1 ; Test handling of llvm.lifetime intrinsics in UAR/UAS modes. 2 ; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -asan-use-after-scope=0 -S | FileCheck %s 3 ; RUN: opt < %s -asan -asan-module -asan-use-after-return=1 -asan-use-after-scope=0 -S | FileCheck %s 4 ; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -asan-use-after-scope=1 -S | FileCheck %s --check-prefix=CHECK-UAS 5 ; RUN: opt < %s -asan -asan-module -asan-use-after-return=1 -asan-use-after-scope=1 -S | FileCheck %s --check-prefix=CHECK-UAS 6 7 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" 8 9 declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind 10 declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind 11 12 define i32 @basic_test() sanitize_address { 13 ; CHECK-LABEL: define i32 @basic_test() 14 15 entry: 16 %retval = alloca i32, align 4 17 %c = alloca i8, align 1 18 19 call void @llvm.lifetime.start(i64 1, i8* %c) 20 ; Memory is unpoisoned at llvm.lifetime.start 21 ; CHECK-UAS: call void @__asan_unpoison_stack_memory(i64 %{{[^ ]+}}, i64 1) 22 23 store volatile i32 0, i32* %retval 24 store volatile i8 0, i8* %c, align 1 25 26 call void @llvm.lifetime.end(i64 1, i8* %c) 27 ; Memory is poisoned at llvm.lifetime.end 28 ; CHECK-UAS: call void @__asan_poison_stack_memory(i64 %{{[^ ]+}}, i64 1) 29 30 ; Unpoison memory at function exit in UAS mode. 31 ; CHECK-UAS: call void @__asan_unpoison_stack_memory(i64 %{{[^ ]+}}, i64 64) 32 ; CHECK-UAS: ret void 33 34 ret i32 0 35 } 36 37 ; No poisoning/poisoning at all in plain mode. 38 ; CHECK-NOT: __asan_poison_stack_memory 39 ; CHECK-NOT: __asan_unpoison_stack_memory 40
