CHECK: add x20, x19, #12
56 ; Check that there are no further stack updates.
57 ; CHECK-NOT: sub sp, sp
59 ; Check that the stack address passed to init2 is off the frame pointer, and
60 ; that it matches the address of B in the parent function.
61 ; CHECK: sub x0, x29, [[B_OFFSET]]
62 ; CHECK: bl "?init2@@YAXPEAH@Z"
64 ; Check that are storing x back to the same location off the frame pointer as in
65 ; the parent function.
66 ; CHECK: stur w8, [x29, [[X_OFFSET]]]
68 ; Check that the funclet branches back to the catchret destination
69 ; CHECK: adrp x0, .LBB0_2
70 ; CHECK-NEXT: add x0, x0, [[CATCHRETDEST]]
73 ; Now check that the offset of the unwind help object from the stack pointer on
74 ; entry to func is encoded in cppxdata that is passed to __CxxFrameHandler3. As
75 ; computed above, this comes to -16.
76 ; CHECK-LABEL: "$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 -16 // UnwindHelp
86 ; UNWIND: Function: ?func@@YAHXZ (0x0)
88 ; UNWIND-NEXT: ; add fp, sp, #32
89 ; UNWIND-NEXT: ; stp x29, x30, [sp, #32]
90 ; UNWIND-NEXT: ; str x28, [sp, #24]
91 ; UNWIND-NEXT: ; str x21, [sp, #16]
92 ; UNWIND-NEXT: ; stp x19, x20, [sp, #-64]!
94 ; UNWIND: Function: ?catch$4@?0??func@@YAHXZ@4HA
96 ; UNWIND-NEXT: ; stp x29, x30, [sp, #32]
97 ; UNWIND-NEXT: ; str x28, [sp, #24]
98 ; UNWIND-NEXT: ; str x21, [sp, #16]
99 ; UNWIND-NEXT: ; stp x19, x20, [sp, #-48]!
102 target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
103 target triple = "aarch64-unknown-windows-msvc19.11.0"
105 %rtti.TypeDescriptor2 = type { ptr, ptr, [3 x i8] }
106 %eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
107 %eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
108 %eh.ThrowInfo = type { i32, i32, i32, i32 }
110 $"??_R0H@8" = comdat any
112 $"_CT??_R0H@84" = comdat any
118 @"??_7type_info@@6B@" = external constant ptr
119 @"??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"??_7type_info@@6B@", ptr null, [3 x i8] c".H\00" }, comdat
120 @__ImageBase = external dso_local constant i8
121 @"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R0H@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
122 @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"_CT??_R0H@84" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
123 @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @_CTA1H to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, section ".xdata", comdat
125 ; Function Attrs: noinline optnone
126 define dso_local i32 @"?func@@YAHXZ"() #0 personality ptr @__CxxFrameHandler3 {
128 %B = alloca [50 x i32], align 4
129 %x = alloca i32, align 4
130 %tmp = alloca i32, align 4
131 %i = alloca i32, align 4
132 %C = alloca [100 x i32], align 4
133 store i32 1, ptr %x, align 4
134 call void @"?init@@YAXPEAH@Z"(ptr %B)
135 %call = invoke i32 @"?func2@@YAHXZ"()
136 to label %invoke.cont unwind label %catch.dispatch
138 invoke.cont: ; preds = %entry
139 store i32 %call, ptr %tmp, align 4
140 invoke void @_CxxThrowException(ptr %tmp, ptr @_TI1H) #2
141 to label %unreachable unwind label %catch.dispatch
143 catch.dispatch: ; preds = %invoke.cont, %entry
144 %0 = catchswitch within none [label %catch] unwind to caller
146 catch: ; preds = %catch.dispatch
147 %1 = catchpad within %0 [ptr @"??_R0H@8", i32 0, ptr %i]
148 call void @"?init@@YAXPEAH@Z"(ptr %C) [ "funclet"(token %1) ]
149 call void @"?init2@@YAXPEAH@Z"(ptr %B) [ "funclet"(token %1) ]
150 %2 = load i32, ptr %i, align 4
151 %idxprom = sext i32 %2 to i64
152 %arrayidx = getelementptr inbounds [50 x i32], ptr %B, i64 0, i64 %idxprom
153 %3 = load i32, ptr %arrayidx, align 4
154 %4 = load i32, ptr %i, align 4
155 %idxprom3 = sext i32 %4 to i64
156 %arrayidx4 = getelementptr inbounds [100 x i32], ptr %C, i64 0, i64 %idxprom3
157 %5 = load i32, ptr %arrayidx4, align 4
158 %add = add nsw i32 %3, %5
159 %6 = load i32, ptr %i, align 4
160 %7 = load i32, ptr %i, align 4
161 %mul = mul nsw i32 %6, %7
162 %add5 = add nsw i32 %add, %mul
163 store i32 %add5, ptr %x, align 4
164 catchret from %1 to label %catchret.dest
166 catchret.dest: ; preds = %catch
169 try.cont: ; preds = %catchret.dest
170 %arrayidx6 = getelementptr inbounds [50 x i32], ptr %B, i64 0, i64 2
171 %8 = load i32, ptr %arrayidx6, align 4
172 %9 = load i32, ptr %x, align 4
173 %add7 = add nsw i32 %8, %9
176 unreachable: ; preds = %invoke.cont
180 declare dso_local void @"?init@@YAXPEAH@Z"(ptr)
182 declare dso_local i32 @"?func2@@YAHXZ"()
184 declare dso_local i32 @__CxxFrameHandler3(...)
186 declare dllimport void @_CxxThrowException(ptr, ptr)
188 declare dso_local void @"?init2@@YAXPEAH@Z"(ptr)
190 attributes #0 = { noinline optnone }
191 attributes #2 = { noreturn }