1 ; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck %s
2 ; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=2 -S -passes=msan 2>&1 | FileCheck %s -check-prefixes=CHECK,CHECK-ORIGIN
3 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"
4 target triple = "x86_64-unknown-linux-gnu"
6 declare void @__atomic_load(i64, ptr, ptr, i32)
7 declare void @__atomic_store(i64, ptr, ptr, i32)
9 define i24 @odd_sized_load(ptr %ptr) sanitize_memory {
10 ; CHECK: @odd_sized_load(ptr {{.*}}[[PTR:%.+]])
11 ; CHECK: [[VAL_PTR:%.*]] = alloca i24, align 1
12 ; CHECK-ORIGIN: @__msan_set_alloca_origin
13 ; CHECK: call void @__atomic_load(i64 3, ptr [[PTR]], ptr [[VAL_PTR]], i32 2)
15 ; CHECK: ptrtoint ptr [[PTR]]
17 ; CHECK: [[SPTR_I8:%.*]] = inttoptr
20 ; CHECK-ORIGIN: [[OPTR:%.*]] = inttoptr
22 ; CHECK: ptrtoint ptr [[VAL_PTR]]
24 ; CHECK: [[VAL_SPTR_I8:%.*]] = inttoptr
27 ; CHECK-ORIGIN: [[VAL_OPTR:%.*]] = inttoptr
29 ; CHECK: call void @llvm.memcpy{{.*}}(ptr align 1 [[VAL_SPTR_I8]], ptr align 1 [[SPTR_I8]], i64 3
31 ; CHECK-ORIGIN: [[ARG_ORIGIN:%.*]] = load i32, ptr [[OPTR]]
32 ; CHECK-ORIGIN: [[VAL_ORIGIN:%.*]] = call i32 @__msan_chain_origin(i32 [[ARG_ORIGIN]])
33 ; CHECK-ORIGIN: call void @__msan_set_origin(ptr [[VAL_PTR]], i64 3, i32 [[VAL_ORIGIN]])
35 ; CHECK: [[VAL:%.*]] = load i24, ptr [[VAL_PTR]]
36 ; CHECK: ret i24 [[VAL]]
37 %val_ptr = alloca i24, align 1
38 call void @__atomic_load(i64 3, ptr %ptr, ptr %val_ptr, i32 0)
39 %val = load i24, ptr %val_ptr
43 define void @odd_sized_store(ptr %ptr, i24 %val) sanitize_memory {
44 ; CHECK: @odd_sized_store(ptr {{.*}}[[PTR:%.+]], i24 {{.*}}[[VAL:%.+]])
45 ; CHECK: [[VAL_PTR:%.*]] = alloca i24, align 1
46 ; CHECK: store i24 [[VAL]], ptr [[VAL_PTR]]
48 ; CHECK: ptrtoint ptr [[PTR]]
50 ; CHECK: [[SPTR_I8:%.*]] = inttoptr
51 ; CHECK: call void @llvm.memset{{.*}}(ptr align 1 [[SPTR_I8]], i8 0, i64 3
53 ; CHECK: call void @__atomic_store(i64 3, ptr [[VAL_PTR]], ptr [[PTR]], i32 3)
55 %val_ptr = alloca i24, align 1
56 store i24 %val, ptr %val_ptr
57 call void @__atomic_store(i64 3, ptr %val_ptr, ptr %ptr, i32 0)