diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/Instrumentation/AddressSanitizer/instrument_initializer_metadata.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/test/Instrumentation/AddressSanitizer/instrument_initializer_metadata.ll b/test/Instrumentation/AddressSanitizer/instrument_initializer_metadata.ll new file mode 100644 index 0000000..4725516 --- /dev/null +++ b/test/Instrumentation/AddressSanitizer/instrument_initializer_metadata.ll @@ -0,0 +1,36 @@ +; RUN: opt < %s -asan -asan-initialization-order -S | FileCheck %s +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" +target triple = "x86_64-unknown-linux-gnu" +@xxx = global i32 0, align 4 +; Clang will emit the following metadata identifying @xxx as dynamically +; initialized. +!0 = metadata !{i32* @xxx} +!llvm.asan.dynamically_initialized_globals = !{!0} + +define i32 @initializer() uwtable { +entry: + ret i32 42 +} + +define internal void @__cxx_global_var_init() section ".text.startup" { +entry: + %call = call i32 @initializer() + store i32 %call, i32* @xxx, align 4 + ret void +} + +define internal void @_GLOBAL__I_a() address_safety section ".text.startup" { +entry: + call void @__cxx_global_var_init() + ret void +} + +; Clang indicated that @xxx was dynamically initailized. +; __asan_{before,after}_dynamic_init should be called from _GLOBAL__I_a + +; CHECK: define internal void @_GLOBAL__I_a +; CHECK-NOT: ret +; CHECK: call void @__asan_before_dynamic_init +; CHECK: call void @__cxx_global_var_init +; CHECK: call void @__asan_after_dynamic_init +; CHECK: ret |