xref: /aosp_15_r20/external/llvm/test/Transforms/SafeStack/sink-to-use.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; Test that unsafe alloca address calculation is done immediately before each use.
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; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workerdefine void @f() safestack {
6*9880d681SAndroid Build Coastguard Workerentry:
7*9880d681SAndroid Build Coastguard Worker  %x0 = alloca i32, align 4
8*9880d681SAndroid Build Coastguard Worker  %x1 = alloca i32, align 4
9*9880d681SAndroid Build Coastguard Worker
10*9880d681SAndroid Build Coastguard Worker; CHECK: %[[A:.*]] = getelementptr i8, i8* %{{.*}}, i32 -4
11*9880d681SAndroid Build Coastguard Worker; CHECK: %[[X0:.*]] = bitcast i8* %[[A]] to i32*
12*9880d681SAndroid Build Coastguard Worker; CHECK: call void @use(i32* %[[X0]])
13*9880d681SAndroid Build Coastguard Worker  call void @use(i32* %x0)
14*9880d681SAndroid Build Coastguard Worker
15*9880d681SAndroid Build Coastguard Worker; CHECK: %[[B:.*]] = getelementptr i8, i8* %{{.*}}, i32 -8
16*9880d681SAndroid Build Coastguard Worker; CHECK: %[[X1:.*]] = bitcast i8* %[[B]] to i32*
17*9880d681SAndroid Build Coastguard Worker; CHECK: call void @use(i32* %[[X1]])
18*9880d681SAndroid Build Coastguard Worker  call void @use(i32* %x1)
19*9880d681SAndroid Build Coastguard Worker  ret void
20*9880d681SAndroid Build Coastguard Worker}
21*9880d681SAndroid Build Coastguard Worker
22*9880d681SAndroid Build Coastguard Workerdeclare void @use(i32*)
23