File: memaccess-clobber.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (23 lines) | stat: -rw-r--r-- 809 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
; Make sure memaccess checks preceed the following reads.
;
; RUN: opt < %s -disable-output 2>&1 -passes='hwasan,print<memoryssa>' -hwasan-use-stack-safety=0 -mtriple aarch64-linux-android30 | FileCheck %s

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-android10000"

declare void @use32(ptr)

define i32 @test_alloca() sanitize_hwaddress {
entry:
  %x = alloca i32, align 4
  ; CHECK: call void @use32
  call void @use32(ptr nonnull %x)
  ; CHECK: [[A:[0-9]+]] = MemoryDef({{[0-9]+}})
  ; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules
  ; CHECK: MemoryUse([[A]])
  ; CHECK-NEXT: load i32, ptr %x.hwasan
  %y = load i32, ptr %x
  ; CHECK: {{[0-9]+}} = MemoryDef([[A]])
  ; CHECK-NEXT: call void @llvm.memset.p0.i64
  ret i32 %y
}