xref: /aosp_15_r20/external/llvm/test/Transforms/SafeStack/escape-gep-negative.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Worker; Addr-of a local, optimized into a GEP (e.g., &a - 12)
7*9880d681SAndroid Build Coastguard Worker;  safestack attribute
8*9880d681SAndroid Build Coastguard Worker; Requires protector.
9*9880d681SAndroid Build Coastguard Workerdefine void @foo() nounwind uwtable safestack {
10*9880d681SAndroid Build Coastguard Workerentry:
11*9880d681SAndroid Build Coastguard Worker  ; CHECK: __safestack_unsafe_stack_ptr
12*9880d681SAndroid Build Coastguard Worker  %a = alloca i32, align 4
13*9880d681SAndroid Build Coastguard Worker  %add.ptr5 = getelementptr inbounds i32, i32* %a, i64 -12
14*9880d681SAndroid Build Coastguard Worker  %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32* %add.ptr5) nounwind
15*9880d681SAndroid Build Coastguard Worker  ret void
16*9880d681SAndroid Build Coastguard Worker}
17*9880d681SAndroid Build Coastguard Worker
18*9880d681SAndroid Build Coastguard Workerdeclare i32 @printf(i8*, ...)
19