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; RUN: llc -mtriple=aarch64-none-eabi < %s | FileCheck %s
; RUN: llc -mtriple=aarch64-none-eabi -mattr=v8.3a < %s | FileCheck --check-prefix CHECK-V83A %s
; CHECK-LABEL: @leaf
; CHECK-NOT: paci{{[a,b]}}sp
; CHECK-NOT: auti{{[a,b]}}sp
define i32 @leaf(i32 %x) {
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_none
; CHECK-NOT: paci{{[a,b]}}sp
; CHECK-NOT: auti{{[a,b]}}sp
define i32 @leaf_sign_none(i32 %x) "sign-return-address"="none" {
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_non_leaf
; CHECK-NOT: paci{{[a,b]}}sp
; CHECK-NOT: auti{{[a,b]}}sp
define i32 @leaf_sign_non_leaf(i32 %x) "sign-return-address"="non-leaf" {
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_all
; CHECK: hint #25
; CHECK: hint #29
; CHECK: ret
; CHECK-V83A: pacia x30, sp
; CHECK-V83A: retaa
define i32 @leaf_sign_all(i32 %x) "sign-return-address"="all" {
ret i32 %x
}
; CHECK: @leaf_clobbers_lr
; CHECK: hint #25
; CHECK-V83A: pacia x30, sp
; CHECK, CHECK-V83A: str x30, [sp, #-16]!
; CHECK, CHECK-V83A: ldr x30, [sp], #16
; CHECK: hint #29
; CHECK: ret
; CHECK-V32A-NEXT: retaa
define i64 @leaf_clobbers_lr(i64 %x) "sign-return-address"="non-leaf" {
call void asm sideeffect "mov x30, $0", "r,~{lr}"(i64 %x) #1
ret i64 %x
}
declare i32 @foo(i32)
; CHECK: @non_leaf_sign_all
; CHECK: hint #25
; CHECK: hint #29
; CHECK: ret
; CHECK-V83A: pacia x30, sp
; CHECK-V83A: retaa
define i32 @non_leaf_sign_all(i32 %x) "sign-return-address"="all" {
%call = call i32 @foo(i32 %x)
ret i32 %call
}
; CHECK: @non_leaf_sign_non_leaf
; CHECK: hint #25
; CHECK-V83A: pacia x30, sp
; CHECK, CHECK-V83A: str x30, [sp, #-16]!
; CHECK, CHECK-V83A: ldr x30, [sp], #16
; CHECK: hint #29
; CHECK: ret
; CHECK-V83A: retaa
define i32 @non_leaf_sign_non_leaf(i32 %x) "sign-return-address"="non-leaf" {
%call = call i32 @foo(i32 %x)
ret i32 %call
}
; CHECK-LABEL: @leaf_sign_all_v83
; CHECK: pacia x30, sp
; CHECK-NOT: ret
; CHECK: retaa
; CHECK-NOT: ret
define i32 @leaf_sign_all_v83(i32 %x) "sign-return-address"="all" "target-features"="+v8.3a" {
ret i32 %x
}
declare fastcc i64 @bar(i64)
; CHECK-LABEL: @spill_lr_and_tail_call
; CHECK: hint #25
; CHECK-V83A: pacia x30, sp
; CHECK, CHECK-V83A: str x30, [sp, #-16]!
; CHECK, CHECK-V83A: ldr x30, [sp], #16
; CHECK-V83A: autiasp
; CHECK: hint #29
; CHECK: b bar
define fastcc void @spill_lr_and_tail_call(i64 %x) "sign-return-address"="all" {
call void asm sideeffect "mov x30, $0", "r,~{lr}"(i64 %x) #1
tail call fastcc i64 @bar(i64 %x)
ret void
}
; CHECK-LABEL: @leaf_sign_all_a_key
; CHECK: hint #25
; CHECK: hint #29
; CHECK-V83A: pacia x30, sp
; CHECK-V83A: retaa
define i32 @leaf_sign_all_a_key(i32 %x) "sign-return-address"="all" "sign-return-address-key"="a_key" {
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_all_b_key
; CHECK: hint #27
; CHECK: hint #31
; CHECK-V83A: pacib x30, sp
; CHECK-V83A: retab
define i32 @leaf_sign_all_b_key(i32 %x) "sign-return-address"="all" "sign-return-address-key"="b_key" {
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_all_v83_b_key
; CHECK: pacib x30, sp
; CHECK-NOT: ret
; CHECK: retab
; CHECK-NOT: ret
define i32 @leaf_sign_all_v83_b_key(i32 %x) "sign-return-address"="all" "target-features"="+v8.3a" "sign-return-address-key"="b_key" {
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_all_a_key_bti
; CHECK-NOT: hint #34
; CHECK: hint #25
; CHECK: hint #29
; CHECK-V83A: pacia x30, sp
; CHECK-V83A: retaa
define i32 @leaf_sign_all_a_key_bti(i32 %x) "sign-return-address"="all" "sign-return-address-key"="a_key" "branch-target-enforcement"="true"{
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_all_b_key_bti
; CHECK-NOT: hint #34
; CHECK: hint #27
; CHECK: hint #31
; CHECK-V83A: pacib x30, sp
; CHECK-V83A: retab
define i32 @leaf_sign_all_b_key_bti(i32 %x) "sign-return-address"="all" "sign-return-address-key"="b_key" "branch-target-enforcement"="true"{
ret i32 %x
}
; CHECK-LABEL: @leaf_sign_all_v83_b_key_bti
; CHECK: pacib x30, sp
; CHECK-NOT: ret
; CHECK: retab
; CHECK-NOT: ret
define i32 @leaf_sign_all_v83_b_key_bti(i32 %x) "sign-return-address"="all" "target-features"="+v8.3a" "sign-return-address-key"="b_key" "branch-target-enforcement"="true" {
ret i32 %x
}
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