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. 4 5 ; RUN: opt < %s -asan -asan-module -asan-globals-live-support -S | FileCheck %s 6 7 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 8 target triple = "x86_64-apple-macosx10.11.0" 9 10 @global = global [1 x i32] zeroinitializer, align 4 11 12 !llvm.asan.globals = !{!0} 13 14 !0 = !{[1 x i32]* @global, !1, !"global", i1 false, i1 false} 15 !1 = !{!"test-globals.c", i32 1, i32 5} 16 17 18 ; Test that there is the flag global variable: 19 ; CHECK: @__asan_globals_registered = common global i64 0 20 21 ; Find the metadata for @global: 22 ; CHECK: [[METADATA:@[0-9]+]] = internal global {{.*}} @global {{.*}} section "__DATA,__asan_globals,regular", align 1 23 24 ; Find the liveness binder for @global and its metadata: 25 ; CHECK: @{{[0-9]+}} = internal global {{.*}} @global {{.*}} [[METADATA]] {{.*}} section "__DATA,__asan_liveness,regular,live_support" 26 27 ; Test that __asan_register_image_globals is invoked from the constructor: 28 ; CHECK-LABEL: define internal void @asan.module_ctor 29 ; CHECK-NOT: ret 30 ; CHECK: call void @__asan_register_image_globals(i64 ptrtoint (i64* @__asan_globals_registered to i64)) 31 ; CHECK: ret 32 33 ; Test that __asan_unregister_image_globals is invoked from the destructor: 34 ; CHECK-LABEL: define internal void @asan.module_dtor 35 ; CHECK-NOT: ret 36 ; CHECK: call void @__asan_unregister_image_globals(i64 ptrtoint (i64* @__asan_globals_registered to i64)) 37 ; CHECK: ret 38
