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; RUN: llc < %s -mtriple=arm64-eabi -asm-verbose=false -mattr=v8.2a | FileCheck %s
; RUN: llc < %s -mtriple=arm64-eabi -asm-verbose=false -mattr=v8.3a | FileCheck %s --check-prefix=CHECKV83
; Armv8.3-A Pointer Authetication requires a special instruction to strip the
; pointer authentication code from the pointer.
; The XPACLRI instruction assembles to a hint-space instruction before Armv8.3-A
; therefore this instruction can be safely used for any pre Armv8.3-A architectures.
; On Armv8.3-A and onwards XPACI is available so use that instead.
define i8* @ra0() nounwind readnone {
entry:
; CHECK-LABEL: ra0:
; CHECK-NEXT: str x30, [sp, #-16]!
; CHECK-NEXT: hint #7
; CHECK-NEXT: mov x0, x30
; CHECK-NEXT: ldr x30, [sp], #16
; CHECK-NEXT: ret
; CHECKV83: str x30, [sp, #-16]!
; CHECKV83-NEXT: xpaci x30
; CHECKV83-NEXT: mov x0, x30
; CHECKV83-NEXT: ldr x30, [sp], #16
; CHECKV83-NEXT: ret
%0 = tail call i8* @llvm.returnaddress(i32 0)
ret i8* %0
}
define i8* @ra1() nounwind readnone #0 {
entry:
; CHECK-LABEL: ra1:
; CHECK: hint #25
; CHECK-NEXT: str x30, [sp, #-16]!
; CHECK-NEXT: hint #7
; CHECK-NEXT: mov x0, x30
; CHECK-NEXT: ldr x30, [sp], #16
; CHECK-NEXT: hint #29
; CHECK-NEXT: ret
; CHECKV83: pacia x30, sp
; CHECKV83-NEXT: str x30, [sp, #-16]!
; CHECKV83-NEXT: xpaci x30
; CHECKV83-NEXT: mov x0, x30
; CHECKV83-NEXT: ldr x30, [sp], #16
; CHECKV83-NEXT: retaa
%0 = tail call i8* @llvm.returnaddress(i32 0)
ret i8* %0
}
attributes #0 = { "sign-return-address"="all" }
declare i8* @llvm.returnaddress(i32) nounwind readnone
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