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; RUN: llc -verify-machineinstrs -enable-machine-outliner -mtriple \
; RUN: aarch64-arm-linux-gnu %s -o - | FileCheck %s
; Check that outlined functions use the dedicated RETAA/RETAB instructions
; to sign their return address if available.
define void @a() #0 {
; CHECK-LABEL: a: // @a
; CHECK: // %bb.0:
; CHECK-NEXT: pacib x30, sp
; CHECK: bl [[OUTLINED_FUNC:OUTLINED_FUNCTION_[0-9]+]]
%1 = alloca i32, align 4
%2 = alloca i32, align 4
%3 = alloca i32, align 4
%4 = alloca i32, align 4
%5 = alloca i32, align 4
%6 = alloca i32, align 4
store i32 1, i32* %1, align 4
store i32 2, i32* %2, align 4
store i32 3, i32* %3, align 4
store i32 4, i32* %4, align 4
store i32 5, i32* %5, align 4
store i32 6, i32* %6, align 4
; CHECK: retab
; CHECK-NOT: auti
ret void
}
define void @b() #0 {
; CHECK-LABEL: b: // @b
; CHECK: // %bb.0:
; CHECK-NEXT: pacib x30, sp
; CHECK: bl OUTLINED_FUNC
%1 = alloca i32, align 4
%2 = alloca i32, align 4
%3 = alloca i32, align 4
%4 = alloca i32, align 4
%5 = alloca i32, align 4
%6 = alloca i32, align 4
store i32 1, i32* %1, align 4
store i32 2, i32* %2, align 4
store i32 3, i32* %3, align 4
store i32 4, i32* %4, align 4
store i32 5, i32* %5, align 4
store i32 6, i32* %6, align 4
; CHECK: retab
; CHECK-NOT: auti
ret void
}
define void @c() #0 {
; CHECK-LABEL: c: // @c
; CHECK: // %bb.0:
; CHECK-NEXT: pacib x30, sp
; CHECK: bl OUTLINED_FUNC
%1 = alloca i32, align 4
%2 = alloca i32, align 4
%3 = alloca i32, align 4
%4 = alloca i32, align 4
%5 = alloca i32, align 4
%6 = alloca i32, align 4
store i32 1, i32* %1, align 4
store i32 2, i32* %2, align 4
store i32 3, i32* %3, align 4
store i32 4, i32* %4, align 4
store i32 5, i32* %5, align 4
store i32 6, i32* %6, align 4
; CHECK: retab
; CHECK-NOT: auti
ret void
}
attributes #0 = { "sign-return-address"="all"
"sign-return-address-key"="b_key"
"target-features"="+v8.3a"
nounwind }
; CHECK: OUTLINED_FUNC
; CHECK: // %bb.0:
; CHECK-NEXT: pacib x30, sp
; CHECK: retab
; CHECK-NOT: auti[a,b]sp
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