1 ; Test that global metadata is placed in a separate section on Mach-O platforms,
2 ; allowing dead stripping to be performed, and that the appropriate runtime
3 ; routines are invoked.
5 ; RUN: opt < %s -passes=asan -asan-use-private-alias=0 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,NOALIAS
6 ; RUN: opt < %s -passes=asan -asan-use-private-alias=1 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,ALIAS
8 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
9 target triple = "x86_64-apple-macosx10.11.0"
11 @global = global [1 x i32] zeroinitializer, align 4
13 !llvm.asan.globals = !{!0}
15 !0 = !{ptr @global, !1, !"global", i1 false, i1 false}
16 !1 = !{!"test-globals.c", i32 1, i32 5}
19 ; Find the metadata for @global:
20 ; NOALIAS: [[METADATA:@.+]] = internal global {{.*}} @global {{.*}} section "__DATA,__asan_globals,regular"
21 ; ALIAS: [[METADATA:@.+]] = internal global {{.*}} @0 {{.*}} section "__DATA,__asan_globals,regular"
23 ; Find the liveness binder for @global and its metadata:
24 ; NOALIAS: @__asan_binder_global = internal global {{.*}} @global {{.*}} [[METADATA]] {{.*}} section "__DATA,__asan_liveness,regular,live_support"
25 ; ALIAS: @__asan_binder_global = internal global {{.*}} @0 {{.*}} [[METADATA]] {{.*}} section "__DATA,__asan_liveness,regular,live_support"
27 ; The binder has to be inserted to llvm.compiler.used to avoid being stripped
29 ; CHECK: @llvm.compiler.used = appending global [2 x ptr] [ptr @global, ptr @__asan_binder_global], section "llvm.metadata"
31 ; Test that there is the flag global variable:
32 ; CHECK: @___asan_globals_registered = common hidden global i64 0
34 ; ALIAS: @0 = private alias {{.*}} @global
36 ; Test that __asan_register_image_globals is invoked from the constructor:
37 ; CHECK-LABEL: define internal void @asan.module_ctor
39 ; CHECK: call void @__asan_register_image_globals(i64 ptrtoint (ptr @___asan_globals_registered to i64))
42 ; Test that __asan_unregister_image_globals is invoked from the destructor:
43 ; CHECK-LABEL: define internal void @asan.module_dtor
45 ; CHECK: call void @__asan_unregister_image_globals(i64 ptrtoint (ptr @___asan_globals_registered to i64))