| ; Test that global metadata is placed in a separate section on Mach-O platforms, |
| ; allowing dead stripping to be performed, and that the appropriate runtime |
| ; routines are invoked. |
| |
| ; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-private-alias=0 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,NOALIAS |
| ; RUN: opt < %s -passes='asan-pipeline' -asan-use-private-alias=0 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,NOALIAS |
| ; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-private-alias=1 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,ALIAS |
| ; RUN: opt < %s -passes='asan-pipeline' -asan-use-private-alias=1 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,ALIAS |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.11.0" |
| |
| @global = global [1 x i32] zeroinitializer, align 4 |
| |
| !llvm.asan.globals = !{!0} |
| |
| !0 = !{[1 x i32]* @global, !1, !"global", i1 false, i1 false} |
| !1 = !{!"test-globals.c", i32 1, i32 5} |
| |
| |
| ; Find the metadata for @global: |
| ; NOALIAS: [[METADATA:@.+]] = internal global {{.*}} @global {{.*}} section "__DATA,__asan_globals,regular" |
| ; ALIAS: [[METADATA:@.+]] = internal global {{.*}} @0 {{.*}} section "__DATA,__asan_globals,regular" |
| |
| ; Find the liveness binder for @global and its metadata: |
| ; NOALIAS: @__asan_binder_global = internal global {{.*}} @global {{.*}} [[METADATA]] {{.*}} section "__DATA,__asan_liveness,regular,live_support" |
| ; ALIAS: @__asan_binder_global = internal global {{.*}} @0 {{.*}} [[METADATA]] {{.*}} section "__DATA,__asan_liveness,regular,live_support" |
| |
| ; The binder has to be inserted to llvm.compiler.used to avoid being stripped |
| ; during LTO. |
| ; CHECK: @llvm.compiler.used {{.*}} @__asan_binder_global {{.*}} section "llvm.metadata" |
| |
| ; Test that there is the flag global variable: |
| ; CHECK: @___asan_globals_registered = common hidden global i64 0 |
| |
| ; ALIAS: @0 = private alias {{.*}} @global |
| |
| ; Test that __asan_register_image_globals is invoked from the constructor: |
| ; CHECK-LABEL: define internal void @asan.module_ctor |
| ; CHECK-NOT: ret |
| ; CHECK: call void @__asan_register_image_globals(i64 ptrtoint (i64* @___asan_globals_registered to i64)) |
| ; CHECK: ret |
| |
| ; Test that __asan_unregister_image_globals is invoked from the destructor: |
| ; CHECK-LABEL: define internal void @asan.module_dtor |
| ; CHECK-NOT: ret |
| ; CHECK: call void @__asan_unregister_image_globals(i64 ptrtoint (i64* @___asan_globals_registered to i64)) |
| ; CHECK: ret |
