File: force-dynamic-shadow.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (22 lines) | stat: -rw-r--r-- 825 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
 
; Test -asan-force-dynamic-shadow flag.
;
; RUN: opt -passes=asan -S -asan-force-dynamic-shadow=1 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-FDS
; RUN: opt -passes=asan -S -asan-force-dynamic-shadow=0 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-NDS

target triple = "x86_64-unknown-linux-gnu"

define i32 @test_load(ptr %a) sanitize_address {
; First instrumentation in the function must be to load the dynamic shadow
; address into a local variable.
; CHECK-LABEL: @test_load
; CHECK: entry:
; CHECK-FDS-NEXT: %[[SHADOW:[^ ]*]] = load i64, ptr @__asan_shadow_memory_dynamic_address
; CHECK-NDS-NOT: __asan_shadow_memory_dynamic_address

; Shadow address is loaded and added into the whole offset computation.
; CHECK-FDS: add i64 %{{.*}}, %[[SHADOW]]

entry:
  %tmp1 = load i32, ptr %a, align 4
  ret i32 %tmp1
}