File: lifetime-asan.ll

package info (click to toggle)
llvm-toolchain-6.0 1:6.0-1~bpo9+1
  • links: PTS, VCS
  • area: main
  • in suites: stretch-backports
  • size: 594,652 kB
  • sloc: cpp: 3,044,500; ansic: 595,051; asm: 271,890; python: 128,923; objc: 106,554; sh: 21,854; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,214; cs: 2,027; xml: 686; php: 212; csh: 117
file content (49 lines) | stat: -rw-r--r-- 1,227 bytes parent folder | download | duplicates (10)
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
45
46
47
48
49
; RUN: opt < %s -instcombine -S | FileCheck %s

declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
declare void @foo(i8* nocapture)

define void @asan() sanitize_address {
entry:
  ; CHECK-LABEL: @asan(
  %text = alloca i8, align 1

  call void @llvm.lifetime.start.p0i8(i64 1, i8* %text)
  call void @llvm.lifetime.end.p0i8(i64 1, i8* %text)
  ; CHECK: call void @llvm.lifetime.start
  ; CHECK-NEXT: call void @llvm.lifetime.end

  call void @foo(i8* %text) ; Keep alloca alive

  ret void
}

define void @hwasan() sanitize_hwaddress {
entry:
  ; CHECK-LABEL: @hwasan(
  %text = alloca i8, align 1

  call void @llvm.lifetime.start.p0i8(i64 1, i8* %text)
  call void @llvm.lifetime.end.p0i8(i64 1, i8* %text)
  ; CHECK: call void @llvm.lifetime.start
  ; CHECK-NEXT: call void @llvm.lifetime.end

  call void @foo(i8* %text) ; Keep alloca alive

  ret void
}

define void @no_asan() {
entry:
  ; CHECK-LABEL: @no_asan(
  %text = alloca i8, align 1

  call void @llvm.lifetime.start.p0i8(i64 1, i8* %text)
  call void @llvm.lifetime.end.p0i8(i64 1, i8* %text)
  ; CHECK-NO: call void @llvm.lifetime

  call void @foo(i8* %text) ; Keep alloca alive

  ret void
}