1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc -mtriple=aarch64-unknown-linux-gnu %s -o - | FileCheck %s
; Purpose: With BTI enabled, the landing pad (%lpad) begins with an EH_LABEL and the
; first *executed* instruction is `bti j`. (BTI is inserted *after* the EH label and meta.)
declare i32 @__gxx_personality_v0(...)
declare void @may_throw()
define void @test() #0 personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: test:
; CHECK: .Lfunc_begin0:
; CHECK-NEXT: .cfi_startproc
; CHECK-NEXT: .cfi_personality 156, DW.ref.__gxx_personality_v0
; CHECK-NEXT: .cfi_lsda 28, .Lexception0
; CHECK-NEXT: // %bb.0: // %entry
; CHECK-NEXT: bti c
; CHECK-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: .cfi_offset w30, -16
; CHECK-NEXT: .Ltmp0:
; CHECK-NEXT: bl may_throw
; CHECK-NEXT: .Ltmp1:
; CHECK-NEXT: // %bb.1: // %common.ret
; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-NEXT: ret
; CHECK-NEXT: .LBB0_2: // %lpad
; CHECK-NEXT: .Ltmp2:
; CHECK-NEXT: bti j
; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-NEXT: ret
entry:
invoke void @may_throw()
to label %ret unwind label %lpad
lpad:
landingpad { ptr, i32 } cleanup
ret void
ret:
ret void
}
attributes #0 = { noinline "branch-target-enforcement"="true" "target-features"="+bti" }
|
