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
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"
6 declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind
7 declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind
9 define i32 @basic_test() sanitize_address {
10 ; CHECK-LABEL: define i32 @basic_test()
13 %retval = alloca i32, align 4
14 %c = alloca i8, align 1
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)
20 store i32 0, i32* %retval
21 store i8 0, i8* %c, align 1
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)
27 ; No need to unpoison memory at function exit in UAR mode.
28 ; CHECK-NOT: @__asan_unpoison_stack_memory