| ; Test handling of llvm.lifetime intrinsics in UAR/UAS modes. |
| ; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -asan-use-after-scope=0 -S | FileCheck %s |
| ; RUN: opt < %s -asan -asan-module -asan-use-after-return=1 -asan-use-after-scope=0 -S | FileCheck %s |
| ; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -asan-use-after-scope=1 -S | FileCheck %s --check-prefix=CHECK-UAS |
| ; RUN: opt < %s -asan -asan-module -asan-use-after-return=1 -asan-use-after-scope=1 -S | FileCheck %s --check-prefix=CHECK-UAS |
| |
| 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-S128" |
| |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind |
| |
| define i32 @basic_test() sanitize_address { |
| ; CHECK-LABEL: define i32 @basic_test() |
| |
| entry: |
| %retval = alloca i32, align 4 |
| %c = alloca i8, align 1 |
| |
| ; Memory is poisoned in prologue: F1F1F1F104F3F8F2 |
| ; CHECK-UAS: store i64 -866676825215864335, i64* %{{[0-9]+}} |
| |
| call void @llvm.lifetime.start.p0i8(i64 1, i8* %c) |
| ; Memory is unpoisoned at llvm.lifetime.start: 01 |
| ; CHECK-UAS: store i8 1, i8* %{{[0-9]+}} |
| |
| store volatile i32 0, i32* %retval |
| store volatile i8 0, i8* %c, align 1 |
| |
| call void @llvm.lifetime.end.p0i8(i64 1, i8* %c) |
| ; Memory is poisoned at llvm.lifetime.end: F8 |
| ; CHECK-UAS: store i8 -8, i8* %{{[0-9]+}} |
| |
| ; Unpoison memory at function exit in UAS mode. |
| ; CHECK-UAS: store i64 0, i64* %{{[0-9]+}} |
| ; CHECK-UAS: ret i32 0 |
| ret i32 0 |
| } |
| |
| ; No poisoning/poisoning at all in plain mode. |
| ; CHECK-NOT: __asan_poison_stack_memory |
| ; CHECK-NOT: __asan_unpoison_stack_memory |
