; RUN: llc -o - %s -mtriple=aarch64-windows -verify-machineinstrs | FileCheck %s ; RUN: llc -o %t -filetype=obj %s -mtriple=aarch64-windows ; RUN: llvm-readobj -unwind %t | FileCheck %s -check-prefix=UNWIND ; We test the following ; 1) That the unwind help object is created and that its offset from the stack ; pointer on entry is patched into the table fed to __CxxFrameHandler3 ; 2) That the stack update for the catch funclet only includes the callee saved ; registers ; 3) That the locals are accessed using the frame pointer in both the funclet ; and the parent function. ; The following checks that the unwind help object has -2 stored into it at ; fp - 400 - 256 = fp - 656, which is on-entry sp - 48 + 32 - 656 = ; on-entry sp - 672. We check this offset in the table later on. ; CHECK-LABEL: "?func@@YAHXZ": ; CHECK: str x28, [sp, #-48]! ; CHECK: str x21, [sp, #8] ; CHECK: stp x19, x20, [sp, #16] ; CHECK: stp x29, x30, [sp, #32] ; CHECK: add x29, sp, #32 ; CHECK: sub sp, sp, #624 ; CHECK: mov x19, sp ; CHECK: orr x1, xzr, #0xfffffffffffffffe ; CHECK: stur x1, [x19] ; Now check that x is stored at fp - 20. We check that this is the same ; location accessed from the funclet to retrieve x. ; CHECK: orr w8, wzr, #0x1 ; CHECK: stur w8, [x29, [[X_OFFSET:#-[1-9][0-9]+]] ; Check the offset off the frame pointer at which B is located. ; Check the same offset is used to pass the address of B to init2 in the ; funclet. ; CHECK: sub x0, x29, [[B_OFFSET:#[1-9][0-9]+]] ; CHECK: bl "?init@@YAXPEAH@Z" ; This is the label for the throw that is encoded in the ip2state. ; We are inside the try block, where we make a call to func2 ; CHECK-LABEL: .Ltmp0: ; CHECK: bl "?func2@@YAHXZ ; CHECK: [[CATCHRETDEST:.LBB0_[0-9]+]]: ; %catchret.dest ; Check the catch funclet. ; CHECK-LABEL: "?catch$2@?0??func@@YAHXZ@4HA": ; Check that the stack space is allocated only for the callee saved registers. ; CHECK: str x28, [sp, #-48]! ; CHECK: str x21, [sp, #8] ; CHECK: stp x19, x20, [sp, #16] ; CHECK: stp x29, x30, [sp, #32] ; CHECK: add x20, x19, #12 ; Check that there are no further stack updates. ; CHECK-NOT: sub sp, sp ; Check that the stack address passed to init2 is off the frame pointer, and ; that it matches the address of B in the parent function. ; CHECK: sub x0, x29, [[B_OFFSET]] ; CHECK: bl "?init2@@YAXPEAH@Z" ; Check that are storing x back to the same location off the frame pointer as in ; the parent function. ; CHECK: stur w8, [x29, [[X_OFFSET]]] ; Check that the funclet branches back to the catchret destination ; CHECK: adrp x0, .LBB0_3 ; CHECK-NEXT: add x0, x0, [[CATCHRETDEST]] ; Now check that the offset of the unwind help object from the stack pointer on ; entry to func is encoded in cppxdata that is passed to __CxxFrameHandler3. As ; computed above, this comes to -672. ; CHECK-LABEL: "$cppxdata$?func@@YAHXZ": ; CHECK-NEXT: .word 429065506 ; MagicNumber ; CHECK-NEXT: .word 2 ; MaxState ; CHECK-NEXT: .word ("$stateUnwindMap$?func@@YAHXZ")@IMGREL ; UnwindMap ; CHECK-NEXT: .word 1 ; NumTryBlocks ; CHECK-NEXT: .word ("$tryMap$?func@@YAHXZ")@IMGREL ; TryBlockMap ; CHECK-NEXT: .word 4 ; IPMapEntries ; CHECK-NEXT: .word ("$ip2state$?func@@YAHXZ")@IMGREL ; IPToStateXData ; CHECK-NEXT: .word -672 ; UnwindHelp ; UNWIND: Function: ?func@@YAHXZ (0x0) ; UNWIND: Prologue [ ; UNWIND-NEXT: ; nop ; UNWIND-NEXT: ; sub sp, #624 ; UNWIND-NEXT: ; add fp, sp, #32 ; UNWIND-NEXT: ; stp x29, x30, [sp, #32] ; UNWIND-NEXT: ; stp x19, x20, [sp, #16] ; UNWIND-NEXT: ; str x21, [sp, #8] ; UNWIND-NEXT: ; str x28, [sp, #48]! ; UNWIND-NEXT: ; end ; UNWIND: Function: ?catch$2@?0??func@@YAHXZ@4HA ; UNWIND: Prologue [ ; UNWIND-NEXT: ; stp x29, x30, [sp, #32] ; UNWIND-NEXT: ; stp x19, x20, [sp, #16] ; UNWIND-NEXT: ; str x21, [sp, #8] ; UNWIND-NEXT: ; str x28, [sp, #48]! ; UNWIND-NEXT: ; end target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128" target triple = "aarch64-unknown-windows-msvc19.11.0" %rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] } %eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 } %eh.CatchableTypeArray.1 = type { i32, [1 x i32] } %eh.ThrowInfo = type { i32, i32, i32, i32 } $"??_R0H@8" = comdat any $"_CT??_R0H@84" = comdat any $_CTA1H = comdat any $_TI1H = comdat any @"??_7type_info@@6B@" = external constant i8* @"??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat @__ImageBase = external dso_local constant i8 @"_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 @_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 @_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 ; Function Attrs: noinline optnone define dso_local i32 @"?func@@YAHXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { entry: %B = alloca [50 x i32], align 4 %x = alloca i32, align 4 %tmp = alloca i32, align 4 %i = alloca i32, align 4 %C = alloca [100 x i32], align 4 store i32 1, i32* %x, align 4 %arraydecay = getelementptr inbounds [50 x i32], [50 x i32]* %B, i32 0, i32 0 call void @"?init@@YAXPEAH@Z"(i32* %arraydecay) %call = invoke i32 @"?func2@@YAHXZ"() to label %invoke.cont unwind label %catch.dispatch invoke.cont: ; preds = %entry store i32 %call, i32* %tmp, align 4 %0 = bitcast i32* %tmp to i8* invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2 to label %unreachable unwind label %catch.dispatch catch.dispatch: ; preds = %invoke.cont, %entry %1 = catchswitch within none [label %catch] unwind to caller catch: ; preds = %catch.dispatch %2 = catchpad within %1 [%rtti.TypeDescriptor2* @"??_R0H@8", i32 0, i32* %i] %arraydecay1 = getelementptr inbounds [100 x i32], [100 x i32]* %C, i32 0, i32 0 call void @"?init@@YAXPEAH@Z"(i32* %arraydecay1) [ "funclet"(token %2) ] %arraydecay2 = getelementptr inbounds [50 x i32], [50 x i32]* %B, i32 0, i32 0 call void @"?init2@@YAXPEAH@Z"(i32* %arraydecay2) [ "funclet"(token %2) ] %3 = load i32, i32* %i, align 4 %idxprom = sext i32 %3 to i64 %arrayidx = getelementptr inbounds [50 x i32], [50 x i32]* %B, i64 0, i64 %idxprom %4 = load i32, i32* %arrayidx, align 4 %5 = load i32, i32* %i, align 4 %idxprom3 = sext i32 %5 to i64 %arrayidx4 = getelementptr inbounds [100 x i32], [100 x i32]* %C, i64 0, i64 %idxprom3 %6 = load i32, i32* %arrayidx4, align 4 %add = add nsw i32 %4, %6 %7 = load i32, i32* %i, align 4 %8 = load i32, i32* %i, align 4 %mul = mul nsw i32 %7, %8 %add5 = add nsw i32 %add, %mul store i32 %add5, i32* %x, align 4 catchret from %2 to label %catchret.dest catchret.dest: ; preds = %catch br label %try.cont try.cont: ; preds = %catchret.dest %arrayidx6 = getelementptr inbounds [50 x i32], [50 x i32]* %B, i64 0, i64 2 %9 = load i32, i32* %arrayidx6, align 4 %10 = load i32, i32* %x, align 4 %add7 = add nsw i32 %9, %10 ret i32 %add7 unreachable: ; preds = %invoke.cont unreachable } declare dso_local void @"?init@@YAXPEAH@Z"(i32*) declare dso_local i32 @"?func2@@YAHXZ"() declare dso_local i32 @__CxxFrameHandler3(...) declare dllimport void @_CxxThrowException(i8*, %eh.ThrowInfo*) declare dso_local void @"?init2@@YAXPEAH@Z"(i32*) attributes #0 = { noinline optnone } attributes #2 = { noreturn }