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