llvm/test/Instrumentation/RealtimeSanitizer/rtsan.ll

; RUN: opt < %s -passes='rtsan' -S | FileCheck %s

define void @violation() #0 {
  %1 = alloca ptr, align 8
  %2 = call ptr @malloc(i64 noundef 2) #3
  store ptr %2, ptr %1, align 8
  ret void
}

declare ptr @malloc(i64 noundef) #1

define noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @violation() #4
  ret i32 0
}

attributes #0 = { mustprogress noinline sanitize_realtime optnone ssp uwtable(sync) }

; RealtimeSanitizer pass should insert call to initialize the runtime
; CHECK: @llvm.used = appending global [1 x ptr] [ptr @rtsan.module_ctor]
; CHECK: @llvm.global_ctors = {{.*}}@rtsan.module_ctor

; RealtimeSanitizer pass should insert __rtsan_realtime_enter right after function definition
; CHECK-LABEL: @violation()
; CHECK-NEXT: call{{.*}}@__rtsan_realtime_enter

; RealtimeSanitizer pass should insert __rtsan_realtime_exit right before function return
; CHECK: call{{.*}}@__rtsan_realtime_exit
; CHECK-NEXT: ret{{.*}}void

; CHECK-LABEL: define internal void @rtsan.module_ctor()
; CHECK-NEXT: call void @__rtsan_ensure_initialized()