| ; Test that ASAN will not instrument lifetime markers on alloca offsets. |
| ; |
| ; RUN: opt < %s -passes=asan --asan-use-after-scope -S | FileCheck %s |
| |
| target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.15.0" |
| |
| %t = type { ptr, ptr, %sub, i64 } |
| %sub = type { i32 } |
| |
| define void @foo() sanitize_address { |
| entry: |
| %0 = alloca %t, align 8 |
| %x = getelementptr inbounds %t, ptr %0, i64 0, i32 2 |
| call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %x) |
| call void @bar(ptr nonnull %x) |
| call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %x) #3 |
| ret void |
| } |
| |
| declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) |
| declare void @bar(ptr) |
| declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) |
| |
| ; CHECK: store i64 %[[STACK_BASE:.+]], ptr %asan_local_stack_base, align 8 |
| ; CHECK-NOT: store i8 0 |
| ; CHECK: call void @bar(ptr nonnull %x) |
